{
  "contractName": "IERC20",
  "abi": [
    {
      "anonymous": false,
      "inputs": [
        {
          "indexed": true,
          "name": "from",
          "type": "address"
        },
        {
          "indexed": true,
          "name": "to",
          "type": "address"
        },
        {
          "indexed": false,
          "name": "value",
          "type": "uint256"
        }
      ],
      "name": "Transfer",
      "type": "event"
    },
    {
      "anonymous": false,
      "inputs": [
        {
          "indexed": true,
          "name": "owner",
          "type": "address"
        },
        {
          "indexed": true,
          "name": "spender",
          "type": "address"
        },
        {
          "indexed": false,
          "name": "value",
          "type": "uint256"
        }
      ],
      "name": "Approval",
      "type": "event"
    },
    {
      "constant": true,
      "inputs": [],
      "name": "totalSupply",
      "outputs": [
        {
          "name": "",
          "type": "uint256"
        }
      ],
      "payable": false,
      "stateMutability": "view",
      "type": "function"
    },
    {
      "constant": true,
      "inputs": [
        {
          "name": "who",
          "type": "address"
        }
      ],
      "name": "balanceOf",
      "outputs": [
        {
          "name": "",
          "type": "uint256"
        }
      ],
      "payable": false,
      "stateMutability": "view",
      "type": "function"
    },
    {
      "constant": true,
      "inputs": [
        {
          "name": "owner",
          "type": "address"
        },
        {
          "name": "spender",
          "type": "address"
        }
      ],
      "name": "allowance",
      "outputs": [
        {
          "name": "",
          "type": "uint256"
        }
      ],
      "payable": false,
      "stateMutability": "view",
      "type": "function"
    },
    {
      "constant": false,
      "inputs": [
        {
          "name": "to",
          "type": "address"
        },
        {
          "name": "value",
          "type": "uint256"
        }
      ],
      "name": "transfer",
      "outputs": [
        {
          "name": "",
          "type": "bool"
        }
      ],
      "payable": false,
      "stateMutability": "nonpayable",
      "type": "function"
    },
    {
      "constant": false,
      "inputs": [
        {
          "name": "spender",
          "type": "address"
        },
        {
          "name": "value",
          "type": "uint256"
        }
      ],
      "name": "approve",
      "outputs": [
        {
          "name": "",
          "type": "bool"
        }
      ],
      "payable": false,
      "stateMutability": "nonpayable",
      "type": "function"
    },
    {
      "constant": false,
      "inputs": [
        {
          "name": "from",
          "type": "address"
        },
        {
          "name": "to",
          "type": "address"
        },
        {
          "name": "value",
          "type": "uint256"
        }
      ],
      "name": "transferFrom",
      "outputs": [
        {
          "name": "",
          "type": "bool"
        }
      ],
      "payable": false,
      "stateMutability": "nonpayable",
      "type": "function"
    }
  ],
  "bytecode": "0x",
  "deployedBytecode": "0x",
  "sourceMap": "",
  "deployedSourceMap": "",
  "source": "pragma solidity ^0.4.24;\n\n/**\n * @title ERC20 interface\n * @dev see https://github.com/ethereum/EIPs/issues/20\n */\ninterface IERC20 {\n  function totalSupply() external view returns (uint256);\n\n  function balanceOf(address who) external view returns (uint256);\n\n  function allowance(address owner, address spender)\n    external view returns (uint256);\n\n  function transfer(address to, uint256 value) external returns (bool);\n\n  function approve(address spender, uint256 value)\n    external returns (bool);\n\n  function transferFrom(address from, address to, uint256 value)\n    external returns (bool);\n\n  event Transfer(\n    address indexed from,\n    address indexed to,\n    uint256 value\n  );\n\n  event Approval(\n    address indexed owner,\n    address indexed spender,\n    uint256 value\n  );\n}\n",
  "sourcePath": "openzeppelin-solidity/contracts/token/ERC20/IERC20.sol",
  "ast": {
    "absolutePath": "openzeppelin-solidity/contracts/token/ERC20/IERC20.sol",
    "exportedSymbols": {
      "IERC20": [
        1798
      ]
    },
    "id": 1799,
    "nodeType": "SourceUnit",
    "nodes": [
      {
        "id": 1731,
        "literals": [
          "solidity",
          "^",
          "0.4",
          ".24"
        ],
        "nodeType": "PragmaDirective",
        "src": "0:24:10"
      },
      {
        "baseContracts": [],
        "contractDependencies": [],
        "contractKind": "interface",
        "documentation": "@title ERC20 interface\n@dev see https://github.com/ethereum/EIPs/issues/20",
        "fullyImplemented": false,
        "id": 1798,
        "linearizedBaseContracts": [
          1798
        ],
        "name": "IERC20",
        "nodeType": "ContractDefinition",
        "nodes": [
          {
            "body": null,
            "documentation": null,
            "id": 1736,
            "implemented": false,
            "isConstructor": false,
            "isDeclaredConst": true,
            "modifiers": [],
            "name": "totalSupply",
            "nodeType": "FunctionDefinition",
            "parameters": {
              "id": 1732,
              "nodeType": "ParameterList",
              "parameters": [],
              "src": "156:2:10"
            },
            "payable": false,
            "returnParameters": {
              "id": 1735,
              "nodeType": "ParameterList",
              "parameters": [
                {
                  "constant": false,
                  "id": 1734,
                  "name": "",
                  "nodeType": "VariableDeclaration",
                  "scope": 1736,
                  "src": "182:7:10",
                  "stateVariable": false,
                  "storageLocation": "default",
                  "typeDescriptions": {
                    "typeIdentifier": "t_uint256",
                    "typeString": "uint256"
                  },
                  "typeName": {
                    "id": 1733,
                    "name": "uint256",
                    "nodeType": "ElementaryTypeName",
                    "src": "182:7:10",
                    "typeDescriptions": {
                      "typeIdentifier": "t_uint256",
                      "typeString": "uint256"
                    }
                  },
                  "value": null,
                  "visibility": "internal"
                }
              ],
              "src": "181:9:10"
            },
            "scope": 1798,
            "src": "136:55:10",
            "stateMutability": "view",
            "superFunction": null,
            "visibility": "external"
          },
          {
            "body": null,
            "documentation": null,
            "id": 1743,
            "implemented": false,
            "isConstructor": false,
            "isDeclaredConst": true,
            "modifiers": [],
            "name": "balanceOf",
            "nodeType": "FunctionDefinition",
            "parameters": {
              "id": 1739,
              "nodeType": "ParameterList",
              "parameters": [
                {
                  "constant": false,
                  "id": 1738,
                  "name": "who",
                  "nodeType": "VariableDeclaration",
                  "scope": 1743,
                  "src": "214:11:10",
                  "stateVariable": false,
