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Fish | Fish.sol | 0x80c1a36dcbdca742f59f09fda16c43e6ad877c2b | Solidity | Fish | contract Fish is owned, StandardToken {
string public constant TermsOfUse = "https://github.com/triangles-things/fish.project/blob/master/terms-of-use.md";
/*
* State variables
*/
string public constant symbol = "FSH";
string public constant name = "Fish";
uint8 public constant decimals = 3;
/*
* Constructor function
*/
function Fish() {
owner = msg.sender;
balances[msg.sender] = 1; // Owner can now be a referral
totalSupply = 1;
buyPrice_wie= 100000000000000; // 100 szabo per one token. One unit = 1000 tokens. 1 ether = 10 units
sellPrice_wie = buyPrice_wie * sell_ppc / 100;
}
function () payable { revert(); }
/*
* SECTION: PRICE GROWTH
*
* This section is responsible for daily price increase. Once per day the buy price will be increased
* through adjustPrice modifier. The price update happens before buy and sell functions are executed.
* Contract owner has only one way to control the growth rate here - setGrowth.
*/
// Growth rate is present in parts per million (ppm)
uint32 public dailyGrowth_ppm = 6100; // default growth is 20% (0.61% per day)
uint public dailyGrowthUpdated_date = now; // Don't update it on first day of contract
uint32 private constant dailyGrowthMin_ppm = 6096; // 20% every month in price growth or 0.00610 daily
uint32 private constant dailyGrowthMax_ppm = 23374; // 100% in growth every month or 0,02337 daily
uint32 public constant sell_ppc = 90; // Sell price is 90% of buy price
event DailyGrowthUpdate(uint _newRate_ppm);
event PriceAdjusted(uint _newBuyPrice_wei, uint _newSellPrice_wei);
/*
* MODIFIER
* If last update happened more than one day ago, update the price, save the time of current price update
* Adjust sell price and log the event
*/
modifier adjustPrice() {
if ( (dailyGrowthUpdated_date + 1 days) < now ) {
dailyGrowthUpdated_date = now;
buyPrice_wie = buyPrice_wie * (1000000 + dailyGrowth_ppm) / 1000000;
sellPrice_wie = buyPrice_wie * sell_ppc / 100;
PriceAdjusted(buyPrice_wie, sellPrice_wie);
}
_;
}
/*
* OWNER ONLY; EXTERNAL METHOD
* setGrowth can accept values within range from 20% to 100% of growth per month (based on 30 days per month assumption).
*
* Formula is:
*
* buyPrice_eth = buyPrice_eth * (1000000 + dailyGrowthMin_ppm) / 1000000;
* ^new value ^current value ^1.0061 (if dailyGrowth_ppm == 6100)
*
* 1.0061^30 = 1.20 (if dailyGrowth_ppm == 6100)
* 1.023374^30 = 2 (if dailyGrowth_ppm == 23374)
*
* Some other daily rates
*
* Per month -> Value in ppm
* 1.3 -> 8783
* 1.4 -> 11278
* 1.5 -> 13607
* 1.6 -> 15790
* 1.7 -> 17844
* 1.8 -> 19786
*/
function setGrowth(uint32 _newGrowth_ppm) onlyOwner external returns(bool result) {
if (_newGrowth_ppm >= dailyGrowthMin_ppm &&
_newGrowth_ppm <= dailyGrowthMax_ppm
) {
dailyGrowth_ppm = _newGrowth_ppm;
DailyGrowthUpdate(_newGrowth_ppm);
return true;
} else {
return false;
}
}
/*
* SECTION: TRADING
*
* This section is responsible purely for trading the tokens. User can buy tokens, user can sell tokens.
*
*/
uint256 public sellPrice_wie;
uint256 public buyPrice_wie;
/*
* EXTERNAL METHOD
* User can buy arbitrary amount of tokens. Before amount of tokens will be calculated, the price of tokens
* has to be adjusted. This happens in adjustPrice modified before function call.
*
* Short description of this method
*
* Calculate tokens that user is buying
* Assign awards ro refereals
* Add some bounty for new users who set referral before first buy
* Send tokens that belong to contract or if there is non issue more and send them to user
*
* Read -> https://github.com/triangles-things/fish.project/blob/master/terms-of-use.md
*/
function buy() adjustPrice payable external {
require(msg.value >= buyPrice_wie);
var amount = safeDiv(msg.value, buyPrice_wie);
assignBountryToReferals(msg.sender, amount); // First assign bounty
// Buy discount if User is a new user and has set referral
if ( balances[msg.sender] == 0 && referrals[msg.sender][0] != 0 ) {
// Check that user has to wait at least two weeks before he get break even on what he will get
amount = amount * (100 + landingDiscount_ppc) / 100;
}
issueTo(msg.sender, amount);
}
/*
* EXTERNAL METHOD
* User can sell tokens back to contract.
*
* Short description of this method
*
* Adjust price
* Calculate tokens price that user is selling
* Make all possible checks
* Transfer the money
*/
function sell(uint256 _amount) adjustPrice external {
require(_amount > 0 && balances[msg.sender] >= _amount);
uint moneyWorth = safeMul(_amount, sellPrice_wie);
require(this.balance > moneyWorth); // We can't sell if we don't have enough money
if (
balances[this] + _amount > balances[this] &&
balances[msg.sender] - _amount < balances[msg.sender]
) {
balances[this] = safeAdd(balances[this], _amount); // adds the amount to owner's balance
balances[msg.sender] = safeSub(balances[msg.sender], _amount); // subtracts the amount from seller's balance
if (!msg.sender.send(moneyWorth)) { // sends ether to the seller. It's important
revert(); // to do this last to avoid recursion attacks
} else {
Transfer(msg.sender, this, _amount); // executes an event reflecting on the change
}
} else {
revert(); // checks if the sender has enough to sell
}
}
/*
* PRIVATE METHOD
* Issue new tokens to contract
*/
function issueTo(address _beneficiary, uint256 _amount_tkns) private {
if (
balances[this] >= _amount_tkns
) {
// All tokens are taken from balance
balances[this] = safeSub(balances[this], _amount_tkns);
balances[_beneficiary] = safeAdd(balances[_beneficiary], _amount_tkns);
} else {
// Balance will be lowered and new tokens will be issued
uint diff = safeSub(_amount_tkns, balances[this]);
totalSupply = safeAdd(totalSupply, diff);
balances[this] = 0;
balances[_beneficiary] = safeAdd(balances[_beneficiary], _amount_tkns);
}
Transfer(this, _beneficiary, _amount_tkns);
}
/*
* SECTION: BOUNTIES
*
* This section describes all possible awards.
*/
mapping(address => address[3]) referrals;
mapping(address => uint256) bounties;
uint32 public constant landingDiscount_ppc = 4; // Landing discount is 4%
/*
* EXTERNAL METHOD
* Set your referral first. You will get 4% more tokens on your first buy and trigger a
* reward of whoever told you about this contract. A win-win scenario.
*/
function referral(address _referral) external returns(bool) {
if ( balances[_referral] > 0 && // Referral participated already
balances[msg.sender] == 0 && // Sender is a new user
referrals[msg.sender][0] == 0 // Not returning user. User can not reassign their referrals but they can assign them later on
) {
var referral_referrals = referrals[_referral];
referrals[msg.sender] = [_referral, referral_referrals[0], referral_referrals[1]];
return true;
}
return false;
}
/*
* PRIVATE METHOD
* Award bounties to referrals.
*/
function assignBountryToReferals(address _referralsOf, uint256 _amount) private {
var refs = referrals[_referralsOf];
if (refs[0] != 0) {
issueTo(refs[0], (_amount * 4) / 100); // 4% bounty to direct referral
if (refs[1] != 0) {
issueTo(refs[1], (_amount * 2) / 100); // 2% bounty to referral of referral
if (refs[2] != 0) {
issueTo(refs[2], (_amount * 1) / 100); // 1% bounty to referral of referral of referral
}
}
}
}
/*
* OWNER ONLY; EXTERNAL METHOD
* Santa is coming! Who ever made impact to promote the Fish and can prove it will get the bonus
*/
function assignBounty(address _account, uint256 _amount) onlyOwner external returns(bool) {
require(_amount > 0);
if (balances[_account] > 0 && // Account had participated already
bounties[_account] + _amount <= 1000000 // no more than 100 token units per account
) {
issueTo(_account, _amount);
return true;
} else {
return false;
}
}
} | Fish | function Fish() {
owner = msg.sender;
balances[msg.sender] = 1; // Owner can now be a referral
totalSupply = 1;
buyPrice_wie= 100000000000000; // 100 szabo per one token. One unit = 1000 tokens. 1 ether = 10 units
sellPrice_wie = buyPrice_wie * sell_ppc / 100;
}
| /*
* Constructor function
*/ | Comment | v0.4.15+commit.bbb8e64f | bzzr://4613992a993e1bbc51872aa0c9329a881775179ceea4634a49734b7b20cbfb32 | {
"func_code_index": [
367,
755
]
} | 8,600 |
|||
Fish | Fish.sol | 0x80c1a36dcbdca742f59f09fda16c43e6ad877c2b | Solidity | Fish | contract Fish is owned, StandardToken {
string public constant TermsOfUse = "https://github.com/triangles-things/fish.project/blob/master/terms-of-use.md";
/*
* State variables
*/
string public constant symbol = "FSH";
string public constant name = "Fish";
uint8 public constant decimals = 3;
/*
* Constructor function
*/
function Fish() {
owner = msg.sender;
balances[msg.sender] = 1; // Owner can now be a referral
totalSupply = 1;
buyPrice_wie= 100000000000000; // 100 szabo per one token. One unit = 1000 tokens. 1 ether = 10 units
sellPrice_wie = buyPrice_wie * sell_ppc / 100;
}
function () payable { revert(); }
/*
* SECTION: PRICE GROWTH
*
* This section is responsible for daily price increase. Once per day the buy price will be increased
* through adjustPrice modifier. The price update happens before buy and sell functions are executed.
* Contract owner has only one way to control the growth rate here - setGrowth.
*/
// Growth rate is present in parts per million (ppm)
uint32 public dailyGrowth_ppm = 6100; // default growth is 20% (0.61% per day)
uint public dailyGrowthUpdated_date = now; // Don't update it on first day of contract
uint32 private constant dailyGrowthMin_ppm = 6096; // 20% every month in price growth or 0.00610 daily
uint32 private constant dailyGrowthMax_ppm = 23374; // 100% in growth every month or 0,02337 daily
uint32 public constant sell_ppc = 90; // Sell price is 90% of buy price
event DailyGrowthUpdate(uint _newRate_ppm);
event PriceAdjusted(uint _newBuyPrice_wei, uint _newSellPrice_wei);
/*
* MODIFIER
* If last update happened more than one day ago, update the price, save the time of current price update
* Adjust sell price and log the event
*/
modifier adjustPrice() {
if ( (dailyGrowthUpdated_date + 1 days) < now ) {
dailyGrowthUpdated_date = now;
buyPrice_wie = buyPrice_wie * (1000000 + dailyGrowth_ppm) / 1000000;
sellPrice_wie = buyPrice_wie * sell_ppc / 100;
PriceAdjusted(buyPrice_wie, sellPrice_wie);
}
_;
}
/*
* OWNER ONLY; EXTERNAL METHOD
* setGrowth can accept values within range from 20% to 100% of growth per month (based on 30 days per month assumption).
*
* Formula is:
*
* buyPrice_eth = buyPrice_eth * (1000000 + dailyGrowthMin_ppm) / 1000000;
* ^new value ^current value ^1.0061 (if dailyGrowth_ppm == 6100)
*
* 1.0061^30 = 1.20 (if dailyGrowth_ppm == 6100)
* 1.023374^30 = 2 (if dailyGrowth_ppm == 23374)
*
* Some other daily rates
*
* Per month -> Value in ppm
* 1.3 -> 8783
* 1.4 -> 11278
* 1.5 -> 13607
* 1.6 -> 15790
* 1.7 -> 17844
* 1.8 -> 19786
*/
function setGrowth(uint32 _newGrowth_ppm) onlyOwner external returns(bool result) {
if (_newGrowth_ppm >= dailyGrowthMin_ppm &&
_newGrowth_ppm <= dailyGrowthMax_ppm
) {
dailyGrowth_ppm = _newGrowth_ppm;
DailyGrowthUpdate(_newGrowth_ppm);
return true;
} else {
return false;
}
}
/*
* SECTION: TRADING
*
* This section is responsible purely for trading the tokens. User can buy tokens, user can sell tokens.
*
*/
uint256 public sellPrice_wie;
uint256 public buyPrice_wie;
/*
* EXTERNAL METHOD
* User can buy arbitrary amount of tokens. Before amount of tokens will be calculated, the price of tokens
* has to be adjusted. This happens in adjustPrice modified before function call.
*
* Short description of this method
*
* Calculate tokens that user is buying
* Assign awards ro refereals
* Add some bounty for new users who set referral before first buy
* Send tokens that belong to contract or if there is non issue more and send them to user
*
* Read -> https://github.com/triangles-things/fish.project/blob/master/terms-of-use.md
*/
function buy() adjustPrice payable external {
require(msg.value >= buyPrice_wie);
var amount = safeDiv(msg.value, buyPrice_wie);
assignBountryToReferals(msg.sender, amount); // First assign bounty
// Buy discount if User is a new user and has set referral
if ( balances[msg.sender] == 0 && referrals[msg.sender][0] != 0 ) {
// Check that user has to wait at least two weeks before he get break even on what he will get
amount = amount * (100 + landingDiscount_ppc) / 100;
}
issueTo(msg.sender, amount);
}
/*
* EXTERNAL METHOD
* User can sell tokens back to contract.
*
* Short description of this method
*
* Adjust price
* Calculate tokens price that user is selling
* Make all possible checks
* Transfer the money
*/
function sell(uint256 _amount) adjustPrice external {
require(_amount > 0 && balances[msg.sender] >= _amount);
uint moneyWorth = safeMul(_amount, sellPrice_wie);
require(this.balance > moneyWorth); // We can't sell if we don't have enough money
if (
balances[this] + _amount > balances[this] &&
balances[msg.sender] - _amount < balances[msg.sender]
) {
balances[this] = safeAdd(balances[this], _amount); // adds the amount to owner's balance
balances[msg.sender] = safeSub(balances[msg.sender], _amount); // subtracts the amount from seller's balance
if (!msg.sender.send(moneyWorth)) { // sends ether to the seller. It's important
revert(); // to do this last to avoid recursion attacks
} else {
Transfer(msg.sender, this, _amount); // executes an event reflecting on the change
}
} else {
revert(); // checks if the sender has enough to sell
}
}
/*
* PRIVATE METHOD
* Issue new tokens to contract
*/
function issueTo(address _beneficiary, uint256 _amount_tkns) private {
if (
balances[this] >= _amount_tkns
) {
// All tokens are taken from balance
balances[this] = safeSub(balances[this], _amount_tkns);
balances[_beneficiary] = safeAdd(balances[_beneficiary], _amount_tkns);
} else {
// Balance will be lowered and new tokens will be issued
uint diff = safeSub(_amount_tkns, balances[this]);
totalSupply = safeAdd(totalSupply, diff);
balances[this] = 0;
balances[_beneficiary] = safeAdd(balances[_beneficiary], _amount_tkns);
}
Transfer(this, _beneficiary, _amount_tkns);
}
/*
* SECTION: BOUNTIES
*
* This section describes all possible awards.
*/
mapping(address => address[3]) referrals;
mapping(address => uint256) bounties;
uint32 public constant landingDiscount_ppc = 4; // Landing discount is 4%
/*
* EXTERNAL METHOD
* Set your referral first. You will get 4% more tokens on your first buy and trigger a
* reward of whoever told you about this contract. A win-win scenario.
*/
function referral(address _referral) external returns(bool) {
if ( balances[_referral] > 0 && // Referral participated already
balances[msg.sender] == 0 && // Sender is a new user
referrals[msg.sender][0] == 0 // Not returning user. User can not reassign their referrals but they can assign them later on
) {
var referral_referrals = referrals[_referral];
referrals[msg.sender] = [_referral, referral_referrals[0], referral_referrals[1]];
return true;
}
return false;
}
/*
* PRIVATE METHOD
* Award bounties to referrals.
*/
function assignBountryToReferals(address _referralsOf, uint256 _amount) private {
var refs = referrals[_referralsOf];
if (refs[0] != 0) {
issueTo(refs[0], (_amount * 4) / 100); // 4% bounty to direct referral
if (refs[1] != 0) {
issueTo(refs[1], (_amount * 2) / 100); // 2% bounty to referral of referral
if (refs[2] != 0) {
issueTo(refs[2], (_amount * 1) / 100); // 1% bounty to referral of referral of referral
}
}
}
}
/*
* OWNER ONLY; EXTERNAL METHOD
* Santa is coming! Who ever made impact to promote the Fish and can prove it will get the bonus
*/
function assignBounty(address _account, uint256 _amount) onlyOwner external returns(bool) {
require(_amount > 0);
if (balances[_account] > 0 && // Account had participated already
bounties[_account] + _amount <= 1000000 // no more than 100 token units per account
) {
issueTo(_account, _amount);
return true;
} else {
return false;
}
}
} | setGrowth | function setGrowth(uint32 _newGrowth_ppm) onlyOwner external returns(bool result) {
if (_newGrowth_ppm >= dailyGrowthMin_ppm &&
_newGrowth_ppm <= dailyGrowthMax_ppm
) {
dailyGrowth_ppm = _newGrowth_ppm;
DailyGrowthUpdate(_newGrowth_ppm);
return true;
} else {
return false;
}
}
| /*
* OWNER ONLY; EXTERNAL METHOD
* setGrowth can accept values within range from 20% to 100% of growth per month (based on 30 days per month assumption).
*
* Formula is:
*
* buyPrice_eth = buyPrice_eth * (1000000 + dailyGrowthMin_ppm) / 1000000;
* ^new value ^current value ^1.0061 (if dailyGrowth_ppm == 6100)
*
* 1.0061^30 = 1.20 (if dailyGrowth_ppm == 6100)
* 1.023374^30 = 2 (if dailyGrowth_ppm == 23374)
*
* Some other daily rates
*
* Per month -> Value in ppm
* 1.3 -> 8783
* 1.4 -> 11278
* 1.5 -> 13607
* 1.6 -> 15790
* 1.7 -> 17844
* 1.8 -> 19786
*/ | Comment | v0.4.15+commit.bbb8e64f | bzzr://4613992a993e1bbc51872aa0c9329a881775179ceea4634a49734b7b20cbfb32 | {
"func_code_index": [
3183,
3523
]
} | 8,601 |
|||
Fish | Fish.sol | 0x80c1a36dcbdca742f59f09fda16c43e6ad877c2b | Solidity | Fish | contract Fish is owned, StandardToken {
string public constant TermsOfUse = "https://github.com/triangles-things/fish.project/blob/master/terms-of-use.md";
/*
* State variables
*/
string public constant symbol = "FSH";
string public constant name = "Fish";
uint8 public constant decimals = 3;
/*
* Constructor function
*/
function Fish() {
owner = msg.sender;
balances[msg.sender] = 1; // Owner can now be a referral
totalSupply = 1;
buyPrice_wie= 100000000000000; // 100 szabo per one token. One unit = 1000 tokens. 1 ether = 10 units
sellPrice_wie = buyPrice_wie * sell_ppc / 100;
}
function () payable { revert(); }
/*
* SECTION: PRICE GROWTH
*
* This section is responsible for daily price increase. Once per day the buy price will be increased
* through adjustPrice modifier. The price update happens before buy and sell functions are executed.
* Contract owner has only one way to control the growth rate here - setGrowth.
*/
// Growth rate is present in parts per million (ppm)
uint32 public dailyGrowth_ppm = 6100; // default growth is 20% (0.61% per day)
uint public dailyGrowthUpdated_date = now; // Don't update it on first day of contract
uint32 private constant dailyGrowthMin_ppm = 6096; // 20% every month in price growth or 0.00610 daily
uint32 private constant dailyGrowthMax_ppm = 23374; // 100% in growth every month or 0,02337 daily
uint32 public constant sell_ppc = 90; // Sell price is 90% of buy price
event DailyGrowthUpdate(uint _newRate_ppm);
event PriceAdjusted(uint _newBuyPrice_wei, uint _newSellPrice_wei);
/*
* MODIFIER
* If last update happened more than one day ago, update the price, save the time of current price update
* Adjust sell price and log the event
*/
modifier adjustPrice() {
if ( (dailyGrowthUpdated_date + 1 days) < now ) {
dailyGrowthUpdated_date = now;
buyPrice_wie = buyPrice_wie * (1000000 + dailyGrowth_ppm) / 1000000;
sellPrice_wie = buyPrice_wie * sell_ppc / 100;
PriceAdjusted(buyPrice_wie, sellPrice_wie);
}
_;
}
/*
* OWNER ONLY; EXTERNAL METHOD
* setGrowth can accept values within range from 20% to 100% of growth per month (based on 30 days per month assumption).
*
* Formula is:
*
* buyPrice_eth = buyPrice_eth * (1000000 + dailyGrowthMin_ppm) / 1000000;
* ^new value ^current value ^1.0061 (if dailyGrowth_ppm == 6100)
*
* 1.0061^30 = 1.20 (if dailyGrowth_ppm == 6100)
* 1.023374^30 = 2 (if dailyGrowth_ppm == 23374)
*
* Some other daily rates
*
* Per month -> Value in ppm
* 1.3 -> 8783
* 1.4 -> 11278
* 1.5 -> 13607
* 1.6 -> 15790
* 1.7 -> 17844
* 1.8 -> 19786
*/
function setGrowth(uint32 _newGrowth_ppm) onlyOwner external returns(bool result) {
if (_newGrowth_ppm >= dailyGrowthMin_ppm &&
_newGrowth_ppm <= dailyGrowthMax_ppm
) {
dailyGrowth_ppm = _newGrowth_ppm;
DailyGrowthUpdate(_newGrowth_ppm);
return true;
} else {
return false;
}
}
/*
* SECTION: TRADING
*
* This section is responsible purely for trading the tokens. User can buy tokens, user can sell tokens.
*
*/
uint256 public sellPrice_wie;
uint256 public buyPrice_wie;
/*
* EXTERNAL METHOD
* User can buy arbitrary amount of tokens. Before amount of tokens will be calculated, the price of tokens
* has to be adjusted. This happens in adjustPrice modified before function call.
*
* Short description of this method
*
* Calculate tokens that user is buying
* Assign awards ro refereals
* Add some bounty for new users who set referral before first buy
* Send tokens that belong to contract or if there is non issue more and send them to user
*
* Read -> https://github.com/triangles-things/fish.project/blob/master/terms-of-use.md
*/
function buy() adjustPrice payable external {
require(msg.value >= buyPrice_wie);
var amount = safeDiv(msg.value, buyPrice_wie);
assignBountryToReferals(msg.sender, amount); // First assign bounty
// Buy discount if User is a new user and has set referral
if ( balances[msg.sender] == 0 && referrals[msg.sender][0] != 0 ) {
// Check that user has to wait at least two weeks before he get break even on what he will get
amount = amount * (100 + landingDiscount_ppc) / 100;
}
issueTo(msg.sender, amount);
}
/*
* EXTERNAL METHOD
* User can sell tokens back to contract.
*
* Short description of this method
*
* Adjust price
* Calculate tokens price that user is selling
* Make all possible checks
* Transfer the money
*/
function sell(uint256 _amount) adjustPrice external {
require(_amount > 0 && balances[msg.sender] >= _amount);
uint moneyWorth = safeMul(_amount, sellPrice_wie);
require(this.balance > moneyWorth); // We can't sell if we don't have enough money
if (
balances[this] + _amount > balances[this] &&
balances[msg.sender] - _amount < balances[msg.sender]
) {
balances[this] = safeAdd(balances[this], _amount); // adds the amount to owner's balance
balances[msg.sender] = safeSub(balances[msg.sender], _amount); // subtracts the amount from seller's balance
if (!msg.sender.send(moneyWorth)) { // sends ether to the seller. It's important
revert(); // to do this last to avoid recursion attacks
} else {
Transfer(msg.sender, this, _amount); // executes an event reflecting on the change
}
} else {
revert(); // checks if the sender has enough to sell
}
}
/*
* PRIVATE METHOD
* Issue new tokens to contract
*/
function issueTo(address _beneficiary, uint256 _amount_tkns) private {
if (
balances[this] >= _amount_tkns
) {
// All tokens are taken from balance
balances[this] = safeSub(balances[this], _amount_tkns);
balances[_beneficiary] = safeAdd(balances[_beneficiary], _amount_tkns);
} else {
// Balance will be lowered and new tokens will be issued
uint diff = safeSub(_amount_tkns, balances[this]);
totalSupply = safeAdd(totalSupply, diff);
balances[this] = 0;
balances[_beneficiary] = safeAdd(balances[_beneficiary], _amount_tkns);
}
Transfer(this, _beneficiary, _amount_tkns);
}
/*
* SECTION: BOUNTIES
*
* This section describes all possible awards.
*/
mapping(address => address[3]) referrals;
mapping(address => uint256) bounties;
uint32 public constant landingDiscount_ppc = 4; // Landing discount is 4%
/*
* EXTERNAL METHOD
* Set your referral first. You will get 4% more tokens on your first buy and trigger a
* reward of whoever told you about this contract. A win-win scenario.
*/
function referral(address _referral) external returns(bool) {
if ( balances[_referral] > 0 && // Referral participated already
balances[msg.sender] == 0 && // Sender is a new user
referrals[msg.sender][0] == 0 // Not returning user. User can not reassign their referrals but they can assign them later on
) {
var referral_referrals = referrals[_referral];
referrals[msg.sender] = [_referral, referral_referrals[0], referral_referrals[1]];
return true;
}
return false;
}
/*
* PRIVATE METHOD
* Award bounties to referrals.
*/
function assignBountryToReferals(address _referralsOf, uint256 _amount) private {
var refs = referrals[_referralsOf];
if (refs[0] != 0) {
issueTo(refs[0], (_amount * 4) / 100); // 4% bounty to direct referral
if (refs[1] != 0) {
issueTo(refs[1], (_amount * 2) / 100); // 2% bounty to referral of referral
if (refs[2] != 0) {
issueTo(refs[2], (_amount * 1) / 100); // 1% bounty to referral of referral of referral
}
}
}
}
/*
* OWNER ONLY; EXTERNAL METHOD
* Santa is coming! Who ever made impact to promote the Fish and can prove it will get the bonus
*/
function assignBounty(address _account, uint256 _amount) onlyOwner external returns(bool) {
require(_amount > 0);
if (balances[_account] > 0 && // Account had participated already
bounties[_account] + _amount <= 1000000 // no more than 100 token units per account
) {
issueTo(_account, _amount);
return true;
} else {
return false;
}
}
} | buy | function buy() adjustPrice payable external {
require(msg.value >= buyPrice_wie);
var amount = safeDiv(msg.value, buyPrice_wie);
assignBountryToReferals(msg.sender, amount); // First assign bounty
// Buy discount if User is a new user and has set referral
if ( balances[msg.sender] == 0 && referrals[msg.sender][0] != 0 ) {
// Check that user has to wait at least two weeks before he get break even on what he will get
amount = amount * (100 + landingDiscount_ppc) / 100;
}
issueTo(msg.sender, amount);
}
| /*
* EXTERNAL METHOD
* User can buy arbitrary amount of tokens. Before amount of tokens will be calculated, the price of tokens
* has to be adjusted. This happens in adjustPrice modified before function call.
*
* Short description of this method
*
* Calculate tokens that user is buying
* Assign awards ro refereals
* Add some bounty for new users who set referral before first buy
* Send tokens that belong to contract or if there is non issue more and send them to user
*
* Read -> https://github.com/triangles-things/fish.project/blob/master/terms-of-use.md
*/ | Comment | v0.4.15+commit.bbb8e64f | bzzr://4613992a993e1bbc51872aa0c9329a881775179ceea4634a49734b7b20cbfb32 | {
"func_code_index": [
4380,
4976
]
} | 8,602 |
|||
Fish | Fish.sol | 0x80c1a36dcbdca742f59f09fda16c43e6ad877c2b | Solidity | Fish | contract Fish is owned, StandardToken {
string public constant TermsOfUse = "https://github.com/triangles-things/fish.project/blob/master/terms-of-use.md";
/*
* State variables
*/
string public constant symbol = "FSH";
string public constant name = "Fish";
uint8 public constant decimals = 3;
/*
* Constructor function
*/
function Fish() {
owner = msg.sender;
balances[msg.sender] = 1; // Owner can now be a referral
totalSupply = 1;
buyPrice_wie= 100000000000000; // 100 szabo per one token. One unit = 1000 tokens. 1 ether = 10 units
sellPrice_wie = buyPrice_wie * sell_ppc / 100;
}
function () payable { revert(); }
/*
* SECTION: PRICE GROWTH
*
* This section is responsible for daily price increase. Once per day the buy price will be increased
* through adjustPrice modifier. The price update happens before buy and sell functions are executed.
* Contract owner has only one way to control the growth rate here - setGrowth.
*/
// Growth rate is present in parts per million (ppm)
uint32 public dailyGrowth_ppm = 6100; // default growth is 20% (0.61% per day)
uint public dailyGrowthUpdated_date = now; // Don't update it on first day of contract
uint32 private constant dailyGrowthMin_ppm = 6096; // 20% every month in price growth or 0.00610 daily
uint32 private constant dailyGrowthMax_ppm = 23374; // 100% in growth every month or 0,02337 daily
uint32 public constant sell_ppc = 90; // Sell price is 90% of buy price
event DailyGrowthUpdate(uint _newRate_ppm);
event PriceAdjusted(uint _newBuyPrice_wei, uint _newSellPrice_wei);
/*
* MODIFIER
* If last update happened more than one day ago, update the price, save the time of current price update
* Adjust sell price and log the event
*/
modifier adjustPrice() {
if ( (dailyGrowthUpdated_date + 1 days) < now ) {
dailyGrowthUpdated_date = now;
buyPrice_wie = buyPrice_wie * (1000000 + dailyGrowth_ppm) / 1000000;
sellPrice_wie = buyPrice_wie * sell_ppc / 100;
PriceAdjusted(buyPrice_wie, sellPrice_wie);
}
_;
}
/*
* OWNER ONLY; EXTERNAL METHOD
* setGrowth can accept values within range from 20% to 100% of growth per month (based on 30 days per month assumption).
*
* Formula is:
*
* buyPrice_eth = buyPrice_eth * (1000000 + dailyGrowthMin_ppm) / 1000000;
* ^new value ^current value ^1.0061 (if dailyGrowth_ppm == 6100)
*
* 1.0061^30 = 1.20 (if dailyGrowth_ppm == 6100)
* 1.023374^30 = 2 (if dailyGrowth_ppm == 23374)
*
* Some other daily rates
*
* Per month -> Value in ppm
* 1.3 -> 8783
* 1.4 -> 11278
* 1.5 -> 13607
* 1.6 -> 15790
* 1.7 -> 17844
* 1.8 -> 19786
*/
function setGrowth(uint32 _newGrowth_ppm) onlyOwner external returns(bool result) {
if (_newGrowth_ppm >= dailyGrowthMin_ppm &&
_newGrowth_ppm <= dailyGrowthMax_ppm
) {
dailyGrowth_ppm = _newGrowth_ppm;
DailyGrowthUpdate(_newGrowth_ppm);
return true;
} else {
return false;
}
}
/*
* SECTION: TRADING
*
* This section is responsible purely for trading the tokens. User can buy tokens, user can sell tokens.
*
*/
uint256 public sellPrice_wie;
uint256 public buyPrice_wie;
/*
* EXTERNAL METHOD
* User can buy arbitrary amount of tokens. Before amount of tokens will be calculated, the price of tokens
* has to be adjusted. This happens in adjustPrice modified before function call.
*
* Short description of this method
*
* Calculate tokens that user is buying
* Assign awards ro refereals
* Add some bounty for new users who set referral before first buy
* Send tokens that belong to contract or if there is non issue more and send them to user
*
* Read -> https://github.com/triangles-things/fish.project/blob/master/terms-of-use.md
*/
function buy() adjustPrice payable external {
require(msg.value >= buyPrice_wie);
var amount = safeDiv(msg.value, buyPrice_wie);
assignBountryToReferals(msg.sender, amount); // First assign bounty
// Buy discount if User is a new user and has set referral
if ( balances[msg.sender] == 0 && referrals[msg.sender][0] != 0 ) {
// Check that user has to wait at least two weeks before he get break even on what he will get
amount = amount * (100 + landingDiscount_ppc) / 100;
}
issueTo(msg.sender, amount);
}
/*
* EXTERNAL METHOD
* User can sell tokens back to contract.
*
* Short description of this method
*
* Adjust price
* Calculate tokens price that user is selling
* Make all possible checks
* Transfer the money
*/
function sell(uint256 _amount) adjustPrice external {
require(_amount > 0 && balances[msg.sender] >= _amount);
uint moneyWorth = safeMul(_amount, sellPrice_wie);
require(this.balance > moneyWorth); // We can't sell if we don't have enough money
if (
balances[this] + _amount > balances[this] &&
balances[msg.sender] - _amount < balances[msg.sender]
) {
balances[this] = safeAdd(balances[this], _amount); // adds the amount to owner's balance
balances[msg.sender] = safeSub(balances[msg.sender], _amount); // subtracts the amount from seller's balance
if (!msg.sender.send(moneyWorth)) { // sends ether to the seller. It's important
revert(); // to do this last to avoid recursion attacks
} else {
Transfer(msg.sender, this, _amount); // executes an event reflecting on the change
}
} else {
revert(); // checks if the sender has enough to sell
}
}
/*
* PRIVATE METHOD
* Issue new tokens to contract
*/
function issueTo(address _beneficiary, uint256 _amount_tkns) private {
if (
balances[this] >= _amount_tkns
) {
// All tokens are taken from balance
balances[this] = safeSub(balances[this], _amount_tkns);
balances[_beneficiary] = safeAdd(balances[_beneficiary], _amount_tkns);
} else {
// Balance will be lowered and new tokens will be issued
uint diff = safeSub(_amount_tkns, balances[this]);
totalSupply = safeAdd(totalSupply, diff);
balances[this] = 0;
balances[_beneficiary] = safeAdd(balances[_beneficiary], _amount_tkns);
}
Transfer(this, _beneficiary, _amount_tkns);
}
/*
* SECTION: BOUNTIES
*
* This section describes all possible awards.
*/
mapping(address => address[3]) referrals;
mapping(address => uint256) bounties;
uint32 public constant landingDiscount_ppc = 4; // Landing discount is 4%
/*
* EXTERNAL METHOD
* Set your referral first. You will get 4% more tokens on your first buy and trigger a
* reward of whoever told you about this contract. A win-win scenario.
*/
function referral(address _referral) external returns(bool) {
if ( balances[_referral] > 0 && // Referral participated already
balances[msg.sender] == 0 && // Sender is a new user
referrals[msg.sender][0] == 0 // Not returning user. User can not reassign their referrals but they can assign them later on
) {
var referral_referrals = referrals[_referral];
referrals[msg.sender] = [_referral, referral_referrals[0], referral_referrals[1]];
return true;
}
return false;
}
/*
* PRIVATE METHOD
* Award bounties to referrals.
*/
function assignBountryToReferals(address _referralsOf, uint256 _amount) private {
var refs = referrals[_referralsOf];
if (refs[0] != 0) {
issueTo(refs[0], (_amount * 4) / 100); // 4% bounty to direct referral
if (refs[1] != 0) {
issueTo(refs[1], (_amount * 2) / 100); // 2% bounty to referral of referral
if (refs[2] != 0) {
issueTo(refs[2], (_amount * 1) / 100); // 1% bounty to referral of referral of referral
}
}
}
}
/*
* OWNER ONLY; EXTERNAL METHOD
* Santa is coming! Who ever made impact to promote the Fish and can prove it will get the bonus
*/
function assignBounty(address _account, uint256 _amount) onlyOwner external returns(bool) {
require(_amount > 0);
if (balances[_account] > 0 && // Account had participated already
bounties[_account] + _amount <= 1000000 // no more than 100 token units per account
) {
issueTo(_account, _amount);
return true;
} else {
return false;
}
}
} | sell | function sell(uint256 _amount) adjustPrice external {
require(_amount > 0 && balances[msg.sender] >= _amount);
uint moneyWorth = safeMul(_amount, sellPrice_wie);
require(this.balance > moneyWorth); // We can't sell if we don't have enough money
if (
balances[this] + _amount > balances[this] &&
balances[msg.sender] - _amount < balances[msg.sender]
) {
balances[this] = safeAdd(balances[this], _amount); // adds the amount to owner's balance
balances[msg.sender] = safeSub(balances[msg.sender], _amount); // subtracts the amount from seller's balance
if (!msg.sender.send(moneyWorth)) { // sends ether to the seller. It's important
revert(); // to do this last to avoid recursion attacks
} else {
Transfer(msg.sender, this, _amount); // executes an event reflecting on the change
}
} else {
revert(); // checks if the sender has enough to sell
}
}
| /*
* EXTERNAL METHOD
* User can sell tokens back to contract.
*
* Short description of this method
*
* Adjust price
* Calculate tokens price that user is selling
* Make all possible checks
* Transfer the money
*/ | Comment | v0.4.15+commit.bbb8e64f | bzzr://4613992a993e1bbc51872aa0c9329a881775179ceea4634a49734b7b20cbfb32 | {
"func_code_index": [
5244,
6499
]
} | 8,603 |
|||
Fish | Fish.sol | 0x80c1a36dcbdca742f59f09fda16c43e6ad877c2b | Solidity | Fish | contract Fish is owned, StandardToken {
string public constant TermsOfUse = "https://github.com/triangles-things/fish.project/blob/master/terms-of-use.md";
/*
* State variables
*/
string public constant symbol = "FSH";
string public constant name = "Fish";
uint8 public constant decimals = 3;
/*
* Constructor function
*/
function Fish() {
owner = msg.sender;
balances[msg.sender] = 1; // Owner can now be a referral
totalSupply = 1;
buyPrice_wie= 100000000000000; // 100 szabo per one token. One unit = 1000 tokens. 1 ether = 10 units
sellPrice_wie = buyPrice_wie * sell_ppc / 100;
}
function () payable { revert(); }
/*
* SECTION: PRICE GROWTH
*
* This section is responsible for daily price increase. Once per day the buy price will be increased
* through adjustPrice modifier. The price update happens before buy and sell functions are executed.
* Contract owner has only one way to control the growth rate here - setGrowth.
*/
// Growth rate is present in parts per million (ppm)
uint32 public dailyGrowth_ppm = 6100; // default growth is 20% (0.61% per day)
uint public dailyGrowthUpdated_date = now; // Don't update it on first day of contract
uint32 private constant dailyGrowthMin_ppm = 6096; // 20% every month in price growth or 0.00610 daily
uint32 private constant dailyGrowthMax_ppm = 23374; // 100% in growth every month or 0,02337 daily
uint32 public constant sell_ppc = 90; // Sell price is 90% of buy price
event DailyGrowthUpdate(uint _newRate_ppm);
event PriceAdjusted(uint _newBuyPrice_wei, uint _newSellPrice_wei);
/*
* MODIFIER
* If last update happened more than one day ago, update the price, save the time of current price update
* Adjust sell price and log the event
*/
modifier adjustPrice() {
if ( (dailyGrowthUpdated_date + 1 days) < now ) {
dailyGrowthUpdated_date = now;
buyPrice_wie = buyPrice_wie * (1000000 + dailyGrowth_ppm) / 1000000;
sellPrice_wie = buyPrice_wie * sell_ppc / 100;
PriceAdjusted(buyPrice_wie, sellPrice_wie);
}
_;
}
/*
* OWNER ONLY; EXTERNAL METHOD
* setGrowth can accept values within range from 20% to 100% of growth per month (based on 30 days per month assumption).
*
* Formula is:
*
* buyPrice_eth = buyPrice_eth * (1000000 + dailyGrowthMin_ppm) / 1000000;
* ^new value ^current value ^1.0061 (if dailyGrowth_ppm == 6100)
*
* 1.0061^30 = 1.20 (if dailyGrowth_ppm == 6100)
* 1.023374^30 = 2 (if dailyGrowth_ppm == 23374)
*
* Some other daily rates
*
* Per month -> Value in ppm
* 1.3 -> 8783
* 1.4 -> 11278
* 1.5 -> 13607
* 1.6 -> 15790
* 1.7 -> 17844
* 1.8 -> 19786
*/
function setGrowth(uint32 _newGrowth_ppm) onlyOwner external returns(bool result) {
if (_newGrowth_ppm >= dailyGrowthMin_ppm &&
_newGrowth_ppm <= dailyGrowthMax_ppm
) {
dailyGrowth_ppm = _newGrowth_ppm;
DailyGrowthUpdate(_newGrowth_ppm);
return true;
} else {
return false;
}
}
/*
* SECTION: TRADING
*
* This section is responsible purely for trading the tokens. User can buy tokens, user can sell tokens.
*
*/
uint256 public sellPrice_wie;
uint256 public buyPrice_wie;
/*
* EXTERNAL METHOD
* User can buy arbitrary amount of tokens. Before amount of tokens will be calculated, the price of tokens
* has to be adjusted. This happens in adjustPrice modified before function call.
*
* Short description of this method
*
* Calculate tokens that user is buying
* Assign awards ro refereals
* Add some bounty for new users who set referral before first buy
* Send tokens that belong to contract or if there is non issue more and send them to user
*
* Read -> https://github.com/triangles-things/fish.project/blob/master/terms-of-use.md
*/
function buy() adjustPrice payable external {
require(msg.value >= buyPrice_wie);
var amount = safeDiv(msg.value, buyPrice_wie);
assignBountryToReferals(msg.sender, amount); // First assign bounty
// Buy discount if User is a new user and has set referral
if ( balances[msg.sender] == 0 && referrals[msg.sender][0] != 0 ) {
// Check that user has to wait at least two weeks before he get break even on what he will get
amount = amount * (100 + landingDiscount_ppc) / 100;
}
issueTo(msg.sender, amount);
}
/*
* EXTERNAL METHOD
* User can sell tokens back to contract.
*
* Short description of this method
*
* Adjust price
* Calculate tokens price that user is selling
* Make all possible checks
* Transfer the money
*/
function sell(uint256 _amount) adjustPrice external {
require(_amount > 0 && balances[msg.sender] >= _amount);
uint moneyWorth = safeMul(_amount, sellPrice_wie);
require(this.balance > moneyWorth); // We can't sell if we don't have enough money
if (
balances[this] + _amount > balances[this] &&
balances[msg.sender] - _amount < balances[msg.sender]
) {
balances[this] = safeAdd(balances[this], _amount); // adds the amount to owner's balance
balances[msg.sender] = safeSub(balances[msg.sender], _amount); // subtracts the amount from seller's balance
if (!msg.sender.send(moneyWorth)) { // sends ether to the seller. It's important
revert(); // to do this last to avoid recursion attacks
} else {
Transfer(msg.sender, this, _amount); // executes an event reflecting on the change
}
} else {
revert(); // checks if the sender has enough to sell
}
}
/*
* PRIVATE METHOD
* Issue new tokens to contract
*/
function issueTo(address _beneficiary, uint256 _amount_tkns) private {
if (
balances[this] >= _amount_tkns
) {
// All tokens are taken from balance
balances[this] = safeSub(balances[this], _amount_tkns);
balances[_beneficiary] = safeAdd(balances[_beneficiary], _amount_tkns);
} else {
// Balance will be lowered and new tokens will be issued
uint diff = safeSub(_amount_tkns, balances[this]);
totalSupply = safeAdd(totalSupply, diff);
balances[this] = 0;
balances[_beneficiary] = safeAdd(balances[_beneficiary], _amount_tkns);
}
Transfer(this, _beneficiary, _amount_tkns);
}
/*
* SECTION: BOUNTIES
*
* This section describes all possible awards.
*/
mapping(address => address[3]) referrals;
mapping(address => uint256) bounties;
uint32 public constant landingDiscount_ppc = 4; // Landing discount is 4%
/*
* EXTERNAL METHOD
* Set your referral first. You will get 4% more tokens on your first buy and trigger a
* reward of whoever told you about this contract. A win-win scenario.
*/
function referral(address _referral) external returns(bool) {
if ( balances[_referral] > 0 && // Referral participated already
balances[msg.sender] == 0 && // Sender is a new user
referrals[msg.sender][0] == 0 // Not returning user. User can not reassign their referrals but they can assign them later on
) {
var referral_referrals = referrals[_referral];
referrals[msg.sender] = [_referral, referral_referrals[0], referral_referrals[1]];
return true;
}
return false;
}
/*
* PRIVATE METHOD
* Award bounties to referrals.
*/
function assignBountryToReferals(address _referralsOf, uint256 _amount) private {
var refs = referrals[_referralsOf];
if (refs[0] != 0) {
issueTo(refs[0], (_amount * 4) / 100); // 4% bounty to direct referral
if (refs[1] != 0) {
issueTo(refs[1], (_amount * 2) / 100); // 2% bounty to referral of referral
if (refs[2] != 0) {
issueTo(refs[2], (_amount * 1) / 100); // 1% bounty to referral of referral of referral
}
}
}
}
/*
* OWNER ONLY; EXTERNAL METHOD
* Santa is coming! Who ever made impact to promote the Fish and can prove it will get the bonus
*/
function assignBounty(address _account, uint256 _amount) onlyOwner external returns(bool) {
require(_amount > 0);
if (balances[_account] > 0 && // Account had participated already
bounties[_account] + _amount <= 1000000 // no more than 100 token units per account
) {
issueTo(_account, _amount);
return true;
} else {
return false;
}
}
} | issueTo | function issueTo(address _beneficiary, uint256 _amount_tkns) private {
if (
balances[this] >= _amount_tkns
) {
// All tokens are taken from balance
balances[this] = safeSub(balances[this], _amount_tkns);
balances[_beneficiary] = safeAdd(balances[_beneficiary], _amount_tkns);
} else {
// Balance will be lowered and new tokens will be issued
uint diff = safeSub(_amount_tkns, balances[this]);
totalSupply = safeAdd(totalSupply, diff);
balances[this] = 0;
balances[_beneficiary] = safeAdd(balances[_beneficiary], _amount_tkns);
}
Transfer(this, _beneficiary, _amount_tkns);
}
| /*
* PRIVATE METHOD
* Issue new tokens to contract
*/ | Comment | v0.4.15+commit.bbb8e64f | bzzr://4613992a993e1bbc51872aa0c9329a881775179ceea4634a49734b7b20cbfb32 | {
"func_code_index": [
6572,
7250
]
} | 8,604 |
|||
Fish | Fish.sol | 0x80c1a36dcbdca742f59f09fda16c43e6ad877c2b | Solidity | Fish | contract Fish is owned, StandardToken {
string public constant TermsOfUse = "https://github.com/triangles-things/fish.project/blob/master/terms-of-use.md";
/*
* State variables
*/
string public constant symbol = "FSH";
string public constant name = "Fish";
uint8 public constant decimals = 3;
/*
* Constructor function
*/
function Fish() {
owner = msg.sender;
balances[msg.sender] = 1; // Owner can now be a referral
totalSupply = 1;
buyPrice_wie= 100000000000000; // 100 szabo per one token. One unit = 1000 tokens. 1 ether = 10 units
sellPrice_wie = buyPrice_wie * sell_ppc / 100;
}
function () payable { revert(); }
/*
* SECTION: PRICE GROWTH
*
* This section is responsible for daily price increase. Once per day the buy price will be increased
* through adjustPrice modifier. The price update happens before buy and sell functions are executed.
* Contract owner has only one way to control the growth rate here - setGrowth.
*/
// Growth rate is present in parts per million (ppm)
uint32 public dailyGrowth_ppm = 6100; // default growth is 20% (0.61% per day)
uint public dailyGrowthUpdated_date = now; // Don't update it on first day of contract
uint32 private constant dailyGrowthMin_ppm = 6096; // 20% every month in price growth or 0.00610 daily
uint32 private constant dailyGrowthMax_ppm = 23374; // 100% in growth every month or 0,02337 daily
uint32 public constant sell_ppc = 90; // Sell price is 90% of buy price
event DailyGrowthUpdate(uint _newRate_ppm);
event PriceAdjusted(uint _newBuyPrice_wei, uint _newSellPrice_wei);
/*
* MODIFIER
* If last update happened more than one day ago, update the price, save the time of current price update
* Adjust sell price and log the event
*/
modifier adjustPrice() {
if ( (dailyGrowthUpdated_date + 1 days) < now ) {
dailyGrowthUpdated_date = now;
buyPrice_wie = buyPrice_wie * (1000000 + dailyGrowth_ppm) / 1000000;
sellPrice_wie = buyPrice_wie * sell_ppc / 100;
PriceAdjusted(buyPrice_wie, sellPrice_wie);
}
_;
}
/*
* OWNER ONLY; EXTERNAL METHOD
* setGrowth can accept values within range from 20% to 100% of growth per month (based on 30 days per month assumption).
*
* Formula is:
*
* buyPrice_eth = buyPrice_eth * (1000000 + dailyGrowthMin_ppm) / 1000000;
* ^new value ^current value ^1.0061 (if dailyGrowth_ppm == 6100)
*
* 1.0061^30 = 1.20 (if dailyGrowth_ppm == 6100)
* 1.023374^30 = 2 (if dailyGrowth_ppm == 23374)
*
* Some other daily rates
*
* Per month -> Value in ppm
* 1.3 -> 8783
* 1.4 -> 11278
* 1.5 -> 13607
* 1.6 -> 15790
* 1.7 -> 17844
* 1.8 -> 19786
*/
function setGrowth(uint32 _newGrowth_ppm) onlyOwner external returns(bool result) {
if (_newGrowth_ppm >= dailyGrowthMin_ppm &&
_newGrowth_ppm <= dailyGrowthMax_ppm
) {
dailyGrowth_ppm = _newGrowth_ppm;
DailyGrowthUpdate(_newGrowth_ppm);
return true;
} else {
return false;
}
}
/*
* SECTION: TRADING
*
* This section is responsible purely for trading the tokens. User can buy tokens, user can sell tokens.
*
*/
uint256 public sellPrice_wie;
uint256 public buyPrice_wie;
/*
* EXTERNAL METHOD
* User can buy arbitrary amount of tokens. Before amount of tokens will be calculated, the price of tokens
* has to be adjusted. This happens in adjustPrice modified before function call.
*
* Short description of this method
*
* Calculate tokens that user is buying
* Assign awards ro refereals
* Add some bounty for new users who set referral before first buy
* Send tokens that belong to contract or if there is non issue more and send them to user
*
* Read -> https://github.com/triangles-things/fish.project/blob/master/terms-of-use.md
*/
function buy() adjustPrice payable external {
require(msg.value >= buyPrice_wie);
var amount = safeDiv(msg.value, buyPrice_wie);
assignBountryToReferals(msg.sender, amount); // First assign bounty
// Buy discount if User is a new user and has set referral
if ( balances[msg.sender] == 0 && referrals[msg.sender][0] != 0 ) {
// Check that user has to wait at least two weeks before he get break even on what he will get
amount = amount * (100 + landingDiscount_ppc) / 100;
}
issueTo(msg.sender, amount);
}
/*
* EXTERNAL METHOD
* User can sell tokens back to contract.
*
* Short description of this method
*
* Adjust price
* Calculate tokens price that user is selling
* Make all possible checks
* Transfer the money
*/
function sell(uint256 _amount) adjustPrice external {
require(_amount > 0 && balances[msg.sender] >= _amount);
uint moneyWorth = safeMul(_amount, sellPrice_wie);
require(this.balance > moneyWorth); // We can't sell if we don't have enough money
if (
balances[this] + _amount > balances[this] &&
balances[msg.sender] - _amount < balances[msg.sender]
) {
balances[this] = safeAdd(balances[this], _amount); // adds the amount to owner's balance
balances[msg.sender] = safeSub(balances[msg.sender], _amount); // subtracts the amount from seller's balance
if (!msg.sender.send(moneyWorth)) { // sends ether to the seller. It's important
revert(); // to do this last to avoid recursion attacks
} else {
Transfer(msg.sender, this, _amount); // executes an event reflecting on the change
}
} else {
revert(); // checks if the sender has enough to sell
}
}
/*
* PRIVATE METHOD
* Issue new tokens to contract
*/
function issueTo(address _beneficiary, uint256 _amount_tkns) private {
if (
balances[this] >= _amount_tkns
) {
// All tokens are taken from balance
balances[this] = safeSub(balances[this], _amount_tkns);
balances[_beneficiary] = safeAdd(balances[_beneficiary], _amount_tkns);
} else {
// Balance will be lowered and new tokens will be issued
uint diff = safeSub(_amount_tkns, balances[this]);
totalSupply = safeAdd(totalSupply, diff);
balances[this] = 0;
balances[_beneficiary] = safeAdd(balances[_beneficiary], _amount_tkns);
}
Transfer(this, _beneficiary, _amount_tkns);
}
/*
* SECTION: BOUNTIES
*
* This section describes all possible awards.
*/
mapping(address => address[3]) referrals;
mapping(address => uint256) bounties;
uint32 public constant landingDiscount_ppc = 4; // Landing discount is 4%
/*
* EXTERNAL METHOD
* Set your referral first. You will get 4% more tokens on your first buy and trigger a
* reward of whoever told you about this contract. A win-win scenario.
*/
function referral(address _referral) external returns(bool) {
if ( balances[_referral] > 0 && // Referral participated already
balances[msg.sender] == 0 && // Sender is a new user
referrals[msg.sender][0] == 0 // Not returning user. User can not reassign their referrals but they can assign them later on
) {
var referral_referrals = referrals[_referral];
referrals[msg.sender] = [_referral, referral_referrals[0], referral_referrals[1]];
return true;
}
return false;
}
/*
* PRIVATE METHOD
* Award bounties to referrals.
*/
function assignBountryToReferals(address _referralsOf, uint256 _amount) private {
var refs = referrals[_referralsOf];
if (refs[0] != 0) {
issueTo(refs[0], (_amount * 4) / 100); // 4% bounty to direct referral
if (refs[1] != 0) {
issueTo(refs[1], (_amount * 2) / 100); // 2% bounty to referral of referral
if (refs[2] != 0) {
issueTo(refs[2], (_amount * 1) / 100); // 1% bounty to referral of referral of referral
}
}
}
}
/*
* OWNER ONLY; EXTERNAL METHOD
* Santa is coming! Who ever made impact to promote the Fish and can prove it will get the bonus
*/
function assignBounty(address _account, uint256 _amount) onlyOwner external returns(bool) {
require(_amount > 0);
if (balances[_account] > 0 && // Account had participated already
bounties[_account] + _amount <= 1000000 // no more than 100 token units per account
) {
issueTo(_account, _amount);
return true;
} else {
return false;
}
}
} | referral | function referral(address _referral) external returns(bool) {
if ( balances[_referral] > 0 && // Referral participated already
balances[msg.sender] == 0 && // Sender is a new user
referrals[msg.sender][0] == 0 // Not returning user. User can not reassign their referrals but they can assign them later on
) {
var referral_referrals = referrals[_referral];
referrals[msg.sender] = [_referral, referral_referrals[0], referral_referrals[1]];
return true;
}
return false;
}
| /*
* EXTERNAL METHOD
* Set your referral first. You will get 4% more tokens on your first buy and trigger a
* reward of whoever told you about this contract. A win-win scenario.
*/ | Comment | v0.4.15+commit.bbb8e64f | bzzr://4613992a993e1bbc51872aa0c9329a881775179ceea4634a49734b7b20cbfb32 | {
"func_code_index": [
7752,
8423
]
} | 8,605 |
|||
Fish | Fish.sol | 0x80c1a36dcbdca742f59f09fda16c43e6ad877c2b | Solidity | Fish | contract Fish is owned, StandardToken {
string public constant TermsOfUse = "https://github.com/triangles-things/fish.project/blob/master/terms-of-use.md";
/*
* State variables
*/
string public constant symbol = "FSH";
string public constant name = "Fish";
uint8 public constant decimals = 3;
/*
* Constructor function
*/
function Fish() {
owner = msg.sender;
balances[msg.sender] = 1; // Owner can now be a referral
totalSupply = 1;
buyPrice_wie= 100000000000000; // 100 szabo per one token. One unit = 1000 tokens. 1 ether = 10 units
sellPrice_wie = buyPrice_wie * sell_ppc / 100;
}
function () payable { revert(); }
/*
* SECTION: PRICE GROWTH
*
* This section is responsible for daily price increase. Once per day the buy price will be increased
* through adjustPrice modifier. The price update happens before buy and sell functions are executed.
* Contract owner has only one way to control the growth rate here - setGrowth.
*/
// Growth rate is present in parts per million (ppm)
uint32 public dailyGrowth_ppm = 6100; // default growth is 20% (0.61% per day)
uint public dailyGrowthUpdated_date = now; // Don't update it on first day of contract
uint32 private constant dailyGrowthMin_ppm = 6096; // 20% every month in price growth or 0.00610 daily
uint32 private constant dailyGrowthMax_ppm = 23374; // 100% in growth every month or 0,02337 daily
uint32 public constant sell_ppc = 90; // Sell price is 90% of buy price
event DailyGrowthUpdate(uint _newRate_ppm);
event PriceAdjusted(uint _newBuyPrice_wei, uint _newSellPrice_wei);
/*
* MODIFIER
* If last update happened more than one day ago, update the price, save the time of current price update
* Adjust sell price and log the event
*/
modifier adjustPrice() {
if ( (dailyGrowthUpdated_date + 1 days) < now ) {
dailyGrowthUpdated_date = now;
buyPrice_wie = buyPrice_wie * (1000000 + dailyGrowth_ppm) / 1000000;
sellPrice_wie = buyPrice_wie * sell_ppc / 100;
PriceAdjusted(buyPrice_wie, sellPrice_wie);
}
_;
}
/*
* OWNER ONLY; EXTERNAL METHOD
* setGrowth can accept values within range from 20% to 100% of growth per month (based on 30 days per month assumption).
*
* Formula is:
*
* buyPrice_eth = buyPrice_eth * (1000000 + dailyGrowthMin_ppm) / 1000000;
* ^new value ^current value ^1.0061 (if dailyGrowth_ppm == 6100)
*
* 1.0061^30 = 1.20 (if dailyGrowth_ppm == 6100)
* 1.023374^30 = 2 (if dailyGrowth_ppm == 23374)
*
* Some other daily rates
*
* Per month -> Value in ppm
* 1.3 -> 8783
* 1.4 -> 11278
* 1.5 -> 13607
* 1.6 -> 15790
* 1.7 -> 17844
* 1.8 -> 19786
*/
function setGrowth(uint32 _newGrowth_ppm) onlyOwner external returns(bool result) {
if (_newGrowth_ppm >= dailyGrowthMin_ppm &&
_newGrowth_ppm <= dailyGrowthMax_ppm
) {
dailyGrowth_ppm = _newGrowth_ppm;
DailyGrowthUpdate(_newGrowth_ppm);
return true;
} else {
return false;
}
}
/*
* SECTION: TRADING
*
* This section is responsible purely for trading the tokens. User can buy tokens, user can sell tokens.
*
*/
uint256 public sellPrice_wie;
uint256 public buyPrice_wie;
/*
* EXTERNAL METHOD
* User can buy arbitrary amount of tokens. Before amount of tokens will be calculated, the price of tokens
* has to be adjusted. This happens in adjustPrice modified before function call.
*
* Short description of this method
*
* Calculate tokens that user is buying
* Assign awards ro refereals
* Add some bounty for new users who set referral before first buy
* Send tokens that belong to contract or if there is non issue more and send them to user
*
* Read -> https://github.com/triangles-things/fish.project/blob/master/terms-of-use.md
*/
function buy() adjustPrice payable external {
require(msg.value >= buyPrice_wie);
var amount = safeDiv(msg.value, buyPrice_wie);
assignBountryToReferals(msg.sender, amount); // First assign bounty
// Buy discount if User is a new user and has set referral
if ( balances[msg.sender] == 0 && referrals[msg.sender][0] != 0 ) {
// Check that user has to wait at least two weeks before he get break even on what he will get
amount = amount * (100 + landingDiscount_ppc) / 100;
}
issueTo(msg.sender, amount);
}
/*
* EXTERNAL METHOD
* User can sell tokens back to contract.
*
* Short description of this method
*
* Adjust price
* Calculate tokens price that user is selling
* Make all possible checks
* Transfer the money
*/
function sell(uint256 _amount) adjustPrice external {
require(_amount > 0 && balances[msg.sender] >= _amount);
uint moneyWorth = safeMul(_amount, sellPrice_wie);
require(this.balance > moneyWorth); // We can't sell if we don't have enough money
if (
balances[this] + _amount > balances[this] &&
balances[msg.sender] - _amount < balances[msg.sender]
) {
balances[this] = safeAdd(balances[this], _amount); // adds the amount to owner's balance
balances[msg.sender] = safeSub(balances[msg.sender], _amount); // subtracts the amount from seller's balance
if (!msg.sender.send(moneyWorth)) { // sends ether to the seller. It's important
revert(); // to do this last to avoid recursion attacks
} else {
Transfer(msg.sender, this, _amount); // executes an event reflecting on the change
}
} else {
revert(); // checks if the sender has enough to sell
}
}
/*
* PRIVATE METHOD
* Issue new tokens to contract
*/
function issueTo(address _beneficiary, uint256 _amount_tkns) private {
if (
balances[this] >= _amount_tkns
) {
// All tokens are taken from balance
balances[this] = safeSub(balances[this], _amount_tkns);
balances[_beneficiary] = safeAdd(balances[_beneficiary], _amount_tkns);
} else {
// Balance will be lowered and new tokens will be issued
uint diff = safeSub(_amount_tkns, balances[this]);
totalSupply = safeAdd(totalSupply, diff);
balances[this] = 0;
balances[_beneficiary] = safeAdd(balances[_beneficiary], _amount_tkns);
}
Transfer(this, _beneficiary, _amount_tkns);
}
/*
* SECTION: BOUNTIES
*
* This section describes all possible awards.
*/
mapping(address => address[3]) referrals;
mapping(address => uint256) bounties;
uint32 public constant landingDiscount_ppc = 4; // Landing discount is 4%
/*
* EXTERNAL METHOD
* Set your referral first. You will get 4% more tokens on your first buy and trigger a
* reward of whoever told you about this contract. A win-win scenario.
*/
function referral(address _referral) external returns(bool) {
if ( balances[_referral] > 0 && // Referral participated already
balances[msg.sender] == 0 && // Sender is a new user
referrals[msg.sender][0] == 0 // Not returning user. User can not reassign their referrals but they can assign them later on
) {
var referral_referrals = referrals[_referral];
referrals[msg.sender] = [_referral, referral_referrals[0], referral_referrals[1]];
return true;
}
return false;
}
/*
* PRIVATE METHOD
* Award bounties to referrals.
*/
function assignBountryToReferals(address _referralsOf, uint256 _amount) private {
var refs = referrals[_referralsOf];
if (refs[0] != 0) {
issueTo(refs[0], (_amount * 4) / 100); // 4% bounty to direct referral
if (refs[1] != 0) {
issueTo(refs[1], (_amount * 2) / 100); // 2% bounty to referral of referral
if (refs[2] != 0) {
issueTo(refs[2], (_amount * 1) / 100); // 1% bounty to referral of referral of referral
}
}
}
}
/*
* OWNER ONLY; EXTERNAL METHOD
* Santa is coming! Who ever made impact to promote the Fish and can prove it will get the bonus
*/
function assignBounty(address _account, uint256 _amount) onlyOwner external returns(bool) {
require(_amount > 0);
if (balances[_account] > 0 && // Account had participated already
bounties[_account] + _amount <= 1000000 // no more than 100 token units per account
) {
issueTo(_account, _amount);
return true;
} else {
return false;
}
}
} | assignBountryToReferals | function assignBountryToReferals(address _referralsOf, uint256 _amount) private {
var refs = referrals[_referralsOf];
if (refs[0] != 0) {
issueTo(refs[0], (_amount * 4) / 100); // 4% bounty to direct referral
if (refs[1] != 0) {
issueTo(refs[1], (_amount * 2) / 100); // 2% bounty to referral of referral
if (refs[2] != 0) {
issueTo(refs[2], (_amount * 1) / 100); // 1% bounty to referral of referral of referral
}
}
}
}
| /*
* PRIVATE METHOD
* Award bounties to referrals.
*/ | Comment | v0.4.15+commit.bbb8e64f | bzzr://4613992a993e1bbc51872aa0c9329a881775179ceea4634a49734b7b20cbfb32 | {
"func_code_index": [
8496,
9100
]
} | 8,606 |
|||
Fish | Fish.sol | 0x80c1a36dcbdca742f59f09fda16c43e6ad877c2b | Solidity | Fish | contract Fish is owned, StandardToken {
string public constant TermsOfUse = "https://github.com/triangles-things/fish.project/blob/master/terms-of-use.md";
/*
* State variables
*/
string public constant symbol = "FSH";
string public constant name = "Fish";
uint8 public constant decimals = 3;
/*
* Constructor function
*/
function Fish() {
owner = msg.sender;
balances[msg.sender] = 1; // Owner can now be a referral
totalSupply = 1;
buyPrice_wie= 100000000000000; // 100 szabo per one token. One unit = 1000 tokens. 1 ether = 10 units
sellPrice_wie = buyPrice_wie * sell_ppc / 100;
}
function () payable { revert(); }
/*
* SECTION: PRICE GROWTH
*
* This section is responsible for daily price increase. Once per day the buy price will be increased
* through adjustPrice modifier. The price update happens before buy and sell functions are executed.
* Contract owner has only one way to control the growth rate here - setGrowth.
*/
// Growth rate is present in parts per million (ppm)
uint32 public dailyGrowth_ppm = 6100; // default growth is 20% (0.61% per day)
uint public dailyGrowthUpdated_date = now; // Don't update it on first day of contract
uint32 private constant dailyGrowthMin_ppm = 6096; // 20% every month in price growth or 0.00610 daily
uint32 private constant dailyGrowthMax_ppm = 23374; // 100% in growth every month or 0,02337 daily
uint32 public constant sell_ppc = 90; // Sell price is 90% of buy price
event DailyGrowthUpdate(uint _newRate_ppm);
event PriceAdjusted(uint _newBuyPrice_wei, uint _newSellPrice_wei);
/*
* MODIFIER
* If last update happened more than one day ago, update the price, save the time of current price update
* Adjust sell price and log the event
*/
modifier adjustPrice() {
if ( (dailyGrowthUpdated_date + 1 days) < now ) {
dailyGrowthUpdated_date = now;
buyPrice_wie = buyPrice_wie * (1000000 + dailyGrowth_ppm) / 1000000;
sellPrice_wie = buyPrice_wie * sell_ppc / 100;
PriceAdjusted(buyPrice_wie, sellPrice_wie);
}
_;
}
/*
* OWNER ONLY; EXTERNAL METHOD
* setGrowth can accept values within range from 20% to 100% of growth per month (based on 30 days per month assumption).
*
* Formula is:
*
* buyPrice_eth = buyPrice_eth * (1000000 + dailyGrowthMin_ppm) / 1000000;
* ^new value ^current value ^1.0061 (if dailyGrowth_ppm == 6100)
*
* 1.0061^30 = 1.20 (if dailyGrowth_ppm == 6100)
* 1.023374^30 = 2 (if dailyGrowth_ppm == 23374)
*
* Some other daily rates
*
* Per month -> Value in ppm
* 1.3 -> 8783
* 1.4 -> 11278
* 1.5 -> 13607
* 1.6 -> 15790
* 1.7 -> 17844
* 1.8 -> 19786
*/
function setGrowth(uint32 _newGrowth_ppm) onlyOwner external returns(bool result) {
if (_newGrowth_ppm >= dailyGrowthMin_ppm &&
_newGrowth_ppm <= dailyGrowthMax_ppm
) {
dailyGrowth_ppm = _newGrowth_ppm;
DailyGrowthUpdate(_newGrowth_ppm);
return true;
} else {
return false;
}
}
/*
* SECTION: TRADING
*
* This section is responsible purely for trading the tokens. User can buy tokens, user can sell tokens.
*
*/
uint256 public sellPrice_wie;
uint256 public buyPrice_wie;
/*
* EXTERNAL METHOD
* User can buy arbitrary amount of tokens. Before amount of tokens will be calculated, the price of tokens
* has to be adjusted. This happens in adjustPrice modified before function call.
*
* Short description of this method
*
* Calculate tokens that user is buying
* Assign awards ro refereals
* Add some bounty for new users who set referral before first buy
* Send tokens that belong to contract or if there is non issue more and send them to user
*
* Read -> https://github.com/triangles-things/fish.project/blob/master/terms-of-use.md
*/
function buy() adjustPrice payable external {
require(msg.value >= buyPrice_wie);
var amount = safeDiv(msg.value, buyPrice_wie);
assignBountryToReferals(msg.sender, amount); // First assign bounty
// Buy discount if User is a new user and has set referral
if ( balances[msg.sender] == 0 && referrals[msg.sender][0] != 0 ) {
// Check that user has to wait at least two weeks before he get break even on what he will get
amount = amount * (100 + landingDiscount_ppc) / 100;
}
issueTo(msg.sender, amount);
}
/*
* EXTERNAL METHOD
* User can sell tokens back to contract.
*
* Short description of this method
*
* Adjust price
* Calculate tokens price that user is selling
* Make all possible checks
* Transfer the money
*/
function sell(uint256 _amount) adjustPrice external {
require(_amount > 0 && balances[msg.sender] >= _amount);
uint moneyWorth = safeMul(_amount, sellPrice_wie);
require(this.balance > moneyWorth); // We can't sell if we don't have enough money
if (
balances[this] + _amount > balances[this] &&
balances[msg.sender] - _amount < balances[msg.sender]
) {
balances[this] = safeAdd(balances[this], _amount); // adds the amount to owner's balance
balances[msg.sender] = safeSub(balances[msg.sender], _amount); // subtracts the amount from seller's balance
if (!msg.sender.send(moneyWorth)) { // sends ether to the seller. It's important
revert(); // to do this last to avoid recursion attacks
} else {
Transfer(msg.sender, this, _amount); // executes an event reflecting on the change
}
} else {
revert(); // checks if the sender has enough to sell
}
}
/*
* PRIVATE METHOD
* Issue new tokens to contract
*/
function issueTo(address _beneficiary, uint256 _amount_tkns) private {
if (
balances[this] >= _amount_tkns
) {
// All tokens are taken from balance
balances[this] = safeSub(balances[this], _amount_tkns);
balances[_beneficiary] = safeAdd(balances[_beneficiary], _amount_tkns);
} else {
// Balance will be lowered and new tokens will be issued
uint diff = safeSub(_amount_tkns, balances[this]);
totalSupply = safeAdd(totalSupply, diff);
balances[this] = 0;
balances[_beneficiary] = safeAdd(balances[_beneficiary], _amount_tkns);
}
Transfer(this, _beneficiary, _amount_tkns);
}
/*
* SECTION: BOUNTIES
*
* This section describes all possible awards.
*/
mapping(address => address[3]) referrals;
mapping(address => uint256) bounties;
uint32 public constant landingDiscount_ppc = 4; // Landing discount is 4%
/*
* EXTERNAL METHOD
* Set your referral first. You will get 4% more tokens on your first buy and trigger a
* reward of whoever told you about this contract. A win-win scenario.
*/
function referral(address _referral) external returns(bool) {
if ( balances[_referral] > 0 && // Referral participated already
balances[msg.sender] == 0 && // Sender is a new user
referrals[msg.sender][0] == 0 // Not returning user. User can not reassign their referrals but they can assign them later on
) {
var referral_referrals = referrals[_referral];
referrals[msg.sender] = [_referral, referral_referrals[0], referral_referrals[1]];
return true;
}
return false;
}
/*
* PRIVATE METHOD
* Award bounties to referrals.
*/
function assignBountryToReferals(address _referralsOf, uint256 _amount) private {
var refs = referrals[_referralsOf];
if (refs[0] != 0) {
issueTo(refs[0], (_amount * 4) / 100); // 4% bounty to direct referral
if (refs[1] != 0) {
issueTo(refs[1], (_amount * 2) / 100); // 2% bounty to referral of referral
if (refs[2] != 0) {
issueTo(refs[2], (_amount * 1) / 100); // 1% bounty to referral of referral of referral
}
}
}
}
/*
* OWNER ONLY; EXTERNAL METHOD
* Santa is coming! Who ever made impact to promote the Fish and can prove it will get the bonus
*/
function assignBounty(address _account, uint256 _amount) onlyOwner external returns(bool) {
require(_amount > 0);
if (balances[_account] > 0 && // Account had participated already
bounties[_account] + _amount <= 1000000 // no more than 100 token units per account
) {
issueTo(_account, _amount);
return true;
} else {
return false;
}
}
} | assignBounty | function assignBounty(address _account, uint256 _amount) onlyOwner external returns(bool) {
require(_amount > 0);
if (balances[_account] > 0 && // Account had participated already
bounties[_account] + _amount <= 1000000 // no more than 100 token units per account
) {
issueTo(_account, _amount);
return true;
} else {
return false;
}
}
| /*
* OWNER ONLY; EXTERNAL METHOD
* Santa is coming! Who ever made impact to promote the Fish and can prove it will get the bonus
*/ | Comment | v0.4.15+commit.bbb8e64f | bzzr://4613992a993e1bbc51872aa0c9329a881775179ceea4634a49734b7b20cbfb32 | {
"func_code_index": [
9250,
9732
]
} | 8,607 |
|||
LinguaFranca | @openzeppelin/contracts/token/ERC721/ERC721.sol | 0x9a7a5ff2c9563e96fbbed4dda94d5549b30f1efb | Solidity | ERC721 | contract ERC721 is Context, ERC165, IERC721, IERC721Metadata {
using Address for address;
using Strings for uint256;
// Token name
string private _name;
// Token symbol
string private _symbol;
// Mapping from token ID to owner address
mapping(uint256 => address) private _owners;
// Mapping owner address to token count
mapping(address => uint256) private _balances;
// Mapping from token ID to approved address
mapping(uint256 => address) private _tokenApprovals;
// Mapping from owner to operator approvals
mapping(address => mapping(address => bool)) private _operatorApprovals;
/**
* @dev Initializes the contract by setting a `name` and a `symbol` to the token collection.
*/
constructor(string memory name_, string memory symbol_) {
_name = name_;
_symbol = symbol_;
}
/**
* @dev See {IERC165-supportsInterface}.
*/
function supportsInterface(bytes4 interfaceId) public view virtual override(ERC165, IERC165) returns (bool) {
return
interfaceId == type(IERC721).interfaceId ||
interfaceId == type(IERC721Metadata).interfaceId ||
super.supportsInterface(interfaceId);
}
/**
* @dev See {IERC721-balanceOf}.
*/
function balanceOf(address owner) public view virtual override returns (uint256) {
require(owner != address(0), "ERC721: balance query for the zero address");
return _balances[owner];
}
/**
* @dev See {IERC721-ownerOf}.
*/
function ownerOf(uint256 tokenId) public view virtual override returns (address) {
address owner = _owners[tokenId];
require(owner != address(0), "ERC721: owner query for nonexistent token");
return owner;
}
/**
* @dev See {IERC721Metadata-name}.
*/
function name() public view virtual override returns (string memory) {
return _name;
}
/**
* @dev See {IERC721Metadata-symbol}.
*/
function symbol() public view virtual override returns (string memory) {
return _symbol;
}
/**
* @dev See {IERC721Metadata-tokenURI}.
*/
function tokenURI(uint256 tokenId) public view virtual override returns (string memory) {
require(_exists(tokenId), "ERC721Metadata: URI query for nonexistent token");
string memory baseURI = _baseURI();
return bytes(baseURI).length > 0 ? string(abi.encodePacked(baseURI, tokenId.toString())) : "";
}
/**
* @dev Base URI for computing {tokenURI}. If set, the resulting URI for each
* token will be the concatenation of the `baseURI` and the `tokenId`. Empty
* by default, can be overriden in child contracts.
*/
function _baseURI() internal view virtual returns (string memory) {
return "";
}
/**
* @dev See {IERC721-approve}.
*/
function approve(address to, uint256 tokenId) public virtual override {
address owner = ERC721.ownerOf(tokenId);
require(to != owner, "ERC721: approval to current owner");
require(
_msgSender() == owner || isApprovedForAll(owner, _msgSender()),
"ERC721: approve caller is not owner nor approved for all"
);
_approve(to, tokenId);
}
/**
* @dev See {IERC721-getApproved}.
*/
function getApproved(uint256 tokenId) public view virtual override returns (address) {
require(_exists(tokenId), "ERC721: approved query for nonexistent token");
return _tokenApprovals[tokenId];
}
/**
* @dev See {IERC721-setApprovalForAll}.
*/
function setApprovalForAll(address operator, bool approved) public virtual override {
require(operator != _msgSender(), "ERC721: approve to caller");
_operatorApprovals[_msgSender()][operator] = approved;
emit ApprovalForAll(_msgSender(), operator, approved);
}
/**
* @dev See {IERC721-isApprovedForAll}.
*/
function isApprovedForAll(address owner, address operator) public view virtual override returns (bool) {
return _operatorApprovals[owner][operator];
}
/**
* @dev See {IERC721-transferFrom}.
*/
function transferFrom(
address from,
address to,
uint256 tokenId
) public virtual override {
//solhint-disable-next-line max-line-length
require(_isApprovedOrOwner(_msgSender(), tokenId), "ERC721: transfer caller is not owner nor approved");
_transfer(from, to, tokenId);
}
/**
* @dev See {IERC721-safeTransferFrom}.
*/
function safeTransferFrom(
address from,
address to,
uint256 tokenId
) public virtual override {
safeTransferFrom(from, to, tokenId, "");
}
/**
* @dev See {IERC721-safeTransferFrom}.
*/
function safeTransferFrom(
address from,
address to,
uint256 tokenId,
bytes memory _data
) public virtual override {
require(_isApprovedOrOwner(_msgSender(), tokenId), "ERC721: transfer caller is not owner nor approved");
_safeTransfer(from, to, tokenId, _data);
}
function _safeTransfer(
address from,
address to,
uint256 tokenId,
bytes memory _data
) internal virtual {
_transfer(from, to, tokenId);
require(_checkOnERC721Received(from, to, tokenId, _data), "ERC721: transfer to non ERC721Receiver implementer");
}
function _exists(uint256 tokenId) internal view virtual returns (bool) {
return _owners[tokenId] != address(0);
}
function _isApprovedOrOwner(address spender, uint256 tokenId) internal view virtual returns (bool) {
require(_exists(tokenId), "ERC721: operator query for nonexistent token");
address owner = ERC721.ownerOf(tokenId);
return (spender == owner || getApproved(tokenId) == spender || isApprovedForAll(owner, spender));
}
function _safeMint(address to, uint256 tokenId) internal virtual {
_safeMint(to, tokenId, "");
}
function _safeMint(
address to,
uint256 tokenId,
bytes memory _data
) internal virtual {
_mint(to, tokenId);
require(
_checkOnERC721Received(address(0), to, tokenId, _data),
"ERC721: transfer to non ERC721Receiver implementer"
);
}
function _mint(address to, uint256 tokenId) internal virtual {
require(to != address(0), "ERC721: mint to the zero address");
require(!_exists(tokenId), "ERC721: token already minted");
_beforeTokenTransfer(address(0), to, tokenId);
_balances[to] += 1;
_owners[tokenId] = to;
emit Transfer(address(0), to, tokenId);
}
function _burn(uint256 tokenId) internal virtual {
address owner = ERC721.ownerOf(tokenId);
_beforeTokenTransfer(owner, address(0), tokenId);
// Clear approvals
_approve(address(0), tokenId);
_balances[owner] -= 1;
delete _owners[tokenId];
emit Transfer(owner, address(0), tokenId);
}
function _transfer(
address from,
address to,
uint256 tokenId
) internal virtual {
require(ERC721.ownerOf(tokenId) == from, "ERC721: transfer of token that is not own");
require(to != address(0), "ERC721: transfer to the zero address");
_beforeTokenTransfer(from, to, tokenId);
// Clear approvals from the previous owner
_approve(address(0), tokenId);
_balances[from] -= 1;
_balances[to] += 1;
_owners[tokenId] = to;
emit Transfer(from, to, tokenId);
}
/**
* @dev Approve `to` to operate on `tokenId`
*
* Emits a {Approval} event.
*/
function _approve(address to, uint256 tokenId) internal virtual {
_tokenApprovals[tokenId] = to;
emit Approval(ERC721.ownerOf(tokenId), to, tokenId);
}
function _checkOnERC721Received(
address from,
address to,
uint256 tokenId,
bytes memory _data
) private returns (bool) {
if (to.isContract()) {
try IERC721Receiver(to).onERC721Received(_msgSender(), from, tokenId, _data) returns (bytes4 retval) {
return retval == IERC721Receiver.onERC721Received.selector;
} catch (bytes memory reason) {
if (reason.length == 0) {
revert("ERC721: transfer to non ERC721Receiver implementer");
} else {
assembly {
revert(add(32, reason), mload(reason))
}
}
}
} else {
return true;
}
}
function _beforeTokenTransfer(
address from,
address to,
uint256 tokenId
) internal virtual {}
} | supportsInterface | function supportsInterface(bytes4 interfaceId) public view virtual override(ERC165, IERC165) returns (bool) {
return
interfaceId == type(IERC721).interfaceId ||
interfaceId == type(IERC721Metadata).interfaceId ||
super.supportsInterface(interfaceId);
}
| /**
* @dev See {IERC165-supportsInterface}.
*/ | NatSpecMultiLine | v0.8.7+commit.e28d00a7 | MIT | ipfs://ec30ad3b2c7be55c484ddb84aa17c0c44a22d432c6fab023a60ec5e2d7d4b3de | {
"func_code_index": [
971,
1281
]
} | 8,608 |
||
LinguaFranca | @openzeppelin/contracts/token/ERC721/ERC721.sol | 0x9a7a5ff2c9563e96fbbed4dda94d5549b30f1efb | Solidity | ERC721 | contract ERC721 is Context, ERC165, IERC721, IERC721Metadata {
using Address for address;
using Strings for uint256;
// Token name
string private _name;
// Token symbol
string private _symbol;
// Mapping from token ID to owner address
mapping(uint256 => address) private _owners;
// Mapping owner address to token count
mapping(address => uint256) private _balances;
// Mapping from token ID to approved address
mapping(uint256 => address) private _tokenApprovals;
// Mapping from owner to operator approvals
mapping(address => mapping(address => bool)) private _operatorApprovals;
/**
* @dev Initializes the contract by setting a `name` and a `symbol` to the token collection.
*/
constructor(string memory name_, string memory symbol_) {
_name = name_;
_symbol = symbol_;
}
/**
* @dev See {IERC165-supportsInterface}.
*/
function supportsInterface(bytes4 interfaceId) public view virtual override(ERC165, IERC165) returns (bool) {
return
interfaceId == type(IERC721).interfaceId ||
interfaceId == type(IERC721Metadata).interfaceId ||
super.supportsInterface(interfaceId);
}
/**
* @dev See {IERC721-balanceOf}.
*/
function balanceOf(address owner) public view virtual override returns (uint256) {
require(owner != address(0), "ERC721: balance query for the zero address");
return _balances[owner];
}
/**
* @dev See {IERC721-ownerOf}.
*/
function ownerOf(uint256 tokenId) public view virtual override returns (address) {
address owner = _owners[tokenId];
require(owner != address(0), "ERC721: owner query for nonexistent token");
return owner;
}
/**
* @dev See {IERC721Metadata-name}.
*/
function name() public view virtual override returns (string memory) {
return _name;
}
/**
* @dev See {IERC721Metadata-symbol}.
*/
function symbol() public view virtual override returns (string memory) {
return _symbol;
}
/**
* @dev See {IERC721Metadata-tokenURI}.
