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December 3, 2019 12:02
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MockStableCoin.json
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| { | |
| "contractName": "MockStableCoin", | |
| "abi": [ | |
| { | |
| "inputs": [ | |
| { | |
| "internalType": "uint256", | |
| "name": "chainId_", | |
| "type": "uint256" | |
| } | |
| ], | |
| "payable": false, | |
| "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" | |
| }, | |
| { | |
| "constant": true, | |
| "inputs": [], | |
| "name": "DOMAIN_SEPARATOR", | |
| "outputs": [ | |
| { | |
| "internalType": "bytes32", | |
| "name": "", | |
| "type": "bytes32" | |
| } | |
| ], | |
| "payable": false, | |
| "stateMutability": "view", | |
| "type": "function" | |
| }, | |
| { | |
| "constant": true, | |
| "inputs": [], | |
| "name": "EIP712Name", | |
| "outputs": [ | |
| { | |
| "internalType": "string", | |
| "name": "", | |
| "type": "string" | |
| } | |
| ], | |
| "payable": false, | |
| "stateMutability": "view", | |
| "type": "function" | |
| }, | |
| { | |
| "constant": true, | |
| "inputs": [], | |
| "name": "PERMIT_TYPEHASH", | |
| "outputs": [ | |
| { | |
| "internalType": "bytes32", | |
| "name": "", | |
| "type": "bytes32" | |
| } | |
| ], | |
| "payable": false, | |
| "stateMutability": "view", | |
| "type": "function" | |
| }, | |
| { | |
| "constant": true, | |
| "inputs": [], | |
| "name": "decimals", | |
| "outputs": [ | |
| { | |
| "internalType": "uint8", | |
| "name": "", | |
| "type": "uint8" | |
| } | |
| ], | |
| "payable": false, | |
| "stateMutability": "view", | |
| "type": "function" | |
| }, | |
| { | |
| "constant": true, | |
| "inputs": [], | |
| "name": "name", | |
| "outputs": [ | |
| { | |
| "internalType": "string", | |
| "name": "", | |
| "type": "string" | |
| } | |
| ], | |
| "payable": false, | |
| "stateMutability": "view", | |
| "type": "function" | |
| }, | |
| { | |
| "constant": true, | |
| "inputs": [ | |
| { | |
| "internalType": "address", | |
| "name": "", | |
| "type": "address" | |
| } | |
| ], | |
| "name": "nonces", | |
| "outputs": [ | |
| { | |
| "internalType": "uint256", | |
| "name": "", | |
| "type": "uint256" | |
| } | |
| ], | |
| "payable": false, | |
| "stateMutability": "view", | |
| "type": "function" | |
| }, | |
| { | |
| "constant": true, | |
| "inputs": [], | |
| "name": "symbol", | |
| "outputs": [ | |
| { | |
| "internalType": "string", | |
| "name": "", | |
| "type": "string" | |
| } | |
| ], | |
| "payable": false, | |
| "stateMutability": "view", | |
| "type": "function" | |
| }, | |
| { | |
| "constant": true, | |
| "inputs": [], | |
| "name": "version", | |
| "outputs": [ | |
| { | |
| "internalType": "string", | |
| "name": "", | |
| "type": "string" | |
| } | |
| ], | |
| "payable": false, | |
| "stateMutability": "view", | |
| "type": "function" | |
| }, | |
| { | |
| "constant": true, | |
| "inputs": [], | |
| "name": "totalSupply", | |
| "outputs": [ | |
| { | |
| "internalType": "uint256", | |
| "name": "", | |
| "type": "uint256" | |
| } | |
| ], | |
| "payable": false, | |
| "stateMutability": "view", | |
| "type": "function" | |
| }, | |
| { | |
| "constant": true, | |
| "inputs": [ | |
| { | |
| "internalType": "address", | |
| "name": "account", | |
| "type": "address" | |
| } | |
| ], | |
| "name": "balanceOf", | |
| "outputs": [ | |
| { | |
| "internalType": "uint256", | |
| "name": "", | |
| "type": "uint256" | |
| } | |
| ], | |
| "payable": false, | |
| "stateMutability": "view", | |
| "type": "function" | |
| }, | |
| { | |
| "constant": false, | |
| "inputs": [ | |
| { | |
| "internalType": "address", | |
| "name": "recipient", | |
| "type": "address" | |
| }, | |
| { | |
| "internalType": "uint256", | |
| "name": "amount", | |
| "type": "uint256" | |
