cic-internal-integration/apps/cic-eth/tests/testdata/bancor/ERC20Token.json

{
  "contractName": "ERC20Token",
  "abi": [
    {
      "inputs": [
        {
          "internalType": "string",
          "name": "_name",
          "type": "string"
        },
        {
          "internalType": "string",
          "name": "_symbol",
          "type": "string"
        },
        {
          "internalType": "uint8",
          "name": "_decimals",
          "type": "uint8"
        },
        {
          "internalType": "uint256",
          "name": "_totalSupply",
          "type": "uint256"
        }
      ],
      "stateMutability": "nonpayable",
      "type": "constructor"
    },
    {
      "anonymous": false,
      "inputs": [
        {
          "indexed": true,
          "internalType": "address",
          "name": "_owner",
          "type": "address"
        },
        {
          "indexed": true,
          "internalType": "address",
          "name": "_spender",
          "type": "address"
        },
        {
          "indexed": false,
          "internalType": "uint256",
          "name": "_value",
          "type": "uint256"
        }
      ],
      "name": "Approval",
      "type": "event"
    },
    {
      "anonymous": false,
      "inputs": [
        {
          "indexed": true,
          "internalType": "address",
          "name": "_from",
          "type": "address"
        },
        {
          "indexed": true,
          "internalType": "address",
          "name": "_to",
          "type": "address"
        },
        {
          "indexed": false,
          "internalType": "uint256",
          "name": "_value",
          "type": "uint256"
        }
      ],
      "name": "Transfer",
      "type": "event"
    },
    {
      "inputs": [
        {
          "internalType": "address",
          "name": "",
          "type": "address"
        },
        {
          "internalType": "address",
          "name": "",
          "type": "address"
        }
      ],
      "name": "allowance",
      "outputs": [
        {
          "internalType": "uint256",
          "name": "",
          "type": "uint256"
        }
      ],
      "stateMutability": "view",
      "type": "function",
      "constant": true
    },
    {
      "inputs": [
        {
          "internalType": "address",
          "name": "",
          "type": "address"
        }
      ],
      "name": "balanceOf",
      "outputs": [
        {
          "internalType": "uint256",
          "name": "",
          "type": "uint256"
        }
      ],
      "stateMutability": "view",
      "type": "function",
      "constant": true
    },
    {
      "inputs": [],
      "name": "decimals",
      "outputs": [
        {
          "internalType": "uint8",
          "name": "",
          "type": "uint8"
        }
      ],
      "stateMutability": "view",
      "type": "function",
      "constant": true
    },
    {
      "inputs": [],
      "name": "name",
      "outputs": [
        {
          "internalType": "string",
          "name": "",
          "type": "string"
        }
      ],
      "stateMutability": "view",
      "type": "function",
      "constant": true
    },
    {
      "inputs": [],
      "name": "symbol",
      "outputs": [
        {
          "internalType": "string",
          "name": "",
          "type": "string"
        }
      ],
      "stateMutability": "view",
      "type": "function",
      "constant": true
    },
    {
      "inputs": [],
      "name": "totalSupply",
      "outputs": [
        {
          "internalType": "uint256",
          "name": "",
          "type": "uint256"
        }
      ],
      "stateMutability": "view",
      "type": "function",
      "constant": true
    },
    {
      "inputs": [
        {
          "internalType": "address",
          "name": "_to",
          "type": "address"
        },
        {
          "internalType": "uint256",
          "name": "_value",
          "type": "uint256"
        }
      ],
      "name": "transfer",
      "outputs": [
        {
          "internalType": "bool",
          "name": "",
          "type": "bool"
        }
      ],
      "stateMutability": "nonpayable",
      "type": "function"
    },
    {
      "inputs": [
