Blockchain / Global / Address
Contract
0x7DA86eeB2A53EFd3d87EfF56350AEa2d4A2b5ed0
- Balance
- 0 SOMI
- Transactions sent
- 3
- Type
- Contract · 10,242 bytes of code
ERC1155Factory Verified
- Compiler
- solc 0.8.20+commit.a1b79de6
- Language
- Solidity
- Optimization
- Yes, 200 runs
- EVM version
- —
- License
- —
- Verified
- 2026-10-12
contracts/ERC1155Factory.sol
and 21 more files
Solidity
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.20;
import "./erc1155pausable.sol";
/// @title ERC1155Factory
/// @notice Factory contract for deploying MintErc1155Pausable contracts_old
/// @dev Allows developers to deploy their own ERC1155 contracts_old with a single transaction
contract ERC1155Factory {
/// @notice Emitted when a new ERC1155 contract is deployed
/// @param contractAddress The address of the newly deployed contract
/// @param owner The owner of the newly deployed contract
/// @param deployer The address that initiated the deployment
event ContractDeployed(
address indexed contractAddress,
address indexed owner,
address indexed deployer
);
/// @notice Mapping to track all contracts_old deployed by a specific address
mapping(address => address[]) public deployedContracts;
/// @notice Array of all deployed contracts_old
address[] public allDeployedContracts;
/// @notice Deploys a new MintErc1155Pausable contract
/// @dev The caller can specify a different owner or be the owner themselves
/// @param owner The address that will own the deployed contract
/// @return contractAddress The address of the newly deployed contract
function deployERC1155(address owner) external returns (address contractAddress) {
require(owner != address(0), "Owner cannot be zero address");
// Deploy new contract
MintErc1155Pausable newContract = new MintErc1155Pausable(owner);
contractAddress = address(newContract);
// Track deployment
deployedContracts[msg.sender].push(contractAddress);
allDeployedContracts.push(contractAddress);
emit ContractDeployed(contractAddress, owner, msg.sender);
}
/// @notice Deploys a new MintErc1155Pausable contract using CREATE2 for deterministic addresses
/// @dev Allows predicting the contract address before deployment
/// @param owner The address that will own the deployed contract
/// @param salt A unique value to generate a deterministic address
/// @return contractAddress The address of the newly deployed contract
function deployERC1155WithSalt(
address owner,
bytes32 salt
) external returns (address contractAddress) {
require(owner != address(0), "Owner cannot be zero address");
// Deploy new contract using CREATE2
MintErc1155Pausable newContract = new MintErc1155Pausable{salt: salt}(owner);
contractAddress = address(newContract);
// Track deployment
deployedContracts[msg.sender].push(contractAddress);
allDeployedContracts.push(contractAddress);
emit ContractDeployed(contractAddress, owner, msg.sender);
}
/// @notice Computes the address of a contract deployed with CREATE2
/// @dev Useful for predicting addresses before deployment
/// @param owner The address that will own the deployed contract
/// @param salt The salt value to use for CREATE2
/// @param deployer The address that will deploy the contract
/// @return The predicted contract address
function computeAddress(
address owner,
bytes32 salt,
address deployer
) external pure returns (address) {
bytes memory bytecode = abi.encodePacked(
type(MintErc1155Pausable).creationCode,
abi.encode(owner)
);
bytes32 hash = keccak256(
abi.encodePacked(
bytes1(0xff),
deployer,
salt,
keccak256(bytecode)
)
);
return address(uint160(uint256(hash)));
}
/// @notice Returns all contracts_old deployed by a specific address
/// @param deployer The address to query
/// @return An array of contract addresses deployed by the deployer
function getDeployedContracts(address deployer) external view returns (address[] memory) {
return deployedContracts[deployer];
}
/// @notice Returns the total number of contracts_old deployed through this factory
/// @return The total count of deployed contracts_old
function getTotalDeployed() external view returns (uint256) {
return allDeployedContracts.length;
}
/// @notice Returns a paginated list of all deployed contracts_old
/// @param offset The starting index
/// @param limit The maximum number of contracts_old to return
/// @return contracts An array of contract addresses
function getAllDeployedContracts(
uint256 offset,
uint256 limit
) external view returns (address[] memory contracts) {
require(offset < allDeployedContracts.length, "Offset out of bounds");
uint256 end = offset + limit;
if (end > allDeployedContracts.length) {
end = allDeployedContracts.length;
}
uint256 size = end - offset;
contracts = new address[](size);
for (uint256 i = 0; i < size; i++) {
contracts[i] = allDeployedContracts[offset + i];
}
}
}
Other files
@openzeppelin/contracts/access/Ownable.sol
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v5.0.0) (access/Ownable.sol) pragma solidity ^0.8.20; import {Context} from "../utils/Context.sol"; /** * @dev Contract module which provides a basic access control mechanism, where * there is an account (an owner) that can be granted exclusive access to * specific functions. * * The initial owner is set to the address provided by the deployer. This can * later be changed with {transferOwnership}. * * This module is used through inheritance. It will make available the modifier * `onlyOwner`, which can be applied to your functions to restrict their use to * the owner. */ abstract contract Ownable is Context { address private _owner; /** * @dev The caller account is not authorized to perform an operation. */ error OwnableUnauthorizedAccount(address account); /** * @dev The owner is not a valid owner account. (eg. `address(0)`) */ error OwnableInvalidOwner(address owner); event OwnershipTransferred(address indexed previousOwner, address indexed newOwner); /** * @dev Initializes the contract setting the address provided by the deployer as the initial owner. */ constructor(address initialOwner) { if (initialOwner == address(0)) { revert OwnableInvalidOwner(address(0)); } _transferOwnership(initialOwner); } /** * @dev Throws if called by any account other than the owner. */ modifier onlyOwner() { _checkOwner(); _; } /** * @dev Returns the address of the current owner. */ function owner() public view virtual returns (address) { return _owner; } /** * @dev Throws if the sender is not the owner. */ function _checkOwner() internal view virtual { if (owner() != _msgSender()) { revert OwnableUnauthorizedAccount(_msgSender()); } } /** * @dev Leaves the contract without owner. It will not be possible to call * `onlyOwner` functions. Can only be called by the current owner. * * NOTE: Renouncing ownership will leave the contract without an owner, * thereby disabling any functionality that is only available to the owner. */ function renounceOwnership() public virtual onlyOwner { _transferOwnership(address(0)); } /** * @dev Transfers ownership of the contract to a new account (`newOwner`). * Can only be called by the current owner. */ function transferOwnership(address newOwner) public virtual onlyOwner { if (newOwner == address(0)) { revert OwnableInvalidOwner(address(0)); } _transferOwnership(newOwner); } /** * @dev Transfers ownership of the contract to a new account (`newOwner`). * Internal function without access restriction. */ function _transferOwnership(address newOwner) internal virtual { address oldOwner = _owner; _owner = newOwner; emit OwnershipTransferred(oldOwner, newOwner); } }@openzeppelin/contracts/interfaces/draft-IERC6093.sol
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v5.4.0) (interfaces/draft-IERC6093.sol) pragma solidity >=0.8.4; /** * @dev Standard ERC-20 Errors * Interface of the https://eips.ethereum.org/EIPS/eip-6093[ERC-6093] custom errors for ERC-20 tokens. */ interface IERC20Errors { /** * @dev Indicates an error related to the current `balance` of a `sender`. Used in transfers. * @param sender Address whose tokens are being transferred. * @param balance Current balance for the interacting account. * @param needed Minimum amount required to perform a transfer. */ error ERC20InsufficientBalance(address sender, uint256 balance, uint256 needed); /** * @dev Indicates a failure with the token `sender`. Used in transfers. * @param sender Address whose tokens are being transferred. */ error ERC20InvalidSender(address sender); /** * @dev Indicates a failure with the token `receiver`. Used in transfers. * @param receiver Address to which tokens are being transferred. */ error ERC20InvalidReceiver(address receiver); /** * @dev Indicates a failure with the `spender`’s `allowance`. Used in transfers. * @param spender Address that may be allowed to operate on tokens without being their owner. * @param allowance Amount of tokens a `spender` is allowed to operate with. * @param needed Minimum amount required to perform a transfer. */ error ERC20InsufficientAllowance(address spender, uint256 allowance, uint256 needed); /** * @dev Indicates a failure with the `approver` of a token to be approved. Used in