| } | |
| ], | |
| "name": "transfer", | |
| "outputs": [ | |
| { | |
| "internalType": "bool", | |
| "name": "", | |
| "type": "bool" | |
| } | |
| ], | |
| "payable": false, | |
| "stateMutability": "nonpayable", | |
| "type": "function" | |
| }, | |
| { | |
| "constant": true, | |
| "inputs": [ | |
| { | |
| "internalType": "address", | |
| "name": "owner", | |
| "type": "address" | |
| }, | |
| { | |
| "internalType": "address", | |
| "name": "spender", | |
| "type": "address" | |
| } | |
| ], | |
| "name": "allowance", | |
| "outputs": [ | |
| { | |
| "internalType": "uint256", | |
| "name": "", | |
| "type": "uint256" | |
| } | |
| ], | |
| "payable": false, | |
| "stateMutability": "view", | |
| "type": "function" | |
| }, | |
| { | |
| "constant": false, | |
| "inputs": [ | |
| { | |
| "internalType": "address", | |
| "name": "spender", | |
| "type": "address" | |
| }, | |
| { | |
| "internalType": "uint256", | |
| "name": "amount", | |
| "type": "uint256" | |
| } | |
| ], | |
| "name": "approve", | |
| "outputs": [ | |
| { | |
| "internalType": "bool", | |
| "name": "", | |
| "type": "bool" | |
| } | |
| ], | |
| "payable": false, | |
| "stateMutability": "nonpayable", | |
| "type": "function" | |
| }, | |
| { | |
| "constant": false, | |
| "inputs": [ | |
| { | |
| "internalType": "address", | |
| "name": "sender", | |
| "type": "address" | |
| }, | |
| { | |
| "internalType": "address", | |
| "name": "recipient", | |
| "type": "address" | |
| }, | |
| { | |
| "internalType": "uint256", | |
| "name": "amount", | |
| "type": "uint256" | |
| } | |
| ], | |
| "name": "transferFrom", | |
| "outputs": [ | |
| { | |
| "internalType": "bool", | |
| "name": "", | |
| "type": "bool" | |
| } | |
| ], | |
| "payable": false, | |
| "stateMutability": "nonpayable", | |
| "type": "function" | |
| }, | |
| { | |
| "constant": false, | |
| "inputs": [ | |
| { | |
| "internalType": "address", | |
| "name": "spender", | |
| "type": "address" | |
| }, | |
| { | |
| "internalType": "uint256", | |
| "name": "addedValue", | |
| "type": "uint256" | |
| } | |
| ], | |
| "name": "increaseAllowance", | |
| "outputs": [ | |
| { | |
| "internalType": "bool", | |
| "name": "", | |
| "type": "bool" | |
| } | |
| ], | |
| "payable": false, | |
| "stateMutability": "nonpayable", | |
| "type": "function" | |
| }, | |
| { | |
| "constant": false, | |
| "inputs": [ | |
| { | |
| "internalType": "address", | |
| "name": "spender", | |
| "type": "address" | |
| }, | |
| { | |
| "internalType": "uint256", | |
| "name": "subtractedValue", | |
| "type": "uint256" | |
| } | |
| ], | |
| "name": "decreaseAllowance", | |
| "outputs": [ | |
| { | |
| "internalType": "bool", | |
| "name": "", | |
| "type": "bool" | |
| } | |
| ], | |
| "payable": false, | |
| "stateMutability": "nonpayable", | |
| "type": "function" | |
| }, | |
| { | |
| "constant": false, | |
| "inputs": [ | |
| { | |
| "internalType": "address", | |
| "name": "holder", | |
| "type": "address" | |
| }, | |
| { | |
| "internalType": "address", | |
| "name": "spender", | |
| "type": "address" | |
| }, | |
| { | |
| "internalType": "uint256", | |
| "name": "nonce", | |
| "type": "uint256" | |
| }, | |
| { | |
| "internalType": "uint256", | |
| "name": "expiry", | |
| "type": "uint256" | |
| }, | |
| { | |
| "internalType": "bool", | |
| "name": "allowed", | |
| "type": "bool" | |
| }, | |
| { | |
| "internalType": "uint8", | |
| "name": "v", | |
| "type": "uint8" | |
| }, | |
| { | |
| "internalType": "bytes32", | |
| "name": "r", | |
| "type": "bytes32" | |
| }, | |
| { | |
| "internalType": "bytes32", | |
| "name": "s", | |
| "type": "bytes32" | |
| } | |
| ], | |
| "name": "permit", | |
| "outputs": [], | |
| "payable": false, | |
| "stateMutability": "nonpayable", | |
| "type": "function" | |