*/
function tokenURI(uint256 tokenId) public view virtual override returns (string memory) {
require(_exists(tokenId), "ERC721Metadata: URI query for nonexistent token");
string memory baseURI = _baseURI();
return bytes(baseURI).length > 0 ? string(abi.encodePacked(baseURI, tokenId.toString())) : "";
}
/**
* @dev Base URI for computing {tokenURI}. If set, the resulting URI for each
* token will be the concatenation of the `baseURI` and the `tokenId`. Empty
* by default, can be overriden in child contracts.
*/
function _baseURI() internal view virtual returns (string memory) {
return "";
}
/**
* @dev See {IERC721-approve}.
*/
function approve(address to, uint256 tokenId) public virtual override {
address owner = ERC721.ownerOf(tokenId);
require(to != owner, "ERC721: approval to current owner");
require(
_msgSender() == owner || isApprovedForAll(owner, _msgSender()),
"ERC721: approve caller is not owner nor approved for all"
);
_approve(to, tokenId);
}
/**
* @dev See {IERC721-getApproved}.
*/
function getApproved(uint256 tokenId) public view virtual override returns (address) {
require(_exists(tokenId), "ERC721: approved query for nonexistent token");
return _tokenApprovals[tokenId];
}
/**
* @dev See {IERC721-setApprovalForAll}.
*/
function setApprovalForAll(address operator, bool approved) public virtual override {
require(operator != _msgSender(), "ERC721: approve to caller");
_operatorApprovals[_msgSender()][operator] = approved;
emit ApprovalForAll(_msgSender(), operator, approved);
}
/**
* @dev See {IERC721-isApprovedForAll}.
*/
function isApprovedForAll(address owner, address operator) public view virtual override returns (bool) {
return _operatorApprovals[owner][operator];
}
/**
* @dev See {IERC721-transferFrom}.
*/
function transferFrom(
address from,
address to,
uint256 tokenId
) public virtual override {
//solhint-disable-next-line max-line-length
require(_isApprovedOrOwner(_msgSender(), tokenId), "ERC721: transfer caller is not owner nor approved");
_transfer(from, to, tokenId);
}
/**
* @dev See {IERC721-safeTransferFrom}.
*/
function safeTransferFrom(
address from,
address to,
uint256 tokenId
) public virtual override {
safeTransferFrom(from, to, tokenId, "");
}
/**
* @dev See {IERC721-safeTransferFrom}.
*/
function safeTransferFrom(
address from,
address to,
uint256 tokenId,
bytes memory _data
) public virtual override {
require(_isApprovedOrOwner(_msgSender(), tokenId), "ERC721: transfer caller is not owner nor approved");
_safeTransfer(from, to, tokenId, _data);
}
function _safeTransfer(
address from,
address to,
uint256 tokenId,
bytes memory _data
) internal virtual {
_transfer(from, to, tokenId);
require(_checkOnERC721Received(from, to, tokenId, _data), "ERC721: transfer to non ERC721Receiver implementer");
}
function _exists(uint256 tokenId) internal view virtual returns (bool) {
return _owners[tokenId] != address(0);
}
function _isApprovedOrOwner(address spender, uint256 tokenId) internal view virtual returns (bool) {
require(_exists(tokenId), "ERC721: operator query for nonexistent token");
address owner = ERC721.ownerOf(tokenId);
return (spender == owner || getApproved(tokenId) == spender || isApprovedForAll(owner, spender));
}
function _safeMint(address to, uint256 tokenId) internal virtual {
_safeMint(to, tokenId, "");
}
function _safeMint(
address to,
uint256 tokenId,
bytes memory _data
) internal virtual {
_mint(to, tokenId);
require(
_checkOnERC721Received(address(0), to, tokenId, _data),
"ERC721: transfer to non ERC721Receiver implementer"
);
}
function _mint(address to, uint256 tokenId) internal virtual {
require(to != address(0), "ERC721: mint to the zero address");
require(!_exists(tokenId), "ERC721: token already minted");
_beforeTokenTransfer(address(0), to, tokenId);
_balances[to] += 1;
_owners[tokenId] = to;
emit Transfer(address(0), to, tokenId);
}
function _burn(uint256 tokenId) internal virtual {
address owner = ERC721.ownerOf(tokenId);
_beforeTokenTransfer(owner, address(0), tokenId);
// Clear approvals
_approve(address(0), tokenId);
_balances[owner] -= 1;
delete _owners[tokenId];
emit Transfer(owner, address(0), tokenId);
}
function _transfer(
address from,
address to,
uint256 tokenId
) internal virtual {
require(ERC721.ownerOf(tokenId) == from, "ERC721: transfer of token that is not own");
require(to != address(0), "ERC721: transfer to the zero address");
_beforeTokenTransfer(from, to, tokenId);
// Clear approvals from the previous owner
_approve(address(0), tokenId);
_balances[from] -= 1;
_balances[to] += 1;
_owners[tokenId] = to;
emit Transfer(from, to, tokenId);
}
/**
* @dev Approve `to` to operate on `tokenId`
*
* Emits a {Approval} event.
*/
function _approve(address to, uint256 tokenId) internal virtual {
_tokenApprovals[tokenId] = to;
emit Approval(ERC721.ownerOf(tokenId), to, tokenId);
}
function _checkOnERC721Received(
address from,
address to,
uint256 tokenId,
bytes memory _data
) private returns (bool) {
if (to.isContract()) {
try IERC721Receiver(to).onERC721Received(_msgSender(), from, tokenId, _data) returns (bytes4 retval) {
return retval == IERC721Receiver.onERC721Received.selector;
} catch (bytes memory reason) {
if (reason.length == 0) {
revert("ERC721: transfer to non ERC721Receiver implementer");
} else {
assembly {
revert(add(32, reason), mload(reason))
}
}
}
} else {
return true;
}
}
function _beforeTokenTransfer(
address from,
address to,
uint256 tokenId
) internal virtual {}
} | balanceOf | function balanceOf(address owner) public view virtual override returns (uint256) {
require(owner != address(0), "ERC721: balance query for the zero address");
return _balances[owner];
}
| /**
* @dev See {IERC721-balanceOf}.
*/ | NatSpecMultiLine | v0.8.7+commit.e28d00a7 | MIT | ipfs://ec30ad3b2c7be55c484ddb84aa17c0c44a22d432c6fab023a60ec5e2d7d4b3de | {
"func_code_index": [
1340,
1553
]
} | 8,609 |
||
LinguaFranca | @openzeppelin/contracts/token/ERC721/ERC721.sol | 0x9a7a5ff2c9563e96fbbed4dda94d5549b30f1efb | Solidity | ERC721 | contract ERC721 is Context, ERC165, IERC721, IERC721Metadata {
using Address for address;
using Strings for uint256;
// Token name
string private _name;
// Token symbol
string private _symbol;
// Mapping from token ID to owner address
mapping(uint256 => address) private _owners;
// Mapping owner address to token count
mapping(address => uint256) private _balances;
// Mapping from token ID to approved address
mapping(uint256 => address) private _tokenApprovals;
// Mapping from owner to operator approvals
mapping(address => mapping(address => bool)) private _operatorApprovals;
/**
* @dev Initializes the contract by setting a `name` and a `symbol` to the token collection.
*/
constructor(string memory name_, string memory symbol_) {
_name = name_;
_symbol = symbol_;
}
/**
* @dev See {IERC165-supportsInterface}.
*/
function supportsInterface(bytes4 interfaceId) public view virtual override(ERC165, IERC165) returns (bool) {
return
interfaceId == type(IERC721).interfaceId ||
interfaceId == type(IERC721Metadata).interfaceId ||
super.supportsInterface(interfaceId);
}
/**
* @dev See {IERC721-balanceOf}.
*/
function balanceOf(address owner) public view virtual override returns (uint256) {
require(owner != address(0), "ERC721: balance query for the zero address");
return _balances[owner];
}
/**
* @dev See {IERC721-ownerOf}.
*/
function ownerOf(uint256 tokenId) public view virtual override returns (address) {
address owner = _owners[tokenId];
require(owner != address(0), "ERC721: owner query for nonexistent token");
return owner;
}
/**
* @dev See {IERC721Metadata-name}.
*/
function name() public view virtual override returns (string memory) {
return _name;
}
/**
* @dev See {IERC721Metadata-symbol}.
*/
function symbol() public view virtual override returns (string memory) {
return _symbol;
}
/**
* @dev See {IERC721Metadata-tokenURI}.
*/
function tokenURI(uint256 tokenId) public view virtual override returns (string memory) {
require(_exists(tokenId), "ERC721Metadata: URI query for nonexistent token");
string memory baseURI = _baseURI();
return bytes(baseURI).length > 0 ? string(abi.encodePacked(baseURI, tokenId.toString())) : "";
}
/**
* @dev Base URI for computing {tokenURI}. If set, the resulting URI for each
* token will be the concatenation of the `baseURI` and the `tokenId`. Empty
* by default, can be overriden in child contracts.
*/
function _baseURI() internal view virtual returns (string memory) {
return "";
}
/**
* @dev See {IERC721-approve}.
*/
function approve(address to, uint256 tokenId) public virtual override {
address owner = ERC721.ownerOf(tokenId);
require(to != owner, "ERC721: approval to current owner");
require(
_msgSender() == owner || isApprovedForAll(owner, _msgSender()),
"ERC721: approve caller is not owner nor approved for all"
);
_approve(to, tokenId);
}
/**
* @dev See {IERC721-getApproved}.
*/
function getApproved(uint256 tokenId) public view virtual override returns (address) {
require(_exists(tokenId), "ERC721: approved query for nonexistent token");
return _tokenApprovals[tokenId];
}
/**
* @dev See {IERC721-setApprovalForAll}.
*/
function setApprovalForAll(address operator, bool approved) public virtual override {
require(operator != _msgSender(), "ERC721: approve to caller");
_operatorApprovals[_msgSender()][operator] = approved;
emit ApprovalForAll(_msgSender(), operator, approved);
}
/**
* @dev See {IERC721-isApprovedForAll}.
*/
function isApprovedForAll(address owner, address operator) public view virtual override returns (bool) {
return _operatorApprovals[owner][operator];
}
/**
* @dev See {IERC721-transferFrom}.
*/
function transferFrom(
address from,
address to,
uint256 tokenId
) public virtual override {
//solhint-disable-next-line max-line-length
require(_isApprovedOrOwner(_msgSender(), tokenId), "ERC721: transfer caller is not owner nor approved");
_transfer(from, to, tokenId);
}
/**
* @dev See {IERC721-safeTransferFrom}.
*/
function safeTransferFrom(
address from,
address to,
uint256 tokenId
) public virtual override {
safeTransferFrom(from, to, tokenId, "");
}
/**
* @dev See {IERC721-safeTransferFrom}.
*/
function safeTransferFrom(
address from,
address to,
uint256 tokenId,
bytes memory _data
) public virtual override {
require(_isApprovedOrOwner(_msgSender(), tokenId), "ERC721: transfer caller is not owner nor approved");
_safeTransfer(from, to, tokenId, _data);
}
function _safeTransfer(
address from,
address to,
uint256 tokenId,
bytes memory _data
) internal virtual {
_transfer(from, to, tokenId);
require(_checkOnERC721Received(from, to, tokenId, _data), "ERC721: transfer to non ERC721Receiver implementer");
}
function _exists(uint256 tokenId) internal view virtual returns (bool) {
return _owners[tokenId] != address(0);
}
function _isApprovedOrOwner(address spender, uint256 tokenId) internal view virtual returns (bool) {
require(_exists(tokenId), "ERC721: operator query for nonexistent token");
address owner = ERC721.ownerOf(tokenId);
return (spender == owner || getApproved(tokenId) == spender || isApprovedForAll(owner, spender));
}
function _safeMint(address to, uint256 tokenId) internal virtual {
_safeMint(to, tokenId, "");
}
function _safeMint(
address to,
uint256 tokenId,
bytes memory _data
) internal virtual {
_mint(to, tokenId);
require(
_checkOnERC721Received(address(0), to, tokenId, _data),
"ERC721: transfer to non ERC721Receiver implementer"
);
}
function _mint(address to, uint256 tokenId) internal virtual {
require(to != address(0), "ERC721: mint to the zero address");
require(!_exists(tokenId), "ERC721: token already minted");
_beforeTokenTransfer(address(0), to, tokenId);
_balances[to] += 1;
_owners[tokenId] = to;
emit Transfer(address(0), to, tokenId);
}
function _burn(uint256 tokenId) internal virtual {
address owner = ERC721.ownerOf(tokenId);
_beforeTokenTransfer(owner, address(0), tokenId);
// Clear approvals
_approve(address(0), tokenId);
_balances[owner] -= 1;
delete _owners[tokenId];
emit Transfer(owner, address(0), tokenId);
}
function _transfer(
address from,
address to,
uint256 tokenId
) internal virtual {
require(ERC721.ownerOf(tokenId) == from, "ERC721: transfer of token that is not own");
require(to != address(0), "ERC721: transfer to the zero address");
_beforeTokenTransfer(from, to, tokenId);
// Clear approvals from the previous owner
_approve(address(0), tokenId);
_balances[from] -= 1;
_balances[to] += 1;
_owners[tokenId] = to;
emit Transfer(from, to, tokenId);
}
/**
* @dev Approve `to` to operate on `tokenId`
*
* Emits a {Approval} event.
*/
function _approve(address to, uint256 tokenId) internal virtual {
_tokenApprovals[tokenId] = to;
emit Approval(ERC721.ownerOf(tokenId), to, tokenId);
}
function _checkOnERC721Received(
address from,
address to,
uint256 tokenId,
bytes memory _data
) private returns (bool) {
if (to.isContract()) {
try IERC721Receiver(to).onERC721Received(_msgSender(), from, tokenId, _data) returns (bytes4 retval) {
return retval == IERC721Receiver.onERC721Received.selector;
} catch (bytes memory reason) {
if (reason.length == 0) {
revert("ERC721: transfer to non ERC721Receiver implementer");
} else {
assembly {
revert(add(32, reason), mload(reason))
}
}
}
} else {
return true;
}
}
function _beforeTokenTransfer(
address from,
address to,
uint256 tokenId
) internal virtual {}
} | ownerOf | function ownerOf(uint256 tokenId) public view virtual override returns (address) {
address owner = _owners[tokenId];
require(owner != address(0), "ERC721: owner query for nonexistent token");
return owner;
}
| /**
* @dev See {IERC721-ownerOf}.
*/ | NatSpecMultiLine | v0.8.7+commit.e28d00a7 | MIT | ipfs://ec30ad3b2c7be55c484ddb84aa17c0c44a22d432c6fab023a60ec5e2d7d4b3de | {
"func_code_index": [
1610,
1854
]
} | 8,610 |
||
LinguaFranca | @openzeppelin/contracts/token/ERC721/ERC721.sol | 0x9a7a5ff2c9563e96fbbed4dda94d5549b30f1efb | Solidity | ERC721 | contract ERC721 is Context, ERC165, IERC721, IERC721Metadata {
using Address for address;
using Strings for uint256;
// Token name
string private _name;
// Token symbol
string private _symbol;
// Mapping from token ID to owner address
mapping(uint256 => address) private _owners;
// Mapping owner address to token count
mapping(address => uint256) private _balances;
// Mapping from token ID to approved address
mapping(uint256 => address) private _tokenApprovals;
// Mapping from owner to operator approvals
mapping(address => mapping(address => bool)) private _operatorApprovals;
/**
* @dev Initializes the contract by setting a `name` and a `symbol` to the token collection.
*/
constructor(string memory name_, string memory symbol_) {
_name = name_;
_symbol = symbol_;
}
/**
* @dev See {IERC165-supportsInterface}.
*/
function supportsInterface(bytes4 interfaceId) public view virtual override(ERC165, IERC165) returns (bool) {
return
interfaceId == type(IERC721).interfaceId ||
interfaceId == type(IERC721Metadata).interfaceId ||
super.supportsInterface(interfaceId);
}
/**
* @dev See {IERC721-balanceOf}.
*/
function balanceOf(address owner) public view virtual override returns (uint256) {
require(owner != address(0), "ERC721: balance query for the zero address");
return _balances[owner];
}
/**
* @dev See {IERC721-ownerOf}.
*/
function ownerOf(uint256 tokenId) public view virtual override returns (address) {
address owner = _owners[tokenId];
require(owner != address(0), "ERC721: owner query for nonexistent token");
return owner;
}
/**
* @dev See {IERC721Metadata-name}.
*/
function name() public view virtual override returns (string memory) {
return _name;
}
/**
* @dev See {IERC721Metadata-symbol}.
*/
function symbol() public view virtual override returns (string memory) {
return _symbol;
}
/**
* @dev See {IERC721Metadata-tokenURI}.
*/
function tokenURI(uint256 tokenId) public view virtual override returns (string memory) {
require(_exists(tokenId), "ERC721Metadata: URI query for nonexistent token");
string memory baseURI = _baseURI();
return bytes(baseURI).length > 0 ? string(abi.encodePacked(baseURI, tokenId.toString())) : "";
}
/**
* @dev Base URI for computing {tokenURI}. If set, the resulting URI for each
* token will be the concatenation of the `baseURI` and the `tokenId`. Empty
* by default, can be overriden in child contracts.
*/
function _baseURI() internal view virtual returns (string memory) {
return "";
}
/**
* @dev See {IERC721-approve}.
*/
function approve(address to, uint256 tokenId) public virtual override {
address owner = ERC721.ownerOf(tokenId);
require(to != owner, "ERC721: approval to current owner");
require(
_msgSender() == owner || isApprovedForAll(owner, _msgSender()),
"ERC721: approve caller is not owner nor approved for all"
);
_approve(to, tokenId);
}
/**
* @dev See {IERC721-getApproved}.
*/
function getApproved(uint256 tokenId) public view virtual override returns (address) {
require(_exists(tokenId), "ERC721: approved query for nonexistent token");
return _tokenApprovals[tokenId];
}
/**
* @dev See {IERC721-setApprovalForAll}.
*/
function setApprovalForAll(address operator, bool approved) public virtual override {
require(operator != _msgSender(), "ERC721: approve to caller");
_operatorApprovals[_msgSender()][operator] = approved;
emit ApprovalForAll(_msgSender(), operator, approved);
}
/**
* @dev See {IERC721-isApprovedForAll}.
*/
function isApprovedForAll(address owner, address operator) public view virtual override returns (bool) {
return _operatorApprovals[owner][operator];
}
/**
* @dev See {IERC721-transferFrom}.
*/
function transferFrom(
address from,
address to,
uint256 tokenId
) public virtual override {
//solhint-disable-next-line max-line-length
require(_isApprovedOrOwner(_msgSender(), tokenId), "ERC721: transfer caller is not owner nor approved");
_transfer(from, to, tokenId);
}
/**
* @dev See {IERC721-safeTransferFrom}.
*/
function safeTransferFrom(
address from,
address to,
uint256 tokenId
) public virtual override {
safeTransferFrom(from, to, tokenId, "");
}
/**
* @dev See {IERC721-safeTransferFrom}.
*/
function safeTransferFrom(
address from,
address to,
uint256 tokenId,
bytes memory _data
) public virtual override {
require(_isApprovedOrOwner(_msgSender(), tokenId), "ERC721: transfer caller is not owner nor approved");
_safeTransfer(from, to, tokenId, _data);
}
function _safeTransfer(
address from,
address to,
uint256 tokenId,
bytes memory _data
) internal virtual {
_transfer(from, to, tokenId);
require(_checkOnERC721Received(from, to, tokenId, _data), "ERC721: transfer to non ERC721Receiver implementer");
}
function _exists(uint256 tokenId) internal view virtual returns (bool) {
return _owners[tokenId] != address(0);
}
function _isApprovedOrOwner(address spender, uint256 tokenId) internal view virtual returns (bool) {
require(_exists(tokenId), "ERC721: operator query for nonexistent token");
address owner = ERC721.ownerOf(tokenId);
return (spender == owner || getApproved(tokenId) == spender || isApprovedForAll(owner, spender));
}
function _safeMint(address to, uint256 tokenId) internal virtual {
_safeMint(to, tokenId, "");
}
function _safeMint(
address to,
uint256 tokenId,
bytes memory _data
) internal virtual {
_mint(to, tokenId);
require(
_checkOnERC721Received(address(0), to, tokenId, _data),
"ERC721: transfer to non ERC721Receiver implementer"
);
}
function _mint(address to, uint256 tokenId) internal virtual {
require(to != address(0), "ERC721: mint to the zero address");
require(!_exists(tokenId), "ERC721: token already minted");
_beforeTokenTransfer(address(0), to, tokenId);
_balances[to] += 1;
_owners[tokenId] = to;
emit Transfer(address(0), to, tokenId);
}
function _burn(uint256 tokenId) internal virtual {
address owner = ERC721.ownerOf(tokenId);
_beforeTokenTransfer(owner, address(0), tokenId);
// Clear approvals
_approve(address(0), tokenId);
_balances[owner] -= 1;
delete _owners[tokenId];
emit Transfer(owner, address(0), tokenId);
}
function _transfer(
address from,
address to,
uint256 tokenId
) internal virtual {
require(ERC721.ownerOf(tokenId) == from, "ERC721: transfer of token that is not own");
require(to != address(0), "ERC721: transfer to the zero address");
_beforeTokenTransfer(from, to, tokenId);
// Clear approvals from the previous owner
_approve(address(0), tokenId);
_balances[from] -= 1;
_balances[to] += 1;
_owners[tokenId] = to;
emit Transfer(from, to, tokenId);
}
/**
* @dev Approve `to` to operate on `tokenId`
*
* Emits a {Approval} event.
*/
function _approve(address to, uint256 tokenId) internal virtual {
_tokenApprovals[tokenId] = to;
emit Approval(ERC721.ownerOf(tokenId), to, tokenId);
}
function _checkOnERC721Received(
address from,
address to,
uint256 tokenId,
bytes memory _data
) private returns (bool) {
if (to.isContract()) {
try IERC721Receiver(to).onERC721Received(_msgSender(), from, tokenId, _data) returns (bytes4 retval) {
return retval == IERC721Receiver.onERC721Received.selector;
} catch (bytes memory reason) {
if (reason.length == 0) {
revert("ERC721: transfer to non ERC721Receiver implementer");
} else {
assembly {
revert(add(32, reason), mload(reason))
}
}
}
} else {
return true;
}
}
function _beforeTokenTransfer(
address from,
address to,
uint256 tokenId
) internal virtual {}
} | name | function name() public view virtual override returns (string memory) {
return _name;
}
| /**
* @dev See {IERC721Metadata-name}.
*/ | NatSpecMultiLine | v0.8.7+commit.e28d00a7 | MIT | ipfs://ec30ad3b2c7be55c484ddb84aa17c0c44a22d432c6fab023a60ec5e2d7d4b3de | {
"func_code_index": [
1916,
2021
]
} | 8,611 |
||
LinguaFranca | @openzeppelin/contracts/token/ERC721/ERC721.sol | 0x9a7a5ff2c9563e96fbbed4dda94d5549b30f1efb | Solidity | ERC721 | contract ERC721 is Context, ERC165, IERC721, IERC721Metadata {
using Address for address;
using Strings for uint256;
// Token name
string private _name;
// Token symbol
string private _symbol;
// Mapping from token ID to owner address
mapping(uint256 => address) private _owners;
// Mapping owner address to token count
mapping(address => uint256) private _balances;
// Mapping from token ID to approved address
mapping(uint256 => address) private _tokenApprovals;
// Mapping from owner to operator approvals
mapping(address => mapping(address => bool)) private _operatorApprovals;
/**
* @dev Initializes the contract by setting a `name` and a `symbol` to the token collection.
*/
constructor(string memory name_, string memory symbol_) {
_name = name_;
_symbol = symbol_;
}
/**
* @dev See {IERC165-supportsInterface}.
*/
function supportsInterface(bytes4 interfaceId) public view virtual override(ERC165, IERC165) returns (bool) {
return
interfaceId == type(IERC721).interfaceId ||
interfaceId == type(IERC721Metadata).interfaceId ||
super.supportsInterface(interfaceId);
}
/**
* @dev See {IERC721-balanceOf}.
*/
function balanceOf(address owner) public view virtual override returns (uint256) {
require(owner != address(0), "ERC721: balance query for the zero address");
return _balances[owner];
}
/**
* @dev See {IERC721-ownerOf}.
*/
function ownerOf(uint256 tokenId) public view virtual override returns (address) {
address owner = _owners[tokenId];
require(owner != address(0), "ERC721: owner query for nonexistent token");
return owner;
}
/**
* @dev See {IERC721Metadata-name}.
*/
function name() public view virtual override returns (string memory) {
return _name;
}
/**
* @dev See {IERC721Metadata-symbol}.
*/
function symbol() public view virtual override returns (string memory) {
return _symbol;
}
/**
* @dev See {IERC721Metadata-tokenURI}.
*/
function tokenURI(uint256 tokenId) public view virtual override returns (string memory) {
require(_exists(tokenId), "ERC721Metadata: URI query for nonexistent token");
string memory baseURI = _baseURI();
return bytes(baseURI).length > 0 ? string(abi.encodePacked(baseURI, tokenId.toString())) : "";
}
/**
* @dev Base URI for computing {tokenURI}. If set, the resulting URI for each
* token will be the concatenation of the `baseURI` and the `tokenId`. Empty
* by default, can be overriden in child contracts.
*/
function _baseURI() internal view virtual returns (string memory) {
return "";
}
/**
* @dev See {IERC721-approve}.
*/
function approve(address to, uint256 tokenId) public virtual override {
address owner = ERC721.ownerOf(tokenId);
require(to != owner, "ERC721: approval to current owner");
require(
_msgSender() == owner || isApprovedForAll(owner, _msgSender()),
"ERC721: approve caller is not owner nor approved for all"
);
_approve(to, tokenId);
}
/**
* @dev See {IERC721-getApproved}.
*/
function getApproved(uint256 tokenId) public view virtual override returns (address) {
require(_exists(tokenId), "ERC721: approved query for nonexistent token");
return _tokenApprovals[tokenId];
}
/**
* @dev See {IERC721-setApprovalForAll}.
*/
function setApprovalForAll(address operator, bool approved) public virtual override {
require(operator != _msgSender(), "ERC721: approve to caller");
_operatorApprovals[_msgSender()][operator] = approved;
emit ApprovalForAll(_msgSender(), operator, approved);
}
/**
* @dev See {IERC721-isApprovedForAll}.
*/
function isApprovedForAll(address owner, address operator) public view virtual override returns (bool) {
return _operatorApprovals[owner][operator];
}
/**
* @dev See {IERC721-transferFrom}.
*/
function transferFrom(
address from,
address to,
uint256 tokenId
) public virtual override {
//solhint-disable-next-line max-line-length
require(_isApprovedOrOwner(_msgSender(), tokenId), "ERC721: transfer caller is not owner nor approved");
_transfer(from, to, tokenId);
}
/**
* @dev See {IERC721-safeTransferFrom}.
*/
function safeTransferFrom(
address from,
address to,
uint256 tokenId
) public virtual override {
safeTransferFrom(from, to, tokenId, "");
}
/**
* @dev See {IERC721-safeTransferFrom}.
*/
function safeTransferFrom(
address from,
address to,
uint256 tokenId,
bytes memory _data
) public virtual override {
require(_isApprovedOrOwner(_msgSender(), tokenId), "ERC721: transfer caller is not owner nor approved");
_safeTransfer(from, to, tokenId, _data);
}
function _safeTransfer(
address from,
address to,
uint256 tokenId,
bytes memory _data
) internal virtual {
_transfer(from, to, tokenId);
require(_checkOnERC721Received(from, to, tokenId, _data), "ERC721: transfer to non ERC721Receiver implementer");
}
function _exists(uint256 tokenId) internal view virtual returns (bool) {
return _owners[tokenId] != address(0);
}
function _isApprovedOrOwner(address spender, uint256 tokenId) internal view virtual returns (bool) {
require(_exists(tokenId), "ERC721: operator query for nonexistent token");
address owner = ERC721.ownerOf(tokenId);
return (spender == owner || getApproved(tokenId) == spender || isApprovedForAll(owner, spender));
}
function _safeMint(address to, uint256 tokenId) internal virtual {
_safeMint(to, tokenId, "");
}
function _safeMint(
address to,
uint256 tokenId,
bytes memory _data
) internal virtual {
_mint(to, tokenId);
require(
_checkOnERC721Received(address(0), to, tokenId, _data),
"ERC721: transfer to non ERC721Receiver implementer"
);
}
function _mint(address to, uint256 tokenId) internal virtual {
require(to != address(0), "ERC721: mint to the zero address");
require(!_exists(tokenId), "ERC721: token already minted");
_beforeTokenTransfer(address(0), to, tokenId);
_balances[to] += 1;
_owners[tokenId] = to;
emit Transfer(address(0), to, tokenId);
}
function _burn(uint256 tokenId) internal virtual {
address owner = ERC721.ownerOf(tokenId);
_beforeTokenTransfer(owner, address(0), tokenId);
// Clear approvals
_approve(address(0), tokenId);
_balances[owner] -= 1;
delete _owners[tokenId];
emit Transfer(owner, address(0), tokenId);
}
function _transfer(
address from,
address to,
uint256 tokenId
) internal virtual {
require(ERC721.ownerOf(tokenId) == from, "ERC721: transfer of token that is not own");
require(to != address(0), "ERC721: transfer to the zero address");
_beforeTokenTransfer(from, to, tokenId);
// Clear approvals from the previous owner
_approve(address(0), tokenId);
_balances[from] -= 1;
_balances[to] += 1;
_owners[tokenId] = to;
emit Transfer(from, to, tokenId);
}
/**
* @dev Approve `to` to operate on `tokenId`
*
* Emits a {Approval} event.
*/
function _approve(address to, uint256 tokenId) internal virtual {
_tokenApprovals[tokenId] = to;
emit Approval(ERC721.ownerOf(tokenId), to, tokenId);
}
function _checkOnERC721Received(
address from,
address to,
uint256 tokenId,
bytes memory _data
) private returns (bool) {
if (to.isContract()) {
try IERC721Receiver(to).onERC721Received(_msgSender(), from, tokenId, _data) returns (bytes4 retval) {
return retval == IERC721Receiver.onERC721Received.selector;
} catch (bytes memory reason) {
if (reason.length == 0) {
revert("ERC721: transfer to non ERC721Receiver implementer");
} else {
assembly {
revert(add(32, reason), mload(reason))
}
}
}
} else {
return true;
}
}
function _beforeTokenTransfer(
address from,
address to,
uint256 tokenId
) internal virtual {}
} | symbol | function symbol() public view virtual override returns (string memory) {
return _symbol;
}
| /**
* @dev See {IERC721Metadata-symbol}.
*/ | NatSpecMultiLine | v0.8.7+commit.e28d00a7 | MIT | ipfs://ec30ad3b2c7be55c484ddb84aa17c0c44a22d432c6fab023a60ec5e2d7d4b3de | {
"func_code_index": [
2085,
2194
]
} | 8,612 |
||
LinguaFranca | @openzeppelin/contracts/token/ERC721/ERC721.sol | 0x9a7a5ff2c9563e96fbbed4dda94d5549b30f1efb | Solidity | ERC721 | contract ERC721 is Context, ERC165, IERC721, IERC721Metadata {
using Address for address;
using Strings for uint256;
// Token name
string private _name;
// Token symbol
string private _symbol;
// Mapping from token ID to owner address
mapping(uint256 => address) private _owners;
// Mapping owner address to token count
mapping(address => uint256) private _balances;
// Mapping from token ID to approved address
mapping(uint256 => address) private _tokenApprovals;
// Mapping from owner to operator approvals
mapping(address => mapping(address => bool)) private _operatorApprovals;
/**
* @dev Initializes the contract by setting a `name` and a `symbol` to the token collection.
*/
constructor(string memory name_, string memory symbol_) {
_name = name_;
_symbol = symbol_;
}
/**
* @dev See {IERC165-supportsInterface}.
*/
function supportsInterface(bytes4 interfaceId) public view virtual override(ERC165, IERC165) returns (bool) {
return
interfaceId == type(IERC721).interfaceId ||
interfaceId == type(IERC721Metadata).interfaceId ||
super.supportsInterface(interfaceId);
}
/**
* @dev See {IERC721-balanceOf}.
*/
function balanceOf(address owner) public view virtual override returns (uint256) {
require(owner != address(0), "ERC721: balance query for the zero address");
return _balances[owner];
}
/**
* @dev See {IERC721-ownerOf}.
*/
function ownerOf(uint256 tokenId) public view virtual override returns (address) {
address owner = _owners[tokenId];
require(owner != address(0), "ERC721: owner query for nonexistent token");
return owner;
}
/**
* @dev See {IERC721Metadata-name}.
*/
function name() public view virtual override returns (string memory) {
return _name;
}
/**
* @dev See {IERC721Metadata-symbol}.
*/
function symbol() public view virtual override returns (string memory) {
return _symbol;
}
/**
* @dev See {IERC721Metadata-tokenURI}.
*/
function tokenURI(uint256 tokenId) public view virtual override returns (string memory) {
require(_exists(tokenId), "ERC721Metadata: URI query for nonexistent token");
string memory baseURI = _baseURI();
return bytes(baseURI).length > 0 ? string(abi.encodePacked(baseURI, tokenId.toString())) : "";
}
/**
* @dev Base URI for computing {tokenURI}. If set, the resulting URI for each
* token will be the concatenation of the `baseURI` and the `tokenId`. Empty
* by default, can be overriden in child contracts.
*/
function _baseURI() internal view virtual returns (string memory) {
return "";
}
/**
* @dev See {IERC721-approve}.
*/
function approve(address to, uint256 tokenId) public virtual override {
address owner = ERC721.ownerOf(tokenId);
require(to != owner, "ERC721: approval to current owner");
require(
_msgSender() == owner || isApprovedForAll(owner, _msgSender()),
"ERC721: approve caller is not owner nor approved for all"
);
_approve(to, tokenId);
}
/**
* @dev See {IERC721-getApproved}.
*/
function getApproved(uint256 tokenId) public view virtual override returns (address) {
require(_exists(tokenId), "ERC721: approved query for nonexistent token");
return _tokenApprovals[tokenId];
}
/**
* @dev See {IERC721-setApprovalForAll}.
*/
function setApprovalForAll(address operator, bool approved) public virtual override {
require(operator != _msgSender(), "ERC721: approve to caller");
_operatorApprovals[_msgSender()][operator] = approved;
emit ApprovalForAll(_msgSender(), operator, approved);
}
/**
* @dev See {IERC721-isApprovedForAll}.
*/
function isApprovedForAll(address owner, address operator) public view virtual override returns (bool) {
return _operatorApprovals[owner][operator];
}
/**
* @dev See {IERC721-transferFrom}.
*/
function transferFrom(
address from,
address to,
uint256 tokenId
) public virtual override {
//solhint-disable-next-line max-line-length
require(_isApprovedOrOwner(_msgSender(), tokenId), "ERC721: transfer caller is not owner nor approved");
_transfer(from, to, tokenId);
}
/**
* @dev See {IERC721-safeTransferFrom}.
*/
function safeTransferFrom(
address from,
address to,
uint256 tokenId
) public virtual override {
safeTransferFrom(from, to, tokenId, "");
}
/**
* @dev See {IERC721-safeTransferFrom}.
*/
function safeTransferFrom(
address from,
address to,
uint256 tokenId,
bytes memory _data
) public virtual override {
require(_isApprovedOrOwner(_msgSender(), tokenId), "ERC721: transfer caller is not owner nor approved");
_safeTransfer(from, to, tokenId, _data);
}
function _safeTransfer(
address from,
address to,
uint256 tokenId,
bytes memory _data
) internal virtual {
_transfer(from, to, tokenId);
require(_checkOnERC721Received(from, to, tokenId, _data), "ERC721: transfer to non ERC721Receiver implementer");
}
function _exists(uint256 tokenId) internal view virtual returns (bool) {
return _owners[tokenId] != address(0);
}
function _isApprovedOrOwner(address spender, uint256 tokenId) internal view virtual returns (bool) {
require(_exists(tokenId), "ERC721: operator query for nonexistent token");
address owner = ERC721.ownerOf(tokenId);
return (spender == owner || getApproved(tokenId) == spender || isApprovedForAll(owner, spender));
}
function _safeMint(address to, uint256 tokenId) internal virtual {
_safeMint(to, tokenId, "");
}
function _safeMint(
address to,
uint256 tokenId,
bytes memory _data
) internal virtual {
_mint(to, tokenId);
require(
_checkOnERC721Received(address(0), to, tokenId, _data),
"ERC721: transfer to non ERC721Receiver implementer"
);
}
function _mint(address to, uint256 tokenId) internal virtual {
require(to != address(0), "ERC721: mint to the zero address");
require(!_exists(tokenId), "ERC721: token already minted");
_beforeTokenTransfer(address(0), to, tokenId);
_balances[to] += 1;
_owners[tokenId] = to;
emit Transfer(address(0), to, tokenId);
}
function _burn(uint256 tokenId) internal virtual {
address owner = ERC721.ownerOf(tokenId);
_beforeTokenTransfer(owner, address(0), tokenId);
// Clear approvals
_approve(address(0), tokenId);
_balances[owner] -= 1;
delete _owners[tokenId];
emit Transfer(owner, address(0), tokenId);
}
function _transfer(
address from,
address to,
uint256 tokenId
) internal virtual {
require(ERC721.ownerOf(tokenId) == from, "ERC721: transfer of token that is not own");
require(to != address(0), "ERC721: transfer to the zero address");
_beforeTokenTransfer(from, to, tokenId);
// Clear approvals from the previous owner
_approve(address(0), tokenId);
_balances[from] -= 1;
_balances[to] += 1;
_owners[tokenId] = to;
emit Transfer(from, to, tokenId);
}
/**
* @dev Approve `to` to operate on `tokenId`
*
* Emits a {Approval} event.
*/
function _approve(address to, uint256 tokenId) internal virtual {
_tokenApprovals[tokenId] = to;
emit Approval(ERC721.ownerOf(tokenId), to, tokenId);
}
function _checkOnERC721Received(
address from,
address to,
uint256 tokenId,
bytes memory _data
) private returns (bool) {
if (to.isContract()) {
try IERC721Receiver(to).onERC721Received(_msgSender(), from, tokenId, _data) returns (bytes4 retval) {
return retval == IERC721Receiver.onERC721Received.selector;
} catch (bytes memory reason) {
if (reason.length == 0) {
revert("ERC721: transfer to non ERC721Receiver implementer");
} else {
assembly {
revert(add(32, reason), mload(reason))
}
}
}
} else {
return true;
}
}
function _beforeTokenTransfer(
address from,
address to,
uint256 tokenId
) internal virtual {}
} | tokenURI | function tokenURI(uint256 tokenId) public view virtual override returns (string memory) {
require(_exists(tokenId), "ERC721Metadata: URI query for nonexistent token");
string memory baseURI = _baseURI();
return bytes(baseURI).length > 0 ? string(abi.encodePacked(baseURI, tokenId.toString())) : "";
}
| /**
* @dev See {IERC721Metadata-tokenURI}.
*/ | NatSpecMultiLine | v0.8.7+commit.e28d00a7 | MIT | ipfs://ec30ad3b2c7be55c484ddb84aa17c0c44a22d432c6fab023a60ec5e2d7d4b3de | {
"func_code_index": [
2260,
2599
]
} | 8,613 |
||
LinguaFranca | @openzeppelin/contracts/token/ERC721/ERC721.sol | 0x9a7a5ff2c9563e96fbbed4dda94d5549b30f1efb | Solidity | ERC721 | contract ERC721 is Context, ERC165, IERC721, IERC721Metadata {
using Address for address;
using Strings for uint256;
// Token name
string private _name;
// Token symbol
string private _symbol;
// Mapping from token ID to owner address
mapping(uint256 => address) private _owners;
// Mapping owner address to token count
mapping(address => uint256) private _balances;
// Mapping from token ID to approved address
mapping(uint256 => address) private _tokenApprovals;
// Mapping from owner to operator approvals
mapping(address => mapping(address => bool)) private _operatorApprovals;
/**
* @dev Initializes the contract by setting a `name` and a `symbol` to the token collection.
*/
constructor(string memory name_, string memory symbol_) {
_name = name_;
_symbol = symbol_;
}
/**
* @dev See {IERC165-supportsInterface}.
*/
function supportsInterface(bytes4 interfaceId) public view virtual override(ERC165, IERC165) returns (bool) {
return
interfaceId == type(IERC721).interfaceId ||
interfaceId == type(IERC721Metadata).interfaceId ||
super.supportsInterface(interfaceId);
}
/**
* @dev See {IERC721-balanceOf}.
*/
function balanceOf(address owner) public view virtual override returns (uint256) {
require(owner != address(0), "ERC721: balance query for the zero address");
return _balances[owner];
}
/**
* @dev See {IERC721-ownerOf}.
*/
function ownerOf(uint256 tokenId) public view virtual override returns (address) {
address owner = _owners[tokenId];
require(owner != address(0), "ERC721: owner query for nonexistent token");
return owner;
}
/**
* @dev See {IERC721Metadata-name}.
*/
function name() public view virtual override returns (string memory) {
return _name;
}
/**
* @dev See {IERC721Metadata-symbol}.
*/
function symbol() public view virtual override returns (string memory) {
return _symbol;
}
/**
* @dev See {IERC721Metadata-tokenURI}.
*/
function tokenURI(uint256 tokenId) public view virtual override returns (string memory) {
require(_exists(tokenId), "ERC721Metadata: URI query for nonexistent token");
string memory baseURI = _baseURI();
return bytes(baseURI).length > 0 ? string(abi.encodePacked(baseURI, tokenId.toString())) : "";
}
/**
* @dev Base URI for computing {tokenURI}. If set, the resulting URI for each
* token will be the concatenation of the `baseURI` and the `tokenId`. Empty
* by default, can be overriden in child contracts.
*/
function _baseURI() internal view virtual returns (string memory) {
return "";
}
/**
* @dev See {IERC721-approve}.
*/
function approve(address to, uint256 tokenId) public virtual override {
address owner = ERC721.ownerOf(tokenId);
require(to != owner, "ERC721: approval to current owner");
require(
_msgSender() == owner || isApprovedForAll(owner, _msgSender()),
"ERC721: approve caller is not owner nor approved for all"
);
_approve(to, tokenId);
}
/**
* @dev See {IERC721-getApproved}.
*/
function getApproved(uint256 tokenId) public view virtual override returns (address) {
require(_exists(tokenId), "ERC721: approved query for nonexistent token");
return _tokenApprovals[tokenId];
}
/**
* @dev See {IERC721-setApprovalForAll}.
*/
function setApprovalForAll(address operator, bool approved) public virtual override {
require(operator != _msgSender(), "ERC721: approve to caller");
_operatorApprovals[_msgSender()][operator] = approved;
emit ApprovalForAll(_msgSender(), operator, approved);
}
/**
* @dev See {IERC721-isApprovedForAll}.
*/
function isApprovedForAll(address owner, address operator) public view virtual override returns (bool) {
return _operatorApprovals[owner][operator];
}
/**
* @dev See {IERC721-transferFrom}.
*/
function transferFrom(
address from,
address to,
uint256 tokenId
) public virtual override {
//solhint-disable-next-line max-line-length
require(_isApprovedOrOwner(_msgSender(), tokenId), "ERC721: transfer caller is not owner nor approved");
_transfer(from, to, tokenId);
}
/**
* @dev See {IERC721-safeTransferFrom}.
*/
function safeTransferFrom(
address from,
address to,
uint256 tokenId
) public virtual override {
safeTransferFrom(from, to, tokenId, "");
}
/**
* @dev See {IERC721-safeTransferFrom}.
*/
function safeTransferFrom(
address from,
address to,
uint256 tokenId,
bytes memory _data
) public virtual override {
require(_isApprovedOrOwner(_msgSender(), tokenId), "ERC721: transfer caller is not owner nor approved");
_safeTransfer(from, to, tokenId, _data);
}
function _safeTransfer(
address from,
address to,
uint256 tokenId,
bytes memory _data
) internal virtual {
_transfer(from, to, tokenId);
require(_checkOnERC721Received(from, to, tokenId, _data), "ERC721: transfer to non ERC721Receiver implementer");
}
function _exists(uint256 tokenId) internal view virtual returns (bool) {
return _owners[tokenId] != address(0);
}
function _isApprovedOrOwner(address spender, uint256 tokenId) internal view virtual returns (bool) {
require(_exists(tokenId), "ERC721: operator query for nonexistent token");
address owner = ERC721.ownerOf(tokenId);
return (spender == owner || getApproved(tokenId) == spender || isApprovedForAll(owner, spender));
}
function _safeMint(address to, uint256 tokenId) internal virtual {
_safeMint(to, tokenId, "");
}
function _safeMint(
address to,
uint256 tokenId,
bytes memory _data
) internal virtual {
_mint(to, tokenId);
require(
_checkOnERC721Received(address(0), to, tokenId, _data),
"ERC721: transfer to non ERC721Receiver implementer"
);
}
function _mint(address to, uint256 tokenId) internal virtual {
require(to != address(0), "ERC721: mint to the zero address");
require(!_exists(tokenId), "ERC721: token already minted");
_beforeTokenTransfer(address(0), to, tokenId);
_balances[to] += 1;
_owners[tokenId] = to;
emit Transfer(address(0), to, tokenId);
}
function _burn(uint256 tokenId) internal virtual {
address owner = ERC721.ownerOf(tokenId);
_beforeTokenTransfer(owner, address(0), tokenId);
// Clear approvals
_approve(address(0), tokenId);
_balances[owner] -= 1;
delete _owners[tokenId];
emit Transfer(owner, address(0), tokenId);
}
function _transfer(
address from,
address to,
uint256 tokenId
) internal virtual {
require(ERC721.ownerOf(tokenId) == from, "ERC721: transfer of token that is not own");
require(to != address(0), "ERC721: transfer to the zero address");
_beforeTokenTransfer(from, to, tokenId);
// Clear approvals from the previous owner
_approve(address(0), tokenId);
_balances[from] -= 1;
_balances[to] += 1;
_owners[tokenId] = to;
emit Transfer(from, to, tokenId);
}
/**
* @dev Approve `to` to operate on `tokenId`
*
* Emits a {Approval} event.
*/
function _approve(address to, uint256 tokenId) internal virtual {
_tokenApprovals[tokenId] = to;
emit Approval(ERC721.ownerOf(tokenId), to, tokenId);
}
function _checkOnERC721Received(
address from,
address to,
uint256 tokenId,
bytes memory _data
) private returns (bool) {
if (to.isContract()) {
try IERC721Receiver(to).onERC721Received(_msgSender(), from, tokenId, _data) returns (bytes4 retval) {
return retval == IERC721Receiver.onERC721Received.selector;
} catch (bytes memory reason) {
if (reason.length == 0) {
revert("ERC721: transfer to non ERC721Receiver implementer");
} else {
assembly {
revert(add(32, reason), mload(reason))
}
}
}
} else {
return true;
}
}
function _beforeTokenTransfer(
address from,
address to,
uint256 tokenId
) internal virtual {}
} | _baseURI | function _baseURI() internal view virtual returns (string memory) {
return "";
}
| /**
* @dev Base URI for computing {tokenURI}. If set, the resulting URI for each
* token will be the concatenation of the `baseURI` and the `tokenId`. Empty
* by default, can be overriden in child contracts.
*/ | NatSpecMultiLine | v0.8.7+commit.e28d00a7 | MIT | ipfs://ec30ad3b2c7be55c484ddb84aa17c0c44a22d432c6fab023a60ec5e2d7d4b3de | {
"func_code_index": [
2842,
2941
]
} | 8,614 |
||
LinguaFranca | @openzeppelin/contracts/token/ERC721/ERC721.sol | 0x9a7a5ff2c9563e96fbbed4dda94d5549b30f1efb | Solidity | ERC721 | contract ERC721 is Context, ERC165, IERC721, IERC721Metadata {
using Address for address;
using Strings for uint256;
// Token name
string private _name;
// Token symbol
string private _symbol;
// Mapping from token ID to owner address
mapping(uint256 => address) private _owners;
// Mapping owner address to token count
mapping(address => uint256) private _balances;
// Mapping from token ID to approved address
mapping(uint256 => address) private _tokenApprovals;
// Mapping from owner to operator approvals
mapping(address => mapping(address => bool)) private _operatorApprovals;
/**
* @dev Initializes the contract by setting a `name` and a `symbol` to the token collection.
*/
constructor(string memory name_, string memory symbol_) {
_name = name_;
_symbol = symbol_;
}
/**
* @dev See {IERC165-supportsInterface}.
*/
function supportsInterface(bytes4 interfaceId) public view virtual override(ERC165, IERC165) returns (bool) {
return
interfaceId == type(IERC721).interfaceId ||
interfaceId == type(IERC721Metadata).interfaceId ||
super.supportsInterface(interfaceId);
}
/**
* @dev See {IERC721-balanceOf}.
*/
function balanceOf(address owner) public view virtual override returns (uint256) {
require(owner != address(0), "ERC721: balance query for the zero address");
return _balances[owner];
}
/**
* @dev See {IERC721-ownerOf}.
*/
function ownerOf(uint256 tokenId) public view virtual override returns (address) {
address owner = _owners[tokenId];
require(owner != address(0), "ERC721: owner query for nonexistent token");
return owner;
}
/**
* @dev See {IERC721Metadata-name}.
*/
function name() public view virtual override returns (string memory) {
return _name;
}
/**
* @dev See {IERC721Metadata-symbol}.
*/
function symbol() public view virtual override returns (string memory) {
return _symbol;
}
/**
* @dev See {IERC721Metadata-tokenURI}.
*/
function tokenURI(uint256 tokenId) public view virtual override returns (string memory) {
require(_exists(tokenId), "ERC721Metadata: URI query for nonexistent token");
string memory baseURI = _baseURI();
return bytes(baseURI).length > 0 ? string(abi.encodePacked(baseURI, tokenId.toString())) : "";
}
/**
* @dev Base URI for computing {tokenURI}. If set, the resulting URI for each
* token will be the concatenation of the `baseURI` and the `tokenId`. Empty
* by default, can be overriden in child contracts.
*/
function _baseURI() internal view virtual returns (string memory) {
return "";
}
/**
* @dev See {IERC721-approve}.
*/
function approve(address to, uint256 tokenId) public virtual override {
address owner = ERC721.ownerOf(tokenId);
require(to != owner, "ERC721: approval to current owner");
require(
_msgSender() == owner || isApprovedForAll(owner, _msgSender()),
"ERC721: approve caller is not owner nor approved for all"
);
_approve(to, tokenId);
}
/**
* @dev See {IERC721-getApproved}.
*/
function getApproved(uint256 tokenId) public view virtual override returns (address) {
require(_exists(tokenId), "ERC721: approved query for nonexistent token");
return _tokenApprovals[tokenId];
}
/**
* @dev See {IERC721-setApprovalForAll}.
*/
function setApprovalForAll(address operator, bool approved) public virtual override {
require(operator != _msgSender(), "ERC721: approve to caller");
_operatorApprovals[_msgSender()][operator] = approved;
emit ApprovalForAll(_msgSender(), operator, approved);
}
/**
* @dev See {IERC721-isApprovedForAll}.
*/
function isApprovedForAll(address owner, address operator) public view virtual override returns (bool) {
return _operatorApprovals[owner][operator];
}
/**
* @dev See {IERC721-transferFrom}.
*/
function transferFrom(
address from,
address to,
uint256 tokenId
) public virtual override {
//solhint-disable-next-line max-line-length
require(_isApprovedOrOwner(_msgSender(), tokenId), "ERC721: transfer caller is not owner nor approved");
_transfer(from, to, tokenId);
}
/**
* @dev See {IERC721-safeTransferFrom}.
*/
function safeTransferFrom(
address from,
address to,
uint256 tokenId
) public virtual override {
safeTransferFrom(from, to, tokenId, "");
}
/**
* @dev See {IERC721-safeTransferFrom}.
*/
function safeTransferFrom(
address from,
address to,
uint256 tokenId,
bytes memory _data
) public virtual override {
require(_isApprovedOrOwner(_msgSender(), tokenId), "ERC721: transfer caller is not owner nor approved");
_safeTransfer(from, to, tokenId, _data);
}
function _safeTransfer(
address from,
address to,
uint256 tokenId,
bytes memory _data
) internal virtual {
_transfer(from, to, tokenId);
require(_checkOnERC721Received(from, to, tokenId, _data), "ERC721: transfer to non ERC721Receiver implementer");
}
function _exists(uint256 tokenId) internal view virtual returns (bool) {
return _owners[tokenId] != address(0);
}
function _isApprovedOrOwner(address spender, uint256 tokenId) internal view virtual returns (bool) {
require(_exists(tokenId), "ERC721: operator query for nonexistent token");
address owner = ERC721.ownerOf(tokenId);
return (spender == owner || getApproved(tokenId) == spender || isApprovedForAll(owner, spender));
}
function _safeMint(address to, uint256 tokenId) internal virtual {
_safeMint(to, tokenId, "");
}
function _safeMint(
address to,
uint256 tokenId,
bytes memory _data
) internal virtual {
_mint(to, tokenId);
require(
_checkOnERC721Received(address(0), to, tokenId, _data),
"ERC721: transfer to non ERC721Receiver implementer"
);
}
function _mint(address to, uint256 tokenId) internal virtual {
require(to != address(0), "ERC721: mint to the zero address");
require(!_exists(tokenId), "ERC721: token already minted");
_beforeTokenTransfer(address(0), to, tokenId);
_balances[to] += 1;
_owners[tokenId] = to;
emit Transfer(address(0), to, tokenId);
}
function _burn(uint256 tokenId) internal virtual {
address owner = ERC721.ownerOf(tokenId);
_beforeTokenTransfer(owner, address(0), tokenId);
// Clear approvals
_approve(address(0), tokenId);
_balances[owner] -= 1;
delete _owners[tokenId];
emit Transfer(owner, address(0), tokenId);
}
function _transfer(
address from,
address to,
uint256 tokenId
) internal virtual {
require(ERC721.ownerOf(tokenId) == from, "ERC721: transfer of token that is not own");
require(to != address(0), "ERC721: transfer to the zero address");
_beforeTokenTransfer(from, to, tokenId);
// Clear approvals from the previous owner
_approve(address(0), tokenId);
_balances[from] -= 1;
_balances[to] += 1;
_owners[tokenId] = to;
emit Transfer(from, to, tokenId);
}
/**
* @dev Approve `to` to operate on `tokenId`
*
* Emits a {Approval} event.
*/
function _approve(address to, uint256 tokenId) internal virtual {
_tokenApprovals[tokenId] = to;
emit Approval(ERC721.ownerOf(tokenId), to, tokenId);
}
function _checkOnERC721Received(
address from,
address to,
uint256 tokenId,
bytes memory _data
) private returns (bool) {
if (to.isContract()) {
try IERC721Receiver(to).onERC721Received(_msgSender(), from, tokenId, _data) returns (bytes4 retval) {
return retval == IERC721Receiver.onERC721Received.selector;
} catch (bytes memory reason) {
if (reason.length == 0) {
revert("ERC721: transfer to non ERC721Receiver implementer");
} else {
assembly {
revert(add(32, reason), mload(reason))
}
}
}
} else {
return true;
}
}
function _beforeTokenTransfer(
address from,
address to,
uint256 tokenId
) internal virtual {}
} | approve | function approve(address to, uint256 tokenId) public virtual override {
address owner = ERC721.ownerOf(tokenId);
require(to != owner, "ERC721: approval to current owner");
require(
_msgSender() == owner || isApprovedForAll(owner, _msgSender()),
"ERC721: approve caller is not owner nor approved for all"
);
_approve(to, tokenId);
}
| /**
* @dev See {IERC721-approve}.
*/ | NatSpecMultiLine | v0.8.7+commit.e28d00a7 | MIT | ipfs://ec30ad3b2c7be55c484ddb84aa17c0c44a22d432c6fab023a60ec5e2d7d4b3de | {
"func_code_index": [
2998,
3414
]
} | 8,615 |
||
LinguaFranca | @openzeppelin/contracts/token/ERC721/ERC721.sol | 0x9a7a5ff2c9563e96fbbed4dda94d5549b30f1efb | Solidity | ERC721 | contract ERC721 is Context, ERC165, IERC721, IERC721Metadata {
using Address for address;
using Strings for uint256;
// Token name
string private _name;
// Token symbol
string private _symbol;
// Mapping from token ID to owner address
mapping(uint256 => address) private _owners;
// Mapping owner address to token count
mapping(address => uint256) private _balances;
// Mapping from token ID to approved address
mapping(uint256 => address) private _tokenApprovals;
// Mapping from owner to operator approvals
mapping(address => mapping(address => bool)) private _operatorApprovals;
/**
* @dev Initializes the contract by setting a `name` and a `symbol` to the token collection.
*/
constructor(string memory name_, string memory symbol_) {
_name = name_;
_symbol = symbol_;
}
/**
* @dev See {IERC165-supportsInterface}.
*/
function supportsInterface(bytes4 interfaceId) public view virtual override(ERC165, IERC165) returns (bool) {
return
interfaceId == type(IERC721).interfaceId ||
interfaceId == type(IERC721Metadata).interfaceId ||
super.supportsInterface(interfaceId);
}
/**
* @dev See {IERC721-balanceOf}.
*/
function balanceOf(address owner) public view virtual override returns (uint256) {
require(owner != address(0), "ERC721: balance query for the zero address");
return _balances[owner];
}
/**
* @dev See {IERC721-ownerOf}.
*/
function ownerOf(uint256 tokenId) public view virtual override returns (address) {
address owner = _owners[tokenId];
require(owner != address(0), "ERC721: owner query for nonexistent token");
return owner;
}
/**
* @dev See {IERC721Metadata-name}.
*/
function name() public view virtual override returns (string memory) {
return _name;
}
/**
* @dev See {IERC721Metadata-symbol}.
*/
function symbol() public view virtual override returns (string memory) {
return _symbol;
}
/**
* @dev See {IERC721Metadata-tokenURI}.
*/
function tokenURI(uint256 tokenId) public view virtual override returns (string memory) {
require(_exists(tokenId), "ERC721Metadata: URI query for nonexistent token");
string memory baseURI = _baseURI();
return bytes(baseURI).length > 0 ? string(abi.encodePacked(baseURI, tokenId.toString())) : "";
}
/**
* @dev Base URI for computing {tokenURI}. If set, the resulting URI for each
* token will be the concatenation of the `baseURI` and the `tokenId`. Empty
* by default, can be overriden in child contracts.
*/
function _baseURI() internal view virtual returns (string memory) {
return "";
}
/**
* @dev See {IERC721-approve}.
*/
function approve(address to, uint256 tokenId) public virtual override {
address owner = ERC721.ownerOf(tokenId);
require(to != owner, "ERC721: approval to current owner");
require(
_msgSender() == owner || isApprovedForAll(owner, _msgSender()),
"ERC721: approve caller is not owner nor approved for all"
);
_approve(to, tokenId);
}
/**
* @dev See {IERC721-getApproved}.
*/
function getApproved(uint256 tokenId) public view virtual override returns (address) {
require(_exists(tokenId), "ERC721: approved query for nonexistent token");
return _tokenApprovals[tokenId];
}
/**
* @dev See {IERC721-setApprovalForAll}.
*/
function setApprovalForAll(address operator, bool approved) public virtual override {
require(operator != _msgSender(), "ERC721: approve to caller");
_operatorApprovals[_msgSender()][operator] = approved;
emit ApprovalForAll(_msgSender(), operator, approved);
}
/**
* @dev See {IERC721-isApprovedForAll}.
*/
function isApprovedForAll(address owner, address operator) public view virtual override returns (bool) {
return _operatorApprovals[owner][operator];
}
/**
* @dev See {IERC721-transferFrom}.
*/
function transferFrom(
address from,
address to,
uint256 tokenId
) public virtual override {
//solhint-disable-next-line max-line-length
require(_isApprovedOrOwner(_msgSender(), tokenId), "ERC721: transfer caller is not owner nor approved");
_transfer(from, to, tokenId);
}
/**
* @dev See {IERC721-safeTransferFrom}.
*/
function safeTransferFrom(
address from,
address to,
uint256 tokenId
) public virtual override {
safeTransferFrom(from, to, tokenId, "");
}
/**
* @dev See {IERC721-safeTransferFrom}.
*/
function safeTransferFrom(
address from,
address to,
uint256 tokenId,
bytes memory _data
) public virtual override {
require(_isApprovedOrOwner(_msgSender(), tokenId), "ERC721: transfer caller is not owner nor approved");
_safeTransfer(from, to, tokenId, _data);
}
function _safeTransfer(
address from,
address to,
uint256 tokenId,
bytes memory _data
) internal virtual {
_transfer(from, to, tokenId);
require(_checkOnERC721Received(from, to, tokenId, _data), "ERC721: transfer to non ERC721Receiver implementer");
}
function _exists(uint256 tokenId) internal view virtual returns (bool) {
return _owners[tokenId] != address(0);
}
function _isApprovedOrOwner(address spender, uint256 tokenId) internal view virtual returns (bool) {
require(_exists(tokenId), "ERC721: operator query for nonexistent token");
address owner = ERC721.ownerOf(tokenId);
return (spender == owner || getApproved(tokenId) == spender || isApprovedForAll(owner, spender));
}
function _safeMint(address to, uint256 tokenId) internal virtual {
_safeMint(to, tokenId, "");
}
function _safeMint(
address to,
uint256 tokenId,
bytes memory _data
) internal virtual {
_mint(to, tokenId);
require(
_checkOnERC721Received(address(0), to, tokenId, _data),
"ERC721: transfer to non ERC721Receiver implementer"
);
}
function _mint(address to, uint256 tokenId) internal virtual {
require(to != address(0), "ERC721: mint to the zero address");
require(!_exists(tokenId), "ERC721: token already minted");
_beforeTokenTransfer(address(0), to, tokenId);
_balances[to] += 1;
_owners[tokenId] = to;
emit Transfer(address(0), to, tokenId);
}
function _burn(uint256 tokenId) internal virtual {
address owner = ERC721.ownerOf(tokenId);
_beforeTokenTransfer(owner, address(0), tokenId);
// Clear approvals
_approve(address(0), tokenId);
_balances[owner] -= 1;
delete _owners[tokenId];
emit Transfer(owner, address(0), tokenId);
}
function _transfer(
address from,
address to,
uint256 tokenId
) internal virtual {
require(ERC721.ownerOf(tokenId) == from, "ERC721: transfer of token that is not own");
require(to != address(0), "ERC721: transfer to the zero address");
_beforeTokenTransfer(from, to, tokenId);
// Clear approvals from the previous owner
_approve(address(0), tokenId);
_balances[from] -= 1;
_balances[to] += 1;
_owners[tokenId] = to;
emit Transfer(from, to, tokenId);
}
/**
* @dev Approve `to` to operate on `tokenId`
*
* Emits a {Approval} event.
*/
function _approve(address to, uint256 tokenId) internal virtual {
_tokenApprovals[tokenId] = to;
emit Approval(ERC721.ownerOf(tokenId), to, tokenId);
}
function _checkOnERC721Received(
address from,
address to,
uint256 tokenId,
bytes memory _data
) private returns (bool) {
if (to.isContract()) {
try IERC721Receiver(to).onERC721Received(_msgSender(), from, tokenId, _data) returns (bytes4 retval) {
return retval == IERC721Receiver.onERC721Received.selector;
} catch (bytes memory reason) {
if (reason.length == 0) {
revert("ERC721: transfer to non ERC721Receiver implementer");
} else {
assembly {
revert(add(32, reason), mload(reason))
}
}
}
} else {
return true;
}
}
function _beforeTokenTransfer(
address from,
address to,
uint256 tokenId
) internal virtual {}
} | getApproved | function getApproved(uint256 tokenId) public view virtual override returns (address) {
require(_exists(tokenId), "ERC721: approved query for nonexistent token");
return _tokenApprovals[tokenId];
}
| /**
* @dev See {IERC721-getApproved}.
*/ | NatSpecMultiLine | v0.8.7+commit.e28d00a7 | MIT | ipfs://ec30ad3b2c7be55c484ddb84aa17c0c44a22d432c6fab023a60ec5e2d7d4b3de | {
"func_code_index": [
3475,
3701
]
} | 8,616 |
||
LinguaFranca | @openzeppelin/contracts/token/ERC721/ERC721.sol | 0x9a7a5ff2c9563e96fbbed4dda94d5549b30f1efb | Solidity | ERC721 | contract ERC721 is Context, ERC165, IERC721, IERC721Metadata {
using Address for address;
using Strings for uint256;
// Token name
string private _name;
// Token symbol
string private _symbol;
// Mapping from token ID to owner address
mapping(uint256 => address) private _owners;
// Mapping owner address to token count
mapping(address => uint256) private _balances;
// Mapping from token ID to approved address
mapping(uint256 => address) private _tokenApprovals;
// Mapping from owner to operator approvals
mapping(address => mapping(address => bool)) private _operatorApprovals;
/**
* @dev Initializes the contract by setting a `name` and a `symbol` to the token collection.
*/
constructor(string memory name_, string memory symbol_) {
_name = name_;
_symbol = symbol_;
}
/**
* @dev See {IERC165-supportsInterface}.
*/
function supportsInterface(bytes4 interfaceId) public view virtual override(ERC165, IERC165) returns (bool) {
return
interfaceId == type(IERC721).interfaceId ||
interfaceId == type(IERC721Metadata).interfaceId ||
super.supportsInterface(interfaceId);
}
/**
* @dev See {IERC721-balanceOf}.
*/
function balanceOf(address owner) public view virtual override returns (uint256) {
require(owner != address(0), "ERC721: balance query for the zero address");
return _balances[owner];
}
/**
* @dev See {IERC721-ownerOf}.
*/
function ownerOf(uint256 tokenId) public view virtual override returns (address) {
address owner = _owners[tokenId];
require(owner != address(0), "ERC721: owner query for nonexistent token");
return owner;
}
/**
* @dev See {IERC721Metadata-name}.
*/
function name() public view virtual override returns (string memory) {
return _name;
}
/**
* @dev See {IERC721Metadata-symbol}.
*/
function symbol() public view virtual override returns (string memory) {
return _symbol;
}
/**
* @dev See {IERC721Metadata-tokenURI}.
*/
function tokenURI(uint256 tokenId) public view virtual override returns (string memory) {
require(_exists(tokenId), "ERC721Metadata: URI query for nonexistent token");
string memory baseURI = _baseURI();
return bytes(baseURI).length > 0 ? string(abi.encodePacked(baseURI, tokenId.toString())) : "";
}
/**
* @dev Base URI for computing {tokenURI}. If set, the resulting URI for each
* token will be the concatenation of the `baseURI` and the `tokenId`. Empty
* by default, can be overriden in child contracts.
*/
function _baseURI() internal view virtual returns (string memory) {
return "";
}
/**
* @dev See {IERC721-approve}.
*/
function approve(address to, uint256 tokenId) public virtual override {
address owner = ERC721.ownerOf(tokenId);
require(to != owner, "ERC721: approval to current owner");
require(
_msgSender() == owner || isApprovedForAll(owner, _msgSender()),
"ERC721: approve caller is not owner nor approved for all"
);
_approve(to, tokenId);
}
/**
* @dev See {IERC721-getApproved}.
*/
function getApproved(uint256 tokenId) public view virtual override returns (address) {
require(_exists(tokenId), "ERC721: approved query for nonexistent token");
return _tokenApprovals[tokenId];
}
/**
* @dev See {IERC721-setApprovalForAll}.
*/
function setApprovalForAll(address operator, bool approved) public virtual override {
require(operator != _msgSender(), "ERC721: approve to caller");
_operatorApprovals[_msgSender()][operator] = approved;
emit ApprovalForAll(_msgSender(), operator, approved);
}
/**
* @dev See {IERC721-isApprovedForAll}.
*/
function isApprovedForAll(address owner, address operator) public view virtual override returns (bool) {
return _operatorApprovals[owner][operator];
}
/**
* @dev See {IERC721-transferFrom}.
*/
function transferFrom(
address from,
address to,
uint256 tokenId
) public virtual override {
//solhint-disable-next-line max-line-length
require(_isApprovedOrOwner(_msgSender(), tokenId), "ERC721: transfer caller is not owner nor approved");
_transfer(from, to, tokenId);
}
/**
* @dev See {IERC721-safeTransferFrom}.
*/
function safeTransferFrom(
address from,
address to,
uint256 tokenId
) public virtual override {
safeTransferFrom(from, to, tokenId, "");
}
/**
* @dev See {IERC721-safeTransferFrom}.
*/
function safeTransferFrom(
address from,
address to,
uint256 tokenId,
bytes memory _data
) public virtual override {
require(_isApprovedOrOwner(_msgSender(), tokenId), "ERC721: transfer caller is not owner nor approved");
_safeTransfer(from, to, tokenId, _data);
}
function _safeTransfer(
address from,
address to,
uint256 tokenId,
bytes memory _data
) internal virtual {
_transfer(from, to, tokenId);
require(_checkOnERC721Received(from, to, tokenId, _data), "ERC721: transfer to non ERC721Receiver implementer");
}
function _exists(uint256 tokenId) internal view virtual returns (bool) {
return _owners[tokenId] != address(0);
}
function _isApprovedOrOwner(address spender, uint256 tokenId) internal view virtual returns (bool) {
require(_exists(tokenId), "ERC721: operator query for nonexistent token");
address owner = ERC721.ownerOf(tokenId);
return (spender == owner || getApproved(tokenId) == spender || isApprovedForAll(owner, spender));
}
function _safeMint(address to, uint256 tokenId) internal virtual {
_safeMint(to, tokenId, "");
}
function _safeMint(
address to,
uint256 tokenId,
bytes memory _data
) internal virtual {
_mint(to, tokenId);
require(
_checkOnERC721Received(address(0), to, tokenId, _data),
"ERC721: transfer to non ERC721Receiver implementer"
);
}
function _mint(address to, uint256 tokenId) internal virtual {
require(to != address(0), "ERC721: mint to the zero address");
require(!_exists(tokenId), "ERC721: token already minted");
_beforeTokenTransfer(address(0), to, tokenId);
_balances[to] += 1;
_owners[tokenId] = to;
emit Transfer(address(0), to, tokenId);
}
function _burn(uint256 tokenId) internal virtual {
address owner = ERC721.ownerOf(tokenId);
_beforeTokenTransfer(owner, address(0), tokenId);
// Clear approvals
_approve(address(0), tokenId);
_balances[owner] -= 1;
delete _owners[tokenId];
emit Transfer(owner, address(0), tokenId);
}
function _transfer(
address from,
address to,
uint256 tokenId
) internal virtual {
require(ERC721.ownerOf(tokenId) == from, "ERC721: transfer of token that is not own");
require(to != address(0), "ERC721: transfer to the zero address");
_beforeTokenTransfer(from, to, tokenId);
// Clear approvals from the previous owner
_approve(address(0), tokenId);
_balances[from] -= 1;
_balances[to] += 1;
_owners[tokenId] = to;
emit Transfer(from, to, tokenId);
}
/**
* @dev Approve `to` to operate on `tokenId`
*
* Emits a {Approval} event.
*/
function _approve(address to, uint256 tokenId) internal virtual {
_tokenApprovals[tokenId] = to;
emit Approval(ERC721.ownerOf(tokenId), to, tokenId);
}
function _checkOnERC721Received(
address from,
address to,
uint256 tokenId,
bytes memory _data
) private returns (bool) {
if (to.isContract()) {
try IERC721Receiver(to).onERC721Received(_msgSender(), from, tokenId, _data) returns (bytes4 retval) {
return retval == IERC721Receiver.onERC721Received.selector;
} catch (bytes memory reason) {
if (reason.length == 0) {
revert("ERC721: transfer to non ERC721Receiver implementer");
} else {
assembly {
revert(add(32, reason), mload(reason))
}
}
}
} else {
return true;
}
}
function _beforeTokenTransfer(
address from,
address to,
uint256 tokenId
) internal virtual {}
} | setApprovalForAll | function setApprovalForAll(address operator, bool approved) public virtual override {
require(operator != _msgSender(), "ERC721: approve to caller");
_operatorApprovals[_msgSender()][operator] = approved;
emit ApprovalForAll(_msgSender(), operator, approved);
}
| /**
* @dev See {IERC721-setApprovalForAll}.
*/ | NatSpecMultiLine | v0.8.7+commit.e28d00a7 | MIT | ipfs://ec30ad3b2c7be55c484ddb84aa17c0c44a22d432c6fab023a60ec5e2d7d4b3de | {
"func_code_index": [
3768,
4068
]
} | 8,617 |
||
LinguaFranca | @openzeppelin/contracts/token/ERC721/ERC721.sol | 0x9a7a5ff2c9563e96fbbed4dda94d5549b30f1efb | Solidity | ERC721 | contract ERC721 is Context, ERC165, IERC721, IERC721Metadata {
using Address for address;
using Strings for uint256;
// Token name
string private _name;
// Token symbol
string private _symbol;
// Mapping from token ID to owner address
mapping(uint256 => address) private _owners;
// Mapping owner address to token count
mapping(address => uint256) private _balances;
// Mapping from token ID to approved address
mapping(uint256 => address) private _tokenApprovals;
// Mapping from owner to operator approvals
mapping(address => mapping(address => bool)) private _operatorApprovals;
/**
* @dev Initializes the contract by setting a `name` and a `symbol` to the token collection.
*/
constructor(string memory name_, string memory symbol_) {
_name = name_;
_symbol = symbol_;
}
/**
* @dev See {IERC165-supportsInterface}.
*/
function supportsInterface(bytes4 interfaceId) public view virtual override(ERC165, IERC165) returns (bool) {
return
interfaceId == type(IERC721).interfaceId ||
interfaceId == type(IERC721Metadata).interfaceId ||
super.supportsInterface(interfaceId);
}
/**
* @dev See {IERC721-balanceOf}.
*/
function balanceOf(address owner) public view virtual override returns (uint256) {
require(owner != address(0), "ERC721: balance query for the zero address");
return _balances[owner];
}
/**
* @dev See {IERC721-ownerOf}.
*/
function ownerOf(uint256 tokenId) public view virtual override returns (address) {
address owner = _owners[tokenId];
require(owner != address(0), "ERC721: owner query for nonexistent token");
return owner;
}
/**
* @dev See {IERC721Metadata-name}.
*/
function name() public view virtual override returns (string memory) {
return _name;
}
/**
* @dev See {IERC721Metadata-symbol}.
*/
function symbol() public view virtual override returns (string memory) {
return _symbol;
}
/**
* @dev See {IERC721Metadata-tokenURI}.
*/
function tokenURI(uint256 tokenId) public view virtual override returns (string memory) {
require(_exists(tokenId), "ERC721Metadata: URI query for nonexistent token");
string memory baseURI = _baseURI();
return bytes(baseURI).length > 0 ? string(abi.encodePacked(baseURI, tokenId.toString())) : "";
}
/**
* @dev Base URI for computing {tokenURI}. If set, the resulting URI for each
* token will be the concatenation of the `baseURI` and the `tokenId`. Empty
* by default, can be overriden in child contracts.
*/
function _baseURI() internal view virtual returns (string memory) {
return "";
}
/**
* @dev See {IERC721-approve}.
*/
function approve(address to, uint256 tokenId) public virtual override {
address owner = ERC721.ownerOf(tokenId);
require(to != owner, "ERC721: approval to current owner");
require(
_msgSender() == owner || isApprovedForAll(owner, _msgSender()),
"ERC721: approve caller is not owner nor approved for all"
);
_approve(to, tokenId);
}
/**
* @dev See {IERC721-getApproved}.
*/
function getApproved(uint256 tokenId) public view virtual override returns (address) {
require(_exists(tokenId), "ERC721: approved query for nonexistent token");
return _tokenApprovals[tokenId];
}
/**
* @dev See {IERC721-setApprovalForAll}.
*/
function setApprovalForAll(address operator, bool approved) public virtual override {
require(operator != _msgSender(), "ERC721: approve to caller");
_operatorApprovals[_msgSender()][operator] = approved;
emit ApprovalForAll(_msgSender(), operator, approved);
}
/**
* @dev See {IERC721-isApprovedForAll}.
*/
function isApprovedForAll(address owner, address operator) public view virtual override returns (bool) {
return _operatorApprovals[owner][operator];
}
/**
* @dev See {IERC721-transferFrom}.
*/
function transferFrom(
address from,
address to,
uint256 tokenId
) public virtual override {
//solhint-disable-next-line max-line-length
require(_isApprovedOrOwner(_msgSender(), tokenId), "ERC721: transfer caller is not owner nor approved");
_transfer(from, to, tokenId);
}
/**
* @dev See {IERC721-safeTransferFrom}.
*/
function safeTransferFrom(
address from,
address to,
uint256 tokenId
) public virtual override {
safeTransferFrom(from, to, tokenId, "");
}
/**
* @dev See {IERC721-safeTransferFrom}.
*/
function safeTransferFrom(
address from,
address to,
uint256 tokenId,
bytes memory _data
) public virtual override {
require(_isApprovedOrOwner(_msgSender(), tokenId), "ERC721: transfer caller is not owner nor approved");
_safeTransfer(from, to, tokenId, _data);
}
function _safeTransfer(
address from,
address to,
uint256 tokenId,
bytes memory _data
) internal virtual {
_transfer(from, to, tokenId);
require(_checkOnERC721Received(from, to, tokenId, _data), "ERC721: transfer to non ERC721Receiver implementer");
}
function _exists(uint256 tokenId) internal view virtual returns (bool) {
return _owners[tokenId] != address(0);
}
function _isApprovedOrOwner(address spender, uint256 tokenId) internal view virtual returns (bool) {
require(_exists(tokenId), "ERC721: operator query for nonexistent token");
address owner = ERC721.ownerOf(tokenId);
return (spender == owner || getApproved(tokenId) == spender || isApprovedForAll(owner, spender));
}
function _safeMint(address to, uint256 tokenId) internal virtual {
_safeMint(to, tokenId, "");
}
function _safeMint(
address to,
uint256 tokenId,
bytes memory _data
) internal virtual {
_mint(to, tokenId);
require(
_checkOnERC721Received(address(0), to, tokenId, _data),
"ERC721: transfer to non ERC721Receiver implementer"
);
}
function _mint(address to, uint256 tokenId) internal virtual {
require(to != address(0), "ERC721: mint to the zero address");
require(!_exists(tokenId), "ERC721: token already minted");
_beforeTokenTransfer(address(0), to, tokenId);
_balances[to] += 1;
_owners[tokenId] = to;
emit Transfer(address(0), to, tokenId);
}
function _burn(uint256 tokenId) internal virtual {
address owner = ERC721.ownerOf(tokenId);
_beforeTokenTransfer(owner, address(0), tokenId);
// Clear approvals
_approve(address(0), tokenId);
_balances[owner] -= 1;
delete _owners[tokenId];
emit Transfer(owner, address(0), tokenId);
}
function _transfer(
address from,
address to,
uint256 tokenId
) internal virtual {
require(ERC721.ownerOf(tokenId) == from, "ERC721: transfer of token that is not own");
require(to != address(0), "ERC721: transfer to the zero address");
_beforeTokenTransfer(from, to, tokenId);
// Clear approvals from the previous owner
_approve(address(0), tokenId);
_balances[from] -= 1;
_balances[to] += 1;
_owners[tokenId] = to;
emit Transfer(from, to, tokenId);
}
/**
* @dev Approve `to` to operate on `tokenId`
*
* Emits a {Approval} event.
*/
function _approve(address to, uint256 tokenId) internal virtual {
_tokenApprovals[tokenId] = to;
emit Approval(ERC721.ownerOf(tokenId), to, tokenId);
}
function _checkOnERC721Received(
address from,
address to,
uint256 tokenId,
bytes memory _data
) private returns (bool) {
if (to.isContract()) {
try IERC721Receiver(to).onERC721Received(_msgSender(), from, tokenId, _data) returns (bytes4 retval) {
return retval == IERC721Receiver.onERC721Received.selector;
} catch (bytes memory reason) {
if (reason.length == 0) {
revert("ERC721: transfer to non ERC721Receiver implementer");
} else {
assembly {
revert(add(32, reason), mload(reason))
}
}
}
} else {
return true;
}
}
function _beforeTokenTransfer(
address from,
address to,
uint256 tokenId
) internal virtual {}
} | isApprovedForAll | function isApprovedForAll(address owner, address operator) public view virtual override returns (bool) {
return _operatorApprovals[owner][operator];
}
| /**
* @dev See {IERC721-isApprovedForAll}.
*/ | NatSpecMultiLine | v0.8.7+commit.e28d00a7 | MIT | ipfs://ec30ad3b2c7be55c484ddb84aa17c0c44a22d432c6fab023a60ec5e2d7d4b3de | {
"func_code_index": [
4134,
4303
]
} | 8,618 |
||
LinguaFranca | @openzeppelin/contracts/token/ERC721/ERC721.sol | 0x9a7a5ff2c9563e96fbbed4dda94d5549b30f1efb | Solidity | ERC721 | contract ERC721 is Context, ERC165, IERC721, IERC721Metadata {
using Address for address;
using Strings for uint256;
// Token name
string private _name;
// Token symbol
string private _symbol;
// Mapping from token ID to owner address
mapping(uint256 => address) private _owners;
// Mapping owner address to token count
mapping(address => uint256) private _balances;
// Mapping from token ID to approved address
mapping(uint256 => address) private _tokenApprovals;
// Mapping from owner to operator approvals
mapping(address => mapping(address => bool)) private _operatorApprovals;
/**
* @dev Initializes the contract by setting a `name` and a `symbol` to the token collection.
*/
constructor(string memory name_, string memory symbol_) {
_name = name_;
_symbol = symbol_;
}
/**
* @dev See {IERC165-supportsInterface}.
*/
function supportsInterface(bytes4 interfaceId) public view virtual override(ERC165, IERC165) returns (bool) {
return
interfaceId == type(IERC721).interfaceId ||
interfaceId == type(IERC721Metadata).interfaceId ||
super.supportsInterface(interfaceId);
}
/**
* @dev See {IERC721-balanceOf}.
*/
function balanceOf(address owner) public view virtual override returns (uint256) {
require(owner != address(0), "ERC721: balance query for the zero address");
return _balances[owner];
}
/**
* @dev See {IERC721-ownerOf}.
*/
function ownerOf(uint256 tokenId) public view virtual override returns (address) {
address owner = _owners[tokenId];
require(owner != address(0), "ERC721: owner query for nonexistent token");
return owner;
}
/**
* @dev See {IERC721Metadata-name}.
*/
function name() public view virtual override returns (string memory) {
return _name;
}
/**
* @dev See {IERC721Metadata-symbol}.
*/
function symbol() public view virtual override returns (string memory) {
return _symbol;
}
/**
* @dev See {IERC721Metadata-tokenURI}.
*/
function tokenURI(uint256 tokenId) public view virtual override returns (string memory) {
require(_exists(tokenId), "ERC721Metadata: URI query for nonexistent token");
string memory baseURI = _baseURI();
return bytes(baseURI).length > 0 ? string(abi.encodePacked(baseURI, tokenId.toString())) : "";
}
/**
* @dev Base URI for computing {tokenURI}. If set, the resulting URI for each
* token will be the concatenation of the `baseURI` and the `tokenId`. Empty
* by default, can be overriden in child contracts.
*/
function _baseURI() internal view virtual returns (string memory) {
return "";
}
/**
* @dev See {IERC721-approve}.
*/
function approve(address to, uint256 tokenId) public virtual override {
address owner = ERC721.ownerOf(tokenId);
require(to != owner, "ERC721: approval to current owner");
require(
_msgSender() == owner || isApprovedForAll(owner, _msgSender()),
"ERC721: approve caller is not owner nor approved for all"
);
_approve(to, tokenId);
}
/**
* @dev See {IERC721-getApproved}.
*/
function getApproved(uint256 tokenId) public view virtual override returns (address) {
require(_exists(tokenId), "ERC721: approved query for nonexistent token");
return _tokenApprovals[tokenId];
}
/**
* @dev See {IERC721-setApprovalForAll}.
