creation_sourcecode: pragma solidity ^0.4.24;
  // File: @aragon/apps-shared-minime/contracts/ITokenController.sol
  /// @dev The token controller contract must implement these functions
  
  
  interface ITokenController {
      /// @notice Called when `_owner` sends ether to the MiniMe Token contract
      /// @param _owner The address that sent the ether to create tokens
      /// @return True if the ether is accepted, false if it throws
      function proxyPayment(address _owner) external payable returns(bool);
  
      /// @notice Notifies the controller about a token transfer allowing the
      ///  controller to react if desired
      /// @param _from The origin of the transfer
      /// @param _to The destination of the transfer
      /// @param _amount The amount of the transfer
      /// @return False if the controller does not authorize the transfer
      function onTransfer(address _from, address _to, uint _amount) external returns(bool);
  
      /// @notice Notifies the controller about an approval allowing the
      ///  controller to react if desired
      /// @param _owner The address that calls `approve()`
      /// @param _spender The spender in the `approve()` call
      /// @param _amount The amount in the `approve()` call
      /// @return False if the controller does not authorize the approval
      function onApprove(address _owner, address _spender, uint _amount) external returns(bool);
  }
  // File: @aragon/apps-shared-minime/contracts/MiniMeToken.sol
  /*
      Copyright 2016, Jordi Baylina
      This program is free software: you can redistribute it and/or modify
      it under the terms of the GNU General Public License as published by
      the Free Software Foundation, either version 3 of the License, or
      (at your option) any later version.
      This program is distributed in the hope that it will be useful,
      but WITHOUT ANY WARRANTY; without even the implied warranty of
      MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
      GNU General Public License for more details.
      You should have received a copy of the GNU General Public License
      along with this program.  If not, see <http://www.gnu.org/licenses/>.
   */
  
  /// @title MiniMeToken Contract
  /// @author Jordi Baylina
  /// @dev This token contract's goal is to make it easy for anyone to clone this
  ///  token using the token distribution at a given block, this will allow DAO's
  ///  and DApps to upgrade their features in a decentralized manner without
  ///  affecting the original token
  /// @dev It is ERC20 compliant, but still needs to under go further testing.
  
  
  contract Controlled {
      /// @notice The address of the controller is the only address that can call
      ///  a function with this modifier
      modifier onlyController {
          require(msg.sender == controller);
          _;
      }
  
      address public controller;
  
      function Controlled()  public { controller = msg.sender;}
  
      /// @notice Changes the controller of the contract
      /// @param _newController The new controller of the contract
      function changeController(address _newController) onlyController  public {
          controller = _newController;
      }
  }
  
  contract ApproveAndCallFallBack {
      function receiveApproval(
          address from,
          uint256 _amount,
          address _token,
          bytes _data
      ) public;
  }
  
  /// @dev The actual token contract, the default controller is the msg.sender
  ///  that deploys the contract, so usually this token will be deployed by a
  ///  token controller contract, which Giveth will call a "Campaign"
  contract MiniMeToken is Controlled {
  
      string public name;                //The Token's name: e.g. DigixDAO Tokens
      uint8 public decimals;             //Number of decimals of the smallest unit
      string public symbol;              //An identifier: e.g. REP
      string public version = "MMT_0.1"; //An arbitrary versioning scheme
  
  
      /// @dev `Checkpoint` is the structure that attaches a block number to a
      ///  given value, the block number attached is the one that last changed the
      ///  value
      struct Checkpoint {
  
          // `fromBlock` is the block number that the value was generated from
          uint128 fromBlock;
  
          // `value` is the amount of tokens at a specific block number
          uint128 value;
      }
  
      // `parentToken` is the Token address that was cloned to produce this token;
      //  it will be 0x0 for a token that was not cloned
      MiniMeToken public parentToken;
  
      // `parentSnapShotBlock` is the block number from the Parent Token that was
      //  used to determine the initial distribution of the Clone Token
      uint public parentSnapShotBlock;
  
      // `creationBlock` is the block number that the Clone Token was created
      uint public creationBlock;
  
      // `balances` is the map that tracks the balance of each address, in this
      //  contract when the balance changes the block number that the change
      //  occurred is also included in the map
      mapping (address => Checkpoint[]) balances;
  
      // `allowed` tracks any extra transfer rights as in all ERC20 tokens
      mapping (address => mapping (address => uint256)) allowed;
  