approvals. * @param approver Address initiating an approval operation. */ error ERC20InvalidApprover(address approver); /** * @dev Indicates a failure with the `spender` to be approved. Used in approvals. * @param spender Address that may be allowed to operate on tokens without being their owner. */ error ERC20InvalidSpender(address spender); } /** * @dev Standard ERC-721 Errors * Interface of the https://eips.ethereum.org/EIPS/eip-6093[ERC-6093] custom errors for ERC-721 tokens. */ interface IERC721Errors { /** * @dev Indicates that an address can't be an owner. For example, `address(0)` is a forbidden owner in ERC-20. * Used in balance queries. * @param owner Address of the current owner of a token. */ error ERC721InvalidOwner(address owner); /** * @dev Indicates a `tokenId` whose `owner` is the zero address. * @param tokenId Identifier number of a token. */ error ERC721NonexistentToken(uint256 tokenId); /** * @dev Indicates an error related to the ownership over a particular token. Used in transfers. * @param sender Address whose tokens are being transferred. * @param tokenId Identifier number of a token. * @param owner Address of the current owner of a token. */ error ERC721IncorrectOwner(address sender, uint256 tokenId, address owner); /** * @dev Indicates a failure with the token `sender`. Used in transfers. * @param sender Address whose tokens are being transferred. */ error ERC721InvalidSender(address sender); /** * @dev Indicates a failure with the token `receiver`. Used in transfers. * @param receiver Address to which tokens are being transferred. */ error ERC721InvalidReceiver(address receiver); /** * @dev Indicates a failure with the `operator`’s approval. Used in transfers. * @param operator Address that may be allowed to operate on tokens without being their owner. * @param tokenId Identifier number of a token. */ error ERC721InsufficientApproval(address operator, uint256 tokenId); /** * @dev Indicates a failure with the `approver` of a token to be approved. Used in approvals. * @param approver Address initiating an approval operation. */ error ERC721InvalidApprover(address approver); /** * @dev Indicates a failure with the `operator` to be approved. Used in approvals. * @param operator Address that may be allowed to operate on tokens without being their owner. */ error ERC721InvalidOperator(address operator); } /** * @dev Standard ERC-1155 Errors * Interface of the https://eips.ethereum.org/EIPS/eip-6093[ERC-6093] custom errors for ERC-1155 tokens. */ interface IERC1155Errors { /** * @dev Indicates an error related to the current `balance` of a `sender`. Used in transfers. * @param sender Address whose tokens are being transferred. * @param balance Current balance for the interacting account. * @param needed Minimum amount required to perform a transfer. * @param tokenId Identifier number of a token. */ error ERC1155InsufficientBalance(address sender, uint256 balance, uint256 needed, uint256 tokenId); /** * @dev Indicates a failure with the token `sender`. Used in transfers. * @param sender Address whose tokens are being transferred. */ error ERC1155InvalidSender(address sender); /** * @dev Indicates a failure with the token `receiver`. Used in transfers. * @param receiver Address to which tokens are being transferred. */ error ERC1155InvalidReceiver(address receiver); /** * @dev Indicates a failure with the `operator`’s approval. Used in transfers. * @param operator Address that may be allowed to operate on tokens without being their owner. * @param owner Address of the current owner of a token. */ error ERC1155MissingApprovalForAll(address operator, address owner); /** * @dev Indicates a failure with the `approver` of a token to be approved. Used in approvals. * @param approver Address initiating an approval operation. */ error ERC1155InvalidApprover(address approver); /** * @dev Indicates a failure with the `operator` to be approved. Used in approvals. * @param operator Address that may be allowed to operate on tokens without being their owner. */ error ERC1155InvalidOperator(address operator); /** * @dev Indicates an array length mismatch between ids and values in a safeBatchTransferFrom operation. * Used in batch transfers. * @param idsLength Length of the array of token identifiers * @param valuesLength Length of the array of token amounts */ error ERC1155InvalidArrayLength(uint256 idsLength, uint256 valuesLength); }@openzeppelin/contracts/token/ERC1155/ERC1155.sol
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v5.4.0) (token/ERC1155/ERC1155.sol) pragma solidity ^0.8.20; import {IERC1155} from "./IERC1155.sol"; import {IERC1155MetadataURI} from "./extensions/IERC1155MetadataURI.sol"; import {ERC1155Utils} from "./utils/ERC1155Utils.sol"; import {Context} from "../../utils/Context.sol"; import {IERC165, ERC165} from "../../utils/introspection/ERC165.sol"; import {Arrays} from "../../utils/Arrays.sol"; import {IERC1155Errors} from "../../interfaces/draft-IERC6093.sol"; /** * @dev Implementation of the basic standard multi-token. * See https://eips.ethereum.org/EIPS/eip-1155 * Originally based on code by Enjin: https://github.com/enjin/erc-1155 */ abstract contract ERC1155 is Context, ERC165, IERC1155, IERC1155MetadataURI, IERC1155Errors { using Arrays for uint256[]; using Arrays for address[]; mapping(uint256 id => mapping(address account => uint256)) private _balances; mapping(address account => mapping(address operator => bool)) private _operatorApprovals; // Used as the URI for all token types by relying on ID substitution, e.g. https://token-cdn-domain/{id}.json string private _uri; /** * @dev See {_setURI}. */ constructor(string memory uri_) { _setURI(uri_); } /// @inheritdoc IERC165 function supportsInterface(bytes4 interfaceId) public view virtual override(ERC165, IERC165) returns (bool) { return interfaceId == type(IERC1155).interfaceId || interfaceId == type(IERC1155MetadataURI).interfaceId || super.supportsInterface(interfaceId); } /** * @dev See {IERC1155MetadataURI-uri}. * * This implementation returns the same URI for *all* token types. It relies * on the token type ID substitution mechanism * https://eips.ethereum.org/EIPS/eip-1155#metadata[defined in the ERC]. * * Clients calling this function must replace the `\{id\}` substring with the * actual token type ID. */ function uri(uint256 /* id */) public view virtual returns (string memory) { return _uri; } /// @inheritdoc IERC1155 function balanceOf(address account, uint256 id) public view virtual returns (uint256) { return _balances[id][account]; } /** * @dev See {IERC1155-balanceOfBatch}. * * Requirements: * * - `accounts` and `ids` must have the same length. */ function balanceOfBatch( address[] memory accounts, uint256[] memory ids ) public view virtual returns (uint256[] memory) { if (accounts.length != ids.length) { revert ERC1155InvalidArrayLength(ids.length, accounts.length); } uint256[] memory batchBalances = new uint256[](accounts.length); for (uint256 i = 0; i < accounts.length; ++i) { batchBalances[i] = balanceOf(accounts.unsafeMemoryAccess(i), ids.unsafeMemoryAccess(i)); } return batchBalances; } /// @inheritdoc IERC1155 function setApprovalForAll(address operator, bool approved) public virtual { _setApprovalForAll(_msgSender(), operator, approved); } /// @inheritdoc IERC1155 function isApprovedForAll(address account, address operator) public view virtual returns (bool) { return _operatorApprovals[account][operator]; } /// @inheritdoc IERC1155 function safeTransferFrom(address from, address to, uint256 id, uint256 value, bytes memory data) public virtual { address sender = _msgSender(); if (from != sender && !isApprovedForAll(from, sender)) { revert ERC1155MissingApprovalForAll(sender, from); } _safeTransferFrom(from, to, id, value, data); } /// @inheritdoc IERC1155 function safeBatchTransferFrom( address from, address to, uint256[] memory ids, uint256[] memory values, bytes memory data ) public virtual { address sender = _msgSender(); if (from != sender && !isApprovedForAll(from, sender)) { revert ERC1155MissingApprovalForAll(sender, from); } _safeBatchTransferFrom(from, to, ids, values, data); } /** * @dev Transfers a `value` amount of tokens of type `id` from `from` to `to`. Will mint (or burn) if `from` * (or `to`) is the zero address. * * Emits a {TransferSingle} event if the arrays contain one element, and {TransferBatch} otherwise. * * Requirements: * * - If `to` refers to a smart contract, it must implement either {IERC1155Receiver-onERC1155Received} * or {IERC1155Receiver-onERC1155BatchReceived} and return the acceptance magic value. * - `ids` and `values` must have the same length. * * NOTE: The ERC-1155 acceptance check is not performed in this function. See {_updateWithAcceptanceCheck} instead. */ function _update(address from, address to, uint256[] memory ids, uint256[] memory values) internal virtual { if (ids.length != values.length) { revert ERC1155InvalidArrayLength(ids.length, values.length); } address operator = _msgSender(); for (uint256 i = 0; i < ids.length; ++i) { uint256 id = ids.unsafeMemoryAccess(i); uint256 