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Update EIP-6551: Update eip-6551.md #7159

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Update EIP-6551: Update eip-6551.md #7159

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20 changes: 14 additions & 6 deletions EIPS/eip-6551.md
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Original file line number Diff line number Diff line change
Expand Up @@ -243,14 +243,16 @@ Non-fungible token contracts that do not implement an `ownerOf` method, such as
```solidity
pragma solidity ^0.8.13;

import "openzeppelin-contracts/utils/introspection/IERC165.sol";
import "openzeppelin-contracts/token/ERC721/IERC721.sol";
import "openzeppelin-contracts/interfaces/IERC1271.sol";
import "openzeppelin-contracts/utils/cryptography/SignatureChecker.sol";
import "@openzeppelin/contracts/utils/introspection/IERC165.sol";
import "@openzeppelin/contracts/token/ERC721/IERC721.sol";
import "@openzeppelin/contracts/interfaces/IERC1271.sol";
import "@openzeppelin/contracts/utils/cryptography/SignatureChecker.sol";
import "sstore2/utils/Bytecode.sol";
import "./interfaces/IERC6551Account.sol";

contract ExampleERC6551Account is IERC165, IERC1271, IERC6551Account {
receive() external payable {}
uint256 private _nonce;

function executeCall(
address to,
Expand All @@ -267,6 +269,7 @@ contract ExampleERC6551Account is IERC165, IERC1271, IERC6551Account {
revert(add(result, 32), mload(result))
}
}
_nonce++;
}

function token()
Expand All @@ -278,7 +281,7 @@ contract ExampleERC6551Account is IERC165, IERC1271, IERC6551Account {
uint256 tokenId
)
{
uint256 length = address(this).code.length
uint256 length = address(this).code.length;
return
abi.decode(
Bytecode.codeAt(address(this), length - 0x60, length),
Expand Down Expand Up @@ -316,6 +319,10 @@ contract ExampleERC6551Account is IERC165, IERC1271, IERC6551Account {

return "";
}

function nonce() external view returns (uint256) {
return _nonce;
}
}
```

Expand All @@ -325,6 +332,7 @@ contract ExampleERC6551Account is IERC165, IERC1271, IERC6551Account {
pragma solidity ^0.8.13;

import "openzeppelin-contracts/utils/Create2.sol";
import "./interfaces/IERC6551Registry.sol";

contract ERC6551Registry is IERC6551Registry {
error InitializationFailed();
Expand All @@ -337,7 +345,7 @@ contract ERC6551Registry is IERC6551Registry {
uint256 salt,
bytes calldata initData
) external returns (address) {
bytes memory code = _creationCode(implementation, chainId, tokenContract, tokenId, salt)
bytes memory code = _creationCode(implementation, chainId, tokenContract, tokenId, salt);

address _account = Create2.computeAddress(
bytes32(salt),
Expand Down