*/
function setApprovalForAll(address operator, bool approved) public virtual override {
require(operator != _msgSender(), "ERC721: approve to caller");
_operatorApprovals[_msgSender()][operator] = approved;
emit ApprovalForAll(_msgSender(), operator, approved);
}
/**
* @dev See {IERC721-isApprovedForAll}.
*/
function isApprovedForAll(address owner, address operator) public view virtual override returns (bool) {
return _operatorApprovals[owner][operator];
}
/**
* @dev See {IERC721-transferFrom}.
*/
function transferFrom(
address from,
address to,
uint256 tokenId
) public virtual override {
//solhint-disable-next-line max-line-length
require(_isApprovedOrOwner(_msgSender(), tokenId), "ERC721: transfer caller is not owner nor approved");
_transfer(from, to, tokenId);
}
/**
* @dev See {IERC721-safeTransferFrom}.
*/
function safeTransferFrom(
address from,
address to,
uint256 tokenId
) public virtual override {
safeTransferFrom(from, to, tokenId, "");
}
/**
* @dev See {IERC721-safeTransferFrom}.
*/
function safeTransferFrom(
address from,
address to,
uint256 tokenId,
bytes memory _data
) public virtual override {
require(_isApprovedOrOwner(_msgSender(), tokenId), "ERC721: transfer caller is not owner nor approved");
_safeTransfer(from, to, tokenId, _data);
}
function _safeTransfer(
address from,
address to,
uint256 tokenId,
bytes memory _data
) internal virtual {
_transfer(from, to, tokenId);
require(_checkOnERC721Received(from, to, tokenId, _data), "ERC721: transfer to non ERC721Receiver implementer");
}
function _exists(uint256 tokenId) internal view virtual returns (bool) {
return _owners[tokenId] != address(0);
}
function _isApprovedOrOwner(address spender, uint256 tokenId) internal view virtual returns (bool) {
require(_exists(tokenId), "ERC721: operator query for nonexistent token");
address owner = ERC721.ownerOf(tokenId);
return (spender == owner || getApproved(tokenId) == spender || isApprovedForAll(owner, spender));
}
function _safeMint(address to, uint256 tokenId) internal virtual {
_safeMint(to, tokenId, "");
}
function _safeMint(
address to,
uint256 tokenId,
bytes memory _data
) internal virtual {
_mint(to, tokenId);
require(
_checkOnERC721Received(address(0), to, tokenId, _data),
"ERC721: transfer to non ERC721Receiver implementer"
);
}
function _mint(address to, uint256 tokenId) internal virtual {
require(to != address(0), "ERC721: mint to the zero address");
require(!_exists(tokenId), "ERC721: token already minted");
_beforeTokenTransfer(address(0), to, tokenId);
_balances[to] += 1;
_owners[tokenId] = to;
emit Transfer(address(0), to, tokenId);
}
function _burn(uint256 tokenId) internal virtual {
address owner = ERC721.ownerOf(tokenId);
_beforeTokenTransfer(owner, address(0), tokenId);
// Clear approvals
_approve(address(0), tokenId);
_balances[owner] -= 1;
delete _owners[tokenId];
emit Transfer(owner, address(0), tokenId);
}
function _transfer(
address from,
address to,
uint256 tokenId
) internal virtual {
require(ERC721.ownerOf(tokenId) == from, "ERC721: transfer of token that is not own");
require(to != address(0), "ERC721: transfer to the zero address");
_beforeTokenTransfer(from, to, tokenId);
// Clear approvals from the previous owner
_approve(address(0), tokenId);
_balances[from] -= 1;
_balances[to] += 1;
_owners[tokenId] = to;
emit Transfer(from, to, tokenId);
}
/**
* @dev Approve `to` to operate on `tokenId`
*
* Emits a {Approval} event.
*/
function _approve(address to, uint256 tokenId) internal virtual {
_tokenApprovals[tokenId] = to;
emit Approval(ERC721.ownerOf(tokenId), to, tokenId);
}
function _checkOnERC721Received(
address from,
address to,
uint256 tokenId,
bytes memory _data
) private returns (bool) {
if (to.isContract()) {
try IERC721Receiver(to).onERC721Received(_msgSender(), from, tokenId, _data) returns (bytes4 retval) {
return retval == IERC721Receiver.onERC721Received.selector;
} catch (bytes memory reason) {
if (reason.length == 0) {
revert("ERC721: transfer to non ERC721Receiver implementer");
} else {
assembly {
revert(add(32, reason), mload(reason))
}
}
}
} else {
return true;
}
}
function _beforeTokenTransfer(
address from,
address to,
uint256 tokenId
) internal virtual {}
} | transferFrom | function transferFrom(
address from,
address to,
uint256 tokenId
) public virtual override {
//solhint-disable-next-line max-line-length
require(_isApprovedOrOwner(_msgSender(), tokenId), "ERC721: transfer caller is not owner nor approved");
_transfer(from, to, tokenId);
}
| /**
* @dev See {IERC721-transferFrom}.
*/ | NatSpecMultiLine | v0.8.7+commit.e28d00a7 | MIT | ipfs://ec30ad3b2c7be55c484ddb84aa17c0c44a22d432c6fab023a60ec5e2d7d4b3de | {
"func_code_index": [
4365,
4709
]
} | 8,619 |
||
LinguaFranca | @openzeppelin/contracts/token/ERC721/ERC721.sol | 0x9a7a5ff2c9563e96fbbed4dda94d5549b30f1efb | Solidity | ERC721 | contract ERC721 is Context, ERC165, IERC721, IERC721Metadata {
using Address for address;
using Strings for uint256;
// Token name
string private _name;
// Token symbol
string private _symbol;
// Mapping from token ID to owner address
mapping(uint256 => address) private _owners;
// Mapping owner address to token count
mapping(address => uint256) private _balances;
// Mapping from token ID to approved address
mapping(uint256 => address) private _tokenApprovals;
// Mapping from owner to operator approvals
mapping(address => mapping(address => bool)) private _operatorApprovals;
/**
* @dev Initializes the contract by setting a `name` and a `symbol` to the token collection.
*/
constructor(string memory name_, string memory symbol_) {
_name = name_;
_symbol = symbol_;
}
/**
* @dev See {IERC165-supportsInterface}.
*/
function supportsInterface(bytes4 interfaceId) public view virtual override(ERC165, IERC165) returns (bool) {
return
interfaceId == type(IERC721).interfaceId ||
interfaceId == type(IERC721Metadata).interfaceId ||
super.supportsInterface(interfaceId);
}
/**
* @dev See {IERC721-balanceOf}.
*/
function balanceOf(address owner) public view virtual override returns (uint256) {
require(owner != address(0), "ERC721: balance query for the zero address");
return _balances[owner];
}
/**
* @dev See {IERC721-ownerOf}.
*/
function ownerOf(uint256 tokenId) public view virtual override returns (address) {
address owner = _owners[tokenId];
require(owner != address(0), "ERC721: owner query for nonexistent token");
return owner;
}
/**
* @dev See {IERC721Metadata-name}.
*/
function name() public view virtual override returns (string memory) {
return _name;
}
/**
* @dev See {IERC721Metadata-symbol}.
*/
function symbol() public view virtual override returns (string memory) {
return _symbol;
}
/**
* @dev See {IERC721Metadata-tokenURI}.
*/
function tokenURI(uint256 tokenId) public view virtual override returns (string memory) {
require(_exists(tokenId), "ERC721Metadata: URI query for nonexistent token");
string memory baseURI = _baseURI();
return bytes(baseURI).length > 0 ? string(abi.encodePacked(baseURI, tokenId.toString())) : "";
}
/**
* @dev Base URI for computing {tokenURI}. If set, the resulting URI for each
* token will be the concatenation of the `baseURI` and the `tokenId`. Empty
* by default, can be overriden in child contracts.
*/
function _baseURI() internal view virtual returns (string memory) {
return "";
}
/**
* @dev See {IERC721-approve}.
*/
function approve(address to, uint256 tokenId) public virtual override {
address owner = ERC721.ownerOf(tokenId);
require(to != owner, "ERC721: approval to current owner");
require(
_msgSender() == owner || isApprovedForAll(owner, _msgSender()),
"ERC721: approve caller is not owner nor approved for all"
);
_approve(to, tokenId);
}
/**
* @dev See {IERC721-getApproved}.
*/
function getApproved(uint256 tokenId) public view virtual override returns (address) {
require(_exists(tokenId), "ERC721: approved query for nonexistent token");
return _tokenApprovals[tokenId];
}
/**
* @dev See {IERC721-setApprovalForAll}.
*/
function setApprovalForAll(address operator, bool approved) public virtual override {
require(operator != _msgSender(), "ERC721: approve to caller");
_operatorApprovals[_msgSender()][operator] = approved;
emit ApprovalForAll(_msgSender(), operator, approved);
}
/**
* @dev See {IERC721-isApprovedForAll}.
*/
function isApprovedForAll(address owner, address operator) public view virtual override returns (bool) {
return _operatorApprovals[owner][operator];
}
/**
* @dev See {IERC721-transferFrom}.
*/
function transferFrom(
address from,
address to,
uint256 tokenId
) public virtual override {
//solhint-disable-next-line max-line-length
require(_isApprovedOrOwner(_msgSender(), tokenId), "ERC721: transfer caller is not owner nor approved");
_transfer(from, to, tokenId);
}
/**
* @dev See {IERC721-safeTransferFrom}.
*/
function safeTransferFrom(
address from,
address to,
uint256 tokenId
) public virtual override {
safeTransferFrom(from, to, tokenId, "");
}
/**
* @dev See {IERC721-safeTransferFrom}.
*/
function safeTransferFrom(
address from,
address to,
uint256 tokenId,
bytes memory _data
) public virtual override {
require(_isApprovedOrOwner(_msgSender(), tokenId), "ERC721: transfer caller is not owner nor approved");
_safeTransfer(from, to, tokenId, _data);
}
function _safeTransfer(
address from,
address to,
uint256 tokenId,
bytes memory _data
) internal virtual {
_transfer(from, to, tokenId);
require(_checkOnERC721Received(from, to, tokenId, _data), "ERC721: transfer to non ERC721Receiver implementer");
}
function _exists(uint256 tokenId) internal view virtual returns (bool) {
return _owners[tokenId] != address(0);
}
function _isApprovedOrOwner(address spender, uint256 tokenId) internal view virtual returns (bool) {
require(_exists(tokenId), "ERC721: operator query for nonexistent token");
address owner = ERC721.ownerOf(tokenId);
return (spender == owner || getApproved(tokenId) == spender || isApprovedForAll(owner, spender));
}
function _safeMint(address to, uint256 tokenId) internal virtual {
_safeMint(to, tokenId, "");
}
function _safeMint(
address to,
uint256 tokenId,
bytes memory _data
) internal virtual {
_mint(to, tokenId);
require(
_checkOnERC721Received(address(0), to, tokenId, _data),
"ERC721: transfer to non ERC721Receiver implementer"
);
}
function _mint(address to, uint256 tokenId) internal virtual {
require(to != address(0), "ERC721: mint to the zero address");
require(!_exists(tokenId), "ERC721: token already minted");
_beforeTokenTransfer(address(0), to, tokenId);
_balances[to] += 1;
_owners[tokenId] = to;
emit Transfer(address(0), to, tokenId);
}
function _burn(uint256 tokenId) internal virtual {
address owner = ERC721.ownerOf(tokenId);
_beforeTokenTransfer(owner, address(0), tokenId);
// Clear approvals
_approve(address(0), tokenId);
_balances[owner] -= 1;
delete _owners[tokenId];
emit Transfer(owner, address(0), tokenId);
}
function _transfer(
address from,
address to,
uint256 tokenId
) internal virtual {
require(ERC721.ownerOf(tokenId) == from, "ERC721: transfer of token that is not own");
require(to != address(0), "ERC721: transfer to the zero address");
_beforeTokenTransfer(from, to, tokenId);
// Clear approvals from the previous owner
_approve(address(0), tokenId);
_balances[from] -= 1;
_balances[to] += 1;
_owners[tokenId] = to;
emit Transfer(from, to, tokenId);
}
/**
* @dev Approve `to` to operate on `tokenId`
*
* Emits a {Approval} event.
*/
function _approve(address to, uint256 tokenId) internal virtual {
_tokenApprovals[tokenId] = to;
emit Approval(ERC721.ownerOf(tokenId), to, tokenId);
}
function _checkOnERC721Received(
address from,
address to,
uint256 tokenId,
bytes memory _data
) private returns (bool) {
if (to.isContract()) {
try IERC721Receiver(to).onERC721Received(_msgSender(), from, tokenId, _data) returns (bytes4 retval) {
return retval == IERC721Receiver.onERC721Received.selector;
} catch (bytes memory reason) {
if (reason.length == 0) {
revert("ERC721: transfer to non ERC721Receiver implementer");
} else {
assembly {
revert(add(32, reason), mload(reason))
}
}
}
} else {
return true;
}
}
function _beforeTokenTransfer(
address from,
address to,
uint256 tokenId
) internal virtual {}
} | safeTransferFrom | function safeTransferFrom(
address from,
address to,
uint256 tokenId
) public virtual override {
safeTransferFrom(from, to, tokenId, "");
}
| /**
* @dev See {IERC721-safeTransferFrom}.
*/ | NatSpecMultiLine | v0.8.7+commit.e28d00a7 | MIT | ipfs://ec30ad3b2c7be55c484ddb84aa17c0c44a22d432c6fab023a60ec5e2d7d4b3de | {
"func_code_index": [
4775,
4965
]
} | 8,620 |
||
LinguaFranca | @openzeppelin/contracts/token/ERC721/ERC721.sol | 0x9a7a5ff2c9563e96fbbed4dda94d5549b30f1efb | Solidity | ERC721 | contract ERC721 is Context, ERC165, IERC721, IERC721Metadata {
using Address for address;
using Strings for uint256;
// Token name
string private _name;
// Token symbol
string private _symbol;
// Mapping from token ID to owner address
mapping(uint256 => address) private _owners;
// Mapping owner address to token count
mapping(address => uint256) private _balances;
// Mapping from token ID to approved address
mapping(uint256 => address) private _tokenApprovals;
// Mapping from owner to operator approvals
mapping(address => mapping(address => bool)) private _operatorApprovals;
/**
* @dev Initializes the contract by setting a `name` and a `symbol` to the token collection.
*/
constructor(string memory name_, string memory symbol_) {
_name = name_;
_symbol = symbol_;
}
/**
* @dev See {IERC165-supportsInterface}.
*/
function supportsInterface(bytes4 interfaceId) public view virtual override(ERC165, IERC165) returns (bool) {
return
interfaceId == type(IERC721).interfaceId ||
interfaceId == type(IERC721Metadata).interfaceId ||
super.supportsInterface(interfaceId);
}
/**
* @dev See {IERC721-balanceOf}.
*/
function balanceOf(address owner) public view virtual override returns (uint256) {
require(owner != address(0), "ERC721: balance query for the zero address");
return _balances[owner];
}
/**
* @dev See {IERC721-ownerOf}.
*/
function ownerOf(uint256 tokenId) public view virtual override returns (address) {
address owner = _owners[tokenId];
require(owner != address(0), "ERC721: owner query for nonexistent token");
return owner;
}
/**
* @dev See {IERC721Metadata-name}.
*/
function name() public view virtual override returns (string memory) {
return _name;
}
/**
* @dev See {IERC721Metadata-symbol}.
*/
function symbol() public view virtual override returns (string memory) {
return _symbol;
}
/**
* @dev See {IERC721Metadata-tokenURI}.
*/
function tokenURI(uint256 tokenId) public view virtual override returns (string memory) {
require(_exists(tokenId), "ERC721Metadata: URI query for nonexistent token");
string memory baseURI = _baseURI();
return bytes(baseURI).length > 0 ? string(abi.encodePacked(baseURI, tokenId.toString())) : "";
}
/**
* @dev Base URI for computing {tokenURI}. If set, the resulting URI for each
* token will be the concatenation of the `baseURI` and the `tokenId`. Empty
* by default, can be overriden in child contracts.
*/
function _baseURI() internal view virtual returns (string memory) {
return "";
}
/**
* @dev See {IERC721-approve}.
*/
function approve(address to, uint256 tokenId) public virtual override {
address owner = ERC721.ownerOf(tokenId);
require(to != owner, "ERC721: approval to current owner");
require(
_msgSender() == owner || isApprovedForAll(owner, _msgSender()),
"ERC721: approve caller is not owner nor approved for all"
);
_approve(to, tokenId);
}
/**
* @dev See {IERC721-getApproved}.
*/
function getApproved(uint256 tokenId) public view virtual override returns (address) {
require(_exists(tokenId), "ERC721: approved query for nonexistent token");
return _tokenApprovals[tokenId];
}
/**
* @dev See {IERC721-setApprovalForAll}.
*/
function setApprovalForAll(address operator, bool approved) public virtual override {
require(operator != _msgSender(), "ERC721: approve to caller");
_operatorApprovals[_msgSender()][operator] = approved;
emit ApprovalForAll(_msgSender(), operator, approved);
}
/**
* @dev See {IERC721-isApprovedForAll}.
*/
function isApprovedForAll(address owner, address operator) public view virtual override returns (bool) {
return _operatorApprovals[owner][operator];
}
/**
* @dev See {IERC721-transferFrom}.
*/
function transferFrom(
address from,
address to,
uint256 tokenId
) public virtual override {
//solhint-disable-next-line max-line-length
require(_isApprovedOrOwner(_msgSender(), tokenId), "ERC721: transfer caller is not owner nor approved");
_transfer(from, to, tokenId);
}
/**
* @dev See {IERC721-safeTransferFrom}.
*/
function safeTransferFrom(
address from,
address to,
uint256 tokenId
) public virtual override {
safeTransferFrom(from, to, tokenId, "");
}
/**
* @dev See {IERC721-safeTransferFrom}.
*/
function safeTransferFrom(
address from,
address to,
uint256 tokenId,
bytes memory _data
) public virtual override {
require(_isApprovedOrOwner(_msgSender(), tokenId), "ERC721: transfer caller is not owner nor approved");
_safeTransfer(from, to, tokenId, _data);
}
function _safeTransfer(
address from,
address to,
uint256 tokenId,
bytes memory _data
) internal virtual {
_transfer(from, to, tokenId);
require(_checkOnERC721Received(from, to, tokenId, _data), "ERC721: transfer to non ERC721Receiver implementer");
}
function _exists(uint256 tokenId) internal view virtual returns (bool) {
return _owners[tokenId] != address(0);
}
function _isApprovedOrOwner(address spender, uint256 tokenId) internal view virtual returns (bool) {
require(_exists(tokenId), "ERC721: operator query for nonexistent token");
address owner = ERC721.ownerOf(tokenId);
return (spender == owner || getApproved(tokenId) == spender || isApprovedForAll(owner, spender));
}
function _safeMint(address to, uint256 tokenId) internal virtual {
_safeMint(to, tokenId, "");
}
function _safeMint(
address to,
uint256 tokenId,
bytes memory _data
) internal virtual {
_mint(to, tokenId);
require(
_checkOnERC721Received(address(0), to, tokenId, _data),
"ERC721: transfer to non ERC721Receiver implementer"
);
}
function _mint(address to, uint256 tokenId) internal virtual {
require(to != address(0), "ERC721: mint to the zero address");
require(!_exists(tokenId), "ERC721: token already minted");
_beforeTokenTransfer(address(0), to, tokenId);
_balances[to] += 1;
_owners[tokenId] = to;
emit Transfer(address(0), to, tokenId);
}
function _burn(uint256 tokenId) internal virtual {
address owner = ERC721.ownerOf(tokenId);
_beforeTokenTransfer(owner, address(0), tokenId);
// Clear approvals
_approve(address(0), tokenId);
_balances[owner] -= 1;
delete _owners[tokenId];
emit Transfer(owner, address(0), tokenId);
}
function _transfer(
address from,
address to,
uint256 tokenId
) internal virtual {
require(ERC721.ownerOf(tokenId) == from, "ERC721: transfer of token that is not own");
require(to != address(0), "ERC721: transfer to the zero address");
_beforeTokenTransfer(from, to, tokenId);
// Clear approvals from the previous owner
_approve(address(0), tokenId);
_balances[from] -= 1;
_balances[to] += 1;
_owners[tokenId] = to;
emit Transfer(from, to, tokenId);
}
/**
* @dev Approve `to` to operate on `tokenId`
*
* Emits a {Approval} event.
*/
function _approve(address to, uint256 tokenId) internal virtual {
_tokenApprovals[tokenId] = to;
emit Approval(ERC721.ownerOf(tokenId), to, tokenId);
}
function _checkOnERC721Received(
address from,
address to,
uint256 tokenId,
bytes memory _data
) private returns (bool) {
if (to.isContract()) {
try IERC721Receiver(to).onERC721Received(_msgSender(), from, tokenId, _data) returns (bytes4 retval) {
return retval == IERC721Receiver.onERC721Received.selector;
} catch (bytes memory reason) {
if (reason.length == 0) {
revert("ERC721: transfer to non ERC721Receiver implementer");
} else {
assembly {
revert(add(32, reason), mload(reason))
}
}
}
} else {
return true;
}
}
function _beforeTokenTransfer(
address from,
address to,
uint256 tokenId
) internal virtual {}
} | safeTransferFrom | function safeTransferFrom(
address from,
address to,
uint256 tokenId,
bytes memory _data
) public virtual override {
require(_isApprovedOrOwner(_msgSender(), tokenId), "ERC721: transfer caller is not owner nor approved");
_safeTransfer(from, to, tokenId, _data);
}
| /**
* @dev See {IERC721-safeTransferFrom}.
*/ | NatSpecMultiLine | v0.8.7+commit.e28d00a7 | MIT | ipfs://ec30ad3b2c7be55c484ddb84aa17c0c44a22d432c6fab023a60ec5e2d7d4b3de | {
"func_code_index": [
5031,
5364
]
} | 8,621 |
||
LinguaFranca | @openzeppelin/contracts/token/ERC721/ERC721.sol | 0x9a7a5ff2c9563e96fbbed4dda94d5549b30f1efb | Solidity | ERC721 | contract ERC721 is Context, ERC165, IERC721, IERC721Metadata {
using Address for address;
using Strings for uint256;
// Token name
string private _name;
// Token symbol
string private _symbol;
// Mapping from token ID to owner address
mapping(uint256 => address) private _owners;
// Mapping owner address to token count
mapping(address => uint256) private _balances;
// Mapping from token ID to approved address
mapping(uint256 => address) private _tokenApprovals;
// Mapping from owner to operator approvals
mapping(address => mapping(address => bool)) private _operatorApprovals;
/**
* @dev Initializes the contract by setting a `name` and a `symbol` to the token collection.
*/
constructor(string memory name_, string memory symbol_) {
_name = name_;
_symbol = symbol_;
}
/**
* @dev See {IERC165-supportsInterface}.
*/
function supportsInterface(bytes4 interfaceId) public view virtual override(ERC165, IERC165) returns (bool) {
return
interfaceId == type(IERC721).interfaceId ||
interfaceId == type(IERC721Metadata).interfaceId ||
super.supportsInterface(interfaceId);
}
/**
* @dev See {IERC721-balanceOf}.
*/
function balanceOf(address owner) public view virtual override returns (uint256) {
require(owner != address(0), "ERC721: balance query for the zero address");
return _balances[owner];
}
/**
* @dev See {IERC721-ownerOf}.
*/
function ownerOf(uint256 tokenId) public view virtual override returns (address) {
address owner = _owners[tokenId];
require(owner != address(0), "ERC721: owner query for nonexistent token");
return owner;
}
/**
* @dev See {IERC721Metadata-name}.
*/
function name() public view virtual override returns (string memory) {
return _name;
}
/**
* @dev See {IERC721Metadata-symbol}.
*/
function symbol() public view virtual override returns (string memory) {
return _symbol;
}
/**
* @dev See {IERC721Metadata-tokenURI}.
*/
function tokenURI(uint256 tokenId) public view virtual override returns (string memory) {
require(_exists(tokenId), "ERC721Metadata: URI query for nonexistent token");
string memory baseURI = _baseURI();
return bytes(baseURI).length > 0 ? string(abi.encodePacked(baseURI, tokenId.toString())) : "";
}
/**
* @dev Base URI for computing {tokenURI}. If set, the resulting URI for each
* token will be the concatenation of the `baseURI` and the `tokenId`. Empty
* by default, can be overriden in child contracts.
*/
function _baseURI() internal view virtual returns (string memory) {
return "";
}
/**
* @dev See {IERC721-approve}.
*/
function approve(address to, uint256 tokenId) public virtual override {
address owner = ERC721.ownerOf(tokenId);
require(to != owner, "ERC721: approval to current owner");
require(
_msgSender() == owner || isApprovedForAll(owner, _msgSender()),
"ERC721: approve caller is not owner nor approved for all"
);
_approve(to, tokenId);
}
/**
* @dev See {IERC721-getApproved}.
*/
function getApproved(uint256 tokenId) public view virtual override returns (address) {
require(_exists(tokenId), "ERC721: approved query for nonexistent token");
return _tokenApprovals[tokenId];
}
/**
* @dev See {IERC721-setApprovalForAll}.
*/
function setApprovalForAll(address operator, bool approved) public virtual override {
require(operator != _msgSender(), "ERC721: approve to caller");
_operatorApprovals[_msgSender()][operator] = approved;
emit ApprovalForAll(_msgSender(), operator, approved);
}
/**
* @dev See {IERC721-isApprovedForAll}.
*/
function isApprovedForAll(address owner, address operator) public view virtual override returns (bool) {
return _operatorApprovals[owner][operator];
}
/**
* @dev See {IERC721-transferFrom}.
*/
function transferFrom(
address from,
address to,
uint256 tokenId
) public virtual override {
//solhint-disable-next-line max-line-length
require(_isApprovedOrOwner(_msgSender(), tokenId), "ERC721: transfer caller is not owner nor approved");
_transfer(from, to, tokenId);
}
/**
* @dev See {IERC721-safeTransferFrom}.
*/
function safeTransferFrom(
address from,
address to,
uint256 tokenId
) public virtual override {
safeTransferFrom(from, to, tokenId, "");
}
/**
* @dev See {IERC721-safeTransferFrom}.
*/
function safeTransferFrom(
address from,
address to,
uint256 tokenId,
bytes memory _data
) public virtual override {
require(_isApprovedOrOwner(_msgSender(), tokenId), "ERC721: transfer caller is not owner nor approved");
_safeTransfer(from, to, tokenId, _data);
}
function _safeTransfer(
address from,
address to,
uint256 tokenId,
bytes memory _data
) internal virtual {
_transfer(from, to, tokenId);
require(_checkOnERC721Received(from, to, tokenId, _data), "ERC721: transfer to non ERC721Receiver implementer");
}
function _exists(uint256 tokenId) internal view virtual returns (bool) {
return _owners[tokenId] != address(0);
}
function _isApprovedOrOwner(address spender, uint256 tokenId) internal view virtual returns (bool) {
require(_exists(tokenId), "ERC721: operator query for nonexistent token");
address owner = ERC721.ownerOf(tokenId);
return (spender == owner || getApproved(tokenId) == spender || isApprovedForAll(owner, spender));
}
function _safeMint(address to, uint256 tokenId) internal virtual {
_safeMint(to, tokenId, "");
}
function _safeMint(
address to,
uint256 tokenId,
bytes memory _data
) internal virtual {
_mint(to, tokenId);
require(
_checkOnERC721Received(address(0), to, tokenId, _data),
"ERC721: transfer to non ERC721Receiver implementer"
);
}
function _mint(address to, uint256 tokenId) internal virtual {
require(to != address(0), "ERC721: mint to the zero address");
require(!_exists(tokenId), "ERC721: token already minted");
_beforeTokenTransfer(address(0), to, tokenId);
_balances[to] += 1;
_owners[tokenId] = to;
emit Transfer(address(0), to, tokenId);
}
function _burn(uint256 tokenId) internal virtual {
address owner = ERC721.ownerOf(tokenId);
_beforeTokenTransfer(owner, address(0), tokenId);
// Clear approvals
_approve(address(0), tokenId);
_balances[owner] -= 1;
delete _owners[tokenId];
emit Transfer(owner, address(0), tokenId);
}
function _transfer(
address from,
address to,
uint256 tokenId
) internal virtual {
require(ERC721.ownerOf(tokenId) == from, "ERC721: transfer of token that is not own");
require(to != address(0), "ERC721: transfer to the zero address");
_beforeTokenTransfer(from, to, tokenId);
// Clear approvals from the previous owner
_approve(address(0), tokenId);
_balances[from] -= 1;
_balances[to] += 1;
_owners[tokenId] = to;
emit Transfer(from, to, tokenId);
}
/**
* @dev Approve `to` to operate on `tokenId`
*
* Emits a {Approval} event.
*/
function _approve(address to, uint256 tokenId) internal virtual {
_tokenApprovals[tokenId] = to;
emit Approval(ERC721.ownerOf(tokenId), to, tokenId);
}
function _checkOnERC721Received(
address from,
address to,
uint256 tokenId,
bytes memory _data
) private returns (bool) {
if (to.isContract()) {
try IERC721Receiver(to).onERC721Received(_msgSender(), from, tokenId, _data) returns (bytes4 retval) {
return retval == IERC721Receiver.onERC721Received.selector;
} catch (bytes memory reason) {
if (reason.length == 0) {
revert("ERC721: transfer to non ERC721Receiver implementer");
} else {
assembly {
revert(add(32, reason), mload(reason))
}
}
}
} else {
return true;
}
}
function _beforeTokenTransfer(
address from,
address to,
uint256 tokenId
) internal virtual {}
} | _approve | function _approve(address to, uint256 tokenId) internal virtual {
_tokenApprovals[tokenId] = to;
emit Approval(ERC721.ownerOf(tokenId), to, tokenId);
}
| /**
* @dev Approve `to` to operate on `tokenId`
*
* Emits a {Approval} event.
*/ | NatSpecMultiLine | v0.8.7+commit.e28d00a7 | MIT | ipfs://ec30ad3b2c7be55c484ddb84aa17c0c44a22d432c6fab023a60ec5e2d7d4b3de | {
"func_code_index": [
8115,
8294
]
} | 8,622 |
||
KomicaToken | KomicaToken.sol | 0xa7c0728bf78328dc3c3e6c7e7e0da08a20eec1cb | Solidity | KomicaToken | contract KomicaToken is ERC20Interface, Owned, SafeMath {
string public symbol;
string public name;
uint8 public decimals;
uint public _totalSupply;
bytes32 public currentChallenge; // The coin starts with a challenge
uint public timeOfLastProof = now; // Variable to keep track of when rewards were given
uint public difficulty = 10**32; // Difficulty starts reasonably low
mapping(address => uint) balances;
mapping(address => mapping(address => uint)) allowed;
// ------------------------------------------------------------------------
// Constructor
// ------------------------------------------------------------------------
function KomicaToken() public {
symbol = "KOMICA";
name = "Komica Token";
decimals = 18;
_totalSupply = 188300000000000000000000000000;
balances[0x006bdc1a30995Fd5a318B48c78F01A4ecFeA209E] = _totalSupply;
Transfer(address(0), 0x006bdc1a30995Fd5a318B48c78F01A4ecFeA209E, _totalSupply);
}
// ------------------------------------------------------------------------
// Total supply
// ------------------------------------------------------------------------
function totalSupply() public constant returns (uint) {
return _totalSupply - balances[address(0)];
}
// ------------------------------------------------------------------------
// Get the token balance for account tokenOwner
// ------------------------------------------------------------------------
function balanceOf(address tokenOwner) public constant returns (uint balance) {
return balances[tokenOwner];
}
// ------------------------------------------------------------------------
// Transfer the balance from token owner's account to to account
// - Owner's account must have sufficient balance to transfer
// - 0 value transfers are allowed
// ------------------------------------------------------------------------
function transfer(address to, uint tokens) public returns (bool success) {
balances[msg.sender] = safeSub(balances[msg.sender], tokens);
balances[to] = safeAdd(balances[to], tokens);
Transfer(msg.sender, to, tokens);
return true;
}
// ------------------------------------------------------------------------
// Token owner can approve for spender to transferFrom(...) tokens
// from the token owner's account
//
// https://github.com/ethereum/EIPs/blob/master/EIPS/eip-20-token-standard.md
// recommends that there are no checks for the approval double-spend attack
// as this should be implemented in user interfaces
// ------------------------------------------------------------------------
function approve(address spender, uint tokens) public returns (bool success) {
allowed[msg.sender][spender] = tokens;
Approval(msg.sender, spender, tokens);
return true;
}
// ------------------------------------------------------------------------
// Transfer tokens from the from account to the to account
//
// The calling account must already have sufficient tokens approve(...)-d
// for spending from the from account and
// - From account must have sufficient balance to transfer
// - Spender must have sufficient allowance to transfer
// - 0 value transfers are allowed
// ------------------------------------------------------------------------
function transferFrom(address from, address to, uint tokens) public returns (bool success) {
balances[from] = safeSub(balances[from], tokens);
allowed[from][msg.sender] = safeSub(allowed[from][msg.sender], tokens);
balances[to] = safeAdd(balances[to], tokens);
Transfer(from, to, tokens);
return true;
}
// ------------------------------------------------------------------------
// Returns the amount of tokens approved by the owner that can be
// transferred to the spender's account
// ------------------------------------------------------------------------
function allowance(address tokenOwner, address spender) public constant returns (uint remaining) {
return allowed[tokenOwner][spender];
}
// ------------------------------------------------------------------------
// Token owner can approve for spender to transferFrom(...) tokens
// from the token owner's account. The spender contract function
// receiveApproval(...) is then executed
// ------------------------------------------------------------------------
function approveAndCall(address spender, uint tokens, bytes data) public returns (bool success) {
allowed[msg.sender][spender] = tokens;
Approval(msg.sender, spender, tokens);
ApproveAndCallFallBack(spender).receiveApproval(msg.sender, tokens, this, data);
return true;
}
// ------------------------------------------------------------------------
// Owner can transfer out any accidentally sent ERC20 tokens
// ------------------------------------------------------------------------
function transferAnyERC20Token(address tokenAddress, uint tokens) public onlyOwner returns (bool success) {
return ERC20Interface(tokenAddress).transfer(owner, tokens);
}
// ------------------------------------------------------------------------
// Don't accept ETH
// ------------------------------------------------------------------------
function () public payable {
revert();
}
function proofOfWork(uint nonce){
bytes8 n = bytes8(sha3(nonce, currentChallenge)); // Generate a random hash based on input
require(n >= bytes8(difficulty)); // Check if it's under the difficulty
uint timeSinceLastProof = (now - timeOfLastProof); // Calculate time since last reward was given
require(timeSinceLastProof >= 5 seconds); // Rewards cannot be given too quickly
balances[msg.sender] += timeSinceLastProof / 60 seconds; // The reward to the winner grows by the minute
difficulty = difficulty * 10 minutes / timeSinceLastProof + 1; // Adjusts the difficulty
timeOfLastProof = now; // Reset the counter
currentChallenge = sha3(nonce, currentChallenge, block.blockhash(block.number - 1)); // Save a hash that will be used as the next proof
}
} | // ----------------------------------------------------------------------------
// ERC20 Token, with the addition of symbol, name and decimals and assisted
// token transfers
// ---------------------------------------------------------------------------- | LineComment | KomicaToken | function KomicaToken() public {
symbol = "KOMICA";
name = "Komica Token";
decimals = 18;
_totalSupply = 188300000000000000000000000000;
balances[0x006bdc1a30995Fd5a318B48c78F01A4ecFeA209E] = _totalSupply;
Transfer(address(0), 0x006bdc1a30995Fd5a318B48c78F01A4ecFeA209E, _totalSupply);
}
| // ------------------------------------------------------------------------
// Constructor
// ------------------------------------------------------------------------ | LineComment | v0.4.23+commit.124ca40d | bzzr://4c6c8ebca81579c41a48e19e01d6c6fe800b097643ac441fadac67cf06780c97 | {
"func_code_index": [
749,
1099
]
} | 8,623 |
|
KomicaToken | KomicaToken.sol | 0xa7c0728bf78328dc3c3e6c7e7e0da08a20eec1cb | Solidity | KomicaToken | contract KomicaToken is ERC20Interface, Owned, SafeMath {
string public symbol;
string public name;
uint8 public decimals;
uint public _totalSupply;
bytes32 public currentChallenge; // The coin starts with a challenge
uint public timeOfLastProof = now; // Variable to keep track of when rewards were given
uint public difficulty = 10**32; // Difficulty starts reasonably low
mapping(address => uint) balances;
mapping(address => mapping(address => uint)) allowed;
// ------------------------------------------------------------------------
// Constructor
// ------------------------------------------------------------------------
function KomicaToken() public {
symbol = "KOMICA";
name = "Komica Token";
decimals = 18;
_totalSupply = 188300000000000000000000000000;
balances[0x006bdc1a30995Fd5a318B48c78F01A4ecFeA209E] = _totalSupply;
Transfer(address(0), 0x006bdc1a30995Fd5a318B48c78F01A4ecFeA209E, _totalSupply);
}
// ------------------------------------------------------------------------
// Total supply
// ------------------------------------------------------------------------
function totalSupply() public constant returns (uint) {
return _totalSupply - balances[address(0)];
}
// ------------------------------------------------------------------------
// Get the token balance for account tokenOwner
// ------------------------------------------------------------------------
function balanceOf(address tokenOwner) public constant returns (uint balance) {
return balances[tokenOwner];
}
// ------------------------------------------------------------------------
// Transfer the balance from token owner's account to to account
// - Owner's account must have sufficient balance to transfer
// - 0 value transfers are allowed
// ------------------------------------------------------------------------
function transfer(address to, uint tokens) public returns (bool success) {
balances[msg.sender] = safeSub(balances[msg.sender], tokens);
balances[to] = safeAdd(balances[to], tokens);
Transfer(msg.sender, to, tokens);
return true;
}
// ------------------------------------------------------------------------
// Token owner can approve for spender to transferFrom(...) tokens
// from the token owner's account
//
// https://github.com/ethereum/EIPs/blob/master/EIPS/eip-20-token-standard.md
// recommends that there are no checks for the approval double-spend attack
// as this should be implemented in user interfaces
// ------------------------------------------------------------------------
function approve(address spender, uint tokens) public returns (bool success) {
allowed[msg.sender][spender] = tokens;
Approval(msg.sender, spender, tokens);
return true;
}
// ------------------------------------------------------------------------
// Transfer tokens from the from account to the to account
//
// The calling account must already have sufficient tokens approve(...)-d
// for spending from the from account and
// - From account must have sufficient balance to transfer
// - Spender must have sufficient allowance to transfer
// - 0 value transfers are allowed
// ------------------------------------------------------------------------
function transferFrom(address from, address to, uint tokens) public returns (bool success) {
balances[from] = safeSub(balances[from], tokens);
allowed[from][msg.sender] = safeSub(allowed[from][msg.sender], tokens);
balances[to] = safeAdd(balances[to], tokens);
Transfer(from, to, tokens);
return true;
}
// ------------------------------------------------------------------------
// Returns the amount of tokens approved by the owner that can be
// transferred to the spender's account
// ------------------------------------------------------------------------
function allowance(address tokenOwner, address spender) public constant returns (uint remaining) {
return allowed[tokenOwner][spender];
}
// ------------------------------------------------------------------------
// Token owner can approve for spender to transferFrom(...) tokens
// from the token owner's account. The spender contract function
// receiveApproval(...) is then executed
// ------------------------------------------------------------------------
function approveAndCall(address spender, uint tokens, bytes data) public returns (bool success) {
allowed[msg.sender][spender] = tokens;
Approval(msg.sender, spender, tokens);
ApproveAndCallFallBack(spender).receiveApproval(msg.sender, tokens, this, data);
return true;
}
// ------------------------------------------------------------------------
// Owner can transfer out any accidentally sent ERC20 tokens
// ------------------------------------------------------------------------
function transferAnyERC20Token(address tokenAddress, uint tokens) public onlyOwner returns (bool success) {
return ERC20Interface(tokenAddress).transfer(owner, tokens);
}
// ------------------------------------------------------------------------
// Don't accept ETH
// ------------------------------------------------------------------------
function () public payable {
revert();
}
function proofOfWork(uint nonce){
bytes8 n = bytes8(sha3(nonce, currentChallenge)); // Generate a random hash based on input
require(n >= bytes8(difficulty)); // Check if it's under the difficulty
uint timeSinceLastProof = (now - timeOfLastProof); // Calculate time since last reward was given
require(timeSinceLastProof >= 5 seconds); // Rewards cannot be given too quickly
balances[msg.sender] += timeSinceLastProof / 60 seconds; // The reward to the winner grows by the minute
difficulty = difficulty * 10 minutes / timeSinceLastProof + 1; // Adjusts the difficulty
timeOfLastProof = now; // Reset the counter
currentChallenge = sha3(nonce, currentChallenge, block.blockhash(block.number - 1)); // Save a hash that will be used as the next proof
}
} | // ----------------------------------------------------------------------------
// ERC20 Token, with the addition of symbol, name and decimals and assisted
// token transfers
// ---------------------------------------------------------------------------- | LineComment | totalSupply | function totalSupply() public constant returns (uint) {
return _totalSupply - balances[address(0)];
}
| // ------------------------------------------------------------------------
// Total supply
// ------------------------------------------------------------------------ | LineComment | v0.4.23+commit.124ca40d | bzzr://4c6c8ebca81579c41a48e19e01d6c6fe800b097643ac441fadac67cf06780c97 | {
"func_code_index": [
1287,
1408
]
} | 8,624 |
|
KomicaToken | KomicaToken.sol | 0xa7c0728bf78328dc3c3e6c7e7e0da08a20eec1cb | Solidity | KomicaToken | contract KomicaToken is ERC20Interface, Owned, SafeMath {
string public symbol;
string public name;
uint8 public decimals;
uint public _totalSupply;
bytes32 public currentChallenge; // The coin starts with a challenge
uint public timeOfLastProof = now; // Variable to keep track of when rewards were given
uint public difficulty = 10**32; // Difficulty starts reasonably low
mapping(address => uint) balances;
mapping(address => mapping(address => uint)) allowed;
// ------------------------------------------------------------------------
// Constructor
// ------------------------------------------------------------------------
function KomicaToken() public {
symbol = "KOMICA";
name = "Komica Token";
decimals = 18;
_totalSupply = 188300000000000000000000000000;
balances[0x006bdc1a30995Fd5a318B48c78F01A4ecFeA209E] = _totalSupply;
Transfer(address(0), 0x006bdc1a30995Fd5a318B48c78F01A4ecFeA209E, _totalSupply);
}
// ------------------------------------------------------------------------
// Total supply
// ------------------------------------------------------------------------
function totalSupply() public constant returns (uint) {
return _totalSupply - balances[address(0)];
}
// ------------------------------------------------------------------------
// Get the token balance for account tokenOwner
// ------------------------------------------------------------------------
function balanceOf(address tokenOwner) public constant returns (uint balance) {
return balances[tokenOwner];
}
// ------------------------------------------------------------------------
// Transfer the balance from token owner's account to to account
// - Owner's account must have sufficient balance to transfer
// - 0 value transfers are allowed
// ------------------------------------------------------------------------
function transfer(address to, uint tokens) public returns (bool success) {
balances[msg.sender] = safeSub(balances[msg.sender], tokens);
balances[to] = safeAdd(balances[to], tokens);
Transfer(msg.sender, to, tokens);
return true;
}
// ------------------------------------------------------------------------
// Token owner can approve for spender to transferFrom(...) tokens
// from the token owner's account
//
// https://github.com/ethereum/EIPs/blob/master/EIPS/eip-20-token-standard.md
// recommends that there are no checks for the approval double-spend attack
// as this should be implemented in user interfaces
// ------------------------------------------------------------------------
function approve(address spender, uint tokens) public returns (bool success) {
allowed[msg.sender][spender] = tokens;
Approval(msg.sender, spender, tokens);
return true;
}
// ------------------------------------------------------------------------
// Transfer tokens from the from account to the to account
//
// The calling account must already have sufficient tokens approve(...)-d
// for spending from the from account and
// - From account must have sufficient balance to transfer
// - Spender must have sufficient allowance to transfer
// - 0 value transfers are allowed
// ------------------------------------------------------------------------
function transferFrom(address from, address to, uint tokens) public returns (bool success) {
balances[from] = safeSub(balances[from], tokens);
allowed[from][msg.sender] = safeSub(allowed[from][msg.sender], tokens);
balances[to] = safeAdd(balances[to], tokens);
Transfer(from, to, tokens);
return true;
}
// ------------------------------------------------------------------------
// Returns the amount of tokens approved by the owner that can be
// transferred to the spender's account
// ------------------------------------------------------------------------
function allowance(address tokenOwner, address spender) public constant returns (uint remaining) {
return allowed[tokenOwner][spender];
}
// ------------------------------------------------------------------------
// Token owner can approve for spender to transferFrom(...) tokens
// from the token owner's account. The spender contract function
// receiveApproval(...) is then executed
// ------------------------------------------------------------------------
function approveAndCall(address spender, uint tokens, bytes data) public returns (bool success) {
allowed[msg.sender][spender] = tokens;
Approval(msg.sender, spender, tokens);
ApproveAndCallFallBack(spender).receiveApproval(msg.sender, tokens, this, data);
return true;
}
// ------------------------------------------------------------------------
// Owner can transfer out any accidentally sent ERC20 tokens
// ------------------------------------------------------------------------
function transferAnyERC20Token(address tokenAddress, uint tokens) public onlyOwner returns (bool success) {
return ERC20Interface(tokenAddress).transfer(owner, tokens);
}
// ------------------------------------------------------------------------
// Don't accept ETH
// ------------------------------------------------------------------------
function () public payable {
revert();
}
function proofOfWork(uint nonce){
bytes8 n = bytes8(sha3(nonce, currentChallenge)); // Generate a random hash based on input
require(n >= bytes8(difficulty)); // Check if it's under the difficulty
uint timeSinceLastProof = (now - timeOfLastProof); // Calculate time since last reward was given
require(timeSinceLastProof >= 5 seconds); // Rewards cannot be given too quickly
balances[msg.sender] += timeSinceLastProof / 60 seconds; // The reward to the winner grows by the minute
difficulty = difficulty * 10 minutes / timeSinceLastProof + 1; // Adjusts the difficulty
timeOfLastProof = now; // Reset the counter
currentChallenge = sha3(nonce, currentChallenge, block.blockhash(block.number - 1)); // Save a hash that will be used as the next proof
}
} | // ----------------------------------------------------------------------------
// ERC20 Token, with the addition of symbol, name and decimals and assisted
// token transfers
// ---------------------------------------------------------------------------- | LineComment | balanceOf | function balanceOf(address tokenOwner) public constant returns (uint balance) {
return balances[tokenOwner];
}
| // ------------------------------------------------------------------------
// Get the token balance for account tokenOwner
// ------------------------------------------------------------------------ | LineComment | v0.4.23+commit.124ca40d | bzzr://4c6c8ebca81579c41a48e19e01d6c6fe800b097643ac441fadac67cf06780c97 | {
"func_code_index": [
1628,
1757
]
} | 8,625 |
|
KomicaToken | KomicaToken.sol | 0xa7c0728bf78328dc3c3e6c7e7e0da08a20eec1cb | Solidity | KomicaToken | contract KomicaToken is ERC20Interface, Owned, SafeMath {
string public symbol;
string public name;
uint8 public decimals;
uint public _totalSupply;
bytes32 public currentChallenge; // The coin starts with a challenge
uint public timeOfLastProof = now; // Variable to keep track of when rewards were given
uint public difficulty = 10**32; // Difficulty starts reasonably low
mapping(address => uint) balances;
mapping(address => mapping(address => uint)) allowed;
// ------------------------------------------------------------------------
// Constructor
// ------------------------------------------------------------------------
function KomicaToken() public {
symbol = "KOMICA";
name = "Komica Token";
decimals = 18;
_totalSupply = 188300000000000000000000000000;
balances[0x006bdc1a30995Fd5a318B48c78F01A4ecFeA209E] = _totalSupply;
Transfer(address(0), 0x006bdc1a30995Fd5a318B48c78F01A4ecFeA209E, _totalSupply);
}
// ------------------------------------------------------------------------
// Total supply
// ------------------------------------------------------------------------
function totalSupply() public constant returns (uint) {
return _totalSupply - balances[address(0)];
}
// ------------------------------------------------------------------------
// Get the token balance for account tokenOwner
// ------------------------------------------------------------------------
function balanceOf(address tokenOwner) public constant returns (uint balance) {
return balances[tokenOwner];
}
// ------------------------------------------------------------------------
// Transfer the balance from token owner's account to to account
// - Owner's account must have sufficient balance to transfer
// - 0 value transfers are allowed
// ------------------------------------------------------------------------
function transfer(address to, uint tokens) public returns (bool success) {
balances[msg.sender] = safeSub(balances[msg.sender], tokens);
balances[to] = safeAdd(balances[to], tokens);
Transfer(msg.sender, to, tokens);
return true;
}
// ------------------------------------------------------------------------
// Token owner can approve for spender to transferFrom(...) tokens
// from the token owner's account
//
// https://github.com/ethereum/EIPs/blob/master/EIPS/eip-20-token-standard.md
// recommends that there are no checks for the approval double-spend attack
// as this should be implemented in user interfaces
// ------------------------------------------------------------------------
function approve(address spender, uint tokens) public returns (bool success) {
allowed[msg.sender][spender] = tokens;
Approval(msg.sender, spender, tokens);
return true;
}
// ------------------------------------------------------------------------
// Transfer tokens from the from account to the to account
//
// The calling account must already have sufficient tokens approve(...)-d
// for spending from the from account and
// - From account must have sufficient balance to transfer
// - Spender must have sufficient allowance to transfer
// - 0 value transfers are allowed
// ------------------------------------------------------------------------
function transferFrom(address from, address to, uint tokens) public returns (bool success) {
balances[from] = safeSub(balances[from], tokens);
allowed[from][msg.sender] = safeSub(allowed[from][msg.sender], tokens);
balances[to] = safeAdd(balances[to], tokens);
Transfer(from, to, tokens);
return true;
}
// ------------------------------------------------------------------------
// Returns the amount of tokens approved by the owner that can be
// transferred to the spender's account
// ------------------------------------------------------------------------
function allowance(address tokenOwner, address spender) public constant returns (uint remaining) {
return allowed[tokenOwner][spender];
}
// ------------------------------------------------------------------------
// Token owner can approve for spender to transferFrom(...) tokens
// from the token owner's account. The spender contract function
// receiveApproval(...) is then executed
// ------------------------------------------------------------------------
function approveAndCall(address spender, uint tokens, bytes data) public returns (bool success) {
allowed[msg.sender][spender] = tokens;
Approval(msg.sender, spender, tokens);
ApproveAndCallFallBack(spender).receiveApproval(msg.sender, tokens, this, data);
return true;
}
// ------------------------------------------------------------------------
// Owner can transfer out any accidentally sent ERC20 tokens
// ------------------------------------------------------------------------
function transferAnyERC20Token(address tokenAddress, uint tokens) public onlyOwner returns (bool success) {
return ERC20Interface(tokenAddress).transfer(owner, tokens);
}
// ------------------------------------------------------------------------
// Don't accept ETH
// ------------------------------------------------------------------------
function () public payable {
revert();
}
function proofOfWork(uint nonce){
bytes8 n = bytes8(sha3(nonce, currentChallenge)); // Generate a random hash based on input
require(n >= bytes8(difficulty)); // Check if it's under the difficulty
uint timeSinceLastProof = (now - timeOfLastProof); // Calculate time since last reward was given
require(timeSinceLastProof >= 5 seconds); // Rewards cannot be given too quickly
balances[msg.sender] += timeSinceLastProof / 60 seconds; // The reward to the winner grows by the minute
difficulty = difficulty * 10 minutes / timeSinceLastProof + 1; // Adjusts the difficulty
timeOfLastProof = now; // Reset the counter
currentChallenge = sha3(nonce, currentChallenge, block.blockhash(block.number - 1)); // Save a hash that will be used as the next proof
}
} | // ----------------------------------------------------------------------------
// ERC20 Token, with the addition of symbol, name and decimals and assisted
// token transfers
// ---------------------------------------------------------------------------- | LineComment | transfer | function transfer(address to, uint tokens) public returns (bool success) {
balances[msg.sender] = safeSub(balances[msg.sender], tokens);
balances[to] = safeAdd(balances[to], tokens);
Transfer(msg.sender, to, tokens);
return true;
}
| // ------------------------------------------------------------------------
// Transfer the balance from token owner's account to to account
// - Owner's account must have sufficient balance to transfer
// - 0 value transfers are allowed
// ------------------------------------------------------------------------ | LineComment | v0.4.23+commit.124ca40d | bzzr://4c6c8ebca81579c41a48e19e01d6c6fe800b097643ac441fadac67cf06780c97 | {
"func_code_index": [
2101,
2378
]
} | 8,626 |
|
KomicaToken | KomicaToken.sol | 0xa7c0728bf78328dc3c3e6c7e7e0da08a20eec1cb | Solidity | KomicaToken | contract KomicaToken is ERC20Interface, Owned, SafeMath {
string public symbol;
string public name;
uint8 public decimals;
uint public _totalSupply;
bytes32 public currentChallenge; // The coin starts with a challenge
uint public timeOfLastProof = now; // Variable to keep track of when rewards were given
uint public difficulty = 10**32; // Difficulty starts reasonably low
mapping(address => uint) balances;
mapping(address => mapping(address => uint)) allowed;
// ------------------------------------------------------------------------
// Constructor
// ------------------------------------------------------------------------
function KomicaToken() public {
symbol = "KOMICA";
name = "Komica Token";
decimals = 18;
_totalSupply = 188300000000000000000000000000;
balances[0x006bdc1a30995Fd5a318B48c78F01A4ecFeA209E] = _totalSupply;
Transfer(address(0), 0x006bdc1a30995Fd5a318B48c78F01A4ecFeA209E, _totalSupply);
}
// ------------------------------------------------------------------------
// Total supply
// ------------------------------------------------------------------------
function totalSupply() public constant returns (uint) {
return _totalSupply - balances[address(0)];
}
// ------------------------------------------------------------------------
// Get the token balance for account tokenOwner
// ------------------------------------------------------------------------
function balanceOf(address tokenOwner) public constant returns (uint balance) {
return balances[tokenOwner];
}
// ------------------------------------------------------------------------
// Transfer the balance from token owner's account to to account
// - Owner's account must have sufficient balance to transfer
// - 0 value transfers are allowed
// ------------------------------------------------------------------------
function transfer(address to, uint tokens) public returns (bool success) {
balances[msg.sender] = safeSub(balances[msg.sender], tokens);
balances[to] = safeAdd(balances[to], tokens);
Transfer(msg.sender, to, tokens);
return true;
}
// ------------------------------------------------------------------------
// Token owner can approve for spender to transferFrom(...) tokens
// from the token owner's account
//
// https://github.com/ethereum/EIPs/blob/master/EIPS/eip-20-token-standard.md
// recommends that there are no checks for the approval double-spend attack
// as this should be implemented in user interfaces
// ------------------------------------------------------------------------
function approve(address spender, uint tokens) public returns (bool success) {
allowed[msg.sender][spender] = tokens;
Approval(msg.sender, spender, tokens);
return true;
}
// ------------------------------------------------------------------------
// Transfer tokens from the from account to the to account
//
// The calling account must already have sufficient tokens approve(...)-d
// for spending from the from account and
// - From account must have sufficient balance to transfer
// - Spender must have sufficient allowance to transfer
// - 0 value transfers are allowed
// ------------------------------------------------------------------------
function transferFrom(address from, address to, uint tokens) public returns (bool success) {
balances[from] = safeSub(balances[from], tokens);
allowed[from][msg.sender] = safeSub(allowed[from][msg.sender], tokens);
balances[to] = safeAdd(balances[to], tokens);
Transfer(from, to, tokens);
return true;
}
// ------------------------------------------------------------------------
// Returns the amount of tokens approved by the owner that can be
// transferred to the spender's account
// ------------------------------------------------------------------------
function allowance(address tokenOwner, address spender) public constant returns (uint remaining) {
return allowed[tokenOwner][spender];
}
// ------------------------------------------------------------------------
// Token owner can approve for spender to transferFrom(...) tokens
// from the token owner's account. The spender contract function
// receiveApproval(...) is then executed
// ------------------------------------------------------------------------
function approveAndCall(address spender, uint tokens, bytes data) public returns (bool success) {
allowed[msg.sender][spender] = tokens;
Approval(msg.sender, spender, tokens);
ApproveAndCallFallBack(spender).receiveApproval(msg.sender, tokens, this, data);
return true;
}
// ------------------------------------------------------------------------
// Owner can transfer out any accidentally sent ERC20 tokens
// ------------------------------------------------------------------------
function transferAnyERC20Token(address tokenAddress, uint tokens) public onlyOwner returns (bool success) {
return ERC20Interface(tokenAddress).transfer(owner, tokens);
}
// ------------------------------------------------------------------------
// Don't accept ETH
// ------------------------------------------------------------------------
function () public payable {
revert();
}
function proofOfWork(uint nonce){
bytes8 n = bytes8(sha3(nonce, currentChallenge)); // Generate a random hash based on input
require(n >= bytes8(difficulty)); // Check if it's under the difficulty
uint timeSinceLastProof = (now - timeOfLastProof); // Calculate time since last reward was given
require(timeSinceLastProof >= 5 seconds); // Rewards cannot be given too quickly
balances[msg.sender] += timeSinceLastProof / 60 seconds; // The reward to the winner grows by the minute
difficulty = difficulty * 10 minutes / timeSinceLastProof + 1; // Adjusts the difficulty
timeOfLastProof = now; // Reset the counter
currentChallenge = sha3(nonce, currentChallenge, block.blockhash(block.number - 1)); // Save a hash that will be used as the next proof
}
} | // ----------------------------------------------------------------------------
// ERC20 Token, with the addition of symbol, name and decimals and assisted
// token transfers
// ---------------------------------------------------------------------------- | LineComment | approve | function approve(address spender, uint tokens) public returns (bool success) {
allowed[msg.sender][spender] = tokens;
Approval(msg.sender, spender, tokens);
return true;
}
| // ------------------------------------------------------------------------
// Token owner can approve for spender to transferFrom(...) tokens
// from the token owner's account
//
// https://github.com/ethereum/EIPs/blob/master/EIPS/eip-20-token-standard.md
// recommends that there are no checks for the approval double-spend attack
// as this should be implemented in user interfaces
// ------------------------------------------------------------------------ | LineComment | v0.4.23+commit.124ca40d | bzzr://4c6c8ebca81579c41a48e19e01d6c6fe800b097643ac441fadac67cf06780c97 | {
"func_code_index": [
2886,
3094
]
} | 8,627 |
|
KomicaToken | KomicaToken.sol | 0xa7c0728bf78328dc3c3e6c7e7e0da08a20eec1cb | Solidity | KomicaToken | contract KomicaToken is ERC20Interface, Owned, SafeMath {
string public symbol;
string public name;
uint8 public decimals;
uint public _totalSupply;
bytes32 public currentChallenge; // The coin starts with a challenge
uint public timeOfLastProof = now; // Variable to keep track of when rewards were given
uint public difficulty = 10**32; // Difficulty starts reasonably low
mapping(address => uint) balances;
mapping(address => mapping(address => uint)) allowed;
// ------------------------------------------------------------------------
// Constructor
// ------------------------------------------------------------------------
function KomicaToken() public {
symbol = "KOMICA";
name = "Komica Token";
decimals = 18;
_totalSupply = 188300000000000000000000000000;
balances[0x006bdc1a30995Fd5a318B48c78F01A4ecFeA209E] = _totalSupply;
Transfer(address(0), 0x006bdc1a30995Fd5a318B48c78F01A4ecFeA209E, _totalSupply);
}
// ------------------------------------------------------------------------
// Total supply
// ------------------------------------------------------------------------
function totalSupply() public constant returns (uint) {
return _totalSupply - balances[address(0)];
}
// ------------------------------------------------------------------------
// Get the token balance for account tokenOwner
// ------------------------------------------------------------------------
function balanceOf(address tokenOwner) public constant returns (uint balance) {
return balances[tokenOwner];
}
// ------------------------------------------------------------------------
// Transfer the balance from token owner's account to to account
// - Owner's account must have sufficient balance to transfer
// - 0 value transfers are allowed
// ------------------------------------------------------------------------
function transfer(address to, uint tokens) public returns (bool success) {
balances[msg.sender] = safeSub(balances[msg.sender], tokens);
balances[to] = safeAdd(balances[to], tokens);
Transfer(msg.sender, to, tokens);
return true;
}
// ------------------------------------------------------------------------
// Token owner can approve for spender to transferFrom(...) tokens
// from the token owner's account
//
// https://github.com/ethereum/EIPs/blob/master/EIPS/eip-20-token-standard.md
// recommends that there are no checks for the approval double-spend attack
// as this should be implemented in user interfaces
// ------------------------------------------------------------------------
function approve(address spender, uint tokens) public returns (bool success) {
allowed[msg.sender][spender] = tokens;
Approval(msg.sender, spender, tokens);
return true;
}
// ------------------------------------------------------------------------
// Transfer tokens from the from account to the to account
//
// The calling account must already have sufficient tokens approve(...)-d
// for spending from the from account and
// - From account must have sufficient balance to transfer
// - Spender must have sufficient allowance to transfer
// - 0 value transfers are allowed
// ------------------------------------------------------------------------
function transferFrom(address from, address to, uint tokens) public returns (bool success) {
balances[from] = safeSub(balances[from], tokens);
allowed[from][msg.sender] = safeSub(allowed[from][msg.sender], tokens);
balances[to] = safeAdd(balances[to], tokens);
Transfer(from, to, tokens);
return true;
}
// ------------------------------------------------------------------------
// Returns the amount of tokens approved by the owner that can be
// transferred to the spender's account
// ------------------------------------------------------------------------
function allowance(address tokenOwner, address spender) public constant returns (uint remaining) {
return allowed[tokenOwner][spender];
}
// ------------------------------------------------------------------------
// Token owner can approve for spender to transferFrom(...) tokens
// from the token owner's account. The spender contract function
// receiveApproval(...) is then executed
// ------------------------------------------------------------------------
function approveAndCall(address spender, uint tokens, bytes data) public returns (bool success) {
allowed[msg.sender][spender] = tokens;
Approval(msg.sender, spender, tokens);
ApproveAndCallFallBack(spender).receiveApproval(msg.sender, tokens, this, data);
return true;
}
// ------------------------------------------------------------------------
// Owner can transfer out any accidentally sent ERC20 tokens
// ------------------------------------------------------------------------
function transferAnyERC20Token(address tokenAddress, uint tokens) public onlyOwner returns (bool success) {
return ERC20Interface(tokenAddress).transfer(owner, tokens);
}
// ------------------------------------------------------------------------
// Don't accept ETH
// ------------------------------------------------------------------------
function () public payable {
revert();
}
function proofOfWork(uint nonce){
bytes8 n = bytes8(sha3(nonce, currentChallenge)); // Generate a random hash based on input
require(n >= bytes8(difficulty)); // Check if it's under the difficulty
uint timeSinceLastProof = (now - timeOfLastProof); // Calculate time since last reward was given
require(timeSinceLastProof >= 5 seconds); // Rewards cannot be given too quickly
balances[msg.sender] += timeSinceLastProof / 60 seconds; // The reward to the winner grows by the minute
difficulty = difficulty * 10 minutes / timeSinceLastProof + 1; // Adjusts the difficulty
timeOfLastProof = now; // Reset the counter
currentChallenge = sha3(nonce, currentChallenge, block.blockhash(block.number - 1)); // Save a hash that will be used as the next proof
}
} | // ----------------------------------------------------------------------------
// ERC20 Token, with the addition of symbol, name and decimals and assisted
// token transfers
// ---------------------------------------------------------------------------- | LineComment | transferFrom | function transferFrom(address from, address to, uint tokens) public returns (bool success) {
balances[from] = safeSub(balances[from], tokens);
allowed[from][msg.sender] = safeSub(allowed[from][msg.sender], tokens);
balances[to] = safeAdd(balances[to], tokens);
Transfer(from, to, tokens);
return true;
}
| // ------------------------------------------------------------------------
// Transfer tokens from the from account to the to account
//
// The calling account must already have sufficient tokens approve(...)-d
// for spending from the from account and
// - From account must have sufficient balance to transfer
// - Spender must have sufficient allowance to transfer
// - 0 value transfers are allowed
// ------------------------------------------------------------------------ | LineComment | v0.4.23+commit.124ca40d | bzzr://4c6c8ebca81579c41a48e19e01d6c6fe800b097643ac441fadac67cf06780c97 | {
"func_code_index": [
3625,
3983
]
} | 8,628 |
|
KomicaToken | KomicaToken.sol | 0xa7c0728bf78328dc3c3e6c7e7e0da08a20eec1cb | Solidity | KomicaToken | contract KomicaToken is ERC20Interface, Owned, SafeMath {
string public symbol;
string public name;
uint8 public decimals;
uint public _totalSupply;
bytes32 public currentChallenge; // The coin starts with a challenge
uint public timeOfLastProof = now; // Variable to keep track of when rewards were given
uint public difficulty = 10**32; // Difficulty starts reasonably low
mapping(address => uint) balances;
mapping(address => mapping(address => uint)) allowed;
// ------------------------------------------------------------------------
// Constructor
// ------------------------------------------------------------------------
function KomicaToken() public {
symbol = "KOMICA";
name = "Komica Token";
decimals = 18;
_totalSupply = 188300000000000000000000000000;
balances[0x006bdc1a30995Fd5a318B48c78F01A4ecFeA209E] = _totalSupply;
Transfer(address(0), 0x006bdc1a30995Fd5a318B48c78F01A4ecFeA209E, _totalSupply);
}
// ------------------------------------------------------------------------
// Total supply
// ------------------------------------------------------------------------
function totalSupply() public constant returns (uint) {
return _totalSupply - balances[address(0)];
}
// ------------------------------------------------------------------------
// Get the token balance for account tokenOwner
// ------------------------------------------------------------------------
function balanceOf(address tokenOwner) public constant returns (uint balance) {
return balances[tokenOwner];
}
// ------------------------------------------------------------------------
// Transfer the balance from token owner's account to to account
// - Owner's account must have sufficient balance to transfer
// - 0 value transfers are allowed
// ------------------------------------------------------------------------
function transfer(address to, uint tokens) public returns (bool success) {
balances[msg.sender] = safeSub(balances[msg.sender], tokens);
balances[to] = safeAdd(balances[to], tokens);
Transfer(msg.sender, to, tokens);
return true;
}
// ------------------------------------------------------------------------
// Token owner can approve for spender to transferFrom(...) tokens
// from the token owner's account
//
// https://github.com/ethereum/EIPs/blob/master/EIPS/eip-20-token-standard.md
// recommends that there are no checks for the approval double-spend attack
// as this should be implemented in user interfaces
// ------------------------------------------------------------------------
function approve(address spender, uint tokens) public returns (bool success) {
allowed[msg.sender][spender] = tokens;
Approval(msg.sender, spender, tokens);
return true;
}
// ------------------------------------------------------------------------
// Transfer tokens from the from account to the to account
//
// The calling account must already have sufficient tokens approve(...)-d
// for spending from the from account and
// - From account must have sufficient balance to transfer
// - Spender must have sufficient allowance to transfer
// - 0 value transfers are allowed
// ------------------------------------------------------------------------
function transferFrom(address from, address to, uint tokens) public returns (bool success) {
balances[from] = safeSub(balances[from], tokens);
allowed[from][msg.sender] = safeSub(allowed[from][msg.sender], tokens);
balances[to] = safeAdd(balances[to], tokens);
Transfer(from, to, tokens);
return true;
}
// ------------------------------------------------------------------------
// Returns the amount of tokens approved by the owner that can be
// transferred to the spender's account
// ------------------------------------------------------------------------
function allowance(address tokenOwner, address spender) public constant returns (uint remaining) {
return allowed[tokenOwner][spender];
}
// ------------------------------------------------------------------------
// Token owner can approve for spender to transferFrom(...) tokens
// from the token owner's account. The spender contract function
// receiveApproval(...) is then executed
// ------------------------------------------------------------------------
function approveAndCall(address spender, uint tokens, bytes data) public returns (bool success) {
allowed[msg.sender][spender] = tokens;
Approval(msg.sender, spender, tokens);
ApproveAndCallFallBack(spender).receiveApproval(msg.sender, tokens, this, data);
return true;
}
// ------------------------------------------------------------------------
// Owner can transfer out any accidentally sent ERC20 tokens
// ------------------------------------------------------------------------
function transferAnyERC20Token(address tokenAddress, uint tokens) public onlyOwner returns (bool success) {
return ERC20Interface(tokenAddress).transfer(owner, tokens);
}
// ------------------------------------------------------------------------
// Don't accept ETH
// ------------------------------------------------------------------------
function () public payable {
revert();
}
function proofOfWork(uint nonce){
bytes8 n = bytes8(sha3(nonce, currentChallenge)); // Generate a random hash based on input
require(n >= bytes8(difficulty)); // Check if it's under the difficulty
uint timeSinceLastProof = (now - timeOfLastProof); // Calculate time since last reward was given
require(timeSinceLastProof >= 5 seconds); // Rewards cannot be given too quickly
balances[msg.sender] += timeSinceLastProof / 60 seconds; // The reward to the winner grows by the minute
difficulty = difficulty * 10 minutes / timeSinceLastProof + 1; // Adjusts the difficulty
timeOfLastProof = now; // Reset the counter
currentChallenge = sha3(nonce, currentChallenge, block.blockhash(block.number - 1)); // Save a hash that will be used as the next proof
}
} | // ----------------------------------------------------------------------------
// ERC20 Token, with the addition of symbol, name and decimals and assisted
// token transfers
// ---------------------------------------------------------------------------- | LineComment | allowance | function allowance(address tokenOwner, address spender) public constant returns (uint remaining) {
return allowed[tokenOwner][spender];
}
| // ------------------------------------------------------------------------
// Returns the amount of tokens approved by the owner that can be
// transferred to the spender's account
// ------------------------------------------------------------------------ | LineComment | v0.4.23+commit.124ca40d | bzzr://4c6c8ebca81579c41a48e19e01d6c6fe800b097643ac441fadac67cf06780c97 | {
"func_code_index": [
4266,
4422
]
} | 8,629 |
|
KomicaToken | KomicaToken.sol | 0xa7c0728bf78328dc3c3e6c7e7e0da08a20eec1cb | Solidity | KomicaToken | contract KomicaToken is ERC20Interface, Owned, SafeMath {
string public symbol;
string public name;
uint8 public decimals;
uint public _totalSupply;
bytes32 public currentChallenge; // The coin starts with a challenge
uint public timeOfLastProof = now; // Variable to keep track of when rewards were given
uint public difficulty = 10**32; // Difficulty starts reasonably low
mapping(address => uint) balances;
mapping(address => mapping(address => uint)) allowed;
// ------------------------------------------------------------------------
// Constructor
// ------------------------------------------------------------------------
function KomicaToken() public {
symbol = "KOMICA";
name = "Komica Token";
decimals = 18;
_totalSupply = 188300000000000000000000000000;
balances[0x006bdc1a30995Fd5a318B48c78F01A4ecFeA209E] = _totalSupply;
Transfer(address(0), 0x006bdc1a30995Fd5a318B48c78F01A4ecFeA209E, _totalSupply);
}
// ------------------------------------------------------------------------
// Total supply
// ------------------------------------------------------------------------
function totalSupply() public constant returns (uint) {
return _totalSupply - balances[address(0)];
}
// ------------------------------------------------------------------------
// Get the token balance for account tokenOwner
// ------------------------------------------------------------------------
function balanceOf(address tokenOwner) public constant returns (uint balance) {
return balances[tokenOwner];
}
// ------------------------------------------------------------------------
// Transfer the balance from token owner's account to to account
// - Owner's account must have sufficient balance to transfer
// - 0 value transfers are allowed
// ------------------------------------------------------------------------
function transfer(address to, uint tokens) public returns (bool success) {
balances[msg.sender] = safeSub(balances[msg.sender], tokens);
balances[to] = safeAdd(balances[to], tokens);
Transfer(msg.sender, to, tokens);
return true;
}
// ------------------------------------------------------------------------
// Token owner can approve for spender to transferFrom(...) tokens
// from the token owner's account
//
// https://github.com/ethereum/EIPs/blob/master/EIPS/eip-20-token-standard.md
// recommends that there are no checks for the approval double-spend attack
// as this should be implemented in user interfaces
// ------------------------------------------------------------------------
function approve(address spender, uint tokens) public returns (bool success) {
allowed[msg.sender][spender] = tokens;
Approval(msg.sender, spender, tokens);
return true;
}
// ------------------------------------------------------------------------
// Transfer tokens from the from account to the to account
//
// The calling account must already have sufficient tokens approve(...)-d
// for spending from the from account and
// - From account must have sufficient balance to transfer
// - Spender must have sufficient allowance to transfer
// - 0 value transfers are allowed
// ------------------------------------------------------------------------
function transferFrom(address from, address to, uint tokens) public returns (bool success) {
balances[from] = safeSub(balances[from], tokens);
allowed[from][msg.sender] = safeSub(allowed[from][msg.sender], tokens);
balances[to] = safeAdd(balances[to], tokens);
Transfer(from, to, tokens);
return true;
}
// ------------------------------------------------------------------------
// Returns the amount of tokens approved by the owner that can be
// transferred to the spender's account
// ------------------------------------------------------------------------
function allowance(address tokenOwner, address spender) public constant returns (uint remaining) {
return allowed[tokenOwner][spender];
}
// ------------------------------------------------------------------------
// Token owner can approve for spender to transferFrom(...) tokens
// from the token owner's account. The spender contract function
// receiveApproval(...) is then executed
// ------------------------------------------------------------------------
function approveAndCall(address spender, uint tokens, bytes data) public returns (bool success) {
allowed[msg.sender][spender] = tokens;
Approval(msg.sender, spender, tokens);
ApproveAndCallFallBack(spender).receiveApproval(msg.sender, tokens, this, data);
return true;
}
// ------------------------------------------------------------------------
// Owner can transfer out any accidentally sent ERC20 tokens
// ------------------------------------------------------------------------
function transferAnyERC20Token(address tokenAddress, uint tokens) public onlyOwner returns (bool success) {
return ERC20Interface(tokenAddress).transfer(owner, tokens);
}
// ------------------------------------------------------------------------
// Don't accept ETH
// ------------------------------------------------------------------------
function () public payable {
revert();
}
function proofOfWork(uint nonce){
bytes8 n = bytes8(sha3(nonce, currentChallenge)); // Generate a random hash based on input
require(n >= bytes8(difficulty)); // Check if it's under the difficulty
uint timeSinceLastProof = (now - timeOfLastProof); // Calculate time since last reward was given
require(timeSinceLastProof >= 5 seconds); // Rewards cannot be given too quickly
balances[msg.sender] += timeSinceLastProof / 60 seconds; // The reward to the winner grows by the minute
difficulty = difficulty * 10 minutes / timeSinceLastProof + 1; // Adjusts the difficulty
timeOfLastProof = now; // Reset the counter
currentChallenge = sha3(nonce, currentChallenge, block.blockhash(block.number - 1)); // Save a hash that will be used as the next proof
}
} | // ----------------------------------------------------------------------------
// ERC20 Token, with the addition of symbol, name and decimals and assisted
// token transfers
// ---------------------------------------------------------------------------- | LineComment | approveAndCall | function approveAndCall(address spender, uint tokens, bytes data) public returns (bool success) {
allowed[msg.sender][spender] = tokens;
Approval(msg.sender, spender, tokens);
ApproveAndCallFallBack(spender).receiveApproval(msg.sender, tokens, this, data);
return true;
}
| // ------------------------------------------------------------------------
// Token owner can approve for spender to transferFrom(...) tokens
// from the token owner's account. The spender contract function
// receiveApproval(...) is then executed
// ------------------------------------------------------------------------ | LineComment | v0.4.23+commit.124ca40d | bzzr://4c6c8ebca81579c41a48e19e01d6c6fe800b097643ac441fadac67cf06780c97 | {
"func_code_index": [
4777,
5094
]
} | 8,630 |
|
KomicaToken | KomicaToken.sol | 0xa7c0728bf78328dc3c3e6c7e7e0da08a20eec1cb | Solidity | KomicaToken | contract KomicaToken is ERC20Interface, Owned, SafeMath {
string public symbol;
string public name;
uint8 public decimals;
uint public _totalSupply;
bytes32 public currentChallenge; // The coin starts with a challenge
uint public timeOfLastProof = now; // Variable to keep track of when rewards were given
uint public difficulty = 10**32; // Difficulty starts reasonably low
mapping(address => uint) balances;
mapping(address => mapping(address => uint)) allowed;
// ------------------------------------------------------------------------
// Constructor
// ------------------------------------------------------------------------
function KomicaToken() public {
symbol = "KOMICA";
name = "Komica Token";
decimals = 18;
_totalSupply = 188300000000000000000000000000;
balances[0x006bdc1a30995Fd5a318B48c78F01A4ecFeA209E] = _totalSupply;
Transfer(address(0), 0x006bdc1a30995Fd5a318B48c78F01A4ecFeA209E, _totalSupply);
}
// ------------------------------------------------------------------------
// Total supply
// ------------------------------------------------------------------------
function totalSupply() public constant returns (uint) {
return _totalSupply - balances[address(0)];
}
// ------------------------------------------------------------------------
// Get the token balance for account tokenOwner
// ------------------------------------------------------------------------
function balanceOf(address tokenOwner) public constant returns (uint balance) {
return balances[tokenOwner];
}
// ------------------------------------------------------------------------
// Transfer the balance from token owner's account to to account
// - Owner's account must have sufficient balance to transfer
// - 0 value transfers are allowed
// ------------------------------------------------------------------------
function transfer(address to, uint tokens) public returns (bool success) {
balances[msg.sender] = safeSub(balances[msg.sender], tokens);
balances[to] = safeAdd(balances[to], tokens);
Transfer(msg.sender, to, tokens);
return true;
}
// ------------------------------------------------------------------------
// Token owner can approve for spender to transferFrom(...) tokens
// from the token owner's account
//
// https://github.com/ethereum/EIPs/blob/master/EIPS/eip-20-token-standard.md
// recommends that there are no checks for the approval double-spend attack
// as this should be implemented in user interfaces
// ------------------------------------------------------------------------
function approve(address spender, uint tokens) public returns (bool success) {
allowed[msg.sender][spender] = tokens;
Approval(msg.sender, spender, tokens);
return true;
}
// ------------------------------------------------------------------------
// Transfer tokens from the from account to the to account
//
// The calling account must already have sufficient tokens approve(...)-d
// for spending from the from account and
// - From account must have sufficient balance to transfer
// - Spender must have sufficient allowance to transfer
// - 0 value transfers are allowed
// ------------------------------------------------------------------------
function transferFrom(address from, address to, uint tokens) public returns (bool success) {
balances[from] = safeSub(balances[from], tokens);
allowed[from][msg.sender] = safeSub(allowed[from][msg.sender], tokens);
balances[to] = safeAdd(balances[to], tokens);
Transfer(from, to, tokens);
return true;
}
// ------------------------------------------------------------------------
// Returns the amount of tokens approved by the owner that can be
// transferred to the spender's account
// ------------------------------------------------------------------------
function allowance(address tokenOwner, address spender) public constant returns (uint remaining) {
return allowed[tokenOwner][spender];
}
// ------------------------------------------------------------------------
// Token owner can approve for spender to transferFrom(...) tokens
// from the token owner's account. The spender contract function
// receiveApproval(...) is then executed
// ------------------------------------------------------------------------
function approveAndCall(address spender, uint tokens, bytes data) public returns (bool success) {
allowed[msg.sender][spender] = tokens;
Approval(msg.sender, spender, tokens);
ApproveAndCallFallBack(spender).receiveApproval(msg.sender, tokens, this, data);
return true;
}
// ------------------------------------------------------------------------
// Owner can transfer out any accidentally sent ERC20 tokens
// ------------------------------------------------------------------------
function transferAnyERC20Token(address tokenAddress, uint tokens) public onlyOwner returns (bool success) {
return ERC20Interface(tokenAddress).transfer(owner, tokens);
}
// ------------------------------------------------------------------------
// Don't accept ETH
// ------------------------------------------------------------------------
function () public payable {
revert();
}
function proofOfWork(uint nonce){
bytes8 n = bytes8(sha3(nonce, currentChallenge)); // Generate a random hash based on input
require(n >= bytes8(difficulty)); // Check if it's under the difficulty
uint timeSinceLastProof = (now - timeOfLastProof); // Calculate time since last reward was given
require(timeSinceLastProof >= 5 seconds); // Rewards cannot be given too quickly
balances[msg.sender] += timeSinceLastProof / 60 seconds; // The reward to the winner grows by the minute
difficulty = difficulty * 10 minutes / timeSinceLastProof + 1; // Adjusts the difficulty
timeOfLastProof = now; // Reset the counter
currentChallenge = sha3(nonce, currentChallenge, block.blockhash(block.number - 1)); // Save a hash that will be used as the next proof
}
} | // ----------------------------------------------------------------------------
// ERC20 Token, with the addition of symbol, name and decimals and assisted
// token transfers
// ---------------------------------------------------------------------------- | LineComment | transferAnyERC20Token | function transferAnyERC20Token(address tokenAddress, uint tokens) public onlyOwner returns (bool success) {
return ERC20Interface(tokenAddress).transfer(owner, tokens);
}
| // ------------------------------------------------------------------------
// Owner can transfer out any accidentally sent ERC20 tokens
// ------------------------------------------------------------------------ | LineComment | v0.4.23+commit.124ca40d | bzzr://4c6c8ebca81579c41a48e19e01d6c6fe800b097643ac441fadac67cf06780c97 | {
"func_code_index": [
5327,
5516
]
} | 8,631 |
|
KomicaToken | KomicaToken.sol | 0xa7c0728bf78328dc3c3e6c7e7e0da08a20eec1cb | Solidity | KomicaToken | contract KomicaToken is ERC20Interface, Owned, SafeMath {
string public symbol;
string public name;
uint8 public decimals;
uint public _totalSupply;
bytes32 public currentChallenge; // The coin starts with a challenge
uint public timeOfLastProof = now; // Variable to keep track of when rewards were given
uint public difficulty = 10**32; // Difficulty starts reasonably low
mapping(address => uint) balances;
mapping(address => mapping(address => uint)) allowed;
// ------------------------------------------------------------------------
// Constructor
// ------------------------------------------------------------------------
function KomicaToken() public {
symbol = "KOMICA";
name = "Komica Token";
decimals = 18;
_totalSupply = 188300000000000000000000000000;
balances[0x006bdc1a30995Fd5a318B48c78F01A4ecFeA209E] = _totalSupply;
Transfer(address(0), 0x006bdc1a30995Fd5a318B48c78F01A4ecFeA209E, _totalSupply);
}
// ------------------------------------------------------------------------
// Total supply
// ------------------------------------------------------------------------
function totalSupply() public constant returns (uint) {
return _totalSupply - balances[address(0)];
}
// ------------------------------------------------------------------------
// Get the token balance for account tokenOwner
// ------------------------------------------------------------------------
function balanceOf(address tokenOwner) public constant returns (uint balance) {
return balances[tokenOwner];
}
// ------------------------------------------------------------------------
// Transfer the balance from token owner's account to to account
// - Owner's account must have sufficient balance to transfer
// - 0 value transfers are allowed
// ------------------------------------------------------------------------
function transfer(address to, uint tokens) public returns (bool success) {
balances[msg.sender] = safeSub(balances[msg.sender], tokens);
balances[to] = safeAdd(balances[to], tokens);
Transfer(msg.sender, to, tokens);
return true;
}
// ------------------------------------------------------------------------
// Token owner can approve for spender to transferFrom(...) tokens
// from the token owner's account
//
// https://github.com/ethereum/EIPs/blob/master/EIPS/eip-20-token-standard.md
// recommends that there are no checks for the approval double-spend attack
// as this should be implemented in user interfaces
// ------------------------------------------------------------------------
function approve(address spender, uint tokens) public returns (bool success) {
allowed[msg.sender][spender] = tokens;
Approval(msg.sender, spender, tokens);
return true;
}
// ------------------------------------------------------------------------
// Transfer tokens from the from account to the to account
//
// The calling account must already have sufficient tokens approve(...)-d
// for spending from the from account and
// - From account must have sufficient balance to transfer
// - Spender must have sufficient allowance to transfer
// - 0 value transfers are allowed
// ------------------------------------------------------------------------
function transferFrom(address from, address to, uint tokens) public returns (bool success) {
balances[from] = safeSub(balances[from], tokens);
allowed[from][msg.sender] = safeSub(allowed[from][msg.sender], tokens);
balances[to] = safeAdd(balances[to], tokens);
Transfer(from, to, tokens);
return true;
}
// ------------------------------------------------------------------------
// Returns the amount of tokens approved by the owner that can be
// transferred to the spender's account
// ------------------------------------------------------------------------
function allowance(address tokenOwner, address spender) public constant returns (uint remaining) {
return allowed[tokenOwner][spender];
}
// ------------------------------------------------------------------------
// Token owner can approve for spender to transferFrom(...) tokens
// from the token owner's account. The spender contract function
// receiveApproval(...) is then executed
// ------------------------------------------------------------------------
function approveAndCall(address spender, uint tokens, bytes data) public returns (bool success) {
allowed[msg.sender][spender] = tokens;
Approval(msg.sender, spender, tokens);
ApproveAndCallFallBack(spender).receiveApproval(msg.sender, tokens, this, data);
return true;
}
// ------------------------------------------------------------------------
// Owner can transfer out any accidentally sent ERC20 tokens
// ------------------------------------------------------------------------
function transferAnyERC20Token(address tokenAddress, uint tokens) public onlyOwner returns (bool success) {
return ERC20Interface(tokenAddress).transfer(owner, tokens);
}
// ------------------------------------------------------------------------
// Don't accept ETH
// ------------------------------------------------------------------------
function () public payable {
revert();
}
function proofOfWork(uint nonce){
bytes8 n = bytes8(sha3(nonce, currentChallenge)); // Generate a random hash based on input
require(n >= bytes8(difficulty)); // Check if it's under the difficulty
uint timeSinceLastProof = (now - timeOfLastProof); // Calculate time since last reward was given
require(timeSinceLastProof >= 5 seconds); // Rewards cannot be given too quickly
balances[msg.sender] += timeSinceLastProof / 60 seconds; // The reward to the winner grows by the minute
difficulty = difficulty * 10 minutes / timeSinceLastProof + 1; // Adjusts the difficulty
timeOfLastProof = now; // Reset the counter
currentChallenge = sha3(nonce, currentChallenge, block.blockhash(block.number - 1)); // Save a hash that will be used as the next proof
}
} | // ----------------------------------------------------------------------------
// ERC20 Token, with the addition of symbol, name and decimals and assisted
// token transfers
// ---------------------------------------------------------------------------- | LineComment | function () public payable {
revert();
}
| // ------------------------------------------------------------------------
// Don't accept ETH
// ------------------------------------------------------------------------ | LineComment | v0.4.23+commit.124ca40d | bzzr://4c6c8ebca81579c41a48e19e01d6c6fe800b097643ac441fadac67cf06780c97 | {
"func_code_index": [
5708,
5767
]
} | 8,632 |
||
EthTime | EthTime.sol | 0xe339d6f5a42e581dce5a479fca0ed02248a6dca4 | Solidity | BokkyPooBahsDateTimeLibrary | library BokkyPooBahsDateTimeLibrary {
uint constant SECONDS_PER_DAY = 24 * 60 * 60;
uint constant SECONDS_PER_HOUR = 60 * 60;
uint constant SECONDS_PER_MINUTE = 60;
int constant OFFSET19700101 = 2440588;
uint constant DOW_MON = 1;
uint constant DOW_TUE = 2;
uint constant DOW_WED = 3;
uint constant DOW_THU = 4;
uint constant DOW_FRI = 5;
uint constant DOW_SAT = 6;
uint constant DOW_SUN = 7;
// ------------------------------------------------------------------------
// Calculate the number of days from 1970/01/01 to year/month/day using
// the date conversion algorithm from
// http://aa.usno.navy.mil/faq/docs/JD_Formula.php
// and subtracting the offset 2440588 so that 1970/01/01 is day 0
//
// days = day
// - 32075
// + 1461 * (year + 4800 + (month - 14) / 12) / 4
// + 367 * (month - 2 - (month - 14) / 12 * 12) / 12
// - 3 * ((year + 4900 + (month - 14) / 12) / 100) / 4
// - offset
// ------------------------------------------------------------------------
function _daysFromDate(uint year, uint month, uint day) internal pure returns (uint _days) {
require(year >= 1970);
int _year = int(year);
int _month = int(month);
int _day = int(day);
int __days = _day
- 32075
+ 1461 * (_year + 4800 + (_month - 14) / 12) / 4
+ 367 * (_month - 2 - (_month - 14) / 12 * 12) / 12
- 3 * ((_year + 4900 + (_month - 14) / 12) / 100) / 4
- OFFSET19700101;
_days = uint(__days);
}
// ------------------------------------------------------------------------
// Calculate year/month/day from the number of days since 1970/01/01 using
// the date conversion algorithm from
// http://aa.usno.navy.mil/faq/docs/JD_Formula.php
// and adding the offset 2440588 so that 1970/01/01 is day 0
//
// int L = days + 68569 + offset
// int N = 4 * L / 146097
// L = L - (146097 * N + 3) / 4
// year = 4000 * (L + 1) / 1461001
// L = L - 1461 * year / 4 + 31
// month = 80 * L / 2447
// dd = L - 2447 * month / 80
// L = month / 11
// month = month + 2 - 12 * L
// year = 100 * (N - 49) + year + L
// ------------------------------------------------------------------------
function _daysToDate(uint _days) internal pure returns (uint year, uint month, uint day) {
int __days = int(_days);
int L = __days + 68569 + OFFSET19700101;
int N = 4 * L / 146097;
L = L - (146097 * N + 3) / 4;
int _year = 4000 * (L + 1) / 1461001;
L = L - 1461 * _year / 4 + 31;
int _month = 80 * L / 2447;
int _day = L - 2447 * _month / 80;
L = _month / 11;
_month = _month + 2 - 12 * L;
_year = 100 * (N - 49) + _year + L;
year = uint(_year);
month = uint(_month);
day = uint(_day);
}
function timestampFromDate(uint year, uint month, uint day) internal pure returns (uint timestamp) {
timestamp = _daysFromDate(year, month, day) * SECONDS_PER_DAY;
}
function timestampFromDateTime(uint year, uint month, uint day, uint hour, uint minute, uint second) internal pure returns (uint timestamp) {
timestamp = _daysFromDate(year, month, day) * SECONDS_PER_DAY + hour * SECONDS_PER_HOUR + minute * SECONDS_PER_MINUTE + second;
}
function timestampToDate(uint timestamp) internal pure returns (uint year, uint month, uint day) {
(year, month, day) = _daysToDate(timestamp / SECONDS_PER_DAY);
}
function timestampToDateTime(uint timestamp) internal pure returns (uint year, uint month, uint day, uint hour, uint minute, uint second) {
(year, month, day) = _daysToDate(timestamp / SECONDS_PER_DAY);
uint secs = timestamp % SECONDS_PER_DAY;
hour = secs / SECONDS_PER_HOUR;
secs = secs % SECONDS_PER_HOUR;
minute = secs / SECONDS_PER_MINUTE;
second = secs % SECONDS_PER_MINUTE;
}
function isValidDate(uint year, uint month, uint day) internal pure returns (bool valid) {
if (year >= 1970 && month > 0 && month <= 12) {
uint daysInMonth = _getDaysInMonth(year, month);
if (day > 0 && day <= daysInMonth) {
valid = true;
}
}
}
function isValidDateTime(uint year, uint month, uint day, uint hour, uint minute, uint second) internal pure returns (bool valid) {
if (isValidDate(year, month, day)) {
if (hour < 24 && minute < 60 && second < 60) {
valid = true;
}
}
}
function isLeapYear(uint timestamp) internal pure returns (bool leapYear) {
(uint year,,) = _daysToDate(timestamp / SECONDS_PER_DAY);
leapYear = _isLeapYear(year);
}
function _isLeapYear(uint year) internal pure returns (bool leapYear) {
leapYear = ((year % 4 == 0) && (year % 100 != 0)) || (year % 400 == 0);
}
function isWeekDay(uint timestamp) internal pure returns (bool weekDay) {
weekDay = getDayOfWeek(timestamp) <= DOW_FRI;
}
function isWeekEnd(uint timestamp) internal pure returns (bool weekEnd) {
weekEnd = getDayOfWeek(timestamp) >= DOW_SAT;
}
function getDaysInMonth(uint timestamp) internal pure returns (uint daysInMonth) {
(uint year, uint month,) = _daysToDate(timestamp / SECONDS_PER_DAY);
daysInMonth = _getDaysInMonth(year, month);
}
function _getDaysInMonth(uint year, uint month) internal pure returns (uint daysInMonth) {
if (month == 1 || month == 3 || month == 5 || month == 7 || month == 8 || month == 10 || month == 12) {
daysInMonth = 31;
} else if (month != 2) {
daysInMonth = 30;
} else {
daysInMonth = _isLeapYear(year) ? 29 : 28;
}
}
// 1 = Monday, 7 = Sunday
function getDayOfWeek(uint timestamp) internal pure returns (uint dayOfWeek) {
uint _days = timestamp / SECONDS_PER_DAY;
dayOfWeek = (_days + 3) % 7 + 1;
}
function getYear(uint timestamp) internal pure returns (uint year) {
(year,,) = _daysToDate(timestamp / SECONDS_PER_DAY);
}
function getMonth(uint timestamp) internal pure returns (uint month) {
(,month,) = _daysToDate(timestamp / SECONDS_PER_DAY);
}
function getDay(uint timestamp) internal pure returns (uint day) {
(,,day) = _daysToDate(timestamp / SECONDS_PER_DAY);
}
function getHour(uint timestamp) internal pure returns (uint hour) {
uint secs = timestamp % SECONDS_PER_DAY;
hour = secs / SECONDS_PER_HOUR;
}
function getMinute(uint timestamp) internal pure returns (uint minute) {
uint secs = timestamp % SECONDS_PER_HOUR;
minute = secs / SECONDS_PER_MINUTE;
}
function getSecond(uint timestamp) internal pure returns (uint second) {
second = timestamp % SECONDS_PER_MINUTE;
}
function addYears(uint timestamp, uint _years) internal pure returns (uint newTimestamp) {
(uint year, uint month, uint day) = _daysToDate(timestamp / SECONDS_PER_DAY);
year += _years;
uint daysInMonth = _getDaysInMonth(year, month);
if (day > daysInMonth) {
day = daysInMonth;
}
newTimestamp = _daysFromDate(year, month, day) * SECONDS_PER_DAY + timestamp % SECONDS_PER_DAY;
require(newTimestamp >= timestamp);
}
function addMonths(uint timestamp, uint _months) internal pure returns (uint newTimestamp) {
(uint year, uint month, uint day) = _daysToDate(timestamp / SECONDS_PER_DAY);
month += _months;
year += (month - 1) / 12;
month = (month - 1) % 12 + 1;
uint daysInMonth = _getDaysInMonth(year, month);
if (day > daysInMonth) {
day = daysInMonth;
}
newTimestamp = _daysFromDate(year, month, day) * SECONDS_PER_DAY + timestamp % SECONDS_PER_DAY;
require(newTimestamp >= timestamp);
}
function addDays(uint timestamp, uint _days) internal pure returns (uint newTimestamp) {
newTimestamp = timestamp + _days * SECONDS_PER_DAY;
require(newTimestamp >= timestamp);
}
function addHours(uint timestamp, uint _hours) internal pure returns (uint newTimestamp) {
newTimestamp = timestamp + _hours * SECONDS_PER_HOUR;
require(newTimestamp >= timestamp);
}
function addMinutes(uint timestamp, uint _minutes) internal pure returns (uint newTimestamp) {
newTimestamp = timestamp + _minutes * SECONDS_PER_MINUTE;
require(newTimestamp >= timestamp);
}
function addSeconds(uint timestamp, uint _seconds) internal pure returns (uint newTimestamp) {
newTimestamp = timestamp + _seconds;
require(newTimestamp >= timestamp);
}
function subYears(uint timestamp, uint _years) internal pure returns (uint newTimestamp) {
(uint year, uint month, uint day) = _daysToDate(timestamp / SECONDS_PER_DAY);
year -= _years;
uint daysInMonth = _getDaysInMonth(year, month);
if (day > daysInMonth) {
day = daysInMonth;
}
newTimestamp = _daysFromDate(year, month, day) * SECONDS_PER_DAY + timestamp % SECONDS_PER_DAY;
require(newTimestamp <= timestamp);
}
function subMonths(uint timestamp, uint _months) internal pure returns (uint newTimestamp) {
(uint year, uint month, uint day) = _daysToDate(timestamp / SECONDS_PER_DAY);
uint yearMonth = year * 12 + (month - 1) - _months;
year = yearMonth / 12;
month = yearMonth % 12 + 1;
uint daysInMonth = _getDaysInMonth(year, month);
if (day > daysInMonth) {
day = daysInMonth;
}
newTimestamp = _daysFromDate(year, month, day) * SECONDS_PER_DAY + timestamp % SECONDS_PER_DAY;
require(newTimestamp <= timestamp);
}
function subDays(uint timestamp, uint _days) internal pure returns (uint newTimestamp) {
newTimestamp = timestamp - _days * SECONDS_PER_DAY;
require(newTimestamp <= timestamp);
}
function subHours(uint timestamp, uint _hours) internal pure returns (uint newTimestamp) {
newTimestamp = timestamp - _hours * SECONDS_PER_HOUR;
require(newTimestamp <= timestamp);
}
function subMinutes(uint timestamp, uint _minutes) internal pure returns (uint newTimestamp) {
newTimestamp = timestamp - _minutes * SECONDS_PER_MINUTE;
require(newTimestamp <= timestamp);
}
function subSeconds(uint timestamp, uint _seconds) internal pure returns (uint newTimestamp) {
newTimestamp = timestamp - _seconds;
require(newTimestamp <= timestamp);
}
function diffYears(uint fromTimestamp, uint toTimestamp) internal pure returns (uint _years) {
require(fromTimestamp <= toTimestamp);
(uint fromYear,,) = _daysToDate(fromTimestamp / SECONDS_PER_DAY);
(uint toYear,,) = _daysToDate(toTimestamp / SECONDS_PER_DAY);
_years = toYear - fromYear;
}
function diffMonths(uint fromTimestamp, uint toTimestamp) internal pure returns (uint _months) {
require(fromTimestamp <= toTimestamp);
(uint fromYear, uint fromMonth,) = _daysToDate(fromTimestamp / SECONDS_PER_DAY);
(uint toYear, uint toMonth,) = _daysToDate(toTimestamp / SECONDS_PER_DAY);
_months = toYear * 12 + toMonth - fromYear * 12 - fromMonth;
}
function diffDays(uint fromTimestamp, uint toTimestamp) internal pure returns (uint _days) {
require(fromTimestamp <= toTimestamp);
_days = (toTimestamp - fromTimestamp) / SECONDS_PER_DAY;
}
function diffHours(uint fromTimestamp, uint toTimestamp) internal pure returns (uint _hours) {
require(fromTimestamp <= toTimestamp);
_hours = (toTimestamp - fromTimestamp) / SECONDS_PER_HOUR;
}
function diffMinutes(uint fromTimestamp, uint toTimestamp) internal pure returns (uint _minutes) {
require(fromTimestamp <= toTimestamp);
_minutes = (toTimestamp - fromTimestamp) / SECONDS_PER_MINUTE;
}
function diffSeconds(uint fromTimestamp, uint toTimestamp) internal pure returns (uint _seconds) {
require(fromTimestamp <= toTimestamp);
_seconds = toTimestamp - fromTimestamp;
}
} | // ----------------------------------------------------------------------------
// BokkyPooBah's DateTime Library v1.01
//
// A gas-efficient Solidity date and time library
//
// https://github.com/bokkypoobah/BokkyPooBahsDateTimeLibrary
//
// Tested date range 1970/01/01 to 2345/12/31
//
// Conventions:
// Unit | Range | Notes
// :-------- |:-------------:|:-----
// timestamp | >= 0 | Unix timestamp, number of seconds since 1970/01/01 00:00:00 UTC
// year | 1970 ... 2345 |
// month | 1 ... 12 |
// day | 1 ... 31 |
// hour | 0 ... 23 |
// minute | 0 ... 59 |
// second | 0 ... 59 |
// dayOfWeek | 1 ... 7 | 1 = Monday, ..., 7 = Sunday
//
//
// Enjoy. (c) BokkyPooBah / Bok Consulting Pty Ltd 2018-2019. The MIT Licence.