value = values.unsafeMemoryAccess(i); if (from != address(0)) { uint256 fromBalance = _balances[id][from]; if (fromBalance < value) { revert ERC1155InsufficientBalance(from, fromBalance, value, id); } unchecked { // Overflow not possible: value <= fromBalance _balances[id][from] = fromBalance - value; } } if (to != address(0)) { _balances[id][to] += value; } } if (ids.length == 1) { uint256 id = ids.unsafeMemoryAccess(0); uint256 value = values.unsafeMemoryAccess(0); emit TransferSingle(operator, from, to, id, value); } else { emit TransferBatch(operator, from, to, ids, values); } } /** * @dev Version of {_update} that performs the token acceptance check by calling * {IERC1155Receiver-onERC1155Received} or {IERC1155Receiver-onERC1155BatchReceived} on the receiver address if it * contains code (eg. is a smart contract at the moment of execution). * * IMPORTANT: Overriding this function is discouraged because it poses a reentrancy risk from the receiver. So any * update to the contract state after this function would break the check-effect-interaction pattern. Consider * overriding {_update} instead. */ function _updateWithAcceptanceCheck( address from, address to, uint256[] memory ids, uint256[] memory values, bytes memory data ) internal virtual { _update(from, to, ids, values); if (to != address(0)) { address operator = _msgSender(); if (ids.length == 1) { uint256 id = ids.unsafeMemoryAccess(0); uint256 value = values.unsafeMemoryAccess(0); ERC1155Utils.checkOnERC1155Received(operator, from, to, id, value, data); } else { ERC1155Utils.checkOnERC1155BatchReceived(operator, from, to, ids, values, data); } } } /** * @dev Transfers a `value` tokens of token type `id` from `from` to `to`. * * Emits a {TransferSingle} event. * * Requirements: * * - `to` cannot be the zero address. * - `from` must have a balance of tokens of type `id` of at least `value` amount. * - If `to` refers to a smart contract, it must implement {IERC1155Receiver-onERC1155Received} and return the * acceptance magic value. */ function _safeTransferFrom(address from, address to, uint256 id, uint256 value, bytes memory data) internal { if (to == address(0)) { revert ERC1155InvalidReceiver(address(0)); } if (from == address(0)) { revert ERC1155InvalidSender(address(0)); } (uint256[] memory ids, uint256[] memory values) = _asSingletonArrays(id, value); _updateWithAcceptanceCheck(from, to, ids, values, data); } /** * @dev xref:ROOT:erc1155.adoc#batch-operations[Batched] version of {_safeTransferFrom}. * * Emits a {TransferBatch} event. * * Requirements: * * - If `to` refers to a smart contract, it must implement {IERC1155Receiver-onERC1155BatchReceived} and return the * acceptance magic value. * - `ids` and `values` must have the same length. */ function _safeBatchTransferFrom( address from, address to, uint256[] memory ids, uint256[] memory values, bytes memory data ) internal { if (to == address(0)) { revert ERC1155InvalidReceiver(address(0)); } if (from == address(0)) { revert ERC1155InvalidSender(address(0)); } _updateWithAcceptanceCheck(from, to, ids, values, data); } /** * @dev Sets a new URI for all token types, by relying on the token type ID * substitution mechanism * https://eips.ethereum.org/EIPS/eip-1155#metadata[defined in the ERC]. * * By this mechanism, any occurrence of the `\{id\}` substring in either the * URI or any of the values in the JSON file at said URI will be replaced by * clients with the token type ID. * * For example, the `https://token-cdn-domain/\{id\}.json` URI would be * interpreted by clients as * `https://token-cdn-domain/000000000000000000000000000000000000000000000000000000000004cce0.json` * for token type ID 0x4cce0. * * See {uri}. * * Because these URIs cannot be meaningfully represented by the {URI} event, * this function emits no events. */ function _setURI(string memory newuri) internal virtual { _uri = newuri; } /** * @dev Creates a `value` amount of tokens of type `id`, and assigns them to `to`. * * Emits a {TransferSingle} event. * * Requirements: * * - `to` cannot be the zero address. * - If `to` refers to a smart contract, it must implement {IERC1155Receiver-onERC1155Received} and return the * acceptance magic value. */ function _mint(address to, uint256 id, uint256 value, bytes memory data) internal { if (to == address(0)) { revert ERC1155InvalidReceiver(address(0)); } (uint256[] memory ids, uint256[] memory values) = _asSingletonArrays(id, value); _updateWithAcceptanceCheck(address(0), to, ids, values, data); } /** * @dev xref:ROOT:erc1155.adoc#batch-operations[Batched] version of {_mint}. * * Emits a {TransferBatch} event. * * Requirements: * * - `ids` and `values` must have the same length. * - `to` cannot be the zero address. * - If `to` refers to a smart contract, it must implement {IERC1155Receiver-onERC1155BatchReceived} and return the * acceptance magic value. */ function _mintBatch(address to, uint256[] memory ids, uint256[] memory values, bytes memory data) internal { if (to == address(0)) { revert ERC1155InvalidReceiver(address(0)); } _updateWithAcceptanceCheck(address(0), to, ids, values, data); } /** * @dev Destroys a `value` amount of tokens of type `id` from `from` * * Emits a {TransferSingle} event. * * Requirements: * * - `from` cannot be the zero address. * - `from` must have at least `value` amount of tokens of type `id`. */ function _burn(address from, uint256 id, uint256 value) internal { if (from == address(0)) { revert ERC1155InvalidSender(address(0)); } (uint256[] memory ids, uint256[] memory values) = _asSingletonArrays(id, value); _updateWithAcceptanceCheck(from, address(0), ids, values, ""); } /** * @dev xref:ROOT:erc1155.adoc#batch-operations[Batched] version of {_burn}. * * Emits a {TransferBatch} event. * * Requirements: * * - `from` cannot be the zero address. * - `from` must have at least `value` amount of tokens of type `id`. * - `ids` and `values` must have the same length. */ function _burnBatch(address from, uint256[] memory ids, uint256[] memory values) internal { if (from == address(0)) { revert ERC1155InvalidSender(address(0)); } _updateWithAcceptanceCheck(from, address(0), ids, values, ""); } /** * @dev Approve `operator` to operate on all of `owner` tokens * * Emits an {ApprovalForAll} event. * * Requirements: * * - `operator` cannot be the zero address. */ function _setApprovalForAll(address owner, address operator, bool approved) internal virtual { if (operator == address(0)) { revert ERC1155InvalidOperator(address(0)); } _operatorApprovals[owner][operator] = approved; emit ApprovalForAll(owner, operator, approved); } /** * @dev Creates an array in memory with only one value for each of the elements provided. */ function _asSingletonArrays( uint256 element1, uint256 element2 ) private pure returns (uint256[] memory array1, uint256[] memory array2) { assembly ("memory-safe") { // Load the free memory pointer array1 := mload(0x40) // Set array length to 1 mstore(array1, 1) // Store the single element at the next word after the length (where content starts) mstore(add(array1, 0x20), element1) // Repeat for next array locating it right after the first array array2 := add(array1, 0x40) mstore(array2, 1) mstore(add(array2, 0x20), element2) // Update the free memory pointer by pointing after the second array mstore(0x40, add(array2, 0x40)) } } }@openzeppelin/contracts/token/ERC1155/IERC1155.sol
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v5.4.0) (token/ERC1155/IERC1155.sol) pragma solidity >=0.6.2; import {IERC165} from "../../utils/introspection/IERC165.sol"; /** * @dev Required interface of an ERC-1155 compliant contract, as defined in the * https://eips.ethereum.org/EIPS/eip-1155[ERC]. */ interface IERC1155 is IERC165 { /** * @dev Emitted when `value` amount of tokens of type `id` are transferred from `from` to `to` by `operator`. */ event TransferSingle(address indexed operator, address indexed from, address indexed to, uint256 id, uint256 value); /** * @dev Equivalent to multiple {TransferSingle} events, where `operator`, `from` and `to` are the same for all * transfers. */ event TransferBatch( address indexed operator, address indexed from, address indexed to, uint256[] ids, uint256[] values ); /** * @dev Emitted when `account` grants or revokes permission to `operator` to transfer their tokens, according to * `approved`. */ event ApprovalForAll(address indexed account, address indexed operator, bool approved); /** * @dev Emitted when the URI for token type `id` changes to `value`, if it is a non-programmatic URI. * * If an {URI} event was emitted for `id`, the standard * https://eips.ethereum.org/EIPS/eip-1155#metadata-extensions[guarantees] that `value` will equal the value * returned by {IERC1155MetadataURI-uri}. */ event URI(string value, uint256 indexed id); /** * @dev Returns the value of tokens of token type `id` owned by `account`. */ function balanceOf(address account, uint256 id) external view returns (uint256); /** * @dev xref:ROOT:erc1155.adoc#batch-operations[Batched] version of {balanceOf}. * * Requirements: * * - `accounts` and `ids` must