      // Tracks the history of the `totalSupply` of the token
      Checkpoint[] totalSupplyHistory;
  
      // Flag that determines if the token is transferable or not.
      bool public transfersEnabled;
  
      // The factory used to create new clone tokens
      MiniMeTokenFactory public tokenFactory;
  
  ////////////////
  // Constructor
  ////////////////
  
      /// @notice Constructor to create a MiniMeToken
      /// @param _tokenFactory The address of the MiniMeTokenFactory contract that
      ///  will create the Clone token contracts, the token factory needs to be
      ///  deployed first
      /// @param _parentToken Address of the parent token, set to 0x0 if it is a
      ///  new token
      /// @param _parentSnapShotBlock Block of the parent token that will
      ///  determine the initial distribution of the clone token, set to 0 if it
      ///  is a new token
      /// @param _tokenName Name of the new token
      /// @param _decimalUnits Number of decimals of the new token
      /// @param _tokenSymbol Token Symbol for the new token
      /// @param _transfersEnabled If true, tokens will be able to be transferred
      function MiniMeToken(
          MiniMeTokenFactory _tokenFactory,
          MiniMeToken _parentToken,
          uint _parentSnapShotBlock,
          string _tokenName,
          uint8 _decimalUnits,
          string _tokenSymbol,
          bool _transfersEnabled
      )  public
      {
          tokenFactory = _tokenFactory;
          name = _tokenName;                                 // Set the name
          decimals = _decimalUnits;                          // Set the decimals
          symbol = _tokenSymbol;                             // Set the symbol
          parentToken = _parentToken;
          parentSnapShotBlock = _parentSnapShotBlock;
          transfersEnabled = _transfersEnabled;
          creationBlock = block.number;
      }
  
  
  ///////////////////
  // ERC20 Methods
  ///////////////////
  
      /// @notice Send `_amount` tokens to `_to` from `msg.sender`
      /// @param _to The address of the recipient
      /// @param _amount The amount of tokens to be transferred
      /// @return Whether the transfer was successful or not
      function transfer(address _to, uint256 _amount) public returns (bool success) {
          require(transfersEnabled);
          return doTransfer(msg.sender, _to, _amount);
      }
  
      /// @notice Send `_amount` tokens to `_to` from `_from` on the condition it
      ///  is approved by `_from`
      /// @param _from The address holding the tokens being transferred
      /// @param _to The address of the recipient
      /// @param _amount The amount of tokens to be transferred
      /// @return True if the transfer was successful
      function transferFrom(address _from, address _to, uint256 _amount) public returns (bool success) {
  
          // The controller of this contract can move tokens around at will,
          //  this is important to recognize! Confirm that you trust the
          //  controller of this contract, which in most situations should be
          //  another open source smart contract or 0x0
          if (msg.sender != controller) {
              require(transfersEnabled);
  
              // The standard ERC 20 transferFrom functionality
              if (allowed[_from][msg.sender] < _amount)
                  return false;
              allowed[_from][msg.sender] -= _amount;
          }
          return doTransfer(_from, _to, _amount);
      }
  
      /// @dev This is the actual transfer function in the token contract, it can
      ///  only be called by other functions in this contract.
      /// @param _from The address holding the tokens being transferred
      /// @param _to The address of the recipient
      /// @param _amount The amount of tokens to be transferred
      /// @return True if the transfer was successful
      function doTransfer(address _from, address _to, uint _amount) internal returns(bool) {
          if (_amount == 0) {
              return true;
          }
          require(parentSnapShotBlock < block.number);
          // Do not allow transfer to 0x0 or the token contract itself
          require((_to != 0) && (_to != address(this)));
          // If the amount being transfered is more than the balance of the
          //  account the transfer returns false
          var previousBalanceFrom = balanceOfAt(_from, block.number);
          if (previousBalanceFrom < _amount) {
              return false;
          }
          // Alerts the token controller of the transfer
          if (isContract(controller)) {
              // Adding the ` == true` makes the linter shut up so...
              require(ITokenController(controller).onTransfer(_from, _to, _amount) == true);
          }
          // First update the balance array with the new value for the address
          //  sending the tokens
          updateValueAtNow(balances[_from], previousBalanceFrom - _amount);
          // Then update the balance array with the new value for the address
          //  receiving the tokens
          var previousBalanceTo = balanceOfAt(_to, block.number);
          require(previousBalanceTo + _amount >= previousBalanceTo); // Check for overflow
          updateValueAtNow(balances[_to], previousBalanceTo + _amount);
          // An event to make the transfer easy to find on the blockchain
          Transfer(_from, _to, _amount);
          return true;
      }
  