        {
          "internalType": "address",
          "name": "_from",
          "type": "address"
        },
        {
          "internalType": "address",
          "name": "_to",
          "type": "address"
        },
        {
          "internalType": "uint256",
          "name": "_value",
          "type": "uint256"
        }
      ],
      "name": "transferFrom",
      "outputs": [
        {
          "internalType": "bool",
          "name": "",
          "type": "bool"
        }
      ],
      "stateMutability": "nonpayable",
      "type": "function"
    },
    {
      "inputs": [
        {
          "internalType": "address",
          "name": "_spender",
          "type": "address"
        },
        {
          "internalType": "uint256",
          "name": "_value",
          "type": "uint256"
        }
      ],
      "name": "approve",
      "outputs": [
        {
          "internalType": "bool",
          "name": "",
          "type": "bool"
        }
      ],
      "stateMutability": "nonpayable",
      "type": "function"
    }
  ],
  "metadata": "{\"compiler\":{\"version\":\"0.6.12+commit.27d51765\"},\"language\":\"Solidity\",\"output\":{\"abi\":[{\"inputs\":[{\"internalType\":\"string\",\"name\":\"_name\",\"type\":\"string\"},{\"internalType\":\"string\",\"name\":\"_symbol\",\"type\":\"string\"},{\"internalType\":\"uint8\",\"name\":\"_decimals\",\"type\":\"uint8\"},{\"internalType\":\"uint256\",\"name\":\"_totalSupply\",\"type\":\"uint256\"}],\"stateMutability\":\"nonpayable\",\"type\":\"constructor\"},{\"anonymous\":false,\"inputs\":[{\"indexed\":true,\"internalType\":\"address\",\"name\":\"_owner\",\"type\":\"address\"},{\"indexed\":true,\"internalType\":\"address\",\"name\":\"_spender\",\"type\":\"address\"},{\"indexed\":false,\"internalType\":\"uint256\",\"name\":\"_value\",\"type\":\"uint256\"}],\"name\":\"Approval\",\"type\":\"event\"},{\"anonymous\":false,\"inputs\":[{\"indexed\":true,\"internalType\":\"address\",\"name\":\"_from\",\"type\":\"address\"},{\"indexed\":true,\"internalType\":\"address\",\"name\":\"_to\",\"type\":\"address\"},{\"indexed\":false,\"internalType\":\"uint256\",\"name\":\"_value\",\"type\":\"uint256\"}],\"name\":\"Transfer\",\"type\":\"event\"},{\"inputs\":[{\"internalType\":\"address\",\"name\":\"\",\"type\":\"address\"},{\"internalType\":\"address\",\"name\":\"\",\"type\":\"address\"}],\"name\":\"allowance\",\"outputs\":[{\"internalType\":\"uint256\",\"name\":\"\",\"type\":\"uint256\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"address\",\"name\":\"_spender\",\"type\":\"address\"},{\"internalType\":\"uint256\",\"name\":\"_value\",\"type\":\"uint256\"}],\"name\":\"approve\",\"outputs\":[{\"internalType\":\"bool\",\"name\":\"\",\"type\":\"bool\"}],\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"address\",\"name\":\"\",\"type\":\"address\"}],\"name\":\"balanceOf\",\"outputs\":[{\"internalType\":\"uint256\",\"name\":\"\",\"type\":\"uint256\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[],\"name\":\"decimals\",\"outputs\":[{\"internalType\":\"uint8\",\"name\":\"\",\"type\":\"uint8\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[],\"name\":\"name\",\"outputs\":[{\"internalType\":\"string\",\"name\":\"\",\"type\":\"string\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[],\"name\":\"symbol\",\"outputs\":[{\"internalType\":\"string\",\"name\":\"\",\"type\":\"string\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[],\"name\":\"totalSupply\",\"outputs\":[{\"internalType\":\"uint256\",\"name\":\"\",\"type\":\"uint256\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"address\",\"name\":\"_to\",\"type\":\"address\"},{\"internalType\":\"uint256\",\"name\":\"_value\",\"type\":\"uint256\"}],\"name\":\"transfer\",\"outputs\":[{\"internalType\":\"bool\",\"name\":\"\",\"type\":\"bool\"}],\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"address\",\"name\":\"_from\",\"type\":\"address\"},{\"internalType\":\"address\",\"name\":\"_to\",\"type\":\"address\"},{\"internalType\":\"uint256\",\"name\":\"_value\",\"type\":\"uint256\"}],\"name\":\"transferFrom\",\"outputs\":[{\"internalType\":\"bool\",\"name\":\"\",\"type\":\"bool\"}],\"stateMutability\":\"nonpayable\",\"type\":\"function\"}],\"devdoc\":{\"details\":\"ERC20 