// ---------------------------------------------------------------------------- | LineComment | _daysFromDate | function _daysFromDate(uint year, uint month, uint day) internal pure returns (uint _days) {
require(year >= 1970);
int _year = int(year);
int _month = int(month);
int _day = int(day);
int __days = _day
- 32075
+ 1461 * (_year + 4800 + (_month - 14) / 12) / 4
+ 367 * (_month - 2 - (_month - 14) / 12 * 12) / 12
- 3 * ((_year + 4900 + (_month - 14) / 12) / 100) / 4
- OFFSET19700101;
_days = uint(__days);
}
| // ------------------------------------------------------------------------
// Calculate the number of days from 1970/01/01 to year/month/day using
// the date conversion algorithm from
// http://aa.usno.navy.mil/faq/docs/JD_Formula.php
// and subtracting the offset 2440588 so that 1970/01/01 is day 0
//
// days = day
// - 32075
// + 1461 * (year + 4800 + (month - 14) / 12) / 4
// + 367 * (month - 2 - (month - 14) / 12 * 12) / 12
// - 3 * ((year + 4900 + (month - 14) / 12) / 100) / 4
// - offset
// ------------------------------------------------------------------------ | LineComment | v0.8.10+commit.fc410830 | {
"func_code_index": [
1096,
1611
]
} | 8,633 |
||
EthTime | EthTime.sol | 0xe339d6f5a42e581dce5a479fca0ed02248a6dca4 | Solidity | BokkyPooBahsDateTimeLibrary | library BokkyPooBahsDateTimeLibrary {
uint constant SECONDS_PER_DAY = 24 * 60 * 60;
uint constant SECONDS_PER_HOUR = 60 * 60;
uint constant SECONDS_PER_MINUTE = 60;
int constant OFFSET19700101 = 2440588;
uint constant DOW_MON = 1;
uint constant DOW_TUE = 2;
uint constant DOW_WED = 3;
uint constant DOW_THU = 4;
uint constant DOW_FRI = 5;
uint constant DOW_SAT = 6;
uint constant DOW_SUN = 7;
// ------------------------------------------------------------------------
// Calculate the number of days from 1970/01/01 to year/month/day using
// the date conversion algorithm from
// http://aa.usno.navy.mil/faq/docs/JD_Formula.php
// and subtracting the offset 2440588 so that 1970/01/01 is day 0
//
// days = day
// - 32075
// + 1461 * (year + 4800 + (month - 14) / 12) / 4
// + 367 * (month - 2 - (month - 14) / 12 * 12) / 12
// - 3 * ((year + 4900 + (month - 14) / 12) / 100) / 4
// - offset
// ------------------------------------------------------------------------
function _daysFromDate(uint year, uint month, uint day) internal pure returns (uint _days) {
require(year >= 1970);
int _year = int(year);
int _month = int(month);
int _day = int(day);
int __days = _day
- 32075
+ 1461 * (_year + 4800 + (_month - 14) / 12) / 4
+ 367 * (_month - 2 - (_month - 14) / 12 * 12) / 12
- 3 * ((_year + 4900 + (_month - 14) / 12) / 100) / 4
- OFFSET19700101;
_days = uint(__days);
}
// ------------------------------------------------------------------------
// Calculate year/month/day from the number of days since 1970/01/01 using
// the date conversion algorithm from
// http://aa.usno.navy.mil/faq/docs/JD_Formula.php
// and adding the offset 2440588 so that 1970/01/01 is day 0
//
// int L = days + 68569 + offset
// int N = 4 * L / 146097
// L = L - (146097 * N + 3) / 4
// year = 4000 * (L + 1) / 1461001
// L = L - 1461 * year / 4 + 31
// month = 80 * L / 2447
// dd = L - 2447 * month / 80
// L = month / 11
// month = month + 2 - 12 * L
// year = 100 * (N - 49) + year + L
// ------------------------------------------------------------------------
function _daysToDate(uint _days) internal pure returns (uint year, uint month, uint day) {
int __days = int(_days);
int L = __days + 68569 + OFFSET19700101;
int N = 4 * L / 146097;
L = L - (146097 * N + 3) / 4;
int _year = 4000 * (L + 1) / 1461001;
L = L - 1461 * _year / 4 + 31;
int _month = 80 * L / 2447;
int _day = L - 2447 * _month / 80;
L = _month / 11;
_month = _month + 2 - 12 * L;
_year = 100 * (N - 49) + _year + L;
year = uint(_year);
month = uint(_month);
day = uint(_day);
}
function timestampFromDate(uint year, uint month, uint day) internal pure returns (uint timestamp) {
timestamp = _daysFromDate(year, month, day) * SECONDS_PER_DAY;
}
function timestampFromDateTime(uint year, uint month, uint day, uint hour, uint minute, uint second) internal pure returns (uint timestamp) {
timestamp = _daysFromDate(year, month, day) * SECONDS_PER_DAY + hour * SECONDS_PER_HOUR + minute * SECONDS_PER_MINUTE + second;
}
function timestampToDate(uint timestamp) internal pure returns (uint year, uint month, uint day) {
(year, month, day) = _daysToDate(timestamp / SECONDS_PER_DAY);
}
function timestampToDateTime(uint timestamp) internal pure returns (uint year, uint month, uint day, uint hour, uint minute, uint second) {
(year, month, day) = _daysToDate(timestamp / SECONDS_PER_DAY);
uint secs = timestamp % SECONDS_PER_DAY;
hour = secs / SECONDS_PER_HOUR;
secs = secs % SECONDS_PER_HOUR;
minute = secs / SECONDS_PER_MINUTE;
second = secs % SECONDS_PER_MINUTE;
}
function isValidDate(uint year, uint month, uint day) internal pure returns (bool valid) {
if (year >= 1970 && month > 0 && month <= 12) {
uint daysInMonth = _getDaysInMonth(year, month);
if (day > 0 && day <= daysInMonth) {
valid = true;
}
}
}
function isValidDateTime(uint year, uint month, uint day, uint hour, uint minute, uint second) internal pure returns (bool valid) {
if (isValidDate(year, month, day)) {
if (hour < 24 && minute < 60 && second < 60) {
valid = true;
}
}
}
function isLeapYear(uint timestamp) internal pure returns (bool leapYear) {
(uint year,,) = _daysToDate(timestamp / SECONDS_PER_DAY);
leapYear = _isLeapYear(year);
}
function _isLeapYear(uint year) internal pure returns (bool leapYear) {
leapYear = ((year % 4 == 0) && (year % 100 != 0)) || (year % 400 == 0);
}
function isWeekDay(uint timestamp) internal pure returns (bool weekDay) {
weekDay = getDayOfWeek(timestamp) <= DOW_FRI;
}
function isWeekEnd(uint timestamp) internal pure returns (bool weekEnd) {
weekEnd = getDayOfWeek(timestamp) >= DOW_SAT;
}
function getDaysInMonth(uint timestamp) internal pure returns (uint daysInMonth) {
(uint year, uint month,) = _daysToDate(timestamp / SECONDS_PER_DAY);
daysInMonth = _getDaysInMonth(year, month);
}
function _getDaysInMonth(uint year, uint month) internal pure returns (uint daysInMonth) {
if (month == 1 || month == 3 || month == 5 || month == 7 || month == 8 || month == 10 || month == 12) {
daysInMonth = 31;
} else if (month != 2) {
daysInMonth = 30;
} else {
daysInMonth = _isLeapYear(year) ? 29 : 28;
}
}
// 1 = Monday, 7 = Sunday
function getDayOfWeek(uint timestamp) internal pure returns (uint dayOfWeek) {
uint _days = timestamp / SECONDS_PER_DAY;
dayOfWeek = (_days + 3) % 7 + 1;
}
function getYear(uint timestamp) internal pure returns (uint year) {
(year,,) = _daysToDate(timestamp / SECONDS_PER_DAY);
}
function getMonth(uint timestamp) internal pure returns (uint month) {
(,month,) = _daysToDate(timestamp / SECONDS_PER_DAY);
}
function getDay(uint timestamp) internal pure returns (uint day) {
(,,day) = _daysToDate(timestamp / SECONDS_PER_DAY);
}
function getHour(uint timestamp) internal pure returns (uint hour) {
uint secs = timestamp % SECONDS_PER_DAY;
hour = secs / SECONDS_PER_HOUR;
}
function getMinute(uint timestamp) internal pure returns (uint minute) {
uint secs = timestamp % SECONDS_PER_HOUR;
minute = secs / SECONDS_PER_MINUTE;
}
function getSecond(uint timestamp) internal pure returns (uint second) {
second = timestamp % SECONDS_PER_MINUTE;
}
function addYears(uint timestamp, uint _years) internal pure returns (uint newTimestamp) {
(uint year, uint month, uint day) = _daysToDate(timestamp / SECONDS_PER_DAY);
year += _years;
uint daysInMonth = _getDaysInMonth(year, month);
if (day > daysInMonth) {
day = daysInMonth;
}
newTimestamp = _daysFromDate(year, month, day) * SECONDS_PER_DAY + timestamp % SECONDS_PER_DAY;
require(newTimestamp >= timestamp);
}
function addMonths(uint timestamp, uint _months) internal pure returns (uint newTimestamp) {
(uint year, uint month, uint day) = _daysToDate(timestamp / SECONDS_PER_DAY);
month += _months;
year += (month - 1) / 12;
month = (month - 1) % 12 + 1;
uint daysInMonth = _getDaysInMonth(year, month);
if (day > daysInMonth) {
day = daysInMonth;
}
newTimestamp = _daysFromDate(year, month, day) * SECONDS_PER_DAY + timestamp % SECONDS_PER_DAY;
require(newTimestamp >= timestamp);
}
function addDays(uint timestamp, uint _days) internal pure returns (uint newTimestamp) {
newTimestamp = timestamp + _days * SECONDS_PER_DAY;
require(newTimestamp >= timestamp);
}
function addHours(uint timestamp, uint _hours) internal pure returns (uint newTimestamp) {
newTimestamp = timestamp + _hours * SECONDS_PER_HOUR;
require(newTimestamp >= timestamp);
}
function addMinutes(uint timestamp, uint _minutes) internal pure returns (uint newTimestamp) {
newTimestamp = timestamp + _minutes * SECONDS_PER_MINUTE;
require(newTimestamp >= timestamp);
}
function addSeconds(uint timestamp, uint _seconds) internal pure returns (uint newTimestamp) {
newTimestamp = timestamp + _seconds;
require(newTimestamp >= timestamp);
}
function subYears(uint timestamp, uint _years) internal pure returns (uint newTimestamp) {
(uint year, uint month, uint day) = _daysToDate(timestamp / SECONDS_PER_DAY);
year -= _years;
uint daysInMonth = _getDaysInMonth(year, month);
if (day > daysInMonth) {
day = daysInMonth;
}
newTimestamp = _daysFromDate(year, month, day) * SECONDS_PER_DAY + timestamp % SECONDS_PER_DAY;
require(newTimestamp <= timestamp);
}
function subMonths(uint timestamp, uint _months) internal pure returns (uint newTimestamp) {
(uint year, uint month, uint day) = _daysToDate(timestamp / SECONDS_PER_DAY);
uint yearMonth = year * 12 + (month - 1) - _months;
year = yearMonth / 12;
month = yearMonth % 12 + 1;
uint daysInMonth = _getDaysInMonth(year, month);
if (day > daysInMonth) {
day = daysInMonth;
}
newTimestamp = _daysFromDate(year, month, day) * SECONDS_PER_DAY + timestamp % SECONDS_PER_DAY;
require(newTimestamp <= timestamp);
}
function subDays(uint timestamp, uint _days) internal pure returns (uint newTimestamp) {
newTimestamp = timestamp - _days * SECONDS_PER_DAY;
require(newTimestamp <= timestamp);
}
function subHours(uint timestamp, uint _hours) internal pure returns (uint newTimestamp) {
newTimestamp = timestamp - _hours * SECONDS_PER_HOUR;
require(newTimestamp <= timestamp);
}
function subMinutes(uint timestamp, uint _minutes) internal pure returns (uint newTimestamp) {
newTimestamp = timestamp - _minutes * SECONDS_PER_MINUTE;
require(newTimestamp <= timestamp);
}
function subSeconds(uint timestamp, uint _seconds) internal pure returns (uint newTimestamp) {
newTimestamp = timestamp - _seconds;
require(newTimestamp <= timestamp);
}
function diffYears(uint fromTimestamp, uint toTimestamp) internal pure returns (uint _years) {
require(fromTimestamp <= toTimestamp);
(uint fromYear,,) = _daysToDate(fromTimestamp / SECONDS_PER_DAY);
(uint toYear,,) = _daysToDate(toTimestamp / SECONDS_PER_DAY);
_years = toYear - fromYear;
}
function diffMonths(uint fromTimestamp, uint toTimestamp) internal pure returns (uint _months) {
require(fromTimestamp <= toTimestamp);
(uint fromYear, uint fromMonth,) = _daysToDate(fromTimestamp / SECONDS_PER_DAY);
(uint toYear, uint toMonth,) = _daysToDate(toTimestamp / SECONDS_PER_DAY);
_months = toYear * 12 + toMonth - fromYear * 12 - fromMonth;
}
function diffDays(uint fromTimestamp, uint toTimestamp) internal pure returns (uint _days) {
require(fromTimestamp <= toTimestamp);
_days = (toTimestamp - fromTimestamp) / SECONDS_PER_DAY;
}
function diffHours(uint fromTimestamp, uint toTimestamp) internal pure returns (uint _hours) {
require(fromTimestamp <= toTimestamp);
_hours = (toTimestamp - fromTimestamp) / SECONDS_PER_HOUR;
}
function diffMinutes(uint fromTimestamp, uint toTimestamp) internal pure returns (uint _minutes) {
require(fromTimestamp <= toTimestamp);
_minutes = (toTimestamp - fromTimestamp) / SECONDS_PER_MINUTE;
}
function diffSeconds(uint fromTimestamp, uint toTimestamp) internal pure returns (uint _seconds) {
require(fromTimestamp <= toTimestamp);
_seconds = toTimestamp - fromTimestamp;
}
} | // ----------------------------------------------------------------------------
// BokkyPooBah's DateTime Library v1.01
//
// A gas-efficient Solidity date and time library
//
// https://github.com/bokkypoobah/BokkyPooBahsDateTimeLibrary
//
// Tested date range 1970/01/01 to 2345/12/31
//
// Conventions:
// Unit | Range | Notes
// :-------- |:-------------:|:-----
// timestamp | >= 0 | Unix timestamp, number of seconds since 1970/01/01 00:00:00 UTC
// year | 1970 ... 2345 |
// month | 1 ... 12 |
// day | 1 ... 31 |
// hour | 0 ... 23 |
// minute | 0 ... 59 |
// second | 0 ... 59 |
// dayOfWeek | 1 ... 7 | 1 = Monday, ..., 7 = Sunday
//
//
// Enjoy. (c) BokkyPooBah / Bok Consulting Pty Ltd 2018-2019. The MIT Licence.
// ---------------------------------------------------------------------------- | LineComment | _daysToDate | function _daysToDate(uint _days) internal pure returns (uint year, uint month, uint day) {
int __days = int(_days);
int L = __days + 68569 + OFFSET19700101;
int N = 4 * L / 146097;
L = L - (146097 * N + 3) / 4;
int _year = 4000 * (L + 1) / 1461001;
L = L - 1461 * _year / 4 + 31;
int _month = 80 * L / 2447;
int _day = L - 2447 * _month / 80;
L = _month / 11;
_month = _month + 2 - 12 * L;
_year = 100 * (N - 49) + _year + L;
year = uint(_year);
month = uint(_month);
day = uint(_day);
}
| // ------------------------------------------------------------------------
// Calculate year/month/day from the number of days since 1970/01/01 using
// the date conversion algorithm from
// http://aa.usno.navy.mil/faq/docs/JD_Formula.php
// and adding the offset 2440588 so that 1970/01/01 is day 0
//
// int L = days + 68569 + offset
// int N = 4 * L / 146097
// L = L - (146097 * N + 3) / 4
// year = 4000 * (L + 1) / 1461001
// L = L - 1461 * year / 4 + 31
// month = 80 * L / 2447
// dd = L - 2447 * month / 80
// L = month / 11
// month = month + 2 - 12 * L
// year = 100 * (N - 49) + year + L
// ------------------------------------------------------------------------ | LineComment | v0.8.10+commit.fc410830 | {
"func_code_index": [
2360,
2969
]
} | 8,634 |
||
EthTime | EthTime.sol | 0xe339d6f5a42e581dce5a479fca0ed02248a6dca4 | Solidity | BokkyPooBahsDateTimeLibrary | library BokkyPooBahsDateTimeLibrary {
uint constant SECONDS_PER_DAY = 24 * 60 * 60;
uint constant SECONDS_PER_HOUR = 60 * 60;
uint constant SECONDS_PER_MINUTE = 60;
int constant OFFSET19700101 = 2440588;
uint constant DOW_MON = 1;
uint constant DOW_TUE = 2;
uint constant DOW_WED = 3;
uint constant DOW_THU = 4;
uint constant DOW_FRI = 5;
uint constant DOW_SAT = 6;
uint constant DOW_SUN = 7;
// ------------------------------------------------------------------------
// Calculate the number of days from 1970/01/01 to year/month/day using
// the date conversion algorithm from
// http://aa.usno.navy.mil/faq/docs/JD_Formula.php
// and subtracting the offset 2440588 so that 1970/01/01 is day 0
//
// days = day
// - 32075
// + 1461 * (year + 4800 + (month - 14) / 12) / 4
// + 367 * (month - 2 - (month - 14) / 12 * 12) / 12
// - 3 * ((year + 4900 + (month - 14) / 12) / 100) / 4
// - offset
// ------------------------------------------------------------------------
function _daysFromDate(uint year, uint month, uint day) internal pure returns (uint _days) {
require(year >= 1970);
int _year = int(year);
int _month = int(month);
int _day = int(day);
int __days = _day
- 32075
+ 1461 * (_year + 4800 + (_month - 14) / 12) / 4
+ 367 * (_month - 2 - (_month - 14) / 12 * 12) / 12
- 3 * ((_year + 4900 + (_month - 14) / 12) / 100) / 4
- OFFSET19700101;
_days = uint(__days);
}
// ------------------------------------------------------------------------
// Calculate year/month/day from the number of days since 1970/01/01 using
// the date conversion algorithm from
// http://aa.usno.navy.mil/faq/docs/JD_Formula.php
// and adding the offset 2440588 so that 1970/01/01 is day 0
//
// int L = days + 68569 + offset
// int N = 4 * L / 146097
// L = L - (146097 * N + 3) / 4
// year = 4000 * (L + 1) / 1461001
// L = L - 1461 * year / 4 + 31
// month = 80 * L / 2447
// dd = L - 2447 * month / 80
// L = month / 11
// month = month + 2 - 12 * L
// year = 100 * (N - 49) + year + L
// ------------------------------------------------------------------------
function _daysToDate(uint _days) internal pure returns (uint year, uint month, uint day) {
int __days = int(_days);
int L = __days + 68569 + OFFSET19700101;
int N = 4 * L / 146097;
L = L - (146097 * N + 3) / 4;
int _year = 4000 * (L + 1) / 1461001;
L = L - 1461 * _year / 4 + 31;
int _month = 80 * L / 2447;
int _day = L - 2447 * _month / 80;
L = _month / 11;
_month = _month + 2 - 12 * L;
_year = 100 * (N - 49) + _year + L;
year = uint(_year);
month = uint(_month);
day = uint(_day);
}
function timestampFromDate(uint year, uint month, uint day) internal pure returns (uint timestamp) {
timestamp = _daysFromDate(year, month, day) * SECONDS_PER_DAY;
}
function timestampFromDateTime(uint year, uint month, uint day, uint hour, uint minute, uint second) internal pure returns (uint timestamp) {
timestamp = _daysFromDate(year, month, day) * SECONDS_PER_DAY + hour * SECONDS_PER_HOUR + minute * SECONDS_PER_MINUTE + second;
}
function timestampToDate(uint timestamp) internal pure returns (uint year, uint month, uint day) {
(year, month, day) = _daysToDate(timestamp / SECONDS_PER_DAY);
}
function timestampToDateTime(uint timestamp) internal pure returns (uint year, uint month, uint day, uint hour, uint minute, uint second) {
(year, month, day) = _daysToDate(timestamp / SECONDS_PER_DAY);
uint secs = timestamp % SECONDS_PER_DAY;
hour = secs / SECONDS_PER_HOUR;
secs = secs % SECONDS_PER_HOUR;
minute = secs / SECONDS_PER_MINUTE;
second = secs % SECONDS_PER_MINUTE;
}
function isValidDate(uint year, uint month, uint day) internal pure returns (bool valid) {
if (year >= 1970 && month > 0 && month <= 12) {
uint daysInMonth = _getDaysInMonth(year, month);
if (day > 0 && day <= daysInMonth) {
valid = true;
}
}
}
function isValidDateTime(uint year, uint month, uint day, uint hour, uint minute, uint second) internal pure returns (bool valid) {
if (isValidDate(year, month, day)) {
if (hour < 24 && minute < 60 && second < 60) {
valid = true;
}
}
}
function isLeapYear(uint timestamp) internal pure returns (bool leapYear) {
(uint year,,) = _daysToDate(timestamp / SECONDS_PER_DAY);
leapYear = _isLeapYear(year);
}
function _isLeapYear(uint year) internal pure returns (bool leapYear) {
leapYear = ((year % 4 == 0) && (year % 100 != 0)) || (year % 400 == 0);
}
function isWeekDay(uint timestamp) internal pure returns (bool weekDay) {
weekDay = getDayOfWeek(timestamp) <= DOW_FRI;
}
function isWeekEnd(uint timestamp) internal pure returns (bool weekEnd) {
weekEnd = getDayOfWeek(timestamp) >= DOW_SAT;
}
function getDaysInMonth(uint timestamp) internal pure returns (uint daysInMonth) {
(uint year, uint month,) = _daysToDate(timestamp / SECONDS_PER_DAY);
daysInMonth = _getDaysInMonth(year, month);
}
function _getDaysInMonth(uint year, uint month) internal pure returns (uint daysInMonth) {
if (month == 1 || month == 3 || month == 5 || month == 7 || month == 8 || month == 10 || month == 12) {
daysInMonth = 31;
} else if (month != 2) {
daysInMonth = 30;
} else {
daysInMonth = _isLeapYear(year) ? 29 : 28;
}
}
// 1 = Monday, 7 = Sunday
function getDayOfWeek(uint timestamp) internal pure returns (uint dayOfWeek) {
uint _days = timestamp / SECONDS_PER_DAY;
dayOfWeek = (_days + 3) % 7 + 1;
}
function getYear(uint timestamp) internal pure returns (uint year) {
(year,,) = _daysToDate(timestamp / SECONDS_PER_DAY);
}
function getMonth(uint timestamp) internal pure returns (uint month) {
(,month,) = _daysToDate(timestamp / SECONDS_PER_DAY);
}
function getDay(uint timestamp) internal pure returns (uint day) {
(,,day) = _daysToDate(timestamp / SECONDS_PER_DAY);
}
function getHour(uint timestamp) internal pure returns (uint hour) {
uint secs = timestamp % SECONDS_PER_DAY;
hour = secs / SECONDS_PER_HOUR;
}
function getMinute(uint timestamp) internal pure returns (uint minute) {
uint secs = timestamp % SECONDS_PER_HOUR;
minute = secs / SECONDS_PER_MINUTE;
}
function getSecond(uint timestamp) internal pure returns (uint second) {
second = timestamp % SECONDS_PER_MINUTE;
}
function addYears(uint timestamp, uint _years) internal pure returns (uint newTimestamp) {
(uint year, uint month, uint day) = _daysToDate(timestamp / SECONDS_PER_DAY);
year += _years;
uint daysInMonth = _getDaysInMonth(year, month);
if (day > daysInMonth) {
day = daysInMonth;
}
newTimestamp = _daysFromDate(year, month, day) * SECONDS_PER_DAY + timestamp % SECONDS_PER_DAY;
require(newTimestamp >= timestamp);
}
function addMonths(uint timestamp, uint _months) internal pure returns (uint newTimestamp) {
(uint year, uint month, uint day) = _daysToDate(timestamp / SECONDS_PER_DAY);
month += _months;
year += (month - 1) / 12;
month = (month - 1) % 12 + 1;
uint daysInMonth = _getDaysInMonth(year, month);
if (day > daysInMonth) {
day = daysInMonth;
}
newTimestamp = _daysFromDate(year, month, day) * SECONDS_PER_DAY + timestamp % SECONDS_PER_DAY;
require(newTimestamp >= timestamp);
}
function addDays(uint timestamp, uint _days) internal pure returns (uint newTimestamp) {
newTimestamp = timestamp + _days * SECONDS_PER_DAY;
require(newTimestamp >= timestamp);
}
function addHours(uint timestamp, uint _hours) internal pure returns (uint newTimestamp) {
newTimestamp = timestamp + _hours * SECONDS_PER_HOUR;
require(newTimestamp >= timestamp);
}
function addMinutes(uint timestamp, uint _minutes) internal pure returns (uint newTimestamp) {
newTimestamp = timestamp + _minutes * SECONDS_PER_MINUTE;
require(newTimestamp >= timestamp);
}
function addSeconds(uint timestamp, uint _seconds) internal pure returns (uint newTimestamp) {
newTimestamp = timestamp + _seconds;
require(newTimestamp >= timestamp);
}
function subYears(uint timestamp, uint _years) internal pure returns (uint newTimestamp) {
(uint year, uint month, uint day) = _daysToDate(timestamp / SECONDS_PER_DAY);
year -= _years;
uint daysInMonth = _getDaysInMonth(year, month);
if (day > daysInMonth) {
day = daysInMonth;
}
newTimestamp = _daysFromDate(year, month, day) * SECONDS_PER_DAY + timestamp % SECONDS_PER_DAY;
require(newTimestamp <= timestamp);
}
function subMonths(uint timestamp, uint _months) internal pure returns (uint newTimestamp) {
(uint year, uint month, uint day) = _daysToDate(timestamp / SECONDS_PER_DAY);
uint yearMonth = year * 12 + (month - 1) - _months;
year = yearMonth / 12;
month = yearMonth % 12 + 1;
uint daysInMonth = _getDaysInMonth(year, month);
if (day > daysInMonth) {
day = daysInMonth;
}
newTimestamp = _daysFromDate(year, month, day) * SECONDS_PER_DAY + timestamp % SECONDS_PER_DAY;
require(newTimestamp <= timestamp);
}
function subDays(uint timestamp, uint _days) internal pure returns (uint newTimestamp) {
newTimestamp = timestamp - _days * SECONDS_PER_DAY;
require(newTimestamp <= timestamp);
}
function subHours(uint timestamp, uint _hours) internal pure returns (uint newTimestamp) {
newTimestamp = timestamp - _hours * SECONDS_PER_HOUR;
require(newTimestamp <= timestamp);
}
function subMinutes(uint timestamp, uint _minutes) internal pure returns (uint newTimestamp) {
newTimestamp = timestamp - _minutes * SECONDS_PER_MINUTE;
require(newTimestamp <= timestamp);
}
function subSeconds(uint timestamp, uint _seconds) internal pure returns (uint newTimestamp) {
newTimestamp = timestamp - _seconds;
require(newTimestamp <= timestamp);
}
function diffYears(uint fromTimestamp, uint toTimestamp) internal pure returns (uint _years) {
require(fromTimestamp <= toTimestamp);
(uint fromYear,,) = _daysToDate(fromTimestamp / SECONDS_PER_DAY);
(uint toYear,,) = _daysToDate(toTimestamp / SECONDS_PER_DAY);
_years = toYear - fromYear;
}
function diffMonths(uint fromTimestamp, uint toTimestamp) internal pure returns (uint _months) {
require(fromTimestamp <= toTimestamp);
(uint fromYear, uint fromMonth,) = _daysToDate(fromTimestamp / SECONDS_PER_DAY);
(uint toYear, uint toMonth,) = _daysToDate(toTimestamp / SECONDS_PER_DAY);
_months = toYear * 12 + toMonth - fromYear * 12 - fromMonth;
}
function diffDays(uint fromTimestamp, uint toTimestamp) internal pure returns (uint _days) {
require(fromTimestamp <= toTimestamp);
_days = (toTimestamp - fromTimestamp) / SECONDS_PER_DAY;
}
function diffHours(uint fromTimestamp, uint toTimestamp) internal pure returns (uint _hours) {
require(fromTimestamp <= toTimestamp);
_hours = (toTimestamp - fromTimestamp) / SECONDS_PER_HOUR;
}
function diffMinutes(uint fromTimestamp, uint toTimestamp) internal pure returns (uint _minutes) {
require(fromTimestamp <= toTimestamp);
_minutes = (toTimestamp - fromTimestamp) / SECONDS_PER_MINUTE;
}
function diffSeconds(uint fromTimestamp, uint toTimestamp) internal pure returns (uint _seconds) {
require(fromTimestamp <= toTimestamp);
_seconds = toTimestamp - fromTimestamp;
}
} | // ----------------------------------------------------------------------------
// BokkyPooBah's DateTime Library v1.01
//
// A gas-efficient Solidity date and time library
//
// https://github.com/bokkypoobah/BokkyPooBahsDateTimeLibrary
//
// Tested date range 1970/01/01 to 2345/12/31
//
// Conventions:
// Unit | Range | Notes
// :-------- |:-------------:|:-----
// timestamp | >= 0 | Unix timestamp, number of seconds since 1970/01/01 00:00:00 UTC
// year | 1970 ... 2345 |
// month | 1 ... 12 |
// day | 1 ... 31 |
// hour | 0 ... 23 |
// minute | 0 ... 59 |
// second | 0 ... 59 |
// dayOfWeek | 1 ... 7 | 1 = Monday, ..., 7 = Sunday
//
//
// Enjoy. (c) BokkyPooBah / Bok Consulting Pty Ltd 2018-2019. The MIT Licence.
// ---------------------------------------------------------------------------- | LineComment | getDayOfWeek | function getDayOfWeek(uint timestamp) internal pure returns (uint dayOfWeek) {
uint _days = timestamp / SECONDS_PER_DAY;
dayOfWeek = (_days + 3) % 7 + 1;
}
| // 1 = Monday, 7 = Sunday | LineComment | v0.8.10+commit.fc410830 | {
"func_code_index": [
5949,
6128
]
} | 8,635 |
||
EthTime | EthTime.sol | 0xe339d6f5a42e581dce5a479fca0ed02248a6dca4 | Solidity | Ownable | abstract contract Ownable is Context {
address private _owner;
event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);
/**
* @dev Initializes the contract setting the deployer as the initial owner.
*/
constructor() {
_transferOwnership(_msgSender());
}
/**
* @dev Returns the address of the current owner.
*/
function owner() public view virtual returns (address) {
return _owner;
}
/**
* @dev Throws if called by any account other than the owner.
*/
modifier onlyOwner() {
require(owner() == _msgSender(), "Ownable: caller is not the owner");
_;
}
/**
* @dev Leaves the contract without owner. It will not be possible to call
* `onlyOwner` functions anymore. Can only be called by the current owner.
*
* NOTE: Renouncing ownership will leave the contract without an owner,
* thereby removing any functionality that is only available to the owner.
*/
function renounceOwnership() public virtual onlyOwner {
_transferOwnership(address(0));
}
/**
* @dev Transfers ownership of the contract to a new account (`newOwner`).
* Can only be called by the current owner.
*/
function transferOwnership(address newOwner) public virtual onlyOwner {
require(newOwner != address(0), "Ownable: new owner is the zero address");
_transferOwnership(newOwner);
}
/**
* @dev Transfers ownership of the contract to a new account (`newOwner`).
* Internal function without access restriction.
*/
function _transferOwnership(address newOwner) internal virtual {
address oldOwner = _owner;
_owner = newOwner;
emit OwnershipTransferred(oldOwner, newOwner);
}
} | /**
* @dev Contract module which provides a basic access control mechanism, where
* there is an account (an owner) that can be granted exclusive access to
* specific functions.
*
* By default, the owner account will be the one that deploys the contract. This
* can later be changed with {transferOwnership}.
*
* This module is used through inheritance. It will make available the modifier
* `onlyOwner`, which can be applied to your functions to restrict their use to
* the owner.
*/ | NatSpecMultiLine | owner | function owner() public view virtual returns (address) {
return _owner;
}
| /**
* @dev Returns the address of the current owner.
*/ | NatSpecMultiLine | v0.8.10+commit.fc410830 | {
"func_code_index": [
393,
482
]
} | 8,636 |
||
EthTime | EthTime.sol | 0xe339d6f5a42e581dce5a479fca0ed02248a6dca4 | Solidity | Ownable | abstract contract Ownable is Context {
address private _owner;
event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);
/**
* @dev Initializes the contract setting the deployer as the initial owner.
*/
constructor() {
_transferOwnership(_msgSender());
}
/**
* @dev Returns the address of the current owner.
*/
function owner() public view virtual returns (address) {
return _owner;
}
/**
* @dev Throws if called by any account other than the owner.
*/
modifier onlyOwner() {
require(owner() == _msgSender(), "Ownable: caller is not the owner");
_;
}
/**
* @dev Leaves the contract without owner. It will not be possible to call
* `onlyOwner` functions anymore. Can only be called by the current owner.
*
* NOTE: Renouncing ownership will leave the contract without an owner,
* thereby removing any functionality that is only available to the owner.
*/
function renounceOwnership() public virtual onlyOwner {
_transferOwnership(address(0));
}
/**
* @dev Transfers ownership of the contract to a new account (`newOwner`).
* Can only be called by the current owner.
*/
function transferOwnership(address newOwner) public virtual onlyOwner {
require(newOwner != address(0), "Ownable: new owner is the zero address");
_transferOwnership(newOwner);
}
/**
* @dev Transfers ownership of the contract to a new account (`newOwner`).
* Internal function without access restriction.
*/
function _transferOwnership(address newOwner) internal virtual {
address oldOwner = _owner;
_owner = newOwner;
emit OwnershipTransferred(oldOwner, newOwner);
}
} | /**
* @dev Contract module which provides a basic access control mechanism, where
* there is an account (an owner) that can be granted exclusive access to
* specific functions.
*
* By default, the owner account will be the one that deploys the contract. This
* can later be changed with {transferOwnership}.
*
* This module is used through inheritance. It will make available the modifier
* `onlyOwner`, which can be applied to your functions to restrict their use to
* the owner.
*/ | NatSpecMultiLine | renounceOwnership | function renounceOwnership() public virtual onlyOwner {
_transferOwnership(address(0));
}
| /**
* @dev Leaves the contract without owner. It will not be possible to call
* `onlyOwner` functions anymore. Can only be called by the current owner.
*
* NOTE: Renouncing ownership will leave the contract without an owner,
* thereby removing any functionality that is only available to the owner.
*/ | NatSpecMultiLine | v0.8.10+commit.fc410830 | {
"func_code_index": [
1025,
1130
]
} | 8,637 |
||
EthTime | EthTime.sol | 0xe339d6f5a42e581dce5a479fca0ed02248a6dca4 | Solidity | Ownable | abstract contract Ownable is Context {
address private _owner;
event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);
/**
* @dev Initializes the contract setting the deployer as the initial owner.
*/
constructor() {
_transferOwnership(_msgSender());
}
/**
* @dev Returns the address of the current owner.
*/
function owner() public view virtual returns (address) {
return _owner;
}
/**
* @dev Throws if called by any account other than the owner.
*/
modifier onlyOwner() {
require(owner() == _msgSender(), "Ownable: caller is not the owner");
_;
}
/**
* @dev Leaves the contract without owner. It will not be possible to call
* `onlyOwner` functions anymore. Can only be called by the current owner.
*
* NOTE: Renouncing ownership will leave the contract without an owner,
* thereby removing any functionality that is only available to the owner.
*/
function renounceOwnership() public virtual onlyOwner {
_transferOwnership(address(0));
}
/**
* @dev Transfers ownership of the contract to a new account (`newOwner`).
* Can only be called by the current owner.
*/
function transferOwnership(address newOwner) public virtual onlyOwner {
require(newOwner != address(0), "Ownable: new owner is the zero address");
_transferOwnership(newOwner);
}
/**
* @dev Transfers ownership of the contract to a new account (`newOwner`).
* Internal function without access restriction.
*/
function _transferOwnership(address newOwner) internal virtual {
address oldOwner = _owner;
_owner = newOwner;
emit OwnershipTransferred(oldOwner, newOwner);
}
} | /**
* @dev Contract module which provides a basic access control mechanism, where
* there is an account (an owner) that can be granted exclusive access to
* specific functions.
*
* By default, the owner account will be the one that deploys the contract. This
* can later be changed with {transferOwnership}.
*
* This module is used through inheritance. It will make available the modifier
* `onlyOwner`, which can be applied to your functions to restrict their use to
* the owner.
*/ | NatSpecMultiLine | transferOwnership | function transferOwnership(address newOwner) public virtual onlyOwner {
require(newOwner != address(0), "Ownable: new owner is the zero address");
_transferOwnership(newOwner);
}
| /**
* @dev Transfers ownership of the contract to a new account (`newOwner`).
* Can only be called by the current owner.
*/ | NatSpecMultiLine | v0.8.10+commit.fc410830 | {
"func_code_index": [
1275,
1477
]
} | 8,638 |
||
EthTime | EthTime.sol | 0xe339d6f5a42e581dce5a479fca0ed02248a6dca4 | Solidity | Ownable | abstract contract Ownable is Context {
address private _owner;
event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);
/**
* @dev Initializes the contract setting the deployer as the initial owner.
*/
constructor() {
_transferOwnership(_msgSender());
}
/**
* @dev Returns the address of the current owner.
*/
function owner() public view virtual returns (address) {
return _owner;
}
/**
* @dev Throws if called by any account other than the owner.
*/
modifier onlyOwner() {
require(owner() == _msgSender(), "Ownable: caller is not the owner");
_;
}
/**
* @dev Leaves the contract without owner. It will not be possible to call
* `onlyOwner` functions anymore. Can only be called by the current owner.
*
* NOTE: Renouncing ownership will leave the contract without an owner,
* thereby removing any functionality that is only available to the owner.
*/
function renounceOwnership() public virtual onlyOwner {
_transferOwnership(address(0));
}
/**
* @dev Transfers ownership of the contract to a new account (`newOwner`).
* Can only be called by the current owner.
*/
function transferOwnership(address newOwner) public virtual onlyOwner {
require(newOwner != address(0), "Ownable: new owner is the zero address");
_transferOwnership(newOwner);
}
/**
* @dev Transfers ownership of the contract to a new account (`newOwner`).
* Internal function without access restriction.
*/
function _transferOwnership(address newOwner) internal virtual {
address oldOwner = _owner;
_owner = newOwner;
emit OwnershipTransferred(oldOwner, newOwner);
}
} | /**
* @dev Contract module which provides a basic access control mechanism, where
* there is an account (an owner) that can be granted exclusive access to
* specific functions.
*
* By default, the owner account will be the one that deploys the contract. This
* can later be changed with {transferOwnership}.
*
* This module is used through inheritance. It will make available the modifier
* `onlyOwner`, which can be applied to your functions to restrict their use to
* the owner.
*/ | NatSpecMultiLine | _transferOwnership | function _transferOwnership(address newOwner) internal virtual {
address oldOwner = _owner;
_owner = newOwner;
emit OwnershipTransferred(oldOwner, newOwner);
}
| /**
* @dev Transfers ownership of the contract to a new account (`newOwner`).
* Internal function without access restriction.
*/ | NatSpecMultiLine | v0.8.10+commit.fc410830 | {
"func_code_index": [
1627,
1818
]
} | 8,639 |
||
EthTime | EthTime.sol | 0xe339d6f5a42e581dce5a479fca0ed02248a6dca4 | Solidity | Strings | library Strings {
bytes16 private constant _HEX_SYMBOLS = "0123456789abcdef";
/**
* @dev Converts a `uint256` to its ASCII `string` decimal representation.
*/
function toString(uint256 value) internal pure returns (string memory) {
// Inspired by OraclizeAPI's implementation - MIT licence
// https://github.com/oraclize/ethereum-api/blob/b42146b063c7d6ee1358846c198246239e9360e8/oraclizeAPI_0.4.25.sol
if (value == 0) {
return "0";
}
uint256 temp = value;
uint256 digits;
while (temp != 0) {
digits++;
temp /= 10;
}
bytes memory buffer = new bytes(digits);
while (value != 0) {
digits -= 1;
buffer[digits] = bytes1(uint8(48 + uint256(value % 10)));
value /= 10;
}
return string(buffer);
}
/**
* @dev Converts a `uint256` to its ASCII `string` hexadecimal representation.
*/
function toHexString(uint256 value) internal pure returns (string memory) {
if (value == 0) {
return "0x00";
}
uint256 temp = value;
uint256 length = 0;
while (temp != 0) {
length++;
temp >>= 8;
}
return toHexString(value, length);
}
/**
* @dev Converts a `uint256` to its ASCII `string` hexadecimal representation with fixed length.
*/
function toHexString(uint256 value, uint256 length) internal pure returns (string memory) {
bytes memory buffer = new bytes(2 * length + 2);
buffer[0] = "0";
buffer[1] = "x";
for (uint256 i = 2 * length + 1; i > 1; --i) {
buffer[i] = _HEX_SYMBOLS[value & 0xf];
value >>= 4;
}
require(value == 0, "Strings: hex length insufficient");
return string(buffer);
}
} | /**
* @dev String operations.
*/ | NatSpecMultiLine | toString | function toString(uint256 value) internal pure returns (string memory) {
// Inspired by OraclizeAPI's implementation - MIT licence
// https://github.com/oraclize/ethereum-api/blob/b42146b063c7d6ee1358846c198246239e9360e8/oraclizeAPI_0.4.25.sol
if (value == 0) {
return "0";
}
uint256 temp = value;
uint256 digits;
while (temp != 0) {
digits++;
temp /= 10;
}
bytes memory buffer = new bytes(digits);
while (value != 0) {
digits -= 1;
buffer[digits] = bytes1(uint8(48 + uint256(value % 10)));
value /= 10;
}
return string(buffer);
}
| /**
* @dev Converts a `uint256` to its ASCII `string` decimal representation.
*/ | NatSpecMultiLine | v0.8.10+commit.fc410830 | {
"func_code_index": [
178,
885
]
} | 8,640 |
||
EthTime | EthTime.sol | 0xe339d6f5a42e581dce5a479fca0ed02248a6dca4 | Solidity | Strings | library Strings {
bytes16 private constant _HEX_SYMBOLS = "0123456789abcdef";
/**
* @dev Converts a `uint256` to its ASCII `string` decimal representation.
*/
function toString(uint256 value) internal pure returns (string memory) {
// Inspired by OraclizeAPI's implementation - MIT licence
// https://github.com/oraclize/ethereum-api/blob/b42146b063c7d6ee1358846c198246239e9360e8/oraclizeAPI_0.4.25.sol
if (value == 0) {
return "0";
}
uint256 temp = value;
uint256 digits;
while (temp != 0) {
digits++;
temp /= 10;
}
bytes memory buffer = new bytes(digits);
while (value != 0) {
digits -= 1;
buffer[digits] = bytes1(uint8(48 + uint256(value % 10)));
value /= 10;
}
return string(buffer);
}
/**
* @dev Converts a `uint256` to its ASCII `string` hexadecimal representation.
*/
function toHexString(uint256 value) internal pure returns (string memory) {
if (value == 0) {
return "0x00";
}
uint256 temp = value;
uint256 length = 0;
while (temp != 0) {
length++;
temp >>= 8;
}
return toHexString(value, length);
}
/**
* @dev Converts a `uint256` to its ASCII `string` hexadecimal representation with fixed length.
*/
function toHexString(uint256 value, uint256 length) internal pure returns (string memory) {
bytes memory buffer = new bytes(2 * length + 2);
buffer[0] = "0";
buffer[1] = "x";
for (uint256 i = 2 * length + 1; i > 1; --i) {
buffer[i] = _HEX_SYMBOLS[value & 0xf];
value >>= 4;
}
require(value == 0, "Strings: hex length insufficient");
return string(buffer);
}
} | /**
* @dev String operations.
*/ | NatSpecMultiLine | toHexString | function toHexString(uint256 value) internal pure returns (string memory) {
if (value == 0) {
return "0x00";
}
uint256 temp = value;
uint256 length = 0;
while (temp != 0) {
length++;
temp >>= 8;
}
return toHexString(value, length);
}
| /**
* @dev Converts a `uint256` to its ASCII `string` hexadecimal representation.
*/ | NatSpecMultiLine | v0.8.10+commit.fc410830 | {
"func_code_index": [
986,
1319
]
} | 8,641 |
||
EthTime | EthTime.sol | 0xe339d6f5a42e581dce5a479fca0ed02248a6dca4 | Solidity | Strings | library Strings {
bytes16 private constant _HEX_SYMBOLS = "0123456789abcdef";
/**
* @dev Converts a `uint256` to its ASCII `string` decimal representation.
*/
function toString(uint256 value) internal pure returns (string memory) {
// Inspired by OraclizeAPI's implementation - MIT licence
// https://github.com/oraclize/ethereum-api/blob/b42146b063c7d6ee1358846c198246239e9360e8/oraclizeAPI_0.4.25.sol
if (value == 0) {
return "0";
}
uint256 temp = value;
uint256 digits;
while (temp != 0) {
digits++;
temp /= 10;
}
bytes memory buffer = new bytes(digits);
while (value != 0) {
digits -= 1;
buffer[digits] = bytes1(uint8(48 + uint256(value % 10)));
value /= 10;
}
return string(buffer);
}
/**
* @dev Converts a `uint256` to its ASCII `string` hexadecimal representation.
*/
function toHexString(uint256 value) internal pure returns (string memory) {
if (value == 0) {
return "0x00";
}
uint256 temp = value;
uint256 length = 0;
while (temp != 0) {
length++;
temp >>= 8;
}
return toHexString(value, length);
}
/**
* @dev Converts a `uint256` to its ASCII `string` hexadecimal representation with fixed length.
*/
function toHexString(uint256 value, uint256 length) internal pure returns (string memory) {
bytes memory buffer = new bytes(2 * length + 2);
buffer[0] = "0";
buffer[1] = "x";
for (uint256 i = 2 * length + 1; i > 1; --i) {
buffer[i] = _HEX_SYMBOLS[value & 0xf];
value >>= 4;
}
require(value == 0, "Strings: hex length insufficient");
return string(buffer);
}
} | /**
* @dev String operations.
*/ | NatSpecMultiLine | toHexString | function toHexString(uint256 value, uint256 length) internal pure returns (string memory) {
bytes memory buffer = new bytes(2 * length + 2);
buffer[0] = "0";
buffer[1] = "x";
for (uint256 i = 2 * length + 1; i > 1; --i) {
buffer[i] = _HEX_SYMBOLS[value & 0xf];
value >>= 4;
}
require(value == 0, "Strings: hex length insufficient");
return string(buffer);
}
| /**
* @dev Converts a `uint256` to its ASCII `string` hexadecimal representation with fixed length.
*/ | NatSpecMultiLine | v0.8.10+commit.fc410830 | {
"func_code_index": [
1438,
1883
]
} | 8,642 |
||
EthTime | EthTime.sol | 0xe339d6f5a42e581dce5a479fca0ed02248a6dca4 | Solidity | ERC721 | abstract contract ERC721 {
/*///////////////////////////////////////////////////////////////
EVENTS
//////////////////////////////////////////////////////////////*/
event Transfer(address indexed from, address indexed to, uint256 indexed id);
event Approval(address indexed owner, address indexed spender, uint256 indexed id);
event ApprovalForAll(address indexed owner, address indexed operator, bool approved);
/*///////////////////////////////////////////////////////////////
METADATA STORAGE/LOGIC
//////////////////////////////////////////////////////////////*/
string public name;
string public symbol;
function tokenURI(uint256 id) public view virtual returns (string memory);
/*///////////////////////////////////////////////////////////////
ERC721 STORAGE
//////////////////////////////////////////////////////////////*/
mapping(address => uint256) public balanceOf;
mapping(uint256 => address) public ownerOf;
mapping(uint256 => address) public getApproved;
mapping(address => mapping(address => bool)) public isApprovedForAll;
/*///////////////////////////////////////////////////////////////
CONSTRUCTOR
//////////////////////////////////////////////////////////////*/
constructor(string memory _name, string memory _symbol) {
name = _name;
symbol = _symbol;
}
/*///////////////////////////////////////////////////////////////
ERC721 LOGIC
//////////////////////////////////////////////////////////////*/
function approve(address spender, uint256 id) public virtual {
address owner = ownerOf[id];
require(msg.sender == owner || isApprovedForAll[owner][msg.sender], "NOT_AUTHORIZED");
getApproved[id] = spender;
emit Approval(owner, spender, id);
}
function setApprovalForAll(address operator, bool approved) public virtual {
isApprovedForAll[msg.sender][operator] = approved;
emit ApprovalForAll(msg.sender, operator, approved);
}
function transferFrom(
address from,
address to,
uint256 id
) public virtual {
require(from == ownerOf[id], "WRONG_FROM");
require(to != address(0), "INVALID_RECIPIENT");
require(
msg.sender == from || msg.sender == getApproved[id] || isApprovedForAll[from][msg.sender],
"NOT_AUTHORIZED"
);
// Underflow of the sender's balance is impossible because we check for
// ownership above and the recipient's balance can't realistically overflow.
unchecked {
balanceOf[from]--;
balanceOf[to]++;
}
ownerOf[id] = to;
delete getApproved[id];
emit Transfer(from, to, id);
}
function safeTransferFrom(
address from,
address to,
uint256 id
) public virtual {
transferFrom(from, to, id);
require(
to.code.length == 0 ||
ERC721TokenReceiver(to).onERC721Received(msg.sender, from, id, "") ==
ERC721TokenReceiver.onERC721Received.selector,
"UNSAFE_RECIPIENT"
);
}
function safeTransferFrom(
address from,
address to,
uint256 id,
bytes memory data
) public virtual {
transferFrom(from, to, id);
require(
to.code.length == 0 ||
ERC721TokenReceiver(to).onERC721Received(msg.sender, from, id, data) ==
ERC721TokenReceiver.onERC721Received.selector,
"UNSAFE_RECIPIENT"
);
}
/*///////////////////////////////////////////////////////////////
ERC165 LOGIC
//////////////////////////////////////////////////////////////*/
function supportsInterface(bytes4 interfaceId) public pure virtual returns (bool) {
return
interfaceId == 0x01ffc9a7 || // ERC165 Interface ID for ERC165
interfaceId == 0x80ac58cd || // ERC165 Interface ID for ERC721
interfaceId == 0x5b5e139f; // ERC165 Interface ID for ERC721Metadata
}
/*///////////////////////////////////////////////////////////////
INTERNAL MINT/BURN LOGIC
//////////////////////////////////////////////////////////////*/
function _mint(address to, uint256 id) internal virtual {
require(to != address(0), "INVALID_RECIPIENT");
require(ownerOf[id] == address(0), "ALREADY_MINTED");
// Counter overflow is incredibly unrealistic.
unchecked {
balanceOf[to]++;
}
ownerOf[id] = to;
emit Transfer(address(0), to, id);
}
function _burn(uint256 id) internal virtual {
address owner = ownerOf[id];
require(ownerOf[id] != address(0), "NOT_MINTED");
// Ownership check above ensures no underflow.
unchecked {
balanceOf[owner]--;
}
delete ownerOf[id];
delete getApproved[id];
emit Transfer(owner, address(0), id);
}
/*///////////////////////////////////////////////////////////////
INTERNAL SAFE MINT LOGIC
//////////////////////////////////////////////////////////////*/
function _safeMint(address to, uint256 id) internal virtual {
_mint(to, id);
require(
to.code.length == 0 ||
ERC721TokenReceiver(to).onERC721Received(msg.sender, address(0), id, "") ==
ERC721TokenReceiver.onERC721Received.selector,
"UNSAFE_RECIPIENT"
);
}
function _safeMint(
address to,
uint256 id,
bytes memory data
) internal virtual {
_mint(to, id);
require(
to.code.length == 0 ||
ERC721TokenReceiver(to).onERC721Received(msg.sender, address(0), id, data) ==
ERC721TokenReceiver.onERC721Received.selector,
"UNSAFE_RECIPIENT"
);
}
} | /// @notice Modern, minimalist, and gas efficient ERC-721 implementation.
/// @author Solmate (https://github.com/Rari-Capital/solmate/blob/main/src/tokens/ERC721.sol)
/// @dev Note that balanceOf does not revert if passed the zero address, in defiance of the ERC. | NatSpecSingleLine | approve | function approve(address spender, uint256 id) public virtual {
address owner = ownerOf[id];
require(msg.sender == owner || isApprovedForAll[owner][msg.sender], "NOT_AUTHORIZED");
getApproved[id] = spender;
emit Approval(owner, spender, id);
}
| /*///////////////////////////////////////////////////////////////
ERC721 LOGIC
//////////////////////////////////////////////////////////////*/ | Comment | v0.8.10+commit.fc410830 | {
"func_code_index": [
1708,
1993
]
} | 8,643 |
||
EthTime | EthTime.sol | 0xe339d6f5a42e581dce5a479fca0ed02248a6dca4 | Solidity | ERC721 | abstract contract ERC721 {
/*///////////////////////////////////////////////////////////////
EVENTS
//////////////////////////////////////////////////////////////*/
event Transfer(address indexed from, address indexed to, uint256 indexed id);
event Approval(address indexed owner, address indexed spender, uint256 indexed id);
event ApprovalForAll(address indexed owner, address indexed operator, bool approved);
/*///////////////////////////////////////////////////////////////
METADATA STORAGE/LOGIC
//////////////////////////////////////////////////////////////*/
string public name;
string public symbol;
function tokenURI(uint256 id) public view virtual returns (string memory);
/*///////////////////////////////////////////////////////////////
ERC721 STORAGE
//////////////////////////////////////////////////////////////*/
mapping(address => uint256) public balanceOf;
mapping(uint256 => address) public ownerOf;
mapping(uint256 => address) public getApproved;
mapping(address => mapping(address => bool)) public isApprovedForAll;
/*///////////////////////////////////////////////////////////////
CONSTRUCTOR
//////////////////////////////////////////////////////////////*/
constructor(string memory _name, string memory _symbol) {
name = _name;
symbol = _symbol;
}
/*///////////////////////////////////////////////////////////////
ERC721 LOGIC
//////////////////////////////////////////////////////////////*/
function approve(address spender, uint256 id) public virtual {
address owner = ownerOf[id];
require(msg.sender == owner || isApprovedForAll[owner][msg.sender], "NOT_AUTHORIZED");
getApproved[id] = spender;
emit Approval(owner, spender, id);
}
function setApprovalForAll(address operator, bool approved) public virtual {
isApprovedForAll[msg.sender][operator] = approved;
emit ApprovalForAll(msg.sender, operator, approved);
}
function transferFrom(
address from,
address to,
uint256 id
) public virtual {
require(from == ownerOf[id], "WRONG_FROM");
require(to != address(0), "INVALID_RECIPIENT");
require(
msg.sender == from || msg.sender == getApproved[id] || isApprovedForAll[from][msg.sender],
"NOT_AUTHORIZED"
);
// Underflow of the sender's balance is impossible because we check for
// ownership above and the recipient's balance can't realistically overflow.
unchecked {
balanceOf[from]--;
balanceOf[to]++;
}
ownerOf[id] = to;
delete getApproved[id];
emit Transfer(from, to, id);
}
function safeTransferFrom(
address from,
address to,
uint256 id
) public virtual {
transferFrom(from, to, id);
require(
to.code.length == 0 ||
ERC721TokenReceiver(to).onERC721Received(msg.sender, from, id, "") ==
ERC721TokenReceiver.onERC721Received.selector,
"UNSAFE_RECIPIENT"
);
}
function safeTransferFrom(
address from,
address to,
uint256 id,
bytes memory data
) public virtual {
transferFrom(from, to, id);
require(
to.code.length == 0 ||
ERC721TokenReceiver(to).onERC721Received(msg.sender, from, id, data) ==
ERC721TokenReceiver.onERC721Received.selector,
"UNSAFE_RECIPIENT"
);
}
/*///////////////////////////////////////////////////////////////
ERC165 LOGIC
//////////////////////////////////////////////////////////////*/
function supportsInterface(bytes4 interfaceId) public pure virtual returns (bool) {
return
interfaceId == 0x01ffc9a7 || // ERC165 Interface ID for ERC165
interfaceId == 0x80ac58cd || // ERC165 Interface ID for ERC721
interfaceId == 0x5b5e139f; // ERC165 Interface ID for ERC721Metadata
}
/*///////////////////////////////////////////////////////////////
INTERNAL MINT/BURN LOGIC
//////////////////////////////////////////////////////////////*/
function _mint(address to, uint256 id) internal virtual {
require(to != address(0), "INVALID_RECIPIENT");
require(ownerOf[id] == address(0), "ALREADY_MINTED");
// Counter overflow is incredibly unrealistic.
unchecked {
balanceOf[to]++;
}
ownerOf[id] = to;
emit Transfer(address(0), to, id);
}
function _burn(uint256 id) internal virtual {
address owner = ownerOf[id];
require(ownerOf[id] != address(0), "NOT_MINTED");
// Ownership check above ensures no underflow.
unchecked {
balanceOf[owner]--;
}
delete ownerOf[id];
delete getApproved[id];
emit Transfer(owner, address(0), id);
}
/*///////////////////////////////////////////////////////////////
INTERNAL SAFE MINT LOGIC
//////////////////////////////////////////////////////////////*/
function _safeMint(address to, uint256 id) internal virtual {
_mint(to, id);
require(
to.code.length == 0 ||
ERC721TokenReceiver(to).onERC721Received(msg.sender, address(0), id, "") ==
ERC721TokenReceiver.onERC721Received.selector,
"UNSAFE_RECIPIENT"
);
}
function _safeMint(
address to,
uint256 id,
bytes memory data
) internal virtual {
_mint(to, id);
require(
to.code.length == 0 ||
ERC721TokenReceiver(to).onERC721Received(msg.sender, address(0), id, data) ==
ERC721TokenReceiver.onERC721Received.selector,
"UNSAFE_RECIPIENT"
);
}
} | /// @notice Modern, minimalist, and gas efficient ERC-721 implementation.
/// @author Solmate (https://github.com/Rari-Capital/solmate/blob/main/src/tokens/ERC721.sol)
/// @dev Note that balanceOf does not revert if passed the zero address, in defiance of the ERC. | NatSpecSingleLine | supportsInterface | function supportsInterface(bytes4 interfaceId) public pure virtual returns (bool) {
return
interfaceId == 0x01ffc9a7 || // ERC165 Interface ID for ERC165
interfaceId == 0x80ac58cd || // ERC165 Interface ID for ERC721
interfaceId == 0x5b5e139f; // ERC165 Interface ID for ERC721Metadata
}
| /*///////////////////////////////////////////////////////////////
ERC165 LOGIC
//////////////////////////////////////////////////////////////*/ | Comment | v0.8.10+commit.fc410830 | {
"func_code_index": [
3963,
4302
]
} | 8,644 |
||
EthTime | EthTime.sol | 0xe339d6f5a42e581dce5a479fca0ed02248a6dca4 | Solidity | ERC721 | abstract contract ERC721 {
/*///////////////////////////////////////////////////////////////
EVENTS
//////////////////////////////////////////////////////////////*/
event Transfer(address indexed from, address indexed to, uint256 indexed id);
event Approval(address indexed owner, address indexed spender, uint256 indexed id);
event ApprovalForAll(address indexed owner, address indexed operator, bool approved);
/*///////////////////////////////////////////////////////////////
METADATA STORAGE/LOGIC
//////////////////////////////////////////////////////////////*/
string public name;
string public symbol;
function tokenURI(uint256 id) public view virtual returns (string memory);
/*///////////////////////////////////////////////////////////////
ERC721 STORAGE
//////////////////////////////////////////////////////////////*/
mapping(address => uint256) public balanceOf;
mapping(uint256 => address) public ownerOf;
mapping(uint256 => address) public getApproved;
mapping(address => mapping(address => bool)) public isApprovedForAll;
/*///////////////////////////////////////////////////////////////
CONSTRUCTOR
//////////////////////////////////////////////////////////////*/
constructor(string memory _name, string memory _symbol) {
name = _name;
symbol = _symbol;
}
/*///////////////////////////////////////////////////////////////
ERC721 LOGIC
//////////////////////////////////////////////////////////////*/
function approve(address spender, uint256 id) public virtual {
address owner = ownerOf[id];
require(msg.sender == owner || isApprovedForAll[owner][msg.sender], "NOT_AUTHORIZED");
getApproved[id] = spender;
emit Approval(owner, spender, id);
}
function setApprovalForAll(address operator, bool approved) public virtual {
isApprovedForAll[msg.sender][operator] = approved;
emit ApprovalForAll(msg.sender, operator, approved);
}
function transferFrom(
address from,
address to,
uint256 id
) public virtual {
require(from == ownerOf[id], "WRONG_FROM");
require(to != address(0), "INVALID_RECIPIENT");
require(
msg.sender == from || msg.sender == getApproved[id] || isApprovedForAll[from][msg.sender],
"NOT_AUTHORIZED"
);
// Underflow of the sender's balance is impossible because we check for
// ownership above and the recipient's balance can't realistically overflow.
unchecked {
balanceOf[from]--;
balanceOf[to]++;
}
ownerOf[id] = to;
delete getApproved[id];
emit Transfer(from, to, id);
}
function safeTransferFrom(
address from,
address to,
uint256 id
) public virtual {
transferFrom(from, to, id);
require(
to.code.length == 0 ||
ERC721TokenReceiver(to).onERC721Received(msg.sender, from, id, "") ==
ERC721TokenReceiver.onERC721Received.selector,
"UNSAFE_RECIPIENT"
);
}
function safeTransferFrom(
address from,
address to,
uint256 id,
bytes memory data
) public virtual {
transferFrom(from, to, id);
require(
to.code.length == 0 ||
ERC721TokenReceiver(to).onERC721Received(msg.sender, from, id, data) ==
ERC721TokenReceiver.onERC721Received.selector,
"UNSAFE_RECIPIENT"
);
}
/*///////////////////////////////////////////////////////////////
ERC165 LOGIC
//////////////////////////////////////////////////////////////*/
function supportsInterface(bytes4 interfaceId) public pure virtual returns (bool) {
return
interfaceId == 0x01ffc9a7 || // ERC165 Interface ID for ERC165
interfaceId == 0x80ac58cd || // ERC165 Interface ID for ERC721
interfaceId == 0x5b5e139f; // ERC165 Interface ID for ERC721Metadata
}
/*///////////////////////////////////////////////////////////////
INTERNAL MINT/BURN LOGIC
//////////////////////////////////////////////////////////////*/
function _mint(address to, uint256 id) internal virtual {
require(to != address(0), "INVALID_RECIPIENT");
require(ownerOf[id] == address(0), "ALREADY_MINTED");
// Counter overflow is incredibly unrealistic.
unchecked {
balanceOf[to]++;
}
ownerOf[id] = to;
emit Transfer(address(0), to, id);
}
function _burn(uint256 id) internal virtual {
address owner = ownerOf[id];
require(ownerOf[id] != address(0), "NOT_MINTED");
// Ownership check above ensures no underflow.
unchecked {
balanceOf[owner]--;
}
delete ownerOf[id];
delete getApproved[id];
emit Transfer(owner, address(0), id);
}
/*///////////////////////////////////////////////////////////////
INTERNAL SAFE MINT LOGIC
//////////////////////////////////////////////////////////////*/
function _safeMint(address to, uint256 id) internal virtual {
_mint(to, id);
require(
to.code.length == 0 ||
ERC721TokenReceiver(to).onERC721Received(msg.sender, address(0), id, "") ==
ERC721TokenReceiver.onERC721Received.selector,
"UNSAFE_RECIPIENT"
);
}
function _safeMint(
address to,
uint256 id,
bytes memory data
) internal virtual {
_mint(to, id);
require(
to.code.length == 0 ||
ERC721TokenReceiver(to).onERC721Received(msg.sender, address(0), id, data) ==
ERC721TokenReceiver.onERC721Received.selector,
"UNSAFE_RECIPIENT"
);
}
} | /// @notice Modern, minimalist, and gas efficient ERC-721 implementation.