      /// @param _owner The address that's balance is being requested
      /// @return The balance of `_owner` at the current block
      function balanceOf(address _owner) public constant returns (uint256 balance) {
          return balanceOfAt(_owner, block.number);
      }
  
      /// @notice `msg.sender` approves `_spender` to spend `_amount` tokens on
      ///  its behalf. This is a modified version of the ERC20 approve function
      ///  to be a little bit safer
      /// @param _spender The address of the account able to transfer the tokens
      /// @param _amount The amount of tokens to be approved for transfer
      /// @return True if the approval was successful
      function approve(address _spender, uint256 _amount) public returns (bool success) {
          require(transfersEnabled);
  
          // To change the approve amount you first have to reduce the addresses`
          //  allowance to zero by calling `approve(_spender,0)` if it is not
          //  already 0 to mitigate the race condition described here:
          //  https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729
          require((_amount == 0) || (allowed[msg.sender][_spender] == 0));
  
          // Alerts the token controller of the approve function call
          if (isContract(controller)) {
              // Adding the ` == true` makes the linter shut up so...
              require(ITokenController(controller).onApprove(msg.sender, _spender, _amount) == true);
          }
  
          allowed[msg.sender][_spender] = _amount;
          Approval(msg.sender, _spender, _amount);
          return true;
      }
  
      /// @dev This function makes it easy to read the `allowed[]` map
      /// @param _owner The address of the account that owns the token
      /// @param _spender The address of the account able to transfer the tokens
      /// @return Amount of remaining tokens of _owner that _spender is allowed
      ///  to spend
      function allowance(address _owner, address _spender) public constant returns (uint256 remaining) {
          return allowed[_owner][_spender];
      }
  
      /// @notice `msg.sender` approves `_spender` to send `_amount` tokens on
      ///  its behalf, and then a function is triggered in the contract that is
      ///  being approved, `_spender`. This allows users to use their tokens to
      ///  interact with contracts in one function call instead of two
      /// @param _spender The address of the contract able to transfer the tokens
      /// @param _amount The amount of tokens to be approved for transfer
      /// @return True if the function call was successful
      function approveAndCall(ApproveAndCallFallBack _spender, uint256 _amount, bytes _extraData) public returns (bool success) {
          require(approve(_spender, _amount));
  
          _spender.receiveApproval(
              msg.sender,
              _amount,
              this,
              _extraData
          );
  
          return true;
      }
  
      /// @dev This function makes it easy to get the total number of tokens
      /// @return The total number of tokens
      function totalSupply() public constant returns (uint) {
          return totalSupplyAt(block.number);
      }
  
  
  ////////////////
  // Query balance and totalSupply in History
  ////////////////
  
      /// @dev Queries the balance of `_owner` at a specific `_blockNumber`
      /// @param _owner The address from which the balance will be retrieved
      /// @param _blockNumber The block number when the balance is queried
      /// @return The balance at `_blockNumber`
      function balanceOfAt(address _owner, uint _blockNumber) public constant returns (uint) {
  
          // These next few lines are used when the balance of the token is
          //  requested before a check point was ever created for this token, it
          //  requires that the `parentToken.balanceOfAt` be queried at the
          //  genesis block for that token as this contains initial balance of
          //  this token
          if ((balances[_owner].length == 0) || (balances[_owner][0].fromBlock > _blockNumber)) {
              if (address(parentToken) != 0) {
                  return parentToken.balanceOfAt(_owner, min(_blockNumber, parentSnapShotBlock));
              } else {
                  // Has no parent
                  return 0;
              }
  
          // This will return the expected balance during normal situations
          } else {
              return getValueAt(balances[_owner], _blockNumber);
          }
      }
  
      /// @notice Total amount of tokens at a specific `_blockNumber`.
      /// @param _blockNumber The block number when the totalSupply is queried
      /// @return The total amount of tokens at `_blockNumber`
      function totalSupplyAt(uint _blockNumber) public constant returns(uint) {
  
          // These next few lines are used when the totalSupply of the token is
          //  requested before a check point was ever created for this token, it
          //  requires that the `parentToken.totalSupplyAt` be queried at the
          //  genesis block for this token as that contains totalSupply of this
          //  token at this block number.
          if ((totalSupplyHistory.length == 0) || (totalSupplyHistory[0].fromBlock > _blockNumber)) {
              if (address(parentToken) != 0) {
                  return parentToken.totalSupplyAt(min(_blockNumber, parentSnapShotBlock));
              } else {
                  return 0;
              }
  
