forked from DecentralizedClimateFoundation/DCIPs
34 lines
1.3 KiB
Solidity
34 lines
1.3 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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import "@openzeppelin/contracts/utils/introspection/IERC165.sol";
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interface IERC4671 is IERC165 {
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/// Event emitted when a token `tokenId` is minted for `owner`
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event Minted(address owner, uint256 tokenId);
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/// Event emitted when token `tokenId` of `owner` is revoked
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event Revoked(address owner, uint256 tokenId);
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/// @notice Count all tokens assigned to an owner
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/// @param owner Address for whom to query the balance
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/// @return Number of tokens owned by `owner`
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function balanceOf(address owner) external view returns (uint256);
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/// @notice Get owner of a token
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/// @param tokenId Identifier of the token
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/// @return Address of the owner of `tokenId`
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function ownerOf(uint256 tokenId) external view returns (address);
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/// @notice Check if a token hasn't been revoked
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/// @param tokenId Identifier of the token
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/// @return True if the token is valid, false otherwise
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function isValid(uint256 tokenId) external view returns (bool);
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/// @notice Check if an address owns a valid token in the contract
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/// @param owner Address for whom to check the ownership
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/// @return True if `owner` has a valid token, false otherwise
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function hasValid(address owner) external view returns (bool);
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}
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