                  "storageLocation": "default",
                  "typeDescriptions": {
                    "typeIdentifier": "t_address",
                    "typeString": "address"
                  },
                  "typeName": {
                    "id": 1737,
                    "name": "address",
                    "nodeType": "ElementaryTypeName",
                    "src": "214:7:10",
                    "typeDescriptions": {
                      "typeIdentifier": "t_address",
                      "typeString": "address"
                    }
                  },
                  "value": null,
                  "visibility": "internal"
                }
              ],
              "src": "213:13:10"
            },
            "payable": false,
            "returnParameters": {
              "id": 1742,
              "nodeType": "ParameterList",
              "parameters": [
                {
                  "constant": false,
                  "id": 1741,
                  "name": "",
                  "nodeType": "VariableDeclaration",
                  "scope": 1743,
                  "src": "250:7:10",
                  "stateVariable": false,
                  "storageLocation": "default",
                  "typeDescriptions": {
                    "typeIdentifier": "t_uint256",
                    "typeString": "uint256"
                  },
                  "typeName": {
                    "id": 1740,
                    "name": "uint256",
                    "nodeType": "ElementaryTypeName",
                    "src": "250:7:10",
                    "typeDescriptions": {
                      "typeIdentifier": "t_uint256",
                      "typeString": "uint256"
                    }
                  },
                  "value": null,
                  "visibility": "internal"
                }
              ],
              "src": "249:9:10"
            },
            "scope": 1798,
            "src": "195:64:10",
            "stateMutability": "view",
            "superFunction": null,
            "visibility": "external"
          },
          {
            "body": null,
            "documentation": null,
            "id": 1752,
            "implemented": false,
            "isConstructor": false,
            "isDeclaredConst": true,
            "modifiers": [],
            "name": "allowance",
            "nodeType": "FunctionDefinition",
            "parameters": {
              "id": 1748,
              "nodeType": "ParameterList",
              "parameters": [
                {
                  "constant": false,
                  "id": 1745,
                  "name": "owner",
                  "nodeType": "VariableDeclaration",
                  "scope": 1752,
                  "src": "282:13:10",
                  "stateVariable": false,
                  "storageLocation": "default",
                  "typeDescriptions": {
                    "typeIdentifier": "t_address",
                    "typeString": "address"
                  },
                  "typeName": {
                    "id": 1744,
                    "name": "address",
                    "nodeType": "ElementaryTypeName",
                    "src": "282:7:10",
                    "typeDescriptions": {
                      "typeIdentifier": "t_address",
                      "typeString": "address"
                    }
                  },
                  "value": null,
                  "visibility": "internal"
                },
                {
                  "constant": false,
                  "id": 1747,
                  "name": "spender",
                  "nodeType": "VariableDeclaration",
                  "scope": 1752,
                  "src": "297:15:10",
                  "stateVariable": false,
                  "storageLocation": "default",
                  "typeDescriptions": {
                    "typeIdentifier": "t_address",
                    "typeString": "address"
                  },
                  "typeName": {
                    "id": 1746,
                    "name": "address",
                    "nodeType": "ElementaryTypeName",
                    "src": "297:7:10",
                    "typeDescriptions": {
                      "typeIdentifier": "t_address",
                      "typeString": "address"
                    }
                  },
                  "value": null,
                  "visibility": "internal"
                }
              ],
              "src": "281:32:10"
            },
            "payable": false,
            "returnParameters": {
              "id": 1751,
              "nodeType": "ParameterList",
              "parameters": [
                {
                  "constant": false,
                  "id": 1750,
                  "name": "",
                  "nodeType": "VariableDeclaration",
                  "scope": 1752,
                  "src": "341:7:10",
                  "stateVariable": false,
                  "storageLocation": "default",
                  "typeDescriptions": {
                    "typeIdentifier": "t_uint256",
                    "typeString": "uint256"
                  },
                  "typeName": {
                    "id": 1749,
                    "name": "uint256",
                    "nodeType": "ElementaryTypeName",
                    "src": "341:7:10",
                    "typeDescriptions": {
                      "typeIdentifier": "t_uint256",
                      "typeString": "uint256"
                    }
                  },
                  "value": null,
                  "visibility": "internal"
                }
              ],
              "src": "340:9:10"
            },
            "scope": 1798,
            "src": "263:87:10",
            "stateMutability": "view",
            "superFunction": null,
            "visibility": "external"
          },
          {
            "body": null,
            "documentation": null,
            "id": 1761,
            "implemented": false,
            "isConstructor": false,
            "isDeclaredConst": false,
            "modifiers": [],
            "name": "transfer",
            "nodeType": "FunctionDefinition",
            "parameters": {
              "id": 1757,
              "nodeType": "ParameterList",
              "parameters": [
                {
                  "constant": false,
                  "id": 1754,
                  "name": "to",
                  "nodeType": "VariableDeclaration",
                  "scope": 1761,
                  "src": "372:10:10",
                  "stateVariable": false,
                  "storageLocation": "default",
                  "typeDescriptions": {
                    "typeIdentifier": "t_address",
                    "typeString": "address"
                  },
                  "typeName": {
                    "id": 1753,
                    "name": "address",
                    "nodeType": "ElementaryTypeName",
                    "src": "372:7:10",
                    "typeDescriptions": {
                      "typeIdentifier": "t_address",
                      "typeString": "address"
                    }
                  },
                  "value": null,
                  "visibility": "internal"
                },
                {
                  "constant": false,
                  "id": 1756,
                  "name": "value",
                  "nodeType": "VariableDeclaration",
                  "scope": 1761,
                  "src": "384:13:10",
                  "stateVariable": false,
                  "storageLocation": "default",
                  "typeDescriptions": {
                    "typeIdentifier": "t_uint256",