have the same length. */ function balanceOfBatch( address[] calldata accounts, uint256[] calldata ids ) external view returns (uint256[] memory); /** * @dev Grants or revokes permission to `operator` to transfer the caller's tokens, according to `approved`, * * Emits an {ApprovalForAll} event. * * Requirements: * * - `operator` cannot be the zero address. */ function setApprovalForAll(address operator, bool approved) external; /** * @dev Returns true if `operator` is approved to transfer ``account``'s tokens. * * See {setApprovalForAll}. */ function isApprovedForAll(address account, address operator) external view returns (bool); /** * @dev Transfers a `value` amount of tokens of type `id` from `from` to `to`. * * WARNING: This function can potentially allow a reentrancy attack when transferring tokens * to an untrusted contract, when invoking {IERC1155Receiver-onERC1155Received} on the receiver. * Ensure to follow the checks-effects-interactions pattern and consider employing * reentrancy guards when interacting with untrusted contracts. * * Emits a {TransferSingle} event. * * Requirements: * * - `to` cannot be the zero address. * - If the caller is not `from`, it must have been approved to spend ``from``'s tokens via {setApprovalForAll}. * - `from` must have a balance of tokens of type `id` of at least `value` amount. * - If `to` refers to a smart contract, it must implement {IERC1155Receiver-onERC1155Received} and return the * acceptance magic value. */ function safeTransferFrom(address from, address to, uint256 id, uint256 value, bytes calldata data) external; /** * @dev xref:ROOT:erc1155.adoc#batch-operations[Batched] version of {safeTransferFrom}. * * WARNING: This function can potentially allow a reentrancy attack when transferring tokens * to an untrusted contract, when invoking {IERC1155Receiver-onERC1155BatchReceived} on the receiver. * Ensure to follow the checks-effects-interactions pattern and consider employing * reentrancy guards when interacting with untrusted contracts. * * Emits either a {TransferSingle} or a {TransferBatch} event, depending on the length of the array arguments. * * Requirements: * * - `ids` and `values` must have the same length. * - If `to` refers to a smart contract, it must implement {IERC1155Receiver-onERC1155BatchReceived} and return the * acceptance magic value. */ function safeBatchTransferFrom( address from, address to, uint256[] calldata ids, uint256[] calldata values, bytes calldata data ) external; }@openzeppelin/contracts/token/ERC1155/IERC1155Receiver.sol
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v5.4.0) (token/ERC1155/IERC1155Receiver.sol) pragma solidity >=0.6.2; import {IERC165} from "../../utils/introspection/IERC165.sol"; /** * @dev Interface that must be implemented by smart contracts in order to receive * ERC-1155 token transfers. */ interface IERC1155Receiver is IERC165 { /** * @dev Handles the receipt of a single ERC-1155 token type. This function is * called at the end of a `safeTransferFrom` after the balance has been updated. * * NOTE: To accept the transfer, this must return * `bytes4(keccak256("onERC1155Received(address,address,uint256,uint256,bytes)"))` * (i.e. 0xf23a6e61, or its own function selector). * * @param operator The address which initiated the transfer (i.e. msg.sender) * @param from The address which previously owned the token * @param id The ID of the token being transferred * @param value The amount of tokens being transferred * @param data Additional data with no specified format * @return `bytes4(keccak256("onERC1155Received(address,address,uint256,uint256,bytes)"))` if transfer is allowed */ function onERC1155Received( address operator, address from, uint256 id, uint256 value, bytes calldata data ) external returns (bytes4); /** * @dev Handles the receipt of a multiple ERC-1155 token types. This function * is called at the end of a `safeBatchTransferFrom` after the balances have * been updated. * * NOTE: To accept the transfer(s), this must return * `bytes4(keccak256("onERC1155BatchReceived(address,address,uint256[],uint256[],bytes)"))` * (i.e. 0xbc197c81, or its own function selector). * * @param operator The address which initiated the batch transfer (i.e. msg.sender) * @param from The address which previously owned the token * @param ids An array containing ids of each token being transferred (order and length must match values array) * @param values An array containing amounts of each token being transferred (order and length must match ids array) * @param data Additional data with no specified format * @return `bytes4(keccak256("onERC1155BatchReceived(address,address,uint256[],uint256[],bytes)"))` if transfer is allowed */ function onERC1155BatchReceived( address operator, address from, uint256[] calldata ids, uint256[] calldata values, bytes calldata data ) external returns (bytes4); }@openzeppelin/contracts/token/ERC1155/extensions/ERC1155Pausable.sol
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v5.1.0) (token/ERC1155/extensions/ERC1155Pausable.sol) pragma solidity ^0.8.20; import {ERC1155} from "../ERC1155.sol"; import {Pausable} from "../../../utils/Pausable.sol"; /** * @dev ERC-1155 token with pausable token transfers, minting and burning. * * Useful for scenarios such as preventing trades until the end of an evaluation * period, or having an emergency switch for freezing all token transfers in the * event of a large bug. * * IMPORTANT: This contract does not include public pause and unpause functions. In * addition to inheriting this contract, you must define both functions, invoking the * {Pausable-_pause} and {Pausable-_unpause} internal functions, with appropriate * access control, e.g. using {AccessControl} or {Ownable}. Not doing so will * make the contract pause mechanism of the contract unreachable, and thus unusable. */ abstract contract ERC1155Pausable is ERC1155, Pausable { /** * @dev See {ERC1155-_update}. * * Requirements: * * - the contract must not be paused. */ function _update( address from, address to, uint256[] memory ids, uint256[] memory values ) internal virtual override whenNotPaused { super._update(from, to, ids, values); } }@openzeppelin/contracts/token/ERC1155/extensions/ERC1155Supply.sol
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v5.4.0) (token/ERC1155/extensions/ERC1155Supply.sol) pragma solidity ^0.8.20; import {ERC1155} from "../ERC1155.sol"; import {Arrays} from "../../../utils/Arrays.sol"; /** * @dev Extension of ERC-1155 that adds tracking of total supply per id. * * Useful for scenarios where Fungible and Non-fungible tokens have to be * clearly identified. Note: While a totalSupply of 1 might mean the * corresponding is an NFT, there is no guarantees that no other token with the * same id are not going to be minted. * * NOTE: This contract implies a global limit of 2**256 - 1 to the number of tokens * that can be minted. * * CAUTION: This extension should not be added in an upgrade to an already deployed contract. */ abstract contract ERC1155Supply is ERC1155 { using Arrays for uint256[]; mapping(uint256 id => uint256) private _totalSupply; uint256 private _totalSupplyAll; /** * @dev Total value of tokens in with a given id. */ function totalSupply(uint256 id) public view virtual returns (uint256) { return _totalSupply[id]; } /** * @dev Total value of tokens. */ function totalSupply() public view virtual returns (uint256) { return _totalSupplyAll; } /** * @dev Indicates whether any token exist with a given id, or not. */ function exists(uint256 id) public view virtual returns (bool) { return totalSupply(id) > 0; } /// @inheritdoc ERC1155 function _update( address from, address to, uint256[] memory ids, uint256[] memory values ) internal virtual override { super._update(from, to, ids, values); if (from == address(0)) { uint256 totalMintValue = 0; for (uint256 i = 0; i < ids.length; ++i) { uint256 value = values.unsafeMemoryAccess(i); // Overflow check required: The rest of the code assumes that totalSupply never overflows _totalSupply[ids.unsafeMemoryAccess(i)] += value; totalMintValue += value; } // Overflow check required: The rest of the code assumes that totalSupplyAll never overflows _totalSupplyAll += totalMintValue; } if (to == address(0)) { uint256 totalBurnValue = 0; for (uint256 i = 0; i < ids.length; ++i) { uint256 value = values.unsafeMemoryAccess(i); unchecked { // Overflow not possible: values[i] <= balanceOf(from, ids[i]) <= totalSupply(ids[i]) _totalSupply[ids.unsafeMemoryAccess(i)] -= value; // Overflow not possible: sum_i(values[i]) <= sum_i(totalSupply(ids[i])) <= totalSupplyAll totalBurnValue += value; } } unchecked { // Overflow not possible: totalBurnValue = sum_i(values[i]) <= sum_i(totalSupply(ids[i])) <= totalSupplyAll _totalSupplyAll -= totalBurnValue; } } } }@openzeppelin/contracts/token/ERC1155/extensions/IERC1155MetadataURI.sol