| } | |
| ], | |
| "metadata": "{\"compiler\":{\"version\":\"0.5.13+commit.5b0b510c\"},\"language\":\"Solidity\",\"output\":{\"abi\":[{\"inputs\":[{\"internalType\":\"uint256\",\"name\":\"chainId_\",\"type\":\"uint256\"}],\"payable\":false,\"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\"},{\"constant\":true,\"inputs\":[],\"name\":\"DOMAIN_SEPARATOR\",\"outputs\":[{\"internalType\":\"bytes32\",\"name\":\"\",\"type\":\"bytes32\"}],\"payable\":false,\"stateMutability\":\"view\",\"type\":\"function\"},{\"constant\":true,\"inputs\":[],\"name\":\"EIP712Name\",\"outputs\":[{\"internalType\":\"string\",\"name\":\"\",\"type\":\"string\"}],\"payable\":false,\"stateMutability\":\"view\",\"type\":\"function\"},{\"constant\":true,\"inputs\":[],\"name\":\"PERMIT_TYPEHASH\",\"outputs\":[{\"internalType\":\"bytes32\",\"name\":\"\",\"type\":\"bytes32\"}],\"payable\":false,\"stateMutability\":\"view\",\"type\":\"function\"},{\"constant\":true,\"inputs\":[{\"internalType\":\"address\",\"name\":\"owner\",\"type\":\"address\"},{\"internalType\":\"address\",\"name\":\"spender\",\"type\":\"address\"}],\"name\":\"allowance\",\"outputs\":[{\"internalType\":\"uint256\",\"name\":\"\",\"type\":\"uint256\"}],\"payable\":false,\"stateMutability\":\"view\",\"type\":\"function\"},{\"constant\":false,\"inputs\":[{\"internalType\":\"address\",\"name\":\"spender\",\"type\":\"address\"},{\"internalType\":\"uint256\",\"name\":\"amount\",\"type\":\"uint256\"}],\"name\":\"approve\",\"outputs\":[{\"internalType\":\"bool\",\"name\":\"\",\"type\":\"bool\"}],\"payable\":false,\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"constant\":true,\"inputs\":[{\"internalType\":\"address\",\"name\":\"account\",\"type\":\"address\"}],\"name\":\"balanceOf\",\"outputs\":[{\"internalType\":\"uint256\",\"name\":\"\",\"type\":\"uint256\"}],\"payable\":false,\"stateMutability\":\"view\",\"type\":\"function\"},{\"constant\":true,\"inputs\":[],\"name\":\"decimals\",\"outputs\":[{\"internalType\":\"uint8\",\"name\":\"\",\"type\":\"uint8\"}],\"payable\":false,\"stateMutability\":\"view\",\"type\":\"function\"},{\"constant\":false,\"inputs\":[{\"internalType\":\"address\",\"name\":\"spender\",\"type\":\"address\"},{\"internalType\":\"uint256\",\"name\":\"subtractedValue\",\"type\":\"uint256\"}],\"name\":\"decreaseAllowance\",\"outputs\":[{\"internalType\":\"bool\",\"name\":\"\",\"type\":\"bool\"}],\"payable\":false,\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"constant\":false,\"inputs\":[{\"internalType\":\"address\",\"name\":\"spender\",\"type\":\"address\"},{\"internalType\":\"uint256\",\"name\":\"addedValue\",\"type\":\"uint256\"}],\"name\":\"increaseAllowance\",\"outputs\":[{\"internalType\":\"bool\",\"name\":\"\",\"type\":\"bool\"}],\"payable\":false,\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"constant\":true,\"inputs\":[],\"name\":\"name\",\"outputs\":[{\"internalType\":\"string\",\"name\":\"\",\"type\":\"string\"}],\"payable\":false,\"stateMutability\":\"view\",\"type\":\"function\"},{\"constant\":true,\"inputs\":[{\"internalType\":\"address\",\"name\":\"\",\"type\":\"address\"}],\"name\":\"nonces\",\"outputs\":[{\"internalType\":\"uint256\",\"name\":\"\",\"type\":\"uint256\"}],\"payable\":false,\"stateMutability\":\"view\",\"type\":\"function\"},{\"constant\":false,\"inputs\":[{\"internalType\":\"address\",\"name\":\"holder\",\"type\":\"address\"},{\"internalType\":\"address\",\"name\":\"spender\",\"type\":\"address\"},{\"internalType\":\"uint256\",\"name\":\"nonce\",\"type\":\"uint256\"},{\"internalType\":\"uint256\",\"name\":\"expiry\",\"type\":\"uint256\"},{\"internalType\":\"bool\",\"name\":\"allowed\",\"type\":\"bool\"},{\"internalType\":\"uint8\",\"name\":\"v\",\"type\":\"uint8\"},{\"internalType\":\"bytes32\",\"name\":\"r\",\"type\":\"bytes32\"},{\"internalType\":\"bytes32\",\"name\":\"s\",\"type\":\"bytes32\"}],\"name\":\"permit\",\"outputs\":[],\"payable\":false,\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"constant\":true,\"inputs\":[],\"name\":\"symbol\",\"outputs\":[{\"internalType\":\"string\",\"name\":\"\",\"type\":\"string\"}],\"payable\":false,\"stateMutability\":\"view\",\"type\":\"function\"},{\"constant\":true,\"inputs\":[],\"name\":\"totalSupply\",\"outputs\":[{\"internalType\":\"uint256\",\"name\":\"\",\"type\":\"uint256\"}],\"payable\":false,\"stateMutability\":\"view\",\"type\":\"function\"},{\"constant\":false,\"inputs\":[{\"internalType\":\"address\",\"name\":\"recipient\",\"type\":\"address\"},{\"internalType\":\"uint256\",\"name\":\"amount\",\"type\":\"uint256\"}],\"name\":\"transfer\",\"outputs\":[{\"internalType\":\"bool\",\"name\":\"\",\"type\":\"bool\"}],\"payable\":false,\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"constant\":false,\"inputs\":[{\"internalType\":\"address\",\"name\":\"sender\",\"type\":\"address\"},{\"internalType\":\"address\",\"name\":\"recipient\",\"type\":\"address\"},{\"internalType\":\"uint256\",\"name\":\"amount\",\"type\":\"uint256\"}],\"name\":\"transferFrom\",\"outputs\":[{\"internalType\":\"bool\",\"name\":\"\",\"type\":\"bool\"}],\"payable\":false,\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"constant\":true,\"inputs\":[],\"name\":\"version\",\"outputs\":[{\"internalType\":\"string\",\"name\":\"\",\"type\":\"string\"}],\"payable\":false,\"stateMutability\":\"view\",\"type\":\"function\"}],\"devdoc\":{\"methods\":{\"allowance(address,address)\":{\"details\":\"See {IERC20-allowance}.\"},\"approve(address,uint256)\":{\"details\":\"See {IERC20-approve}. * Requirements: * - `spender` cannot be the zero address.\"},\"balanceOf(address)\":{\"details\":\"See {IERC20-balanceOf}.\"},\"decimals()\":{\"details\":\"Returns the number of decimals used to get its user representation. For example, if `decimals` equals `2`, a balance of `505` tokens should be displayed to a user as `5,05` (`505 / 10 ** 2`). * Tokens usually opt for a value of 18, imitating the relationship between Ether and Wei. * NOTE: This information is only used for _display_ purposes: it in no way affects any of the arithmetic of the contract, including {IERC20-balanceOf} and {IERC20-transfer}.\"},\"decreaseAllowance(address,uint256)\":{\"details\":\"Atomically decreases the allowance granted to `spender` by the caller. * This is an alternative to {approve} that can be used as a mitigation for problems described in {IERC20-approve}. * Emits an {Approval} event indicating the updated allowance. * Requirements: * - `spender` cannot be the zero address. - `spender` must have allowance for the caller of at least `subtractedValue`.\"},\"increaseAllowance(address,uint256)\":{\"details\":\"Atomically increases the allowance granted to `spender` by the caller. * This is an alternative to {approve} that can be used as a mitigation for problems described in {IERC20-approve}. * Emits an {Approval} event indicating the updated allowance. * Requirements: * - `spender` cannot be the zero address.\"},\"name()\":{\"details\":\"Returns the name of the token.\"},\"symbol()\":{\"details\":\"Returns the symbol of the token, usually a shorter version of the name.\"},\"totalSupply()\":{\"details\":\"See {IERC20-totalSupply}.\"},\"transfer(address,uint256)\":{\"details\":\"See {IERC20-transfer}. * Requirements: * - `recipient` cannot be the zero address. - the caller must have a balance of at least `amount`.\"},\"transferFrom(address,address,uint256)\":{\"details\":\"See {IERC20-transferFrom}. * Emits an {Approval} event indicating the updated allowance. This is not required by the EIP. See the note at the beginning of {ERC20}; * Requirements: - `sender` and `recipient` cannot be the zero address. - `sender` must have a balance of at least `amount`. - the caller must have allowance for `sender`'s tokens of at least `amount`.