                    "typeString": "uint256"
                  },
                  "typeName": {
                    "id": 1755,
                    "name": "uint256",
                    "nodeType": "ElementaryTypeName",
                    "src": "384:7:10",
                    "typeDescriptions": {
                      "typeIdentifier": "t_uint256",
                      "typeString": "uint256"
                    }
                  },
                  "value": null,
                  "visibility": "internal"
                }
              ],
              "src": "371:27:10"
            },
            "payable": false,
            "returnParameters": {
              "id": 1760,
              "nodeType": "ParameterList",
              "parameters": [
                {
                  "constant": false,
                  "id": 1759,
                  "name": "",
                  "nodeType": "VariableDeclaration",
                  "scope": 1761,
                  "src": "417:4:10",
                  "stateVariable": false,
                  "storageLocation": "default",
                  "typeDescriptions": {
                    "typeIdentifier": "t_bool",
                    "typeString": "bool"
                  },
                  "typeName": {
                    "id": 1758,
                    "name": "bool",
                    "nodeType": "ElementaryTypeName",
                    "src": "417:4:10",
                    "typeDescriptions": {
                      "typeIdentifier": "t_bool",
                      "typeString": "bool"
                    }
                  },
                  "value": null,
                  "visibility": "internal"
                }
              ],
              "src": "416:6:10"
            },
            "scope": 1798,
            "src": "354:69:10",
            "stateMutability": "nonpayable",
            "superFunction": null,
            "visibility": "external"
          },
          {
            "body": null,
            "documentation": null,
            "id": 1770,
            "implemented": false,
            "isConstructor": false,
            "isDeclaredConst": false,
            "modifiers": [],
            "name": "approve",
            "nodeType": "FunctionDefinition",
            "parameters": {
              "id": 1766,
              "nodeType": "ParameterList",
              "parameters": [
                {
                  "constant": false,
                  "id": 1763,
                  "name": "spender",
                  "nodeType": "VariableDeclaration",
                  "scope": 1770,
                  "src": "444:15:10",
                  "stateVariable": false,
                  "storageLocation": "default",
                  "typeDescriptions": {
                    "typeIdentifier": "t_address",
                    "typeString": "address"
                  },
                  "typeName": {
                    "id": 1762,
                    "name": "address",
                    "nodeType": "ElementaryTypeName",
                    "src": "444:7:10",
                    "typeDescriptions": {
                      "typeIdentifier": "t_address",
                      "typeString": "address"
                    }
                  },
                  "value": null,
                  "visibility": "internal"
                },
                {
                  "constant": false,
                  "id": 1765,
                  "name": "value",
                  "nodeType": "VariableDeclaration",
                  "scope": 1770,
                  "src": "461:13:10",
                  "stateVariable": false,
                  "storageLocation": "default",
                  "typeDescriptions": {
                    "typeIdentifier": "t_uint256",
                    "typeString": "uint256"
                  },
                  "typeName": {
                    "id": 1764,
                    "name": "uint256",
                    "nodeType": "ElementaryTypeName",
                    "src": "461:7:10",
                    "typeDescriptions": {
                      "typeIdentifier": "t_uint256",
                      "typeString": "uint256"
                    }
                  },
                  "value": null,
                  "visibility": "internal"
                }
              ],
              "src": "443:32:10"
            },
            "payable": false,
            "returnParameters": {
              "id": 1769,
              "nodeType": "ParameterList",
              "parameters": [
                {
                  "constant": false,
                  "id": 1768,
                  "name": "",
                  "nodeType": "VariableDeclaration",
                  "scope": 1770,
                  "src": "498:4:10",
                  "stateVariable": false,
                  "storageLocation": "default",
                  "typeDescriptions": {
                    "typeIdentifier": "t_bool",
                    "typeString": "bool"
                  },
                  "typeName": {
                    "id": 1767,
                    "name": "bool",
                    "nodeType": "ElementaryTypeName",
                    "src": "498:4:10",
                    "typeDescriptions": {
                      "typeIdentifier": "t_bool",
                      "typeString": "bool"
                    }
                  },
                  "value": null,
                  "visibility": "internal"
                }
              ],
              "src": "497:6:10"
            },
            "scope": 1798,
            "src": "427:77:10",
            "stateMutability": "nonpayable",
            "superFunction": null,
            "visibility": "external"
          },
          {
            "body": null,
            "documentation": null,
            "id": 1781,
            "implemented": false,
            "isConstructor": false,
            "isDeclaredConst": false,
            "modifiers": [],
            "name": "transferFrom",
            "nodeType": "FunctionDefinition",
            "parameters": {
              "id": 1777,
              "nodeType": "ParameterList",
              "parameters": [
                {
                  "constant": false,
                  "id": 1772,
                  "name": "from",
                  "nodeType": "VariableDeclaration",
                  "scope": 1781,
                  "src": "530:12:10",
                  "stateVariable": false,
                  "storageLocation": "default",
                  "typeDescriptions": {
                    "typeIdentifier": "t_address",
                    "typeString": "address"
                  },
                  "typeName": {
                    "id": 1771,
                    "name": "address",
                    "nodeType": "ElementaryTypeName",
                    "src": "530:7:10",
                    "typeDescriptions": {
                      "typeIdentifier": "t_address",
                      "typeString": "address"
                    }
                  },
                  "value": null,
                  "visibility": "internal"
                },
                {
                  "constant": false,
                  "id": 1774,
                  "name": "to",
                  "nodeType": "VariableDeclaration",
                  "scope": 1781,
                  "src": "544:10:10",
                  "stateVariable": false,
                  "storageLocation": "default",
                  "typeDescriptions": {
                    "typeIdentifier": "t_address",
                    "typeString": "address"
                  },
                  "typeName": {