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v5.4.0) (token/ERC1155/extensions/IERC1155MetadataURI.sol) pragma solidity >=0.6.2; import {IERC1155} from "../IERC1155.sol"; /** * @dev Interface of the optional ERC1155MetadataExtension interface, as defined * in the https://eips.ethereum.org/EIPS/eip-1155#metadata-extensions[ERC]. */ interface IERC1155MetadataURI is IERC1155 { /** * @dev Returns the URI for token type `id`. * * If the `\{id\}` substring is present in the URI, it must be replaced by * clients with the actual token type ID. */ function uri(uint256 id) external view returns (string memory); }@openzeppelin/contracts/token/ERC1155/utils/ERC1155Utils.sol
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v5.4.0) (token/ERC1155/utils/ERC1155Utils.sol) pragma solidity ^0.8.20; import {IERC1155Receiver} from "../IERC1155Receiver.sol"; import {IERC1155Errors} from "../../../interfaces/draft-IERC6093.sol"; /** * @dev Library that provide common ERC-1155 utility functions. * * See https://eips.ethereum.org/EIPS/eip-1155[ERC-1155]. * * _Available since v5.1._ */ library ERC1155Utils { /** * @dev Performs an acceptance check for the provided `operator` by calling {IERC1155Receiver-onERC1155Received} * on the `to` address. The `operator` is generally the address that initiated the token transfer (i.e. `msg.sender`). * * The acceptance call is not executed and treated as a no-op if the target address doesn't contain code (i.e. an EOA). * Otherwise, the recipient must implement {IERC1155Receiver-onERC1155Received} and return the acceptance magic value to accept * the transfer. */ function checkOnERC1155Received( address operator, address from, address to, uint256 id, uint256 value, bytes memory data ) internal { if (to.code.length > 0) { try IERC1155Receiver(to).onERC1155Received(operator, from, id, value, data) returns (bytes4 response) { if (response != IERC1155Receiver.onERC1155Received.selector) { // Tokens rejected revert IERC1155Errors.ERC1155InvalidReceiver(to); } } catch (bytes memory reason) { if (reason.length == 0) { // non-IERC1155Receiver implementer revert IERC1155Errors.ERC1155InvalidReceiver(to); } else { assembly ("memory-safe") { revert(add(reason, 0x20), mload(reason)) } } } } } /** * @dev Performs a batch acceptance check for the provided `operator` by calling {IERC1155Receiver-onERC1155BatchReceived} * on the `to` address. The `operator` is generally the address that initiated the token transfer (i.e. `msg.sender`). * * The acceptance call is not executed and treated as a no-op if the target address doesn't contain code (i.e. an EOA). * Otherwise, the recipient must implement {IERC1155Receiver-onERC1155Received} and return the acceptance magic value to accept * the transfer. */ function checkOnERC1155BatchReceived( address operator, address from, address to, uint256[] memory ids, uint256[] memory values, bytes memory data ) internal { if (to.code.length > 0) { try IERC1155Receiver(to).onERC1155BatchReceived(operator, from, ids, values, data) returns ( bytes4 response ) { if (response != IERC1155Receiver.onERC1155BatchReceived.selector) { // Tokens rejected revert IERC1155Errors.ERC1155InvalidReceiver(to); } } catch (bytes memory reason) { if (reason.length == 0) { // non-IERC1155Receiver implementer revert IERC1155Errors.ERC1155InvalidReceiver(to); } else { assembly ("memory-safe") { revert(add(reason, 0x20), mload(reason)) } } } } } }@openzeppelin/contracts/utils/Arrays.sol
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v5.4.0) (utils/Arrays.sol) // This file was procedurally generated from scripts/generate/templates/Arrays.js. pragma solidity ^0.8.20; import {Comparators} from "./Comparators.sol"; import {SlotDerivation} from "./SlotDerivation.sol"; import {StorageSlot} from "./StorageSlot.sol"; import {Math} from "./math/Math.sol"; /** * @dev Collection of functions related to array types. */ library Arrays { using SlotDerivation for bytes32; using StorageSlot for bytes32; /** * @dev Sort an array of uint256 (in memory) following the provided comparator function. * * This function does the sorting "in place", meaning that it overrides the input. The object is returned for * convenience, but that returned value can be discarded safely if the caller has a memory pointer to the array. * * NOTE: this function's cost is `O(n · log(n))` in average and `O(n²)` in the worst case, with n the length of the * array. Using it in view functions that are executed through `eth_call` is safe, but one should be very careful * when executing this as part of a transaction. If the array being sorted is too large, the sort operation may * consume more gas than is available in a block, leading to potential DoS. * * IMPORTANT: Consider memory side-effects when using custom comparator functions that access memory in an unsafe way. */ function sort( uint256[] memory array, function(uint256, uint256) pure returns (bool) comp ) internal pure returns (uint256[] memory) { _quickSort(_begin(array), _end(array), comp); return array; } /** * @dev Variant of {sort} that sorts an array of uint256 in increasing order. */ function sort(uint256[] memory array) internal pure returns (uint256[] memory) { sort(array, Comparators.lt); return array; } /** * @dev Sort an array of address (in memory) following the provided comparator function. * * This function does the sorting "in place", meaning that it overrides the input. The object is returned for * convenience, but that returned value can be discarded safely if the caller has a memory pointer to the array. * * NOTE: this function's cost is `O(n · log(n))` in average and `O(n²)` in the worst case, with n the length of the * array. Using it in view functions that are executed through `eth_call` is safe, but one should be very careful * when executing this as part of a transaction. If the array being sorted is too large, the sort operation may * consume more gas than is available in a block, leading to potential DoS. * * IMPORTANT: Consider memory side-effects when using custom comparator functions that access memory in an unsafe way. */ function sort( address[] memory array, function(address, address) pure returns (bool) comp ) internal pure returns (address[] memory) { sort(_castToUint256Array(array), _castToUint256Comp(comp)); return array; } /** * @dev Variant of {sort} that sorts an array of address in increasing order. */ function sort(address[] memory array) internal pure returns (address[] memory) { sort(_castToUint256Array(array), Comparators.lt); return array; } /** * @dev Sort an array of bytes32 (in memory) following the provided comparator function. * * This function does the sorting "in place", meaning that it overrides the input. The object is returned for * convenience, but that returned value can be discarded safely if the caller has a memory pointer to the array. * * NOTE: this function's cost is `O(n · log(n))` in average and `O(n²)` in the worst case, with n the length of the * array. Using it in view functions that are executed through `eth_call` is safe, but one should be very careful * when executing this as part of a transaction. If the array being sorted is too large, the sort operation may * consume more gas than is available in a block, leading to potential DoS. * * IMPORTANT: Consider memory side-effects when using custom comparator functions that access memory in an unsafe way. */ function sort( bytes32[] memory array, function(bytes32, bytes32) pure returns (bool) comp ) internal pure returns (bytes32[] memory) { sort(_castToUint256Array(array), _castToUint256Comp(comp)); return array; } /** * @dev Variant of {sort} that sorts an array of bytes32 in increasing order. */ function sort(bytes32[] memory array) internal pure returns (bytes32[] memory) { sort(_castToUint256Array(array), Comparators.lt); return array; } /** * @dev Performs a quick sort of a segment of memory. The segment sorted starts at `begin` (inclusive), and stops * at end (exclusive). Sorting follows the `comp` comparator. * * Invariant: `begin <= end`. This is the case when initially called by {sort} and is preserved in subcalls. * * IMPORTANT: Memory locations between `begin` and `end` are not validated/zeroed. This function should * be used only if the limits are within a memory array. */ function _quickSort(uint256 begin, uint256 end, function(uint256, uint256) pure returns (bool) comp) private pure { unchecked { if (end - begin < 0x40) return; // Use first element as pivot uint256 pivot = _mload(begin); // Position where the pivot should be at the end of the loop uint256 pos = begin; for (uint256 it = begin + 0x20; it < end; it += 0x20) { if (comp(_mload(it), pivot)) { // If the value stored at the iterator's position comes before the pivot, we increment the // position of the pivot and move the value there. pos += 0x20; _swap(pos, it); } } _swap(begin, pos); // Swap pivot into place _quickSort(begin, pos, comp); // Sort the left side of the pivot _quickSort(pos + 0x20, end, comp); // Sort the right side of the pivot } } /** * @dev Pointer to the memory location of the first element of `array`. */ function _begin(uint256[] memory array) private pure returns (uint256 ptr) { assembly ("memory-safe") { ptr := add(array, 0x20) } } /** * @dev Pointer to the memory location of the first