Standard Token implementation\",\"events\":{\"Approval(address,address,uint256)\":{\"details\":\"triggered when a wallet allows another wallet to transfer tokens from on its behalf\",\"params\":{\"_owner\":\"wallet that approves the allowance\",\"_spender\":\"wallet that receives the allowance\",\"_value\":\"allowance amount\"}},\"Transfer(address,address,uint256)\":{\"details\":\"triggered when tokens are transferred between wallets\",\"params\":{\"_from\":\"source address\",\"_to\":\"target address\",\"_value\":\"transfer amount\"}}},\"kind\":\"dev\",\"methods\":{\"approve(address,uint256)\":{\"details\":\"allows another account/contract to transfers tokens on behalf of the cal
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  "source": "// SPDX-License-Identifier: SEE LICENSE IN LICENSE\r\npragma solidity 0.6.12;\r\nimport \"./interfaces/IERC20Token.sol\";\r\nimport \"../utility/Utils.sol\";\r\nimport \"../utility/SafeMath.sol\";\r\n\r\n/**\r\n  * @dev ERC20 Standard Token implementation\r\n*/\r\ncontract ERC20Token is IERC20Token, Utils {\r\n    using SafeMath for uint256;\r\n\r\n\r\n    string public override name;\r\n    string public override symbol;\r\n    uint8 public override decimals;\r\n    uint256 public override totalSupply;\r\n    mapping (address => uint256) public override balanceOf;\r\n    mapping (address => mapping (address => uint256)) public override allowance;\r\n\r\n    /**\r\n      * @dev triggered when tokens are transferred between wallets\r\n      *\r\n      * @param _from    source address\r\n      * @param _to      target address\r\n      * @param _value   transfer amount\r\n    */\r\n    event Transfer(address indexed _from, address indexed _to, uint256 _value);\r\n\r\n    /**\r\n      * @dev triggered when a wallet allows another wallet to transfer tokens from on its behalf\r\n      *\r\n      * @param _owner   wallet that approves the allowance\r\n      * @param _spender wallet that receives the allowance\r\n      * @param _value   allowance amount\r\n    */\r\n    event Approval(address indexed _owner, address indexed _spender, uint256 _value);\r\n\r\n    /**\r\n      * @dev initializes a new ERC20Token instance\r\n      *\r\n      * @param _name        token name\r\n      * @param _symbol      token symbol\r\n      * @param _decimals    decimal points, for display purposes\r\n      * @param _totalSupply total supply of token units\r\n    */\r\n    constructor(string memory _name, string memory _symbol, uint8 _decimals, uint256 _totalSupply) public {\r\n        // validate input\r\n        require(bytes(_name).length > 0, \"ERR_INVALID_NAME\");\r\n        require(bytes(_symbol).length > 0, \"ERR_INVALID_SYMBOL\");\r\n\r\n        name = _name;\r\n        symbol = _symbol;\r\n        decimals = _decimals;\r\n        totalSupply = _totalSupply;\r\n        balanceOf[msg.sender] = _totalSupply;\r\n    }\r\n\r\n    /**\r\n      * @dev transfers tokens to a given address\r\n      * throws on any error rather then return a false flag to minimize user errors\r\n      *\r\n      * @param _to      target address\r\n      * @param _value   transfer amount\r\n      *\r\n      * @return true if the transfer was successful, false if it wasn't\r\n    */\r\n    function transfer(address _to, uint256 _value)\r\n        public\r\n        virtual\r\n        override\r\n        validAddress(_to)\r\n        returns (bool)\r\n    {\r\n        balanceOf[msg.sender] = balanceOf[msg.sender].sub(_value);\r\n        balanceOf[_to] = balanceOf[_to].add(_value);\r\n        emit Transfer(msg.sender, _to, _value);\r\n        return true;\r\n    }\r\n\r\n    /**\r\n      * @dev transfers tokens to a given address on behalf of another address\r\n      * throws on any error rather then return a false flag to minimize user errors\r\n      *\r\n      * @param _from    source address\r\n      * @param _to      target address\r\n      * @param _value   transfer amount\r\n      *\r\n      * @return true if the transfer was successful, false if it wasn't\r\n    */\r\n    function transferFrom(address _from, address _to, uint256 _value)\r\n        public\r\n        virtual\r\n        override\r\n        validAddress(_from)\r\n        validAddress(_to)\r\n        returns (bool)\r\n    {\r\n        allowance[_from][msg.sender] = allowance[_from][msg.sender].sub(_value);\r\n        balanceOf[_from] = balanceOf[_from].sub(_value);\r\n        balanceOf[_to] = balanceOf[_to].add(_value);\r\n        emit Transfer(_from, _to, _value);\r\n        return true;\r\n    }\r\n\r\n    /**\r\n      * @dev allows another account/contract to transfers tokens on behalf of the caller\r\n      * throws on any error rather then return a false flag to minimize user errors\r\n      *\r\n      * also, to minimize the risk of the approve/transferFrom attack vector\r\n      * 
