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safe-react/safe-contracts/build/contracts/test/ApproveAndCallFallBack.json

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{
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"source": "pragma solidity ^0.4.24;\n\n// ----------------------------------------------------------------------------\n// 'FIXED' 'Example Fixed Supply Token' token contract\n//\n// Symbol : FIXED\n// Name : Example Fixed Supply Token\n// Total supply: 1,000,000.000000000000000000\n// Decimals : 18\n//\n// Enjoy.\n//\n// (c) BokkyPooBah / Bok Consulting Pty Ltd 2018. The MIT Licence.\n// ----------------------------------------------------------------------------\n\n\n// ----------------------------------------------------------------------------\n// Safe maths\n// ----------------------------------------------------------------------------\nlibrary SafeMath {\n function add(uint a, uint b) internal pure returns (uint c) {\n c = a + b;\n require(c >= a);\n }\n function sub(uint a, uint b) internal pure returns (uint c) {\n require(b <= a);\n c = a - b;\n }\n function mul(uint a, uint b) internal pure returns (uint c) {\n c = a * b;\n require(a == 0 || c / a == b);\n }\n function div(uint a, uint b) internal pure returns (uint c) {\n require(b > 0);\n c = a / b;\n }\n}\n\n\n// ----------------------------------------------------------------------------\n// ERC Token Standard #20 Interface\n// https://github.com/ethereum/EIPs/blob/master/EIPS/eip-20.md\n// ----------------------------------------------------------------------------\ncontract ERC20Interface {\n function totalSupply() public constant returns (uint);\n function balanceOf(address tokenOwner) public constant returns (uint balance);\n function allowance(address tokenOwner, address spender) public constant returns (uint remaining);\n function transfer(address to, uint tokens) public returns (bool success);\n function approve(address spender, uint tokens) public returns (bool success);\n function transferFrom(address from, address to, uint tokens) public returns (bool success);\n\n event Transfer(address indexed from, address indexed to, uint tokens);\n event Approval(address indexed tokenOwner, address indexed spender, uint tokens);\n}\n\n\n// ----------------------------------------------------------------------------\n// Contract function to receive approval and execute function in one call\n//\n// Borrowed from MiniMeToken\n// ----------------------------------------------------------------------------\ncontract ApproveAndCallFallBack {\n function receiveApproval(address from, uint256 tokens, address token, bytes data) public;\n}\n\n\n// ----------------------------------------------------------------------------\n// Owned contract\n// ----------------------------------------------------------------------------\ncontract Owned {\n address public owner;\n address public newOwner;\n\n event OwnershipTransferred(address indexed _from, address indexed _to);\n\n constructor() public {\n owner = msg.sender;\n }\n\n modifier onlyOwner {\n require(msg.sender == owner);\n _;\n }\n\n function transferOwnership(address _newOwner) public onlyOwner {\n newOwner = _newOwner;\n }\n function acceptOwnership() public {\n require(msg.sender == newOwner);\n emit OwnershipTransferred(owner, newOwner);\n owner = newOwner;\n newOwner = address(0);\n }\n}\n\n\n// ----------------------------------------------------------------------------\n// ERC20 Token, with the addition of symbol, name and decimals and a\n// fixed supply\n// ----------------------------------------------------------------------------\ncontract TestToken is ERC20Interface, Owned {\n using SafeMath for uint;\n\n string public symbol;\n string public name;\n uint8 public decimals;\n uint _totalSupply;\n\n mapping(address => uint) balances;\n mapping(address => mapping(address => uint)) allowed;\n\n\n // ------------------------------------------------------------------------\n // Constructor\n // ------------------------------------------------------------------------\n constructor() public {\n symbol = \"TKN\";\n name = \"Token Example\";\n decimals = 18;\n _totalSupply = 1000000 * 10**uint(decimals);\n balances[owner] = _totalSupply;\n emit Transfer(address(0), owner, _totalSupply);\n }\n\n\n // ------------------------------------------------------------------------\n // Total supply\n // ------------------------------------------------------------------------\n function totalSupply() public view returns (uint) {\n return _totalSupply.sub(balances[address(0)]);\n }\n\n\n // ------------------------------------------------------------------------\n // Get the token balance for account `tokenOwner`\n // ------------------------------------------------------------------------\n function balanceOf(address tokenOwner) public view returns (uint balance) {\n return balances[tokenOwner];\n }\n\n\n // ------------------------------------------------------------------------\n // Transfer the balance from token owner's account to `to` account\n // - Owner's account must have sufficient balance to transfer\n // - 0 value transfers are allowed\n // ------------------------------------------------------------------------\n function transfer(address to, uint tokens) public returns (bool success) {\n balances[msg.sender] = balances[msg.sender].sub(tokens);\n balances[to] = balances[to].add(tokens);\n emit Transfer(msg.sender, to, tokens);\n return true;\n }\n\n\n // ------------------------------------------------------------------------\n // Token owner can approve for `spender` to transferFrom(...) `tokens`\n // from the token owner's account\n //\n // https://github.com/ethereum/EIPs/blob/master/EIPS/eip-20-token-standard.md\n // recommends that there are no checks for the approval double-spend attack\n // as this should be implemented in user interfaces \n // ------------------------------------------------------------------------\n function approve(address spender, uint tokens) public returns (bool success) {\n allowed[msg.sender][spender] = tokens;\n emit Approval(msg.sender, spender, tokens);\n return true;\n }\n\n\n // ------------------------------------------------------------------------\n // Transfer `tokens` from the `from` account to the `to` account\n // \n // The calling account must already have sufficient tokens approve(...)-d\n // for spending from the `from` account and\n // - From account must have sufficient balance to transfer\n // - Spender must have sufficient allowance to transfer\n // - 0 value transfers are allowed\n // ------------------------------------------------------------------------\n function transferFrom(address from, address to, uint tokens) public returns (bool success) {\n balances[from] = balances[from].sub(tokens);\n allowed[from][msg.sender] = allowed[from][msg.sender].sub(tokens);\n balances[to] = balances[to].add(tokens);\n emit Transfer(from, to, tokens);\n return true;\n }\n\n\n // ------------------------------------------------------------------------\n // Returns the amount of tokens approved by the owner that can be\n // transferred to the spender's account\n // ------------------------------------------------------------------------\n function allowance(address tokenOwner, address spender) public view returns (uint remaining) {\n return allowed[tokenOwner][spender];\n }\n\n\n // ------------------------------------------------------------------------\n // Token owner can approve for `spender` to transferFrom(...) `tokens`\n // from the token owner's account. 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