/// @author Solmate (https://github.com/Rari-Capital/solmate/blob/main/src/tokens/ERC721.sol)
/// @dev Note that balanceOf does not revert if passed the zero address, in defiance of the ERC. | NatSpecSingleLine | _mint | function _mint(address to, uint256 id) internal virtual {
require(to != address(0), "INVALID_RECIPIENT");
require(ownerOf[id] == address(0), "ALREADY_MINTED");
// Counter overflow is incredibly unrealistic.
unchecked {
balanceOf[to]++;
}
ownerOf[id] = to;
emit Transfer(address(0), to, id);
}
| /*///////////////////////////////////////////////////////////////
INTERNAL MINT/BURN LOGIC
//////////////////////////////////////////////////////////////*/ | Comment | v0.8.10+commit.fc410830 | {
"func_code_index": [
4492,
4864
]
} | 8,645 |
||
EthTime | EthTime.sol | 0xe339d6f5a42e581dce5a479fca0ed02248a6dca4 | Solidity | ERC721 | abstract contract ERC721 {
/*///////////////////////////////////////////////////////////////
EVENTS
//////////////////////////////////////////////////////////////*/
event Transfer(address indexed from, address indexed to, uint256 indexed id);
event Approval(address indexed owner, address indexed spender, uint256 indexed id);
event ApprovalForAll(address indexed owner, address indexed operator, bool approved);
/*///////////////////////////////////////////////////////////////
METADATA STORAGE/LOGIC
//////////////////////////////////////////////////////////////*/
string public name;
string public symbol;
function tokenURI(uint256 id) public view virtual returns (string memory);
/*///////////////////////////////////////////////////////////////
ERC721 STORAGE
//////////////////////////////////////////////////////////////*/
mapping(address => uint256) public balanceOf;
mapping(uint256 => address) public ownerOf;
mapping(uint256 => address) public getApproved;
mapping(address => mapping(address => bool)) public isApprovedForAll;
/*///////////////////////////////////////////////////////////////
CONSTRUCTOR
//////////////////////////////////////////////////////////////*/
constructor(string memory _name, string memory _symbol) {
name = _name;
symbol = _symbol;
}
/*///////////////////////////////////////////////////////////////
ERC721 LOGIC
//////////////////////////////////////////////////////////////*/
function approve(address spender, uint256 id) public virtual {
address owner = ownerOf[id];
require(msg.sender == owner || isApprovedForAll[owner][msg.sender], "NOT_AUTHORIZED");
getApproved[id] = spender;
emit Approval(owner, spender, id);
}
function setApprovalForAll(address operator, bool approved) public virtual {
isApprovedForAll[msg.sender][operator] = approved;
emit ApprovalForAll(msg.sender, operator, approved);
}
function transferFrom(
address from,
address to,
uint256 id
) public virtual {
require(from == ownerOf[id], "WRONG_FROM");
require(to != address(0), "INVALID_RECIPIENT");
require(
msg.sender == from || msg.sender == getApproved[id] || isApprovedForAll[from][msg.sender],
"NOT_AUTHORIZED"
);
// Underflow of the sender's balance is impossible because we check for
// ownership above and the recipient's balance can't realistically overflow.
unchecked {
balanceOf[from]--;
balanceOf[to]++;
}
ownerOf[id] = to;
delete getApproved[id];
emit Transfer(from, to, id);
}
function safeTransferFrom(
address from,
address to,
uint256 id
) public virtual {
transferFrom(from, to, id);
require(
to.code.length == 0 ||
ERC721TokenReceiver(to).onERC721Received(msg.sender, from, id, "") ==
ERC721TokenReceiver.onERC721Received.selector,
"UNSAFE_RECIPIENT"
);
}
function safeTransferFrom(
address from,
address to,
uint256 id,
bytes memory data
) public virtual {
transferFrom(from, to, id);
require(
to.code.length == 0 ||
ERC721TokenReceiver(to).onERC721Received(msg.sender, from, id, data) ==
ERC721TokenReceiver.onERC721Received.selector,
"UNSAFE_RECIPIENT"
);
}
/*///////////////////////////////////////////////////////////////
ERC165 LOGIC
//////////////////////////////////////////////////////////////*/
function supportsInterface(bytes4 interfaceId) public pure virtual returns (bool) {
return
interfaceId == 0x01ffc9a7 || // ERC165 Interface ID for ERC165
interfaceId == 0x80ac58cd || // ERC165 Interface ID for ERC721
interfaceId == 0x5b5e139f; // ERC165 Interface ID for ERC721Metadata
}
/*///////////////////////////////////////////////////////////////
INTERNAL MINT/BURN LOGIC
//////////////////////////////////////////////////////////////*/
function _mint(address to, uint256 id) internal virtual {
require(to != address(0), "INVALID_RECIPIENT");
require(ownerOf[id] == address(0), "ALREADY_MINTED");
// Counter overflow is incredibly unrealistic.
unchecked {
balanceOf[to]++;
}
ownerOf[id] = to;
emit Transfer(address(0), to, id);
}
function _burn(uint256 id) internal virtual {
address owner = ownerOf[id];
require(ownerOf[id] != address(0), "NOT_MINTED");
// Ownership check above ensures no underflow.
unchecked {
balanceOf[owner]--;
}
delete ownerOf[id];
delete getApproved[id];
emit Transfer(owner, address(0), id);
}
/*///////////////////////////////////////////////////////////////
INTERNAL SAFE MINT LOGIC
//////////////////////////////////////////////////////////////*/
function _safeMint(address to, uint256 id) internal virtual {
_mint(to, id);
require(
to.code.length == 0 ||
ERC721TokenReceiver(to).onERC721Received(msg.sender, address(0), id, "") ==
ERC721TokenReceiver.onERC721Received.selector,
"UNSAFE_RECIPIENT"
);
}
function _safeMint(
address to,
uint256 id,
bytes memory data
) internal virtual {
_mint(to, id);
require(
to.code.length == 0 ||
ERC721TokenReceiver(to).onERC721Received(msg.sender, address(0), id, data) ==
ERC721TokenReceiver.onERC721Received.selector,
"UNSAFE_RECIPIENT"
);
}
} | /// @notice Modern, minimalist, and gas efficient ERC-721 implementation.
/// @author Solmate (https://github.com/Rari-Capital/solmate/blob/main/src/tokens/ERC721.sol)
/// @dev Note that balanceOf does not revert if passed the zero address, in defiance of the ERC. | NatSpecSingleLine | _safeMint | function _safeMint(address to, uint256 id) internal virtual {
_mint(to, id);
require(
to.code.length == 0 ||
ERC721TokenReceiver(to).onERC721Received(msg.sender, address(0), id, "") ==
ERC721TokenReceiver.onERC721Received.selector,
"UNSAFE_RECIPIENT"
);
}
| /*///////////////////////////////////////////////////////////////
INTERNAL SAFE MINT LOGIC
//////////////////////////////////////////////////////////////*/ | Comment | v0.8.10+commit.fc410830 | {
"func_code_index": [
5434,
5778
]
} | 8,646 |
||
EthTime | EthTime.sol | 0xe339d6f5a42e581dce5a479fca0ed02248a6dca4 | Solidity | CharitySplitter | contract CharitySplitter {
//////////////////////////////////////////////////////////////////////////
// //
// Constructor //
// //
//////////////////////////////////////////////////////////////////////////
/// @dev Charity address, can be changed with a time-lock.
address payable public charity;
/// @dev Charity fee, in basis points. 1% = 100 bp.
uint256 public charityFeeBp;
constructor(address payable _charity, uint256 _charityFeeBp) {
// checks: address not zero. Don't want to burn eth.
if (_charity == address(0)) {
revert CharitySplitter__InvalidCharityAddress();
}
// checks: fee > 0%. Don't want to deal with no fee edge cases.
if (_charityFeeBp == 0) {
revert CharitySplitter__InvalidCharityFee();
}
charity = _charity;
charityFeeBp = _charityFeeBp;
}
//////////////////////////////////////////////////////////////////////////
// //
// Charity Address Management //
// //
//////////////////////////////////////////////////////////////////////////
/// @dev Emitted when the charity address is updated.
event CharityUpdated(address charity);
/// @dev Update the charity address.
function _updateCharity(address payable _charity)
internal
{
if (_charity == address(0)) {
revert CharitySplitter__InvalidCharityAddress();
}
charity = _charity;
}
//////////////////////////////////////////////////////////////////////////
// //
// Profit Tracking //
// //
//////////////////////////////////////////////////////////////////////////
/// @dev Balance owed to the charity.
uint256 public charityBalance;
/// @dev Balance owed to the owner.
uint256 public ownerBalance;
/// @dev Denominator used when computing fee. 100% in bp.
uint256 private constant BP_DENOMINATOR = 10000;
/// @dev Update charity and owner balance.
function _updateBalance(uint256 value)
internal
{
// checks: if value is zero nothing to update.
if (value == 0) {
return;
}
uint256 charityValue = (value * charityFeeBp) / BP_DENOMINATOR;
uint256 ownerValue = value - charityValue;
// effects: update balances.
charityBalance += charityValue;
ownerBalance += ownerValue;
}
//////////////////////////////////////////////////////////////////////////
// //
// Withdrawing Funds //
// //
//////////////////////////////////////////////////////////////////////////
/// @notice Withdraw funds to charity address.
function _withdrawCharityBalance()
internal
{
uint256 value = charityBalance;
// checks: no money to withdraw.
if (value == 0) {
return;
}
// effects: reset charity balance to zero.
charityBalance = 0;
// interactions: send money to charity address.
(bool sent, ) = charity.call{value: value}("");
require(sent);
}
/// @notice Withdraw funds to owner address.
/// @param destination the address that receives the funds.
function _withdrawOwnerBalance(address payable destination)
internal
{
uint256 value = ownerBalance;
// checks: no money to withdraw.
if (value == 0) {
return;
}
// effects: reset owner balance to zero.
ownerBalance = 0;
// interactions: send money to destination address.
(bool sent, ) = destination.call{value: value}("");
require(sent);
}
} | /// @notice Tracks splitting profits with a charity.
/// @dev This module essentialy does two things:
/// * Tracks how much money goes to the charity and how much to someone else.
/// * Implements a simple time-lock to avoid the contract owner changing the
/// charity address to one they own.
///
/// Anyone can call the method to send the funds to the charity. | NatSpecSingleLine | _updateCharity | function _updateCharity(address payable _charity)
internal
{
if (_charity == address(0)) {
revert CharitySplitter__InvalidCharityAddress();
}
charity = _charity;
}
| /// @dev Update the charity address. | NatSpecSingleLine | v0.8.10+commit.fc410830 | {
"func_code_index": [
1637,
1857
]
} | 8,647 |
||
EthTime | EthTime.sol | 0xe339d6f5a42e581dce5a479fca0ed02248a6dca4 | Solidity | CharitySplitter | contract CharitySplitter {
//////////////////////////////////////////////////////////////////////////
// //
// Constructor //
// //
//////////////////////////////////////////////////////////////////////////
/// @dev Charity address, can be changed with a time-lock.
address payable public charity;
/// @dev Charity fee, in basis points. 1% = 100 bp.
uint256 public charityFeeBp;
constructor(address payable _charity, uint256 _charityFeeBp) {
// checks: address not zero. Don't want to burn eth.
if (_charity == address(0)) {
revert CharitySplitter__InvalidCharityAddress();
}
// checks: fee > 0%. Don't want to deal with no fee edge cases.
if (_charityFeeBp == 0) {
revert CharitySplitter__InvalidCharityFee();
}
charity = _charity;
charityFeeBp = _charityFeeBp;
}
//////////////////////////////////////////////////////////////////////////
// //
// Charity Address Management //
// //
//////////////////////////////////////////////////////////////////////////
/// @dev Emitted when the charity address is updated.
event CharityUpdated(address charity);
/// @dev Update the charity address.
function _updateCharity(address payable _charity)
internal
{
if (_charity == address(0)) {
revert CharitySplitter__InvalidCharityAddress();
}
charity = _charity;
}
//////////////////////////////////////////////////////////////////////////
// //
// Profit Tracking //
// //
//////////////////////////////////////////////////////////////////////////
/// @dev Balance owed to the charity.
uint256 public charityBalance;
/// @dev Balance owed to the owner.
uint256 public ownerBalance;
/// @dev Denominator used when computing fee. 100% in bp.
uint256 private constant BP_DENOMINATOR = 10000;
/// @dev Update charity and owner balance.
function _updateBalance(uint256 value)
internal
{
// checks: if value is zero nothing to update.
if (value == 0) {
return;
}
uint256 charityValue = (value * charityFeeBp) / BP_DENOMINATOR;
uint256 ownerValue = value - charityValue;
// effects: update balances.
charityBalance += charityValue;
ownerBalance += ownerValue;
}
//////////////////////////////////////////////////////////////////////////
// //
// Withdrawing Funds //
// //
//////////////////////////////////////////////////////////////////////////
/// @notice Withdraw funds to charity address.
function _withdrawCharityBalance()
internal
{
uint256 value = charityBalance;
// checks: no money to withdraw.
if (value == 0) {
return;
}
// effects: reset charity balance to zero.
charityBalance = 0;
// interactions: send money to charity address.
(bool sent, ) = charity.call{value: value}("");
require(sent);
}
/// @notice Withdraw funds to owner address.
/// @param destination the address that receives the funds.
function _withdrawOwnerBalance(address payable destination)
internal
{
uint256 value = ownerBalance;
// checks: no money to withdraw.
if (value == 0) {
return;
}
// effects: reset owner balance to zero.
ownerBalance = 0;
// interactions: send money to destination address.
(bool sent, ) = destination.call{value: value}("");
require(sent);
}
} | /// @notice Tracks splitting profits with a charity.
/// @dev This module essentialy does two things:
/// * Tracks how much money goes to the charity and how much to someone else.
/// * Implements a simple time-lock to avoid the contract owner changing the
/// charity address to one they own.
///
/// Anyone can call the method to send the funds to the charity. | NatSpecSingleLine | _updateBalance | function _updateBalance(uint256 value)
internal
{
// checks: if value is zero nothing to update.
if (value == 0) {
return;
}
uint256 charityValue = (value * charityFeeBp) / BP_DENOMINATOR;
uint256 ownerValue = value - charityValue;
// effects: update balances.
charityBalance += charityValue;
ownerBalance += ownerValue;
}
| /// @dev Update charity and owner balance. | NatSpecSingleLine | v0.8.10+commit.fc410830 | {
"func_code_index": [
2570,
2990
]
} | 8,648 |
||
EthTime | EthTime.sol | 0xe339d6f5a42e581dce5a479fca0ed02248a6dca4 | Solidity | CharitySplitter | contract CharitySplitter {
//////////////////////////////////////////////////////////////////////////
// //
// Constructor //
// //
//////////////////////////////////////////////////////////////////////////
/// @dev Charity address, can be changed with a time-lock.
address payable public charity;
/// @dev Charity fee, in basis points. 1% = 100 bp.
uint256 public charityFeeBp;
constructor(address payable _charity, uint256 _charityFeeBp) {
// checks: address not zero. Don't want to burn eth.
if (_charity == address(0)) {
revert CharitySplitter__InvalidCharityAddress();
}
// checks: fee > 0%. Don't want to deal with no fee edge cases.
if (_charityFeeBp == 0) {
revert CharitySplitter__InvalidCharityFee();
}
charity = _charity;
charityFeeBp = _charityFeeBp;
}
//////////////////////////////////////////////////////////////////////////
// //
// Charity Address Management //
// //
//////////////////////////////////////////////////////////////////////////
/// @dev Emitted when the charity address is updated.
event CharityUpdated(address charity);
/// @dev Update the charity address.
function _updateCharity(address payable _charity)
internal
{
if (_charity == address(0)) {
revert CharitySplitter__InvalidCharityAddress();
}
charity = _charity;
}
//////////////////////////////////////////////////////////////////////////
// //
// Profit Tracking //
// //
//////////////////////////////////////////////////////////////////////////
/// @dev Balance owed to the charity.
uint256 public charityBalance;
/// @dev Balance owed to the owner.
uint256 public ownerBalance;
/// @dev Denominator used when computing fee. 100% in bp.
uint256 private constant BP_DENOMINATOR = 10000;
/// @dev Update charity and owner balance.
function _updateBalance(uint256 value)
internal
{
// checks: if value is zero nothing to update.
if (value == 0) {
return;
}
uint256 charityValue = (value * charityFeeBp) / BP_DENOMINATOR;
uint256 ownerValue = value - charityValue;
// effects: update balances.
charityBalance += charityValue;
ownerBalance += ownerValue;
}
//////////////////////////////////////////////////////////////////////////
// //
// Withdrawing Funds //
// //
//////////////////////////////////////////////////////////////////////////
/// @notice Withdraw funds to charity address.
function _withdrawCharityBalance()
internal
{
uint256 value = charityBalance;
// checks: no money to withdraw.
if (value == 0) {
return;
}
// effects: reset charity balance to zero.
charityBalance = 0;
// interactions: send money to charity address.
(bool sent, ) = charity.call{value: value}("");
require(sent);
}
/// @notice Withdraw funds to owner address.
/// @param destination the address that receives the funds.
function _withdrawOwnerBalance(address payable destination)
internal
{
uint256 value = ownerBalance;
// checks: no money to withdraw.
if (value == 0) {
return;
}
// effects: reset owner balance to zero.
ownerBalance = 0;
// interactions: send money to destination address.
(bool sent, ) = destination.call{value: value}("");
require(sent);
}
} | /// @notice Tracks splitting profits with a charity.
/// @dev This module essentialy does two things:
/// * Tracks how much money goes to the charity and how much to someone else.
/// * Implements a simple time-lock to avoid the contract owner changing the
/// charity address to one they own.
///
/// Anyone can call the method to send the funds to the charity. | NatSpecSingleLine | _withdrawCharityBalance | function _withdrawCharityBalance()
internal
{
uint256 value = charityBalance;
// checks: no money to withdraw.
if (value == 0) {
return;
}
// effects: reset charity balance to zero.
charityBalance = 0;
// interactions: send money to charity address.
(bool sent, ) = charity.call{value: value}("");
require(sent);
}
| //////////////////////////////////////////////////////////////////////////
/// @notice Withdraw funds to charity address. | NatSpecSingleLine | v0.8.10+commit.fc410830 | {
"func_code_index": [
3439,
3860
]
} | 8,649 |
||
EthTime | EthTime.sol | 0xe339d6f5a42e581dce5a479fca0ed02248a6dca4 | Solidity | CharitySplitter | contract CharitySplitter {
//////////////////////////////////////////////////////////////////////////
// //
// Constructor //
// //
//////////////////////////////////////////////////////////////////////////
/// @dev Charity address, can be changed with a time-lock.
address payable public charity;
/// @dev Charity fee, in basis points. 1% = 100 bp.
uint256 public charityFeeBp;
constructor(address payable _charity, uint256 _charityFeeBp) {
// checks: address not zero. Don't want to burn eth.
if (_charity == address(0)) {
revert CharitySplitter__InvalidCharityAddress();
}
// checks: fee > 0%. Don't want to deal with no fee edge cases.
if (_charityFeeBp == 0) {
revert CharitySplitter__InvalidCharityFee();
}
charity = _charity;
charityFeeBp = _charityFeeBp;
}
//////////////////////////////////////////////////////////////////////////
// //
// Charity Address Management //
// //
//////////////////////////////////////////////////////////////////////////
/// @dev Emitted when the charity address is updated.
event CharityUpdated(address charity);
/// @dev Update the charity address.
function _updateCharity(address payable _charity)
internal
{
if (_charity == address(0)) {
revert CharitySplitter__InvalidCharityAddress();
}
charity = _charity;
}
//////////////////////////////////////////////////////////////////////////
// //
// Profit Tracking //
// //
//////////////////////////////////////////////////////////////////////////
/// @dev Balance owed to the charity.
uint256 public charityBalance;
/// @dev Balance owed to the owner.
uint256 public ownerBalance;
/// @dev Denominator used when computing fee. 100% in bp.
uint256 private constant BP_DENOMINATOR = 10000;
/// @dev Update charity and owner balance.
function _updateBalance(uint256 value)
internal
{
// checks: if value is zero nothing to update.
if (value == 0) {
return;
}
uint256 charityValue = (value * charityFeeBp) / BP_DENOMINATOR;
uint256 ownerValue = value - charityValue;
// effects: update balances.
charityBalance += charityValue;
ownerBalance += ownerValue;
}
//////////////////////////////////////////////////////////////////////////
// //
// Withdrawing Funds //
// //
//////////////////////////////////////////////////////////////////////////
/// @notice Withdraw funds to charity address.
function _withdrawCharityBalance()
internal
{
uint256 value = charityBalance;
// checks: no money to withdraw.
if (value == 0) {
return;
}
// effects: reset charity balance to zero.
charityBalance = 0;
// interactions: send money to charity address.
(bool sent, ) = charity.call{value: value}("");
require(sent);
}
/// @notice Withdraw funds to owner address.
/// @param destination the address that receives the funds.
function _withdrawOwnerBalance(address payable destination)
internal
{
uint256 value = ownerBalance;
// checks: no money to withdraw.
if (value == 0) {
return;
}
// effects: reset owner balance to zero.
ownerBalance = 0;
// interactions: send money to destination address.
(bool sent, ) = destination.call{value: value}("");
require(sent);
}
} | /// @notice Tracks splitting profits with a charity.
/// @dev This module essentialy does two things:
/// * Tracks how much money goes to the charity and how much to someone else.
/// * Implements a simple time-lock to avoid the contract owner changing the
/// charity address to one they own.
///
/// Anyone can call the method to send the funds to the charity. | NatSpecSingleLine | _withdrawOwnerBalance | function _withdrawOwnerBalance(address payable destination)
internal
{
uint256 value = ownerBalance;
// checks: no money to withdraw.
if (value == 0) {
return;
}
// effects: reset owner balance to zero.
ownerBalance = 0;
// interactions: send money to destination address.
(bool sent, ) = destination.call{value: value}("");
require(sent);
}
| /// @notice Withdraw funds to owner address.
/// @param destination the address that receives the funds. | NatSpecSingleLine | v0.8.10+commit.fc410830 | {
"func_code_index": [
3975,
4423
]
} | 8,650 |
||
EthTime | EthTime.sol | 0xe339d6f5a42e581dce5a479fca0ed02248a6dca4 | Solidity | EthTime | contract EthTime is ERC721, CharitySplitter, Ownable, ReentrancyGuard {
//////////////////////////////////////////////////////////////////////////
// //
// Constructor //
// //
//////////////////////////////////////////////////////////////////////////
constructor(address payable charity, uint256 charityFeeBp)
ERC721("ETH Time", "ETHT")
CharitySplitter(charity, charityFeeBp)
{
}
receive() external payable {}
//////////////////////////////////////////////////////////////////////////
// //
// Transfer with History //
// //
//////////////////////////////////////////////////////////////////////////
/// @notice The state of each NFT.
mapping(uint256 => uint160) public historyAccumulator;
function transferFrom(address from, address to, uint256 id)
public
nonReentrant
override
{
_transferFrom(from, to, id);
}
function safeTransferFrom(address from, address to, uint256 id)
public
nonReentrant
override
{
_transferFrom(from, to, id);
// interactions: check destination can handle ERC721
require(
to.code.length == 0 ||
ERC721TokenReceiver(to).onERC721Received(msg.sender, from, id, "") ==
ERC721TokenReceiver.onERC721Received.selector,
"UNSAFE_RECIPIENT"
);
}
function safeTransferFrom(address from, address to, uint256 id, bytes memory /* data */)
public
nonReentrant
override
{
_transferFrom(from, to, id);
// interactions: check destination can handle ERC721
require(
to.code.length == 0 ||
ERC721TokenReceiver(to).onERC721Received(msg.sender, from, id, "") ==
ERC721TokenReceiver.onERC721Received.selector,
"UNSAFE_RECIPIENT"
);
}
//////////////////////////////////////////////////////////////////////////
// //
// Charity Splitter //
// //
//////////////////////////////////////////////////////////////////////////
/// @notice Withdraw charity balance to charity address.
/// @dev Anyone can call this at any time.
function withdrawCharityBalance()
public
nonReentrant
{
_withdrawCharityBalance();
}
/// @notice Withdraw owner balance to the specified address.
/// @param destination the address that receives the owner balance.
function withdrawOwnerBalance(address payable destination)
public
onlyOwner
nonReentrant
{
_withdrawOwnerBalance(destination);
}
/// @notice Update the address that receives the charity fee.
/// @param charity the new charity address.
function updateCharity(address payable charity)
public
onlyOwner
nonReentrant
{
_updateCharity(charity);
}
//////////////////////////////////////////////////////////////////////////
// //
// Timezone Management //
// //
//////////////////////////////////////////////////////////////////////////
mapping(uint256 => int128) public timeOffsetMinutes;
event TimeOffsetUpdated(uint256 indexed id, int128 offsetMinutes);
/// @notice Sets the time offset of the given token id.
/// @dev Use minutes because some timezones (like IST) are offset by half an hour.
/// @param id the NFT unique id.
/// @param offsetMinutes the offset in minutes.
function setTimeOffsetMinutes(uint256 id, int128 offsetMinutes)
public
{
// checks: id exists
if (ownerOf[id] == address(0)) {
revert EthTime__DoesNotExist();
}
// checks: sender is owner.
if (ownerOf[id] != msg.sender) {
revert EthTime__NotOwner();
}
// checks: validate time offset
_validateTimeOffset(offsetMinutes);
// effects: update time offset
timeOffsetMinutes[id] = offsetMinutes;
emit TimeOffsetUpdated(id, offsetMinutes);
}
function _validateTimeOffset(int128 offsetMinutes)
internal
{
int128 offsetSeconds = offsetMinutes * 60;
// checks: offset is [-12, +14] hours UTC
if (offsetSeconds > 14 hours || offsetSeconds < -12 hours) {
revert EthTime__InvalidTimeOffset();
}
}
//////////////////////////////////////////////////////////////////////////
// //
// Minting //
// //
//////////////////////////////////////////////////////////////////////////
/// @dev The number of tokens minted.
uint256 public totalSupply;
/// @dev The maximum number of mintable tokens.
uint256 public constant maximumSupply = 100;
uint256 private constant TARGET_PRICE = 1 ether;
uint256 private constant PRICE_INCREMENT = TARGET_PRICE / maximumSupply * 2;
/// @notice Mint a new NFT, transfering ownership to the given account.
/// @dev If the token id already exists, this method fails.
/// @param to the NFT ower.
/// @param offsetMinutes the time offset in minutes.
/// @param id the NFT unique id.
function mint(address to, int128 offsetMinutes, uint256 id)
public
payable
nonReentrant
virtual
{
// interactions: mint.
uint256 valueLeft = _mint(to, offsetMinutes, id, msg.value);
// interactions: send back leftover value.
if (valueLeft > 0) {
(bool success, ) = msg.sender.call{value: valueLeft}("");
require(success);
}
}
/// @notice Mint new NFTs, transfering ownership to the given account.
/// @dev If any of the token ids already exists, this method fails.
/// @param to the NFT ower.
/// @param offsetMinutes the time offset in minutes.
/// @param ids the NFT unique ids.
function batchMint(address to, int128 offsetMinutes, uint256[] calldata ids)
public
payable
nonReentrant
virtual
{
uint256 count = ids.length;
// checks: can mint count nfts
_validateBatchMintCount(count);
uint256 valueLeft = msg.value;
for (uint256 i = 0; i < count; i++) {
// interactions: mint.
valueLeft = _mint(to, offsetMinutes, ids[i], valueLeft);
}
// interactions: send back leftover value.
if (valueLeft > 0) {
(bool success, ) = msg.sender.call{value: valueLeft}("");
require(success);
}
}
/// @notice Get the price for minting the next `count` NFT.
function getBatchMintPrice(uint256 count)
public
view
returns (uint256)
{
// checks: can mint count nfts
_validateBatchMintCount(count);
uint256 supply = totalSupply;
uint256 price = 0;
for (uint256 i = 0; i < count; i++) {
price += _priceAtSupplyLevel(supply + i);
}
return price;
}
/// @notice Get the price for minting the next NFT.
function getMintPrice()
public
view
returns (uint256)
{
return _priceAtSupplyLevel(totalSupply);
}
function _mint(address to, int128 offsetMinutes, uint256 id, uint256 value)
internal
returns (uint256 valueLeft)
{
uint256 price = _priceAtSupplyLevel(totalSupply);
// checks: value is enough to mint the nft.
if (value < price) {
revert EthTime__InvalidMintValue();
}
// checks: minting causes going over maximum supply.
if (totalSupply == maximumSupply) {
revert EthTime__CollectionMintClosed();
}
// checks: validate offset
_validateTimeOffset(offsetMinutes);
// effects: seed history with unique starting value.
historyAccumulator[id] = uint160(id >> 4);
// effects: increment total supply.
totalSupply += 1;
// effects: update charity split.
_updateBalance(value);
// effects: set time offset
timeOffsetMinutes[id] = offsetMinutes;
// interactions: safe mint
_safeMint(to, id);
// return value left to be sent back to user.
valueLeft = value - price;
}
function _priceAtSupplyLevel(uint256 supply)
internal
pure
returns (uint256)
{
uint256 price = supply * PRICE_INCREMENT;
if (supply > 50) {
price = TARGET_PRICE;
}
return price;
}
function _validateBatchMintCount(uint256 count)
internal
view
{
// checks: no more than 10.
if (count > 10) {
revert EthTime__InvalidMintAmount();
}
// checks: minting does not push over the limit.
// notice that it would fail anyway.
if (totalSupply + count > maximumSupply) {
revert EthTime__InvalidMintAmount();
}
}
//////////////////////////////////////////////////////////////////////////
// //
// Token URI //
// //
//////////////////////////////////////////////////////////////////////////
/// @notice Returns the URI with the NFT metadata.
/// @dev Returns the base64 encoded metadata inline.
/// @param id the NFT unique id
function tokenURI(uint256 id)
public
view
override
returns (string memory)
{
if (ownerOf[id] == address(0)) {
revert EthTime__DoesNotExist();
}
string memory tokenId = Strings.toString(id);
(uint256 hour, uint256 minute) = _adjustedHourMinutes(id);
bytes memory topHue = _computeHue(historyAccumulator[id], id);
bytes memory bottomHue = _computeHue(uint160(ownerOf[id]), id);
int128 offset = timeOffsetMinutes[id];
bytes memory offsetSign = offset >= 0 ? bytes('+') : bytes('-');
uint256 offsetUnsigned = offset >= 0 ? uint256(int256(offset)) : uint256(int256(-offset));
return
string(
bytes.concat(
'data:application/json;base64,',
bytes(
Base64.encode(
bytes.concat(
'{"name": "ETH Time #',
bytes(tokenId),
'", "description": "ETH Time", "image": "data:image/svg+xml;base64,',
bytes(_tokenImage(topHue, bottomHue, hour, minute)),
'", "attributes": [{"trait_type": "top_color", "value": "hsl(', topHue, ',100%,89%)"},',
'{"trait_type": "bottom_color", "value": "hsl(', bottomHue, ',77%,36%)"},',
'{"trait_type": "time_offset", "value": "', offsetSign, bytes(Strings.toString(offsetUnsigned)), '"},',
'{"trait_type": "time", "value": "', bytes(Strings.toString(hour)), ':', bytes(Strings.toString(minute)), '"}]}'
)
)
)
)
);
}
/// @dev Generate a preview of the token that will be minted.
/// @param to the minter.
/// @param id the NFT unique id.
function tokenImagePreview(address to, uint256 id)
public
view
returns (string memory)
{
(uint256 hour, uint256 minute) = _adjustedHourMinutes(id);
bytes memory topHue = _computeHue(uint160(id >> 4), id);
bytes memory bottomHue = _computeHue(uint160(to), id);
return _tokenImage(topHue, bottomHue, hour, minute);
}
//////////////////////////////////////////////////////////////////////////
// //
// Private Functions //
// //
//////////////////////////////////////////////////////////////////////////
/// @dev Update the NFT history based on the transfer to the given account.
/// @param to the address that will receive the nft.
/// @param id the NFT unique id.
function _updateHistory(address to, uint256 id)
internal
{
// effects: xor existing value with address bytes content.
historyAccumulator[id] ^= uint160(to) << 2;
}
function _transferFrom(address from, address to, uint256 id)
internal
{
// checks: sender and destination
require(from == ownerOf[id], "WRONG_FROM");
require(to != address(0), "INVALID_RECIPIENT");
// checks: can transfer
require(
msg.sender == from || msg.sender == getApproved[id] || isApprovedForAll[from][msg.sender],
"NOT_AUTHORIZED"
);
// effects: update balance
// Underflow of the sender's balance is impossible because we check for
// ownership above and the recipient's balance can't realistically overflow.
unchecked {
balanceOf[from]--;
balanceOf[to]++;
}
// effects: update owership
ownerOf[id] = to;
// effects: reclaim storage
delete getApproved[id];
// effects: update history
_updateHistory(to, id);
emit Transfer(from, to, id);
}
bytes constant onColor = "FFF";
bytes constant offColor = "333";
/// @dev Generate the SVG image for the given NFT.
function _tokenImage(bytes memory topHue, bytes memory bottomHue, uint256 hour, uint256 minute)
internal
pure
returns (string memory)
{
return
Base64.encode(
bytes.concat(
'<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 1000 1000">',
'<linearGradient id="bg" gradientTransform="rotate(90)">',
'<stop offset="0%" stop-color="hsl(', topHue, ',100%,89%)"/>',
'<stop offset="100%" stop-color="hsl(', bottomHue, ',77%,36%)"/>',
'</linearGradient>',
'<rect x="0" y="0" width="1000" height="1000" fill="url(#bg)"/>',
_binaryHour(hour),
_binaryMinute(minute),
'</svg>'
)
);
}
function _binaryHour(uint256 hour)
internal
pure
returns (bytes memory)
{
if (hour > 24) {
revert EthTime__NumberOutOfRange();
}
bytes[7] memory colors = _binaryColor(hour);
return
bytes.concat(
'<circle cx="665" cy="875" r="25" fill="#', colors[0], '"/>',
'<circle cx="665" cy="805" r="25" fill="#', colors[1], '"/>',
// skip colors[2]
'<circle cx="735" cy="875" r="25" fill="#', colors[3], '"/>',
'<circle cx="735" cy="805" r="25" fill="#', colors[4], '"/>',
'<circle cx="735" cy="735" r="25" fill="#', colors[5], '"/>',
'<circle cx="735" cy="665" r="25" fill="#', colors[6], '"/>'
);
}
function _binaryMinute(uint256 minute)
internal
pure
returns (bytes memory)
{
if (minute > 59) {
revert EthTime__NumberOutOfRange();
}
bytes[7] memory colors = _binaryColor(minute);
return
bytes.concat(
'<circle cx="805" cy="875" r="25" fill="#', colors[0], '"/>',
'<circle cx="805" cy="805" r="25" fill="#', colors[1], '"/>',
'<circle cx="805" cy="735" r="25" fill="#', colors[2], '"/>',
'<circle cx="875" cy="875" r="25" fill="#', colors[3], '"/>',
'<circle cx="875" cy="805" r="25" fill="#', colors[4], '"/>',
'<circle cx="875" cy="735" r="25" fill="#', colors[5], '"/>',
'<circle cx="875" cy="665" r="25" fill="#', colors[6], '"/>'
);
}
/// @dev Returns the colors to be used to display the time.
/// The first 3 bytes are used for the first digit, the remaining 4 bytes
/// for the second digit.
function _binaryColor(uint256 n)
internal
pure
returns (bytes[7] memory)
{
unchecked {
uint256 firstDigit = n / 10;
uint256 secondDigit = n % 10;
return [
(firstDigit & 0x1 != 0) ? onColor : offColor,
(firstDigit & 0x2 != 0) ? onColor : offColor,
(firstDigit & 0x4 != 0) ? onColor : offColor,
(secondDigit & 0x1 != 0) ? onColor : offColor,
(secondDigit & 0x2 != 0) ? onColor : offColor,
(secondDigit & 0x4 != 0) ? onColor : offColor,
(secondDigit & 0x8 != 0) ? onColor : offColor
];
}
}
function _computeHue(uint160 n, uint256 id)
internal
pure
returns (bytes memory)
{
uint160 t = n ^ uint160(id);
uint160 acc = t % 360;
return bytes(Strings.toString(acc));
}
function _adjustedHourMinutes(uint256 id)
internal
view
returns (uint256 hour, uint256 minute)
{
int256 signedUserTimestamp = int256(block.timestamp) - 60 * timeOffsetMinutes[id];
uint256 userTimestamp;
// this won't realistically ever happen
if (signedUserTimestamp <= 0) {
userTimestamp = 0;
} else {
userTimestamp = uint256(signedUserTimestamp);
}
hour = BokkyPooBahsDateTimeLibrary.getHour(userTimestamp);
minute = BokkyPooBahsDateTimeLibrary.getMinute(userTimestamp);
}
} | /// @notice ETH-Time NFT contract. | NatSpecSingleLine | withdrawCharityBalance | function withdrawCharityBalance()
public
nonReentrant
{
_withdrawCharityBalance();
}
| //////////////////////////////////////////////////////////////////////////
/// @notice Withdraw charity balance to charity address.
/// @dev Anyone can call this at any time. | NatSpecSingleLine | v0.8.10+commit.fc410830 | {
"func_code_index": [
2804,
2924
]
} | 8,651 |
||
EthTime | EthTime.sol | 0xe339d6f5a42e581dce5a479fca0ed02248a6dca4 | Solidity | EthTime | contract EthTime is ERC721, CharitySplitter, Ownable, ReentrancyGuard {
//////////////////////////////////////////////////////////////////////////
// //
// Constructor //
// //
//////////////////////////////////////////////////////////////////////////
constructor(address payable charity, uint256 charityFeeBp)
ERC721("ETH Time", "ETHT")
CharitySplitter(charity, charityFeeBp)
{
}
receive() external payable {}
//////////////////////////////////////////////////////////////////////////
// //
// Transfer with History //
// //
//////////////////////////////////////////////////////////////////////////
/// @notice The state of each NFT.
mapping(uint256 => uint160) public historyAccumulator;
function transferFrom(address from, address to, uint256 id)
public
nonReentrant
override
{
_transferFrom(from, to, id);
}
function safeTransferFrom(address from, address to, uint256 id)
public
nonReentrant
override
{
_transferFrom(from, to, id);
// interactions: check destination can handle ERC721
require(
to.code.length == 0 ||
ERC721TokenReceiver(to).onERC721Received(msg.sender, from, id, "") ==
ERC721TokenReceiver.onERC721Received.selector,
"UNSAFE_RECIPIENT"
);
}
function safeTransferFrom(address from, address to, uint256 id, bytes memory /* data */)
public
nonReentrant
override
{
_transferFrom(from, to, id);
// interactions: check destination can handle ERC721
require(
to.code.length == 0 ||
ERC721TokenReceiver(to).onERC721Received(msg.sender, from, id, "") ==
ERC721TokenReceiver.onERC721Received.selector,
"UNSAFE_RECIPIENT"
);
}
//////////////////////////////////////////////////////////////////////////
// //
// Charity Splitter //
// //
//////////////////////////////////////////////////////////////////////////
/// @notice Withdraw charity balance to charity address.
/// @dev Anyone can call this at any time.
function withdrawCharityBalance()
public
nonReentrant
{
_withdrawCharityBalance();
}
/// @notice Withdraw owner balance to the specified address.
/// @param destination the address that receives the owner balance.
function withdrawOwnerBalance(address payable destination)
public
onlyOwner
nonReentrant
{
_withdrawOwnerBalance(destination);
}
/// @notice Update the address that receives the charity fee.
/// @param charity the new charity address.
function updateCharity(address payable charity)
public
onlyOwner
nonReentrant
{
_updateCharity(charity);
}
//////////////////////////////////////////////////////////////////////////
// //
// Timezone Management //
// //
//////////////////////////////////////////////////////////////////////////
mapping(uint256 => int128) public timeOffsetMinutes;
event TimeOffsetUpdated(uint256 indexed id, int128 offsetMinutes);
/// @notice Sets the time offset of the given token id.
/// @dev Use minutes because some timezones (like IST) are offset by half an hour.
/// @param id the NFT unique id.
/// @param offsetMinutes the offset in minutes.
function setTimeOffsetMinutes(uint256 id, int128 offsetMinutes)
public
{
// checks: id exists
if (ownerOf[id] == address(0)) {
revert EthTime__DoesNotExist();
}
// checks: sender is owner.
if (ownerOf[id] != msg.sender) {
revert EthTime__NotOwner();
}
// checks: validate time offset
_validateTimeOffset(offsetMinutes);
// effects: update time offset
timeOffsetMinutes[id] = offsetMinutes;
emit TimeOffsetUpdated(id, offsetMinutes);
}
function _validateTimeOffset(int128 offsetMinutes)
internal
{
int128 offsetSeconds = offsetMinutes * 60;
// checks: offset is [-12, +14] hours UTC
if (offsetSeconds > 14 hours || offsetSeconds < -12 hours) {
revert EthTime__InvalidTimeOffset();
}
}
//////////////////////////////////////////////////////////////////////////
// //
// Minting //
// //
//////////////////////////////////////////////////////////////////////////
/// @dev The number of tokens minted.
uint256 public totalSupply;
/// @dev The maximum number of mintable tokens.
uint256 public constant maximumSupply = 100;
uint256 private constant TARGET_PRICE = 1 ether;
uint256 private constant PRICE_INCREMENT = TARGET_PRICE / maximumSupply * 2;
/// @notice Mint a new NFT, transfering ownership to the given account.
/// @dev If the token id already exists, this method fails.
/// @param to the NFT ower.
/// @param offsetMinutes the time offset in minutes.
/// @param id the NFT unique id.
function mint(address to, int128 offsetMinutes, uint256 id)
public
payable
nonReentrant
virtual
{
// interactions: mint.
uint256 valueLeft = _mint(to, offsetMinutes, id, msg.value);
// interactions: send back leftover value.
if (valueLeft > 0) {
(bool success, ) = msg.sender.call{value: valueLeft}("");
require(success);
}
}
/// @notice Mint new NFTs, transfering ownership to the given account.
/// @dev If any of the token ids already exists, this method fails.
/// @param to the NFT ower.
/// @param offsetMinutes the time offset in minutes.
/// @param ids the NFT unique ids.
function batchMint(address to, int128 offsetMinutes, uint256[] calldata ids)
public
payable
nonReentrant
virtual
{
uint256 count = ids.length;
// checks: can mint count nfts
_validateBatchMintCount(count);
uint256 valueLeft = msg.value;
for (uint256 i = 0; i < count; i++) {
// interactions: mint.
valueLeft = _mint(to, offsetMinutes, ids[i], valueLeft);
}
// interactions: send back leftover value.
if (valueLeft > 0) {
(bool success, ) = msg.sender.call{value: valueLeft}("");
require(success);
}
}
/// @notice Get the price for minting the next `count` NFT.
function getBatchMintPrice(uint256 count)
public
view
returns (uint256)
{
// checks: can mint count nfts
_validateBatchMintCount(count);
uint256 supply = totalSupply;
uint256 price = 0;
for (uint256 i = 0; i < count; i++) {
price += _priceAtSupplyLevel(supply + i);
}
return price;
}
/// @notice Get the price for minting the next NFT.
function getMintPrice()
public
view
returns (uint256)
{
return _priceAtSupplyLevel(totalSupply);
}
function _mint(address to, int128 offsetMinutes, uint256 id, uint256 value)
internal
returns (uint256 valueLeft)
{
uint256 price = _priceAtSupplyLevel(totalSupply);
// checks: value is enough to mint the nft.
if (value < price) {
revert EthTime__InvalidMintValue();
}
// checks: minting causes going over maximum supply.
if (totalSupply == maximumSupply) {
revert EthTime__CollectionMintClosed();
}
// checks: validate offset
_validateTimeOffset(offsetMinutes);
// effects: seed history with unique starting value.
historyAccumulator[id] = uint160(id >> 4);
// effects: increment total supply.
totalSupply += 1;
// effects: update charity split.
_updateBalance(value);
// effects: set time offset
timeOffsetMinutes[id] = offsetMinutes;
// interactions: safe mint
_safeMint(to, id);
// return value left to be sent back to user.
valueLeft = value - price;
}
function _priceAtSupplyLevel(uint256 supply)
internal
pure
returns (uint256)
{
uint256 price = supply * PRICE_INCREMENT;
if (supply > 50) {
price = TARGET_PRICE;
}
return price;
}
function _validateBatchMintCount(uint256 count)
internal
view
{
// checks: no more than 10.
if (count > 10) {
revert EthTime__InvalidMintAmount();
}
// checks: minting does not push over the limit.
// notice that it would fail anyway.
if (totalSupply + count > maximumSupply) {
revert EthTime__InvalidMintAmount();
}
}
//////////////////////////////////////////////////////////////////////////
// //
// Token URI //
// //
//////////////////////////////////////////////////////////////////////////
/// @notice Returns the URI with the NFT metadata.
/// @dev Returns the base64 encoded metadata inline.
/// @param id the NFT unique id
function tokenURI(uint256 id)
public
view
override
returns (string memory)
{
if (ownerOf[id] == address(0)) {
revert EthTime__DoesNotExist();
}
string memory tokenId = Strings.toString(id);
(uint256 hour, uint256 minute) = _adjustedHourMinutes(id);
bytes memory topHue = _computeHue(historyAccumulator[id], id);
bytes memory bottomHue = _computeHue(uint160(ownerOf[id]), id);
int128 offset = timeOffsetMinutes[id];
bytes memory offsetSign = offset >= 0 ? bytes('+') : bytes('-');
uint256 offsetUnsigned = offset >= 0 ? uint256(int256(offset)) : uint256(int256(-offset));
return
string(
bytes.concat(
'data:application/json;base64,',
bytes(
Base64.encode(
bytes.concat(
'{"name": "ETH Time #',
bytes(tokenId),
'", "description": "ETH Time", "image": "data:image/svg+xml;base64,',
bytes(_tokenImage(topHue, bottomHue, hour, minute)),
'", "attributes": [{"trait_type": "top_color", "value": "hsl(', topHue, ',100%,89%)"},',
'{"trait_type": "bottom_color", "value": "hsl(', bottomHue, ',77%,36%)"},',
'{"trait_type": "time_offset", "value": "', offsetSign, bytes(Strings.toString(offsetUnsigned)), '"},',
'{"trait_type": "time", "value": "', bytes(Strings.toString(hour)), ':', bytes(Strings.toString(minute)), '"}]}'
)
)
)
)
);
}
/// @dev Generate a preview of the token that will be minted.
/// @param to the minter.
/// @param id the NFT unique id.
function tokenImagePreview(address to, uint256 id)
public
view
returns (string memory)
{
(uint256 hour, uint256 minute) = _adjustedHourMinutes(id);
bytes memory topHue = _computeHue(uint160(id >> 4), id);
bytes memory bottomHue = _computeHue(uint160(to), id);
return _tokenImage(topHue, bottomHue, hour, minute);
}
//////////////////////////////////////////////////////////////////////////
// //
// Private Functions //
// //
//////////////////////////////////////////////////////////////////////////
/// @dev Update the NFT history based on the transfer to the given account.
/// @param to the address that will receive the nft.
/// @param id the NFT unique id.
function _updateHistory(address to, uint256 id)
internal
{
// effects: xor existing value with address bytes content.
historyAccumulator[id] ^= uint160(to) << 2;
}
function _transferFrom(address from, address to, uint256 id)
internal
{
// checks: sender and destination
require(from == ownerOf[id], "WRONG_FROM");
require(to != address(0), "INVALID_RECIPIENT");
// checks: can transfer
require(
msg.sender == from || msg.sender == getApproved[id] || isApprovedForAll[from][msg.sender],
"NOT_AUTHORIZED"
);
// effects: update balance
// Underflow of the sender's balance is impossible because we check for
// ownership above and the recipient's balance can't realistically overflow.
unchecked {
balanceOf[from]--;
balanceOf[to]++;
}
// effects: update owership
ownerOf[id] = to;
// effects: reclaim storage
delete getApproved[id];
// effects: update history
_updateHistory(to, id);
emit Transfer(from, to, id);
}
bytes constant onColor = "FFF";
bytes constant offColor = "333";
/// @dev Generate the SVG image for the given NFT.
function _tokenImage(bytes memory topHue, bytes memory bottomHue, uint256 hour, uint256 minute)
internal
pure
returns (string memory)
{
return
Base64.encode(
bytes.concat(
'<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 1000 1000">',
'<linearGradient id="bg" gradientTransform="rotate(90)">',
'<stop offset="0%" stop-color="hsl(', topHue, ',100%,89%)"/>',
'<stop offset="100%" stop-color="hsl(', bottomHue, ',77%,36%)"/>',
'</linearGradient>',
'<rect x="0" y="0" width="1000" height="1000" fill="url(#bg)"/>',
_binaryHour(hour),
_binaryMinute(minute),
'</svg>'
)
);
}
function _binaryHour(uint256 hour)
internal
pure
returns (bytes memory)
{
if (hour > 24) {
revert EthTime__NumberOutOfRange();
}
bytes[7] memory colors = _binaryColor(hour);
return
bytes.concat(
'<circle cx="665" cy="875" r="25" fill="#', colors[0], '"/>',
'<circle cx="665" cy="805" r="25" fill="#', colors[1], '"/>',
// skip colors[2]
'<circle cx="735" cy="875" r="25" fill="#', colors[3], '"/>',
'<circle cx="735" cy="805" r="25" fill="#', colors[4], '"/>',
'<circle cx="735" cy="735" r="25" fill="#', colors[5], '"/>',
'<circle cx="735" cy="665" r="25" fill="#', colors[6], '"/>'
);
}
function _binaryMinute(uint256 minute)
internal
pure
returns (bytes memory)
{
if (minute > 59) {
revert EthTime__NumberOutOfRange();
}
bytes[7] memory colors = _binaryColor(minute);
return
bytes.concat(
'<circle cx="805" cy="875" r="25" fill="#', colors[0], '"/>',
'<circle cx="805" cy="805" r="25" fill="#', colors[1], '"/>',
'<circle cx="805" cy="735" r="25" fill="#', colors[2], '"/>',
'<circle cx="875" cy="875" r="25" fill="#', colors[3], '"/>',
'<circle cx="875" cy="805" r="25" fill="#', colors[4], '"/>',
'<circle cx="875" cy="735" r="25" fill="#', colors[5], '"/>',
'<circle cx="875" cy="665" r="25" fill="#', colors[6], '"/>'
);
}
/// @dev Returns the colors to be used to display the time.
/// The first 3 bytes are used for the first digit, the remaining 4 bytes
/// for the second digit.
function _binaryColor(uint256 n)
internal
pure
returns (bytes[7] memory)
{
unchecked {
uint256 firstDigit = n / 10;
uint256 secondDigit = n % 10;
return [
(firstDigit & 0x1 != 0) ? onColor : offColor,
(firstDigit & 0x2 != 0) ? onColor : offColor,
(firstDigit & 0x4 != 0) ? onColor : offColor,
(secondDigit & 0x1 != 0) ? onColor : offColor,
(secondDigit & 0x2 != 0) ? onColor : offColor,
(secondDigit & 0x4 != 0) ? onColor : offColor,
(secondDigit & 0x8 != 0) ? onColor : offColor
];
}
}
function _computeHue(uint160 n, uint256 id)
internal
pure
returns (bytes memory)
{
uint160 t = n ^ uint160(id);
uint160 acc = t % 360;
return bytes(Strings.toString(acc));
}
function _adjustedHourMinutes(uint256 id)
internal
view
returns (uint256 hour, uint256 minute)
{
int256 signedUserTimestamp = int256(block.timestamp) - 60 * timeOffsetMinutes[id];
uint256 userTimestamp;
// this won't realistically ever happen
if (signedUserTimestamp <= 0) {
userTimestamp = 0;
} else {
userTimestamp = uint256(signedUserTimestamp);
}
hour = BokkyPooBahsDateTimeLibrary.getHour(userTimestamp);
minute = BokkyPooBahsDateTimeLibrary.getMinute(userTimestamp);
}
} | /// @notice ETH-Time NFT contract. | NatSpecSingleLine | withdrawOwnerBalance | function withdrawOwnerBalance(address payable destination)
public
onlyOwner
nonReentrant
{
_withdrawOwnerBalance(destination);
}
| /// @notice Withdraw owner balance to the specified address.
/// @param destination the address that receives the owner balance. | NatSpecSingleLine | v0.8.10+commit.fc410830 | {
"func_code_index": [
3063,
3235
]
} | 8,652 |
||
EthTime | EthTime.sol | 0xe339d6f5a42e581dce5a479fca0ed02248a6dca4 | Solidity | EthTime | contract EthTime is ERC721, CharitySplitter, Ownable, ReentrancyGuard {
//////////////////////////////////////////////////////////////////////////
// //
// Constructor //
// //
//////////////////////////////////////////////////////////////////////////
constructor(address payable charity, uint256 charityFeeBp)
ERC721("ETH Time", "ETHT")
CharitySplitter(charity, charityFeeBp)
{
}
receive() external payable {}
//////////////////////////////////////////////////////////////////////////
// //
// Transfer with History //
// //
//////////////////////////////////////////////////////////////////////////
/// @notice The state of each NFT.
mapping(uint256 => uint160) public historyAccumulator;
function transferFrom(address from, address to, uint256 id)
public
nonReentrant
override
{
_transferFrom(from, to, id);
}
function safeTransferFrom(address from, address to, uint256 id)
public
nonReentrant
override
{
_transferFrom(from, to, id);
// interactions: check destination can handle ERC721
require(
to.code.length == 0 ||
ERC721TokenReceiver(to).onERC721Received(msg.sender, from, id, "") ==
ERC721TokenReceiver.onERC721Received.selector,
"UNSAFE_RECIPIENT"
);
}
function safeTransferFrom(address from, address to, uint256 id, bytes memory /* data */)
public
nonReentrant
override
{
_transferFrom(from, to, id);
// interactions: check destination can handle ERC721
require(
to.code.length == 0 ||
ERC721TokenReceiver(to).onERC721Received(msg.sender, from, id, "") ==
ERC721TokenReceiver.onERC721Received.selector,
"UNSAFE_RECIPIENT"
);
}
//////////////////////////////////////////////////////////////////////////
// //
// Charity Splitter //
// //
//////////////////////////////////////////////////////////////////////////
/// @notice Withdraw charity balance to charity address.
/// @dev Anyone can call this at any time.
function withdrawCharityBalance()
public
nonReentrant
{
_withdrawCharityBalance();
}
/// @notice Withdraw owner balance to the specified address.
/// @param destination the address that receives the owner balance.
function withdrawOwnerBalance(address payable destination)
public
onlyOwner
nonReentrant
{
_withdrawOwnerBalance(destination);
}
/// @notice Update the address that receives the charity fee.
/// @param charity the new charity address.
function updateCharity(address payable charity)
public
onlyOwner
nonReentrant
{
_updateCharity(charity);
}
//////////////////////////////////////////////////////////////////////////
// //
// Timezone Management //
// //
//////////////////////////////////////////////////////////////////////////
mapping(uint256 => int128) public timeOffsetMinutes;
event TimeOffsetUpdated(uint256 indexed id, int128 offsetMinutes);
/// @notice Sets the time offset of the given token id.
/// @dev Use minutes because some timezones (like IST) are offset by half an hour.
/// @param id the NFT unique id.
/// @param offsetMinutes the offset in minutes.
function setTimeOffsetMinutes(uint256 id, int128 offsetMinutes)
public
{
// checks: id exists
if (ownerOf[id] == address(0)) {
revert EthTime__DoesNotExist();
}
// checks: sender is owner.
if (ownerOf[id] != msg.sender) {
revert EthTime__NotOwner();
}
// checks: validate time offset
_validateTimeOffset(offsetMinutes);
// effects: update time offset
timeOffsetMinutes[id] = offsetMinutes;
emit TimeOffsetUpdated(id, offsetMinutes);
}
function _validateTimeOffset(int128 offsetMinutes)
internal
{
int128 offsetSeconds = offsetMinutes * 60;
// checks: offset is [-12, +14] hours UTC
if (offsetSeconds > 14 hours || offsetSeconds < -12 hours) {
revert EthTime__InvalidTimeOffset();
}
}
//////////////////////////////////////////////////////////////////////////
// //
// Minting //
// //
//////////////////////////////////////////////////////////////////////////
/// @dev The number of tokens minted.
uint256 public totalSupply;
/// @dev The maximum number of mintable tokens.
uint256 public constant maximumSupply = 100;
uint256 private constant TARGET_PRICE = 1 ether;
uint256 private constant PRICE_INCREMENT = TARGET_PRICE / maximumSupply * 2;
/// @notice Mint a new NFT, transfering ownership to the given account.
/// @dev If the token id already exists, this method fails.
/// @param to the NFT ower.
/// @param offsetMinutes the time offset in minutes.
/// @param id the NFT unique id.
function mint(address to, int128 offsetMinutes, uint256 id)
public
payable
nonReentrant
virtual
{
// interactions: mint.
uint256 valueLeft = _mint(to, offsetMinutes, id, msg.value);
// interactions: send back leftover value.
if (valueLeft > 0) {
(bool success, ) = msg.sender.call{value: valueLeft}("");
require(success);
}
}
/// @notice Mint new NFTs, transfering ownership to the given account.
/// @dev If any of the token ids already exists, this method fails.
/// @param to the NFT ower.
/// @param offsetMinutes the time offset in minutes.
/// @param ids the NFT unique ids.
function batchMint(address to, int128 offsetMinutes, uint256[] calldata ids)
public
payable
nonReentrant
virtual
{
uint256 count = ids.length;
// checks: can mint count nfts
_validateBatchMintCount(count);
uint256 valueLeft = msg.value;
for (uint256 i = 0; i < count; i++) {
// interactions: mint.
valueLeft = _mint(to, offsetMinutes, ids[i], valueLeft);
}
// interactions: send back leftover value.
if (valueLeft > 0) {
(bool success, ) = msg.sender.call{value: valueLeft}("");
require(success);
}
}
/// @notice Get the price for minting the next `count` NFT.
function getBatchMintPrice(uint256 count)
public
view
returns (uint256)
{
// checks: can mint count nfts
_validateBatchMintCount(count);
uint256 supply = totalSupply;
uint256 price = 0;
for (uint256 i = 0; i < count; i++) {
price += _priceAtSupplyLevel(supply + i);
}
return price;
}
/// @notice Get the price for minting the next NFT.
function getMintPrice()
public
view
returns (uint256)
{
return _priceAtSupplyLevel(totalSupply);
}
function _mint(address to, int128 offsetMinutes, uint256 id, uint256 value)
internal
returns (uint256 valueLeft)
{
uint256 price = _priceAtSupplyLevel(totalSupply);
// checks: value is enough to mint the nft.
if (value < price) {
revert EthTime__InvalidMintValue();
}
// checks: minting causes going over maximum supply.
if (totalSupply == maximumSupply) {
revert EthTime__CollectionMintClosed();
}
// checks: validate offset
_validateTimeOffset(offsetMinutes);
// effects: seed history with unique starting value.
historyAccumulator[id] = uint160(id >> 4);
// effects: increment total supply.
totalSupply += 1;
// effects: update charity split.
_updateBalance(value);
// effects: set time offset
timeOffsetMinutes[id] = offsetMinutes;
// interactions: safe mint
_safeMint(to, id);
// return value left to be sent back to user.
valueLeft = value - price;
}
function _priceAtSupplyLevel(uint256 supply)
internal
pure
returns (uint256)
{
uint256 price = supply * PRICE_INCREMENT;
if (supply > 50) {
price = TARGET_PRICE;
}
return price;
}
function _validateBatchMintCount(uint256 count)
internal
view
{
// checks: no more than 10.
if (count > 10) {
revert EthTime__InvalidMintAmount();
}
// checks: minting does not push over the limit.
// notice that it would fail anyway.
if (totalSupply + count > maximumSupply) {
revert EthTime__InvalidMintAmount();
}
}
//////////////////////////////////////////////////////////////////////////
// //
// Token URI //
// //
//////////////////////////////////////////////////////////////////////////
/// @notice Returns the URI with the NFT metadata.
/// @dev Returns the base64 encoded metadata inline.
/// @param id the NFT unique id
function tokenURI(uint256 id)
public
view
override
returns (string memory)
{
if (ownerOf[id] == address(0)) {
revert EthTime__DoesNotExist();
}
string memory tokenId = Strings.toString(id);
(uint256 hour, uint256 minute) = _adjustedHourMinutes(id);
bytes memory topHue = _computeHue(historyAccumulator[id], id);
bytes memory bottomHue = _computeHue(uint160(ownerOf[id]), id);
int128 offset = timeOffsetMinutes[id];
bytes memory offsetSign = offset >= 0 ? bytes('+') : bytes('-');
uint256 offsetUnsigned = offset >= 0 ? uint256(int256(offset)) : uint256(int256(-offset));
return
string(
bytes.concat(
'data:application/json;base64,',
bytes(
Base64.encode(
bytes.concat(
'{"name": "ETH Time #',
bytes(tokenId),
'", "description": "ETH Time", "image": "data:image/svg+xml;base64,',
bytes(_tokenImage(topHue, bottomHue, hour, minute)),
'", "attributes": [{"trait_type": "top_color", "value": "hsl(', topHue, ',100%,89%)"},',
'{"trait_type": "bottom_color", "value": "hsl(', bottomHue, ',77%,36%)"},',
'{"trait_type": "time_offset", "value": "', offsetSign, bytes(Strings.toString(offsetUnsigned)), '"},',
'{"trait_type": "time", "value": "', bytes(Strings.toString(hour)), ':', bytes(Strings.toString(minute)), '"}]}'
)
)
)
)
);
}
/// @dev Generate a preview of the token that will be minted.
/// @param to the minter.
/// @param id the NFT unique id.
function tokenImagePreview(address to, uint256 id)
public
view
returns (string memory)
{
(uint256 hour, uint256 minute) = _adjustedHourMinutes(id);
bytes memory topHue = _computeHue(uint160(id >> 4), id);
bytes memory bottomHue = _computeHue(uint160(to), id);
return _tokenImage(topHue, bottomHue, hour, minute);
}
//////////////////////////////////////////////////////////////////////////
// //
// Private Functions //
// //
//////////////////////////////////////////////////////////////////////////
/// @dev Update the NFT history based on the transfer to the given account.
/// @param to the address that will receive the nft.
/// @param id the NFT unique id.
function _updateHistory(address to, uint256 id)
internal
{
// effects: xor existing value with address bytes content.
historyAccumulator[id] ^= uint160(to) << 2;
}
function _transferFrom(address from, address to, uint256 id)
internal
{
// checks: sender and destination
require(from == ownerOf[id], "WRONG_FROM");
require(to != address(0), "INVALID_RECIPIENT");
// checks: can transfer
require(
msg.sender == from || msg.sender == getApproved[id] || isApprovedForAll[from][msg.sender],
"NOT_AUTHORIZED"
);
// effects: update balance
// Underflow of the sender's balance is impossible because we check for
// ownership above and the recipient's balance can't realistically overflow.
unchecked {
balanceOf[from]--;
balanceOf[to]++;
}
// effects: update owership
ownerOf[id] = to;
// effects: reclaim storage
delete getApproved[id];
// effects: update history
_updateHistory(to, id);
emit Transfer(from, to, id);
}
bytes constant onColor = "FFF";
bytes constant offColor = "333";
/// @dev Generate the SVG image for the given NFT.
function _tokenImage(bytes memory topHue, bytes memory bottomHue, uint256 hour, uint256 minute)
internal
pure
returns (string memory)
{
return
Base64.encode(
bytes.concat(
'<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 1000 1000">',
'<linearGradient id="bg" gradientTransform="rotate(90)">',
'<stop offset="0%" stop-color="hsl(', topHue, ',100%,89%)"/>',
'<stop offset="100%" stop-color="hsl(', bottomHue, ',77%,36%)"/>',
'</linearGradient>',
'<rect x="0" y="0" width="1000" height="1000" fill="url(#bg)"/>',
_binaryHour(hour),
_binaryMinute(minute),
'</svg>'
)
);
}
function _binaryHour(uint256 hour)
internal
pure
returns (bytes memory)
{
if (hour > 24) {
revert EthTime__NumberOutOfRange();
}
bytes[7] memory colors = _binaryColor(hour);
return
bytes.concat(
'<circle cx="665" cy="875" r="25" fill="#', colors[0], '"/>',
'<circle cx="665" cy="805" r="25" fill="#', colors[1], '"/>',
// skip colors[2]
'<circle cx="735" cy="875" r="25" fill="#', colors[3], '"/>',
'<circle cx="735" cy="805" r="25" fill="#', colors[4], '"/>',
'<circle cx="735" cy="735" r="25" fill="#', colors[5], '"/>',
'<circle cx="735" cy="665" r="25" fill="#', colors[6], '"/>'
);
}
function _binaryMinute(uint256 minute)
internal
pure
returns (bytes memory)
{
if (minute > 59) {
revert EthTime__NumberOutOfRange();
}
bytes[7] memory colors = _binaryColor(minute);
return
bytes.concat(
'<circle cx="805" cy="875" r="25" fill="#', colors[0], '"/>',
'<circle cx="805" cy="805" r="25" fill="#', colors[1], '"/>',
'<circle cx="805" cy="735" r="25" fill="#', colors[2], '"/>',
'<circle cx="875" cy="875" r="25" fill="#', colors[3], '"/>',
'<circle cx="875" cy="805" r="25" fill="#', colors[4], '"/>',
'<circle cx="875" cy="735" r="25" fill="#', colors[5], '"/>',
'<circle cx="875" cy="665" r="25" fill="#', colors[6], '"/>'
);
}
/// @dev Returns the colors to be used to display the time.
/// The first 3 bytes are used for the first digit, the remaining 4 bytes
/// for the second digit.
function _binaryColor(uint256 n)
internal
pure
returns (bytes[7] memory)
{
unchecked {
uint256 firstDigit = n / 10;
uint256 secondDigit = n % 10;
return [
(firstDigit & 0x1 != 0) ? onColor : offColor,
(firstDigit & 0x2 != 0) ? onColor : offColor,
(firstDigit & 0x4 != 0) ? onColor : offColor,
(secondDigit & 0x1 != 0) ? onColor : offColor,
(secondDigit & 0x2 != 0) ? onColor : offColor,
(secondDigit & 0x4 != 0) ? onColor : offColor,
(secondDigit & 0x8 != 0) ? onColor : offColor
];
}
}
function _computeHue(uint160 n, uint256 id)
internal
pure
returns (bytes memory)
{
uint160 t = n ^ uint160(id);
uint160 acc = t % 360;
return bytes(Strings.toString(acc));
}
function _adjustedHourMinutes(uint256 id)
internal
view
returns (uint256 hour, uint256 minute)
{
int256 signedUserTimestamp = int256(block.timestamp) - 60 * timeOffsetMinutes[id];
uint256 userTimestamp;
// this won't realistically ever happen
if (signedUserTimestamp <= 0) {
userTimestamp = 0;
} else {
userTimestamp = uint256(signedUserTimestamp);
}
hour = BokkyPooBahsDateTimeLibrary.getHour(userTimestamp);
minute = BokkyPooBahsDateTimeLibrary.getMinute(userTimestamp);
}
} | /// @notice ETH-Time NFT contract. | NatSpecSingleLine | updateCharity | function updateCharity(address payable charity)
public
onlyOwner
nonReentrant
{
_updateCharity(charity);
}
| /// @notice Update the address that receives the charity fee.
/// @param charity the new charity address. | NatSpecSingleLine | v0.8.10+commit.fc410830 | {
"func_code_index": [
3351,
3501
]
} | 8,653 |
||
EthTime | EthTime.sol | 0xe339d6f5a42e581dce5a479fca0ed02248a6dca4 | Solidity | EthTime | contract EthTime is ERC721, CharitySplitter, Ownable, ReentrancyGuard {
//////////////////////////////////////////////////////////////////////////
// //
// Constructor //
// //
//////////////////////////////////////////////////////////////////////////
constructor(address payable charity, uint256 charityFeeBp)
ERC721("ETH Time", "ETHT")
CharitySplitter(charity, charityFeeBp)
{
}
receive() external payable {}
//////////////////////////////////////////////////////////////////////////
// //
// Transfer with History //
// //
//////////////////////////////////////////////////////////////////////////
/// @notice The state of each NFT.
mapping(uint256 => uint160) public historyAccumulator;
function transferFrom(address from, address to, uint256 id)
public
nonReentrant
override
{
_transferFrom(from, to, id);
}
function safeTransferFrom(address from, address to, uint256 id)
public
nonReentrant
override
{
_transferFrom(from, to, id);
// interactions: check destination can handle ERC721
require(
to.code.length == 0 ||
ERC721TokenReceiver(to).onERC721Received(msg.sender, from, id, "") ==
ERC721TokenReceiver.onERC721Received.selector,
"UNSAFE_RECIPIENT"
);
}
function safeTransferFrom(address from, address to, uint256 id, bytes memory /* data */)
public
nonReentrant
override
{
_transferFrom(from, to, id);
// interactions: check destination can handle ERC721
require(
to.code.length == 0 ||
ERC721TokenReceiver(to).onERC721Received(msg.sender, from, id, "") ==
ERC721TokenReceiver.onERC721Received.selector,
"UNSAFE_RECIPIENT"
);
}
//////////////////////////////////////////////////////////////////////////
// //
// Charity Splitter //
// //
//////////////////////////////////////////////////////////////////////////
/// @notice Withdraw charity balance to charity address.
/// @dev Anyone can call this at any time.
function withdrawCharityBalance()
public
nonReentrant
{
_withdrawCharityBalance();
}
/// @notice Withdraw owner balance to the specified address.
/// @param destination the address that receives the owner balance.
function withdrawOwnerBalance(address payable destination)
public
onlyOwner
nonReentrant
{
_withdrawOwnerBalance(destination);
}
/// @notice Update the address that receives the charity fee.
/// @param charity the new charity address.
function updateCharity(address payable charity)
public
onlyOwner
nonReentrant
{
_updateCharity(charity);
}
//////////////////////////////////////////////////////////////////////////
// //
// Timezone Management //
// //
//////////////////////////////////////////////////////////////////////////
mapping(uint256 => int128) public timeOffsetMinutes;
event TimeOffsetUpdated(uint256 indexed id, int128 offsetMinutes);
/// @notice Sets the time offset of the given token id.
/// @dev Use minutes because some timezones (like IST) are offset by half an hour.
/// @param id the NFT unique id.
/// @param offsetMinutes the offset in minutes.
function setTimeOffsetMinutes(uint256 id, int128 offsetMinutes)
public
{
// checks: id exists
if (ownerOf[id] == address(0)) {
revert EthTime__DoesNotExist();
}
// checks: sender is owner.
if (ownerOf[id] != msg.sender) {
revert EthTime__NotOwner();
}
// checks: validate time offset
_validateTimeOffset(offsetMinutes);
// effects: update time offset
timeOffsetMinutes[id] = offsetMinutes;
emit TimeOffsetUpdated(id, offsetMinutes);
}
function _validateTimeOffset(int128 offsetMinutes)
internal
{
int128 offsetSeconds = offsetMinutes * 60;
// checks: offset is [-12, +14] hours UTC
if (offsetSeconds > 14 hours || offsetSeconds < -12 hours) {
revert EthTime__InvalidTimeOffset();
}
}
//////////////////////////////////////////////////////////////////////////
// //
// Minting //
// //
//////////////////////////////////////////////////////////////////////////
/// @dev The number of tokens minted.
uint256 public totalSupply;
/// @dev The maximum number of mintable tokens.
uint256 public constant maximumSupply = 100;
uint256 private constant TARGET_PRICE = 1 ether;
uint256 private constant PRICE_INCREMENT = TARGET_PRICE / maximumSupply * 2;
/// @notice Mint a new NFT, transfering ownership to the given account.
/// @dev If the token id already exists, this method fails.
/// @param to the NFT ower.
/// @param offsetMinutes the time offset in minutes.
/// @param id the NFT unique id.
function mint(address to, int128 offsetMinutes, uint256 id)
public
payable
nonReentrant
virtual
{
// interactions: mint.
uint256 valueLeft = _mint(to, offsetMinutes, id, msg.value);
// interactions: send back leftover value.
if (valueLeft > 0) {
(bool success, ) = msg.sender.call{value: valueLeft}("");
require(success);
}
}
/// @notice Mint new NFTs, transfering ownership to the given account.
/// @dev If any of the token ids already exists, this method fails.
/// @param to the NFT ower.
/// @param offsetMinutes the time offset in minutes.
/// @param ids the NFT unique ids.
function batchMint(address to, int128 offsetMinutes, uint256[] calldata ids)
public
payable
nonReentrant
virtual
{
uint256 count = ids.length;
// checks: can mint count nfts
_validateBatchMintCount(count);
uint256 valueLeft = msg.value;
for (uint256 i = 0; i < count; i++) {
// interactions: mint.
valueLeft = _mint(to, offsetMinutes, ids[i], valueLeft);
}
// interactions: send back leftover value.
if (valueLeft > 0) {
(bool success, ) = msg.sender.call{value: valueLeft}("");
require(success);
}
}
/// @notice Get the price for minting the next `count` NFT.
function getBatchMintPrice(uint256 count)
public
view
returns (uint256)
{
// checks: can mint count nfts
_validateBatchMintCount(count);
uint256 supply = totalSupply;
uint256 price = 0;
for (uint256 i = 0; i < count; i++) {
price += _priceAtSupplyLevel(supply + i);
}
return price;
}
/// @notice Get the price for minting the next NFT.
function getMintPrice()
public
view
returns (uint256)
{
return _priceAtSupplyLevel(totalSupply);
}
function _mint(address to, int128 offsetMinutes, uint256 id, uint256 value)
internal
returns (uint256 valueLeft)
{
uint256 price = _priceAtSupplyLevel(totalSupply);
// checks: value is enough to mint the nft.
if (value < price) {
revert EthTime__InvalidMintValue();
}
// checks: minting causes going over maximum supply.
if (totalSupply == maximumSupply) {
revert EthTime__CollectionMintClosed();
}
// checks: validate offset
_validateTimeOffset(offsetMinutes);
// effects: seed history with unique starting value.
historyAccumulator[id] = uint160(id >> 4);
// effects: increment total supply.
totalSupply += 1;
// effects: update charity split.
_updateBalance(value);
// effects: set time offset
timeOffsetMinutes[id] = offsetMinutes;
// interactions: safe mint
_safeMint(to, id);
// return value left to be sent back to user.
valueLeft = value - price;
}
function _priceAtSupplyLevel(uint256 supply)
internal
pure
returns (uint256)
{
uint256 price = supply * PRICE_INCREMENT;
if (supply > 50) {
price = TARGET_PRICE;
}
return price;
}
function _validateBatchMintCount(uint256 count)
internal
view
{
// checks: no more than 10.
if (count > 10) {
revert EthTime__InvalidMintAmount();
}
// checks: minting does not push over the limit.
// notice that it would fail anyway.
if (totalSupply + count > maximumSupply) {
revert EthTime__InvalidMintAmount();
}
}
//////////////////////////////////////////////////////////////////////////
// //
// Token URI //
// //
//////////////////////////////////////////////////////////////////////////
/// @notice Returns the URI with the NFT metadata.
/// @dev Returns the base64 encoded metadata inline.
/// @param id the NFT unique id
function tokenURI(uint256 id)
public
view
override
returns (string memory)
{
if (ownerOf[id] == address(0)) {
revert EthTime__DoesNotExist();
}
string memory tokenId = Strings.toString(id);
(uint256 hour, uint256 minute) = _adjustedHourMinutes(id);
bytes memory topHue = _computeHue(historyAccumulator[id], id);
bytes memory bottomHue = _computeHue(uint160(ownerOf[id]), id);
int128 offset = timeOffsetMinutes[id];
bytes memory offsetSign = offset >= 0 ? bytes('+') : bytes('-');
uint256 offsetUnsigned = offset >= 0 ? uint256(int256(offset)) : uint256(int256(-offset));
return
string(
bytes.concat(
'data:application/json;base64,',
bytes(
Base64.encode(
bytes.concat(
'{"name": "ETH Time #',
bytes(tokenId),
'", "description": "ETH Time", "image": "data:image/svg+xml;base64,',
bytes(_tokenImage(topHue, bottomHue, hour, minute)),
'", "attributes": [{"trait_type": "top_color", "value": "hsl(', topHue, ',100%,89%)"},',
'{"trait_type": "bottom_color", "value": "hsl(', bottomHue, ',77%,36%)"},',
'{"trait_type": "time_offset", "value": "', offsetSign, bytes(Strings.toString(offsetUnsigned)), '"},',
'{"trait_type": "time", "value": "', bytes(Strings.toString(hour)), ':', bytes(Strings.toString(minute)), '"}]}'
)
)
)
)
);
}
/// @dev Generate a preview of the token that will be minted.
/// @param to the minter.
/// @param id the NFT unique id.
function tokenImagePreview(address to, uint256 id)
public
view
returns (string memory)
{
(uint256 hour, uint256 minute) = _adjustedHourMinutes(id);
bytes memory topHue = _computeHue(uint160(id >> 4), id);
bytes memory bottomHue = _computeHue(uint160(to), id);
return _tokenImage(topHue, bottomHue, hour, minute);
}
//////////////////////////////////////////////////////////////////////////
// //
// Private Functions //
// //
//////////////////////////////////////////////////////////////////////////
/// @dev Update the NFT history based on the transfer to the given account.
/// @param to the address that will receive the nft.
/// @param id the NFT unique id.
function _updateHistory(address to, uint256 id)
internal
{
// effects: xor existing value with address bytes content.
historyAccumulator[id] ^= uint160(to) << 2;
}
function _transferFrom(address from, address to, uint256 id)
internal
{
// checks: sender and destination
require(from == ownerOf[id], "WRONG_FROM");
require(to != address(0), "INVALID_RECIPIENT");
// checks: can transfer
require(
msg.sender == from || msg.sender == getApproved[id] || isApprovedForAll[from][msg.sender],
"NOT_AUTHORIZED"
);
// effects: update balance
// Underflow of the sender's balance is impossible because we check for
// ownership above and the recipient's balance can't realistically overflow.
unchecked {
balanceOf[from]--;
balanceOf[to]++;
}
// effects: update owership
ownerOf[id] = to;
// effects: reclaim storage
delete getApproved[id];
// effects: update history
_updateHistory(to, id);
emit Transfer(from, to, id);
}
bytes constant onColor = "FFF";
bytes constant offColor = "333";
/// @dev Generate the SVG image for the given NFT.
function _tokenImage(bytes memory topHue, bytes memory bottomHue, uint256 hour, uint256 minute)
internal
pure
returns (string memory)
{
return
Base64.encode(
bytes.concat(
'<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 1000 1000">',
'<linearGradient id="bg" gradientTransform="rotate(90)">',
'<stop offset="0%" stop-color="hsl(', topHue, ',100%,89%)"/>',
'<stop offset="100%" stop-color="hsl(', bottomHue, ',77%,36%)"/>',
'</linearGradient>',
'<rect x="0" y="0" width="1000" height="1000" fill="url(#bg)"/>',
_binaryHour(hour),
_binaryMinute(minute),
'</svg>'
)
);
}
function _binaryHour(uint256 hour)
internal
pure
returns (bytes memory)
{
if (hour > 24) {
revert EthTime__NumberOutOfRange();
}
bytes[7] memory colors = _binaryColor(hour);
return
bytes.concat(
'<circle cx="665" cy="875" r="25" fill="#', colors[0], '"/>',
'<circle cx="665" cy="805" r="25" fill="#', colors[1], '"/>',
// skip colors[2]
'<circle cx="735" cy="875" r="25" fill="#', colors[3], '"/>',
'<circle cx="735" cy="805" r="25" fill="#', colors[4], '"/>',
'<circle cx="735" cy="735" r="25" fill="#', colors[5], '"/>',
'<circle cx="735" cy="665" r="25" fill="#', colors[6], '"/>'
);
}
function _binaryMinute(uint256 minute)
internal
pure
returns (bytes memory)
{
if (minute > 59) {
revert EthTime__NumberOutOfRange();
}
bytes[7] memory colors = _binaryColor(minute);
return
bytes.concat(
'<circle cx="805" cy="875" r="25" fill="#', colors[0], '"/>',
'<circle cx="805" cy="805" r="25" fill="#', colors[1], '"/>',
'<circle cx="805" cy="735" r="25" fill="#', colors[2], '"/>',
'<circle cx="875" cy="875" r="25" fill="#', colors[3], '"/>',
'<circle cx="875" cy="805" r="25" fill="#', colors[4], '"/>',
'<circle cx="875" cy="735" r="25" fill="#', colors[5], '"/>',
'<circle cx="875" cy="665" r="25" fill="#', colors[6], '"/>'
);
}
/// @dev Returns the colors to be used to display the time.
/// The first 3 bytes are used for the first digit, the remaining 4 bytes
/// for the second digit.
function _binaryColor(uint256 n)
internal
pure
returns (bytes[7] memory)
{
unchecked {
uint256 firstDigit = n / 10;
uint256 secondDigit = n % 10;
return [
(firstDigit & 0x1 != 0) ? onColor : offColor,
(firstDigit & 0x2 != 0) ? onColor : offColor,
(firstDigit & 0x4 != 0) ? onColor : offColor,
(secondDigit & 0x1 != 0) ? onColor : offColor,
(secondDigit & 0x2 != 0) ? onColor : offColor,
(secondDigit & 0x4 != 0) ? onColor : offColor,
(secondDigit & 0x8 != 0) ? onColor : offColor
];
}
}
function _computeHue(uint160 n, uint256 id)
internal
pure
returns (bytes memory)
{
uint160 t = n ^ uint160(id);
uint160 acc = t % 360;
return bytes(Strings.toString(acc));
}
function _adjustedHourMinutes(uint256 id)
internal
view
returns (uint256 hour, uint256 minute)
{
int256 signedUserTimestamp = int256(block.timestamp) - 60 * timeOffsetMinutes[id];
uint256 userTimestamp;
// this won't realistically ever happen
if (signedUserTimestamp <= 0) {
userTimestamp = 0;
} else {
userTimestamp = uint256(signedUserTimestamp);
}
hour = BokkyPooBahsDateTimeLibrary.getHour(userTimestamp);
minute = BokkyPooBahsDateTimeLibrary.getMinute(userTimestamp);
}
} | /// @notice ETH-Time NFT contract. | NatSpecSingleLine | setTimeOffsetMinutes | function setTimeOffsetMinutes(uint256 id, int128 offsetMinutes)
public
{
// checks: id exists
if (ownerOf[id] == address(0)) {
revert EthTime__DoesNotExist();
}
// checks: sender is owner.
if (ownerOf[id] != msg.sender) {
revert EthTime__NotOwner();
}
// checks: validate time offset
_validateTimeOffset(offsetMinutes);
// effects: update time offset
timeOffsetMinutes[id] = offsetMinutes;
emit TimeOffsetUpdated(id, offsetMinutes);
}
| /// @notice Sets the time offset of the given token id.
/// @dev Use minutes because some timezones (like IST) are offset by half an hour.
/// @param id the NFT unique id.
/// @param offsetMinutes the offset in minutes. | NatSpecSingleLine | v0.8.10+commit.fc410830 | {
"func_code_index": [
4265,
4835
]
} | 8,654 |
||
EthTime | EthTime.sol | 0xe339d6f5a42e581dce5a479fca0ed02248a6dca4 | Solidity | EthTime | contract EthTime is ERC721, CharitySplitter, Ownable, ReentrancyGuard {
//////////////////////////////////////////////////////////////////////////
// //
// Constructor //
// //
//////////////////////////////////////////////////////////////////////////
constructor(address payable charity, uint256 charityFeeBp)
ERC721("ETH Time", "ETHT")
CharitySplitter(charity, charityFeeBp)
{
}
receive() external payable {}
//////////////////////////////////////////////////////////////////////////
// //
// Transfer with History //
// //
//////////////////////////////////////////////////////////////////////////
/// @notice The state of each NFT.
mapping(uint256 => uint160) public historyAccumulator;
function transferFrom(address from, address to, uint256 id)
public
nonReentrant
override
{
_transferFrom(from, to, id);
}
function safeTransferFrom(address from, address to, uint256 id)
public
nonReentrant
override
{
_transferFrom(from, to, id);
// interactions: check destination can handle ERC721
require(
to.code.length == 0 ||
ERC721TokenReceiver(to).onERC721Received(msg.sender, from, id, "") ==
ERC721TokenReceiver.onERC721Received.selector,
"UNSAFE_RECIPIENT"
);
}
function safeTransferFrom(address from, address to, uint256 id, bytes memory /* data */)
public
nonReentrant
override
{
_transferFrom(from, to, id);
// interactions: check destination can handle ERC721
require(
to.code.length == 0 ||
ERC721TokenReceiver(to).onERC721Received(msg.sender, from, id, "") ==
ERC721TokenReceiver.onERC721Received.selector,
"UNSAFE_RECIPIENT"
);
}
//////////////////////////////////////////////////////////////////////////
// //
// Charity Splitter //
// //
//////////////////////////////////////////////////////////////////////////
/// @notice Withdraw charity balance to charity address.
/// @dev Anyone can call this at any time.
function withdrawCharityBalance()
public
nonReentrant
{
_withdrawCharityBalance();
}
/// @notice Withdraw owner balance to the specified address.
/// @param destination the address that receives the owner balance.
function withdrawOwnerBalance(address payable destination)
public
onlyOwner
nonReentrant
{
_withdrawOwnerBalance(destination);
}
/// @notice Update the address that receives the charity fee.
/// @param charity the new charity address.
function updateCharity(address payable charity)
public
onlyOwner
nonReentrant
{
_updateCharity(charity);
}
//////////////////////////////////////////////////////////////////////////
// //
// Timezone Management //
// //
//////////////////////////////////////////////////////////////////////////
mapping(uint256 => int128) public timeOffsetMinutes;
event TimeOffsetUpdated(uint256 indexed id, int128 offsetMinutes);
/// @notice Sets the time offset of the given token id.
/// @dev Use minutes because some timezones (like IST) are offset by half an hour.
/// @param id the NFT unique id.
