ad12381549
* update solidity-coverage to ^0.5.0 * update truffle dependency to ^4.1.8 * update solium to ^1.1.7 * update all contracts to solidity ^0.4.23
51 lines
1.2 KiB
Solidity
51 lines
1.2 KiB
Solidity
pragma solidity ^0.4.23;
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import "./ERC20Basic.sol";
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import "../../math/SafeMath.sol";
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/**
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* @title Basic token
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* @dev Basic version of StandardToken, with no allowances.
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*/
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contract BasicToken is ERC20Basic {
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using SafeMath for uint256;
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mapping(address => uint256) balances;
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uint256 totalSupply_;
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/**
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* @dev total number of tokens in existence
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*/
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function totalSupply() public view returns (uint256) {
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return totalSupply_;
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}
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/**
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* @dev transfer token for a specified address
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* @param _to The address to transfer to.
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* @param _value The amount to be transferred.
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*/
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function transfer(address _to, uint256 _value) public returns (bool) {
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require(_to != address(0));
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require(_value <= balances[msg.sender]);
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balances[msg.sender] = balances[msg.sender].sub(_value);
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balances[_to] = balances[_to].add(_value);
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emit Transfer(msg.sender, _to, _value);
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return true;
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}
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/**
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* @dev Gets the balance of the specified address.
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* @param _owner The address to query the the balance of.
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* @return An uint256 representing the amount owned by the passed address.
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*/
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function balanceOf(address _owner) public view returns (uint256) {
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return balances[_owner];
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}
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}
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