                    "id": 1773,
                    "name": "address",
                    "nodeType": "ElementaryTypeName",
                    "src": "544:7:10",
                    "typeDescriptions": {
                      "typeIdentifier": "t_address",
                      "typeString": "address"
                    }
                  },
                  "value": null,
                  "visibility": "internal"
                },
                {
                  "constant": false,
                  "id": 1776,
                  "name": "value",
                  "nodeType": "VariableDeclaration",
                  "scope": 1781,
                  "src": "556:13:10",
                  "stateVariable": false,
                  "storageLocation": "default",
                  "typeDescriptions": {
                    "typeIdentifier": "t_uint256",
                    "typeString": "uint256"
                  },
                  "typeName": {
                    "id": 1775,
                    "name": "uint256",
                    "nodeType": "ElementaryTypeName",
                    "src": "556:7:10",
                    "typeDescriptions": {
                      "typeIdentifier": "t_uint256",
                      "typeString": "uint256"
                    }
                  },
                  "value": null,
                  "visibility": "internal"
                }
              ],
              "src": "529:41:10"
            },
            "payable": false,
            "returnParameters": {
              "id": 1780,
              "nodeType": "ParameterList",
              "parameters": [
                {
                  "constant": false,
                  "id": 1779,
                  "name": "",
                  "nodeType": "VariableDeclaration",
                  "scope": 1781,
                  "src": "593:4:10",
                  "stateVariable": false,
                  "storageLocation": "default",
                  "typeDescriptions": {
                    "typeIdentifier": "t_bool",
                    "typeString": "bool"
                  },
                  "typeName": {
                    "id": 1778,
                    "name": "bool",
                    "nodeType": "ElementaryTypeName",
                    "src": "593:4:10",
                    "typeDescriptions": {
                      "typeIdentifier": "t_bool",
                      "typeString": "bool"
                    }
                  },
                  "value": null,
                  "visibility": "internal"
                }
              ],
              "src": "592:6:10"
            },
            "scope": 1798,
            "src": "508:91:10",
            "stateMutability": "nonpayable",
            "superFunction": null,
            "visibility": "external"
          },
          {
            "anonymous": false,
            "documentation": null,
            "id": 1789,
            "name": "Transfer",
            "nodeType": "EventDefinition",
            "parameters": {
              "id": 1788,
              "nodeType": "ParameterList",
              "parameters": [
                {
                  "constant": false,
                  "id": 1783,
                  "indexed": true,
                  "name": "from",
                  "nodeType": "VariableDeclaration",
                  "scope": 1789,
                  "src": "623:20:10",
                  "stateVariable": false,
                  "storageLocation": "default",
                  "typeDescriptions": {
                    "typeIdentifier": "t_address",
                    "typeString": "address"
                  },
                  "typeName": {
                    "id": 1782,
                    "name": "address",
                    "nodeType": "ElementaryTypeName",
                    "src": "623:7:10",
                    "typeDescriptions": {
                      "typeIdentifier": "t_address",
                      "typeString": "address"
                    }
                  },
                  "value": null,
                  "visibility": "internal"
                },
                {
                  "constant": false,
                  "id": 1785,
                  "indexed": true,
                  "name": "to",
                  "nodeType": "VariableDeclaration",
                  "scope": 1789,
                  "src": "649:18:10",
                  "stateVariable": false,
                  "storageLocation": "default",
                  "typeDescriptions": {
                    "typeIdentifier": "t_address",
                    "typeString": "address"
                  },
                  "typeName": {
                    "id": 1784,
                    "name": "address",
                    "nodeType": "ElementaryTypeName",
                    "src": "649:7:10",
                    "typeDescriptions": {
                      "typeIdentifier": "t_address",
                      "typeString": "address"
                    }
                  },
                  "value": null,
                  "visibility": "internal"
                },
                {
                  "constant": false,
                  "id": 1787,
                  "indexed": false,
                  "name": "value",
                  "nodeType": "VariableDeclaration",
                  "scope": 1789,
                  "src": "673:13:10",
                  "stateVariable": false,
                  "storageLocation": "default",
                  "typeDescriptions": {
                    "typeIdentifier": "t_uint256",
                    "typeString": "uint256"
                  },
                  "typeName": {
                    "id": 1786,
                    "name": "uint256",
                    "nodeType": "ElementaryTypeName",
                    "src": "673:7:10",
                    "typeDescriptions": {
                      "typeIdentifier": "t_uint256",
                      "typeString": "uint256"
                    }
                  },
                  "value": null,
                  "visibility": "internal"
                }
              ],
              "src": "617:73:10"
            },
            "src": "603:88:10"
          },
          {
            "anonymous": false,
            "documentation": null,
            "id": 1797,
            "name": "Approval",
            "nodeType": "EventDefinition",
            "parameters": {
              "id": 1796,
              "nodeType": "ParameterList",
              "parameters": [
                {
                  "constant": false,
                  "id": 1791,
                  "indexed": true,
                  "name": "owner",
                  "nodeType": "VariableDeclaration",
                  "scope": 1797,
                  "src": "715:21:10",
                  "stateVariable": false,
                  "storageLocation": "default",
                  "typeDescriptions": {
                    "typeIdentifier": "t_address",
                    "typeString": "address"
                  },
                  "typeName": {
                    "id": 1790,
                    "name": "address",
                    "nodeType": "ElementaryTypeName",
                    "src": "715:7:10",
                    "typeDescriptions": {
                      "typeIdentifier": "t_address",
                      "typeString": "address"
                    }
                  },
                  "value": null,
                  "visibility": "internal"
                },
                {
                  "constant": false,
                  "id": 1793,
                  "indexed": true,
                  "name": "spender",