/// @param offsetMinutes the offset in minutes.
function setTimeOffsetMinutes(uint256 id, int128 offsetMinutes)
public
{
// checks: id exists
if (ownerOf[id] == address(0)) {
revert EthTime__DoesNotExist();
}
// checks: sender is owner.
if (ownerOf[id] != msg.sender) {
revert EthTime__NotOwner();
}
// checks: validate time offset
_validateTimeOffset(offsetMinutes);
// effects: update time offset
timeOffsetMinutes[id] = offsetMinutes;
emit TimeOffsetUpdated(id, offsetMinutes);
}
function _validateTimeOffset(int128 offsetMinutes)
internal
{
int128 offsetSeconds = offsetMinutes * 60;
// checks: offset is [-12, +14] hours UTC
if (offsetSeconds > 14 hours || offsetSeconds < -12 hours) {
revert EthTime__InvalidTimeOffset();
}
}
//////////////////////////////////////////////////////////////////////////
// //
// Minting //
// //
//////////////////////////////////////////////////////////////////////////
/// @dev The number of tokens minted.
uint256 public totalSupply;
/// @dev The maximum number of mintable tokens.
uint256 public constant maximumSupply = 100;
uint256 private constant TARGET_PRICE = 1 ether;
uint256 private constant PRICE_INCREMENT = TARGET_PRICE / maximumSupply * 2;
/// @notice Mint a new NFT, transfering ownership to the given account.
/// @dev If the token id already exists, this method fails.
/// @param to the NFT ower.
/// @param offsetMinutes the time offset in minutes.
/// @param id the NFT unique id.
function mint(address to, int128 offsetMinutes, uint256 id)
public
payable
nonReentrant
virtual
{
// interactions: mint.
uint256 valueLeft = _mint(to, offsetMinutes, id, msg.value);
// interactions: send back leftover value.
if (valueLeft > 0) {
(bool success, ) = msg.sender.call{value: valueLeft}("");
require(success);
}
}
/// @notice Mint new NFTs, transfering ownership to the given account.
/// @dev If any of the token ids already exists, this method fails.
/// @param to the NFT ower.
/// @param offsetMinutes the time offset in minutes.
/// @param ids the NFT unique ids.
function batchMint(address to, int128 offsetMinutes, uint256[] calldata ids)
public
payable
nonReentrant
virtual
{
uint256 count = ids.length;
// checks: can mint count nfts
_validateBatchMintCount(count);
uint256 valueLeft = msg.value;
for (uint256 i = 0; i < count; i++) {
// interactions: mint.
valueLeft = _mint(to, offsetMinutes, ids[i], valueLeft);
}
// interactions: send back leftover value.
if (valueLeft > 0) {
(bool success, ) = msg.sender.call{value: valueLeft}("");
require(success);
}
}
/// @notice Get the price for minting the next `count` NFT.
function getBatchMintPrice(uint256 count)
public
view
returns (uint256)
{
// checks: can mint count nfts
_validateBatchMintCount(count);
uint256 supply = totalSupply;
uint256 price = 0;
for (uint256 i = 0; i < count; i++) {
price += _priceAtSupplyLevel(supply + i);
}
return price;
}
/// @notice Get the price for minting the next NFT.
function getMintPrice()
public
view
returns (uint256)
{
return _priceAtSupplyLevel(totalSupply);
}
function _mint(address to, int128 offsetMinutes, uint256 id, uint256 value)
internal
returns (uint256 valueLeft)
{
uint256 price = _priceAtSupplyLevel(totalSupply);
// checks: value is enough to mint the nft.
if (value < price) {
revert EthTime__InvalidMintValue();
}
// checks: minting causes going over maximum supply.
if (totalSupply == maximumSupply) {
revert EthTime__CollectionMintClosed();
}
// checks: validate offset
_validateTimeOffset(offsetMinutes);
// effects: seed history with unique starting value.
historyAccumulator[id] = uint160(id >> 4);
// effects: increment total supply.
totalSupply += 1;
// effects: update charity split.
_updateBalance(value);
// effects: set time offset
timeOffsetMinutes[id] = offsetMinutes;
// interactions: safe mint
_safeMint(to, id);
// return value left to be sent back to user.
valueLeft = value - price;
}
function _priceAtSupplyLevel(uint256 supply)
internal
pure
returns (uint256)
{
uint256 price = supply * PRICE_INCREMENT;
if (supply > 50) {
price = TARGET_PRICE;
}
return price;
}
function _validateBatchMintCount(uint256 count)
internal
view
{
// checks: no more than 10.
if (count > 10) {
revert EthTime__InvalidMintAmount();
}
// checks: minting does not push over the limit.
// notice that it would fail anyway.
if (totalSupply + count > maximumSupply) {
revert EthTime__InvalidMintAmount();
}
}
//////////////////////////////////////////////////////////////////////////
// //
// Token URI //
// //
//////////////////////////////////////////////////////////////////////////
/// @notice Returns the URI with the NFT metadata.
/// @dev Returns the base64 encoded metadata inline.
/// @param id the NFT unique id
function tokenURI(uint256 id)
public
view
override
returns (string memory)
{
if (ownerOf[id] == address(0)) {
revert EthTime__DoesNotExist();
}
string memory tokenId = Strings.toString(id);
(uint256 hour, uint256 minute) = _adjustedHourMinutes(id);
bytes memory topHue = _computeHue(historyAccumulator[id], id);
bytes memory bottomHue = _computeHue(uint160(ownerOf[id]), id);
int128 offset = timeOffsetMinutes[id];
bytes memory offsetSign = offset >= 0 ? bytes('+') : bytes('-');
uint256 offsetUnsigned = offset >= 0 ? uint256(int256(offset)) : uint256(int256(-offset));
return
string(
bytes.concat(
'data:application/json;base64,',
bytes(
Base64.encode(
bytes.concat(
'{"name": "ETH Time #',
bytes(tokenId),
'", "description": "ETH Time", "image": "data:image/svg+xml;base64,',
bytes(_tokenImage(topHue, bottomHue, hour, minute)),
'", "attributes": [{"trait_type": "top_color", "value": "hsl(', topHue, ',100%,89%)"},',
'{"trait_type": "bottom_color", "value": "hsl(', bottomHue, ',77%,36%)"},',
'{"trait_type": "time_offset", "value": "', offsetSign, bytes(Strings.toString(offsetUnsigned)), '"},',
'{"trait_type": "time", "value": "', bytes(Strings.toString(hour)), ':', bytes(Strings.toString(minute)), '"}]}'
)
)
)
)
);
}
/// @dev Generate a preview of the token that will be minted.
/// @param to the minter.
/// @param id the NFT unique id.
function tokenImagePreview(address to, uint256 id)
public
view
returns (string memory)
{
(uint256 hour, uint256 minute) = _adjustedHourMinutes(id);
bytes memory topHue = _computeHue(uint160(id >> 4), id);
bytes memory bottomHue = _computeHue(uint160(to), id);
return _tokenImage(topHue, bottomHue, hour, minute);
}
//////////////////////////////////////////////////////////////////////////
// //
// Private Functions //
// //
//////////////////////////////////////////////////////////////////////////
/// @dev Update the NFT history based on the transfer to the given account.
/// @param to the address that will receive the nft.
/// @param id the NFT unique id.
function _updateHistory(address to, uint256 id)
internal
{
// effects: xor existing value with address bytes content.
historyAccumulator[id] ^= uint160(to) << 2;
}
function _transferFrom(address from, address to, uint256 id)
internal
{
// checks: sender and destination
require(from == ownerOf[id], "WRONG_FROM");
require(to != address(0), "INVALID_RECIPIENT");
// checks: can transfer
require(
msg.sender == from || msg.sender == getApproved[id] || isApprovedForAll[from][msg.sender],
"NOT_AUTHORIZED"
);
// effects: update balance
// Underflow of the sender's balance is impossible because we check for
// ownership above and the recipient's balance can't realistically overflow.
unchecked {
balanceOf[from]--;
balanceOf[to]++;
}
// effects: update owership
ownerOf[id] = to;
// effects: reclaim storage
delete getApproved[id];
// effects: update history
_updateHistory(to, id);
emit Transfer(from, to, id);
}
bytes constant onColor = "FFF";
bytes constant offColor = "333";
/// @dev Generate the SVG image for the given NFT.
function _tokenImage(bytes memory topHue, bytes memory bottomHue, uint256 hour, uint256 minute)
internal
pure
returns (string memory)
{
return
Base64.encode(
bytes.concat(
'<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 1000 1000">',
'<linearGradient id="bg" gradientTransform="rotate(90)">',
'<stop offset="0%" stop-color="hsl(', topHue, ',100%,89%)"/>',
'<stop offset="100%" stop-color="hsl(', bottomHue, ',77%,36%)"/>',
'</linearGradient>',
'<rect x="0" y="0" width="1000" height="1000" fill="url(#bg)"/>',
_binaryHour(hour),
_binaryMinute(minute),
'</svg>'
)
);
}
function _binaryHour(uint256 hour)
internal
pure
returns (bytes memory)
{
if (hour > 24) {
revert EthTime__NumberOutOfRange();
}
bytes[7] memory colors = _binaryColor(hour);
return
bytes.concat(
'<circle cx="665" cy="875" r="25" fill="#', colors[0], '"/>',
'<circle cx="665" cy="805" r="25" fill="#', colors[1], '"/>',
// skip colors[2]
'<circle cx="735" cy="875" r="25" fill="#', colors[3], '"/>',
'<circle cx="735" cy="805" r="25" fill="#', colors[4], '"/>',
'<circle cx="735" cy="735" r="25" fill="#', colors[5], '"/>',
'<circle cx="735" cy="665" r="25" fill="#', colors[6], '"/>'
);
}
function _binaryMinute(uint256 minute)
internal
pure
returns (bytes memory)
{
if (minute > 59) {
revert EthTime__NumberOutOfRange();
}
bytes[7] memory colors = _binaryColor(minute);
return
bytes.concat(
'<circle cx="805" cy="875" r="25" fill="#', colors[0], '"/>',
'<circle cx="805" cy="805" r="25" fill="#', colors[1], '"/>',
'<circle cx="805" cy="735" r="25" fill="#', colors[2], '"/>',
'<circle cx="875" cy="875" r="25" fill="#', colors[3], '"/>',
'<circle cx="875" cy="805" r="25" fill="#', colors[4], '"/>',
'<circle cx="875" cy="735" r="25" fill="#', colors[5], '"/>',
'<circle cx="875" cy="665" r="25" fill="#', colors[6], '"/>'
);
}
/// @dev Returns the colors to be used to display the time.
/// The first 3 bytes are used for the first digit, the remaining 4 bytes
/// for the second digit.
function _binaryColor(uint256 n)
internal
pure
returns (bytes[7] memory)
{
unchecked {
uint256 firstDigit = n / 10;
uint256 secondDigit = n % 10;
return [
(firstDigit & 0x1 != 0) ? onColor : offColor,
(firstDigit & 0x2 != 0) ? onColor : offColor,
(firstDigit & 0x4 != 0) ? onColor : offColor,
(secondDigit & 0x1 != 0) ? onColor : offColor,
(secondDigit & 0x2 != 0) ? onColor : offColor,
(secondDigit & 0x4 != 0) ? onColor : offColor,
(secondDigit & 0x8 != 0) ? onColor : offColor
];
}
}
function _computeHue(uint160 n, uint256 id)
internal
pure
returns (bytes memory)
{
uint160 t = n ^ uint160(id);
uint160 acc = t % 360;
return bytes(Strings.toString(acc));
}
function _adjustedHourMinutes(uint256 id)
internal
view
returns (uint256 hour, uint256 minute)
{
int256 signedUserTimestamp = int256(block.timestamp) - 60 * timeOffsetMinutes[id];
uint256 userTimestamp;
// this won't realistically ever happen
if (signedUserTimestamp <= 0) {
userTimestamp = 0;
} else {
userTimestamp = uint256(signedUserTimestamp);
}
hour = BokkyPooBahsDateTimeLibrary.getHour(userTimestamp);
minute = BokkyPooBahsDateTimeLibrary.getMinute(userTimestamp);
}
} | /// @notice ETH-Time NFT contract. | NatSpecSingleLine | mint | function mint(address to, int128 offsetMinutes, uint256 id)
public
payable
nonReentrant
virtual
{
// interactions: mint.
uint256 valueLeft = _mint(to, offsetMinutes, id, msg.value);
// interactions: send back leftover value.
if (valueLeft > 0) {
(bool success, ) = msg.sender.call{value: valueLeft}("");
require(success);
}
}
| /// @notice Mint a new NFT, transfering ownership to the given account.
/// @dev If the token id already exists, this method fails.
/// @param to the NFT ower.
/// @param offsetMinutes the time offset in minutes.
/// @param id the NFT unique id. | NatSpecSingleLine | v0.8.10+commit.fc410830 | {
"func_code_index": [
6127,
6565
]
} | 8,655 |
||
EthTime | EthTime.sol | 0xe339d6f5a42e581dce5a479fca0ed02248a6dca4 | Solidity | EthTime | contract EthTime is ERC721, CharitySplitter, Ownable, ReentrancyGuard {
//////////////////////////////////////////////////////////////////////////
// //
// Constructor //
// //
//////////////////////////////////////////////////////////////////////////
constructor(address payable charity, uint256 charityFeeBp)
ERC721("ETH Time", "ETHT")
CharitySplitter(charity, charityFeeBp)
{
}
receive() external payable {}
//////////////////////////////////////////////////////////////////////////
// //
// Transfer with History //
// //
//////////////////////////////////////////////////////////////////////////
/// @notice The state of each NFT.
mapping(uint256 => uint160) public historyAccumulator;
function transferFrom(address from, address to, uint256 id)
public
nonReentrant
override
{
_transferFrom(from, to, id);
}
function safeTransferFrom(address from, address to, uint256 id)
public
nonReentrant
override
{
_transferFrom(from, to, id);
// interactions: check destination can handle ERC721
require(
to.code.length == 0 ||
ERC721TokenReceiver(to).onERC721Received(msg.sender, from, id, "") ==
ERC721TokenReceiver.onERC721Received.selector,
"UNSAFE_RECIPIENT"
);
}
function safeTransferFrom(address from, address to, uint256 id, bytes memory /* data */)
public
nonReentrant
override
{
_transferFrom(from, to, id);
// interactions: check destination can handle ERC721
require(
to.code.length == 0 ||
ERC721TokenReceiver(to).onERC721Received(msg.sender, from, id, "") ==
ERC721TokenReceiver.onERC721Received.selector,
"UNSAFE_RECIPIENT"
);
}
//////////////////////////////////////////////////////////////////////////
// //
// Charity Splitter //
// //
//////////////////////////////////////////////////////////////////////////
/// @notice Withdraw charity balance to charity address.
/// @dev Anyone can call this at any time.
function withdrawCharityBalance()
public
nonReentrant
{
_withdrawCharityBalance();
}
/// @notice Withdraw owner balance to the specified address.
/// @param destination the address that receives the owner balance.
function withdrawOwnerBalance(address payable destination)
public
onlyOwner
nonReentrant
{
_withdrawOwnerBalance(destination);
}
/// @notice Update the address that receives the charity fee.
/// @param charity the new charity address.
function updateCharity(address payable charity)
public
onlyOwner
nonReentrant
{
_updateCharity(charity);
}
//////////////////////////////////////////////////////////////////////////
// //
// Timezone Management //
// //
//////////////////////////////////////////////////////////////////////////
mapping(uint256 => int128) public timeOffsetMinutes;
event TimeOffsetUpdated(uint256 indexed id, int128 offsetMinutes);
/// @notice Sets the time offset of the given token id.
/// @dev Use minutes because some timezones (like IST) are offset by half an hour.
/// @param id the NFT unique id.
/// @param offsetMinutes the offset in minutes.
function setTimeOffsetMinutes(uint256 id, int128 offsetMinutes)
public
{
// checks: id exists
if (ownerOf[id] == address(0)) {
revert EthTime__DoesNotExist();
}
// checks: sender is owner.
if (ownerOf[id] != msg.sender) {
revert EthTime__NotOwner();
}
// checks: validate time offset
_validateTimeOffset(offsetMinutes);
// effects: update time offset
timeOffsetMinutes[id] = offsetMinutes;
emit TimeOffsetUpdated(id, offsetMinutes);
}
function _validateTimeOffset(int128 offsetMinutes)
internal
{
int128 offsetSeconds = offsetMinutes * 60;
// checks: offset is [-12, +14] hours UTC
if (offsetSeconds > 14 hours || offsetSeconds < -12 hours) {
revert EthTime__InvalidTimeOffset();
}
}
//////////////////////////////////////////////////////////////////////////
// //
// Minting //
// //
//////////////////////////////////////////////////////////////////////////
/// @dev The number of tokens minted.
uint256 public totalSupply;
/// @dev The maximum number of mintable tokens.
uint256 public constant maximumSupply = 100;
uint256 private constant TARGET_PRICE = 1 ether;
uint256 private constant PRICE_INCREMENT = TARGET_PRICE / maximumSupply * 2;
/// @notice Mint a new NFT, transfering ownership to the given account.
/// @dev If the token id already exists, this method fails.
/// @param to the NFT ower.
/// @param offsetMinutes the time offset in minutes.
/// @param id the NFT unique id.
function mint(address to, int128 offsetMinutes, uint256 id)
public
payable
nonReentrant
virtual
{
// interactions: mint.
uint256 valueLeft = _mint(to, offsetMinutes, id, msg.value);
// interactions: send back leftover value.
if (valueLeft > 0) {
(bool success, ) = msg.sender.call{value: valueLeft}("");
require(success);
}
}
/// @notice Mint new NFTs, transfering ownership to the given account.
/// @dev If any of the token ids already exists, this method fails.
/// @param to the NFT ower.
/// @param offsetMinutes the time offset in minutes.
/// @param ids the NFT unique ids.
function batchMint(address to, int128 offsetMinutes, uint256[] calldata ids)
public
payable
nonReentrant
virtual
{
uint256 count = ids.length;
// checks: can mint count nfts
_validateBatchMintCount(count);
uint256 valueLeft = msg.value;
for (uint256 i = 0; i < count; i++) {
// interactions: mint.
valueLeft = _mint(to, offsetMinutes, ids[i], valueLeft);
}
// interactions: send back leftover value.
if (valueLeft > 0) {
(bool success, ) = msg.sender.call{value: valueLeft}("");
require(success);
}
}
/// @notice Get the price for minting the next `count` NFT.
function getBatchMintPrice(uint256 count)
public
view
returns (uint256)
{
// checks: can mint count nfts
_validateBatchMintCount(count);
uint256 supply = totalSupply;
uint256 price = 0;
for (uint256 i = 0; i < count; i++) {
price += _priceAtSupplyLevel(supply + i);
}
return price;
}
/// @notice Get the price for minting the next NFT.
function getMintPrice()
public
view
returns (uint256)
{
return _priceAtSupplyLevel(totalSupply);
}
function _mint(address to, int128 offsetMinutes, uint256 id, uint256 value)
internal
returns (uint256 valueLeft)
{
uint256 price = _priceAtSupplyLevel(totalSupply);
// checks: value is enough to mint the nft.
if (value < price) {
revert EthTime__InvalidMintValue();
}
// checks: minting causes going over maximum supply.
if (totalSupply == maximumSupply) {
revert EthTime__CollectionMintClosed();
}
// checks: validate offset
_validateTimeOffset(offsetMinutes);
// effects: seed history with unique starting value.
historyAccumulator[id] = uint160(id >> 4);
// effects: increment total supply.
totalSupply += 1;
// effects: update charity split.
_updateBalance(value);
// effects: set time offset
timeOffsetMinutes[id] = offsetMinutes;
// interactions: safe mint
_safeMint(to, id);
// return value left to be sent back to user.
valueLeft = value - price;
}
function _priceAtSupplyLevel(uint256 supply)
internal
pure
returns (uint256)
{
uint256 price = supply * PRICE_INCREMENT;
if (supply > 50) {
price = TARGET_PRICE;
}
return price;
}
function _validateBatchMintCount(uint256 count)
internal
view
{
// checks: no more than 10.
if (count > 10) {
revert EthTime__InvalidMintAmount();
}
// checks: minting does not push over the limit.
// notice that it would fail anyway.
if (totalSupply + count > maximumSupply) {
revert EthTime__InvalidMintAmount();
}
}
//////////////////////////////////////////////////////////////////////////
// //
// Token URI //
// //
//////////////////////////////////////////////////////////////////////////
/// @notice Returns the URI with the NFT metadata.
/// @dev Returns the base64 encoded metadata inline.
/// @param id the NFT unique id
function tokenURI(uint256 id)
public
view
override
returns (string memory)
{
if (ownerOf[id] == address(0)) {
revert EthTime__DoesNotExist();
}
string memory tokenId = Strings.toString(id);
(uint256 hour, uint256 minute) = _adjustedHourMinutes(id);
bytes memory topHue = _computeHue(historyAccumulator[id], id);
bytes memory bottomHue = _computeHue(uint160(ownerOf[id]), id);
int128 offset = timeOffsetMinutes[id];
bytes memory offsetSign = offset >= 0 ? bytes('+') : bytes('-');
uint256 offsetUnsigned = offset >= 0 ? uint256(int256(offset)) : uint256(int256(-offset));
return
string(
bytes.concat(
'data:application/json;base64,',
bytes(
Base64.encode(
bytes.concat(
'{"name": "ETH Time #',
bytes(tokenId),
'", "description": "ETH Time", "image": "data:image/svg+xml;base64,',
bytes(_tokenImage(topHue, bottomHue, hour, minute)),
'", "attributes": [{"trait_type": "top_color", "value": "hsl(', topHue, ',100%,89%)"},',
'{"trait_type": "bottom_color", "value": "hsl(', bottomHue, ',77%,36%)"},',
'{"trait_type": "time_offset", "value": "', offsetSign, bytes(Strings.toString(offsetUnsigned)), '"},',
'{"trait_type": "time", "value": "', bytes(Strings.toString(hour)), ':', bytes(Strings.toString(minute)), '"}]}'
)
)
)
)
);
}
/// @dev Generate a preview of the token that will be minted.
/// @param to the minter.
/// @param id the NFT unique id.
function tokenImagePreview(address to, uint256 id)
public
view
returns (string memory)
{
(uint256 hour, uint256 minute) = _adjustedHourMinutes(id);
bytes memory topHue = _computeHue(uint160(id >> 4), id);
bytes memory bottomHue = _computeHue(uint160(to), id);
return _tokenImage(topHue, bottomHue, hour, minute);
}
//////////////////////////////////////////////////////////////////////////
// //
// Private Functions //
// //
//////////////////////////////////////////////////////////////////////////
/// @dev Update the NFT history based on the transfer to the given account.
/// @param to the address that will receive the nft.
/// @param id the NFT unique id.
function _updateHistory(address to, uint256 id)
internal
{
// effects: xor existing value with address bytes content.
historyAccumulator[id] ^= uint160(to) << 2;
}
function _transferFrom(address from, address to, uint256 id)
internal
{
// checks: sender and destination
require(from == ownerOf[id], "WRONG_FROM");
require(to != address(0), "INVALID_RECIPIENT");
// checks: can transfer
require(
msg.sender == from || msg.sender == getApproved[id] || isApprovedForAll[from][msg.sender],
"NOT_AUTHORIZED"
);
// effects: update balance
// Underflow of the sender's balance is impossible because we check for
// ownership above and the recipient's balance can't realistically overflow.
unchecked {
balanceOf[from]--;
balanceOf[to]++;
}
// effects: update owership
ownerOf[id] = to;
// effects: reclaim storage
delete getApproved[id];
// effects: update history
_updateHistory(to, id);
emit Transfer(from, to, id);
}
bytes constant onColor = "FFF";
bytes constant offColor = "333";
/// @dev Generate the SVG image for the given NFT.
function _tokenImage(bytes memory topHue, bytes memory bottomHue, uint256 hour, uint256 minute)
internal
pure
returns (string memory)
{
return
Base64.encode(
bytes.concat(
'<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 1000 1000">',
'<linearGradient id="bg" gradientTransform="rotate(90)">',
'<stop offset="0%" stop-color="hsl(', topHue, ',100%,89%)"/>',
'<stop offset="100%" stop-color="hsl(', bottomHue, ',77%,36%)"/>',
'</linearGradient>',
'<rect x="0" y="0" width="1000" height="1000" fill="url(#bg)"/>',
_binaryHour(hour),
_binaryMinute(minute),
'</svg>'
)
);
}
function _binaryHour(uint256 hour)
internal
pure
returns (bytes memory)
{
if (hour > 24) {
revert EthTime__NumberOutOfRange();
}
bytes[7] memory colors = _binaryColor(hour);
return
bytes.concat(
'<circle cx="665" cy="875" r="25" fill="#', colors[0], '"/>',
'<circle cx="665" cy="805" r="25" fill="#', colors[1], '"/>',
// skip colors[2]
'<circle cx="735" cy="875" r="25" fill="#', colors[3], '"/>',
'<circle cx="735" cy="805" r="25" fill="#', colors[4], '"/>',
'<circle cx="735" cy="735" r="25" fill="#', colors[5], '"/>',
'<circle cx="735" cy="665" r="25" fill="#', colors[6], '"/>'
);
}
function _binaryMinute(uint256 minute)
internal
pure
returns (bytes memory)
{
if (minute > 59) {
revert EthTime__NumberOutOfRange();
}
bytes[7] memory colors = _binaryColor(minute);
return
bytes.concat(
'<circle cx="805" cy="875" r="25" fill="#', colors[0], '"/>',
'<circle cx="805" cy="805" r="25" fill="#', colors[1], '"/>',
'<circle cx="805" cy="735" r="25" fill="#', colors[2], '"/>',
'<circle cx="875" cy="875" r="25" fill="#', colors[3], '"/>',
'<circle cx="875" cy="805" r="25" fill="#', colors[4], '"/>',
'<circle cx="875" cy="735" r="25" fill="#', colors[5], '"/>',
'<circle cx="875" cy="665" r="25" fill="#', colors[6], '"/>'
);
}
/// @dev Returns the colors to be used to display the time.
/// The first 3 bytes are used for the first digit, the remaining 4 bytes
/// for the second digit.
function _binaryColor(uint256 n)
internal
pure
returns (bytes[7] memory)
{
unchecked {
uint256 firstDigit = n / 10;
uint256 secondDigit = n % 10;
return [
(firstDigit & 0x1 != 0) ? onColor : offColor,
(firstDigit & 0x2 != 0) ? onColor : offColor,
(firstDigit & 0x4 != 0) ? onColor : offColor,
(secondDigit & 0x1 != 0) ? onColor : offColor,
(secondDigit & 0x2 != 0) ? onColor : offColor,
(secondDigit & 0x4 != 0) ? onColor : offColor,
(secondDigit & 0x8 != 0) ? onColor : offColor
];
}
}
function _computeHue(uint160 n, uint256 id)
internal
pure
returns (bytes memory)
{
uint160 t = n ^ uint160(id);
uint160 acc = t % 360;
return bytes(Strings.toString(acc));
}
function _adjustedHourMinutes(uint256 id)
internal
view
returns (uint256 hour, uint256 minute)
{
int256 signedUserTimestamp = int256(block.timestamp) - 60 * timeOffsetMinutes[id];
uint256 userTimestamp;
// this won't realistically ever happen
if (signedUserTimestamp <= 0) {
userTimestamp = 0;
} else {
userTimestamp = uint256(signedUserTimestamp);
}
hour = BokkyPooBahsDateTimeLibrary.getHour(userTimestamp);
minute = BokkyPooBahsDateTimeLibrary.getMinute(userTimestamp);
}
} | /// @notice ETH-Time NFT contract. | NatSpecSingleLine | batchMint | function batchMint(address to, int128 offsetMinutes, uint256[] calldata ids)
public
payable
nonReentrant
virtual
{
uint256 count = ids.length;
// checks: can mint count nfts
_validateBatchMintCount(count);
uint256 valueLeft = msg.value;
for (uint256 i = 0; i < count; i++) {
// interactions: mint.
valueLeft = _mint(to, offsetMinutes, ids[i], valueLeft);
}
// interactions: send back leftover value.
if (valueLeft > 0) {
(bool success, ) = msg.sender.call{value: valueLeft}("");
require(success);
}
}
| /// @notice Mint new NFTs, transfering ownership to the given account.
/// @dev If any of the token ids already exists, this method fails.
/// @param to the NFT ower.
/// @param offsetMinutes the time offset in minutes.
/// @param ids the NFT unique ids. | NatSpecSingleLine | v0.8.10+commit.fc410830 | {
"func_code_index": [
6842,
7509
]
} | 8,656 |
||
EthTime | EthTime.sol | 0xe339d6f5a42e581dce5a479fca0ed02248a6dca4 | Solidity | EthTime | contract EthTime is ERC721, CharitySplitter, Ownable, ReentrancyGuard {
//////////////////////////////////////////////////////////////////////////
// //
// Constructor //
// //
//////////////////////////////////////////////////////////////////////////
constructor(address payable charity, uint256 charityFeeBp)
ERC721("ETH Time", "ETHT")
CharitySplitter(charity, charityFeeBp)
{
}
receive() external payable {}
//////////////////////////////////////////////////////////////////////////
// //
// Transfer with History //
// //
//////////////////////////////////////////////////////////////////////////
/// @notice The state of each NFT.
mapping(uint256 => uint160) public historyAccumulator;
function transferFrom(address from, address to, uint256 id)
public
nonReentrant
override
{
_transferFrom(from, to, id);
}
function safeTransferFrom(address from, address to, uint256 id)
public
nonReentrant
override
{
_transferFrom(from, to, id);
// interactions: check destination can handle ERC721
require(
to.code.length == 0 ||
ERC721TokenReceiver(to).onERC721Received(msg.sender, from, id, "") ==
ERC721TokenReceiver.onERC721Received.selector,
"UNSAFE_RECIPIENT"
);
}
function safeTransferFrom(address from, address to, uint256 id, bytes memory /* data */)
public
nonReentrant
override
{
_transferFrom(from, to, id);
// interactions: check destination can handle ERC721
require(
to.code.length == 0 ||
ERC721TokenReceiver(to).onERC721Received(msg.sender, from, id, "") ==
ERC721TokenReceiver.onERC721Received.selector,
"UNSAFE_RECIPIENT"
);
}
//////////////////////////////////////////////////////////////////////////
// //
// Charity Splitter //
// //
//////////////////////////////////////////////////////////////////////////
/// @notice Withdraw charity balance to charity address.
/// @dev Anyone can call this at any time.
function withdrawCharityBalance()
public
nonReentrant
{
_withdrawCharityBalance();
}
/// @notice Withdraw owner balance to the specified address.
/// @param destination the address that receives the owner balance.
function withdrawOwnerBalance(address payable destination)
public
onlyOwner
nonReentrant
{
_withdrawOwnerBalance(destination);
}
/// @notice Update the address that receives the charity fee.
/// @param charity the new charity address.
function updateCharity(address payable charity)
public
onlyOwner
nonReentrant
{
_updateCharity(charity);
}
//////////////////////////////////////////////////////////////////////////
// //
// Timezone Management //
// //
//////////////////////////////////////////////////////////////////////////
mapping(uint256 => int128) public timeOffsetMinutes;
event TimeOffsetUpdated(uint256 indexed id, int128 offsetMinutes);
/// @notice Sets the time offset of the given token id.
/// @dev Use minutes because some timezones (like IST) are offset by half an hour.
/// @param id the NFT unique id.
/// @param offsetMinutes the offset in minutes.
function setTimeOffsetMinutes(uint256 id, int128 offsetMinutes)
public
{
// checks: id exists
if (ownerOf[id] == address(0)) {
revert EthTime__DoesNotExist();
}
// checks: sender is owner.
if (ownerOf[id] != msg.sender) {
revert EthTime__NotOwner();
}
// checks: validate time offset
_validateTimeOffset(offsetMinutes);
// effects: update time offset
timeOffsetMinutes[id] = offsetMinutes;
emit TimeOffsetUpdated(id, offsetMinutes);
}
function _validateTimeOffset(int128 offsetMinutes)
internal
{
int128 offsetSeconds = offsetMinutes * 60;
// checks: offset is [-12, +14] hours UTC
if (offsetSeconds > 14 hours || offsetSeconds < -12 hours) {
revert EthTime__InvalidTimeOffset();
}
}
//////////////////////////////////////////////////////////////////////////
// //
// Minting //
// //
//////////////////////////////////////////////////////////////////////////
/// @dev The number of tokens minted.
uint256 public totalSupply;
/// @dev The maximum number of mintable tokens.
uint256 public constant maximumSupply = 100;
uint256 private constant TARGET_PRICE = 1 ether;
uint256 private constant PRICE_INCREMENT = TARGET_PRICE / maximumSupply * 2;
/// @notice Mint a new NFT, transfering ownership to the given account.
/// @dev If the token id already exists, this method fails.
/// @param to the NFT ower.
/// @param offsetMinutes the time offset in minutes.
/// @param id the NFT unique id.
function mint(address to, int128 offsetMinutes, uint256 id)
public
payable
nonReentrant
virtual
{
// interactions: mint.
uint256 valueLeft = _mint(to, offsetMinutes, id, msg.value);
// interactions: send back leftover value.
if (valueLeft > 0) {
(bool success, ) = msg.sender.call{value: valueLeft}("");
require(success);
}
}
/// @notice Mint new NFTs, transfering ownership to the given account.
/// @dev If any of the token ids already exists, this method fails.
/// @param to the NFT ower.
/// @param offsetMinutes the time offset in minutes.
/// @param ids the NFT unique ids.
function batchMint(address to, int128 offsetMinutes, uint256[] calldata ids)
public
payable
nonReentrant
virtual
{
uint256 count = ids.length;
// checks: can mint count nfts
_validateBatchMintCount(count);
uint256 valueLeft = msg.value;
for (uint256 i = 0; i < count; i++) {
// interactions: mint.
valueLeft = _mint(to, offsetMinutes, ids[i], valueLeft);
}
// interactions: send back leftover value.
if (valueLeft > 0) {
(bool success, ) = msg.sender.call{value: valueLeft}("");
require(success);
}
}
/// @notice Get the price for minting the next `count` NFT.
function getBatchMintPrice(uint256 count)
public
view
returns (uint256)
{
// checks: can mint count nfts
_validateBatchMintCount(count);
uint256 supply = totalSupply;
uint256 price = 0;
for (uint256 i = 0; i < count; i++) {
price += _priceAtSupplyLevel(supply + i);
}
return price;
}
/// @notice Get the price for minting the next NFT.
function getMintPrice()
public
view
returns (uint256)
{
return _priceAtSupplyLevel(totalSupply);
}
function _mint(address to, int128 offsetMinutes, uint256 id, uint256 value)
internal
returns (uint256 valueLeft)
{
uint256 price = _priceAtSupplyLevel(totalSupply);
// checks: value is enough to mint the nft.
if (value < price) {
revert EthTime__InvalidMintValue();
}
// checks: minting causes going over maximum supply.
if (totalSupply == maximumSupply) {
revert EthTime__CollectionMintClosed();
}
// checks: validate offset
_validateTimeOffset(offsetMinutes);
// effects: seed history with unique starting value.
historyAccumulator[id] = uint160(id >> 4);
// effects: increment total supply.
totalSupply += 1;
// effects: update charity split.
_updateBalance(value);
// effects: set time offset
timeOffsetMinutes[id] = offsetMinutes;
// interactions: safe mint
_safeMint(to, id);
// return value left to be sent back to user.
valueLeft = value - price;
}
function _priceAtSupplyLevel(uint256 supply)
internal
pure
returns (uint256)
{
uint256 price = supply * PRICE_INCREMENT;
if (supply > 50) {
price = TARGET_PRICE;
}
return price;
}
function _validateBatchMintCount(uint256 count)
internal
view
{
// checks: no more than 10.
if (count > 10) {
revert EthTime__InvalidMintAmount();
}
// checks: minting does not push over the limit.
// notice that it would fail anyway.
if (totalSupply + count > maximumSupply) {
revert EthTime__InvalidMintAmount();
}
}
//////////////////////////////////////////////////////////////////////////
// //
// Token URI //
// //
//////////////////////////////////////////////////////////////////////////
/// @notice Returns the URI with the NFT metadata.
/// @dev Returns the base64 encoded metadata inline.
/// @param id the NFT unique id
function tokenURI(uint256 id)
public
view
override
returns (string memory)
{
if (ownerOf[id] == address(0)) {
revert EthTime__DoesNotExist();
}
string memory tokenId = Strings.toString(id);
(uint256 hour, uint256 minute) = _adjustedHourMinutes(id);
bytes memory topHue = _computeHue(historyAccumulator[id], id);
bytes memory bottomHue = _computeHue(uint160(ownerOf[id]), id);
int128 offset = timeOffsetMinutes[id];
bytes memory offsetSign = offset >= 0 ? bytes('+') : bytes('-');
uint256 offsetUnsigned = offset >= 0 ? uint256(int256(offset)) : uint256(int256(-offset));
return
string(
bytes.concat(
'data:application/json;base64,',
bytes(
Base64.encode(
bytes.concat(
'{"name": "ETH Time #',
bytes(tokenId),
'", "description": "ETH Time", "image": "data:image/svg+xml;base64,',
bytes(_tokenImage(topHue, bottomHue, hour, minute)),
'", "attributes": [{"trait_type": "top_color", "value": "hsl(', topHue, ',100%,89%)"},',
'{"trait_type": "bottom_color", "value": "hsl(', bottomHue, ',77%,36%)"},',
'{"trait_type": "time_offset", "value": "', offsetSign, bytes(Strings.toString(offsetUnsigned)), '"},',
'{"trait_type": "time", "value": "', bytes(Strings.toString(hour)), ':', bytes(Strings.toString(minute)), '"}]}'
)
)
)
)
);
}
/// @dev Generate a preview of the token that will be minted.
/// @param to the minter.
/// @param id the NFT unique id.
function tokenImagePreview(address to, uint256 id)
public
view
returns (string memory)
{
(uint256 hour, uint256 minute) = _adjustedHourMinutes(id);
bytes memory topHue = _computeHue(uint160(id >> 4), id);
bytes memory bottomHue = _computeHue(uint160(to), id);
return _tokenImage(topHue, bottomHue, hour, minute);
}
//////////////////////////////////////////////////////////////////////////
// //
// Private Functions //
// //
//////////////////////////////////////////////////////////////////////////
/// @dev Update the NFT history based on the transfer to the given account.
/// @param to the address that will receive the nft.
/// @param id the NFT unique id.
function _updateHistory(address to, uint256 id)
internal
{
// effects: xor existing value with address bytes content.
historyAccumulator[id] ^= uint160(to) << 2;
}
function _transferFrom(address from, address to, uint256 id)
internal
{
// checks: sender and destination
require(from == ownerOf[id], "WRONG_FROM");
require(to != address(0), "INVALID_RECIPIENT");
// checks: can transfer
require(
msg.sender == from || msg.sender == getApproved[id] || isApprovedForAll[from][msg.sender],
"NOT_AUTHORIZED"
);
// effects: update balance
// Underflow of the sender's balance is impossible because we check for
// ownership above and the recipient's balance can't realistically overflow.
unchecked {
balanceOf[from]--;
balanceOf[to]++;
}
// effects: update owership
ownerOf[id] = to;
// effects: reclaim storage
delete getApproved[id];
// effects: update history
_updateHistory(to, id);
emit Transfer(from, to, id);
}
bytes constant onColor = "FFF";
bytes constant offColor = "333";
/// @dev Generate the SVG image for the given NFT.
function _tokenImage(bytes memory topHue, bytes memory bottomHue, uint256 hour, uint256 minute)
internal
pure
returns (string memory)
{
return
Base64.encode(
bytes.concat(
'<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 1000 1000">',
'<linearGradient id="bg" gradientTransform="rotate(90)">',
'<stop offset="0%" stop-color="hsl(', topHue, ',100%,89%)"/>',
'<stop offset="100%" stop-color="hsl(', bottomHue, ',77%,36%)"/>',
'</linearGradient>',
'<rect x="0" y="0" width="1000" height="1000" fill="url(#bg)"/>',
_binaryHour(hour),
_binaryMinute(minute),
'</svg>'
)
);
}
function _binaryHour(uint256 hour)
internal
pure
returns (bytes memory)
{
if (hour > 24) {
revert EthTime__NumberOutOfRange();
}
bytes[7] memory colors = _binaryColor(hour);
return
bytes.concat(
'<circle cx="665" cy="875" r="25" fill="#', colors[0], '"/>',
'<circle cx="665" cy="805" r="25" fill="#', colors[1], '"/>',
// skip colors[2]
'<circle cx="735" cy="875" r="25" fill="#', colors[3], '"/>',
'<circle cx="735" cy="805" r="25" fill="#', colors[4], '"/>',
'<circle cx="735" cy="735" r="25" fill="#', colors[5], '"/>',
'<circle cx="735" cy="665" r="25" fill="#', colors[6], '"/>'
);
}
function _binaryMinute(uint256 minute)
internal
pure
returns (bytes memory)
{
if (minute > 59) {
revert EthTime__NumberOutOfRange();
}
bytes[7] memory colors = _binaryColor(minute);
return
bytes.concat(
'<circle cx="805" cy="875" r="25" fill="#', colors[0], '"/>',
'<circle cx="805" cy="805" r="25" fill="#', colors[1], '"/>',
'<circle cx="805" cy="735" r="25" fill="#', colors[2], '"/>',
'<circle cx="875" cy="875" r="25" fill="#', colors[3], '"/>',
'<circle cx="875" cy="805" r="25" fill="#', colors[4], '"/>',
'<circle cx="875" cy="735" r="25" fill="#', colors[5], '"/>',
'<circle cx="875" cy="665" r="25" fill="#', colors[6], '"/>'
);
}
/// @dev Returns the colors to be used to display the time.
/// The first 3 bytes are used for the first digit, the remaining 4 bytes
/// for the second digit.
function _binaryColor(uint256 n)
internal
pure
returns (bytes[7] memory)
{
unchecked {
uint256 firstDigit = n / 10;
uint256 secondDigit = n % 10;
return [
(firstDigit & 0x1 != 0) ? onColor : offColor,
(firstDigit & 0x2 != 0) ? onColor : offColor,
(firstDigit & 0x4 != 0) ? onColor : offColor,
(secondDigit & 0x1 != 0) ? onColor : offColor,
(secondDigit & 0x2 != 0) ? onColor : offColor,
(secondDigit & 0x4 != 0) ? onColor : offColor,
(secondDigit & 0x8 != 0) ? onColor : offColor
];
}
}
function _computeHue(uint160 n, uint256 id)
internal
pure
returns (bytes memory)
{
uint160 t = n ^ uint160(id);
uint160 acc = t % 360;
return bytes(Strings.toString(acc));
}
function _adjustedHourMinutes(uint256 id)
internal
view
returns (uint256 hour, uint256 minute)
{
int256 signedUserTimestamp = int256(block.timestamp) - 60 * timeOffsetMinutes[id];
uint256 userTimestamp;
// this won't realistically ever happen
if (signedUserTimestamp <= 0) {
userTimestamp = 0;
} else {
userTimestamp = uint256(signedUserTimestamp);
}
hour = BokkyPooBahsDateTimeLibrary.getHour(userTimestamp);
minute = BokkyPooBahsDateTimeLibrary.getMinute(userTimestamp);
}
} | /// @notice ETH-Time NFT contract. | NatSpecSingleLine | getBatchMintPrice | function getBatchMintPrice(uint256 count)
public
view
returns (uint256)
{
// checks: can mint count nfts
_validateBatchMintCount(count);
uint256 supply = totalSupply;
uint256 price = 0;
for (uint256 i = 0; i < count; i++) {
price += _priceAtSupplyLevel(supply + i);
}
return price;
}
| /// @notice Get the price for minting the next `count` NFT. | NatSpecSingleLine | v0.8.10+commit.fc410830 | {
"func_code_index": [
7575,
7972
]
} | 8,657 |
||
EthTime | EthTime.sol | 0xe339d6f5a42e581dce5a479fca0ed02248a6dca4 | Solidity | EthTime | contract EthTime is ERC721, CharitySplitter, Ownable, ReentrancyGuard {
//////////////////////////////////////////////////////////////////////////
// //
// Constructor //
// //
//////////////////////////////////////////////////////////////////////////
constructor(address payable charity, uint256 charityFeeBp)
ERC721("ETH Time", "ETHT")
CharitySplitter(charity, charityFeeBp)
{
}
receive() external payable {}
//////////////////////////////////////////////////////////////////////////
// //
// Transfer with History //
// //
//////////////////////////////////////////////////////////////////////////
/// @notice The state of each NFT.
mapping(uint256 => uint160) public historyAccumulator;
function transferFrom(address from, address to, uint256 id)
public
nonReentrant
override
{
_transferFrom(from, to, id);
}
function safeTransferFrom(address from, address to, uint256 id)
public
nonReentrant
override
{
_transferFrom(from, to, id);
// interactions: check destination can handle ERC721
require(
to.code.length == 0 ||
ERC721TokenReceiver(to).onERC721Received(msg.sender, from, id, "") ==
ERC721TokenReceiver.onERC721Received.selector,
"UNSAFE_RECIPIENT"
);
}
function safeTransferFrom(address from, address to, uint256 id, bytes memory /* data */)
public
nonReentrant
override
{
_transferFrom(from, to, id);
// interactions: check destination can handle ERC721
require(
to.code.length == 0 ||
ERC721TokenReceiver(to).onERC721Received(msg.sender, from, id, "") ==
ERC721TokenReceiver.onERC721Received.selector,
"UNSAFE_RECIPIENT"
);
}
//////////////////////////////////////////////////////////////////////////
// //
// Charity Splitter //
// //
//////////////////////////////////////////////////////////////////////////
/// @notice Withdraw charity balance to charity address.
/// @dev Anyone can call this at any time.
function withdrawCharityBalance()
public
nonReentrant
{
_withdrawCharityBalance();
}
/// @notice Withdraw owner balance to the specified address.
/// @param destination the address that receives the owner balance.
function withdrawOwnerBalance(address payable destination)
public
onlyOwner
nonReentrant
{
_withdrawOwnerBalance(destination);
}
/// @notice Update the address that receives the charity fee.
/// @param charity the new charity address.
function updateCharity(address payable charity)
public
onlyOwner
nonReentrant
{
_updateCharity(charity);
}
//////////////////////////////////////////////////////////////////////////
// //
// Timezone Management //
// //
//////////////////////////////////////////////////////////////////////////
mapping(uint256 => int128) public timeOffsetMinutes;
event TimeOffsetUpdated(uint256 indexed id, int128 offsetMinutes);
/// @notice Sets the time offset of the given token id.
/// @dev Use minutes because some timezones (like IST) are offset by half an hour.
/// @param id the NFT unique id.
/// @param offsetMinutes the offset in minutes.
function setTimeOffsetMinutes(uint256 id, int128 offsetMinutes)
public
{
// checks: id exists
if (ownerOf[id] == address(0)) {
revert EthTime__DoesNotExist();
}
// checks: sender is owner.
if (ownerOf[id] != msg.sender) {
revert EthTime__NotOwner();
}
// checks: validate time offset
_validateTimeOffset(offsetMinutes);
// effects: update time offset
timeOffsetMinutes[id] = offsetMinutes;
emit TimeOffsetUpdated(id, offsetMinutes);
}
function _validateTimeOffset(int128 offsetMinutes)
internal
{
int128 offsetSeconds = offsetMinutes * 60;
// checks: offset is [-12, +14] hours UTC
if (offsetSeconds > 14 hours || offsetSeconds < -12 hours) {
revert EthTime__InvalidTimeOffset();
}
}
//////////////////////////////////////////////////////////////////////////
// //
// Minting //
// //
//////////////////////////////////////////////////////////////////////////
/// @dev The number of tokens minted.
uint256 public totalSupply;
/// @dev The maximum number of mintable tokens.
uint256 public constant maximumSupply = 100;
uint256 private constant TARGET_PRICE = 1 ether;
uint256 private constant PRICE_INCREMENT = TARGET_PRICE / maximumSupply * 2;
/// @notice Mint a new NFT, transfering ownership to the given account.
/// @dev If the token id already exists, this method fails.
/// @param to the NFT ower.
/// @param offsetMinutes the time offset in minutes.
/// @param id the NFT unique id.
function mint(address to, int128 offsetMinutes, uint256 id)
public
payable
nonReentrant
virtual
{
// interactions: mint.
uint256 valueLeft = _mint(to, offsetMinutes, id, msg.value);
// interactions: send back leftover value.
if (valueLeft > 0) {
(bool success, ) = msg.sender.call{value: valueLeft}("");
require(success);
}
}
/// @notice Mint new NFTs, transfering ownership to the given account.
/// @dev If any of the token ids already exists, this method fails.
/// @param to the NFT ower.
/// @param offsetMinutes the time offset in minutes.
/// @param ids the NFT unique ids.
function batchMint(address to, int128 offsetMinutes, uint256[] calldata ids)
public
payable
nonReentrant
virtual
{
uint256 count = ids.length;
// checks: can mint count nfts
_validateBatchMintCount(count);
uint256 valueLeft = msg.value;
for (uint256 i = 0; i < count; i++) {
// interactions: mint.
valueLeft = _mint(to, offsetMinutes, ids[i], valueLeft);
}
// interactions: send back leftover value.
if (valueLeft > 0) {
(bool success, ) = msg.sender.call{value: valueLeft}("");
require(success);
}
}
/// @notice Get the price for minting the next `count` NFT.
function getBatchMintPrice(uint256 count)
public
view
returns (uint256)
{
// checks: can mint count nfts
_validateBatchMintCount(count);
uint256 supply = totalSupply;
uint256 price = 0;
for (uint256 i = 0; i < count; i++) {
price += _priceAtSupplyLevel(supply + i);
}
return price;
}
/// @notice Get the price for minting the next NFT.
function getMintPrice()
public
view
returns (uint256)
{
return _priceAtSupplyLevel(totalSupply);
}
function _mint(address to, int128 offsetMinutes, uint256 id, uint256 value)
internal
returns (uint256 valueLeft)
{
uint256 price = _priceAtSupplyLevel(totalSupply);
// checks: value is enough to mint the nft.
if (value < price) {
revert EthTime__InvalidMintValue();
}
// checks: minting causes going over maximum supply.
if (totalSupply == maximumSupply) {
revert EthTime__CollectionMintClosed();
}
// checks: validate offset
_validateTimeOffset(offsetMinutes);
// effects: seed history with unique starting value.
historyAccumulator[id] = uint160(id >> 4);
// effects: increment total supply.
totalSupply += 1;
// effects: update charity split.
_updateBalance(value);
// effects: set time offset
timeOffsetMinutes[id] = offsetMinutes;
// interactions: safe mint
_safeMint(to, id);
// return value left to be sent back to user.
valueLeft = value - price;
}
function _priceAtSupplyLevel(uint256 supply)
internal
pure
returns (uint256)
{
uint256 price = supply * PRICE_INCREMENT;
if (supply > 50) {
price = TARGET_PRICE;
}
return price;
}
function _validateBatchMintCount(uint256 count)
internal
view
{
// checks: no more than 10.
if (count > 10) {
revert EthTime__InvalidMintAmount();
}
// checks: minting does not push over the limit.
// notice that it would fail anyway.
if (totalSupply + count > maximumSupply) {
revert EthTime__InvalidMintAmount();
}
}
//////////////////////////////////////////////////////////////////////////
// //
// Token URI //
// //
//////////////////////////////////////////////////////////////////////////
/// @notice Returns the URI with the NFT metadata.
/// @dev Returns the base64 encoded metadata inline.
/// @param id the NFT unique id
function tokenURI(uint256 id)
public
view
override
returns (string memory)
{
if (ownerOf[id] == address(0)) {
revert EthTime__DoesNotExist();
}
string memory tokenId = Strings.toString(id);
(uint256 hour, uint256 minute) = _adjustedHourMinutes(id);
bytes memory topHue = _computeHue(historyAccumulator[id], id);
bytes memory bottomHue = _computeHue(uint160(ownerOf[id]), id);
int128 offset = timeOffsetMinutes[id];
bytes memory offsetSign = offset >= 0 ? bytes('+') : bytes('-');
uint256 offsetUnsigned = offset >= 0 ? uint256(int256(offset)) : uint256(int256(-offset));
return
string(
bytes.concat(
'data:application/json;base64,',
bytes(
Base64.encode(
bytes.concat(
'{"name": "ETH Time #',
bytes(tokenId),
'", "description": "ETH Time", "image": "data:image/svg+xml;base64,',
bytes(_tokenImage(topHue, bottomHue, hour, minute)),
'", "attributes": [{"trait_type": "top_color", "value": "hsl(', topHue, ',100%,89%)"},',
'{"trait_type": "bottom_color", "value": "hsl(', bottomHue, ',77%,36%)"},',
'{"trait_type": "time_offset", "value": "', offsetSign, bytes(Strings.toString(offsetUnsigned)), '"},',
'{"trait_type": "time", "value": "', bytes(Strings.toString(hour)), ':', bytes(Strings.toString(minute)), '"}]}'
)
)
)
)
);
}
/// @dev Generate a preview of the token that will be minted.
/// @param to the minter.
/// @param id the NFT unique id.
function tokenImagePreview(address to, uint256 id)
public
view
returns (string memory)
{
(uint256 hour, uint256 minute) = _adjustedHourMinutes(id);
bytes memory topHue = _computeHue(uint160(id >> 4), id);
bytes memory bottomHue = _computeHue(uint160(to), id);
return _tokenImage(topHue, bottomHue, hour, minute);
}
//////////////////////////////////////////////////////////////////////////
// //
// Private Functions //
// //
//////////////////////////////////////////////////////////////////////////
/// @dev Update the NFT history based on the transfer to the given account.
/// @param to the address that will receive the nft.
/// @param id the NFT unique id.
function _updateHistory(address to, uint256 id)
internal
{
// effects: xor existing value with address bytes content.
historyAccumulator[id] ^= uint160(to) << 2;
}
function _transferFrom(address from, address to, uint256 id)
internal
{
// checks: sender and destination
require(from == ownerOf[id], "WRONG_FROM");
require(to != address(0), "INVALID_RECIPIENT");
// checks: can transfer
require(
msg.sender == from || msg.sender == getApproved[id] || isApprovedForAll[from][msg.sender],
"NOT_AUTHORIZED"
);
// effects: update balance
// Underflow of the sender's balance is impossible because we check for
// ownership above and the recipient's balance can't realistically overflow.
unchecked {
balanceOf[from]--;
balanceOf[to]++;
}
// effects: update owership
ownerOf[id] = to;
// effects: reclaim storage
delete getApproved[id];
// effects: update history
_updateHistory(to, id);
emit Transfer(from, to, id);
}
bytes constant onColor = "FFF";
bytes constant offColor = "333";
/// @dev Generate the SVG image for the given NFT.
function _tokenImage(bytes memory topHue, bytes memory bottomHue, uint256 hour, uint256 minute)
internal
pure
returns (string memory)
{
return
Base64.encode(
bytes.concat(
'<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 1000 1000">',
'<linearGradient id="bg" gradientTransform="rotate(90)">',
'<stop offset="0%" stop-color="hsl(', topHue, ',100%,89%)"/>',
'<stop offset="100%" stop-color="hsl(', bottomHue, ',77%,36%)"/>',
'</linearGradient>',
'<rect x="0" y="0" width="1000" height="1000" fill="url(#bg)"/>',
_binaryHour(hour),
_binaryMinute(minute),
'</svg>'
)
);
}
function _binaryHour(uint256 hour)
internal
pure
returns (bytes memory)
{
if (hour > 24) {
revert EthTime__NumberOutOfRange();
}
bytes[7] memory colors = _binaryColor(hour);
return
bytes.concat(
'<circle cx="665" cy="875" r="25" fill="#', colors[0], '"/>',
'<circle cx="665" cy="805" r="25" fill="#', colors[1], '"/>',
// skip colors[2]
'<circle cx="735" cy="875" r="25" fill="#', colors[3], '"/>',
'<circle cx="735" cy="805" r="25" fill="#', colors[4], '"/>',
'<circle cx="735" cy="735" r="25" fill="#', colors[5], '"/>',
'<circle cx="735" cy="665" r="25" fill="#', colors[6], '"/>'
);
}
function _binaryMinute(uint256 minute)
internal
pure
returns (bytes memory)
{
if (minute > 59) {
revert EthTime__NumberOutOfRange();
}
bytes[7] memory colors = _binaryColor(minute);
return
bytes.concat(
'<circle cx="805" cy="875" r="25" fill="#', colors[0], '"/>',
'<circle cx="805" cy="805" r="25" fill="#', colors[1], '"/>',
'<circle cx="805" cy="735" r="25" fill="#', colors[2], '"/>',
'<circle cx="875" cy="875" r="25" fill="#', colors[3], '"/>',
'<circle cx="875" cy="805" r="25" fill="#', colors[4], '"/>',
'<circle cx="875" cy="735" r="25" fill="#', colors[5], '"/>',
'<circle cx="875" cy="665" r="25" fill="#', colors[6], '"/>'
);
}
/// @dev Returns the colors to be used to display the time.
/// The first 3 bytes are used for the first digit, the remaining 4 bytes
/// for the second digit.
function _binaryColor(uint256 n)
internal
pure
returns (bytes[7] memory)
{
unchecked {
uint256 firstDigit = n / 10;
uint256 secondDigit = n % 10;
return [
(firstDigit & 0x1 != 0) ? onColor : offColor,
(firstDigit & 0x2 != 0) ? onColor : offColor,
(firstDigit & 0x4 != 0) ? onColor : offColor,
(secondDigit & 0x1 != 0) ? onColor : offColor,
(secondDigit & 0x2 != 0) ? onColor : offColor,
(secondDigit & 0x4 != 0) ? onColor : offColor,
(secondDigit & 0x8 != 0) ? onColor : offColor
];
}
}
function _computeHue(uint160 n, uint256 id)
internal
pure
returns (bytes memory)
{
uint160 t = n ^ uint160(id);
uint160 acc = t % 360;
return bytes(Strings.toString(acc));
}
function _adjustedHourMinutes(uint256 id)
internal
view
returns (uint256 hour, uint256 minute)
{
int256 signedUserTimestamp = int256(block.timestamp) - 60 * timeOffsetMinutes[id];
uint256 userTimestamp;
// this won't realistically ever happen
if (signedUserTimestamp <= 0) {
userTimestamp = 0;
} else {
userTimestamp = uint256(signedUserTimestamp);
}
hour = BokkyPooBahsDateTimeLibrary.getHour(userTimestamp);
minute = BokkyPooBahsDateTimeLibrary.getMinute(userTimestamp);
}
} | /// @notice ETH-Time NFT contract. | NatSpecSingleLine | getMintPrice | function getMintPrice()
public
view
returns (uint256)
{
return _priceAtSupplyLevel(totalSupply);
}
| /// @notice Get the price for minting the next NFT. | NatSpecSingleLine | v0.8.10+commit.fc410830 | {
"func_code_index": [
8030,
8172
]
} | 8,658 |
||
EthTime | EthTime.sol | 0xe339d6f5a42e581dce5a479fca0ed02248a6dca4 | Solidity | EthTime | contract EthTime is ERC721, CharitySplitter, Ownable, ReentrancyGuard {
//////////////////////////////////////////////////////////////////////////
// //
// Constructor //
// //
//////////////////////////////////////////////////////////////////////////
constructor(address payable charity, uint256 charityFeeBp)
ERC721("ETH Time", "ETHT")
CharitySplitter(charity, charityFeeBp)
{
}
receive() external payable {}
//////////////////////////////////////////////////////////////////////////
// //
// Transfer with History //
// //
//////////////////////////////////////////////////////////////////////////
/// @notice The state of each NFT.
mapping(uint256 => uint160) public historyAccumulator;
function transferFrom(address from, address to, uint256 id)
public
nonReentrant
override
{
_transferFrom(from, to, id);
}
function safeTransferFrom(address from, address to, uint256 id)
public
nonReentrant
override
{
_transferFrom(from, to, id);
// interactions: check destination can handle ERC721
require(
to.code.length == 0 ||
ERC721TokenReceiver(to).onERC721Received(msg.sender, from, id, "") ==
ERC721TokenReceiver.onERC721Received.selector,
"UNSAFE_RECIPIENT"
);
}
function safeTransferFrom(address from, address to, uint256 id, bytes memory /* data */)
public
nonReentrant
override
{
_transferFrom(from, to, id);
// interactions: check destination can handle ERC721
require(
to.code.length == 0 ||
ERC721TokenReceiver(to).onERC721Received(msg.sender, from, id, "") ==
ERC721TokenReceiver.onERC721Received.selector,
"UNSAFE_RECIPIENT"
);
}
//////////////////////////////////////////////////////////////////////////
// //
// Charity Splitter //
// //
//////////////////////////////////////////////////////////////////////////
/// @notice Withdraw charity balance to charity address.
/// @dev Anyone can call this at any time.
function withdrawCharityBalance()
public
nonReentrant
{
_withdrawCharityBalance();
}
/// @notice Withdraw owner balance to the specified address.
/// @param destination the address that receives the owner balance.
function withdrawOwnerBalance(address payable destination)
public
onlyOwner
nonReentrant
{
_withdrawOwnerBalance(destination);
}
/// @notice Update the address that receives the charity fee.
/// @param charity the new charity address.
function updateCharity(address payable charity)
public
onlyOwner
nonReentrant
{
_updateCharity(charity);
}
//////////////////////////////////////////////////////////////////////////
// //
// Timezone Management //
// //
//////////////////////////////////////////////////////////////////////////
mapping(uint256 => int128) public timeOffsetMinutes;
event TimeOffsetUpdated(uint256 indexed id, int128 offsetMinutes);
/// @notice Sets the time offset of the given token id.
/// @dev Use minutes because some timezones (like IST) are offset by half an hour.
/// @param id the NFT unique id.
/// @param offsetMinutes the offset in minutes.
function setTimeOffsetMinutes(uint256 id, int128 offsetMinutes)
public
{
// checks: id exists
if (ownerOf[id] == address(0)) {
revert EthTime__DoesNotExist();
}
// checks: sender is owner.
if (ownerOf[id] != msg.sender) {
revert EthTime__NotOwner();
}
// checks: validate time offset
_validateTimeOffset(offsetMinutes);
// effects: update time offset
timeOffsetMinutes[id] = offsetMinutes;
emit TimeOffsetUpdated(id, offsetMinutes);
}
function _validateTimeOffset(int128 offsetMinutes)
internal
{
int128 offsetSeconds = offsetMinutes * 60;
// checks: offset is [-12, +14] hours UTC
if (offsetSeconds > 14 hours || offsetSeconds < -12 hours) {
revert EthTime__InvalidTimeOffset();
}
}
//////////////////////////////////////////////////////////////////////////
// //
// Minting //
// //
//////////////////////////////////////////////////////////////////////////
/// @dev The number of tokens minted.
uint256 public totalSupply;
/// @dev The maximum number of mintable tokens.
uint256 public constant maximumSupply = 100;
uint256 private constant TARGET_PRICE = 1 ether;
uint256 private constant PRICE_INCREMENT = TARGET_PRICE / maximumSupply * 2;
/// @notice Mint a new NFT, transfering ownership to the given account.
/// @dev If the token id already exists, this method fails.
/// @param to the NFT ower.
/// @param offsetMinutes the time offset in minutes.
/// @param id the NFT unique id.
function mint(address to, int128 offsetMinutes, uint256 id)
public
payable
nonReentrant
virtual
{
// interactions: mint.
uint256 valueLeft = _mint(to, offsetMinutes, id, msg.value);
// interactions: send back leftover value.
if (valueLeft > 0) {
(bool success, ) = msg.sender.call{value: valueLeft}("");
require(success);
}
}
/// @notice Mint new NFTs, transfering ownership to the given account.
/// @dev If any of the token ids already exists, this method fails.
/// @param to the NFT ower.
/// @param offsetMinutes the time offset in minutes.
/// @param ids the NFT unique ids.
function batchMint(address to, int128 offsetMinutes, uint256[] calldata ids)
public
payable
nonReentrant
virtual
{
uint256 count = ids.length;
// checks: can mint count nfts
_validateBatchMintCount(count);
uint256 valueLeft = msg.value;
for (uint256 i = 0; i < count; i++) {
// interactions: mint.
valueLeft = _mint(to, offsetMinutes, ids[i], valueLeft);
}
// interactions: send back leftover value.
if (valueLeft > 0) {
(bool success, ) = msg.sender.call{value: valueLeft}("");
require(success);
}
}
/// @notice Get the price for minting the next `count` NFT.
function getBatchMintPrice(uint256 count)
public
view
returns (uint256)
{
// checks: can mint count nfts
_validateBatchMintCount(count);
uint256 supply = totalSupply;
uint256 price = 0;
for (uint256 i = 0; i < count; i++) {
price += _priceAtSupplyLevel(supply + i);
}
return price;
}
/// @notice Get the price for minting the next NFT.
function getMintPrice()
public
view
returns (uint256)
{
return _priceAtSupplyLevel(totalSupply);
}
function _mint(address to, int128 offsetMinutes, uint256 id, uint256 value)
internal
returns (uint256 valueLeft)
{
uint256 price = _priceAtSupplyLevel(totalSupply);
// checks: value is enough to mint the nft.
if (value < price) {
revert EthTime__InvalidMintValue();
}
// checks: minting causes going over maximum supply.
if (totalSupply == maximumSupply) {
revert EthTime__CollectionMintClosed();
}
// checks: validate offset
_validateTimeOffset(offsetMinutes);
// effects: seed history with unique starting value.
historyAccumulator[id] = uint160(id >> 4);
// effects: increment total supply.
totalSupply += 1;
// effects: update charity split.
_updateBalance(value);
// effects: set time offset
timeOffsetMinutes[id] = offsetMinutes;
// interactions: safe mint
_safeMint(to, id);
// return value left to be sent back to user.
valueLeft = value - price;
}
function _priceAtSupplyLevel(uint256 supply)
internal
pure
returns (uint256)
{
uint256 price = supply * PRICE_INCREMENT;
if (supply > 50) {
price = TARGET_PRICE;
}
return price;
}
function _validateBatchMintCount(uint256 count)
internal
view
{
// checks: no more than 10.
if (count > 10) {
revert EthTime__InvalidMintAmount();
}
// checks: minting does not push over the limit.
// notice that it would fail anyway.
if (totalSupply + count > maximumSupply) {
revert EthTime__InvalidMintAmount();
}
}
//////////////////////////////////////////////////////////////////////////
// //
// Token URI //
// //
//////////////////////////////////////////////////////////////////////////
/// @notice Returns the URI with the NFT metadata.
/// @dev Returns the base64 encoded metadata inline.
/// @param id the NFT unique id
function tokenURI(uint256 id)
public
view
override
returns (string memory)
{
if (ownerOf[id] == address(0)) {
revert EthTime__DoesNotExist();
}
string memory tokenId = Strings.toString(id);
(uint256 hour, uint256 minute) = _adjustedHourMinutes(id);
bytes memory topHue = _computeHue(historyAccumulator[id], id);
bytes memory bottomHue = _computeHue(uint160(ownerOf[id]), id);
int128 offset = timeOffsetMinutes[id];
bytes memory offsetSign = offset >= 0 ? bytes('+') : bytes('-');
uint256 offsetUnsigned = offset >= 0 ? uint256(int256(offset)) : uint256(int256(-offset));
return
string(
bytes.concat(
'data:application/json;base64,',
bytes(
Base64.encode(
bytes.concat(
'{"name": "ETH Time #',
bytes(tokenId),
'", "description": "ETH Time", "image": "data:image/svg+xml;base64,',
bytes(_tokenImage(topHue, bottomHue, hour, minute)),
'", "attributes": [{"trait_type": "top_color", "value": "hsl(', topHue, ',100%,89%)"},',
'{"trait_type": "bottom_color", "value": "hsl(', bottomHue, ',77%,36%)"},',
'{"trait_type": "time_offset", "value": "', offsetSign, bytes(Strings.toString(offsetUnsigned)), '"},',
'{"trait_type": "time", "value": "', bytes(Strings.toString(hour)), ':', bytes(Strings.toString(minute)), '"}]}'
)
)
)
)
);
}
/// @dev Generate a preview of the token that will be minted.
/// @param to the minter.
/// @param id the NFT unique id.
function tokenImagePreview(address to, uint256 id)
public
view
returns (string memory)
{
(uint256 hour, uint256 minute) = _adjustedHourMinutes(id);
bytes memory topHue = _computeHue(uint160(id >> 4), id);
bytes memory bottomHue = _computeHue(uint160(to), id);
return _tokenImage(topHue, bottomHue, hour, minute);
}
//////////////////////////////////////////////////////////////////////////
// //
// Private Functions //
// //
//////////////////////////////////////////////////////////////////////////
/// @dev Update the NFT history based on the transfer to the given account.
/// @param to the address that will receive the nft.
/// @param id the NFT unique id.
function _updateHistory(address to, uint256 id)
internal
{
// effects: xor existing value with address bytes content.
historyAccumulator[id] ^= uint160(to) << 2;
}
function _transferFrom(address from, address to, uint256 id)
internal
{
// checks: sender and destination
require(from == ownerOf[id], "WRONG_FROM");
require(to != address(0), "INVALID_RECIPIENT");
// checks: can transfer
require(
msg.sender == from || msg.sender == getApproved[id] || isApprovedForAll[from][msg.sender],
"NOT_AUTHORIZED"
);
// effects: update balance
// Underflow of the sender's balance is impossible because we check for
// ownership above and the recipient's balance can't realistically overflow.
unchecked {
balanceOf[from]--;
balanceOf[to]++;
}
// effects: update owership
ownerOf[id] = to;
// effects: reclaim storage
delete getApproved[id];
// effects: update history
_updateHistory(to, id);
emit Transfer(from, to, id);
}
bytes constant onColor = "FFF";
bytes constant offColor = "333";
/// @dev Generate the SVG image for the given NFT.
function _tokenImage(bytes memory topHue, bytes memory bottomHue, uint256 hour, uint256 minute)
internal
pure
returns (string memory)
{
return
Base64.encode(
bytes.concat(
'<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 1000 1000">',
'<linearGradient id="bg" gradientTransform="rotate(90)">',
'<stop offset="0%" stop-color="hsl(', topHue, ',100%,89%)"/>',
'<stop offset="100%" stop-color="hsl(', bottomHue, ',77%,36%)"/>',
'</linearGradient>',
'<rect x="0" y="0" width="1000" height="1000" fill="url(#bg)"/>',
_binaryHour(hour),
_binaryMinute(minute),
'</svg>'
)
);
}
function _binaryHour(uint256 hour)
internal
pure
returns (bytes memory)
{
if (hour > 24) {
revert EthTime__NumberOutOfRange();
}
bytes[7] memory colors = _binaryColor(hour);
return
bytes.concat(
'<circle cx="665" cy="875" r="25" fill="#', colors[0], '"/>',
'<circle cx="665" cy="805" r="25" fill="#', colors[1], '"/>',
// skip colors[2]
'<circle cx="735" cy="875" r="25" fill="#', colors[3], '"/>',
'<circle cx="735" cy="805" r="25" fill="#', colors[4], '"/>',
'<circle cx="735" cy="735" r="25" fill="#', colors[5], '"/>',
'<circle cx="735" cy="665" r="25" fill="#', colors[6], '"/>'
);
}
function _binaryMinute(uint256 minute)
internal
pure
returns (bytes memory)
{
if (minute > 59) {
revert EthTime__NumberOutOfRange();
}
bytes[7] memory colors = _binaryColor(minute);
return
bytes.concat(
'<circle cx="805" cy="875" r="25" fill="#', colors[0], '"/>',
'<circle cx="805" cy="805" r="25" fill="#', colors[1], '"/>',
'<circle cx="805" cy="735" r="25" fill="#', colors[2], '"/>',
'<circle cx="875" cy="875" r="25" fill="#', colors[3], '"/>',
'<circle cx="875" cy="805" r="25" fill="#', colors[4], '"/>',
'<circle cx="875" cy="735" r="25" fill="#', colors[5], '"/>',
'<circle cx="875" cy="665" r="25" fill="#', colors[6], '"/>'
);
}
/// @dev Returns the colors to be used to display the time.
/// The first 3 bytes are used for the first digit, the remaining 4 bytes
/// for the second digit.
function _binaryColor(uint256 n)
internal
pure
returns (bytes[7] memory)
{
unchecked {
uint256 firstDigit = n / 10;
uint256 secondDigit = n % 10;
return [
(firstDigit & 0x1 != 0) ? onColor : offColor,
(firstDigit & 0x2 != 0) ? onColor : offColor,
(firstDigit & 0x4 != 0) ? onColor : offColor,
(secondDigit & 0x1 != 0) ? onColor : offColor,
(secondDigit & 0x2 != 0) ? onColor : offColor,
(secondDigit & 0x4 != 0) ? onColor : offColor,
(secondDigit & 0x8 != 0) ? onColor : offColor
];
}
}
function _computeHue(uint160 n, uint256 id)
internal
pure
returns (bytes memory)
{
uint160 t = n ^ uint160(id);
uint160 acc = t % 360;
return bytes(Strings.toString(acc));
}
function _adjustedHourMinutes(uint256 id)
internal
view
returns (uint256 hour, uint256 minute)
{
int256 signedUserTimestamp = int256(block.timestamp) - 60 * timeOffsetMinutes[id];
uint256 userTimestamp;
// this won't realistically ever happen
if (signedUserTimestamp <= 0) {
userTimestamp = 0;
} else {
userTimestamp = uint256(signedUserTimestamp);
}
hour = BokkyPooBahsDateTimeLibrary.getHour(userTimestamp);
minute = BokkyPooBahsDateTimeLibrary.getMinute(userTimestamp);
}
} | /// @notice ETH-Time NFT contract. | NatSpecSingleLine | tokenURI | function tokenURI(uint256 id)
public
view
override
returns (string memory)
{
if (ownerOf[id] == address(0)) {
revert EthTime__DoesNotExist();
}
string memory tokenId = Strings.toString(id);
(uint256 hour, uint256 minute) = _adjustedHourMinutes(id);
bytes memory topHue = _computeHue(historyAccumulator[id], id);
bytes memory bottomHue = _computeHue(uint160(ownerOf[id]), id);
int128 offset = timeOffsetMinutes[id];
bytes memory offsetSign = offset >= 0 ? bytes('+') : bytes('-');
uint256 offsetUnsigned = offset >= 0 ? uint256(int256(offset)) : uint256(int256(-offset));
return
string(
bytes.concat(
'data:application/json;base64,',
bytes(
Base64.encode(
bytes.concat(
'{"name": "ETH Time #',
bytes(tokenId),
'", "description": "ETH Time", "image": "data:image/svg+xml;base64,',
bytes(_tokenImage(topHue, bottomHue, hour, minute)),
'", "attributes": [{"trait_type": "top_color", "value": "hsl(', topHue, ',100%,89%)"},',
'{"trait_type": "bottom_color", "value": "hsl(', bottomHue, ',77%,36%)"},',
'{"trait_type": "time_offset", "value": "', offsetSign, bytes(Strings.toString(offsetUnsigned)), '"},',
'{"trait_type": "time", "value": "', bytes(Strings.toString(hour)), ':', bytes(Strings.toString(minute)), '"}]}'
)
)
)
)
);
}
| //////////////////////////////////////////////////////////////////////////
/// @notice Returns the URI with the NFT metadata.
/// @dev Returns the base64 encoded metadata inline.
/// @param id the NFT unique id | NatSpecSingleLine | v0.8.10+commit.fc410830 | {
"func_code_index": [
10497,
12341
]
} | 8,659 |
||
EthTime | EthTime.sol | 0xe339d6f5a42e581dce5a479fca0ed02248a6dca4 | Solidity | EthTime | contract EthTime is ERC721, CharitySplitter, Ownable, ReentrancyGuard {
//////////////////////////////////////////////////////////////////////////
// //
// Constructor //
// //
//////////////////////////////////////////////////////////////////////////
constructor(address payable charity, uint256 charityFeeBp)
ERC721("ETH Time", "ETHT")
CharitySplitter(charity, charityFeeBp)
{
}
receive() external payable {}
//////////////////////////////////////////////////////////////////////////
// //
// Transfer with History //
// //
//////////////////////////////////////////////////////////////////////////
/// @notice The state of each NFT.
mapping(uint256 => uint160) public historyAccumulator;
function transferFrom(address from, address to, uint256 id)
public
nonReentrant
override
{
_transferFrom(from, to, id);
}
function safeTransferFrom(address from, address to, uint256 id)
public
nonReentrant
override
{
_transferFrom(from, to, id);
// interactions: check destination can handle ERC721
require(
to.code.length == 0 ||
ERC721TokenReceiver(to).onERC721Received(msg.sender, from, id, "") ==
ERC721TokenReceiver.onERC721Received.selector,
"UNSAFE_RECIPIENT"
);
}
function safeTransferFrom(address from, address to, uint256 id, bytes memory /* data */)
public
nonReentrant
override
{
_transferFrom(from, to, id);
// interactions: check destination can handle ERC721
require(
to.code.length == 0 ||
ERC721TokenReceiver(to).onERC721Received(msg.sender, from, id, "") ==
ERC721TokenReceiver.onERC721Received.selector,
"UNSAFE_RECIPIENT"
);
}
//////////////////////////////////////////////////////////////////////////
// //
// Charity Splitter //
// //
//////////////////////////////////////////////////////////////////////////
/// @notice Withdraw charity balance to charity address.
/// @dev Anyone can call this at any time.
function withdrawCharityBalance()
public
nonReentrant
{
_withdrawCharityBalance();
}
/// @notice Withdraw owner balance to the specified address.
/// @param destination the address that receives the owner balance.
function withdrawOwnerBalance(address payable destination)
public
onlyOwner
nonReentrant
{
_withdrawOwnerBalance(destination);
}
/// @notice Update the address that receives the charity fee.
/// @param charity the new charity address.
function updateCharity(address payable charity)
public
onlyOwner
nonReentrant
{
_updateCharity(charity);
}
//////////////////////////////////////////////////////////////////////////
// //
// Timezone Management //
// //
//////////////////////////////////////////////////////////////////////////
mapping(uint256 => int128) public timeOffsetMinutes;
event TimeOffsetUpdated(uint256 indexed id, int128 offsetMinutes);
/// @notice Sets the time offset of the given token id.
/// @dev Use minutes because some timezones (like IST) are offset by half an hour.
/// @param id the NFT unique id.
/// @param offsetMinutes the offset in minutes.
function setTimeOffsetMinutes(uint256 id, int128 offsetMinutes)
public
{
// checks: id exists
if (ownerOf[id] == address(0)) {
revert EthTime__DoesNotExist();
}
// checks: sender is owner.
if (ownerOf[id] != msg.sender) {
revert EthTime__NotOwner();
}
// checks: validate time offset
_validateTimeOffset(offsetMinutes);
// effects: update time offset
timeOffsetMinutes[id] = offsetMinutes;
emit TimeOffsetUpdated(id, offsetMinutes);
}
function _validateTimeOffset(int128 offsetMinutes)
internal
{
int128 offsetSeconds = offsetMinutes * 60;
// checks: offset is [-12, +14] hours UTC
if (offsetSeconds > 14 hours || offsetSeconds < -12 hours) {
revert EthTime__InvalidTimeOffset();
}
}
//////////////////////////////////////////////////////////////////////////
// //
// Minting //
// //
//////////////////////////////////////////////////////////////////////////
/// @dev The number of tokens minted.
uint256 public totalSupply;
/// @dev The maximum number of mintable tokens.
uint256 public constant maximumSupply = 100;
uint256 private constant TARGET_PRICE = 1 ether;
uint256 private constant PRICE_INCREMENT = TARGET_PRICE / maximumSupply * 2;
/// @notice Mint a new NFT, transfering ownership to the given account.
/// @dev If the token id already exists, this method fails.
/// @param to the NFT ower.
/// @param offsetMinutes the time offset in minutes.
/// @param id the NFT unique id.
function mint(address to, int128 offsetMinutes, uint256 id)
public
payable
nonReentrant
virtual
{
// interactions: mint.
uint256 valueLeft = _mint(to, offsetMinutes, id, msg.value);
// interactions: send back leftover value.
if (valueLeft > 0) {
(bool success, ) = msg.sender.call{value: valueLeft}("");
require(success);
}
}
/// @notice Mint new NFTs, transfering ownership to the given account.
/// @dev If any of the token ids already exists, this method fails.
/// @param to the NFT ower.
/// @param offsetMinutes the time offset in minutes.
/// @param ids the NFT unique ids.
function batchMint(address to, int128 offsetMinutes, uint256[] calldata ids)
public
payable
nonReentrant
virtual
{
uint256 count = ids.length;
// checks: can mint count nfts
_validateBatchMintCount(count);
uint256 valueLeft = msg.value;
for (uint256 i = 0; i < count; i++) {
// interactions: mint.
valueLeft = _mint(to, offsetMinutes, ids[i], valueLeft);
}
// interactions: send back leftover value.
if (valueLeft > 0) {
(bool success, ) = msg.sender.call{value: valueLeft}("");
require(success);
}
}
/// @notice Get the price for minting the next `count` NFT.
function getBatchMintPrice(uint256 count)
public
view
returns (uint256)
{
// checks: can mint count nfts
_validateBatchMintCount(count);
uint256 supply = totalSupply;
uint256 price = 0;
for (uint256 i = 0; i < count; i++) {
price += _priceAtSupplyLevel(supply + i);
}
return price;
}
/// @notice Get the price for minting the next NFT.
function getMintPrice()
public
view
returns (uint256)
{
return _priceAtSupplyLevel(totalSupply);
}
function _mint(address to, int128 offsetMinutes, uint256 id, uint256 value)
internal
returns (uint256 valueLeft)
{
uint256 price = _priceAtSupplyLevel(totalSupply);
// checks: value is enough to mint the nft.
if (value < price) {
revert EthTime__InvalidMintValue();
}
// checks: minting causes going over maximum supply.
if (totalSupply == maximumSupply) {
revert EthTime__CollectionMintClosed();
}
// checks: validate offset
_validateTimeOffset(offsetMinutes);
// effects: seed history with unique starting value.
historyAccumulator[id] = uint160(id >> 4);
// effects: increment total supply.
totalSupply += 1;
// effects: update charity split.
_updateBalance(value);
// effects: set time offset
timeOffsetMinutes[id] = offsetMinutes;
// interactions: safe mint
_safeMint(to, id);
// return value left to be sent back to user.
valueLeft = value - price;
}
function _priceAtSupplyLevel(uint256 supply)
internal
pure
returns (uint256)
{
uint256 price = supply * PRICE_INCREMENT;
if (supply > 50) {
price = TARGET_PRICE;
}
return price;
}
function _validateBatchMintCount(uint256 count)
internal
view
{
// checks: no more than 10.
if (count > 10) {
revert EthTime__InvalidMintAmount();
}
// checks: minting does not push over the limit.
// notice that it would fail anyway.
if (totalSupply + count > maximumSupply) {
revert EthTime__InvalidMintAmount();
}
}
//////////////////////////////////////////////////////////////////////////
// //
// Token URI //
// //
//////////////////////////////////////////////////////////////////////////
/// @notice Returns the URI with the NFT metadata.
/// @dev Returns the base64 encoded metadata inline.
/// @param id the NFT unique id
function tokenURI(uint256 id)
public
view
override
returns (string memory)
{
if (ownerOf[id] == address(0)) {
revert EthTime__DoesNotExist();
}
string memory tokenId = Strings.toString(id);
(uint256 hour, uint256 minute) = _adjustedHourMinutes(id);
bytes memory topHue = _computeHue(historyAccumulator[id], id);
bytes memory bottomHue = _computeHue(uint160(ownerOf[id]), id);
int128 offset = timeOffsetMinutes[id];
bytes memory offsetSign = offset >= 0 ? bytes('+') : bytes('-');
uint256 offsetUnsigned = offset >= 0 ? uint256(int256(offset)) : uint256(int256(-offset));
return
string(
bytes.concat(
'data:application/json;base64,',
bytes(
Base64.encode(
bytes.concat(
'{"name": "ETH Time #',
bytes(tokenId),
'", "description": "ETH Time", "image": "data:image/svg+xml;base64,',
bytes(_tokenImage(topHue, bottomHue, hour, minute)),
'", "attributes": [{"trait_type": "top_color", "value": "hsl(', topHue, ',100%,89%)"},',
'{"trait_type": "bottom_color", "value": "hsl(', bottomHue, ',77%,36%)"},',
'{"trait_type": "time_offset", "value": "', offsetSign, bytes(Strings.toString(offsetUnsigned)), '"},',
'{"trait_type": "time", "value": "', bytes(Strings.toString(hour)), ':', bytes(Strings.toString(minute)), '"}]}'
)
)
)
)
);
}
/// @dev Generate a preview of the token that will be minted.