  "sourcePath": "/home/lash/src/ext/cic/grassrootseconomics/bancor-contracts/solidity/contracts/token/ERC20Token.sol",
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              "text": " @dev allows another account/contract to transfers tokens on behalf of the caller\n throws on any error rather then return a false flag to minimize user errors\n also, to minimize the risk of the approve/transferFrom attack vector\n (see https://docs.google.com/document/d/1YLPtQxZu1UAvO9cZ1O2RPXBbT0mooh4DYKjA_jp-RLM/), approve has to be called twice\n in 2 separate transactions - once to change the allowance to 0 and secondly to change it to the new allowance value\n @param _spender approved address\n @param _value   allowance amount\n @return true if the approval was successful, false if it wasn't"
            },
            "functionSelector": "095ea7b3",
            "id": 20616,
            "implemented": true,
            "kind": "function",
            "modifiers": [
              {
                "arguments": [
                  {
                    "argumentTypes": null,
                    "id": 20576,
                    "name": "_spender",
                    "nodeType": "Identifier",
                    "overloadedDeclarations": [],
                    "referencedDeclaration": 20570,
                    "src": "4408:8:48",
                    "typeDescriptions": {
                      "typeIdentifier": "t_address",
                      "typeString": "address"
                    }
                  }
                ],
                "id": 20577,
                "modifierName": {
                  "argumentTypes": null,
                  "id": 20575,
                  "name": "validAddress",
                  "nodeType": "Identifier",
                  "overloadedDeclarations": [],
                  "referencedDeclaration": 22953,
                  "src": "4395:12:48",
                  "typeDescriptions": {
                    "typeIdentifier": "t_modifier$_t_address_$",
                    "typeString": "modifier (address)"
                  }
                },
                "nodeType": "ModifierInvocation",
                "src": "4395:22:48"
              }
            ],
            "name": "approve",
            "nodeType": "FunctionDefinition",
            "overrides": {
              "id": 20574,
              "nodeType": "OverrideSpecifier",
              "overrides": [],
              "src": "4377:8:48"
            },
            "parameters": {
              "id": 20573,
              "nodeType": "ParameterList",
              "parameters": [
                {
                  "constant": false,
                  "id": 20570,
                  "mutability": "mutable",
                  "name": "_spender",
                  "nodeType": "VariableDeclaration",
                  "overrides": null,
                  "scope": 20616,
                  "src": "4301:16:48",
                  "stateVariable": false,
                  "storageLocation": "default",
                  "typeDescriptions": {
                    "typeIdentifier": "t_address",
                    "typeString": "address"
                  },
                  "typeName": {
                    "id": 20569,
                    "name": "address",
                    "nodeType": "ElementaryTypeName",
                    "src": "4301:7:48",
                    "stateMutability": "nonpayable",
                    "typeDescriptions": {
                      "typeIdentifier": "t_address",
                      "typeString": "address"
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                  "value": null,
