59 lines
1.9 KiB
Solidity
59 lines
1.9 KiB
Solidity
// SPDX-License-Identifier: MIT
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pragma solidity ^0.6.0;
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import "../../introspection/IERC165.sol";
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/**
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* https://eips.ethereum.org/EIPS/eip-214#specification
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* From the specification:
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* > Any attempts to make state-changing operations inside an execution instance with STATIC set to true will instead
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* throw an exception.
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* > These operations include [...], LOG0, LOG1, LOG2, [...]
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*
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* therefore, because this contract is staticcall'd we need to not emit events (which is how solidity-coverage works)
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* solidity-coverage ignores the /mocks folder, so we duplicate its implementation here to avoid instrumenting it
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*/
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contract SupportsInterfaceWithLookupMock is IERC165 {
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/*
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* bytes4(keccak256('supportsInterface(bytes4)')) == 0x01ffc9a7
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*/
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bytes4 public constant INTERFACE_ID_ERC165 = 0x01ffc9a7;
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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) private _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 () public {
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_registerInterface(INTERFACE_ID_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) public view override returns (bool) {
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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) internal {
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require(interfaceId != 0xffffffff, "ERC165InterfacesSupported: invalid interface id");
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_supportedInterfaces[interfaceId] = true;
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}
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}
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contract ERC165InterfacesSupported is SupportsInterfaceWithLookupMock {
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constructor (bytes4[] memory interfaceIds) public {
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for (uint256 i = 0; i < interfaceIds.length; i++) {
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_registerInterface(interfaceIds[i]);
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}
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}
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}
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