text: // Copyright (c) 2009-2010 Satoshi Nakamoto
  // Copyright (c) 2009-2014 The Bitcoin Core developers
  // Distributed under the MIT software license, see the accompanying
  // file COPYING or http://www.opensource.org/licenses/mit-license.php.
  
  #include "script_error.h"
  
  const char *ScriptErrorString(const ScriptError serror) {
    switch (serror) {
    case SCRIPT_ERR_OK:
      return "No error";
    case SCRIPT_ERR_EVAL_FALSE:
      return "Script evaluated without error but finished with a false/empty top "
             "stack element";
    case SCRIPT_ERR_VERIFY:
      return "Script failed an OP_VERIFY operation";
    case SCRIPT_ERR_EQUALVERIFY:
      return "Script failed an OP_EQUALVERIFY operation";
    case SCRIPT_ERR_CHECKMULTISIGVERIFY:
      return "Script failed an OP_CHECKMULTISIGVERIFY operation";
    case SCRIPT_ERR_CHECKSIGVERIFY:
      return "Script failed an OP_CHECKSIGVERIFY operation";
    case SCRIPT_ERR_NUMEQUALVERIFY:
      return "Script failed an OP_NUMEQUALVERIFY operation";
    case SCRIPT_ERR_SCRIPT_SIZE:
      return "Script is too big";
    case SCRIPT_ERR_PUSH_SIZE:
      return "Push value size limit exceeded";
    case SCRIPT_ERR_OP_COUNT:
      return "Operation limit exceeded";
    case SCRIPT_ERR_STACK_SIZE:
      return "Stack size limit exceeded";
    case SCRIPT_ERR_SIG_COUNT:
      return "Signature count negative or greater than pubkey count";
    case SCRIPT_ERR_PUBKEY_COUNT:
      return "Pubkey count negative or limit exceeded";
    case SCRIPT_ERR_BAD_OPCODE:
      return "Opcode missing or not understood";
    case SCRIPT_ERR_DISABLED_OPCODE:
      return "Attempted to use a disabled opcode";
    case SCRIPT_ERR_INVALID_STACK_OPERATION:
      return "Operation not valid with the current stack size";
    case SCRIPT_ERR_INVALID_ALTSTACK_OPERATION:
      return "Operation not valid with the current altstack size";
    case SCRIPT_ERR_OP_RETURN:
      return "OP_RETURN was encountered";
    case SCRIPT_ERR_UNBALANCED_CONDITIONAL:
      return "Invalid OP_IF construction";
    case SCRIPT_ERR_NEGATIVE_LOCKTIME:
      return "Negative locktime";
    case SCRIPT_ERR_UNSATISFIED_LOCKTIME:
      return "Locktime requirement not satisfied";
    case SCRIPT_ERR_SIG_HASHTYPE:
      return "Signature hash type missing or not understood";
    case SCRIPT_ERR_SIG_DER:
      return "Non-canonical DER signature";
    case SCRIPT_ERR_MINIMALDATA:
      return "Data push larger than necessary";
    case SCRIPT_ERR_SIG_PUSHONLY:
      return "Only non-push operators allowed in signatures";
    case SCRIPT_ERR_SIG_HIGH_S:
      return "Non-canonical signature: S value is unnecessarily high";
    case SCRIPT_ERR_SIG_NULLDUMMY:
      return "Dummy CHECKMULTISIG argument must be zero";
    case SCRIPT_ERR_DISCOURAGE_UPGRADABLE_NOPS:
      return "NOPx reserved for soft-fork upgrades";
    case SCRIPT_ERR_PUBKEYTYPE:
      return "Public key is neither compressed or uncompressed";
    case SCRIPT_ERR_UNKNOWN_ERROR:
    case SCRIPT_ERR_ERROR_COUNT:
    default:
      break;
    }
    return "unknown error";
  }
  