                  "nodeType": "VariableDeclaration",
                  "scope": 1797,
                  "src": "742:23:10",
                  "stateVariable": false,
                  "storageLocation": "default",
                  "typeDescriptions": {
                    "typeIdentifier": "t_address",
                    "typeString": "address"
                  },
                  "typeName": {
                    "id": 1792,
                    "name": "address",
                    "nodeType": "ElementaryTypeName",
                    "src": "742:7:10",
                    "typeDescriptions": {
                      "typeIdentifier": "t_address",
                      "typeString": "address"
                    }
                  },
                  "value": null,
                  "visibility": "internal"
                },
                {
                  "constant": false,
                  "id": 1795,
                  "indexed": false,
                  "name": "value",
                  "nodeType": "VariableDeclaration",
                  "scope": 1797,
                  "src": "771:13:10",
                  "stateVariable": false,
                  "storageLocation": "default",
                  "typeDescriptions": {
                    "typeIdentifier": "t_uint256",
                    "typeString": "uint256"
                  },
                  "typeName": {
                    "id": 1794,
                    "name": "uint256",
                    "nodeType": "ElementaryTypeName",
                    "src": "771:7:10",
                    "typeDescriptions": {
                      "typeIdentifier": "t_uint256",
                      "typeString": "uint256"
                    }
                  },
                  "value": null,
                  "visibility": "internal"
                }
              ],
              "src": "709:79:10"
            },
            "src": "695:94:10"
          }
        ],
        "scope": 1799,
        "src": "115:676:10"
      }
    ],
    "src": "0:792:10"
  },
  "legacyAST": {
    "absolutePath": "openzeppelin-solidity/contracts/token/ERC20/IERC20.sol",
    "exportedSymbols": {
      "IERC20": [
        1798
      ]
    },
    "id": 1799,
    "nodeType": "SourceUnit",
    "nodes": [
      {
        "id": 1731,
        "literals": [
          "solidity",
          "^",
          "0.4",
          ".24"
        ],
        "nodeType": "PragmaDirective",
        "src": "0:24:10"
      },
      {
        "baseContracts": [],
        "contractDependencies": [],
        "contractKind": "interface",
        "documentation": "@title ERC20 interface\n@dev see https://github.com/ethereum/EIPs/issues/20",
        "fullyImplemented": false,
        "id": 1798,
        "linearizedBaseContracts": [
          1798
        ],
        "name": "IERC20",
        "nodeType": "ContractDefinition",
        "nodes": [
          {
            "body": null,
            "documentation": null,
            "id": 1736,
            "implemented": false,
            "isConstructor": false,
            "isDeclaredConst": true,
            "modifiers": [],
            "name": "totalSupply",
            "nodeType": "FunctionDefinition",
            "parameters": {
              "id": 1732,
              "nodeType": "ParameterList",
              "parameters": [],
              "src": "156:2:10"
            },
            "payable": false,
            "returnParameters": {
              "id": 1735,
              "nodeType": "ParameterList",
              "parameters": [
                {
                  "constant": false,
                  "id": 1734,
                  "name": "",
                  "nodeType": "VariableDeclaration",
                  "scope": 1736,
                  "src": "182:7:10",
                  "stateVariable": false,
                  "storageLocation": "default",
                  "typeDescriptions": {
                    "typeIdentifier": "t_uint256",
                    "typeString": "uint256"
                  },
                  "typeName": {
                    "id": 1733,
                    "name": "uint256",
                    "nodeType": "ElementaryTypeName",
                    "src": "182:7:10",
                    "typeDescriptions": {
                      "typeIdentifier": "t_uint256",
                      "typeString": "uint256"
                    }
                  },
                  "value": null,
                  "visibility": "internal"
                }
              ],
              "src": "181:9:10"
            },
            "scope": 1798,
            "src": "136:55:10",
            "stateMutability": "view",
            "superFunction": null,
            "visibility": "external"
          },
          {
            "body": null,
            "documentation": null,
            "id": 1743,
            "implemented": false,
            "isConstructor": false,
            "isDeclaredConst": true,
            "modifiers": [],
            "name": "balanceOf",
            "nodeType": "FunctionDefinition",
            "parameters": {
              "id": 1739,
              "nodeType": "ParameterList",
              "parameters": [
                {
                  "constant": false,
                  "id": 1738,
                  "name": "who",
                  "nodeType": "VariableDeclaration",
                  "scope": 1743,
                  "src": "214:11:10",
                  "stateVariable": false,
                  "storageLocation": "default",
                  "typeDescriptions": {
                    "typeIdentifier": "t_address",
                    "typeString": "address"
                  },
                  "typeName": {
                    "id": 1737,
                    "name": "address",
                    "nodeType": "ElementaryTypeName",
                    "src": "214:7:10",
                    "typeDescriptions": {
                      "typeIdentifier": "t_address",
                      "typeString": "address"
                    }
                  },
                  "value": null,
                  "visibility": "internal"
                }
              ],
              "src": "213:13:10"
            },
            "payable": false,
            "returnParameters": {
              "id": 1742,
              "nodeType": "ParameterList",
              "parameters": [
                {
                  "constant": false,
                  "id": 1741,
                  "name": "",
                  "nodeType": "VariableDeclaration",
                  "scope": 1743,
                  "src": "250:7:10",
                  "stateVariable": false,
                  "storageLocation": "default",
                  "typeDescriptions": {
                    "typeIdentifier": "t_uint256",
                    "typeString": "uint256"
                  },
                  "typeName": {
                    "id": 1740,
                    "name": "uint256",
                    "nodeType": "ElementaryTypeName",
                    "src": "250:7:10",
                    "typeDescriptions": {
                      "typeIdentifier": "t_uint256",
                      "typeString": "uint256"
                    }
                  },
                  "value": null,
                  "visibility": "internal"
                }
              ],
              "src": "249:9:10"
            },
            "scope": 1798,
            "src": "195:64:10",
            "stateMutability": "view",
            "superFunction": null,
            "visibility": "external"
          },
          {
            "body": null,
            "documentation": null,
            "id": 1752,
            "implemented": false,
