2e0713becb
* rename ERC20 to IERC20 * move ERC20.sol to IERC20.sol * rename StandardToken to ERC20 * rename StandardTokenMock to ERC20Mock * move StandardToken.sol to ERC20.sol, likewise test and mock files * rename MintableToken to ERC20Mintable * move MintableToken.sol to ERC20Mintable.sol, likewise test and mock files * rename BurnableToken to ERC20Burnable * move BurnableToken.sol to ERC20Burnable.sol, likewise for related files * rename CappedToken to ERC20Capped * move CappedToken.sol to ERC20Capped.sol, likewise for related files * rename PausableToken to ERC20Pausable * move PausableToken.sol to ERC20Pausable.sol, likewise for related files * rename DetailedERC20 to ERC20Detailed * move DetailedERC20.sol to ERC20Detailed.sol, likewise for related files * rename ERC721 to IERC721, and likewise for other related interfaces * move ERC721.sol to IERC721.sol, likewise for other 721 interfaces * rename ERC721Token to ERC721 * move ERC721Token.sol to ERC721.sol, likewise for related files * rename ERC721BasicToken to ERC721Basic * move ERC721BasicToken.sol to ERC721Basic.sol, likewise for related files * rename ERC721PausableToken to ERC721Pausable * move ERC721PausableToken.sol to ERC721Pausable.sol * rename ERC165 to IERC165 * move ERC165.sol to IERC165.sol * amend comment that ERC20 is based on FirstBlood * fix comments mentioning IERC721Receiver
55 lines
1.1 KiB
Solidity
55 lines
1.1 KiB
Solidity
pragma solidity ^0.4.24;
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import "./IERC165.sol";
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/**
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* @title SupportsInterfaceWithLookup
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* @author Matt Condon (@shrugs)
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* @dev Implements ERC165 using a lookup table.
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*/
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contract SupportsInterfaceWithLookup is IERC165 {
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bytes4 public constant InterfaceId_ERC165 = 0x01ffc9a7;
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/**
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* 0x01ffc9a7 ===
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* bytes4(keccak256('supportsInterface(bytes4)'))
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*/
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/**
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* @dev a mapping of interface id to whether or not it's supported
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*/
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mapping(bytes4 => bool) internal supportedInterfaces_;
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/**
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* @dev A contract implementing SupportsInterfaceWithLookup
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* implement ERC165 itself
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*/
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constructor()
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public
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{
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_registerInterface(InterfaceId_ERC165);
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}
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/**
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* @dev implement supportsInterface(bytes4) using a lookup table
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*/
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function supportsInterface(bytes4 _interfaceId)
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external
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view
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returns (bool)
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{
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return supportedInterfaces_[_interfaceId];
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}
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/**
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* @dev private method for registering an interface
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*/
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function _registerInterface(bytes4 _interfaceId)
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internal
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{
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require(_interfaceId != 0xffffffff);
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supportedInterfaces_[_interfaceId] = true;
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}
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}
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