/// @param to the minter.
/// @param id the NFT unique id.
function tokenImagePreview(address to, uint256 id)
public
view
returns (string memory)
{
(uint256 hour, uint256 minute) = _adjustedHourMinutes(id);
bytes memory topHue = _computeHue(uint160(id >> 4), id);
bytes memory bottomHue = _computeHue(uint160(to), id);
return _tokenImage(topHue, bottomHue, hour, minute);
}
//////////////////////////////////////////////////////////////////////////
// //
// Private Functions //
// //
//////////////////////////////////////////////////////////////////////////
/// @dev Update the NFT history based on the transfer to the given account.
/// @param to the address that will receive the nft.
/// @param id the NFT unique id.
function _updateHistory(address to, uint256 id)
internal
{
// effects: xor existing value with address bytes content.
historyAccumulator[id] ^= uint160(to) << 2;
}
function _transferFrom(address from, address to, uint256 id)
internal
{
// checks: sender and destination
require(from == ownerOf[id], "WRONG_FROM");
require(to != address(0), "INVALID_RECIPIENT");
// checks: can transfer
require(
msg.sender == from || msg.sender == getApproved[id] || isApprovedForAll[from][msg.sender],
"NOT_AUTHORIZED"
);
// effects: update balance
// Underflow of the sender's balance is impossible because we check for
// ownership above and the recipient's balance can't realistically overflow.
unchecked {
balanceOf[from]--;
balanceOf[to]++;
}
// effects: update owership
ownerOf[id] = to;
// effects: reclaim storage
delete getApproved[id];
// effects: update history
_updateHistory(to, id);
emit Transfer(from, to, id);
}
bytes constant onColor = "FFF";
bytes constant offColor = "333";
/// @dev Generate the SVG image for the given NFT.
function _tokenImage(bytes memory topHue, bytes memory bottomHue, uint256 hour, uint256 minute)
internal
pure
returns (string memory)
{
return
Base64.encode(
bytes.concat(
'<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 1000 1000">',
'<linearGradient id="bg" gradientTransform="rotate(90)">',
'<stop offset="0%" stop-color="hsl(', topHue, ',100%,89%)"/>',
'<stop offset="100%" stop-color="hsl(', bottomHue, ',77%,36%)"/>',
'</linearGradient>',
'<rect x="0" y="0" width="1000" height="1000" fill="url(#bg)"/>',
_binaryHour(hour),
_binaryMinute(minute),
'</svg>'
)
);
}
function _binaryHour(uint256 hour)
internal
pure
returns (bytes memory)
{
if (hour > 24) {
revert EthTime__NumberOutOfRange();
}
bytes[7] memory colors = _binaryColor(hour);
return
bytes.concat(
'<circle cx="665" cy="875" r="25" fill="#', colors[0], '"/>',
'<circle cx="665" cy="805" r="25" fill="#', colors[1], '"/>',
// skip colors[2]
'<circle cx="735" cy="875" r="25" fill="#', colors[3], '"/>',
'<circle cx="735" cy="805" r="25" fill="#', colors[4], '"/>',
'<circle cx="735" cy="735" r="25" fill="#', colors[5], '"/>',
'<circle cx="735" cy="665" r="25" fill="#', colors[6], '"/>'
);
}
function _binaryMinute(uint256 minute)
internal
pure
returns (bytes memory)
{
if (minute > 59) {
revert EthTime__NumberOutOfRange();
}
bytes[7] memory colors = _binaryColor(minute);
return
bytes.concat(
'<circle cx="805" cy="875" r="25" fill="#', colors[0], '"/>',
'<circle cx="805" cy="805" r="25" fill="#', colors[1], '"/>',
'<circle cx="805" cy="735" r="25" fill="#', colors[2], '"/>',
'<circle cx="875" cy="875" r="25" fill="#', colors[3], '"/>',
'<circle cx="875" cy="805" r="25" fill="#', colors[4], '"/>',
'<circle cx="875" cy="735" r="25" fill="#', colors[5], '"/>',
'<circle cx="875" cy="665" r="25" fill="#', colors[6], '"/>'
);
}
/// @dev Returns the colors to be used to display the time.
/// The first 3 bytes are used for the first digit, the remaining 4 bytes
/// for the second digit.
function _binaryColor(uint256 n)
internal
pure
returns (bytes[7] memory)
{
unchecked {
uint256 firstDigit = n / 10;
uint256 secondDigit = n % 10;
return [
(firstDigit & 0x1 != 0) ? onColor : offColor,
(firstDigit & 0x2 != 0) ? onColor : offColor,
(firstDigit & 0x4 != 0) ? onColor : offColor,
(secondDigit & 0x1 != 0) ? onColor : offColor,
(secondDigit & 0x2 != 0) ? onColor : offColor,
(secondDigit & 0x4 != 0) ? onColor : offColor,
(secondDigit & 0x8 != 0) ? onColor : offColor
];
}
}
function _computeHue(uint160 n, uint256 id)
internal
pure
returns (bytes memory)
{
uint160 t = n ^ uint160(id);
uint160 acc = t % 360;
return bytes(Strings.toString(acc));
}
function _adjustedHourMinutes(uint256 id)
internal
view
returns (uint256 hour, uint256 minute)
{
int256 signedUserTimestamp = int256(block.timestamp) - 60 * timeOffsetMinutes[id];
uint256 userTimestamp;
// this won't realistically ever happen
if (signedUserTimestamp <= 0) {
userTimestamp = 0;
} else {
userTimestamp = uint256(signedUserTimestamp);
}
hour = BokkyPooBahsDateTimeLibrary.getHour(userTimestamp);
minute = BokkyPooBahsDateTimeLibrary.getMinute(userTimestamp);
}
} | /// @notice ETH-Time NFT contract. | NatSpecSingleLine | tokenImagePreview | function tokenImagePreview(address to, uint256 id)
public
view
returns (string memory)
{
(uint256 hour, uint256 minute) = _adjustedHourMinutes(id);
bytes memory topHue = _computeHue(uint160(id >> 4), id);
bytes memory bottomHue = _computeHue(uint160(to), id);
return _tokenImage(topHue, bottomHue, hour, minute);
}
| /// @dev Generate a preview of the token that will be minted.
/// @param to the minter.
/// @param id the NFT unique id. | NatSpecSingleLine | v0.8.10+commit.fc410830 | {
"func_code_index": [
12476,
12860
]
} | 8,660 |
||
EthTime | EthTime.sol | 0xe339d6f5a42e581dce5a479fca0ed02248a6dca4 | Solidity | EthTime | contract EthTime is ERC721, CharitySplitter, Ownable, ReentrancyGuard {
//////////////////////////////////////////////////////////////////////////
// //
// Constructor //
// //
//////////////////////////////////////////////////////////////////////////
constructor(address payable charity, uint256 charityFeeBp)
ERC721("ETH Time", "ETHT")
CharitySplitter(charity, charityFeeBp)
{
}
receive() external payable {}
//////////////////////////////////////////////////////////////////////////
// //
// Transfer with History //
// //
//////////////////////////////////////////////////////////////////////////
/// @notice The state of each NFT.
mapping(uint256 => uint160) public historyAccumulator;
function transferFrom(address from, address to, uint256 id)
public
nonReentrant
override
{
_transferFrom(from, to, id);
}
function safeTransferFrom(address from, address to, uint256 id)
public
nonReentrant
override
{
_transferFrom(from, to, id);
// interactions: check destination can handle ERC721
require(
to.code.length == 0 ||
ERC721TokenReceiver(to).onERC721Received(msg.sender, from, id, "") ==
ERC721TokenReceiver.onERC721Received.selector,
"UNSAFE_RECIPIENT"
);
}
function safeTransferFrom(address from, address to, uint256 id, bytes memory /* data */)
public
nonReentrant
override
{
_transferFrom(from, to, id);
// interactions: check destination can handle ERC721
require(
to.code.length == 0 ||
ERC721TokenReceiver(to).onERC721Received(msg.sender, from, id, "") ==
ERC721TokenReceiver.onERC721Received.selector,
"UNSAFE_RECIPIENT"
);
}
//////////////////////////////////////////////////////////////////////////
// //
// Charity Splitter //
// //
//////////////////////////////////////////////////////////////////////////
/// @notice Withdraw charity balance to charity address.
/// @dev Anyone can call this at any time.
function withdrawCharityBalance()
public
nonReentrant
{
_withdrawCharityBalance();
}
/// @notice Withdraw owner balance to the specified address.
/// @param destination the address that receives the owner balance.
function withdrawOwnerBalance(address payable destination)
public
onlyOwner
nonReentrant
{
_withdrawOwnerBalance(destination);
}
/// @notice Update the address that receives the charity fee.
/// @param charity the new charity address.
function updateCharity(address payable charity)
public
onlyOwner
nonReentrant
{
_updateCharity(charity);
}
//////////////////////////////////////////////////////////////////////////
// //
// Timezone Management //
// //
//////////////////////////////////////////////////////////////////////////
mapping(uint256 => int128) public timeOffsetMinutes;
event TimeOffsetUpdated(uint256 indexed id, int128 offsetMinutes);
/// @notice Sets the time offset of the given token id.
/// @dev Use minutes because some timezones (like IST) are offset by half an hour.
/// @param id the NFT unique id.
/// @param offsetMinutes the offset in minutes.
function setTimeOffsetMinutes(uint256 id, int128 offsetMinutes)
public
{
// checks: id exists
if (ownerOf[id] == address(0)) {
revert EthTime__DoesNotExist();
}
// checks: sender is owner.
if (ownerOf[id] != msg.sender) {
revert EthTime__NotOwner();
}
// checks: validate time offset
_validateTimeOffset(offsetMinutes);
// effects: update time offset
timeOffsetMinutes[id] = offsetMinutes;
emit TimeOffsetUpdated(id, offsetMinutes);
}
function _validateTimeOffset(int128 offsetMinutes)
internal
{
int128 offsetSeconds = offsetMinutes * 60;
// checks: offset is [-12, +14] hours UTC
if (offsetSeconds > 14 hours || offsetSeconds < -12 hours) {
revert EthTime__InvalidTimeOffset();
}
}
//////////////////////////////////////////////////////////////////////////
// //
// Minting //
// //
//////////////////////////////////////////////////////////////////////////
/// @dev The number of tokens minted.
uint256 public totalSupply;
/// @dev The maximum number of mintable tokens.
uint256 public constant maximumSupply = 100;
uint256 private constant TARGET_PRICE = 1 ether;
uint256 private constant PRICE_INCREMENT = TARGET_PRICE / maximumSupply * 2;
/// @notice Mint a new NFT, transfering ownership to the given account.
/// @dev If the token id already exists, this method fails.
/// @param to the NFT ower.
/// @param offsetMinutes the time offset in minutes.
/// @param id the NFT unique id.
function mint(address to, int128 offsetMinutes, uint256 id)
public
payable
nonReentrant
virtual
{
// interactions: mint.
uint256 valueLeft = _mint(to, offsetMinutes, id, msg.value);
// interactions: send back leftover value.
if (valueLeft > 0) {
(bool success, ) = msg.sender.call{value: valueLeft}("");
require(success);
}
}
/// @notice Mint new NFTs, transfering ownership to the given account.
/// @dev If any of the token ids already exists, this method fails.
/// @param to the NFT ower.
/// @param offsetMinutes the time offset in minutes.
/// @param ids the NFT unique ids.
function batchMint(address to, int128 offsetMinutes, uint256[] calldata ids)
public
payable
nonReentrant
virtual
{
uint256 count = ids.length;
// checks: can mint count nfts
_validateBatchMintCount(count);
uint256 valueLeft = msg.value;
for (uint256 i = 0; i < count; i++) {
// interactions: mint.
valueLeft = _mint(to, offsetMinutes, ids[i], valueLeft);
}
// interactions: send back leftover value.
if (valueLeft > 0) {
(bool success, ) = msg.sender.call{value: valueLeft}("");
require(success);
}
}
/// @notice Get the price for minting the next `count` NFT.
function getBatchMintPrice(uint256 count)
public
view
returns (uint256)
{
// checks: can mint count nfts
_validateBatchMintCount(count);
uint256 supply = totalSupply;
uint256 price = 0;
for (uint256 i = 0; i < count; i++) {
price += _priceAtSupplyLevel(supply + i);
}
return price;
}
/// @notice Get the price for minting the next NFT.
function getMintPrice()
public
view
returns (uint256)
{
return _priceAtSupplyLevel(totalSupply);
}
function _mint(address to, int128 offsetMinutes, uint256 id, uint256 value)
internal
returns (uint256 valueLeft)
{
uint256 price = _priceAtSupplyLevel(totalSupply);
// checks: value is enough to mint the nft.
if (value < price) {
revert EthTime__InvalidMintValue();
}
// checks: minting causes going over maximum supply.
if (totalSupply == maximumSupply) {
revert EthTime__CollectionMintClosed();
}
// checks: validate offset
_validateTimeOffset(offsetMinutes);
// effects: seed history with unique starting value.
historyAccumulator[id] = uint160(id >> 4);
// effects: increment total supply.
totalSupply += 1;
// effects: update charity split.
_updateBalance(value);
// effects: set time offset
timeOffsetMinutes[id] = offsetMinutes;
// interactions: safe mint
_safeMint(to, id);
// return value left to be sent back to user.
valueLeft = value - price;
}
function _priceAtSupplyLevel(uint256 supply)
internal
pure
returns (uint256)
{
uint256 price = supply * PRICE_INCREMENT;
if (supply > 50) {
price = TARGET_PRICE;
}
return price;
}
function _validateBatchMintCount(uint256 count)
internal
view
{
// checks: no more than 10.
if (count > 10) {
revert EthTime__InvalidMintAmount();
}
// checks: minting does not push over the limit.
// notice that it would fail anyway.
if (totalSupply + count > maximumSupply) {
revert EthTime__InvalidMintAmount();
}
}
//////////////////////////////////////////////////////////////////////////
// //
// Token URI //
// //
//////////////////////////////////////////////////////////////////////////
/// @notice Returns the URI with the NFT metadata.
/// @dev Returns the base64 encoded metadata inline.
/// @param id the NFT unique id
function tokenURI(uint256 id)
public
view
override
returns (string memory)
{
if (ownerOf[id] == address(0)) {
revert EthTime__DoesNotExist();
}
string memory tokenId = Strings.toString(id);
(uint256 hour, uint256 minute) = _adjustedHourMinutes(id);
bytes memory topHue = _computeHue(historyAccumulator[id], id);
bytes memory bottomHue = _computeHue(uint160(ownerOf[id]), id);
int128 offset = timeOffsetMinutes[id];
bytes memory offsetSign = offset >= 0 ? bytes('+') : bytes('-');
uint256 offsetUnsigned = offset >= 0 ? uint256(int256(offset)) : uint256(int256(-offset));
return
string(
bytes.concat(
'data:application/json;base64,',
bytes(
Base64.encode(
bytes.concat(
'{"name": "ETH Time #',
bytes(tokenId),
'", "description": "ETH Time", "image": "data:image/svg+xml;base64,',
bytes(_tokenImage(topHue, bottomHue, hour, minute)),
'", "attributes": [{"trait_type": "top_color", "value": "hsl(', topHue, ',100%,89%)"},',
'{"trait_type": "bottom_color", "value": "hsl(', bottomHue, ',77%,36%)"},',
'{"trait_type": "time_offset", "value": "', offsetSign, bytes(Strings.toString(offsetUnsigned)), '"},',
'{"trait_type": "time", "value": "', bytes(Strings.toString(hour)), ':', bytes(Strings.toString(minute)), '"}]}'
)
)
)
)
);
}
/// @dev Generate a preview of the token that will be minted.
/// @param to the minter.
/// @param id the NFT unique id.
function tokenImagePreview(address to, uint256 id)
public
view
returns (string memory)
{
(uint256 hour, uint256 minute) = _adjustedHourMinutes(id);
bytes memory topHue = _computeHue(uint160(id >> 4), id);
bytes memory bottomHue = _computeHue(uint160(to), id);
return _tokenImage(topHue, bottomHue, hour, minute);
}
//////////////////////////////////////////////////////////////////////////
// //
// Private Functions //
// //
//////////////////////////////////////////////////////////////////////////
/// @dev Update the NFT history based on the transfer to the given account.
/// @param to the address that will receive the nft.
/// @param id the NFT unique id.
function _updateHistory(address to, uint256 id)
internal
{
// effects: xor existing value with address bytes content.
historyAccumulator[id] ^= uint160(to) << 2;
}
function _transferFrom(address from, address to, uint256 id)
internal
{
// checks: sender and destination
require(from == ownerOf[id], "WRONG_FROM");
require(to != address(0), "INVALID_RECIPIENT");
// checks: can transfer
require(
msg.sender == from || msg.sender == getApproved[id] || isApprovedForAll[from][msg.sender],
"NOT_AUTHORIZED"
);
// effects: update balance
// Underflow of the sender's balance is impossible because we check for
// ownership above and the recipient's balance can't realistically overflow.
unchecked {
balanceOf[from]--;
balanceOf[to]++;
}
// effects: update owership
ownerOf[id] = to;
// effects: reclaim storage
delete getApproved[id];
// effects: update history
_updateHistory(to, id);
emit Transfer(from, to, id);
}
bytes constant onColor = "FFF";
bytes constant offColor = "333";
/// @dev Generate the SVG image for the given NFT.
function _tokenImage(bytes memory topHue, bytes memory bottomHue, uint256 hour, uint256 minute)
internal
pure
returns (string memory)
{
return
Base64.encode(
bytes.concat(
'<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 1000 1000">',
'<linearGradient id="bg" gradientTransform="rotate(90)">',
'<stop offset="0%" stop-color="hsl(', topHue, ',100%,89%)"/>',
'<stop offset="100%" stop-color="hsl(', bottomHue, ',77%,36%)"/>',
'</linearGradient>',
'<rect x="0" y="0" width="1000" height="1000" fill="url(#bg)"/>',
_binaryHour(hour),
_binaryMinute(minute),
'</svg>'
)
);
}
function _binaryHour(uint256 hour)
internal
pure
returns (bytes memory)
{
if (hour > 24) {
revert EthTime__NumberOutOfRange();
}
bytes[7] memory colors = _binaryColor(hour);
return
bytes.concat(
'<circle cx="665" cy="875" r="25" fill="#', colors[0], '"/>',
'<circle cx="665" cy="805" r="25" fill="#', colors[1], '"/>',
// skip colors[2]
'<circle cx="735" cy="875" r="25" fill="#', colors[3], '"/>',
'<circle cx="735" cy="805" r="25" fill="#', colors[4], '"/>',
'<circle cx="735" cy="735" r="25" fill="#', colors[5], '"/>',
'<circle cx="735" cy="665" r="25" fill="#', colors[6], '"/>'
);
}
function _binaryMinute(uint256 minute)
internal
pure
returns (bytes memory)
{
if (minute > 59) {
revert EthTime__NumberOutOfRange();
}
bytes[7] memory colors = _binaryColor(minute);
return
bytes.concat(
'<circle cx="805" cy="875" r="25" fill="#', colors[0], '"/>',
'<circle cx="805" cy="805" r="25" fill="#', colors[1], '"/>',
'<circle cx="805" cy="735" r="25" fill="#', colors[2], '"/>',
'<circle cx="875" cy="875" r="25" fill="#', colors[3], '"/>',
'<circle cx="875" cy="805" r="25" fill="#', colors[4], '"/>',
'<circle cx="875" cy="735" r="25" fill="#', colors[5], '"/>',
'<circle cx="875" cy="665" r="25" fill="#', colors[6], '"/>'
);
}
/// @dev Returns the colors to be used to display the time.
/// The first 3 bytes are used for the first digit, the remaining 4 bytes
/// for the second digit.
function _binaryColor(uint256 n)
internal
pure
returns (bytes[7] memory)
{
unchecked {
uint256 firstDigit = n / 10;
uint256 secondDigit = n % 10;
return [
(firstDigit & 0x1 != 0) ? onColor : offColor,
(firstDigit & 0x2 != 0) ? onColor : offColor,
(firstDigit & 0x4 != 0) ? onColor : offColor,
(secondDigit & 0x1 != 0) ? onColor : offColor,
(secondDigit & 0x2 != 0) ? onColor : offColor,
(secondDigit & 0x4 != 0) ? onColor : offColor,
(secondDigit & 0x8 != 0) ? onColor : offColor
];
}
}
function _computeHue(uint160 n, uint256 id)
internal
pure
returns (bytes memory)
{
uint160 t = n ^ uint160(id);
uint160 acc = t % 360;
return bytes(Strings.toString(acc));
}
function _adjustedHourMinutes(uint256 id)
internal
view
returns (uint256 hour, uint256 minute)
{
int256 signedUserTimestamp = int256(block.timestamp) - 60 * timeOffsetMinutes[id];
uint256 userTimestamp;
// this won't realistically ever happen
if (signedUserTimestamp <= 0) {
userTimestamp = 0;
} else {
userTimestamp = uint256(signedUserTimestamp);
}
hour = BokkyPooBahsDateTimeLibrary.getHour(userTimestamp);
minute = BokkyPooBahsDateTimeLibrary.getMinute(userTimestamp);
}
} | /// @notice ETH-Time NFT contract. | NatSpecSingleLine | _updateHistory | function _updateHistory(address to, uint256 id)
internal
{
// effects: xor existing value with address bytes content.
historyAccumulator[id] ^= uint160(to) << 2;
}
| //////////////////////////////////////////////////////////////////////////
/// @dev Update the NFT history based on the transfer to the given account.
/// @param to the address that will receive the nft.
/// @param id the NFT unique id. | NatSpecSingleLine | v0.8.10+commit.fc410830 | {
"func_code_index": [
13432,
13631
]
} | 8,661 |
||
EthTime | EthTime.sol | 0xe339d6f5a42e581dce5a479fca0ed02248a6dca4 | Solidity | EthTime | contract EthTime is ERC721, CharitySplitter, Ownable, ReentrancyGuard {
//////////////////////////////////////////////////////////////////////////
// //
// Constructor //
// //
//////////////////////////////////////////////////////////////////////////
constructor(address payable charity, uint256 charityFeeBp)
ERC721("ETH Time", "ETHT")
CharitySplitter(charity, charityFeeBp)
{
}
receive() external payable {}
//////////////////////////////////////////////////////////////////////////
// //
// Transfer with History //
// //
//////////////////////////////////////////////////////////////////////////
/// @notice The state of each NFT.
mapping(uint256 => uint160) public historyAccumulator;
function transferFrom(address from, address to, uint256 id)
public
nonReentrant
override
{
_transferFrom(from, to, id);
}
function safeTransferFrom(address from, address to, uint256 id)
public
nonReentrant
override
{
_transferFrom(from, to, id);
// interactions: check destination can handle ERC721
require(
to.code.length == 0 ||
ERC721TokenReceiver(to).onERC721Received(msg.sender, from, id, "") ==
ERC721TokenReceiver.onERC721Received.selector,
"UNSAFE_RECIPIENT"
);
}
function safeTransferFrom(address from, address to, uint256 id, bytes memory /* data */)
public
nonReentrant
override
{
_transferFrom(from, to, id);
// interactions: check destination can handle ERC721
require(
to.code.length == 0 ||
ERC721TokenReceiver(to).onERC721Received(msg.sender, from, id, "") ==
ERC721TokenReceiver.onERC721Received.selector,
"UNSAFE_RECIPIENT"
);
}
//////////////////////////////////////////////////////////////////////////
// //
// Charity Splitter //
// //
//////////////////////////////////////////////////////////////////////////
/// @notice Withdraw charity balance to charity address.
/// @dev Anyone can call this at any time.
function withdrawCharityBalance()
public
nonReentrant
{
_withdrawCharityBalance();
}
/// @notice Withdraw owner balance to the specified address.
/// @param destination the address that receives the owner balance.
function withdrawOwnerBalance(address payable destination)
public
onlyOwner
nonReentrant
{
_withdrawOwnerBalance(destination);
}
/// @notice Update the address that receives the charity fee.
/// @param charity the new charity address.
function updateCharity(address payable charity)
public
onlyOwner
nonReentrant
{
_updateCharity(charity);
}
//////////////////////////////////////////////////////////////////////////
// //
// Timezone Management //
// //
//////////////////////////////////////////////////////////////////////////
mapping(uint256 => int128) public timeOffsetMinutes;
event TimeOffsetUpdated(uint256 indexed id, int128 offsetMinutes);
/// @notice Sets the time offset of the given token id.
/// @dev Use minutes because some timezones (like IST) are offset by half an hour.
/// @param id the NFT unique id.
/// @param offsetMinutes the offset in minutes.
function setTimeOffsetMinutes(uint256 id, int128 offsetMinutes)
public
{
// checks: id exists
if (ownerOf[id] == address(0)) {
revert EthTime__DoesNotExist();
}
// checks: sender is owner.
if (ownerOf[id] != msg.sender) {
revert EthTime__NotOwner();
}
// checks: validate time offset
_validateTimeOffset(offsetMinutes);
// effects: update time offset
timeOffsetMinutes[id] = offsetMinutes;
emit TimeOffsetUpdated(id, offsetMinutes);
}
function _validateTimeOffset(int128 offsetMinutes)
internal
{
int128 offsetSeconds = offsetMinutes * 60;
// checks: offset is [-12, +14] hours UTC
if (offsetSeconds > 14 hours || offsetSeconds < -12 hours) {
revert EthTime__InvalidTimeOffset();
}
}
//////////////////////////////////////////////////////////////////////////
// //
// Minting //
// //
//////////////////////////////////////////////////////////////////////////
/// @dev The number of tokens minted.
uint256 public totalSupply;
/// @dev The maximum number of mintable tokens.
uint256 public constant maximumSupply = 100;
uint256 private constant TARGET_PRICE = 1 ether;
uint256 private constant PRICE_INCREMENT = TARGET_PRICE / maximumSupply * 2;
/// @notice Mint a new NFT, transfering ownership to the given account.
/// @dev If the token id already exists, this method fails.
/// @param to the NFT ower.
/// @param offsetMinutes the time offset in minutes.
/// @param id the NFT unique id.
function mint(address to, int128 offsetMinutes, uint256 id)
public
payable
nonReentrant
virtual
{
// interactions: mint.
uint256 valueLeft = _mint(to, offsetMinutes, id, msg.value);
// interactions: send back leftover value.
if (valueLeft > 0) {
(bool success, ) = msg.sender.call{value: valueLeft}("");
require(success);
}
}
/// @notice Mint new NFTs, transfering ownership to the given account.
/// @dev If any of the token ids already exists, this method fails.
/// @param to the NFT ower.
/// @param offsetMinutes the time offset in minutes.
/// @param ids the NFT unique ids.
function batchMint(address to, int128 offsetMinutes, uint256[] calldata ids)
public
payable
nonReentrant
virtual
{
uint256 count = ids.length;
// checks: can mint count nfts
_validateBatchMintCount(count);
uint256 valueLeft = msg.value;
for (uint256 i = 0; i < count; i++) {
// interactions: mint.
valueLeft = _mint(to, offsetMinutes, ids[i], valueLeft);
}
// interactions: send back leftover value.
if (valueLeft > 0) {
(bool success, ) = msg.sender.call{value: valueLeft}("");
require(success);
}
}
/// @notice Get the price for minting the next `count` NFT.
function getBatchMintPrice(uint256 count)
public
view
returns (uint256)
{
// checks: can mint count nfts
_validateBatchMintCount(count);
uint256 supply = totalSupply;
uint256 price = 0;
for (uint256 i = 0; i < count; i++) {
price += _priceAtSupplyLevel(supply + i);
}
return price;
}
/// @notice Get the price for minting the next NFT.
function getMintPrice()
public
view
returns (uint256)
{
return _priceAtSupplyLevel(totalSupply);
}
function _mint(address to, int128 offsetMinutes, uint256 id, uint256 value)
internal
returns (uint256 valueLeft)
{
uint256 price = _priceAtSupplyLevel(totalSupply);
// checks: value is enough to mint the nft.
if (value < price) {
revert EthTime__InvalidMintValue();
}
// checks: minting causes going over maximum supply.
if (totalSupply == maximumSupply) {
revert EthTime__CollectionMintClosed();
}
// checks: validate offset
_validateTimeOffset(offsetMinutes);
// effects: seed history with unique starting value.
historyAccumulator[id] = uint160(id >> 4);
// effects: increment total supply.
totalSupply += 1;
// effects: update charity split.
_updateBalance(value);
// effects: set time offset
timeOffsetMinutes[id] = offsetMinutes;
// interactions: safe mint
_safeMint(to, id);
// return value left to be sent back to user.
valueLeft = value - price;
}
function _priceAtSupplyLevel(uint256 supply)
internal
pure
returns (uint256)
{
uint256 price = supply * PRICE_INCREMENT;
if (supply > 50) {
price = TARGET_PRICE;
}
return price;
}
function _validateBatchMintCount(uint256 count)
internal
view
{
// checks: no more than 10.
if (count > 10) {
revert EthTime__InvalidMintAmount();
}
// checks: minting does not push over the limit.
// notice that it would fail anyway.
if (totalSupply + count > maximumSupply) {
revert EthTime__InvalidMintAmount();
}
}
//////////////////////////////////////////////////////////////////////////
// //
// Token URI //
// //
//////////////////////////////////////////////////////////////////////////
/// @notice Returns the URI with the NFT metadata.
/// @dev Returns the base64 encoded metadata inline.
/// @param id the NFT unique id
function tokenURI(uint256 id)
public
view
override
returns (string memory)
{
if (ownerOf[id] == address(0)) {
revert EthTime__DoesNotExist();
}
string memory tokenId = Strings.toString(id);
(uint256 hour, uint256 minute) = _adjustedHourMinutes(id);
bytes memory topHue = _computeHue(historyAccumulator[id], id);
bytes memory bottomHue = _computeHue(uint160(ownerOf[id]), id);
int128 offset = timeOffsetMinutes[id];
bytes memory offsetSign = offset >= 0 ? bytes('+') : bytes('-');
uint256 offsetUnsigned = offset >= 0 ? uint256(int256(offset)) : uint256(int256(-offset));
return
string(
bytes.concat(
'data:application/json;base64,',
bytes(
Base64.encode(
bytes.concat(
'{"name": "ETH Time #',
bytes(tokenId),
'", "description": "ETH Time", "image": "data:image/svg+xml;base64,',
bytes(_tokenImage(topHue, bottomHue, hour, minute)),
'", "attributes": [{"trait_type": "top_color", "value": "hsl(', topHue, ',100%,89%)"},',
'{"trait_type": "bottom_color", "value": "hsl(', bottomHue, ',77%,36%)"},',
'{"trait_type": "time_offset", "value": "', offsetSign, bytes(Strings.toString(offsetUnsigned)), '"},',
'{"trait_type": "time", "value": "', bytes(Strings.toString(hour)), ':', bytes(Strings.toString(minute)), '"}]}'
)
)
)
)
);
}
/// @dev Generate a preview of the token that will be minted.
/// @param to the minter.
/// @param id the NFT unique id.
function tokenImagePreview(address to, uint256 id)
public
view
returns (string memory)
{
(uint256 hour, uint256 minute) = _adjustedHourMinutes(id);
bytes memory topHue = _computeHue(uint160(id >> 4), id);
bytes memory bottomHue = _computeHue(uint160(to), id);
return _tokenImage(topHue, bottomHue, hour, minute);
}
//////////////////////////////////////////////////////////////////////////
// //
// Private Functions //
// //
//////////////////////////////////////////////////////////////////////////
/// @dev Update the NFT history based on the transfer to the given account.
/// @param to the address that will receive the nft.
/// @param id the NFT unique id.
function _updateHistory(address to, uint256 id)
internal
{
// effects: xor existing value with address bytes content.
historyAccumulator[id] ^= uint160(to) << 2;
}
function _transferFrom(address from, address to, uint256 id)
internal
{
// checks: sender and destination
require(from == ownerOf[id], "WRONG_FROM");
require(to != address(0), "INVALID_RECIPIENT");
// checks: can transfer
require(
msg.sender == from || msg.sender == getApproved[id] || isApprovedForAll[from][msg.sender],
"NOT_AUTHORIZED"
);
// effects: update balance
// Underflow of the sender's balance is impossible because we check for
// ownership above and the recipient's balance can't realistically overflow.
unchecked {
balanceOf[from]--;
balanceOf[to]++;
}
// effects: update owership
ownerOf[id] = to;
// effects: reclaim storage
delete getApproved[id];
// effects: update history
_updateHistory(to, id);
emit Transfer(from, to, id);
}
bytes constant onColor = "FFF";
bytes constant offColor = "333";
/// @dev Generate the SVG image for the given NFT.
function _tokenImage(bytes memory topHue, bytes memory bottomHue, uint256 hour, uint256 minute)
internal
pure
returns (string memory)
{
return
Base64.encode(
bytes.concat(
'<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 1000 1000">',
'<linearGradient id="bg" gradientTransform="rotate(90)">',
'<stop offset="0%" stop-color="hsl(', topHue, ',100%,89%)"/>',
'<stop offset="100%" stop-color="hsl(', bottomHue, ',77%,36%)"/>',
'</linearGradient>',
'<rect x="0" y="0" width="1000" height="1000" fill="url(#bg)"/>',
_binaryHour(hour),
_binaryMinute(minute),
'</svg>'
)
);
}
function _binaryHour(uint256 hour)
internal
pure
returns (bytes memory)
{
if (hour > 24) {
revert EthTime__NumberOutOfRange();
}
bytes[7] memory colors = _binaryColor(hour);
return
bytes.concat(
'<circle cx="665" cy="875" r="25" fill="#', colors[0], '"/>',
'<circle cx="665" cy="805" r="25" fill="#', colors[1], '"/>',
// skip colors[2]
'<circle cx="735" cy="875" r="25" fill="#', colors[3], '"/>',
'<circle cx="735" cy="805" r="25" fill="#', colors[4], '"/>',
'<circle cx="735" cy="735" r="25" fill="#', colors[5], '"/>',
'<circle cx="735" cy="665" r="25" fill="#', colors[6], '"/>'
);
}
function _binaryMinute(uint256 minute)
internal
pure
returns (bytes memory)
{
if (minute > 59) {
revert EthTime__NumberOutOfRange();
}
bytes[7] memory colors = _binaryColor(minute);
return
bytes.concat(
'<circle cx="805" cy="875" r="25" fill="#', colors[0], '"/>',
'<circle cx="805" cy="805" r="25" fill="#', colors[1], '"/>',
'<circle cx="805" cy="735" r="25" fill="#', colors[2], '"/>',
'<circle cx="875" cy="875" r="25" fill="#', colors[3], '"/>',
'<circle cx="875" cy="805" r="25" fill="#', colors[4], '"/>',
'<circle cx="875" cy="735" r="25" fill="#', colors[5], '"/>',
'<circle cx="875" cy="665" r="25" fill="#', colors[6], '"/>'
);
}
/// @dev Returns the colors to be used to display the time.
/// The first 3 bytes are used for the first digit, the remaining 4 bytes
/// for the second digit.
function _binaryColor(uint256 n)
internal
pure
returns (bytes[7] memory)
{
unchecked {
uint256 firstDigit = n / 10;
uint256 secondDigit = n % 10;
return [
(firstDigit & 0x1 != 0) ? onColor : offColor,
(firstDigit & 0x2 != 0) ? onColor : offColor,
(firstDigit & 0x4 != 0) ? onColor : offColor,
(secondDigit & 0x1 != 0) ? onColor : offColor,
(secondDigit & 0x2 != 0) ? onColor : offColor,
(secondDigit & 0x4 != 0) ? onColor : offColor,
(secondDigit & 0x8 != 0) ? onColor : offColor
];
}
}
function _computeHue(uint160 n, uint256 id)
internal
pure
returns (bytes memory)
{
uint160 t = n ^ uint160(id);
uint160 acc = t % 360;
return bytes(Strings.toString(acc));
}
function _adjustedHourMinutes(uint256 id)
internal
view
returns (uint256 hour, uint256 minute)
{
int256 signedUserTimestamp = int256(block.timestamp) - 60 * timeOffsetMinutes[id];
uint256 userTimestamp;
// this won't realistically ever happen
if (signedUserTimestamp <= 0) {
userTimestamp = 0;
} else {
userTimestamp = uint256(signedUserTimestamp);
}
hour = BokkyPooBahsDateTimeLibrary.getHour(userTimestamp);
minute = BokkyPooBahsDateTimeLibrary.getMinute(userTimestamp);
}
} | /// @notice ETH-Time NFT contract. | NatSpecSingleLine | _tokenImage | function _tokenImage(bytes memory topHue, bytes memory bottomHue, uint256 hour, uint256 minute)
internal
pure
returns (string memory)
{
return
Base64.encode(
bytes.concat(
'<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 1000 1000">',
'<linearGradient id="bg" gradientTransform="rotate(90)">',
'<stop offset="0%" stop-color="hsl(', topHue, ',100%,89%)"/>',
'<stop offset="100%" stop-color="hsl(', bottomHue, ',77%,36%)"/>',
'</linearGradient>',
'<rect x="0" y="0" width="1000" height="1000" fill="url(#bg)"/>',
_binaryHour(hour),
_binaryMinute(minute),
'</svg>'
)
);
}
| /// @dev Generate the SVG image for the given NFT. | NatSpecSingleLine | v0.8.10+commit.fc410830 | {
"func_code_index": [
14729,
15583
]
} | 8,662 |
||
EthTime | EthTime.sol | 0xe339d6f5a42e581dce5a479fca0ed02248a6dca4 | Solidity | EthTime | contract EthTime is ERC721, CharitySplitter, Ownable, ReentrancyGuard {
//////////////////////////////////////////////////////////////////////////
// //
// Constructor //
// //
//////////////////////////////////////////////////////////////////////////
constructor(address payable charity, uint256 charityFeeBp)
ERC721("ETH Time", "ETHT")
CharitySplitter(charity, charityFeeBp)
{
}
receive() external payable {}
//////////////////////////////////////////////////////////////////////////
// //
// Transfer with History //
// //
//////////////////////////////////////////////////////////////////////////
/// @notice The state of each NFT.
mapping(uint256 => uint160) public historyAccumulator;
function transferFrom(address from, address to, uint256 id)
public
nonReentrant
override
{
_transferFrom(from, to, id);
}
function safeTransferFrom(address from, address to, uint256 id)
public
nonReentrant
override
{
_transferFrom(from, to, id);
// interactions: check destination can handle ERC721
require(
to.code.length == 0 ||
ERC721TokenReceiver(to).onERC721Received(msg.sender, from, id, "") ==
ERC721TokenReceiver.onERC721Received.selector,
"UNSAFE_RECIPIENT"
);
}
function safeTransferFrom(address from, address to, uint256 id, bytes memory /* data */)
public
nonReentrant
override
{
_transferFrom(from, to, id);
// interactions: check destination can handle ERC721
require(
to.code.length == 0 ||
ERC721TokenReceiver(to).onERC721Received(msg.sender, from, id, "") ==
ERC721TokenReceiver.onERC721Received.selector,
"UNSAFE_RECIPIENT"
);
}
//////////////////////////////////////////////////////////////////////////
// //
// Charity Splitter //
// //
//////////////////////////////////////////////////////////////////////////
/// @notice Withdraw charity balance to charity address.
/// @dev Anyone can call this at any time.
function withdrawCharityBalance()
public
nonReentrant
{
_withdrawCharityBalance();
}
/// @notice Withdraw owner balance to the specified address.
/// @param destination the address that receives the owner balance.
function withdrawOwnerBalance(address payable destination)
public
onlyOwner
nonReentrant
{
_withdrawOwnerBalance(destination);
}
/// @notice Update the address that receives the charity fee.
/// @param charity the new charity address.
function updateCharity(address payable charity)
public
onlyOwner
nonReentrant
{
_updateCharity(charity);
}
//////////////////////////////////////////////////////////////////////////
// //
// Timezone Management //
// //
//////////////////////////////////////////////////////////////////////////
mapping(uint256 => int128) public timeOffsetMinutes;
event TimeOffsetUpdated(uint256 indexed id, int128 offsetMinutes);
/// @notice Sets the time offset of the given token id.
/// @dev Use minutes because some timezones (like IST) are offset by half an hour.
/// @param id the NFT unique id.
/// @param offsetMinutes the offset in minutes.
function setTimeOffsetMinutes(uint256 id, int128 offsetMinutes)
public
{
// checks: id exists
if (ownerOf[id] == address(0)) {
revert EthTime__DoesNotExist();
}
// checks: sender is owner.
if (ownerOf[id] != msg.sender) {
revert EthTime__NotOwner();
}
// checks: validate time offset
_validateTimeOffset(offsetMinutes);
// effects: update time offset
timeOffsetMinutes[id] = offsetMinutes;
emit TimeOffsetUpdated(id, offsetMinutes);
}
function _validateTimeOffset(int128 offsetMinutes)
internal
{
int128 offsetSeconds = offsetMinutes * 60;
// checks: offset is [-12, +14] hours UTC
if (offsetSeconds > 14 hours || offsetSeconds < -12 hours) {
revert EthTime__InvalidTimeOffset();
}
}
//////////////////////////////////////////////////////////////////////////
// //
// Minting //
// //
//////////////////////////////////////////////////////////////////////////
/// @dev The number of tokens minted.
uint256 public totalSupply;
/// @dev The maximum number of mintable tokens.
uint256 public constant maximumSupply = 100;
uint256 private constant TARGET_PRICE = 1 ether;
uint256 private constant PRICE_INCREMENT = TARGET_PRICE / maximumSupply * 2;
/// @notice Mint a new NFT, transfering ownership to the given account.
/// @dev If the token id already exists, this method fails.
/// @param to the NFT ower.
/// @param offsetMinutes the time offset in minutes.
/// @param id the NFT unique id.
function mint(address to, int128 offsetMinutes, uint256 id)
public
payable
nonReentrant
virtual
{
// interactions: mint.
uint256 valueLeft = _mint(to, offsetMinutes, id, msg.value);
// interactions: send back leftover value.
if (valueLeft > 0) {
(bool success, ) = msg.sender.call{value: valueLeft}("");
require(success);
}
}
/// @notice Mint new NFTs, transfering ownership to the given account.
/// @dev If any of the token ids already exists, this method fails.
/// @param to the NFT ower.
/// @param offsetMinutes the time offset in minutes.
/// @param ids the NFT unique ids.
function batchMint(address to, int128 offsetMinutes, uint256[] calldata ids)
public
payable
nonReentrant
virtual
{
uint256 count = ids.length;
// checks: can mint count nfts
_validateBatchMintCount(count);
uint256 valueLeft = msg.value;
for (uint256 i = 0; i < count; i++) {
// interactions: mint.
valueLeft = _mint(to, offsetMinutes, ids[i], valueLeft);
}
// interactions: send back leftover value.
if (valueLeft > 0) {
(bool success, ) = msg.sender.call{value: valueLeft}("");
require(success);
}
}
/// @notice Get the price for minting the next `count` NFT.
function getBatchMintPrice(uint256 count)
public
view
returns (uint256)
{
// checks: can mint count nfts
_validateBatchMintCount(count);
uint256 supply = totalSupply;
uint256 price = 0;
for (uint256 i = 0; i < count; i++) {
price += _priceAtSupplyLevel(supply + i);
}
return price;
}
/// @notice Get the price for minting the next NFT.
function getMintPrice()
public
view
returns (uint256)
{
return _priceAtSupplyLevel(totalSupply);
}
function _mint(address to, int128 offsetMinutes, uint256 id, uint256 value)
internal
returns (uint256 valueLeft)
{
uint256 price = _priceAtSupplyLevel(totalSupply);
// checks: value is enough to mint the nft.
if (value < price) {
revert EthTime__InvalidMintValue();
}
// checks: minting causes going over maximum supply.
if (totalSupply == maximumSupply) {
revert EthTime__CollectionMintClosed();
}
// checks: validate offset
_validateTimeOffset(offsetMinutes);
// effects: seed history with unique starting value.
historyAccumulator[id] = uint160(id >> 4);
// effects: increment total supply.
totalSupply += 1;
// effects: update charity split.
_updateBalance(value);
// effects: set time offset
timeOffsetMinutes[id] = offsetMinutes;
// interactions: safe mint
_safeMint(to, id);
// return value left to be sent back to user.
valueLeft = value - price;
}
function _priceAtSupplyLevel(uint256 supply)
internal
pure
returns (uint256)
{
uint256 price = supply * PRICE_INCREMENT;
if (supply > 50) {
price = TARGET_PRICE;
}
return price;
}
function _validateBatchMintCount(uint256 count)
internal
view
{
// checks: no more than 10.
if (count > 10) {
revert EthTime__InvalidMintAmount();
}
// checks: minting does not push over the limit.
// notice that it would fail anyway.
if (totalSupply + count > maximumSupply) {
revert EthTime__InvalidMintAmount();
}
}
//////////////////////////////////////////////////////////////////////////
// //
// Token URI //
// //
//////////////////////////////////////////////////////////////////////////
/// @notice Returns the URI with the NFT metadata.
/// @dev Returns the base64 encoded metadata inline.
/// @param id the NFT unique id
function tokenURI(uint256 id)
public
view
override
returns (string memory)
{
if (ownerOf[id] == address(0)) {
revert EthTime__DoesNotExist();
}
string memory tokenId = Strings.toString(id);
(uint256 hour, uint256 minute) = _adjustedHourMinutes(id);
bytes memory topHue = _computeHue(historyAccumulator[id], id);
bytes memory bottomHue = _computeHue(uint160(ownerOf[id]), id);
int128 offset = timeOffsetMinutes[id];
bytes memory offsetSign = offset >= 0 ? bytes('+') : bytes('-');
uint256 offsetUnsigned = offset >= 0 ? uint256(int256(offset)) : uint256(int256(-offset));
return
string(
bytes.concat(
'data:application/json;base64,',
bytes(
Base64.encode(
bytes.concat(
'{"name": "ETH Time #',
bytes(tokenId),
'", "description": "ETH Time", "image": "data:image/svg+xml;base64,',
bytes(_tokenImage(topHue, bottomHue, hour, minute)),
'", "attributes": [{"trait_type": "top_color", "value": "hsl(', topHue, ',100%,89%)"},',
'{"trait_type": "bottom_color", "value": "hsl(', bottomHue, ',77%,36%)"},',
'{"trait_type": "time_offset", "value": "', offsetSign, bytes(Strings.toString(offsetUnsigned)), '"},',
'{"trait_type": "time", "value": "', bytes(Strings.toString(hour)), ':', bytes(Strings.toString(minute)), '"}]}'
)
)
)
)
);
}
/// @dev Generate a preview of the token that will be minted.
/// @param to the minter.
/// @param id the NFT unique id.
function tokenImagePreview(address to, uint256 id)
public
view
returns (string memory)
{
(uint256 hour, uint256 minute) = _adjustedHourMinutes(id);
bytes memory topHue = _computeHue(uint160(id >> 4), id);
bytes memory bottomHue = _computeHue(uint160(to), id);
return _tokenImage(topHue, bottomHue, hour, minute);
}
//////////////////////////////////////////////////////////////////////////
// //
// Private Functions //
// //
//////////////////////////////////////////////////////////////////////////
/// @dev Update the NFT history based on the transfer to the given account.
/// @param to the address that will receive the nft.
/// @param id the NFT unique id.
function _updateHistory(address to, uint256 id)
internal
{
// effects: xor existing value with address bytes content.
historyAccumulator[id] ^= uint160(to) << 2;
}
function _transferFrom(address from, address to, uint256 id)
internal
{
// checks: sender and destination
require(from == ownerOf[id], "WRONG_FROM");
require(to != address(0), "INVALID_RECIPIENT");
// checks: can transfer
require(
msg.sender == from || msg.sender == getApproved[id] || isApprovedForAll[from][msg.sender],
"NOT_AUTHORIZED"
);
// effects: update balance
// Underflow of the sender's balance is impossible because we check for
// ownership above and the recipient's balance can't realistically overflow.
unchecked {
balanceOf[from]--;
balanceOf[to]++;
}
// effects: update owership
ownerOf[id] = to;
// effects: reclaim storage
delete getApproved[id];
// effects: update history
_updateHistory(to, id);
emit Transfer(from, to, id);
}
bytes constant onColor = "FFF";
bytes constant offColor = "333";
/// @dev Generate the SVG image for the given NFT.
function _tokenImage(bytes memory topHue, bytes memory bottomHue, uint256 hour, uint256 minute)
internal
pure
returns (string memory)
{
return
Base64.encode(
bytes.concat(
'<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 1000 1000">',
'<linearGradient id="bg" gradientTransform="rotate(90)">',
'<stop offset="0%" stop-color="hsl(', topHue, ',100%,89%)"/>',
'<stop offset="100%" stop-color="hsl(', bottomHue, ',77%,36%)"/>',
'</linearGradient>',
'<rect x="0" y="0" width="1000" height="1000" fill="url(#bg)"/>',
_binaryHour(hour),
_binaryMinute(minute),
'</svg>'
)
);
}
function _binaryHour(uint256 hour)
internal
pure
returns (bytes memory)
{
if (hour > 24) {
revert EthTime__NumberOutOfRange();
}
bytes[7] memory colors = _binaryColor(hour);
return
bytes.concat(
'<circle cx="665" cy="875" r="25" fill="#', colors[0], '"/>',
'<circle cx="665" cy="805" r="25" fill="#', colors[1], '"/>',
// skip colors[2]
'<circle cx="735" cy="875" r="25" fill="#', colors[3], '"/>',
'<circle cx="735" cy="805" r="25" fill="#', colors[4], '"/>',
'<circle cx="735" cy="735" r="25" fill="#', colors[5], '"/>',
'<circle cx="735" cy="665" r="25" fill="#', colors[6], '"/>'
);
}
function _binaryMinute(uint256 minute)
internal
pure
returns (bytes memory)
{
if (minute > 59) {
revert EthTime__NumberOutOfRange();
}
bytes[7] memory colors = _binaryColor(minute);
return
bytes.concat(
'<circle cx="805" cy="875" r="25" fill="#', colors[0], '"/>',
'<circle cx="805" cy="805" r="25" fill="#', colors[1], '"/>',
'<circle cx="805" cy="735" r="25" fill="#', colors[2], '"/>',
'<circle cx="875" cy="875" r="25" fill="#', colors[3], '"/>',
'<circle cx="875" cy="805" r="25" fill="#', colors[4], '"/>',
'<circle cx="875" cy="735" r="25" fill="#', colors[5], '"/>',
'<circle cx="875" cy="665" r="25" fill="#', colors[6], '"/>'
);
}
/// @dev Returns the colors to be used to display the time.
/// The first 3 bytes are used for the first digit, the remaining 4 bytes
/// for the second digit.
function _binaryColor(uint256 n)
internal
pure
returns (bytes[7] memory)
{
unchecked {
uint256 firstDigit = n / 10;
uint256 secondDigit = n % 10;
return [
(firstDigit & 0x1 != 0) ? onColor : offColor,
(firstDigit & 0x2 != 0) ? onColor : offColor,
(firstDigit & 0x4 != 0) ? onColor : offColor,
(secondDigit & 0x1 != 0) ? onColor : offColor,
(secondDigit & 0x2 != 0) ? onColor : offColor,
(secondDigit & 0x4 != 0) ? onColor : offColor,
(secondDigit & 0x8 != 0) ? onColor : offColor
];
}
}
function _computeHue(uint160 n, uint256 id)
internal
pure
returns (bytes memory)
{
uint160 t = n ^ uint160(id);
uint160 acc = t % 360;
return bytes(Strings.toString(acc));
}
function _adjustedHourMinutes(uint256 id)
internal
view
returns (uint256 hour, uint256 minute)
{
int256 signedUserTimestamp = int256(block.timestamp) - 60 * timeOffsetMinutes[id];
uint256 userTimestamp;
// this won't realistically ever happen
if (signedUserTimestamp <= 0) {
userTimestamp = 0;
} else {
userTimestamp = uint256(signedUserTimestamp);
}
hour = BokkyPooBahsDateTimeLibrary.getHour(userTimestamp);
minute = BokkyPooBahsDateTimeLibrary.getMinute(userTimestamp);
}
} | /// @notice ETH-Time NFT contract. | NatSpecSingleLine | _binaryColor | function _binaryColor(uint256 n)
internal
pure
returns (bytes[7] memory)
{
unchecked {
uint256 firstDigit = n / 10;
uint256 secondDigit = n % 10;
return [
(firstDigit & 0x1 != 0) ? onColor : offColor,
(firstDigit & 0x2 != 0) ? onColor : offColor,
(firstDigit & 0x4 != 0) ? onColor : offColor,
(secondDigit & 0x1 != 0) ? onColor : offColor,
(secondDigit & 0x2 != 0) ? onColor : offColor,
(secondDigit & 0x4 != 0) ? onColor : offColor,
(secondDigit & 0x8 != 0) ? onColor : offColor
];
}
}
| /// @dev Returns the colors to be used to display the time.
/// The first 3 bytes are used for the first digit, the remaining 4 bytes
/// for the second digit. | NatSpecSingleLine | v0.8.10+commit.fc410830 | {
"func_code_index": [
17426,
18126
]
} | 8,663 |
||
Hollow | Hollow.sol | 0x1020e32c0f831f61cc5be9e16ccc2fbc6c6c8369 | Solidity | Token | contract Token {
/// @return total amount of tokens
function totalSupply() constant returns (uint256 supply) {}
/// @param _owner The address from which the balance will be retrieved
/// @return The balance
function balanceOf(address _owner) constant returns (uint256 balance) {}
/// @notice send `_value` token to `_to` from `msg.sender`
/// @param _to The address of the recipient
/// @param _value The amount of token to be transferred
/// @return Whether the transfer was successful or not
function transfer(address _to, uint256 _value) returns (bool success) {}
/// @notice send `_value` token to `_to` from `_from` on the condition it is approved by `_from`
/// @param _from The address of the sender
/// @param _to The address of the recipient
/// @param _value The amount of token to be transferred
/// @return Whether the transfer was successful or not
function transferFrom(address _from, address _to, uint256 _value) returns (bool success) {}
/// @notice `msg.sender` approves `_addr` to spend `_value` tokens
/// @param _spender The address of the account able to transfer the tokens
/// @param _value The amount of wei to be approved for transfer
/// @return Whether the approval was successful or not
function approve(address _spender, uint256 _value) returns (bool success) {}
/// @param _owner The address of the account owning tokens
/// @param _spender The address of the account able to transfer the tokens
/// @return Amount of remaining tokens allowed to spent
function allowance(address _owner, address _spender) constant returns (uint256 remaining) {}
event Transfer(address indexed _from, address indexed _to, uint256 _value);
event Approval(address indexed _owner, address indexed _spender, uint256 _value);
} | totalSupply | function totalSupply() constant returns (uint256 supply) {}
| /// @return total amount of tokens | NatSpecSingleLine | v0.4.19+commit.c4cbbb05 | bzzr://cd5168dea995829c8c8e1370022707b5cba6753761cafcf6a14d88f050325663 | {
"func_code_index": [
60,
124
]
} | 8,664 |
|||
Hollow | Hollow.sol | 0x1020e32c0f831f61cc5be9e16ccc2fbc6c6c8369 | Solidity | Token | contract Token {
/// @return total amount of tokens
function totalSupply() constant returns (uint256 supply) {}
/// @param _owner The address from which the balance will be retrieved
/// @return The balance
function balanceOf(address _owner) constant returns (uint256 balance) {}
/// @notice send `_value` token to `_to` from `msg.sender`
/// @param _to The address of the recipient
/// @param _value The amount of token to be transferred
/// @return Whether the transfer was successful or not
function transfer(address _to, uint256 _value) returns (bool success) {}
/// @notice send `_value` token to `_to` from `_from` on the condition it is approved by `_from`
/// @param _from The address of the sender
/// @param _to The address of the recipient
/// @param _value The amount of token to be transferred
/// @return Whether the transfer was successful or not
function transferFrom(address _from, address _to, uint256 _value) returns (bool success) {}
/// @notice `msg.sender` approves `_addr` to spend `_value` tokens
/// @param _spender The address of the account able to transfer the tokens
/// @param _value The amount of wei to be approved for transfer
/// @return Whether the approval was successful or not
function approve(address _spender, uint256 _value) returns (bool success) {}
/// @param _owner The address of the account owning tokens
/// @param _spender The address of the account able to transfer the tokens
/// @return Amount of remaining tokens allowed to spent
function allowance(address _owner, address _spender) constant returns (uint256 remaining) {}
event Transfer(address indexed _from, address indexed _to, uint256 _value);
event Approval(address indexed _owner, address indexed _spender, uint256 _value);
} | balanceOf | function balanceOf(address _owner) constant returns (uint256 balance) {}
| /// @param _owner The address from which the balance will be retrieved
/// @return The balance | NatSpecSingleLine | v0.4.19+commit.c4cbbb05 | bzzr://cd5168dea995829c8c8e1370022707b5cba6753761cafcf6a14d88f050325663 | {
"func_code_index": [
232,
309
]
} | 8,665 |
|||
Hollow | Hollow.sol | 0x1020e32c0f831f61cc5be9e16ccc2fbc6c6c8369 | Solidity | Token | contract Token {
/// @return total amount of tokens
function totalSupply() constant returns (uint256 supply) {}
/// @param _owner The address from which the balance will be retrieved
/// @return The balance
function balanceOf(address _owner) constant returns (uint256 balance) {}
/// @notice send `_value` token to `_to` from `msg.sender`
/// @param _to The address of the recipient
/// @param _value The amount of token to be transferred
/// @return Whether the transfer was successful or not
function transfer(address _to, uint256 _value) returns (bool success) {}
/// @notice send `_value` token to `_to` from `_from` on the condition it is approved by `_from`
/// @param _from The address of the sender
/// @param _to The address of the recipient
/// @param _value The amount of token to be transferred
/// @return Whether the transfer was successful or not
function transferFrom(address _from, address _to, uint256 _value) returns (bool success) {}
/// @notice `msg.sender` approves `_addr` to spend `_value` tokens
/// @param _spender The address of the account able to transfer the tokens
/// @param _value The amount of wei to be approved for transfer
/// @return Whether the approval was successful or not
function approve(address _spender, uint256 _value) returns (bool success) {}
/// @param _owner The address of the account owning tokens
/// @param _spender The address of the account able to transfer the tokens
/// @return Amount of remaining tokens allowed to spent
function allowance(address _owner, address _spender) constant returns (uint256 remaining) {}
event Transfer(address indexed _from, address indexed _to, uint256 _value);
event Approval(address indexed _owner, address indexed _spender, uint256 _value);
} | transfer | function transfer(address _to, uint256 _value) returns (bool success) {}
| /// @notice send `_value` token to `_to` from `msg.sender`
/// @param _to The address of the recipient
/// @param _value The amount of token to be transferred
/// @return Whether the transfer was successful or not | NatSpecSingleLine | v0.4.19+commit.c4cbbb05 | bzzr://cd5168dea995829c8c8e1370022707b5cba6753761cafcf6a14d88f050325663 | {
"func_code_index": [
546,
623
]
} | 8,666 |
|||
Hollow | Hollow.sol | 0x1020e32c0f831f61cc5be9e16ccc2fbc6c6c8369 | Solidity | Token | contract Token {
/// @return total amount of tokens
function totalSupply() constant returns (uint256 supply) {}
/// @param _owner The address from which the balance will be retrieved
/// @return The balance
function balanceOf(address _owner) constant returns (uint256 balance) {}
/// @notice send `_value` token to `_to` from `msg.sender`
/// @param _to The address of the recipient
/// @param _value The amount of token to be transferred
/// @return Whether the transfer was successful or not
function transfer(address _to, uint256 _value) returns (bool success) {}
/// @notice send `_value` token to `_to` from `_from` on the condition it is approved by `_from`
/// @param _from The address of the sender
/// @param _to The address of the recipient
/// @param _value The amount of token to be transferred
/// @return Whether the transfer was successful or not
function transferFrom(address _from, address _to, uint256 _value) returns (bool success) {}
/// @notice `msg.sender` approves `_addr` to spend `_value` tokens
/// @param _spender The address of the account able to transfer the tokens
/// @param _value The amount of wei to be approved for transfer
/// @return Whether the approval was successful or not
function approve(address _spender, uint256 _value) returns (bool success) {}
/// @param _owner The address of the account owning tokens
/// @param _spender The address of the account able to transfer the tokens
/// @return Amount of remaining tokens allowed to spent
function allowance(address _owner, address _spender) constant returns (uint256 remaining) {}
event Transfer(address indexed _from, address indexed _to, uint256 _value);
event Approval(address indexed _owner, address indexed _spender, uint256 _value);
} | transferFrom | function transferFrom(address _from, address _to, uint256 _value) returns (bool success) {}
| /// @notice send `_value` token to `_to` from `_from` on the condition it is approved by `_from`
/// @param _from The address of the sender
/// @param _to The address of the recipient
/// @param _value The amount of token to be transferred
/// @return Whether the transfer was successful or not | NatSpecSingleLine | v0.4.19+commit.c4cbbb05 | bzzr://cd5168dea995829c8c8e1370022707b5cba6753761cafcf6a14d88f050325663 | {
"func_code_index": [
946,
1042
]
} | 8,667 |
|||
Hollow | Hollow.sol | 0x1020e32c0f831f61cc5be9e16ccc2fbc6c6c8369 | Solidity | Token | contract Token {
/// @return total amount of tokens
function totalSupply() constant returns (uint256 supply) {}
/// @param _owner The address from which the balance will be retrieved
/// @return The balance
function balanceOf(address _owner) constant returns (uint256 balance) {}
/// @notice send `_value` token to `_to` from `msg.sender`
/// @param _to The address of the recipient
/// @param _value The amount of token to be transferred
/// @return Whether the transfer was successful or not
function transfer(address _to, uint256 _value) returns (bool success) {}
/// @notice send `_value` token to `_to` from `_from` on the condition it is approved by `_from`
/// @param _from The address of the sender
/// @param _to The address of the recipient
/// @param _value The amount of token to be transferred
/// @return Whether the transfer was successful or not
function transferFrom(address _from, address _to, uint256 _value) returns (bool success) {}
/// @notice `msg.sender` approves `_addr` to spend `_value` tokens
/// @param _spender The address of the account able to transfer the tokens
/// @param _value The amount of wei to be approved for transfer
/// @return Whether the approval was successful or not
function approve(address _spender, uint256 _value) returns (bool success) {}
/// @param _owner The address of the account owning tokens
/// @param _spender The address of the account able to transfer the tokens
/// @return Amount of remaining tokens allowed to spent
function allowance(address _owner, address _spender) constant returns (uint256 remaining) {}
event Transfer(address indexed _from, address indexed _to, uint256 _value);
event Approval(address indexed _owner, address indexed _spender, uint256 _value);
} | approve | function approve(address _spender, uint256 _value) returns (bool success) {}
| /// @notice `msg.sender` approves `_addr` to spend `_value` tokens
/// @param _spender The address of the account able to transfer the tokens
/// @param _value The amount of wei to be approved for transfer
/// @return Whether the approval was successful or not | NatSpecSingleLine | v0.4.19+commit.c4cbbb05 | bzzr://cd5168dea995829c8c8e1370022707b5cba6753761cafcf6a14d88f050325663 | {
"func_code_index": [
1326,
1407
]
} | 8,668 |
|||
Hollow | Hollow.sol | 0x1020e32c0f831f61cc5be9e16ccc2fbc6c6c8369 | Solidity | Token | contract Token {
/// @return total amount of tokens
function totalSupply() constant returns (uint256 supply) {}
/// @param _owner The address from which the balance will be retrieved
/// @return The balance
function balanceOf(address _owner) constant returns (uint256 balance) {}
/// @notice send `_value` token to `_to` from `msg.sender`
/// @param _to The address of the recipient
/// @param _value The amount of token to be transferred
/// @return Whether the transfer was successful or not
function transfer(address _to, uint256 _value) returns (bool success) {}
/// @notice send `_value` token to `_to` from `_from` on the condition it is approved by `_from`
/// @param _from The address of the sender
/// @param _to The address of the recipient
/// @param _value The amount of token to be transferred
/// @return Whether the transfer was successful or not
function transferFrom(address _from, address _to, uint256 _value) returns (bool success) {}
/// @notice `msg.sender` approves `_addr` to spend `_value` tokens
/// @param _spender The address of the account able to transfer the tokens
/// @param _value The amount of wei to be approved for transfer
/// @return Whether the approval was successful or not
function approve(address _spender, uint256 _value) returns (bool success) {}
/// @param _owner The address of the account owning tokens
/// @param _spender The address of the account able to transfer the tokens
/// @return Amount of remaining tokens allowed to spent
function allowance(address _owner, address _spender) constant returns (uint256 remaining) {}
event Transfer(address indexed _from, address indexed _to, uint256 _value);
event Approval(address indexed _owner, address indexed _spender, uint256 _value);
} | allowance | function allowance(address _owner, address _spender) constant returns (uint256 remaining) {}
| /// @param _owner The address of the account owning tokens
/// @param _spender The address of the account able to transfer the tokens
/// @return Amount of remaining tokens allowed to spent | NatSpecSingleLine | v0.4.19+commit.c4cbbb05 | bzzr://cd5168dea995829c8c8e1370022707b5cba6753761cafcf6a14d88f050325663 | {
"func_code_index": [
1615,
1712
]
} | 8,669 |
|||
Hollow | Hollow.sol | 0x1020e32c0f831f61cc5be9e16ccc2fbc6c6c8369 | Solidity | Hollow | contract Hollow is StandardToken {
function () {
//if ether is sent to this address, send it back.
throw;
}
/* Public variables of the token */
/*
NOTE:
The following variables are OPTIONAL vanities. One does not have to include them.
They allow one to customise the token contract & in no way influences the core functionality.
Some wallets/interfaces might not even bother to look at this information.
*/
string public name; //fancy name: eg Simon Bucks
uint8 public decimals; //How many decimals to show. ie. There could 1000 base units with 3 decimals. Meaning 0.980 SBX = 980 base units. It's like comparing 1 wei to 1 ether.
string public symbol; //An identifier: eg SBX
string public version = 'H1.0'; //human 0.1 standard. Just an arbitrary versioning scheme.
//
// CHANGE THESE VALUES FOR YOUR TOKEN
//
//make sure this function name matches the contract name above. So if you're token is called TutorialToken, make sure the //contract name above is also TutorialToken instead of ERC20Token
function Hollow(
) {
balances[msg.sender] = 1618033988749894; // Give the creator all initial tokens (100000 for example)
totalSupply = 1618033988749894; // Update total supply (100000 for example)
name = "Hollow Coin"; // Set the name for display purposes
decimals = 8; // Amount of decimals for display purposes
symbol = "HOLLOW"; // Set the symbol for display purposes
}
/* Approves and then calls the receiving contract */
function approveAndCall(address _spender, uint256 _value, bytes _extraData) returns (bool success) {
allowed[msg.sender][_spender] = _value;
Approval(msg.sender, _spender, _value);
//call the receiveApproval function on the contract you want to be notified. This crafts the function signature manually so one doesn't have to include a contract in here just for this.
//receiveApproval(address _from, uint256 _value, address _tokenContract, bytes _extraData)
//it is assumed that when does this that the call *should* succeed, otherwise one would use vanilla approve instead.
if(!_spender.call(bytes4(bytes32(sha3("receiveApproval(address,uint256,address,bytes)"))), msg.sender, _value, this, _extraData)) { throw; }
return true;
}
} | //name this contract whatever you'd like | LineComment | Hollow | function Hollow(
) {
balances[msg.sender] = 1618033988749894; // Give the creator all initial tokens (100000 for example)
totalSupply = 1618033988749894; // Update total supply (100000 for example)
name = "Hollow Coin"; // Set the name for display purposes
decimals = 8; // Amount of decimals for display purposes
symbol = "HOLLOW"; // Set the symbol for display purposes
}
| //human 0.1 standard. Just an arbitrary versioning scheme.
//
// CHANGE THESE VALUES FOR YOUR TOKEN
//
//make sure this function name matches the contract name above. So if you're token is called TutorialToken, make sure the //contract name above is also TutorialToken instead of ERC20Token | LineComment | v0.4.19+commit.c4cbbb05 | bzzr://cd5168dea995829c8c8e1370022707b5cba6753761cafcf6a14d88f050325663 | {
"func_code_index": [
1155,
1720
]
} | 8,670 |
|
Hollow | Hollow.sol | 0x1020e32c0f831f61cc5be9e16ccc2fbc6c6c8369 | Solidity | Hollow | contract Hollow is StandardToken {
function () {
//if ether is sent to this address, send it back.
throw;
}
/* Public variables of the token */
/*
NOTE:
The following variables are OPTIONAL vanities. One does not have to include them.
They allow one to customise the token contract & in no way influences the core functionality.
Some wallets/interfaces might not even bother to look at this information.
*/
string public name; //fancy name: eg Simon Bucks
uint8 public decimals; //How many decimals to show. ie. There could 1000 base units with 3 decimals. Meaning 0.980 SBX = 980 base units. It's like comparing 1 wei to 1 ether.
string public symbol; //An identifier: eg SBX
string public version = 'H1.0'; //human 0.1 standard. Just an arbitrary versioning scheme.
//
// CHANGE THESE VALUES FOR YOUR TOKEN
//
//make sure this function name matches the contract name above. So if you're token is called TutorialToken, make sure the //contract name above is also TutorialToken instead of ERC20Token
function Hollow(
) {
balances[msg.sender] = 1618033988749894; // Give the creator all initial tokens (100000 for example)
totalSupply = 1618033988749894; // Update total supply (100000 for example)
name = "Hollow Coin"; // Set the name for display purposes
decimals = 8; // Amount of decimals for display purposes
symbol = "HOLLOW"; // Set the symbol for display purposes
}
/* Approves and then calls the receiving contract */
function approveAndCall(address _spender, uint256 _value, bytes _extraData) returns (bool success) {
allowed[msg.sender][_spender] = _value;
Approval(msg.sender, _spender, _value);
//call the receiveApproval function on the contract you want to be notified. This crafts the function signature manually so one doesn't have to include a contract in here just for this.
//receiveApproval(address _from, uint256 _value, address _tokenContract, bytes _extraData)
//it is assumed that when does this that the call *should* succeed, otherwise one would use vanilla approve instead.
if(!_spender.call(bytes4(bytes32(sha3("receiveApproval(address,uint256,address,bytes)"))), msg.sender, _value, this, _extraData)) { throw; }
return true;
}
} | //name this contract whatever you'd like | LineComment | approveAndCall | function approveAndCall(address _spender, uint256 _value, bytes _extraData) returns (bool success) {
allowed[msg.sender][_spender] = _value;
Approval(msg.sender, _spender, _value);
//call the receiveApproval function on the contract you want to be notified. This crafts the function signature manually so one doesn't have to include a contract in here just for this.
//receiveApproval(address _from, uint256 _value, address _tokenContract, bytes _extraData)
//it is assumed that when does this that the call *should* succeed, otherwise one would use vanilla approve instead.
if(!_spender.call(bytes4(bytes32(sha3("receiveApproval(address,uint256,address,bytes)"))), msg.sender, _value, this, _extraData)) { throw; }
return true;
}
| /* Approves and then calls the receiving contract */ | Comment | v0.4.19+commit.c4cbbb05 | bzzr://cd5168dea995829c8c8e1370022707b5cba6753761cafcf6a14d88f050325663 | {
"func_code_index": [
1781,
2586
]
} | 8,671 |
|
Address | Address.sol | 0xaaf28fc39e0dc1fa4b1c7f02b034f48b211d3792 | Solidity | IERC20 | interface IERC20 {
/**
* @dev Returns the amount of tokens in existence.
*/
function totalSupply() external view returns (uint256);
/**
* @dev Returns the amount of tokens owned by `account`.
*/
function balanceOf(address account) external view returns (uint256);
/**
* @dev Moves `amount` tokens from the caller's account to `recipient`.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* Emits a {Transfer} event.
*/
function transfer(address recipient, uint256 amount) external returns (bool);
/**
* @dev Returns the remaining number of tokens that `spender` will be
* allowed to spend on behalf of `owner` through {transferFrom}. This is
* zero by default.
*
* This value changes when {approve} or {transferFrom} are called.
*/
function allowance(address owner, address spender) external view returns (uint256);
/**
* @dev Sets `amount` as the allowance of `spender` over the caller's tokens.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* IMPORTANT: Beware that changing an allowance with this method brings the risk
* that someone may use both the old and the new allowance by unfortunate
* transaction ordering. One possible solution to mitigate this race
* condition is to first reduce the spender's allowance to 0 and set the
* desired value afterwards:
* https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729
*
* Emits an {Approval} event.
*/
function approve(address spender, uint256 amount) external returns (bool);
/**
* @dev Moves `amount` tokens from `sender` to `recipient` using the
* allowance mechanism. `amount` is then deducted from the caller's
* allowance.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* Emits a {Transfer} event.
*/
function transferFrom(address sender, address recipient, uint256 amount) external returns (bool);
/**
* @dev Emitted when `value` tokens are moved from one account (`from`) to
* another (`to`).
*
* Note that `value` may be zero.
*/
event Transfer(address indexed from, address indexed to, uint256 value);
/**
* @dev Emitted when the allowance of a `spender` for an `owner` is set by
* a call to {approve}. `value` is the new allowance.
*/
event Approval(address indexed owner, address indexed spender, uint256 value);
} | totalSupply | function totalSupply() external view returns (uint256);
| /**
* @dev Returns the amount of tokens in existence.
*/ | NatSpecMultiLine | v0.6.12+commit.27d51765 | MIT | ipfs://da9bea1f0f6f0a5e146550ef47bb79e6d7e0ee4d5b464330b11af0c2351c4e00 | {
"func_code_index": [
94,
154
]
} | 8,672 |
||
Address | Address.sol | 0xaaf28fc39e0dc1fa4b1c7f02b034f48b211d3792 | Solidity | IERC20 | interface IERC20 {
/**
* @dev Returns the amount of tokens in existence.
*/
function totalSupply() external view returns (uint256);
/**
* @dev Returns the amount of tokens owned by `account`.
*/
function balanceOf(address account) external view returns (uint256);
/**
* @dev Moves `amount` tokens from the caller's account to `recipient`.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* Emits a {Transfer} event.
*/
function transfer(address recipient, uint256 amount) external returns (bool);
/**
* @dev Returns the remaining number of tokens that `spender` will be
* allowed to spend on behalf of `owner` through {transferFrom}. This is
* zero by default.
*
* This value changes when {approve} or {transferFrom} are called.
*/
function allowance(address owner, address spender) external view returns (uint256);
/**
* @dev Sets `amount` as the allowance of `spender` over the caller's tokens.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* IMPORTANT: Beware that changing an allowance with this method brings the risk
* that someone may use both the old and the new allowance by unfortunate
* transaction ordering. One possible solution to mitigate this race
* condition is to first reduce the spender's allowance to 0 and set the
* desired value afterwards:
* https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729
*
* Emits an {Approval} event.
*/
function approve(address spender, uint256 amount) external returns (bool);
/**
* @dev Moves `amount` tokens from `sender` to `recipient` using the
* allowance mechanism. `amount` is then deducted from the caller's
* allowance.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* Emits a {Transfer} event.
*/
function transferFrom(address sender, address recipient, uint256 amount) external returns (bool);
/**
* @dev Emitted when `value` tokens are moved from one account (`from`) to
* another (`to`).
*
* Note that `value` may be zero.
*/
event Transfer(address indexed from, address indexed to, uint256 value);
/**
* @dev Emitted when the allowance of a `spender` for an `owner` is set by
* a call to {approve}. `value` is the new allowance.
*/
event Approval(address indexed owner, address indexed spender, uint256 value);
} | balanceOf | function balanceOf(address account) external view returns (uint256);
| /**
* @dev Returns the amount of tokens owned by `account`.
*/ | NatSpecMultiLine | v0.6.12+commit.27d51765 | MIT | ipfs://da9bea1f0f6f0a5e146550ef47bb79e6d7e0ee4d5b464330b11af0c2351c4e00 | {
"func_code_index": [
237,
310
]
} | 8,673 |
||
Address | Address.sol | 0xaaf28fc39e0dc1fa4b1c7f02b034f48b211d3792 | Solidity | IERC20 | interface IERC20 {
/**
* @dev Returns the amount of tokens in existence.
*/
function totalSupply() external view returns (uint256);
/**
* @dev Returns the amount of tokens owned by `account`.
*/
function balanceOf(address account) external view returns (uint256);
/**
* @dev Moves `amount` tokens from the caller's account to `recipient`.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* Emits a {Transfer} event.
*/
function transfer(address recipient, uint256 amount) external returns (bool);
/**
* @dev Returns the remaining number of tokens that `spender` will be
* allowed to spend on behalf of `owner` through {transferFrom}. This is
* zero by default.
*
* This value changes when {approve} or {transferFrom} are called.
*/
function allowance(address owner, address spender) external view returns (uint256);
/**
* @dev Sets `amount` as the allowance of `spender` over the caller's tokens.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* IMPORTANT: Beware that changing an allowance with this method brings the risk
* that someone may use both the old and the new allowance by unfortunate
* transaction ordering. One possible solution to mitigate this race
* condition is to first reduce the spender's allowance to 0 and set the
* desired value afterwards:
* https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729
*
* Emits an {Approval} event.
*/
function approve(address spender, uint256 amount) external returns (bool);
/**
* @dev Moves `amount` tokens from `sender` to `recipient` using the
* allowance mechanism. `amount` is then deducted from the caller's
* allowance.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* Emits a {Transfer} event.
*/
function transferFrom(address sender, address recipient, uint256 amount) external returns (bool);
/**
* @dev Emitted when `value` tokens are moved from one account (`from`) to
* another (`to`).
*
* Note that `value` may be zero.
*/
event Transfer(address indexed from, address indexed to, uint256 value);
/**
* @dev Emitted when the allowance of a `spender` for an `owner` is set by
* a call to {approve}. `value` is the new allowance.
*/
event Approval(address indexed owner, address indexed spender, uint256 value);
} | transfer | function transfer(address recipient, uint256 amount) external returns (bool);
| /**
* @dev Moves `amount` tokens from the caller's account to `recipient`.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* Emits a {Transfer} event.
*/ | NatSpecMultiLine | v0.6.12+commit.27d51765 | MIT | ipfs://da9bea1f0f6f0a5e146550ef47bb79e6d7e0ee4d5b464330b11af0c2351c4e00 | {
"func_code_index": [
534,
616
]
} | 8,674 |
||
Address | Address.sol | 0xaaf28fc39e0dc1fa4b1c7f02b034f48b211d3792 | Solidity | IERC20 | interface IERC20 {
/**
* @dev Returns the amount of tokens in existence.
*/
function totalSupply() external view returns (uint256);
/**
* @dev Returns the amount of tokens owned by `account`.
*/
function balanceOf(address account) external view returns (uint256);
/**
* @dev Moves `amount` tokens from the caller's account to `recipient`.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* Emits a {Transfer} event.
*/
function transfer(address recipient, uint256 amount) external returns (bool);
/**
* @dev Returns the remaining number of tokens that `spender` will be
* allowed to spend on behalf of `owner` through {transferFrom}. This is
* zero by default.
*
* This value changes when {approve} or {transferFrom} are called.
*/
function allowance(address owner, address spender) external view returns (uint256);
/**
* @dev Sets `amount` as the allowance of `spender` over the caller's tokens.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* IMPORTANT: Beware that changing an allowance with this method brings the risk
* that someone may use both the old and the new allowance by unfortunate
* transaction ordering. One possible solution to mitigate this race
* condition is to first reduce the spender's allowance to 0 and set the
* desired value afterwards:
* https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729
*
* Emits an {Approval} event.
*/
function approve(address spender, uint256 amount) external returns (bool);
/**
* @dev Moves `amount` tokens from `sender` to `recipient` using the
* allowance mechanism. `amount` is then deducted from the caller's
* allowance.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* Emits a {Transfer} event.
*/
function transferFrom(address sender, address recipient, uint256 amount) external returns (bool);
/**
* @dev Emitted when `value` tokens are moved from one account (`from`) to
* another (`to`).
*
* Note that `value` may be zero.
*/
event Transfer(address indexed from, address indexed to, uint256 value);
/**
* @dev Emitted when the allowance of a `spender` for an `owner` is set by
* a call to {approve}. `value` is the new allowance.
*/
event Approval(address indexed owner, address indexed spender, uint256 value);
} | allowance | function allowance(address owner, address spender) external view returns (uint256);
| /**
* @dev Returns the remaining number of tokens that `spender` will be
* allowed to spend on behalf of `owner` through {transferFrom}. This is
* zero by default.
*
* This value changes when {approve} or {transferFrom} are called.
*/ | NatSpecMultiLine | v0.6.12+commit.27d51765 | MIT | ipfs://da9bea1f0f6f0a5e146550ef47bb79e6d7e0ee4d5b464330b11af0c2351c4e00 | {
"func_code_index": [
895,
983
]
} | 8,675 |
||
Address | Address.sol | 0xaaf28fc39e0dc1fa4b1c7f02b034f48b211d3792 | Solidity | IERC20 | interface IERC20 {
/**
* @dev Returns the amount of tokens in existence.
*/
function totalSupply() external view returns (uint256);
/**
* @dev Returns the amount of tokens owned by `account`.
*/
function balanceOf(address account) external view returns (uint256);
/**
* @dev Moves `amount` tokens from the caller's account to `recipient`.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* Emits a {Transfer} event.
*/
function transfer(address recipient, uint256 amount) external returns (bool);
/**
* @dev Returns the remaining number of tokens that `spender` will be
* allowed to spend on behalf of `owner` through {transferFrom}. This is
* zero by default.
*
* This value changes when {approve} or {transferFrom} are called.
*/
function allowance(address owner, address spender) external view returns (uint256);
/**
* @dev Sets `amount` as the allowance of `spender` over the caller's tokens.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* IMPORTANT: Beware that changing an allowance with this method brings the risk
* that someone may use both the old and the new allowance by unfortunate
* transaction ordering. One possible solution to mitigate this race
* condition is to first reduce the spender's allowance to 0 and set the
* desired value afterwards:
* https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729
*
* Emits an {Approval} event.
*/
function approve(address spender, uint256 amount) external returns (bool);
/**
* @dev Moves `amount` tokens from `sender` to `recipient` using the
* allowance mechanism. `amount` is then deducted from the caller's
* allowance.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* Emits a {Transfer} event.
*/
function transferFrom(address sender, address recipient, uint256 amount) external returns (bool);
/**
* @dev Emitted when `value` tokens are moved from one account (`from`) to
* another (`to`).
*
* Note that `value` may be zero.
*/
event Transfer(address indexed from, address indexed to, uint256 value);
/**
* @dev Emitted when the allowance of a `spender` for an `owner` is set by
* a call to {approve}. `value` is the new allowance.
*/
event Approval(address indexed owner, address indexed spender, uint256 value);
} | approve | function approve(address spender, uint256 amount) external returns (bool);
| /**
* @dev Sets `amount` as the allowance of `spender` over the caller's tokens.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* IMPORTANT: Beware that changing an allowance with this method brings the risk
* that someone may use both the old and the new allowance by unfortunate
* transaction ordering. One possible solution to mitigate this race
* condition is to first reduce the spender's allowance to 0 and set the
* desired value afterwards:
* https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729
*
* Emits an {Approval} event.