            "isConstructor": false,
            "isDeclaredConst": true,
            "modifiers": [],
            "name": "allowance",
            "nodeType": "FunctionDefinition",
            "parameters": {
              "id": 1748,
              "nodeType": "ParameterList",
              "parameters": [
                {
                  "constant": false,
                  "id": 1745,
                  "name": "owner",
                  "nodeType": "VariableDeclaration",
                  "scope": 1752,
                  "src": "282:13:10",
                  "stateVariable": false,
                  "storageLocation": "default",
                  "typeDescriptions": {
                    "typeIdentifier": "t_address",
                    "typeString": "address"
                  },
                  "typeName": {
                    "id": 1744,
                    "name": "address",
                    "nodeType": "ElementaryTypeName",
                    "src": "282:7:10",
                    "typeDescriptions": {
                      "typeIdentifier": "t_address",
                      "typeString": "address"
                    }
                  },
                  "value": null,
                  "visibility": "internal"
                },
                {
                  "constant": false,
                  "id": 1747,
                  "name": "spender",
                  "nodeType": "VariableDeclaration",
                  "scope": 1752,
                  "src": "297:15:10",
                  "stateVariable": false,
                  "storageLocation": "default",
                  "typeDescriptions": {
                    "typeIdentifier": "t_address",
                    "typeString": "address"
                  },
                  "typeName": {
                    "id": 1746,
                    "name": "address",
                    "nodeType": "ElementaryTypeName",
                    "src": "297:7:10",
                    "typeDescriptions": {
                      "typeIdentifier": "t_address",
                      "typeString": "address"
                    }
                  },
                  "value": null,
                  "visibility": "internal"
                }
              ],
              "src": "281:32:10"
            },
            "payable": false,
            "returnParameters": {
              "id": 1751,
              "nodeType": "ParameterList",
              "parameters": [
                {
                  "constant": false,
                  "id": 1750,
                  "name": "",
                  "nodeType": "VariableDeclaration",
                  "scope": 1752,
                  "src": "341:7:10",
                  "stateVariable": false,
                  "storageLocation": "default",
                  "typeDescriptions": {
                    "typeIdentifier": "t_uint256",
                    "typeString": "uint256"
                  },
                  "typeName": {
                    "id": 1749,
                    "name": "uint256",
                    "nodeType": "ElementaryTypeName",
                    "src": "341:7:10",
                    "typeDescriptions": {
                      "typeIdentifier": "t_uint256",
                      "typeString": "uint256"
                    }
                  },
                  "value": null,
                  "visibility": "internal"
                }
              ],
              "src": "340:9:10"
            },
            "scope": 1798,
            "src": "263:87:10",
            "stateMutability": "view",
            "superFunction": null,
            "visibility": "external"
          },
          {
            "body": null,
            "documentation": null,
            "id": 1761,
            "implemented": false,
            "isConstructor": false,
            "isDeclaredConst": false,
            "modifiers": [],
            "name": "transfer",
            "nodeType": "FunctionDefinition",
            "parameters": {
              "id": 1757,
              "nodeType": "ParameterList",
              "parameters": [
                {
                  "constant": false,
                  "id": 1754,
                  "name": "to",
                  "nodeType": "VariableDeclaration",
                  "scope": 1761,
                  "src": "372:10:10",
                  "stateVariable": false,
                  "storageLocation": "default",
                  "typeDescriptions": {
                    "typeIdentifier": "t_address",
                    "typeString": "address"
                  },
                  "typeName": {
                    "id": 1753,
                    "name": "address",
                    "nodeType": "ElementaryTypeName",
                    "src": "372:7:10",
                    "typeDescriptions": {
                      "typeIdentifier": "t_address",
                      "typeString": "address"
                    }
                  },
                  "value": null,
                  "visibility": "internal"
                },
                {
                  "constant": false,
                  "id": 1756,
                  "name": "value",
                  "nodeType": "VariableDeclaration",
                  "scope": 1761,
                  "src": "384:13:10",
                  "stateVariable": false,
                  "storageLocation": "default",
                  "typeDescriptions": {
                    "typeIdentifier": "t_uint256",
                    "typeString": "uint256"
                  },
                  "typeName": {
                    "id": 1755,
                    "name": "uint256",
                    "nodeType": "ElementaryTypeName",
                    "src": "384:7:10",
                    "typeDescriptions": {
                      "typeIdentifier": "t_uint256",
                      "typeString": "uint256"
                    }
                  },
                  "value": null,
                  "visibility": "internal"
                }
              ],
              "src": "371:27:10"
            },
            "payable": false,
            "returnParameters": {
              "id": 1760,
              "nodeType": "ParameterList",
              "parameters": [
                {
                  "constant": false,
                  "id": 1759,
                  "name": "",
                  "nodeType": "VariableDeclaration",
                  "scope": 1761,
                  "src": "417:4:10",
                  "stateVariable": false,
                  "storageLocation": "default",
                  "typeDescriptions": {
                    "typeIdentifier": "t_bool",
                    "typeString": "bool"
                  },
                  "typeName": {
                    "id": 1758,
                    "name": "bool",
                    "nodeType": "ElementaryTypeName",
                    "src": "417:4:10",
                    "typeDescriptions": {
                      "typeIdentifier": "t_bool",
                      "typeString": "bool"
                    }
                  },
                  "value": null,
                  "visibility": "internal"
                }
              ],
              "src": "416:6:10"
            },
            "scope": 1798,
            "src": "354:69:10",
            "stateMutability": "nonpayable",
            "superFunction": null,
            "visibility": "external"
          },
          {
            "body": null,
            "documentation": null,
            "id": 1770,
            "implemented": false,
            "isConstructor": false,
            "isDeclaredConst": false,
            "modifiers": [],