\"}}},\"userdoc\":{\"methods\":{}}},\"settings\":{\"compilationTarget\":{\"/Users/raul/Development/gitrepos/EthicHub/platform-contracts/contracts/test/MockStableCoin.sol\":\"MockStableCoin\"},\"evmVersion\":\"petersburg\",\"libraries\":{},\"optimizer\":{\"enabled\":true,\"runs\":200},\"remappings\":[]},\"sources\":{\"/Users/raul/Development/gitrepos/EthicHub/platform-contracts/contracts/test/MockStableCoin.sol\":{\"keccak256\":\"0x49d7ea0b980cb995a6e7f179824c6fb4561696f24158a7ea4ff2a1f4c3b2e9dd\",\"urls\":[\"bzz-raw://2de9dfe7d3568930875032420e5fa640ac8360251fccfd08c6824b93c43fcc83\",\"dweb:/ipfs/QmfNZ5mxNUvZ5ph9ot42bDutECgow1FfgVNKcZJnekdcBS\"]},\"@openzeppelin/contracts/math/SafeMath.sol\":{\"keccak256\":\"0x640b6dee7a4b830bdfd52b5031a07fc2b12209f5b2e29e5d364a7d37f69d8076\",\"urls\":[\"bzz-raw://31113152e1ddb78fe7a4197f247591ca894e93f916867beb708d8e747b6cc74f\",\"dweb:/ipfs/QmbZaJyXdpsYGykVhHH9qpVGQg9DGCxE2QufbCUy3daTgq\"]},\"@openzeppelin/contracts/token/ERC20/ERC20Detailed.sol\":{\"keccak256\":\"0x4a3a810b7ebe742e897e1fd428b3eeed2196d3acea58eaf9c566ed10d545d2ed\",\"urls\":[\"bzz-raw://28d03f328e19e4099d5013de0649afaeaabac1a614e130767ab1cb4aca9775b6\",\"dweb:/ipfs/Qmb9iW7yNuYehB2NfhRMs9TakqbLVQhBhmGMkaDZ5g1Eb4\"]},\"@openzeppelin/contracts/token/ERC20/IERC20.sol\":{\"keccak256\":\"0xe5bb0f57cff3e299f360052ba50f1ea0fff046df2be070b6943e0e3c3fdad8a9\",\"urls\":[\"bzz-raw://59fd025151435da35faa8093a5c7a17de02de9d08ad27275c5cdf05050820d91\",\"dweb:/ipfs/QmQMvwEcPhoRXzbXyrdoeRtvLoifUW9Qh7Luho7bmUPRkc\"]}},\"version\":1}", | |
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| "source": "pragma solidity 0.5.13;\n\nimport \"@openzeppelin/contracts/token/ERC20/ERC20Detailed.sol\";\nimport \"@openzeppelin/contracts/math/SafeMath.sol\";\n\ncontract MockStableCoin is ERC20Detailed {\n using SafeMath for uint256;\n mapping (address => uint256) private _balances;\n mapping (address => mapping (address => uint256)) private _allowances;\n uint256 private _totalSupply;\n\n // --- EIP712 niceties ---\n bytes32 public DOMAIN_SEPARATOR;\n //For compatibility with DAI codebase, OZ name does not compile\n string public constant EIP712Name = 'StableCoin';\n // bytes32 public constant PERMIT_TYPEHASH = keccak256(\"Permit(address holder,address spender,uint256 nonce,uint256 expiry,bool allowed)\");\n bytes32 public constant PERMIT_TYPEHASH = 0xea2aa0a1be11a07ed86d755c93467f4f82362b452371d1ba94d1715123511acb;\n string public constant version = \"1\";\n mapping (address => uint) public nonces;\n\n constructor(uint256 chainId_)\n ERC20Detailed('StableCoin', 'STC', 18) public {\n _mint(address(this), 10**28); // 10.000.000.000 StableCoins\n _mint(msg.sender, 10**26); // 1.000.000.000.000 StableCoins\n DOMAIN_SEPARATOR = keccak256(abi.encode(\n keccak256(\"EIP712Domain(string name,string version,uint256 chainId,address verifyingContract)\"),\n keccak256(bytes(EIP712Name)),\n keccak256(bytes(version)),\n chainId_,\n address(this)\n ));\n }\n /**\n * @dev See {IERC20-totalSupply}.\n */\n function totalSupply() public view returns (uint256) {\n return _totalSupply;\n }\n\n /**\n * @dev See {IERC20-balanceOf}.\n */\n function balanceOf(address account) public view returns (uint256) {\n return _balances[account];\n }\n\n /**\n * @dev See {IERC20-transfer}.\n *\n * Requirements:\n *\n * - `recipient` cannot be the zero address.\n * - the caller must have a balance of at least `amount`.\n */\n function transfer(address recipient, uint256 amount) public returns (bool) {\n _transfer(msg.sender, recipient, amount);\n return true;\n }\n\n /**\n * @dev See {IERC20-allowance}.