          // This will return the expected totalSupply during normal situations
          } else {
              return getValueAt(totalSupplyHistory, _blockNumber);
          }
      }
  
  ////////////////
  // Clone Token Method
  ////////////////
  
      /// @notice Creates a new clone token with the initial distribution being
      ///  this token at `_snapshotBlock`
      /// @param _cloneTokenName Name of the clone token
      /// @param _cloneDecimalUnits Number of decimals of the smallest unit
      /// @param _cloneTokenSymbol Symbol of the clone token
      /// @param _snapshotBlock Block when the distribution of the parent token is
      ///  copied to set the initial distribution of the new clone token;
      ///  if the block is zero than the actual block, the current block is used
      /// @param _transfersEnabled True if transfers are allowed in the clone
      /// @return The address of the new MiniMeToken Contract
      function createCloneToken(
          string _cloneTokenName,
          uint8 _cloneDecimalUnits,
          string _cloneTokenSymbol,
          uint _snapshotBlock,
          bool _transfersEnabled
      ) public returns(MiniMeToken)
      {
          uint256 snapshot = _snapshotBlock == 0 ? block.number - 1 : _snapshotBlock;
  
          MiniMeToken cloneToken = tokenFactory.createCloneToken(
              this,
              snapshot,
              _cloneTokenName,
              _cloneDecimalUnits,
              _cloneTokenSymbol,
              _transfersEnabled
          );
  
          cloneToken.changeController(msg.sender);
  
          // An event to make the token easy to find on the blockchain
          NewCloneToken(address(cloneToken), snapshot);
          return cloneToken;
      }
  
  ////////////////
  // Generate and destroy tokens
  ////////////////
  
      /// @notice Generates `_amount` tokens that are assigned to `_owner`
      /// @param _owner The address that will be assigned the new tokens
      /// @param _amount The quantity of tokens generated
      /// @return True if the tokens are generated correctly
      function generateTokens(address _owner, uint _amount) onlyController public returns (bool) {
          uint curTotalSupply = totalSupply();
          require(curTotalSupply + _amount >= curTotalSupply); // Check for overflow
          uint previousBalanceTo = balanceOf(_owner);
          require(previousBalanceTo + _amount >= previousBalanceTo); // Check for overflow
          updateValueAtNow(totalSupplyHistory, curTotalSupply + _amount);
          updateValueAtNow(balances[_owner], previousBalanceTo + _amount);
          Transfer(0, _owner, _amount);
          return true;
      }
  
  
      /// @notice Burns `_amount` tokens from `_owner`
      /// @param _owner The address that will lose the tokens
      /// @param _amount The quantity of tokens to burn
      /// @return True if the tokens are burned correctly
      function destroyTokens(address _owner, uint _amount) onlyController public returns (bool) {
          uint curTotalSupply = totalSupply();
          require(curTotalSupply >= _amount);
          uint previousBalanceFrom = balanceOf(_owner);
          require(previousBalanceFrom >= _amount);
          updateValueAtNow(totalSupplyHistory, curTotalSupply - _amount);
          updateValueAtNow(balances[_owner], previousBalanceFrom - _amount);
          Transfer(_owner, 0, _amount);
          return true;
      }
  
  ////////////////
  // Enable tokens transfers
  ////////////////
  
  
      /// @notice Enables token holders to transfer their tokens freely if true
      /// @param _transfersEnabled True if transfers are allowed in the clone
      function enableTransfers(bool _transfersEnabled) onlyController public {
          transfersEnabled = _transfersEnabled;
      }
  
  ////////////////
  // Internal helper functions to query and set a value in a snapshot array
  ////////////////
  
      /// @dev `getValueAt` retrieves the number of tokens at a given block number
      /// @param checkpoints The history of values being queried
      /// @param _block The block number to retrieve the value at
      /// @return The number of tokens being queried
      function getValueAt(Checkpoint[] storage checkpoints, uint _block) constant internal returns (uint) {
          if (checkpoints.length == 0)
              return 0;
  
          // Shortcut for the actual value
          if (_block >= checkpoints[checkpoints.length-1].fromBlock)
              return checkpoints[checkpoints.length-1].value;
          if (_block < checkpoints[0].fromBlock)
              return 0;
  