            "name": "approve",
            "nodeType": "FunctionDefinition",
            "parameters": {
              "id": 1766,
              "nodeType": "ParameterList",
              "parameters": [
                {
                  "constant": false,
                  "id": 1763,
                  "name": "spender",
                  "nodeType": "VariableDeclaration",
                  "scope": 1770,
                  "src": "444:15:10",
                  "stateVariable": false,
                  "storageLocation": "default",
                  "typeDescriptions": {
                    "typeIdentifier": "t_address",
                    "typeString": "address"
                  },
                  "typeName": {
                    "id": 1762,
                    "name": "address",
                    "nodeType": "ElementaryTypeName",
                    "src": "444:7:10",
                    "typeDescriptions": {
                      "typeIdentifier": "t_address",
                      "typeString": "address"
                    }
                  },
                  "value": null,
                  "visibility": "internal"
                },
                {
                  "constant": false,
                  "id": 1765,
                  "name": "value",
                  "nodeType": "VariableDeclaration",
                  "scope": 1770,
                  "src": "461:13:10",
                  "stateVariable": false,
                  "storageLocation": "default",
                  "typeDescriptions": {
                    "typeIdentifier": "t_uint256",
                    "typeString": "uint256"
                  },
                  "typeName": {
                    "id": 1764,
                    "name": "uint256",
                    "nodeType": "ElementaryTypeName",
                    "src": "461:7:10",
                    "typeDescriptions": {
                      "typeIdentifier": "t_uint256",
                      "typeString": "uint256"
                    }
                  },
                  "value": null,
                  "visibility": "internal"
                }
              ],
              "src": "443:32:10"
            },
            "payable": false,
            "returnParameters": {
              "id": 1769,
              "nodeType": "ParameterList",
              "parameters": [
                {
                  "constant": false,
                  "id": 1768,
                  "name": "",
                  "nodeType": "VariableDeclaration",
                  "scope": 1770,
                  "src": "498:4:10",
                  "stateVariable": false,
                  "storageLocation": "default",
                  "typeDescriptions": {
                    "typeIdentifier": "t_bool",
                    "typeString": "bool"
                  },
                  "typeName": {
                    "id": 1767,
                    "name": "bool",
                    "nodeType": "ElementaryTypeName",
                    "src": "498:4:10",
                    "typeDescriptions": {
                      "typeIdentifier": "t_bool",
                      "typeString": "bool"
                    }
                  },
                  "value": null,
                  "visibility": "internal"
                }
              ],
              "src": "497:6:10"
            },
            "scope": 1798,
            "src": "427:77:10",
            "stateMutability": "nonpayable",
            "superFunction": null,
            "visibility": "external"
          },
          {
            "body": null,
            "documentation": null,
            "id": 1781,
            "implemented": false,
            "isConstructor": false,
            "isDeclaredConst": false,
            "modifiers": [],
            "name": "transferFrom",
            "nodeType": "FunctionDefinition",
            "parameters": {
              "id": 1777,
              "nodeType": "ParameterList",
              "parameters": [
                {
                  "constant": false,
                  "id": 1772,
                  "name": "from",
                  "nodeType": "VariableDeclaration",
                  "scope": 1781,
                  "src": "530:12:10",
                  "stateVariable": false,
                  "storageLocation": "default",
                  "typeDescriptions": {
                    "typeIdentifier": "t_address",
                    "typeString": "address"
                  },
                  "typeName": {
                    "id": 1771,
                    "name": "address",
                    "nodeType": "ElementaryTypeName",
                    "src": "530:7:10",
                    "typeDescriptions": {
                      "typeIdentifier": "t_address",
                      "typeString": "address"
                    }
                  },
                  "value": null,
                  "visibility": "internal"
                },
                {
                  "constant": false,
                  "id": 1774,
                  "name": "to",
                  "nodeType": "VariableDeclaration",
                  "scope": 1781,
                  "src": "544:10:10",
                  "stateVariable": false,
                  "storageLocation": "default",
                  "typeDescriptions": {
                    "typeIdentifier": "t_address",
                    "typeString": "address"
                  },
                  "typeName": {
                    "id": 1773,
                    "name": "address",
                    "nodeType": "ElementaryTypeName",
                    "src": "544:7:10",
                    "typeDescriptions": {
                      "typeIdentifier": "t_address",
                      "typeString": "address"
                    }
                  },
                  "value": null,
                  "visibility": "internal"
                },
                {
                  "constant": false,
                  "id": 1776,
                  "name": "value",
                  "nodeType": "VariableDeclaration",
                  "scope": 1781,
                  "src": "556:13:10",
                  "stateVariable": false,
                  "storageLocation": "default",
                  "typeDescriptions": {
                    "typeIdentifier": "t_uint256",
                    "typeString": "uint256"
                  },
                  "typeName": {
                    "id": 1775,
                    "name": "uint256",
                    "nodeType": "ElementaryTypeName",
                    "src": "556:7:10",
                    "typeDescriptions": {
                      "typeIdentifier": "t_uint256",
                      "typeString": "uint256"
                    }
                  },
                  "value": null,
                  "visibility": "internal"
                }
              ],
              "src": "529:41:10"
            },
            "payable": false,
            "returnParameters": {
              "id": 1780,
              "nodeType": "ParameterList",
              "parameters": [
                {
                  "constant": false,
                  "id": 1779,
                  "name": "",
                  "nodeType": "VariableDeclaration",
                  "scope": 1781,
                  "src": "593:4:10",
                  "stateVariable": false,
                  "storageLocation": "default",
                  "typeDescriptions": {
                    "typeIdentifier": "t_bool",
                    "typeString": "bool"
                  },
                  "typeName": {
                    "id": 1778,
                    "name": "bool",
