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remove Address.sol, replace isContract with address(...).code.length > 0 #817

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remove Address.sol, replace isContract with address(...).code.length > 0 #817

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39 changes: 25 additions & 14 deletions 40_ERC1155/ERC1155.sol
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Original file line number Diff line number Diff line change
Expand Up @@ -4,7 +4,6 @@ pragma solidity ^0.8.0;
import "./IERC1155.sol";
import "./IERC1155Receiver.sol";
import "./IERC1155MetadataURI.sol";
import "../34_ERC721/Address.sol";
import "../34_ERC721/String.sol";
import "../34_ERC721/IERC165.sol";

Expand All @@ -13,7 +12,6 @@ import "../34_ERC721/IERC165.sol";
* 见 https://eips.ethereum.org/EIPS/eip-1155
*/
contract ERC1155 is IERC165, IERC1155, IERC1155MetadataURI {
using Address for address; // 使用Address库，用isContract来判断地址是否为合约
using Strings for uint256; // 使用String库
// Token名称
string public name;
Expand Down Expand Up @@ -256,6 +254,9 @@ contract ERC1155 is IERC165, IERC1155, IERC1155MetadataURI {
emit TransferBatch(operator, from, address(0), ids, amounts);
}

// 错误 无效的接收者
error ERC1155InvalidReceiver(address receiver);

// @dev ERC1155的安全转账检查
function _doSafeTransferAcceptanceCheck(
address operator,
Expand All @@ -265,15 +266,20 @@ contract ERC1155 is IERC165, IERC1155, IERC1155MetadataURI {
uint256 amount,
bytes memory data
) private {
if (to.isContract()) {
if (to.code.length > 0) {
try IERC1155Receiver(to).onERC1155Received(operator, from, id, amount, data) returns (bytes4 response) {
if (response != IERC1155Receiver.onERC1155Received.selector) {
revert("ERC1155: ERC1155Receiver rejected tokens");
revert ERC1155InvalidReceiver(to);
}
} catch (bytes memory reason) {
if (reason.length == 0) {
revert ERC1155InvalidReceiver(to);
} else {
/// @solidity memory-safe-assembly
assembly {
revert(add(32, reason), mload(reason))
}
}
} catch Error(string memory reason) {
revert(reason);
} catch {
revert("ERC1155: transfer to non-ERC1155Receiver implementer");
}
}
}
Expand All @@ -287,17 +293,22 @@ contract ERC1155 is IERC165, IERC1155, IERC1155MetadataURI {
uint256[] memory amounts,
bytes memory data
) private {
if (to.isContract()) {
if (to.code.length > 0) {
try IERC1155Receiver(to).onERC1155BatchReceived(operator, from, ids, amounts, data) returns (
bytes4 response
) {
if (response != IERC1155Receiver.onERC1155BatchReceived.selector) {
revert("ERC1155: ERC1155Receiver rejected tokens");
revert ERC1155InvalidReceiver(to);
}
} catch (bytes memory reason) {
if (reason.length == 0) {
revert ERC1155InvalidReceiver(to);
} else {
/// @solidity memory-safe-assembly
assembly {
revert(add(32, reason), mload(reason))
}
}
} catch Error(string memory reason) {
revert(reason);
} catch {
revert("ERC1155: transfer to non-ERC1155Receiver implementer");
}
}
}
Expand Down
39 changes: 25 additions & 14 deletions 40_ERC1155/readme.md
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Original file line number Diff line number Diff line change
Expand Up @@ -240,7 +240,6 @@ pragma solidity ^0.8.0;
import "./IERC1155.sol";
import "./IERC1155Receiver.sol";
import "./IERC1155MetadataURI.sol";
import "https://github.com/AmazingAng/WTF-Solidity/blob/main/34_ERC721/Address.sol";
import "https://github.com/AmazingAng/WTF-Solidity/blob/main/34_ERC721/String.sol";
import "https://github.com/AmazingAng/WTF-Solidity/blob/main/34_ERC721/IERC165.sol";

Expand All @@ -249,7 +248,6 @@ import "https://github.com/AmazingAng/WTF-Solidity/blob/main/34_ERC721/IERC165.s
* 见 https://eips.ethereum.org/EIPS/eip-1155
*/
contract ERC1155 is IERC165, IERC1155, IERC1155MetadataURI {
using Address for address; // 使用Address库，用isContract来判断地址是否为合约
using Strings for uint256; // 使用String库
// Token名称
string public name;
Expand Down Expand Up @@ -492,6 +490,9 @@ contract ERC1155 is IERC165, IERC1155, IERC1155MetadataURI {
emit TransferBatch(operator, from, address(0), ids, amounts);
}

// 错误 无效的接收者
error ERC1155InvalidReceiver(address receiver);

// @dev ERC1155的安全转账检查
function _doSafeTransferAcceptanceCheck(
address operator,
Expand All @@ -501,15 +502,20 @@ contract ERC1155 is IERC165, IERC1155, IERC1155MetadataURI {
uint256 amount,
bytes memory data
) private {
if (to.isContract()) {
if (to.code.length > 0) {
try IERC1155Receiver(to).onERC1155Received(operator, from, id, amount, data) returns (bytes4 response) {
if (response != IERC1155Receiver.onERC1155Received.selector) {
revert("ERC1155: ERC1155Receiver rejected tokens");
revert ERC1155InvalidReceiver(to);
}
} catch (bytes memory reason) {
if (reason.length == 0) {
revert ERC1155InvalidReceiver(to);
} else {
/// @solidity memory-safe-assembly
assembly {
revert(add(32, reason), mload(reason))
}
}
} catch Error(string memory reason) {
revert(reason);
} catch {
revert("ERC1155: transfer to non-ERC1155Receiver implementer");
}
}
}
Expand All @@ -523,17 +529,22 @@ contract ERC1155 is IERC165, IERC1155, IERC1155MetadataURI {
uint256[] memory amounts,
bytes memory data
) private {
if (to.isContract()) {
if (to.code.length > 0) {
try IERC1155Receiver(to).onERC1155BatchReceived(operator, from, ids, amounts, data) returns (
bytes4 response
) {
if (response != IERC1155Receiver.onERC1155BatchReceived.selector) {
revert("ERC1155: ERC1155Receiver rejected tokens");
revert ERC1155InvalidReceiver(to);
}
} catch (bytes memory reason) {
if (reason.length == 0) {
revert ERC1155InvalidReceiver(to);
} else {
/// @solidity memory-safe-assembly
assembly {
revert(add(32, reason), mload(reason))
}
}
} catch Error(string memory reason) {
revert(reason);
} catch {
revert("ERC1155: transfer to non-ERC1155Receiver implementer");
}
}
}
Expand Down