          // Binary search of the value in the array
          uint min = 0;
          uint max = checkpoints.length-1;
          while (max > min) {
              uint mid = (max + min + 1) / 2;
              if (checkpoints[mid].fromBlock<=_block) {
                  min = mid;
              } else {
                  max = mid-1;
              }
          }
          return checkpoints[min].value;
      }
  
      /// @dev `updateValueAtNow` used to update the `balances` map and the
      ///  `totalSupplyHistory`
      /// @param checkpoints The history of data being updated
      /// @param _value The new number of tokens
      function updateValueAtNow(Checkpoint[] storage checkpoints, uint _value) internal {
          if ((checkpoints.length == 0) || (checkpoints[checkpoints.length - 1].fromBlock < block.number)) {
              Checkpoint storage newCheckPoint = checkpoints[checkpoints.length++];
              newCheckPoint.fromBlock = uint128(block.number);
              newCheckPoint.value = uint128(_value);
          } else {
              Checkpoint storage oldCheckPoint = checkpoints[checkpoints.length - 1];
              oldCheckPoint.value = uint128(_value);
          }
      }
  
      /// @dev Internal function to determine if an address is a contract
      /// @param _addr The address being queried
      /// @return True if `_addr` is a contract
      function isContract(address _addr) constant internal returns(bool) {
          uint size;
          if (_addr == 0)
              return false;
  
          assembly {
              size := extcodesize(_addr)
          }
  
          return size>0;
      }
  
      /// @dev Helper function to return a min betwen the two uints
      function min(uint a, uint b) pure internal returns (uint) {
          return a < b ? a : b;
      }
  
      /// @notice The fallback function: If the contract's controller has not been
      ///  set to 0, then the `proxyPayment` method is called which relays the
      ///  ether and creates tokens as described in the token controller contract
      function () external payable {
          require(isContract(controller));
          // Adding the ` == true` makes the linter shut up so...
          require(ITokenController(controller).proxyPayment.value(msg.value)(msg.sender) == true);
      }
  
  //////////
  // Safety Methods
  //////////
  
      /// @notice This method can be used by the controller to extract mistakenly
      ///  sent tokens to this contract.
      /// @param _token The address of the token contract that you want to recover
      ///  set to 0 in case you want to extract ether.
      function claimTokens(address _token) onlyController public {
          if (_token == 0x0) {
              controller.transfer(this.balance);
              return;
          }
  
          MiniMeToken token = MiniMeToken(_token);
          uint balance = token.balanceOf(this);
          token.transfer(controller, balance);
          ClaimedTokens(_token, controller, balance);
      }
  
  ////////////////
  // Events
  ////////////////
      event ClaimedTokens(address indexed _token, address indexed _controller, uint _amount);
      event Transfer(address indexed _from, address indexed _to, uint256 _amount);
      event NewCloneToken(address indexed _cloneToken, uint _snapshotBlock);
      event Approval(
          address indexed _owner,
          address indexed _spender,
          uint256 _amount
          );
  
  }
  
  
  ////////////////
  // MiniMeTokenFactory
  ////////////////
  
  /// @dev This contract is used to generate clone contracts from a contract.
  ///  In solidity this is the way to create a contract from a contract of the
  ///  same class
  contract MiniMeTokenFactory {
  
      /// @notice Update the DApp by creating a new token with new functionalities
      ///  the msg.sender becomes the controller of this clone token
      /// @param _parentToken Address of the token being cloned
      /// @param _snapshotBlock Block of the parent token that will
      ///  determine the initial distribution of the clone token
      /// @param _tokenName Name of the new token
      /// @param _decimalUnits Number of decimals of the new token
      /// @param _tokenSymbol Token Symbol for the new token
      /// @param _transfersEnabled If true, tokens will be able to be transferred
      /// @return The address of the new token contract
      function createCloneToken(
          MiniMeToken _parentToken,
          uint _snapshotBlock,
          string _tokenName,
          uint8 _decimalUnits,
          string _tokenSymbol,
          bool _transfersEnabled
      ) public returns (MiniMeToken)
      {
          MiniMeToken newToken = new MiniMeToken(
              this,
              _parentToken,
              _snapshotBlock,
              _tokenName,
              _decimalUnits,
              _tokenSymbol,
              _transfersEnabled
          );
  
          newToken.changeController(msg.sender);
          return newToken;
      }
  }