04fc35707d
* Update contract pragmas to solidity 0.7 * Remove internal declaration on constructors * Reference SafeMath explicitely * Remove public constructor declaration from abstract contracts * Remove public constructor declaration from non-abstract contracts
24 lines
695 B
Solidity
24 lines
695 B
Solidity
// SPDX-License-Identifier: MIT
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pragma solidity ^0.7.0;
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import "./IERC721Receiver.sol";
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/**
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* @dev Implementation of the {IERC721Receiver} interface.
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*
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* Accepts all token transfers.
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* Make sure the contract is able to use its token with {IERC721-safeTransferFrom}, {IERC721-approve} or {IERC721-setApprovalForAll}.
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*/
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contract ERC721Holder is IERC721Receiver {
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/**
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* @dev See {IERC721Receiver-onERC721Received}.
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*
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* Always returns `IERC721Receiver.onERC721Received.selector`.
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*/
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function onERC721Received(address, address, uint256, bytes memory) public virtual override returns (bytes4) {
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return this.onERC721Received.selector;
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}
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}
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