memory word (32bytes) after `array`. This is the memory word * that comes just after the last element of the array. */ function _end(uint256[] memory array) private pure returns (uint256 ptr) { unchecked { return _begin(array) + array.length * 0x20; } } /** * @dev Load memory word (as a uint256) at location `ptr`. */ function _mload(uint256 ptr) private pure returns (uint256 value) { assembly { value := mload(ptr) } } /** * @dev Swaps the elements memory location `ptr1` and `ptr2`. */ function _swap(uint256 ptr1, uint256 ptr2) private pure { assembly { let value1 := mload(ptr1) let value2 := mload(ptr2) mstore(ptr1, value2) mstore(ptr2, value1) } } /// @dev Helper: low level cast address memory array to uint256 memory array function _castToUint256Array(address[] memory input) private pure returns (uint256[] memory output) { assembly { output := input } } /// @dev Helper: low level cast bytes32 memory array to uint256 memory array function _castToUint256Array(bytes32[] memory input) private pure returns (uint256[] memory output) { assembly { output := input } } /// @dev Helper: low level cast address comp function to uint256 comp function function _castToUint256Comp( function(address, address) pure returns (bool) input ) private pure returns (function(uint256, uint256) pure returns (bool) output) { assembly { output := input } } /// @dev Helper: low level cast bytes32 comp function to uint256 comp function function _castToUint256Comp( function(bytes32, bytes32) pure returns (bool) input ) private pure returns (function(uint256, uint256) pure returns (bool) output) { assembly { output := input } } /** * @dev Searches a sorted `array` and returns the first index that contains * a value greater or equal to `element`. If no such index exists (i.e. all * values in the array are strictly less than `element`), the array length is * returned. Time complexity O(log n). * * NOTE: The `array` is expected to be sorted in ascending order, and to * contain no repeated elements. * * IMPORTANT: Deprecated. This implementation behaves as {lowerBound} but lacks * support for repeated elements in the array. The {lowerBound} function should * be used instead. */ function findUpperBound(uint256[] storage array, uint256 element) internal view returns (uint256) { uint256 low = 0; uint256 high = array.length; if (high == 0) { return 0; } while (low < high) { uint256 mid = Math.average(low, high); // Note that mid will always be strictly less than high (i.e. it will be a valid array index) // because Math.average rounds towards zero (it does integer division with truncation). if (unsafeAccess(array, mid).value > element) { high = mid; } else { low = mid + 1; } } // At this point `low` is the exclusive upper bound. We will return the inclusive upper bound. if (low > 0 && unsafeAccess(array, low - 1).value == element) { return low - 1; } else { return low; } } /** * @dev Searches an `array` sorted in ascending order and returns the first * index that contains a value greater or equal than `element`. If no such index * exists (i.e. all values in the array are strictly less than `element`), the array * length is returned. Time complexity O(log n). * * See C++'s https://en.cppreference.com/w/cpp/algorithm/lower_bound[lower_bound]. */ function lowerBound(uint256[] storage array, uint256 element) internal view returns (uint256) { uint256 low = 0; uint256 high = array.length; if (high == 0) { return 0; } while (low < high) { uint256 mid = Math.average(low, high); // Note that mid will always be strictly less than high (i.e. it will be a valid array index) // because Math.average rounds towards zero (it does integer division with truncation). if (unsafeAccess(array, mid).value < element) { // this cannot overflow because mid < high unchecked { low = mid + 1; } } else { high = mid; } } return low; } /** * @dev Searches an `array` sorted in ascending order and returns the first * index that contains a value strictly greater than `element`. If no such index * exists (i.e. all values in the array are strictly less than `element`), the array * length is returned. Time complexity O(log n). * * See C++'s https://en.cppreference.com/w/cpp/algorithm/upper_bound[upper_bound]. */ function upperBound(uint256[] storage array, uint256 element) internal view returns (uint256) { uint256 low = 0; uint256 high = array.length; if (high == 0) { return 0; } while (low < high) { uint256 mid = Math.average(low, high); // Note that mid will always be strictly less than high (i.e. it will be a valid array index) // because Math.average rounds towards zero (it does integer division with truncation). if (unsafeAccess(array, mid).value > element) { high = mid; } else { // this cannot overflow because mid < high unchecked { low = mid + 1; } } } return low; } /** * @dev Same as {lowerBound}, but with an array in memory. */ function lowerBoundMemory(uint256[] memory array, uint256 element) internal pure returns (uint256) { uint256 low = 0; uint256 high = array.length; if (high == 0) { return 0; } while (low < high) { uint256 mid = Math.average(low, high); // Note that mid will always be strictly less than high (i.e. it will be a valid array index) // because Math.average rounds towards zero (it does integer division with truncation). if (unsafeMemoryAccess(array, mid) < element) { // this cannot overflow because mid < high unchecked { low = mid + 1; } } else { high = mid; } } return low; } /** * @dev Same as {upperBound}, but with an array in memory. */ function upperBoundMemory(uint256[] memory array, uint256 element) internal pure returns (uint256) { uint256 low = 0; uint256 high = array.length; if (high == 0) { return 0; } while (low < high) { uint256 mid = Math.average(low, high); // Note that mid will always be strictly less than high (i.e. it will be a valid array index) // because Math.average rounds towards zero (it does integer division with truncation). if (unsafeMemoryAccess(array, mid) > element) { high = mid; } else { // this cannot overflow because mid < high unchecked { low = mid + 1; } } } return low; } /** * @dev Access an array in an "unsafe" way. Skips solidity "index-out-of-range" check. * * WARNING: Only use if you are certain `pos` is lower than the array length. */ function unsafeAccess(address[] storage arr, uint256 pos) internal pure returns (StorageSlot.AddressSlot storage) { bytes32 slot; assembly ("memory-safe") { slot := arr.slot } return slot.deriveArray().offset(pos).getAddressSlot(); } /** * @dev Access an array in an "unsafe" way. Skips solidity "index-out-of-range" check. * * WARNING: Only use if you are certain `pos` is lower than the array length. */ function unsafeAccess(bytes32[] storage arr, uint256 pos) internal pure returns (StorageSlot.Bytes32Slot storage) { bytes32 slot; assembly ("memory-safe") { slot := arr.slot } return slot.deriveArray().offset(pos).getBytes32Slot(); } /** * @dev Access an array in an "unsafe" way. Skips solidity "index-out-of-range" check. * * WARNING: Only use if you are certain `pos` is lower than the array length. */ function unsafeAccess(uint256[] storage arr, uint256 pos) internal pure returns (StorageSlot.Uint256Slot storage) { bytes32 slot; assembly ("memory-safe") { slot := arr.slot } return slot.deriveArray().offset(pos).getUint256Slot(); } /** * @dev Access an array in an "unsafe" way. Skips solidity "index-out-of-range" check. * * WARNING: Only use if you are certain `pos` is lower than the array length. */ function unsafeAccess(bytes[] storage arr, uint256 pos) internal pure returns (StorageSlot.BytesSlot storage) { bytes32 slot; assembly ("memory-safe") { slot := arr.slot } return slot.deriveArray().offset(pos).getBytesSlot(); } /** * @dev Access an array in an "unsafe" way. Skips solidity "index-out-of-range" check. * * WARNING: Only use if you are certain `pos` is lower than the array length. */ function unsafeAccess(string[] storage arr, uint256 pos) internal pure returns (StorageSlot.StringSlot storage) { bytes32 slot; assembly ("memory-safe") { slot := arr.slot } return slot.deriveArray().offset(pos).getStringSlot(); } /** * @dev Access an array in an "unsafe" way. Skips solidity "index-out-of-range" check. * * WARNING: Only use if you are certain `pos` is lower than the array length. */ function unsafeMemoryAccess(address[] memory arr, uint256 pos) internal pure returns (address res) { assembly { res := mload(add(add(arr, 0x20), mul(pos, 0x20))) } } /** * @dev Access an array in an "unsafe" way. Skips solidity "index-out-of-range" check. * * WARNING: Only use if you are certain `pos` is lower than the array length. */ function unsafeMemoryAccess(bytes32[] memory arr, uint256 pos) internal pure returns (bytes32 res) { assembly { res := mload(add(add(arr, 0x20), mul(pos, 0x20))) } } /** * @dev Access an array in an "unsafe" way. Skips solidity "index-out-of-range" check. * * WARNING: Only use if you are certain `pos` is lower than the array length. */ function unsafeMemoryAccess(uint256[] memory arr, uint256 pos) internal pure returns (uint256 res) { assembly { res := mload(add(add(arr, 0x20), mul(pos, 