\n */\n function allowance(address owner, address spender) public view returns (uint256) {\n return _allowances[owner][spender];\n }\n\n /**\n * @dev See {IERC20-approve}.\n *\n * Requirements:\n *\n * - `spender` cannot be the zero address.\n */\n function approve(address spender, uint256 amount) public returns (bool) {\n _approve(msg.sender, spender, amount);\n return true;\n }\n\n /**\n * @dev See {IERC20-transferFrom}.\n *\n * Emits an {Approval} event indicating the updated allowance. This is not\n * required by the EIP. See the note at the beginning of {ERC20};\n *\n * Requirements:\n * - `sender` and `recipient` cannot be the zero address.\n * - `sender` must have a balance of at least `amount`.\n * - the caller must have allowance for `sender`'s tokens of at least\n * `amount`.\n */\n function transferFrom(address sender, address recipient, uint256 amount) public returns (bool) {\n _transfer(sender, recipient, amount);\n _approve(sender, msg.sender, _allowances[sender][msg.sender].sub(amount, \"ERC20: transfer amount exceeds allowance\"));\n return true;\n }\n\n /**\n * @dev Atomically increases the allowance granted to `spender` by the caller.\n *\n * This is an alternative to {approve} that can be used as a mitigation for\n * problems described in {IERC20-approve}.\n *\n * Emits an {Approval} event indicating the updated allowance.\n *\n * Requirements:\n *\n * - `spender` cannot be the zero address.\n */\n function increaseAllowance(address spender, uint256 addedValue) public returns (bool) {\n _approve(msg.sender, spender, _allowances[msg.sender][spender].add(addedValue));\n return true;\n }\n\n /**\n * @dev Atomically decreases the allowance granted to `spender` by the caller.\n *\n * This is an alternative to {approve} that can be used as a mitigation for\n * problems described in {IERC20-approve}.\n *\n * Emits an {Approval} event indicating the updated allowance.\n *\n * Requirements:\n *\n * - `spender` cannot be the zero address.\n * - `spender` must have allowance for the caller of at least\n * `subtractedValue`.\n */\n function decreaseAllowance(address spender, uint256 subtractedValue) public returns (bool) {\n _approve(msg.sender, spender, _allowances[msg.sender][spender].sub(subtractedValue, \"ERC20: decreased allowance below zero\"));\n return true;\n }\n\n /**\n * @dev Moves tokens `amount` from `sender` to `recipient`.\n *\n * This is internal function is equivalent to {transfer}, and can be used to\n * e.g. implement automatic token fees, slashing mechanisms, etc.\n *\n * Emits a {Transfer} event.\n *\n * Requirements:\n *\n * - `sender` cannot be the zero address.\n * - `recipient` cannot be the zero address.\n * - `sender` must have a balance of at least `amount`.\n */\n function _transfer(address sender, address recipient, uint256 amount) internal {\n require(sender != address(0), \"ERC20: transfer from the zero address\");\n require(recipient != address(0), \"ERC20: transfer to the zero address\");\n\n _balances[sender] = _balances[sender].sub(amount, \"ERC20: transfer amount exceeds balance\");\n _balances[recipient] = _balances[recipient].add(amount);\n emit Transfer(sender, recipient, amount);\n }\n\n /** @dev Creates `amount` tokens and assigns them to `account`, increasing\n * the total supply.\n *\n * Emits a {Transfer} event with `from` set to the zero address.\n *\n * Requirements\n *\n * - `to` cannot be the zero address.\n */\n function _mint(address account, uint256 amount) internal {\n require(account != address(0), \"ERC20: mint to the zero address\");\n\n _totalSupply = _totalSupply.add(amount);\n _balances[account] = _balances[account].add(amount);\n emit Transfer(address(0), account, amount);\n }\n\n /**\n * @dev Destroys `amount` tokens from `account`, reducing the\n * total supply.\n *\n * Emits a {Transfer} event with `to` set to the zero address.