26 lines
1.4 KiB
Solidity
26 lines
1.4 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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/**
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* @title ERC3525 token receiver interface
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* @dev Interface for any contract that wants to support safeTransfers from ERC3525 contracts.
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* Note: the ERC-165 identifier for this interface is 0x009ce20b.
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*/
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interface IERC3525Receiver {
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/**
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* @notice Handle the receipt of an ERC3525 token value.
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* @dev An ERC3525 smart contract MUST call this function on the recipient contract after a
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* value transfer (i.e. `safeTransferFrom(uint256,uint256,uint256,bytes)`).
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* MUST return 0x009ce20b (i.e. `bytes4(keccak256('onERC3525Received(address,uint256,uint256,
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* uint256,bytes)'))`) if the transfer is accepted.
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* MUST revert or return any value other than 0x009ce20b if the transfer is rejected.
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* @param _operator The address which triggered the transfer
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* @param _fromTokenId The token id to transfer value from
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* @param _toTokenId The token id to transfer value to
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* @param _value The transferred value
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* @param _data Additional data with no specified format
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* @return `bytes4(keccak256('onERC3525Received(address,uint256,uint256,uint256,bytes)'))`
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* unless the transfer is rejected.
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*/
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function onERC3525Received(address _operator, uint256 _fromTokenId, uint256 _toTokenId, uint256 _value, bytes calldata _data) external returns (bytes4);
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}
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