0x20))) } } /** * @dev Access an array in an "unsafe" way. Skips solidity "index-out-of-range" check. * * WARNING: Only use if you are certain `pos` is lower than the array length. */ function unsafeMemoryAccess(bytes[] memory arr, uint256 pos) internal pure returns (bytes memory res) { assembly { res := mload(add(add(arr, 0x20), mul(pos, 0x20))) } } /** * @dev Access an array in an "unsafe" way. Skips solidity "index-out-of-range" check. * * WARNING: Only use if you are certain `pos` is lower than the array length. */ function unsafeMemoryAccess(string[] memory arr, uint256 pos) internal pure returns (string memory res) { assembly { res := mload(add(add(arr, 0x20), mul(pos, 0x20))) } } /** * @dev Helper to set the length of a dynamic array. Directly writing to `.length` is forbidden. * * WARNING: this does not clear elements if length is reduced, of initialize elements if length is increased. */ function unsafeSetLength(address[] storage array, uint256 len) internal { assembly ("memory-safe") { sstore(array.slot, len) } } /** * @dev Helper to set the length of a dynamic array. Directly writing to `.length` is forbidden. * * WARNING: this does not clear elements if length is reduced, of initialize elements if length is increased. */ function unsafeSetLength(bytes32[] storage array, uint256 len) internal { assembly ("memory-safe") { sstore(array.slot, len) } } /** * @dev Helper to set the length of a dynamic array. Directly writing to `.length` is forbidden. * * WARNING: this does not clear elements if length is reduced, of initialize elements if length is increased. */ function unsafeSetLength(uint256[] storage array, uint256 len) internal { assembly ("memory-safe") { sstore(array.slot, len) } } /** * @dev Helper to set the length of a dynamic array. Directly writing to `.length` is forbidden. * * WARNING: this does not clear elements if length is reduced, of initialize elements if length is increased. */ function unsafeSetLength(bytes[] storage array, uint256 len) internal { assembly ("memory-safe") { sstore(array.slot, len) } } /** * @dev Helper to set the length of a dynamic array. Directly writing to `.length` is forbidden. * * WARNING: this does not clear elements if length is reduced, of initialize elements if length is increased. */ function unsafeSetLength(string[] storage array, uint256 len) internal { assembly ("memory-safe") { sstore(array.slot, len) } } }@openzeppelin/contracts/utils/Comparators.sol
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v5.1.0) (utils/Comparators.sol) pragma solidity ^0.8.20; /** * @dev Provides a set of functions to compare values. * * _Available since v5.1._ */ library Comparators { function lt(uint256 a, uint256 b) internal pure returns (bool) { return a < b; } function gt(uint256 a, uint256 b) internal pure returns (bool) { return a > b; } }@openzeppelin/contracts/utils/Context.sol
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v5.0.1) (utils/Context.sol) pragma solidity ^0.8.20; /** * @dev Provides information about the current execution context, including the * sender of the transaction and its data. While these are generally available * via msg.sender and msg.data, they should not be accessed in such a direct * manner, since when dealing with meta-transactions the account sending and * paying for execution may not be the actual sender (as far as an application * is concerned). * * This contract is only required for intermediate, library-like contracts. */ abstract contract Context { function _msgSender() internal view virtual returns (address) { return msg.sender; } function _msgData() internal view virtual returns (bytes calldata) { return msg.data; } function _contextSuffixLength() internal view virtual returns (uint256) { return 0; } }@openzeppelin/contracts/utils/Panic.sol
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v5.1.0) (utils/Panic.sol) pragma solidity ^0.8.20; /** * @dev Helper library for emitting standardized panic codes. * * ```solidity * contract Example { * using Panic for uint256; * * // Use any of the declared internal constants * function foo() { Panic.GENERIC.panic(); } * * // Alternatively * function foo() { Panic.panic(Panic.GENERIC); } * } * ``` * * Follows the list from https://github.com/ethereum/solidity/blob/v0.8.24/libsolutil/ErrorCodes.h[libsolutil]. * * _Available since v5.1._ */ // slither-disable-next-line unused-state library Panic { /// @dev generic / unspecified error uint256 internal constant GENERIC = 0x00; /// @dev used by the assert() builtin uint256 internal constant ASSERT = 0x01; /// @dev arithmetic underflow or overflow uint256 internal constant UNDER_OVERFLOW = 0x11; /// @dev division or modulo by zero uint256 internal constant DIVISION_BY_ZERO = 0x12; /// @dev enum conversion error uint256 internal constant ENUM_CONVERSION_ERROR = 0x21; /// @dev invalid encoding in storage uint256 internal constant STORAGE_ENCODING_ERROR = 0x22; /// @dev empty array pop uint256 internal constant EMPTY_ARRAY_POP = 0x31; /// @dev array out of bounds access uint256 internal constant ARRAY_OUT_OF_BOUNDS = 0x32; /// @dev resource error (too large allocation or too large array) uint256 internal constant RESOURCE_ERROR = 0x41; /// @dev calling invalid internal function uint256 internal constant INVALID_INTERNAL_FUNCTION = 0x51; /// @dev Reverts with a panic code. Recommended to use with /// the internal constants with predefined codes. function panic(uint256 code) internal pure { assembly ("memory-safe") { mstore(0x00, 0x4e487b71) mstore(0x20, code) revert(0x1c, 0x24) } } }@openzeppelin/contracts/utils/Pausable.sol
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v5.3.0) (utils/Pausable.sol) pragma solidity ^0.8.20; import {Context} from "../utils/Context.sol"; /** * @dev Contract module which allows children to implement an emergency stop * mechanism that can be triggered by an authorized account. * * This module is used through inheritance. It will make available the * modifiers `whenNotPaused` and `whenPaused`, which can be applied to * the functions of your contract. Note that they will not be pausable by * simply including this module, only once the modifiers are put in place. */ abstract contract Pausable is Context { bool private _paused; /** * @dev Emitted when the pause is triggered by `account`. */ event Paused(address account); /** * @dev Emitted when the pause is lifted by `account`. */ event Unpaused(address account); /** * @dev The operation failed because the contract is paused. */ error EnforcedPause(); /** * @dev The operation failed because the contract is not paused. */ error ExpectedPause(); /** * @dev Modifier to make a function callable only when the contract is not paused. * * Requirements: * * - The contract must not be paused. */ modifier whenNotPaused() { _requireNotPaused(); _; } /** * @dev Modifier to make a function callable only when the contract is paused. * * Requirements: * * - The contract must be paused. */ modifier whenPaused() { _requirePaused(); _; } /** * @dev Returns true if the contract is paused, and false otherwise. */ function paused() public view virtual returns (bool) { return _paused; } /** * @dev Throws if the contract is paused. */ function _requireNotPaused() internal view virtual { if (paused()) { revert EnforcedPause(); } } /** * @dev Throws if the contract is not paused. */ function _requirePaused() internal view virtual { if (!paused()) { revert ExpectedPause(); } } /** * @dev Triggers stopped state. * * Requirements: * * - The contract must not be paused. */ function _pause() internal virtual whenNotPaused { _paused = true; emit Paused(_msgSender()); } /** * @dev Returns to normal state. * * Requirements: * * - The contract must be paused. */ function _unpause() internal virtual whenPaused { _paused = false; emit Unpaused(_msgSender()); } }@openzeppelin/contracts/utils/SlotDerivation.sol