\n *\n * Requirements\n *\n * - `account` cannot be the zero address.\n * - `account` must have at least `amount` tokens.\n */\n function _burn(address account, uint256 amount) internal {\n require(account != address(0), \"ERC20: burn from the zero address\");\n\n _balances[account] = _balances[account].sub(amount, \"ERC20: burn amount exceeds balance\");\n _totalSupply = _totalSupply.sub(amount);\n emit Transfer(account, address(0), amount);\n }\n\n /**\n * @dev Sets `amount` as the allowance of `spender` over the `owner`s tokens.\n *\n * This is internal function is equivalent to `approve`, and can be used to\n * e.g. set automatic allowances for certain subsystems, etc.\n *\n * Emits an {Approval} event.\n *\n * Requirements:\n *\n * - `owner` cannot be the zero address.\n * - `spender` cannot be the zero address.\n */\n function _approve(address owner, address spender, uint256 amount) internal {\n require(owner != address(0), \"ERC20: approve from the zero address\");\n require(spender != address(0), \"ERC20: approve to the zero address\");\n\n _allowances[owner][spender] = amount;\n emit Approval(owner, spender, amount);\n }\n\n /**\n * @dev Destroys `amount` tokens from `account`.`amount` is then deducted\n * from the caller's allowance.\n *\n * See {_burn} and {_approve}.\n */\n function _burnFrom(address account, uint256 amount) internal {\n _burn(account, amount);\n _approve(account, msg.sender, _allowances[account][msg.sender].sub(amount, \"ERC20: burn amount exceeds allowance\"));\n }\n\n\n function permit(address holder, address spender, uint256 nonce, uint256 expiry,\n bool allowed, uint8 v, bytes32 r, bytes32 s) external\n {\n bytes32 digest = keccak256(abi.encodePacked(\n \"\\x19\\x01\",\n DOMAIN_SEPARATOR,\n keccak256(abi.encode(PERMIT_TYPEHASH,\n holder,\n spender,\n nonce,\n expiry,\n allowed))\n ));\n\n require(holder != address(0), \"Dai/invalid-address-0\");\n require(holder == ecrecover(digest, v, r, s), \"Dai/invalid-permit\");\n require(expiry == 0 || now <= expiry, \"Dai/permit-expired\");\n require(nonce == nonces[holder]++, \"Dai/invalid-nonce\");\n uint wad = allowed ? uint(-1) : 0;\n _allowances[holder][spender] = wad;\n emit Approval(holder, spender, wad);\n }\n}", | |
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| "typeIdentifier": "t_mapping$_t_address_$_t_mapping$_t_address_$_t_uint256_$_$", | |
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| "typeDescriptions": { | |
| "typeIdentifier": "t_mapping$_t_address_$_t_uint256_$", | |
| "typeString": "mapping(address => uint256)" | |
| } | |
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| "indexExpression": { | |
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| "name": "spender", | |
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| "overloadedDeclarations": [], | |
| "referencedDeclaration": 4342, | |
| "src": "8961:7:13", | |
| "typeDescriptions": { | |
| "typeIdentifier": "t_address", | |
| "typeString": "address" | |
| } | |
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| "lValueRequested": true, | |
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| "src": "8941:28:13", | |
| "typeDescriptions": { | |
| "typeIdentifier": "t_uint256", | |
| "typeString": "uint256" | |
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| "id": 4435, | |
| "name": "wad", | |
| "nodeType": "Identifier", | |
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| } | |
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| "typeString": "uint256" | |
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| "typeIdentifier": "t_address", | |
| "typeString": "address" | |
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| { | |
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| { | |
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| "typeDescriptions": { | |
