5dfe7215a9
* Initial migration to Solidity 0.6.x - v3.0 first steps (#2063) * Initial migration, missing GSN, 721, 777 and Crowdsales. * Add _beforeTokenOperation and _afterTokenOperation. * Add documentation for hooks. * Add hooks doc * Add missing drafts * Add back ERC721 with hooks * Bring back ERC777 * Notes on hooks * Bring back GSN * Make functions virtual * Make GSN overrides explicit * Fix ERC20Pausable tests * Remove virtual from some view functions * Update linter * Delete examples * Remove unnecessary virtual * Remove roles from Pausable * Remove roles * Remove users of roles * Adapt ERC20 tests * Fix ERC721 tests * Add all ERC721 hooks * Add ERC777 hooks * Fix remaining tests * Bump compiler version * Move 721BurnableMock into mocks directory * Remove _before hooks * Fix tests * Upgrade linter * Put modifiers last * Remove _beforeTokenApproval and _beforeOperatorApproval hooks
54 lines
2.0 KiB
Solidity
54 lines
2.0 KiB
Solidity
pragma solidity ^0.6.0;
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import "../../introspection/IERC165.sol";
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/**
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* @dev Required interface of an ERC721 compliant contract.
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*/
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abstract contract IERC721 is IERC165 {
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event Transfer(address indexed from, address indexed to, uint256 indexed tokenId);
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event Approval(address indexed owner, address indexed approved, uint256 indexed tokenId);
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event ApprovalForAll(address indexed owner, address indexed operator, bool approved);
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/**
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* @dev Returns the number of NFTs in `owner`'s account.
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*/
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function balanceOf(address owner) public view virtual returns (uint256 balance);
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/**
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* @dev Returns the owner of the NFT specified by `tokenId`.
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*/
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function ownerOf(uint256 tokenId) public view virtual returns (address owner);
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/**
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* @dev Transfers a specific NFT (`tokenId`) from one account (`from`) to
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* another (`to`).
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*
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*
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*
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* Requirements:
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* - `from`, `to` cannot be zero.
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* - `tokenId` must be owned by `from`.
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* - If the caller is not `from`, it must be have been allowed to move this
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* NFT by either {approve} or {setApprovalForAll}.
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*/
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function safeTransferFrom(address from, address to, uint256 tokenId) public virtual;
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/**
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* @dev Transfers a specific NFT (`tokenId`) from one account (`from`) to
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* another (`to`).
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*
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* Requirements:
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* - If the caller is not `from`, it must be approved to move this NFT by
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* either {approve} or {setApprovalForAll}.
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*/
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function transferFrom(address from, address to, uint256 tokenId) public virtual;
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function approve(address to, uint256 tokenId) public virtual;
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function getApproved(uint256 tokenId) public view virtual returns (address operator);
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function setApprovalForAll(address operator, bool _approved) public virtual;
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function isApprovedForAll(address owner, address operator) public view virtual returns (bool);
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function safeTransferFrom(address from, address to, uint256 tokenId, bytes memory data) public virtual;
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}
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