forked from DecentralizedClimateFoundation/DCIPs
61 lines
2.5 KiB
Solidity
61 lines
2.5 KiB
Solidity
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// SPDX-License-Identifier: CC0-1.0
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pragma solidity ^0.8.0;
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/// @title EIP-4974 Ratings
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/// @dev See https://eips.ethereum.org/EIPS/EIP-4974
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/// Note: the EIP-165 identifier for this interface is #######.
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/// Must initialize contracts with an `operator` address that is not `address(0)`.
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interface IERC4974 /* is ERC165 */ {
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/// @dev Emits when operator changes.
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/// MUST emit when `operator` changes by any mechanism.
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/// MUST ONLY emit by `setOperator`.
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event NewOperator(address indexed _operator);
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/// @dev Emits when operator issues a rating.
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/// MUST emit when rating is assigned by any mechanism.
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/// MUST ONLY emit by `rate`.
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event Rating(address _rated, int8 _rating);
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/// @dev Emits when operator removes a rating.
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/// MUST emit when rating is removed by any mechanism.
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/// MUST ONLY emit by `remove`.
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event Removal(address _removed);
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/// @notice Appoint operator authority.
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/// @dev MUST throw unless `msg.sender` is `operator`.
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/// MUST throw if `operator` address is either already current `operator`
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/// or is the zero address.
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/// MUST emit an `Appointment` event.
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/// @param _operator New operator of the smart contract.
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function setOperator(address _operator) external;
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/// @notice Rate an address.
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/// MUST emit a Rating event with each successful call.
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/// @param _rated Address to be rated.
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/// @param _rating Total EXP tokens to reallocate.
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function rate(address _rated, int8 _rating) external;
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/// @notice Remove a rating from an address.
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/// MUST emit a Remove event with each successful call.
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/// @param _removed Address to be removed.
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function removeRating(address _removed) external;
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/// @notice Return a rated address' rating.
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/// @dev MUST register each time `Rating` emits.
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/// SHOULD throw for queries about the zero address.
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/// @param _rated An address for whom to query rating.
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/// @return int8 The rating assigned.
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function ratingOf(address _rated) external view returns (int8);
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}
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interface IERC165 {
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/// @notice Query if a contract implements an interface.
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/// @dev Interface identification is specified in EIP-165. This function
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/// uses less than 30,000 gas.
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/// @param interfaceID The interface identifier, as specified in EIP-165.
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/// @return bool `true` if the contract implements `interfaceID` and
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/// `interfaceID` is not 0xffffffff, `false` otherwise.
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function supportsInterface(bytes4 interfaceID) external view returns (bool);
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}
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