| "typeIdentifier": "t_function_event_nonpayable$_t_address_$_t_address_$_t_uint256_$returns$__$", | |
| "typeString": "function (address,address,uint256)" | |
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| "modifiers": [], | |
| "name": "permit", | |
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| "name": "r", | |
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| }, | |
| "returnParameters": { | |
| "id": 4356, | |
| "nodeType": "ParameterList", | |
| "parameters": [], | |
| "src": "8189:0:13" | |
| }, | |
| "scope": 4446, | |
| "src": "8023:1004:13", | |
| "stateMutability": "nonpayable", | |
| "superFunction": null, | |
| "visibility": "external" | |
| } | |
| ], | |
| "scope": 4447, | |
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| } | |
| ], | |
| "src": "0:9029:13" | |
| }, | |
| "compiler": { | |
| "name": "solc", | |
| "version": "0.5.13+commit.5b0b510c.Emscripten.clang" | |
| }, | |
| "networks": {}, | |
| "schemaVersion": "3.0.19", | |
| "updatedAt": "2019-12-02T16:42:34.810Z", | |
| "devdoc": { | |
| "methods": { | |
| "allowance(address,address)": { | |
| "details": "See {IERC20-allowance}." | |
| }, | |
| "approve(address,uint256)": { | |
| "details": "See {IERC20-approve}. * Requirements: * - `spender` cannot be the zero address." | |
| }, | |
| "balanceOf(address)": { | |
| "details": "See {IERC20-balanceOf}." | |
| }, | |
| "decimals()": { | |
| "details": "Returns the number of decimals used to get its user representation. For example, if `decimals` equals `2`, a balance of `505` tokens should be displayed to a user as `5,05` (`505 / 10 ** 2`). * Tokens usually opt for a value of 18, imitating the relationship between Ether and Wei. * NOTE: This information is only used for _display_ purposes: it in no way affects any of the arithmetic of the contract, including {IERC20-balanceOf} and {IERC20-transfer}." | |
| }, | |
| "decreaseAllowance(address,uint256)": { | |
| "details": "Atomically decreases the allowance granted to `spender` by the caller. * This is an alternative to {approve} that can be used as a mitigation for problems described in {IERC20-approve}. * Emits an {Approval} event indicating the updated allowance. * Requirements: * - `spender` cannot be the zero address. - `spender` must have allowance for the caller of at least `subtractedValue`." | |
| }, | |
| "increaseAllowance(address,uint256)": { | |
| "details": "Atomically increases the allowance granted to `spender` by the caller. * This is an alternative to {approve} that can be used as a mitigation for problems described in {IERC20-approve}. * Emits an {Approval} event indicating the updated allowance. * Requirements: * - `spender` cannot be the zero address." | |
| }, | |
| "name()": { | |
| "details": "Returns the name of the token." | |
| }, | |
| "symbol()": { | |
| "details": "Returns the symbol of the token, usually a shorter version of the name." | |
| }, | |
| "totalSupply()": { | |
| "details": "See {IERC20-totalSupply}." | |
| }, | |
| "transfer(address,uint256)": { | |
| "details": "See {IERC20-transfer}. * Requirements: * - `recipient` cannot be the zero address. - the caller must have a balance of at least `amount`." | |
| }, | |
| "transferFrom(address,address,uint256)": { | |
| "details": "See {IERC20-transferFrom}. * Emits an {Approval} event indicating the updated allowance. This is not required by the EIP. See the note at the beginning of {ERC20}; * Requirements: - `sender` and `recipient` cannot be the zero address. - `sender` must have a balance of at least `amount`. - the caller must have allowance for `sender`'s tokens of at least `amount`." | |
| } | |
| } | |
| }, | |
| "userdoc": { | |
| "methods": {} | |
| } | |
| } |
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