                    "nodeType": "ElementaryTypeName",
                    "src": "593:4:10",
                    "typeDescriptions": {
                      "typeIdentifier": "t_bool",
                      "typeString": "bool"
                    }
                  },
                  "value": null,
                  "visibility": "internal"
                }
              ],
              "src": "592:6:10"
            },
            "scope": 1798,
            "src": "508:91:10",
            "stateMutability": "nonpayable",
            "superFunction": null,
            "visibility": "external"
          },
          {
            "anonymous": false,
            "documentation": null,
            "id": 1789,
            "name": "Transfer",
            "nodeType": "EventDefinition",
            "parameters": {
              "id": 1788,
              "nodeType": "ParameterList",
              "parameters": [
                {
                  "constant": false,
                  "id": 1783,
                  "indexed": true,
                  "name": "from",
                  "nodeType": "VariableDeclaration",
                  "scope": 1789,
                  "src": "623:20:10",
                  "stateVariable": false,
                  "storageLocation": "default",
                  "typeDescriptions": {
                    "typeIdentifier": "t_address",
                    "typeString": "address"
                  },
                  "typeName": {
                    "id": 1782,
                    "name": "address",
                    "nodeType": "ElementaryTypeName",
                    "src": "623:7:10",
                    "typeDescriptions": {
                      "typeIdentifier": "t_address",
                      "typeString": "address"
                    }
                  },
                  "value": null,
                  "visibility": "internal"
                },
                {
                  "constant": false,
                  "id": 1785,
                  "indexed": true,
                  "name": "to",
                  "nodeType": "VariableDeclaration",
                  "scope": 1789,
                  "src": "649:18:10",
                  "stateVariable": false,
                  "storageLocation": "default",
                  "typeDescriptions": {
                    "typeIdentifier": "t_address",
                    "typeString": "address"
                  },
                  "typeName": {
                    "id": 1784,
                    "name": "address",
                    "nodeType": "ElementaryTypeName",
                    "src": "649:7:10",
                    "typeDescriptions": {
                      "typeIdentifier": "t_address",
                      "typeString": "address"
                    }
                  },
                  "value": null,
                  "visibility": "internal"
                },
                {
                  "constant": false,
                  "id": 1787,
                  "indexed": false,
                  "name": "value",
                  "nodeType": "VariableDeclaration",
                  "scope": 1789,
                  "src": "673:13:10",
                  "stateVariable": false,
                  "storageLocation": "default",
                  "typeDescriptions": {
                    "typeIdentifier": "t_uint256",
                    "typeString": "uint256"
                  },
                  "typeName": {
                    "id": 1786,
                    "name": "uint256",
                    "nodeType": "ElementaryTypeName",
                    "src": "673:7:10",
                    "typeDescriptions": {
                      "typeIdentifier": "t_uint256",
                      "typeString": "uint256"
                    }
                  },
                  "value": null,
                  "visibility": "internal"
                }
              ],
              "src": "617:73:10"
            },
            "src": "603:88:10"
          },
          {
            "anonymous": false,
            "documentation": null,
            "id": 1797,
            "name": "Approval",
            "nodeType": "EventDefinition",
            "parameters": {
              "id": 1796,
              "nodeType": "ParameterList",
              "parameters": [
                {
                  "constant": false,
                  "id": 1791,
                  "indexed": true,
                  "name": "owner",
                  "nodeType": "VariableDeclaration",
                  "scope": 1797,
                  "src": "715:21:10",
                  "stateVariable": false,
                  "storageLocation": "default",
                  "typeDescriptions": {
                    "typeIdentifier": "t_address",
                    "typeString": "address"
                  },
                  "typeName": {
                    "id": 1790,
                    "name": "address",
                    "nodeType": "ElementaryTypeName",
                    "src": "715:7:10",
                    "typeDescriptions": {
                      "typeIdentifier": "t_address",
                      "typeString": "address"
                    }
                  },
                  "value": null,
                  "visibility": "internal"
                },
                {
                  "constant": false,
                  "id": 1793,
                  "indexed": true,
                  "name": "spender",
                  "nodeType": "VariableDeclaration",
                  "scope": 1797,
                  "src": "742:23:10",
                  "stateVariable": false,
                  "storageLocation": "default",
                  "typeDescriptions": {
                    "typeIdentifier": "t_address",
                    "typeString": "address"
                  },
                  "typeName": {
                    "id": 1792,
                    "name": "address",
                    "nodeType": "ElementaryTypeName",
                    "src": "742:7:10",
                    "typeDescriptions": {
                      "typeIdentifier": "t_address",
                      "typeString": "address"
                    }
                  },
                  "value": null,
                  "visibility": "internal"
                },
                {
                  "constant": false,
                  "id": 1795,
                  "indexed": false,
                  "name": "value",
                  "nodeType": "VariableDeclaration",
                  "scope": 1797,
                  "src": "771:13:10",
                  "stateVariable": false,
                  "storageLocation": "default",
                  "typeDescriptions": {
                    "typeIdentifier": "t_uint256",
                    "typeString": "uint256"
                  },
                  "typeName": {
                    "id": 1794,
                    "name": "uint256",
                    "nodeType": "ElementaryTypeName",
                    "src": "771:7:10",
                    "typeDescriptions": {
                      "typeIdentifier": "t_uint256",
                      "typeString": "uint256"
                    }
                  },
                  "value": null,
                  "visibility": "internal"
                }
              ],
              "src": "709:79:10"
            },
            "src": "695:94:10"
          }
        ],
        "scope": 1799,
        "src": "115:676:10"
      }
    ],
    "src": "0:792:10"
  },
  "compiler": {
    "name": "solc",
    "version": "0.4.24+commit.e67f0147.Emscripten.clang"
  },
  "networks": {},
  "schemaVersion": "2.0.0",
  "updatedAt": "2018-11-28T10:24:51.857Z"
}