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openzeppelin-contracts/contracts/mocks/ERC165/ERC165InterfacesSupported.sol
Nicolás Venturo 5471fc808a Updated code style to 4 space indentation and 120 characters per line. (#1508)
* Updated code style to 4 spaces and 120 max characters per line.

* Update contracts/token/ERC721/ERC721Pausable.sol

Co-Authored-By: nventuro <nicolas.venturo@gmail.com>

* Update contracts/token/ERC721/IERC721.sol

Co-Authored-By: nventuro <nicolas.venturo@gmail.com>
2018-11-22 16:53:30 -03:00

56 lines
1.8 KiB
Solidity

pragma solidity ^0.4.24;
import "../../introspection/IERC165.sol";
/**
* https://github.com/ethereum/EIPs/blob/master/EIPS/eip-214.md#specification
* > Any attempts to make state-changing operations inside an execution instance with STATIC set to true will instead throw an exception.
* > These operations include [...], LOG0, LOG1, LOG2, [...]
*
* therefore, because this contract is staticcall'd we need to not emit events (which is how solidity-coverage works)
* solidity-coverage ignores the /mocks folder, so we duplicate its implementation here to avoid instrumenting it
*/
contract SupportsInterfaceWithLookupMock is IERC165 {
bytes4 public constant InterfaceId_ERC165 = 0x01ffc9a7;
/**
* 0x01ffc9a7 ===
* bytes4(keccak256('supportsInterface(bytes4)'))
*/
/**
* @dev a mapping of interface id to whether or not it's supported
*/
mapping(bytes4 => bool) private _supportedInterfaces;
/**
* @dev A contract implementing SupportsInterfaceWithLookup
* implement ERC165 itself
*/
constructor () public {
_registerInterface(InterfaceId_ERC165);
}
/**
* @dev implement supportsInterface(bytes4) using a lookup table
*/
function supportsInterface(bytes4 interfaceId) external view returns (bool) {
return _supportedInterfaces[interfaceId];
}
/**
* @dev private method for registering an interface
*/
function _registerInterface(bytes4 interfaceId) internal {
require(interfaceId != 0xffffffff);
_supportedInterfaces[interfaceId] = true;
}
}
contract ERC165InterfacesSupported is SupportsInterfaceWithLookupMock {
constructor (bytes4[] interfaceIds) public {
for (uint256 i = 0; i < interfaceIds.length; i++) {
_registerInterface(interfaceIds[i]);
}
}
}