4dcdd293e8
* make StandardToken state variables private
* simplify mocks
* document new internal functions
* fix link to ERC20 document
* revert order of Transfer and Mint events
* Revert "simplify mocks"
This reverts commit 371fe3e567.
* add tests for new internal functions
* add check for null account
* add checks for balances and allowance
* add inline docs to BurnableToken._burn
* remove redundant checks and clarify why
40 lines
1013 B
Solidity
40 lines
1013 B
Solidity
pragma solidity ^0.4.24;
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import "./StandardToken.sol";
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/**
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* @title Burnable Token
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* @dev Token that can be irreversibly burned (destroyed).
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*/
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contract BurnableToken is StandardToken {
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event Burn(address indexed burner, uint256 value);
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/**
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* @dev Burns a specific amount of tokens.
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* @param _value The amount of token to be burned.
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*/
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function burn(uint256 _value) public {
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_burn(msg.sender, _value);
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}
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/**
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* @dev Burns a specific amount of tokens from the target address and decrements allowance
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* @param _from address The address which you want to send tokens from
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* @param _value uint256 The amount of token to be burned
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*/
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function burnFrom(address _from, uint256 _value) public {
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_burnFrom(_from, _value);
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}
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/**
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* @dev Overrides StandardToken._burn in order for burn and burnFrom to emit
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* an additional Burn event.
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*/
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function _burn(address _who, uint256 _value) internal {
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super._burn(_who, _value);
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emit Burn(_who, _value);
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}
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}
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