*/ | NatSpecMultiLine | v0.6.12+commit.27d51765 | MIT | ipfs://da9bea1f0f6f0a5e146550ef47bb79e6d7e0ee4d5b464330b11af0c2351c4e00 | {
"func_code_index": [
1647,
1726
]
} | 8,676 |
||
Address | Address.sol | 0xaaf28fc39e0dc1fa4b1c7f02b034f48b211d3792 | Solidity | IERC20 | interface IERC20 {
/**
* @dev Returns the amount of tokens in existence.
*/
function totalSupply() external view returns (uint256);
/**
* @dev Returns the amount of tokens owned by `account`.
*/
function balanceOf(address account) external view returns (uint256);
/**
* @dev Moves `amount` tokens from the caller's account to `recipient`.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* Emits a {Transfer} event.
*/
function transfer(address recipient, uint256 amount) external returns (bool);
/**
* @dev Returns the remaining number of tokens that `spender` will be
* allowed to spend on behalf of `owner` through {transferFrom}. This is
* zero by default.
*
* This value changes when {approve} or {transferFrom} are called.
*/
function allowance(address owner, address spender) external view returns (uint256);
/**
* @dev Sets `amount` as the allowance of `spender` over the caller's tokens.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* IMPORTANT: Beware that changing an allowance with this method brings the risk
* that someone may use both the old and the new allowance by unfortunate
* transaction ordering. One possible solution to mitigate this race
* condition is to first reduce the spender's allowance to 0 and set the
* desired value afterwards:
* https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729
*
* Emits an {Approval} event.
*/
function approve(address spender, uint256 amount) external returns (bool);
/**
* @dev Moves `amount` tokens from `sender` to `recipient` using the
* allowance mechanism. `amount` is then deducted from the caller's
* allowance.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* Emits a {Transfer} event.
*/
function transferFrom(address sender, address recipient, uint256 amount) external returns (bool);
/**
* @dev Emitted when `value` tokens are moved from one account (`from`) to
* another (`to`).
*
* Note that `value` may be zero.
*/
event Transfer(address indexed from, address indexed to, uint256 value);
/**
* @dev Emitted when the allowance of a `spender` for an `owner` is set by
* a call to {approve}. `value` is the new allowance.
*/
event Approval(address indexed owner, address indexed spender, uint256 value);
} | transferFrom | function transferFrom(address sender, address recipient, uint256 amount) external returns (bool);
| /**
* @dev Moves `amount` tokens from `sender` to `recipient` using the
* allowance mechanism. `amount` is then deducted from the caller's
* allowance.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* Emits a {Transfer} event.
*/ | NatSpecMultiLine | v0.6.12+commit.27d51765 | MIT | ipfs://da9bea1f0f6f0a5e146550ef47bb79e6d7e0ee4d5b464330b11af0c2351c4e00 | {
"func_code_index": [
2039,
2141
]
} | 8,677 |
||
Address | Address.sol | 0xaaf28fc39e0dc1fa4b1c7f02b034f48b211d3792 | Solidity | SafeMath | library SafeMath {
/**
* @dev Returns the addition of two unsigned integers, reverting on
* overflow.
*
* Counterpart to Solidity's `+` operator.
*
* Requirements:
*
* - Addition cannot overflow.
*/
function add(uint256 a, uint256 b) internal pure returns (uint256) {
uint256 c = a + b;
require(c >= a, "SafeMath: addition overflow");
return c;
}
/**
* @dev Returns the subtraction of two unsigned integers, reverting on
* overflow (when the result is negative).
*
* Counterpart to Solidity's `-` operator.
*
* Requirements:
*
* - Subtraction cannot overflow.
*/
function sub(uint256 a, uint256 b) internal pure returns (uint256) {
return sub(a, b, "SafeMath: subtraction overflow");
}
/**
* @dev Returns the subtraction of two unsigned integers, reverting with custom message on
* overflow (when the result is negative).
*
* Counterpart to Solidity's `-` operator.
*
* Requirements:
*
* - Subtraction cannot overflow.
*/
function sub(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
require(b <= a, errorMessage);
uint256 c = a - b;
return c;
}
/**
* @dev Returns the multiplication of two unsigned integers, reverting on
* overflow.
*
* Counterpart to Solidity's `*` operator.
*
* Requirements:
*
* - Multiplication cannot overflow.
*/
function mul(uint256 a, uint256 b) internal pure returns (uint256) {
// Gas optimization: this is cheaper than requiring 'a' not being zero, but the
// benefit is lost if 'b' is also tested.
// See: https://github.com/OpenZeppelin/openzeppelin-contracts/pull/522
if (a == 0) {
return 0;
}
uint256 c = a * b;
require(c / a == b, "SafeMath: multiplication overflow");
return c;
}
/**
* @dev Returns the integer division of two unsigned integers. Reverts on
* division by zero. The result is rounded towards zero.
*
* Counterpart to Solidity's `/` operator. Note: this function uses a
* `revert` opcode (which leaves remaining gas untouched) while Solidity
* uses an invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
*
* - The divisor cannot be zero.
*/
function div(uint256 a, uint256 b) internal pure returns (uint256) {
return div(a, b, "SafeMath: division by zero");
}
/**
* @dev Returns the integer division of two unsigned integers. Reverts with custom message on
* division by zero. The result is rounded towards zero.
*
* Counterpart to Solidity's `/` operator. Note: this function uses a
* `revert` opcode (which leaves remaining gas untouched) while Solidity
* uses an invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
*
* - The divisor cannot be zero.
*/
function div(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
require(b > 0, errorMessage);
uint256 c = a / b;
// assert(a == b * c + a % b); // There is no case in which this doesn't hold
return c;
}
/**
* @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
* Reverts when dividing by zero.
*
* Counterpart to Solidity's `%` operator. This function uses a `revert`
* opcode (which leaves remaining gas untouched) while Solidity uses an
* invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
*
* - The divisor cannot be zero.
*/
function mod(uint256 a, uint256 b) internal pure returns (uint256) {
return mod(a, b, "SafeMath: modulo by zero");
}
/**
* @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
* Reverts with custom message when dividing by zero.
*
* Counterpart to Solidity's `%` operator. This function uses a `revert`
* opcode (which leaves remaining gas untouched) while Solidity uses an
* invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
*
* - The divisor cannot be zero.
*/
function mod(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
require(b != 0, errorMessage);
return a % b;
}
} | add | function add(uint256 a, uint256 b) internal pure returns (uint256) {
uint256 c = a + b;
require(c >= a, "SafeMath: addition overflow");
return c;
}
| /**
* @dev Returns the addition of two unsigned integers, reverting on
* overflow.
*
* Counterpart to Solidity's `+` operator.
*
* Requirements:
*
* - Addition cannot overflow.
*/ | NatSpecMultiLine | v0.6.12+commit.27d51765 | MIT | ipfs://da9bea1f0f6f0a5e146550ef47bb79e6d7e0ee4d5b464330b11af0c2351c4e00 | {
"func_code_index": [
259,
445
]
} | 8,678 |
||
Address | Address.sol | 0xaaf28fc39e0dc1fa4b1c7f02b034f48b211d3792 | Solidity | SafeMath | library SafeMath {
/**
* @dev Returns the addition of two unsigned integers, reverting on
* overflow.
*
* Counterpart to Solidity's `+` operator.
*
* Requirements:
*
* - Addition cannot overflow.
*/
function add(uint256 a, uint256 b) internal pure returns (uint256) {
uint256 c = a + b;
require(c >= a, "SafeMath: addition overflow");
return c;
}
/**
* @dev Returns the subtraction of two unsigned integers, reverting on
* overflow (when the result is negative).
*
* Counterpart to Solidity's `-` operator.
*
* Requirements:
*
* - Subtraction cannot overflow.
*/
function sub(uint256 a, uint256 b) internal pure returns (uint256) {
return sub(a, b, "SafeMath: subtraction overflow");
}
/**
* @dev Returns the subtraction of two unsigned integers, reverting with custom message on
* overflow (when the result is negative).
*
* Counterpart to Solidity's `-` operator.
*
* Requirements:
*
* - Subtraction cannot overflow.
*/
function sub(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
require(b <= a, errorMessage);
uint256 c = a - b;
return c;
}
/**
* @dev Returns the multiplication of two unsigned integers, reverting on
* overflow.
*
* Counterpart to Solidity's `*` operator.
*
* Requirements:
*
* - Multiplication cannot overflow.
*/
function mul(uint256 a, uint256 b) internal pure returns (uint256) {
// Gas optimization: this is cheaper than requiring 'a' not being zero, but the
// benefit is lost if 'b' is also tested.
// See: https://github.com/OpenZeppelin/openzeppelin-contracts/pull/522
if (a == 0) {
return 0;
}
uint256 c = a * b;
require(c / a == b, "SafeMath: multiplication overflow");
return c;
}
/**
* @dev Returns the integer division of two unsigned integers. Reverts on
* division by zero. The result is rounded towards zero.
*
* Counterpart to Solidity's `/` operator. Note: this function uses a
* `revert` opcode (which leaves remaining gas untouched) while Solidity
* uses an invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
*
* - The divisor cannot be zero.
*/
function div(uint256 a, uint256 b) internal pure returns (uint256) {
return div(a, b, "SafeMath: division by zero");
}
/**
* @dev Returns the integer division of two unsigned integers. Reverts with custom message on
* division by zero. The result is rounded towards zero.
*
* Counterpart to Solidity's `/` operator. Note: this function uses a
* `revert` opcode (which leaves remaining gas untouched) while Solidity
* uses an invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
*
* - The divisor cannot be zero.
*/
function div(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
require(b > 0, errorMessage);
uint256 c = a / b;
// assert(a == b * c + a % b); // There is no case in which this doesn't hold
return c;
}
/**
* @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
* Reverts when dividing by zero.
*
* Counterpart to Solidity's `%` operator. This function uses a `revert`
* opcode (which leaves remaining gas untouched) while Solidity uses an
* invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
*
* - The divisor cannot be zero.
*/
function mod(uint256 a, uint256 b) internal pure returns (uint256) {
return mod(a, b, "SafeMath: modulo by zero");
}
/**
* @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
* Reverts with custom message when dividing by zero.
*
* Counterpart to Solidity's `%` operator. This function uses a `revert`
* opcode (which leaves remaining gas untouched) while Solidity uses an
* invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
*
* - The divisor cannot be zero.
*/
function mod(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
require(b != 0, errorMessage);
return a % b;
}
} | sub | function sub(uint256 a, uint256 b) internal pure returns (uint256) {
return sub(a, b, "SafeMath: subtraction overflow");
}
| /**
* @dev Returns the subtraction of two unsigned integers, reverting on
* overflow (when the result is negative).
*
* Counterpart to Solidity's `-` operator.
*
* Requirements:
*
* - Subtraction cannot overflow.
*/ | NatSpecMultiLine | v0.6.12+commit.27d51765 | MIT | ipfs://da9bea1f0f6f0a5e146550ef47bb79e6d7e0ee4d5b464330b11af0c2351c4e00 | {
"func_code_index": [
723,
864
]
} | 8,679 |
||
Address | Address.sol | 0xaaf28fc39e0dc1fa4b1c7f02b034f48b211d3792 | Solidity | SafeMath | library SafeMath {
/**
* @dev Returns the addition of two unsigned integers, reverting on
* overflow.
*
* Counterpart to Solidity's `+` operator.
*
* Requirements:
*
* - Addition cannot overflow.
*/
function add(uint256 a, uint256 b) internal pure returns (uint256) {
uint256 c = a + b;
require(c >= a, "SafeMath: addition overflow");
return c;
}
/**
* @dev Returns the subtraction of two unsigned integers, reverting on
* overflow (when the result is negative).
*
* Counterpart to Solidity's `-` operator.
*
* Requirements:
*
* - Subtraction cannot overflow.
*/
function sub(uint256 a, uint256 b) internal pure returns (uint256) {
return sub(a, b, "SafeMath: subtraction overflow");
}
/**
* @dev Returns the subtraction of two unsigned integers, reverting with custom message on
* overflow (when the result is negative).
*
* Counterpart to Solidity's `-` operator.
*
* Requirements:
*
* - Subtraction cannot overflow.
*/
function sub(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
require(b <= a, errorMessage);
uint256 c = a - b;
return c;
}
/**
* @dev Returns the multiplication of two unsigned integers, reverting on
* overflow.
*
* Counterpart to Solidity's `*` operator.
*
* Requirements:
*
* - Multiplication cannot overflow.
*/
function mul(uint256 a, uint256 b) internal pure returns (uint256) {
// Gas optimization: this is cheaper than requiring 'a' not being zero, but the
// benefit is lost if 'b' is also tested.
// See: https://github.com/OpenZeppelin/openzeppelin-contracts/pull/522
if (a == 0) {
return 0;
}
uint256 c = a * b;
require(c / a == b, "SafeMath: multiplication overflow");
return c;
}
/**
* @dev Returns the integer division of two unsigned integers. Reverts on
* division by zero. The result is rounded towards zero.
*
* Counterpart to Solidity's `/` operator. Note: this function uses a
* `revert` opcode (which leaves remaining gas untouched) while Solidity
* uses an invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
*
* - The divisor cannot be zero.
*/
function div(uint256 a, uint256 b) internal pure returns (uint256) {
return div(a, b, "SafeMath: division by zero");
}
/**
* @dev Returns the integer division of two unsigned integers. Reverts with custom message on
* division by zero. The result is rounded towards zero.
*
* Counterpart to Solidity's `/` operator. Note: this function uses a
* `revert` opcode (which leaves remaining gas untouched) while Solidity
* uses an invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
*
* - The divisor cannot be zero.
*/
function div(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
require(b > 0, errorMessage);
uint256 c = a / b;
// assert(a == b * c + a % b); // There is no case in which this doesn't hold
return c;
}
/**
* @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
* Reverts when dividing by zero.
*
* Counterpart to Solidity's `%` operator. This function uses a `revert`
* opcode (which leaves remaining gas untouched) while Solidity uses an
* invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
*
* - The divisor cannot be zero.
*/
function mod(uint256 a, uint256 b) internal pure returns (uint256) {
return mod(a, b, "SafeMath: modulo by zero");
}
/**
* @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
* Reverts with custom message when dividing by zero.
*
* Counterpart to Solidity's `%` operator. This function uses a `revert`
* opcode (which leaves remaining gas untouched) while Solidity uses an
* invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
*
* - The divisor cannot be zero.
*/
function mod(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
require(b != 0, errorMessage);
return a % b;
}
} | sub | function sub(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
require(b <= a, errorMessage);
uint256 c = a - b;
return c;
}
| /**
* @dev Returns the subtraction of two unsigned integers, reverting with custom message on
* overflow (when the result is negative).
*
* Counterpart to Solidity's `-` operator.
*
* Requirements:
*
* - Subtraction cannot overflow.
*/ | NatSpecMultiLine | v0.6.12+commit.27d51765 | MIT | ipfs://da9bea1f0f6f0a5e146550ef47bb79e6d7e0ee4d5b464330b11af0c2351c4e00 | {
"func_code_index": [
1162,
1359
]
} | 8,680 |
||
Address | Address.sol | 0xaaf28fc39e0dc1fa4b1c7f02b034f48b211d3792 | Solidity | SafeMath | library SafeMath {
/**
* @dev Returns the addition of two unsigned integers, reverting on
* overflow.
*
* Counterpart to Solidity's `+` operator.
*
* Requirements:
*
* - Addition cannot overflow.
*/
function add(uint256 a, uint256 b) internal pure returns (uint256) {
uint256 c = a + b;
require(c >= a, "SafeMath: addition overflow");
return c;
}
/**
* @dev Returns the subtraction of two unsigned integers, reverting on
* overflow (when the result is negative).
*
* Counterpart to Solidity's `-` operator.
*
* Requirements:
*
* - Subtraction cannot overflow.
*/
function sub(uint256 a, uint256 b) internal pure returns (uint256) {
return sub(a, b, "SafeMath: subtraction overflow");
}
/**
* @dev Returns the subtraction of two unsigned integers, reverting with custom message on
* overflow (when the result is negative).
*
* Counterpart to Solidity's `-` operator.
*
* Requirements:
*
* - Subtraction cannot overflow.
*/
function sub(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
require(b <= a, errorMessage);
uint256 c = a - b;
return c;
}
/**
* @dev Returns the multiplication of two unsigned integers, reverting on
* overflow.
*
* Counterpart to Solidity's `*` operator.
*
* Requirements:
*
* - Multiplication cannot overflow.
*/
function mul(uint256 a, uint256 b) internal pure returns (uint256) {
// Gas optimization: this is cheaper than requiring 'a' not being zero, but the
// benefit is lost if 'b' is also tested.
// See: https://github.com/OpenZeppelin/openzeppelin-contracts/pull/522
if (a == 0) {
return 0;
}
uint256 c = a * b;
require(c / a == b, "SafeMath: multiplication overflow");
return c;
}
/**
* @dev Returns the integer division of two unsigned integers. Reverts on
* division by zero. The result is rounded towards zero.
*
* Counterpart to Solidity's `/` operator. Note: this function uses a
* `revert` opcode (which leaves remaining gas untouched) while Solidity
* uses an invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
*
* - The divisor cannot be zero.
*/
function div(uint256 a, uint256 b) internal pure returns (uint256) {
return div(a, b, "SafeMath: division by zero");
}
/**
* @dev Returns the integer division of two unsigned integers. Reverts with custom message on
* division by zero. The result is rounded towards zero.
*
* Counterpart to Solidity's `/` operator. Note: this function uses a
* `revert` opcode (which leaves remaining gas untouched) while Solidity
* uses an invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
*
* - The divisor cannot be zero.
*/
function div(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
require(b > 0, errorMessage);
uint256 c = a / b;
// assert(a == b * c + a % b); // There is no case in which this doesn't hold
return c;
}
/**
* @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
* Reverts when dividing by zero.
*
* Counterpart to Solidity's `%` operator. This function uses a `revert`
* opcode (which leaves remaining gas untouched) while Solidity uses an
* invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
*
* - The divisor cannot be zero.
*/
function mod(uint256 a, uint256 b) internal pure returns (uint256) {
return mod(a, b, "SafeMath: modulo by zero");
}
/**
* @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
* Reverts with custom message when dividing by zero.
*
* Counterpart to Solidity's `%` operator. This function uses a `revert`
* opcode (which leaves remaining gas untouched) while Solidity uses an
* invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
*
* - The divisor cannot be zero.
*/
function mod(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
require(b != 0, errorMessage);
return a % b;
}
} | mul | function mul(uint256 a, uint256 b) internal pure returns (uint256) {
// Gas optimization: this is cheaper than requiring 'a' not being zero, but the
// benefit is lost if 'b' is also tested.
// See: https://github.com/OpenZeppelin/openzeppelin-contracts/pull/522
if (a == 0) {
return 0;
}
uint256 c = a * b;
require(c / a == b, "SafeMath: multiplication overflow");
return c;
}
| /**
* @dev Returns the multiplication of two unsigned integers, reverting on
* overflow.
*
* Counterpart to Solidity's `*` operator.
*
* Requirements:
*
* - Multiplication cannot overflow.
*/ | NatSpecMultiLine | v0.6.12+commit.27d51765 | MIT | ipfs://da9bea1f0f6f0a5e146550ef47bb79e6d7e0ee4d5b464330b11af0c2351c4e00 | {
"func_code_index": [
1613,
2089
]
} | 8,681 |
||
Address | Address.sol | 0xaaf28fc39e0dc1fa4b1c7f02b034f48b211d3792 | Solidity | SafeMath | library SafeMath {
/**
* @dev Returns the addition of two unsigned integers, reverting on
* overflow.
*
* Counterpart to Solidity's `+` operator.
*
* Requirements:
*
* - Addition cannot overflow.
*/
function add(uint256 a, uint256 b) internal pure returns (uint256) {
uint256 c = a + b;
require(c >= a, "SafeMath: addition overflow");
return c;
}
/**
* @dev Returns the subtraction of two unsigned integers, reverting on
* overflow (when the result is negative).
*
* Counterpart to Solidity's `-` operator.
*
* Requirements:
*
* - Subtraction cannot overflow.
*/
function sub(uint256 a, uint256 b) internal pure returns (uint256) {
return sub(a, b, "SafeMath: subtraction overflow");
}
/**
* @dev Returns the subtraction of two unsigned integers, reverting with custom message on
* overflow (when the result is negative).
*
* Counterpart to Solidity's `-` operator.
*
* Requirements:
*
* - Subtraction cannot overflow.
*/
function sub(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
require(b <= a, errorMessage);
uint256 c = a - b;
return c;
}
/**
* @dev Returns the multiplication of two unsigned integers, reverting on
* overflow.
*
* Counterpart to Solidity's `*` operator.
*
* Requirements:
*
* - Multiplication cannot overflow.
*/
function mul(uint256 a, uint256 b) internal pure returns (uint256) {
// Gas optimization: this is cheaper than requiring 'a' not being zero, but the
// benefit is lost if 'b' is also tested.
// See: https://github.com/OpenZeppelin/openzeppelin-contracts/pull/522
if (a == 0) {
return 0;
}
uint256 c = a * b;
require(c / a == b, "SafeMath: multiplication overflow");
return c;
}
/**
* @dev Returns the integer division of two unsigned integers. Reverts on
* division by zero. The result is rounded towards zero.
*
* Counterpart to Solidity's `/` operator. Note: this function uses a
* `revert` opcode (which leaves remaining gas untouched) while Solidity
* uses an invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
*
* - The divisor cannot be zero.
*/
function div(uint256 a, uint256 b) internal pure returns (uint256) {
return div(a, b, "SafeMath: division by zero");
}
/**
* @dev Returns the integer division of two unsigned integers. Reverts with custom message on
* division by zero. The result is rounded towards zero.
*
* Counterpart to Solidity's `/` operator. Note: this function uses a
* `revert` opcode (which leaves remaining gas untouched) while Solidity
* uses an invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
*
* - The divisor cannot be zero.
*/
function div(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
require(b > 0, errorMessage);
uint256 c = a / b;
// assert(a == b * c + a % b); // There is no case in which this doesn't hold
return c;
}
/**
* @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
* Reverts when dividing by zero.
*
* Counterpart to Solidity's `%` operator. This function uses a `revert`
* opcode (which leaves remaining gas untouched) while Solidity uses an
* invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
*
* - The divisor cannot be zero.
*/
function mod(uint256 a, uint256 b) internal pure returns (uint256) {
return mod(a, b, "SafeMath: modulo by zero");
}
/**
* @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
* Reverts with custom message when dividing by zero.
*
* Counterpart to Solidity's `%` operator. This function uses a `revert`
* opcode (which leaves remaining gas untouched) while Solidity uses an
* invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
*
* - The divisor cannot be zero.
*/
function mod(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
require(b != 0, errorMessage);
return a % b;
}
} | div | function div(uint256 a, uint256 b) internal pure returns (uint256) {
return div(a, b, "SafeMath: division by zero");
}
| /**
* @dev Returns the integer division of two unsigned integers. Reverts on
* division by zero. The result is rounded towards zero.
*
* Counterpart to Solidity's `/` operator. Note: this function uses a
* `revert` opcode (which leaves remaining gas untouched) while Solidity
* uses an invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
*
* - The divisor cannot be zero.
*/ | NatSpecMultiLine | v0.6.12+commit.27d51765 | MIT | ipfs://da9bea1f0f6f0a5e146550ef47bb79e6d7e0ee4d5b464330b11af0c2351c4e00 | {
"func_code_index": [
2560,
2697
]
} | 8,682 |
||
Address | Address.sol | 0xaaf28fc39e0dc1fa4b1c7f02b034f48b211d3792 | Solidity | SafeMath | library SafeMath {
/**
* @dev Returns the addition of two unsigned integers, reverting on
* overflow.
*
* Counterpart to Solidity's `+` operator.
*
* Requirements:
*
* - Addition cannot overflow.
*/
function add(uint256 a, uint256 b) internal pure returns (uint256) {
uint256 c = a + b;
require(c >= a, "SafeMath: addition overflow");
return c;
}
/**
* @dev Returns the subtraction of two unsigned integers, reverting on
* overflow (when the result is negative).
*
* Counterpart to Solidity's `-` operator.
*
* Requirements:
*
* - Subtraction cannot overflow.
*/
function sub(uint256 a, uint256 b) internal pure returns (uint256) {
return sub(a, b, "SafeMath: subtraction overflow");
}
/**
* @dev Returns the subtraction of two unsigned integers, reverting with custom message on
* overflow (when the result is negative).
*
* Counterpart to Solidity's `-` operator.
*
* Requirements:
*
* - Subtraction cannot overflow.
*/
function sub(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
require(b <= a, errorMessage);
uint256 c = a - b;
return c;
}
/**
* @dev Returns the multiplication of two unsigned integers, reverting on
* overflow.
*
* Counterpart to Solidity's `*` operator.
*
* Requirements:
*
* - Multiplication cannot overflow.
*/
function mul(uint256 a, uint256 b) internal pure returns (uint256) {
// Gas optimization: this is cheaper than requiring 'a' not being zero, but the
// benefit is lost if 'b' is also tested.
// See: https://github.com/OpenZeppelin/openzeppelin-contracts/pull/522
if (a == 0) {
return 0;
}
uint256 c = a * b;
require(c / a == b, "SafeMath: multiplication overflow");
return c;
}
/**
* @dev Returns the integer division of two unsigned integers. Reverts on
* division by zero. The result is rounded towards zero.
*
* Counterpart to Solidity's `/` operator. Note: this function uses a
* `revert` opcode (which leaves remaining gas untouched) while Solidity
* uses an invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
*
* - The divisor cannot be zero.
*/
function div(uint256 a, uint256 b) internal pure returns (uint256) {
return div(a, b, "SafeMath: division by zero");
}
/**
* @dev Returns the integer division of two unsigned integers. Reverts with custom message on
* division by zero. The result is rounded towards zero.
*
* Counterpart to Solidity's `/` operator. Note: this function uses a
* `revert` opcode (which leaves remaining gas untouched) while Solidity
* uses an invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
*
* - The divisor cannot be zero.
*/
function div(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
require(b > 0, errorMessage);
uint256 c = a / b;
// assert(a == b * c + a % b); // There is no case in which this doesn't hold
return c;
}
/**
* @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
* Reverts when dividing by zero.
*
* Counterpart to Solidity's `%` operator. This function uses a `revert`
* opcode (which leaves remaining gas untouched) while Solidity uses an
* invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
*
* - The divisor cannot be zero.
*/
function mod(uint256 a, uint256 b) internal pure returns (uint256) {
return mod(a, b, "SafeMath: modulo by zero");
}
/**
* @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
* Reverts with custom message when dividing by zero.
*
* Counterpart to Solidity's `%` operator. This function uses a `revert`
* opcode (which leaves remaining gas untouched) while Solidity uses an
* invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
*
* - The divisor cannot be zero.
*/
function mod(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
require(b != 0, errorMessage);
return a % b;
}
} | div | function div(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
require(b > 0, errorMessage);
uint256 c = a / b;
// assert(a == b * c + a % b); // There is no case in which this doesn't hold
return c;
}
| /**
* @dev Returns the integer division of two unsigned integers. Reverts with custom message on
* division by zero. The result is rounded towards zero.
*
* Counterpart to Solidity's `/` operator. Note: this function uses a
* `revert` opcode (which leaves remaining gas untouched) while Solidity
* uses an invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
*
* - The divisor cannot be zero.
*/ | NatSpecMultiLine | v0.6.12+commit.27d51765 | MIT | ipfs://da9bea1f0f6f0a5e146550ef47bb79e6d7e0ee4d5b464330b11af0c2351c4e00 | {
"func_code_index": [
3188,
3471
]
} | 8,683 |
||
Address | Address.sol | 0xaaf28fc39e0dc1fa4b1c7f02b034f48b211d3792 | Solidity | SafeMath | library SafeMath {
/**
* @dev Returns the addition of two unsigned integers, reverting on
* overflow.
*
* Counterpart to Solidity's `+` operator.
*
* Requirements:
*
* - Addition cannot overflow.
*/
function add(uint256 a, uint256 b) internal pure returns (uint256) {
uint256 c = a + b;
require(c >= a, "SafeMath: addition overflow");
return c;
}
/**
* @dev Returns the subtraction of two unsigned integers, reverting on
* overflow (when the result is negative).
*
* Counterpart to Solidity's `-` operator.
*
* Requirements:
*
* - Subtraction cannot overflow.
*/
function sub(uint256 a, uint256 b) internal pure returns (uint256) {
return sub(a, b, "SafeMath: subtraction overflow");
}
/**
* @dev Returns the subtraction of two unsigned integers, reverting with custom message on
* overflow (when the result is negative).
*
* Counterpart to Solidity's `-` operator.
*
* Requirements:
*
* - Subtraction cannot overflow.
*/
function sub(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
require(b <= a, errorMessage);
uint256 c = a - b;
return c;
}
/**
* @dev Returns the multiplication of two unsigned integers, reverting on
* overflow.
*
* Counterpart to Solidity's `*` operator.
*
* Requirements:
*
* - Multiplication cannot overflow.
*/
function mul(uint256 a, uint256 b) internal pure returns (uint256) {
// Gas optimization: this is cheaper than requiring 'a' not being zero, but the
// benefit is lost if 'b' is also tested.
// See: https://github.com/OpenZeppelin/openzeppelin-contracts/pull/522
if (a == 0) {
return 0;
}
uint256 c = a * b;
require(c / a == b, "SafeMath: multiplication overflow");
return c;
}
/**
* @dev Returns the integer division of two unsigned integers. Reverts on
* division by zero. The result is rounded towards zero.
*
* Counterpart to Solidity's `/` operator. Note: this function uses a
* `revert` opcode (which leaves remaining gas untouched) while Solidity
* uses an invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
*
* - The divisor cannot be zero.
*/
function div(uint256 a, uint256 b) internal pure returns (uint256) {
return div(a, b, "SafeMath: division by zero");
}
/**
* @dev Returns the integer division of two unsigned integers. Reverts with custom message on
* division by zero. The result is rounded towards zero.
*
* Counterpart to Solidity's `/` operator. Note: this function uses a
* `revert` opcode (which leaves remaining gas untouched) while Solidity
* uses an invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
*
* - The divisor cannot be zero.
*/
function div(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
require(b > 0, errorMessage);
uint256 c = a / b;
// assert(a == b * c + a % b); // There is no case in which this doesn't hold
return c;
}
/**
* @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
* Reverts when dividing by zero.
*
* Counterpart to Solidity's `%` operator. This function uses a `revert`
* opcode (which leaves remaining gas untouched) while Solidity uses an
* invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
*
* - The divisor cannot be zero.
*/
function mod(uint256 a, uint256 b) internal pure returns (uint256) {
return mod(a, b, "SafeMath: modulo by zero");
}
/**
* @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
* Reverts with custom message when dividing by zero.
*
* Counterpart to Solidity's `%` operator. This function uses a `revert`
* opcode (which leaves remaining gas untouched) while Solidity uses an
* invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
*
* - The divisor cannot be zero.
*/
function mod(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
require(b != 0, errorMessage);
return a % b;
}
} | mod | function mod(uint256 a, uint256 b) internal pure returns (uint256) {
return mod(a, b, "SafeMath: modulo by zero");
}
| /**
* @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
* Reverts when dividing by zero.
*
* Counterpart to Solidity's `%` operator. This function uses a `revert`
* opcode (which leaves remaining gas untouched) while Solidity uses an
* invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
*
* - The divisor cannot be zero.
*/ | NatSpecMultiLine | v0.6.12+commit.27d51765 | MIT | ipfs://da9bea1f0f6f0a5e146550ef47bb79e6d7e0ee4d5b464330b11af0c2351c4e00 | {
"func_code_index": [
3931,
4066
]
} | 8,684 |
||
Address | Address.sol | 0xaaf28fc39e0dc1fa4b1c7f02b034f48b211d3792 | Solidity | SafeMath | library SafeMath {
/**
* @dev Returns the addition of two unsigned integers, reverting on
* overflow.
*
* Counterpart to Solidity's `+` operator.
*
* Requirements:
*
* - Addition cannot overflow.
*/
function add(uint256 a, uint256 b) internal pure returns (uint256) {
uint256 c = a + b;
require(c >= a, "SafeMath: addition overflow");
return c;
}
/**
* @dev Returns the subtraction of two unsigned integers, reverting on
* overflow (when the result is negative).
*
* Counterpart to Solidity's `-` operator.
*
* Requirements:
*
* - Subtraction cannot overflow.
*/
function sub(uint256 a, uint256 b) internal pure returns (uint256) {
return sub(a, b, "SafeMath: subtraction overflow");
}
/**
* @dev Returns the subtraction of two unsigned integers, reverting with custom message on
* overflow (when the result is negative).
*
* Counterpart to Solidity's `-` operator.
*
* Requirements:
*
* - Subtraction cannot overflow.
*/
function sub(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
require(b <= a, errorMessage);
uint256 c = a - b;
return c;
}
/**
* @dev Returns the multiplication of two unsigned integers, reverting on
* overflow.
*
* Counterpart to Solidity's `*` operator.
*
* Requirements:
*
* - Multiplication cannot overflow.
*/
function mul(uint256 a, uint256 b) internal pure returns (uint256) {
// Gas optimization: this is cheaper than requiring 'a' not being zero, but the
// benefit is lost if 'b' is also tested.
// See: https://github.com/OpenZeppelin/openzeppelin-contracts/pull/522
if (a == 0) {
return 0;
}
uint256 c = a * b;
require(c / a == b, "SafeMath: multiplication overflow");
return c;
}
/**
* @dev Returns the integer division of two unsigned integers. Reverts on
* division by zero. The result is rounded towards zero.
*
* Counterpart to Solidity's `/` operator. Note: this function uses a
* `revert` opcode (which leaves remaining gas untouched) while Solidity
* uses an invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
*
* - The divisor cannot be zero.
*/
function div(uint256 a, uint256 b) internal pure returns (uint256) {
return div(a, b, "SafeMath: division by zero");
}
/**
* @dev Returns the integer division of two unsigned integers. Reverts with custom message on
* division by zero. The result is rounded towards zero.
*
* Counterpart to Solidity's `/` operator. Note: this function uses a
* `revert` opcode (which leaves remaining gas untouched) while Solidity
* uses an invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
*
* - The divisor cannot be zero.
*/
function div(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
require(b > 0, errorMessage);
uint256 c = a / b;
// assert(a == b * c + a % b); // There is no case in which this doesn't hold
return c;
}
/**
* @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
* Reverts when dividing by zero.
*
* Counterpart to Solidity's `%` operator. This function uses a `revert`
* opcode (which leaves remaining gas untouched) while Solidity uses an
* invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
*
* - The divisor cannot be zero.
*/
function mod(uint256 a, uint256 b) internal pure returns (uint256) {
return mod(a, b, "SafeMath: modulo by zero");
}
/**
* @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
* Reverts with custom message when dividing by zero.
*
* Counterpart to Solidity's `%` operator. This function uses a `revert`
* opcode (which leaves remaining gas untouched) while Solidity uses an
* invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
*
* - The divisor cannot be zero.
*/
function mod(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
require(b != 0, errorMessage);
return a % b;
}
} | mod | function mod(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
require(b != 0, errorMessage);
return a % b;
}
| /**
* @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
* Reverts with custom message when dividing by zero.
*
* Counterpart to Solidity's `%` operator. This function uses a `revert`
* opcode (which leaves remaining gas untouched) while Solidity uses an
* invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
*
* - The divisor cannot be zero.
*/ | NatSpecMultiLine | v0.6.12+commit.27d51765 | MIT | ipfs://da9bea1f0f6f0a5e146550ef47bb79e6d7e0ee4d5b464330b11af0c2351c4e00 | {
"func_code_index": [
4546,
4717
]
} | 8,685 |
||
Address | Address.sol | 0xaaf28fc39e0dc1fa4b1c7f02b034f48b211d3792 | Solidity | Address | library Address {
/**
* @dev Returns true if `account` is a contract.
*
* [IMPORTANT]
* ====
* It is unsafe to assume that an address for which this function returns
* false is an externally-owned account (EOA) and not a contract.
*
* Among others, `isContract` will return false for the following
* types of addresses:
*
* - an externally-owned account
* - a contract in construction
* - an address where a contract will be created
* - an address where a contract lived, but was destroyed
* ====
*/
function isContract(address account) internal view returns (bool) {
// According to EIP-1052, 0x0 is the value returned for not-yet created accounts
// and 0xc5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470 is returned
// for accounts without code, i.e. `keccak256('')`
bytes32 codehash;
bytes32 accountHash = 0xc5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470;
// solhint-disable-next-line no-inline-assembly
assembly { codehash := extcodehash(account) }
return (codehash != accountHash && codehash != 0x0);
}
/**
* @dev Replacement for Solidity's `transfer`: sends `amount` wei to
* `recipient`, forwarding all available gas and reverting on errors.
*
* https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost
* of certain opcodes, possibly making contracts go over the 2300 gas limit
* imposed by `transfer`, making them unable to receive funds via
* `transfer`. {sendValue} removes this limitation.
*
* https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more].
*
* IMPORTANT: because control is transferred to `recipient`, care must be
* taken to not create reentrancy vulnerabilities. Consider using
* {ReentrancyGuard} or the
* https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern].
*/
function sendValue(address payable recipient, uint256 amount) internal {
require(address(this).balance >= amount, "Address: insufficient balance");
// solhint-disable-next-line avoid-low-level-calls, avoid-call-value
(bool success, ) = recipient.call{ value: amount }("");
require(success, "Address: unable to send value, recipient may have reverted");
}
/**
* @dev Performs a Solidity function call using a low level `call`. A
* plain`call` is an unsafe replacement for a function call: use this
* function instead.
*
* If `target` reverts with a revert reason, it is bubbled up by this
* function (like regular Solidity function calls).
*
* Returns the raw returned data. To convert to the expected return value,
* use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`].
*
* Requirements:
*
* - `target` must be a contract.
* - calling `target` with `data` must not revert.
*
* _Available since v3.1._
*/
function functionCall(address target, bytes memory data) internal returns (bytes memory) {
return functionCall(target, data, "Address: low-level call failed");
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with
* `errorMessage` as a fallback revert reason when `target` reverts.
*
* _Available since v3.1._
*/
function functionCall(address target, bytes memory data, string memory errorMessage) internal returns (bytes memory) {
return _functionCallWithValue(target, data, 0, errorMessage);
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
* but also transferring `value` wei to `target`.
*
* Requirements:
*
* - the calling contract must have an ETH balance of at least `value`.
* - the called Solidity function must be `payable`.
*
* _Available since v3.1._
*/
function functionCallWithValue(address target, bytes memory data, uint256 value) internal returns (bytes memory) {
return functionCallWithValue(target, data, value, "Address: low-level call with value failed");
}
/**
* @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but
* with `errorMessage` as a fallback revert reason when `target` reverts.
*
* _Available since v3.1._
*/
function functionCallWithValue(address target, bytes memory data, uint256 value, string memory errorMessage) internal returns (bytes memory) {
require(address(this).balance >= value, "Address: insufficient balance for call");
return _functionCallWithValue(target, data, value, errorMessage);
}
function _functionCallWithValue(address target, bytes memory data, uint256 weiValue, string memory errorMessage) private returns (bytes memory) {
require(isContract(target), "Address: call to non-contract");
// solhint-disable-next-line avoid-low-level-calls
(bool success, bytes memory returndata) = target.call{ value: weiValue }(data);
if (success) {
return returndata;
} else {
// Look for revert reason and bubble it up if present
if (returndata.length > 0) {
// The easiest way to bubble the revert reason is using memory via assembly
// solhint-disable-next-line no-inline-assembly
assembly {
let returndata_size := mload(returndata)
revert(add(32, returndata), returndata_size)
}
} else {
revert(errorMessage);
}
}
}
} | isContract | function isContract(address account) internal view returns (bool) {
// According to EIP-1052, 0x0 is the value returned for not-yet created accounts
// and 0xc5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470 is returned
// for accounts without code, i.e. `keccak256('')`
bytes32 codehash;
bytes32 accountHash = 0xc5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470;
// solhint-disable-next-line no-inline-assembly
assembly { codehash := extcodehash(account) }
return (codehash != accountHash && codehash != 0x0);
}
| /**
* @dev Returns true if `account` is a contract.
*
* [IMPORTANT]
* ====
* It is unsafe to assume that an address for which this function returns
* false is an externally-owned account (EOA) and not a contract.
*
* Among others, `isContract` will return false for the following
* types of addresses:
*
* - an externally-owned account
* - a contract in construction
* - an address where a contract will be created
* - an address where a contract lived, but was destroyed
* ====
*/ | NatSpecMultiLine | v0.6.12+commit.27d51765 | MIT | ipfs://da9bea1f0f6f0a5e146550ef47bb79e6d7e0ee4d5b464330b11af0c2351c4e00 | {
"func_code_index": [
606,
1230
]
} | 8,686 |
||
Address | Address.sol | 0xaaf28fc39e0dc1fa4b1c7f02b034f48b211d3792 | Solidity | Address | library Address {
/**
* @dev Returns true if `account` is a contract.
*
* [IMPORTANT]
* ====
* It is unsafe to assume that an address for which this function returns
* false is an externally-owned account (EOA) and not a contract.
*
* Among others, `isContract` will return false for the following
* types of addresses:
*
* - an externally-owned account
* - a contract in construction
* - an address where a contract will be created
* - an address where a contract lived, but was destroyed
* ====
*/
function isContract(address account) internal view returns (bool) {
// According to EIP-1052, 0x0 is the value returned for not-yet created accounts
// and 0xc5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470 is returned
// for accounts without code, i.e. `keccak256('')`
bytes32 codehash;
bytes32 accountHash = 0xc5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470;
// solhint-disable-next-line no-inline-assembly
assembly { codehash := extcodehash(account) }
return (codehash != accountHash && codehash != 0x0);
}
/**
* @dev Replacement for Solidity's `transfer`: sends `amount` wei to
* `recipient`, forwarding all available gas and reverting on errors.
*
* https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost
* of certain opcodes, possibly making contracts go over the 2300 gas limit
* imposed by `transfer`, making them unable to receive funds via
* `transfer`. {sendValue} removes this limitation.
*
* https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more].
*
* IMPORTANT: because control is transferred to `recipient`, care must be
* taken to not create reentrancy vulnerabilities. Consider using
* {ReentrancyGuard} or the
* https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern].
*/
function sendValue(address payable recipient, uint256 amount) internal {
require(address(this).balance >= amount, "Address: insufficient balance");
// solhint-disable-next-line avoid-low-level-calls, avoid-call-value
(bool success, ) = recipient.call{ value: amount }("");
require(success, "Address: unable to send value, recipient may have reverted");
}
/**
* @dev Performs a Solidity function call using a low level `call`. A
* plain`call` is an unsafe replacement for a function call: use this
* function instead.
*
* If `target` reverts with a revert reason, it is bubbled up by this
* function (like regular Solidity function calls).
*
* Returns the raw returned data. To convert to the expected return value,
* use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`].
*
* Requirements:
*
* - `target` must be a contract.
* - calling `target` with `data` must not revert.
*
* _Available since v3.1._
*/
function functionCall(address target, bytes memory data) internal returns (bytes memory) {
return functionCall(target, data, "Address: low-level call failed");
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with
* `errorMessage` as a fallback revert reason when `target` reverts.
*
* _Available since v3.1._
*/
function functionCall(address target, bytes memory data, string memory errorMessage) internal returns (bytes memory) {
return _functionCallWithValue(target, data, 0, errorMessage);
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
* but also transferring `value` wei to `target`.
*
* Requirements:
*
* - the calling contract must have an ETH balance of at least `value`.
* - the called Solidity function must be `payable`.
*
* _Available since v3.1._
*/
function functionCallWithValue(address target, bytes memory data, uint256 value) internal returns (bytes memory) {
return functionCallWithValue(target, data, value, "Address: low-level call with value failed");
}
/**
* @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but
* with `errorMessage` as a fallback revert reason when `target` reverts.
*
* _Available since v3.1._
*/
function functionCallWithValue(address target, bytes memory data, uint256 value, string memory errorMessage) internal returns (bytes memory) {
require(address(this).balance >= value, "Address: insufficient balance for call");
return _functionCallWithValue(target, data, value, errorMessage);
}
function _functionCallWithValue(address target, bytes memory data, uint256 weiValue, string memory errorMessage) private returns (bytes memory) {
require(isContract(target), "Address: call to non-contract");
// solhint-disable-next-line avoid-low-level-calls
(bool success, bytes memory returndata) = target.call{ value: weiValue }(data);
if (success) {
return returndata;
} else {
// Look for revert reason and bubble it up if present
if (returndata.length > 0) {
// The easiest way to bubble the revert reason is using memory via assembly
// solhint-disable-next-line no-inline-assembly
assembly {
let returndata_size := mload(returndata)
revert(add(32, returndata), returndata_size)
}
} else {
revert(errorMessage);
}
}
}
} | sendValue | function sendValue(address payable recipient, uint256 amount) internal {
require(address(this).balance >= amount, "Address: insufficient balance");
// solhint-disable-next-line avoid-low-level-calls, avoid-call-value
(bool success, ) = recipient.call{ value: amount }("");
require(success, "Address: unable to send value, recipient may have reverted");
}
| /**
* @dev Replacement for Solidity's `transfer`: sends `amount` wei to
* `recipient`, forwarding all available gas and reverting on errors.
*
* https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost
* of certain opcodes, possibly making contracts go over the 2300 gas limit
* imposed by `transfer`, making them unable to receive funds via
* `transfer`. {sendValue} removes this limitation.
*
* https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more].
*
* IMPORTANT: because control is transferred to `recipient`, care must be
* taken to not create reentrancy vulnerabilities. Consider using
* {ReentrancyGuard} or the
* https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern].
*/ | NatSpecMultiLine | v0.6.12+commit.27d51765 | MIT | ipfs://da9bea1f0f6f0a5e146550ef47bb79e6d7e0ee4d5b464330b11af0c2351c4e00 | {
"func_code_index": [
2160,
2562
]
} | 8,687 |
||
Address | Address.sol | 0xaaf28fc39e0dc1fa4b1c7f02b034f48b211d3792 | Solidity | Address | library Address {
/**
* @dev Returns true if `account` is a contract.
*
* [IMPORTANT]
* ====
* It is unsafe to assume that an address for which this function returns
* false is an externally-owned account (EOA) and not a contract.
*
* Among others, `isContract` will return false for the following
* types of addresses:
*
* - an externally-owned account
* - a contract in construction
* - an address where a contract will be created
* - an address where a contract lived, but was destroyed
* ====
*/
function isContract(address account) internal view returns (bool) {
// According to EIP-1052, 0x0 is the value returned for not-yet created accounts
// and 0xc5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470 is returned
// for accounts without code, i.e. `keccak256('')`
bytes32 codehash;
bytes32 accountHash = 0xc5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470;
// solhint-disable-next-line no-inline-assembly
assembly { codehash := extcodehash(account) }
return (codehash != accountHash && codehash != 0x0);
}
/**
* @dev Replacement for Solidity's `transfer`: sends `amount` wei to
* `recipient`, forwarding all available gas and reverting on errors.
*
* https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost
* of certain opcodes, possibly making contracts go over the 2300 gas limit
* imposed by `transfer`, making them unable to receive funds via
* `transfer`. {sendValue} removes this limitation.
*
* https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more].
*
* IMPORTANT: because control is transferred to `recipient`, care must be
* taken to not create reentrancy vulnerabilities. Consider using
* {ReentrancyGuard} or the
* https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern].
*/
function sendValue(address payable recipient, uint256 amount) internal {
require(address(this).balance >= amount, "Address: insufficient balance");
// solhint-disable-next-line avoid-low-level-calls, avoid-call-value
(bool success, ) = recipient.call{ value: amount }("");
require(success, "Address: unable to send value, recipient may have reverted");
}
/**
* @dev Performs a Solidity function call using a low level `call`. A
* plain`call` is an unsafe replacement for a function call: use this
* function instead.
*
* If `target` reverts with a revert reason, it is bubbled up by this
* function (like regular Solidity function calls).
*
* Returns the raw returned data. To convert to the expected return value,
* use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`].
*
* Requirements:
*
* - `target` must be a contract.
* - calling `target` with `data` must not revert.
*
* _Available since v3.1._
*/
function functionCall(address target, bytes memory data) internal returns (bytes memory) {
return functionCall(target, data, "Address: low-level call failed");
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with
* `errorMessage` as a fallback revert reason when `target` reverts.
*
* _Available since v3.1._
*/
function functionCall(address target, bytes memory data, string memory errorMessage) internal returns (bytes memory) {
return _functionCallWithValue(target, data, 0, errorMessage);
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
* but also transferring `value` wei to `target`.
*
* Requirements:
*
* - the calling contract must have an ETH balance of at least `value`.
* - the called Solidity function must be `payable`.
*
* _Available since v3.1._
*/
function functionCallWithValue(address target, bytes memory data, uint256 value) internal returns (bytes memory) {
return functionCallWithValue(target, data, value, "Address: low-level call with value failed");
}
/**
* @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but
* with `errorMessage` as a fallback revert reason when `target` reverts.
*
* _Available since v3.1._
*/
function functionCallWithValue(address target, bytes memory data, uint256 value, string memory errorMessage) internal returns (bytes memory) {
require(address(this).balance >= value, "Address: insufficient balance for call");
return _functionCallWithValue(target, data, value, errorMessage);
}
function _functionCallWithValue(address target, bytes memory data, uint256 weiValue, string memory errorMessage) private returns (bytes memory) {
require(isContract(target), "Address: call to non-contract");
// solhint-disable-next-line avoid-low-level-calls
(bool success, bytes memory returndata) = target.call{ value: weiValue }(data);
if (success) {
return returndata;
} else {
// Look for revert reason and bubble it up if present
if (returndata.length > 0) {
// The easiest way to bubble the revert reason is using memory via assembly
// solhint-disable-next-line no-inline-assembly
assembly {
let returndata_size := mload(returndata)
revert(add(32, returndata), returndata_size)
}
} else {
revert(errorMessage);
}
}
}
} | functionCall | function functionCall(address target, bytes memory data) internal returns (bytes memory) {
return functionCall(target, data, "Address: low-level call failed");
}
| /**
* @dev Performs a Solidity function call using a low level `call`. A
* plain`call` is an unsafe replacement for a function call: use this
* function instead.
*
* If `target` reverts with a revert reason, it is bubbled up by this
* function (like regular Solidity function calls).
*
* Returns the raw returned data. To convert to the expected return value,
* use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`].
*
* Requirements:
*
* - `target` must be a contract.
* - calling `target` with `data` must not revert.
*
* _Available since v3.1._
*/ | NatSpecMultiLine | v0.6.12+commit.27d51765 | MIT | ipfs://da9bea1f0f6f0a5e146550ef47bb79e6d7e0ee4d5b464330b11af0c2351c4e00 | {
"func_code_index": [
3318,
3496
]
} | 8,688 |
||
Address | Address.sol | 0xaaf28fc39e0dc1fa4b1c7f02b034f48b211d3792 | Solidity | Address | library Address {
/**
* @dev Returns true if `account` is a contract.
*
* [IMPORTANT]
* ====
* It is unsafe to assume that an address for which this function returns
* false is an externally-owned account (EOA) and not a contract.
*
* Among others, `isContract` will return false for the following
* types of addresses:
*
* - an externally-owned account
* - a contract in construction
* - an address where a contract will be created
* - an address where a contract lived, but was destroyed
* ====
*/
function isContract(address account) internal view returns (bool) {
// According to EIP-1052, 0x0 is the value returned for not-yet created accounts
// and 0xc5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470 is returned
// for accounts without code, i.e. `keccak256('')`
bytes32 codehash;
bytes32 accountHash = 0xc5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470;
// solhint-disable-next-line no-inline-assembly
assembly { codehash := extcodehash(account) }
return (codehash != accountHash && codehash != 0x0);
}
/**
* @dev Replacement for Solidity's `transfer`: sends `amount` wei to
* `recipient`, forwarding all available gas and reverting on errors.
*
* https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost
* of certain opcodes, possibly making contracts go over the 2300 gas limit
* imposed by `transfer`, making them unable to receive funds via
* `transfer`. {sendValue} removes this limitation.
*
* https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more].
*
* IMPORTANT: because control is transferred to `recipient`, care must be
* taken to not create reentrancy vulnerabilities. Consider using
* {ReentrancyGuard} or the
* https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern].
*/
function sendValue(address payable recipient, uint256 amount) internal {
require(address(this).balance >= amount, "Address: insufficient balance");
// solhint-disable-next-line avoid-low-level-calls, avoid-call-value
(bool success, ) = recipient.call{ value: amount }("");
require(success, "Address: unable to send value, recipient may have reverted");
}
/**
* @dev Performs a Solidity function call using a low level `call`. A
* plain`call` is an unsafe replacement for a function call: use this
* function instead.
*
* If `target` reverts with a revert reason, it is bubbled up by this
* function (like regular Solidity function calls).
*
* Returns the raw returned data. To convert to the expected return value,
* use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`].
*
* Requirements:
*
* - `target` must be a contract.
* - calling `target` with `data` must not revert.
*
* _Available since v3.1._
*/
function functionCall(address target, bytes memory data) internal returns (bytes memory) {
return functionCall(target, data, "Address: low-level call failed");
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with
* `errorMessage` as a fallback revert reason when `target` reverts.
*
* _Available since v3.1._
*/
function functionCall(address target, bytes memory data, string memory errorMessage) internal returns (bytes memory) {
return _functionCallWithValue(target, data, 0, errorMessage);
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
* but also transferring `value` wei to `target`.
*
* Requirements:
*
* - the calling contract must have an ETH balance of at least `value`.
* - the called Solidity function must be `payable`.
*
* _Available since v3.1._
*/
function functionCallWithValue(address target, bytes memory data, uint256 value) internal returns (bytes memory) {
return functionCallWithValue(target, data, value, "Address: low-level call with value failed");
}
/**
* @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but
* with `errorMessage` as a fallback revert reason when `target` reverts.
*
* _Available since v3.1._
*/
function functionCallWithValue(address target, bytes memory data, uint256 value, string memory errorMessage) internal returns (bytes memory) {
require(address(this).balance >= value, "Address: insufficient balance for call");
return _functionCallWithValue(target, data, value, errorMessage);
}
function _functionCallWithValue(address target, bytes memory data, uint256 weiValue, string memory errorMessage) private returns (bytes memory) {
require(isContract(target), "Address: call to non-contract");
// solhint-disable-next-line avoid-low-level-calls
(bool success, bytes memory returndata) = target.call{ value: weiValue }(data);
if (success) {
return returndata;
} else {
// Look for revert reason and bubble it up if present
if (returndata.length > 0) {
// The easiest way to bubble the revert reason is using memory via assembly
// solhint-disable-next-line no-inline-assembly
assembly {
let returndata_size := mload(returndata)
revert(add(32, returndata), returndata_size)
}
} else {
revert(errorMessage);
}
}
}
} | functionCall | function functionCall(address target, bytes memory data, string memory errorMessage) internal returns (bytes memory) {
return _functionCallWithValue(target, data, 0, errorMessage);
}
| /**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with
* `errorMessage` as a fallback revert reason when `target` reverts.
*
* _Available since v3.1._
*/ | NatSpecMultiLine | v0.6.12+commit.27d51765 | MIT | ipfs://da9bea1f0f6f0a5e146550ef47bb79e6d7e0ee4d5b464330b11af0c2351c4e00 | {
"func_code_index": [
3721,
3922
]
} | 8,689 |
||
Address | Address.sol | 0xaaf28fc39e0dc1fa4b1c7f02b034f48b211d3792 | Solidity | Address | library Address {
/**
* @dev Returns true if `account` is a contract.
*
* [IMPORTANT]
* ====
* It is unsafe to assume that an address for which this function returns
* false is an externally-owned account (EOA) and not a contract.
*
* Among others, `isContract` will return false for the following
* types of addresses:
*
* - an externally-owned account
* - a contract in construction
* - an address where a contract will be created
* - an address where a contract lived, but was destroyed
* ====
*/
function isContract(address account) internal view returns (bool) {
// According to EIP-1052, 0x0 is the value returned for not-yet created accounts
// and 0xc5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470 is returned
// for accounts without code, i.e. `keccak256('')`
bytes32 codehash;
bytes32 accountHash = 0xc5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470;
// solhint-disable-next-line no-inline-assembly
assembly { codehash := extcodehash(account) }
return (codehash != accountHash && codehash != 0x0);
}
/**
* @dev Replacement for Solidity's `transfer`: sends `amount` wei to
* `recipient`, forwarding all available gas and reverting on errors.
*
* https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost
* of certain opcodes, possibly making contracts go over the 2300 gas limit
* imposed by `transfer`, making them unable to receive funds via
* `transfer`. {sendValue} removes this limitation.
*
* https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more].
*
* IMPORTANT: because control is transferred to `recipient`, care must be
* taken to not create reentrancy vulnerabilities. Consider using
* {ReentrancyGuard} or the
* https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern].
*/
function sendValue(address payable recipient, uint256 amount) internal {
require(address(this).balance >= amount, "Address: insufficient balance");
// solhint-disable-next-line avoid-low-level-calls, avoid-call-value
(bool success, ) = recipient.call{ value: amount }("");
require(success, "Address: unable to send value, recipient may have reverted");
}
/**
* @dev Performs a Solidity function call using a low level `call`. A
* plain`call` is an unsafe replacement for a function call: use this
* function instead.
*
* If `target` reverts with a revert reason, it is bubbled up by this
* function (like regular Solidity function calls).
*
* Returns the raw returned data. To convert to the expected return value,
* use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`].
*
* Requirements:
*
* - `target` must be a contract.
* - calling `target` with `data` must not revert.
*
* _Available since v3.1._
*/
function functionCall(address target, bytes memory data) internal returns (bytes memory) {
return functionCall(target, data, "Address: low-level call failed");
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with
* `errorMessage` as a fallback revert reason when `target` reverts.
*
* _Available since v3.1._
*/
function functionCall(address target, bytes memory data, string memory errorMessage) internal returns (bytes memory) {
return _functionCallWithValue(target, data, 0, errorMessage);
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
* but also transferring `value` wei to `target`.
*
* Requirements:
*
* - the calling contract must have an ETH balance of at least `value`.
* - the called Solidity function must be `payable`.
*
* _Available since v3.1._
*/
function functionCallWithValue(address target, bytes memory data, uint256 value) internal returns (bytes memory) {
return functionCallWithValue(target, data, value, "Address: low-level call with value failed");
}
/**
* @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but
* with `errorMessage` as a fallback revert reason when `target` reverts.
*
* _Available since v3.1._
*/
function functionCallWithValue(address target, bytes memory data, uint256 value, string memory errorMessage) internal returns (bytes memory) {
require(address(this).balance >= value, "Address: insufficient balance for call");
return _functionCallWithValue(target, data, value, errorMessage);
}
function _functionCallWithValue(address target, bytes memory data, uint256 weiValue, string memory errorMessage) private returns (bytes memory) {
require(isContract(target), "Address: call to non-contract");
// solhint-disable-next-line avoid-low-level-calls
(bool success, bytes memory returndata) = target.call{ value: weiValue }(data);
if (success) {
return returndata;
} else {
// Look for revert reason and bubble it up if present
if (returndata.length > 0) {
// The easiest way to bubble the revert reason is using memory via assembly
// solhint-disable-next-line no-inline-assembly
assembly {
let returndata_size := mload(returndata)
revert(add(32, returndata), returndata_size)
}
} else {
revert(errorMessage);
}
}
}
} | functionCallWithValue | function functionCallWithValue(address target, bytes memory data, uint256 value) internal returns (bytes memory) {
return functionCallWithValue(target, data, value, "Address: low-level call with value failed");
}
| /**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
* but also transferring `value` wei to `target`.
*
* Requirements:
*
* - the calling contract must have an ETH balance of at least `value`.
* - the called Solidity function must be `payable`.
*
* _Available since v3.1._
*/ | NatSpecMultiLine | v0.6.12+commit.27d51765 | MIT | ipfs://da9bea1f0f6f0a5e146550ef47bb79e6d7e0ee4d5b464330b11af0c2351c4e00 | {
"func_code_index": [
4292,
4523
]
} | 8,690 |
||
Address | Address.sol | 0xaaf28fc39e0dc1fa4b1c7f02b034f48b211d3792 | Solidity | Address | library Address {
/**
* @dev Returns true if `account` is a contract.
*
* [IMPORTANT]
* ====
* It is unsafe to assume that an address for which this function returns
* false is an externally-owned account (EOA) and not a contract.
*
* Among others, `isContract` will return false for the following
* types of addresses:
*
* - an externally-owned account
* - a contract in construction
* - an address where a contract will be created
* - an address where a contract lived, but was destroyed
* ====
*/
function isContract(address account) internal view returns (bool) {
// According to EIP-1052, 0x0 is the value returned for not-yet created accounts
// and 0xc5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470 is returned
// for accounts without code, i.e. `keccak256('')`
bytes32 codehash;
bytes32 accountHash = 0xc5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470;
// solhint-disable-next-line no-inline-assembly
assembly { codehash := extcodehash(account) }
return (codehash != accountHash && codehash != 0x0);
}
/**
* @dev Replacement for Solidity's `transfer`: sends `amount` wei to
* `recipient`, forwarding all available gas and reverting on errors.
*
* https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost
* of certain opcodes, possibly making contracts go over the 2300 gas limit
* imposed by `transfer`, making them unable to receive funds via
* `transfer`. {sendValue} removes this limitation.
*
* https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more].
*
* IMPORTANT: because control is transferred to `recipient`, care must be
* taken to not create reentrancy vulnerabilities. Consider using
* {ReentrancyGuard} or the
* https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern].
*/
function sendValue(address payable recipient, uint256 amount) internal {
require(address(this).balance >= amount, "Address: insufficient balance");
// solhint-disable-next-line avoid-low-level-calls, avoid-call-value
(bool success, ) = recipient.call{ value: amount }("");
require(success, "Address: unable to send value, recipient may have reverted");
}
/**
* @dev Performs a Solidity function call using a low level `call`. A
* plain`call` is an unsafe replacement for a function call: use this
* function instead.
*
* If `target` reverts with a revert reason, it is bubbled up by this
* function (like regular Solidity function calls).
*
* Returns the raw returned data. To convert to the expected return value,
* use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`].
*
* Requirements:
*
* - `target` must be a contract.
* - calling `target` with `data` must not revert.
*
* _Available since v3.1._
*/
function functionCall(address target, bytes memory data) internal returns (bytes memory) {
return functionCall(target, data, "Address: low-level call failed");
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with
* `errorMessage` as a fallback revert reason when `target` reverts.
*
* _Available since v3.1._
*/
function functionCall(address target, bytes memory data, string memory errorMessage) internal returns (bytes memory) {
return _functionCallWithValue(target, data, 0, errorMessage);
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
* but also transferring `value` wei to `target`.
*
* Requirements:
*
* - the calling contract must have an ETH balance of at least `value`.
* - the called Solidity function must be `payable`.
*
* _Available since v3.1._
*/
function functionCallWithValue(address target, bytes memory data, uint256 value) internal returns (bytes memory) {
return functionCallWithValue(target, data, value, "Address: low-level call with value failed");
}
/**
* @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but
* with `errorMessage` as a fallback revert reason when `target` reverts.
*
* _Available since v3.1._
*/
function functionCallWithValue(address target, bytes memory data, uint256 value, string memory errorMessage) internal returns (bytes memory) {
require(address(this).balance >= value, "Address: insufficient balance for call");
return _functionCallWithValue(target, data, value, errorMessage);
}
function _functionCallWithValue(address target, bytes memory data, uint256 weiValue, string memory errorMessage) private returns (bytes memory) {
require(isContract(target), "Address: call to non-contract");
// solhint-disable-next-line avoid-low-level-calls
(bool success, bytes memory returndata) = target.call{ value: weiValue }(data);
if (success) {
return returndata;
} else {
// Look for revert reason and bubble it up if present
if (returndata.length > 0) {
// The easiest way to bubble the revert reason is using memory via assembly
// solhint-disable-next-line no-inline-assembly
assembly {
let returndata_size := mload(returndata)
revert(add(32, returndata), returndata_size)
}
} else {
revert(errorMessage);
}
}
}
} | functionCallWithValue | function functionCallWithValue(address target, bytes memory data, uint256 value, string memory errorMessage) internal returns (bytes memory) {
require(address(this).balance >= value, "Address: insufficient balance for call");
return _functionCallWithValue(target, data, value, errorMessage);
}
| /**
* @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but
* with `errorMessage` as a fallback revert reason when `target` reverts.
*
* _Available since v3.1._
*/ | NatSpecMultiLine | v0.6.12+commit.27d51765 | MIT | ipfs://da9bea1f0f6f0a5e146550ef47bb79e6d7e0ee4d5b464330b11af0c2351c4e00 | {
"func_code_index": [
4774,
5095
]
} | 8,691 |
||
Address | Address.sol | 0xaaf28fc39e0dc1fa4b1c7f02b034f48b211d3792 | Solidity | Ownable | contract Ownable is Context {
address private _owner;
event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);
/**
* @dev Initializes the contract setting the deployer as the initial owner.
*/
constructor () internal {
address msgSender = _msgSender();
_owner = msgSender;
emit OwnershipTransferred(address(0), msgSender);
}
/**
* @dev Returns the address of the current owner.
*/
function owner() public view returns (address) {
return _owner;
}
/**
* @dev Throws if called by any account other than the owner.
*/
modifier onlyOwner() {
require(_owner == _msgSender(), "Ownable: caller is not the owner");
_;
}
/**
* @dev Leaves the contract without owner. It will not be possible to call
* `onlyOwner` functions anymore. Can only be called by the current owner.
*
* NOTE: Renouncing ownership will leave the contract without an owner,
* thereby removing any functionality that is only available to the owner.
*/
function renounceOwnership() public virtual onlyOwner {
emit OwnershipTransferred(_owner, address(0));
_owner = address(0);
}
/**
* @dev Transfers ownership of the contract to a new account (`newOwner`).
* Can only be called by the current owner.
*/
function transferOwnership(address newOwner) public virtual onlyOwner {
require(newOwner != address(0), "Ownable: new owner is the zero address");
emit OwnershipTransferred(_owner, newOwner);
_owner = newOwner;
}
} | owner | function owner() public view returns (address) {
return _owner;
}
| /**
* @dev Returns the address of the current owner.
*/ | NatSpecMultiLine | v0.6.12+commit.27d51765 | MIT | ipfs://da9bea1f0f6f0a5e146550ef47bb79e6d7e0ee4d5b464330b11af0c2351c4e00 | {
"func_code_index": [
497,
581
]
} | 8,692 |
||
Address | Address.sol | 0xaaf28fc39e0dc1fa4b1c7f02b034f48b211d3792 | Solidity | Ownable | contract Ownable is Context {
address private _owner;
event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);
/**
* @dev Initializes the contract setting the deployer as the initial owner.
*/
constructor () internal {
address msgSender = _msgSender();
_owner = msgSender;
emit OwnershipTransferred(address(0), msgSender);
}
/**
* @dev Returns the address of the current owner.
*/
function owner() public view returns (address) {
return _owner;
}
/**
* @dev Throws if called by any account other than the owner.
*/
modifier onlyOwner() {
require(_owner == _msgSender(), "Ownable: caller is not the owner");
_;
}
/**
* @dev Leaves the contract without owner. It will not be possible to call
* `onlyOwner` functions anymore. Can only be called by the current owner.
*
* NOTE: Renouncing ownership will leave the contract without an owner,
* thereby removing any functionality that is only available to the owner.
*/
function renounceOwnership() public virtual onlyOwner {
emit OwnershipTransferred(_owner, address(0));
_owner = address(0);
}
/**
* @dev Transfers ownership of the contract to a new account (`newOwner`).
* Can only be called by the current owner.
*/
function transferOwnership(address newOwner) public virtual onlyOwner {
require(newOwner != address(0), "Ownable: new owner is the zero address");
emit OwnershipTransferred(_owner, newOwner);
_owner = newOwner;
}
} | renounceOwnership | function renounceOwnership() public virtual onlyOwner {
emit OwnershipTransferred(_owner, address(0));
_owner = address(0);
}
| /**
* @dev Leaves the contract without owner. It will not be possible to call
* `onlyOwner` functions anymore. Can only be called by the current owner.
*
* NOTE: Renouncing ownership will leave the contract without an owner,
* thereby removing any functionality that is only available to the owner.
*/ | NatSpecMultiLine | v0.6.12+commit.27d51765 | MIT | ipfs://da9bea1f0f6f0a5e146550ef47bb79e6d7e0ee4d5b464330b11af0c2351c4e00 | {
"func_code_index": [
1139,
1292
]
} | 8,693 |
||
Address | Address.sol | 0xaaf28fc39e0dc1fa4b1c7f02b034f48b211d3792 | Solidity | Ownable | contract Ownable is Context {
address private _owner;
event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);
/**
* @dev Initializes the contract setting the deployer as the initial owner.
*/
constructor () internal {
address msgSender = _msgSender();
_owner = msgSender;
emit OwnershipTransferred(address(0), msgSender);
}
/**
* @dev Returns the address of the current owner.
*/
function owner() public view returns (address) {
return _owner;
}
/**
* @dev Throws if called by any account other than the owner.
*/
modifier onlyOwner() {
require(_owner == _msgSender(), "Ownable: caller is not the owner");
_;
}
/**
* @dev Leaves the contract without owner. It will not be possible to call
* `onlyOwner` functions anymore. Can only be called by the current owner.
*
* NOTE: Renouncing ownership will leave the contract without an owner,
* thereby removing any functionality that is only available to the owner.
*/
function renounceOwnership() public virtual onlyOwner {
emit OwnershipTransferred(_owner, address(0));
_owner = address(0);
}
/**
* @dev Transfers ownership of the contract to a new account (`newOwner`).
* Can only be called by the current owner.
*/
function transferOwnership(address newOwner) public virtual onlyOwner {
require(newOwner != address(0), "Ownable: new owner is the zero address");
emit OwnershipTransferred(_owner, newOwner);
_owner = newOwner;
}
} | transferOwnership | function transferOwnership(address newOwner) public virtual onlyOwner {
require(newOwner != address(0), "Ownable: new owner is the zero address");
emit OwnershipTransferred(_owner, newOwner);
_owner = newOwner;
}
| /**
* @dev Transfers ownership of the contract to a new account (`newOwner`).
* Can only be called by the current owner.
*/ | NatSpecMultiLine | v0.6.12+commit.27d51765 | MIT | ipfs://da9bea1f0f6f0a5e146550ef47bb79e6d7e0ee4d5b464330b11af0c2351c4e00 | {
"func_code_index": [
1442,
1691
]
} | 8,694 |
||
DODONFTRegistry | contracts/Factory/Registries/DODONFTRegistry.sol | 0xa7263eb38b9a61b72397c884b5f9bfb5c34a7840 | Solidity | DODONFTRegistry | contract DODONFTRegistry is InitializableOwnable, IDODONFTRegistry {
mapping (address => bool) public isAdminListed;
// ============ Registry ============
// Vault -> Frag
mapping(address => address) public _VAULT_FRAG_REGISTRY_;
// base -> quote -> DVM address list
mapping(address => mapping(address => address[])) public _REGISTRY_;
// ============ Events ============
event NewRegistry(
address vault,
address fragment,
address dvm
);
event RemoveRegistry(address fragment);
// ============ Admin Operation Functions ============
function addRegistry(
address vault,
address fragment,
address quoteToken,
address dvm
) override external {
require(isAdminListed[msg.sender], "ACCESS_DENIED");
_VAULT_FRAG_REGISTRY_[vault] = fragment;
_REGISTRY_[fragment][quoteToken].push(dvm);
emit NewRegistry(vault, fragment, dvm);
}
function removeRegistry(address fragment) override external {
require(isAdminListed[msg.sender], "ACCESS_DENIED");
address vault = IFragment(fragment)._COLLATERAL_VAULT_();
address dvm = IFragment(fragment)._DVM_();
_VAULT_FRAG_REGISTRY_[vault] = address(0);
address quoteToken = IDVM(dvm)._QUOTE_TOKEN_();
address[] memory registryList = _REGISTRY_[fragment][quoteToken];
for (uint256 i = 0; i < registryList.length; i++) {
if (registryList[i] == dvm) {
if(i != registryList.length - 1) {
_REGISTRY_[fragment][quoteToken][i] = _REGISTRY_[fragment][quoteToken][registryList.length - 1];
}
_REGISTRY_[fragment][quoteToken].pop();
break;
}
}
emit RemoveRegistry(fragment);
}
function addAdminList (address contractAddr) external onlyOwner {
isAdminListed[contractAddr] = true;
}
function removeAdminList (address contractAddr) external onlyOwner {
isAdminListed[contractAddr] = false;
}
function getDODOPool(address baseToken, address quoteToken)
external
view
returns (address[] memory pools)
{
return _REGISTRY_[baseToken][quoteToken];
}
function getDODOPoolBidirection(address token0, address token1)
external
view
returns (address[] memory baseToken0Pool, address[] memory baseToken1Pool)
{
return (_REGISTRY_[token0][token1], _REGISTRY_[token1][token0]);
}
} | /**
* @title DODONFT Registry
* @author DODO Breeder
*
* @notice Register DODONFT Pools
*/ | NatSpecMultiLine | addRegistry | function addRegistry(
address vault,
address fragment,
address quoteToken,
address dvm
) override external {
require(isAdminListed[msg.sender], "ACCESS_DENIED");
_VAULT_FRAG_REGISTRY_[vault] = fragment;
_REGISTRY_[fragment][quoteToken].push(dvm);
emit NewRegistry(vault, fragment, dvm);
}
| // ============ Admin Operation Functions ============ | LineComment | v0.6.9+commit.3e3065ac | Apache-2.0 | ipfs://7b7bfeb5b4504088fc081b5532fb95756fccd6e62f0fcd2e0699633543130769 | {
"func_code_index": [
639,
1015
]
} | 8,695 |
Rug | Rug.sol | 0x64c8b0ec48328af632d2ee36ee3852ff98b4360c | Solidity | IERC20 | interface IERC20 {
/**
* @dev Returns the amount of tokens in existence.
*/
function totalSupply() external view returns (uint256);
/**
* @dev Returns the amount of tokens owned by `account`.
*/
function balanceOf(address account) external view returns (uint256);
/**
* @dev Moves `amount` tokens from the caller's account to `recipient`.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* Emits a {Transfer} event.
*/
function transfer(address recipient, uint256 amount) external returns (bool);
/**
* @dev Returns the remaining number of tokens that `spender` will be
* allowed to spend on behalf of `owner` through {transferFrom}. This is
* zero by default.
*
* This value changes when {approve} or {transferFrom} are called.
*/
function allowance(address owner, address spender) external view returns (uint256);
/**
* @dev Sets `amount` as the allowance of `spender` over the caller's tokens.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* IMPORTANT: Beware that changing an allowance with this method brings the risk
* that someone may use both the old and the new allowance by unfortunate
* transaction ordering. One possible solution to mitigate this race
* condition is to first reduce the spender's allowance to 0 and set the
* desired value afterwards:
* https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729
*
* Emits an {Approval} event.
*/
function approve(address spender, uint256 amount) external returns (bool);
/**
* @dev Moves `amount` tokens from `sender` to `recipient` using the
* allowance mechanism. `amount` is then deducted from the caller's
* allowance.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* Emits a {Transfer} event.
*/
function transferFrom(address sender, address recipient, uint256 amount) external returns (bool);
/**
* @dev Emitted when `value` tokens are moved from one account (`from`) to
* another (`to`).
*
* Note that `value` may be zero.
*/
event Transfer(address indexed from, address indexed to, uint256 value);
/**
* @dev Emitted when the allowance of a `spender` for an `owner` is set by
* a call to {approve}. `value` is the new allowance.
*/
event Approval(address indexed owner, address indexed spender, uint256 value);
} | /**
* @dev Interface of the ERC20 standard as defined in the EIP.
*/ | NatSpecMultiLine | totalSupply | function totalSupply() external view returns (uint256);
| /**
* @dev Returns the amount of tokens in existence.
*/ | NatSpecMultiLine | v0.6.6+commit.6c089d02 | MIT | ipfs://bfb9577c6cd5404043b49b2757b59e8486f69e2b2cc6adb970a9c7c8c7e6e4e5 | {
"func_code_index": [
94,
154
]
} | 8,696 |
Rug | Rug.sol | 0x64c8b0ec48328af632d2ee36ee3852ff98b4360c | Solidity | IERC20 | interface IERC20 {
/**
* @dev Returns the amount of tokens in existence.
*/
function totalSupply() external view returns (uint256);
/**
* @dev Returns the amount of tokens owned by `account`.
*/
function balanceOf(address account) external view returns (uint256);
/**
* @dev Moves `amount` tokens from the caller's account to `recipient`.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* Emits a {Transfer} event.
*/
function transfer(address recipient, uint256 amount) external returns (bool);
/**
* @dev Returns the remaining number of tokens that `spender` will be
* allowed to spend on behalf of `owner` through {transferFrom}. This is
* zero by default.
*
* This value changes when {approve} or {transferFrom} are called.
*/
function allowance(address owner, address spender) external view returns (uint256);
/**
* @dev Sets `amount` as the allowance of `spender` over the caller's tokens.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* IMPORTANT: Beware that changing an allowance with this method brings the risk
* that someone may use both the old and the new allowance by unfortunate
* transaction ordering. One possible solution to mitigate this race
* condition is to first reduce the spender's allowance to 0 and set the
* desired value afterwards:
* https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729
*
* Emits an {Approval} event.
*/
function approve(address spender, uint256 amount) external returns (bool);
/**
* @dev Moves `amount` tokens from `sender` to `recipient` using the
* allowance mechanism. `amount` is then deducted from the caller's
* allowance.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* Emits a {Transfer} event.
*/
function transferFrom(address sender, address recipient, uint256 amount) external returns (bool);
/**
* @dev Emitted when `value` tokens are moved from one account (`from`) to
* another (`to`).
*
* Note that `value` may be zero.
*/
event Transfer(address indexed from, address indexed to, uint256 value);
/**
* @dev Emitted when the allowance of a `spender` for an `owner` is set by
* a call to {approve}. `value` is the new allowance.
*/
event Approval(address indexed owner, address indexed spender, uint256 value);
} | /**
* @dev Interface of the ERC20 standard as defined in the EIP.
*/ | NatSpecMultiLine | balanceOf | function balanceOf(address account) external view returns (uint256);
| /**
* @dev Returns the amount of tokens owned by `account`.
*/ | NatSpecMultiLine | v0.6.6+commit.6c089d02 | MIT | ipfs://bfb9577c6cd5404043b49b2757b59e8486f69e2b2cc6adb970a9c7c8c7e6e4e5 | {
"func_code_index": [
237,
310
]
} | 8,697 |
Rug | Rug.sol | 0x64c8b0ec48328af632d2ee36ee3852ff98b4360c | Solidity | IERC20 | interface IERC20 {
/**
* @dev Returns the amount of tokens in existence.
*/
function totalSupply() external view returns (uint256);
/**
* @dev Returns the amount of tokens owned by `account`.
*/
function balanceOf(address account) external view returns (uint256);
/**
* @dev Moves `amount` tokens from the caller's account to `recipient`.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* Emits a {Transfer} event.
*/
function transfer(address recipient, uint256 amount) external returns (bool);
/**
* @dev Returns the remaining number of tokens that `spender` will be
* allowed to spend on behalf of `owner` through {transferFrom}. This is
* zero by default.
*
* This value changes when {approve} or {transferFrom} are called.
*/
function allowance(address owner, address spender) external view returns (uint256);
/**
* @dev Sets `amount` as the allowance of `spender` over the caller's tokens.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* IMPORTANT: Beware that changing an allowance with this method brings the risk
* that someone may use both the old and the new allowance by unfortunate
* transaction ordering. One possible solution to mitigate this race
* condition is to first reduce the spender's allowance to 0 and set the
* desired value afterwards:
* https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729
*
* Emits an {Approval} event.
*/
function approve(address spender, uint256 amount) external returns (bool);
/**
* @dev Moves `amount` tokens from `sender` to `recipient` using the
* allowance mechanism. `amount` is then deducted from the caller's
* allowance.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* Emits a {Transfer} event.
*/
function transferFrom(address sender, address recipient, uint256 amount) external returns (bool);
/**
* @dev Emitted when `value` tokens are moved from one account (`from`) to
* another (`to`).
*
* Note that `value` may be zero.
*/
event Transfer(address indexed from, address indexed to, uint256 value);
/**
* @dev Emitted when the allowance of a `spender` for an `owner` is set by
* a call to {approve}. `value` is the new allowance.
*/
event Approval(address indexed owner, address indexed spender, uint256 value);
} | /**
* @dev Interface of the ERC20 standard as defined in the EIP.
*/ | NatSpecMultiLine | transfer | function transfer(address recipient, uint256 amount) external returns (bool);
| /**
* @dev Moves `amount` tokens from the caller's account to `recipient`.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* Emits a {Transfer} event.
*/ | NatSpecMultiLine | v0.6.6+commit.6c089d02 | MIT | ipfs://bfb9577c6cd5404043b49b2757b59e8486f69e2b2cc6adb970a9c7c8c7e6e4e5 | {
"func_code_index": [
534,
616
]
} | 8,698 |
Rug | Rug.sol | 0x64c8b0ec48328af632d2ee36ee3852ff98b4360c | Solidity | IERC20 | interface IERC20 {
/**
* @dev Returns the amount of tokens in existence.
*/
function totalSupply() external view returns (uint256);
/**
* @dev Returns the amount of tokens owned by `account`.
*/
function balanceOf(address account) external view returns (uint256);
/**
* @dev Moves `amount` tokens from the caller's account to `recipient`.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* Emits a {Transfer} event.
*/
function transfer(address recipient, uint256 amount) external returns (bool);
/**
* @dev Returns the remaining number of tokens that `spender` will be
* allowed to spend on behalf of `owner` through {transferFrom}. This is
* zero by default.
*
* This value changes when {approve} or {transferFrom} are called.
*/
function allowance(address owner, address spender) external view returns (uint256);
/**
* @dev Sets `amount` as the allowance of `spender` over the caller's tokens.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* IMPORTANT: Beware that changing an allowance with this method brings the risk
* that someone may use both the old and the new allowance by unfortunate
* transaction ordering. One possible solution to mitigate this race
* condition is to first reduce the spender's allowance to 0 and set the
* desired value afterwards:
* https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729
*
* Emits an {Approval} event.
*/
function approve(address spender, uint256 amount) external returns (bool);
/**
* @dev Moves `amount` tokens from `sender` to `recipient` using the
* allowance mechanism. `amount` is then deducted from the caller's
* allowance.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* Emits a {Transfer} event.
*/
function transferFrom(address sender, address recipient, uint256 amount) external returns (bool);
/**
* @dev Emitted when `value` tokens are moved from one account (`from`) to
* another (`to`).
*
* Note that `value` may be zero.
*/
event Transfer(address indexed from, address indexed to, uint256 value);
/**
* @dev Emitted when the allowance of a `spender` for an `owner` is set by
* a call to {approve}. `value` is the new allowance.
*/
event Approval(address indexed owner, address indexed spender, uint256 value);
} | /**
* @dev Interface of the ERC20 standard as defined in the EIP.
*/ | NatSpecMultiLine | allowance | function allowance(address owner, address spender) external view returns (uint256);
| /**
* @dev Returns the remaining number of tokens that `spender` will be
* allowed to spend on behalf of `owner` through {transferFrom}. This is
* zero by default.
*
* This value changes when {approve} or {transferFrom} are called.
*/ | NatSpecMultiLine | v0.6.6+commit.6c089d02 | MIT | ipfs://bfb9577c6cd5404043b49b2757b59e8486f69e2b2cc6adb970a9c7c8c7e6e4e5 | {
"func_code_index": [
895,
983
]
} | 8,699 |
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