                  "visibility": "internal"
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                  "mutability": "mutable",
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                  "src": "4319:14:48",
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                    "typeString": "uint256"
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                    "name": "uint256",
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                      "typeString": "uint256"
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              "src": "4300:34:48"
            },
            "returnParameters": {
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              "nodeType": "ParameterList",
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                  "mutability": "mutable",
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                  "typeName": {
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            "scope": 20617,
            "src": "4284:519:48",
            "stateMutability": "nonpayable",
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        ],
        "scope": 20618,
        "src": "241:4565:48"
      }
    ],
    "src": "52:4756:48"
  },
  "compiler": {
    "name": "solc",
    "version": "0.6.12+commit.27d51765.Emscripten.clang"
  },
  "networks": {},
  "schemaVersion": "3.2.3",
  "updatedAt": "2020-11-10T14:20:44.727Z",
  "networkType": "ethereum",
  "devdoc": {
    "details": "ERC20 Standard Token implementation",
    "events": {
      "Approval(address,address,uint256)": {
        "details": "triggered when a wallet allows another wallet to transfer tokens from on its behalf",
        "params": {
          "_owner": "wallet that approves the allowance",
          "_spender": "wallet that receives the allowance",
          "_value": "allowance amount"
        }
      },
      "Transfer(address,address,uint256)": {
        "details": "triggered when tokens are transferred between wallets",
        "params": {
          "_from": "source address",
          "_to": "target address",
          "_value": "transfer amount"
        }
      }
    },
    "kind": "dev",
    "methods": {
      "approve(address,uint256)": {
        "details": "allows another account/contract to transfers tokens on behalf of the caller throws on any error rather then return a false flag to minimize user errors also, to minimize the risk of the approve/transferFrom attack vector (see https://docs.google.com/document/d/1YLPtQxZu1UAvO9cZ1O2RPXBbT0mooh4DYKjA_jp-RLM/), approve has to be called twice in 2 separate transactions - once to change the allowance to 0 and secondly to change it to the new allowance value",
        "params": {
          "_spender": "approved address",
          "_value": "allowance amount"
        },
        "returns": {
          "_0": "true if the approval was successful, false if it wasn't"
        }
      },
      "constructor": {
        "details": "initializes a new ERC20Token instance",
        "params": {
          "_decimals": "decimal points, for display purposes",
          "_name": "token name",
          "_symbol": "token symbol",
          "_totalSupply": "total supply of token units"
        }
      },
      "transfer(address,uint256)": {
        "details": "transfers tokens to a given address throws on any error rather then return a false flag to minimize user errors",
        "params": {
          "_to": "target address",
          "_value": "transfer amount"
        },
        "returns": {
          "_0": "true if the transfer was successful, false if it wasn't"
        }
      },
      "transferFrom(address,address,uint256)": {
        "details": "transfers tokens to a given address on behalf of another address throws on any error rather then return a false flag to minimize user errors",
        "params": {
          "_from": "source address",
          "_to": "target address",
          "_value": "transfer amount"
        },
        "returns": {
          "_0": "true if the transfer was successful, false if it wasn't"
        }
      }
    },
    "version": 1
  },
  "userdoc": {
    "kind": "user",
    "methods": {},
    "version": 1
  }
}