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v5.3.0) (utils/SlotDerivation.sol) // This file was procedurally generated from scripts/generate/templates/SlotDerivation.js. pragma solidity ^0.8.20; /** * @dev Library for computing storage (and transient storage) locations from namespaces and deriving slots * corresponding to standard patterns. The derivation method for array and mapping matches the storage layout used by * the solidity language / compiler. * * See https://docs.soliditylang.org/en/v0.8.20/internals/layout_in_storage.html#mappings-and-dynamic-arrays[Solidity docs for mappings and dynamic arrays.]. * * Example usage: * ```solidity * contract Example { * // Add the library methods * using StorageSlot for bytes32; * using SlotDerivation for bytes32; * * // Declare a namespace * string private constant _NAMESPACE = "<namespace>"; // eg. OpenZeppelin.Slot * * function setValueInNamespace(uint256 key, address newValue) internal { * _NAMESPACE.erc7201Slot().deriveMapping(key).getAddressSlot().value = newValue; * } * * function getValueInNamespace(uint256 key) internal view returns (address) { * return _NAMESPACE.erc7201Slot().deriveMapping(key).getAddressSlot().value; * } * } * ``` * * TIP: Consider using this library along with {StorageSlot}. * * NOTE: This library provides a way to manipulate storage locations in a non-standard way. Tooling for checking * upgrade safety will ignore the slots accessed through this library. * * _Available since v5.1._ */ library SlotDerivation { /** * @dev Derive an ERC-7201 slot from a string (namespace). */ function erc7201Slot(string memory namespace) internal pure returns (bytes32 slot) { assembly ("memory-safe") { mstore(0x00, sub(keccak256(add(namespace, 0x20), mload(namespace)), 1)) slot := and(keccak256(0x00, 0x20), not(0xff)) } } /** * @dev Add an offset to a slot to get the n-th element of a structure or an array. */ function offset(bytes32 slot, uint256 pos) internal pure returns (bytes32 result) { unchecked { return bytes32(uint256(slot) + pos); } } /** * @dev Derive the location of the first element in an array from the slot where the length is stored. */ function deriveArray(bytes32 slot) internal pure returns (bytes32 result) { assembly ("memory-safe") { mstore(0x00, slot) result := keccak256(0x00, 0x20) } } /** * @dev Derive the location of a mapping element from the key. */ function deriveMapping(bytes32 slot, address key) internal pure returns (bytes32 result) { assembly ("memory-safe") { mstore(0x00, and(key, shr(96, not(0)))) mstore(0x20, slot) result := keccak256(0x00, 0x40) } } /** * @dev Derive the location of a mapping element from the key. */ function deriveMapping(bytes32 slot, bool key) internal pure returns (bytes32 result) { assembly ("memory-safe") { mstore(0x00, iszero(iszero(key))) mstore(0x20, slot) result := keccak256(0x00, 0x40) } } /** * @dev Derive the location of a mapping element from the key. */ function deriveMapping(bytes32 slot, bytes32 key) internal pure returns (bytes32 result) { assembly ("memory-safe") { mstore(0x00, key) mstore(0x20, slot) result := keccak256(0x00, 0x40) } } /** * @dev Derive the location of a mapping element from the key. */ function deriveMapping(bytes32 slot, uint256 key) internal pure returns (bytes32 result) { assembly ("memory-safe") { mstore(0x00, key) mstore(0x20, slot) result := keccak256(0x00, 0x40) } } /** * @dev Derive the location of a mapping element from the key. */ function deriveMapping(bytes32 slot, int256 key) internal pure returns (bytes32 result) { assembly ("memory-safe") { mstore(0x00, key) mstore(0x20, slot) result := keccak256(0x00, 0x40) } } /** * @dev Derive the location of a mapping element from the key. */ function deriveMapping(bytes32 slot, string memory key) internal pure returns (bytes32 result) { assembly ("memory-safe") { let length := mload(key) let begin := add(key, 0x20) let end := add(begin, length) let cache := mload(end) mstore(end, slot) result := keccak256(begin, add(length, 0x20)) mstore(end, cache) } } /** * @dev Derive the location of a mapping element from the key. */ function deriveMapping(bytes32 slot, bytes memory key) internal pure returns (bytes32 result) { assembly ("memory-safe") { let length := mload(key) let begin := add(key, 0x20) let end := add(begin, length) let cache := mload(end) mstore(end, slot) result := keccak256(begin, add(length, 0x20)) mstore(end, cache) } } }@openzeppelin/contracts/utils/StorageSlot.sol
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v5.1.0) (utils/StorageSlot.sol) // This file was procedurally generated from scripts/generate/templates/StorageSlot.js. pragma solidity ^0.8.20; /** * @dev Library for reading and writing primitive types to specific storage slots. * * Storage slots are often used to avoid storage conflict when dealing with upgradeable contracts. * This library helps with reading and writing to such slots without the need for inline assembly. * * The functions in this library return Slot structs that contain a `value` member that can be used to read or write. * * Example usage to set ERC-1967 implementation slot: * ```solidity * contract ERC1967 { * // Define the slot. Alternatively, use the SlotDerivation library to derive the slot. * bytes32 internal constant _IMPLEMENTATION_SLOT = 0x360894a13ba1a3210667c828492db98dca3e2076cc3735a920a3ca505d382bbc; * * function _getImplementation() internal view returns (address) { * return StorageSlot.getAddressSlot(_IMPLEMENTATION_SLOT).value; * } * * function _setImplementation(address newImplementation) internal { * require(newImplementation.code.length > 0); * StorageSlot.getAddressSlot(_IMPLEMENTATION_SLOT).value = newImplementation; * } * } * ``` * * TIP: Consider using this library along with {SlotDerivation}. */ library StorageSlot { struct AddressSlot { address value; } struct BooleanSlot { bool value; } struct Bytes32Slot { bytes32 value; } struct Uint256Slot { uint256 value; } struct Int256Slot { int256 value; } struct StringSlot { string value; } struct BytesSlot { bytes value; } /** * @dev Returns an `AddressSlot` with member `value` located at `slot`. */ function getAddressSlot(bytes32 slot) internal pure returns (AddressSlot storage r) { assembly ("memory-safe") { r.slot := slot } } /** * @dev Returns a `BooleanSlot` with member `value` located at `slot`. */ function getBooleanSlot(bytes32 slot) internal pure returns (BooleanSlot storage r) { assembly ("memory-safe") { r.slot := slot } } /** * @dev Returns a `Bytes32Slot` with member `value` located at `slot`. */ function getBytes32Slot(bytes32 slot) internal pure returns (Bytes32Slot storage r) { assembly ("memory-safe") { r.slot := slot } } /** * @dev Returns a `Uint256Slot` with member `value` located at `slot`. */ function getUint256Slot(bytes32 slot) internal pure returns (Uint256Slot storage r) { assembly ("memory-safe") { r.slot := slot } } /** * @dev Returns a `Int256Slot` with member `value` located at `slot`. */ function getInt256Slot(bytes32 slot) internal pure returns (Int256Slot storage r) { assembly ("memory-safe") { r.slot := slot } } /** * @dev Returns a `StringSlot` with member `value` located at `slot`. */ function getStringSlot(bytes32 slot) internal pure returns (StringSlot storage r) { assembly ("memory-safe") { r.slot := slot } } /** * @dev Returns an `StringSlot` representation of the string storage pointer `store`. */ function getStringSlot(string storage store) internal pure returns (StringSlot storage r) { assembly ("memory-safe") { r.slot := store.slot } } /** * @dev Returns a `BytesSlot` with member `value` located at `slot`. */ function getBytesSlot(bytes32 slot) internal pure returns (BytesSlot storage r) { assembly ("memory-safe") { r.slot := slot } } /** * @dev Returns an `BytesSlot` representation of the bytes storage pointer `store`. */ function getBytesSlot(bytes storage store) internal pure returns (BytesSlot storage r) { assembly ("memory-safe") { r.slot := store.slot } } }@openzeppelin/contracts/utils/introspection/ERC165.sol
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v5.4.0) (utils/introspection/ERC165.sol) pragma solidity ^0.8.20; import {IERC165} from "./IERC165.sol"; /** * @dev Implementation of the {IERC165} interface. * * Contracts that want to implement ERC-165 should inherit from this contract and override {supportsInterface} to check * for the additional interface id that will be supported. For example: * * ```solidity * function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) { * return interfaceId == type(MyInterface).interfaceId || super.supportsInterface(interfaceId); * } * ``` */ abstract contract ERC165 is IERC165 { /// @inheritdoc IERC165 function supportsInterface(bytes4 interfaceId) public view virtual returns (bool) { return interfaceId == type(IERC165).interfaceId; } }@openzeppelin/contracts/utils/introspection/IERC165.sol
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v5.4.0) (utils/introspection/IERC165.sol) pragma solidity >=0.4.16; /** * @dev Interface of the ERC-165 standard, as defined in the * https://eips.ethereum.org/EIPS/eip-165[ERC]. * * Implementers can declare support of contract interfaces, which can then be * queried by others ({ERC165Checker}). * * For an implementation, see {ERC165}. */ interface IERC165 { /** * @dev Returns true if this contract implements the interface defined by * `interfaceId`. See the corresponding * https://eips.ethereum.org/EIPS/eip-165#how-interfaces-are-identified[ERC section] * to learn more about how these ids are created. * * This function call must use less than 30 000 gas. */ function supportsInterface(bytes4 interfaceId) external view returns (bool); }@openzeppelin/contracts/utils/math/Math.sol
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v5.3.0) (utils/math/Math.sol) pragma solidity ^0.8.20; import {Panic} from "../Panic.sol"; import {SafeCast} from "./SafeCast.sol"; /** * @dev Standard math utilities missing in the Solidity language. */ library Math { enum Rounding { Floor, // Toward negative infinity Ceil, // Toward positive infinity Trunc, // Toward zero Expand // Away from zero } /** * @dev Return the 512-bit addition of two uint256. * * The result is stored in two 256 variables such that sum = high * 2²⁵⁶ + low. */ function add512(uint256 a, uint256 b) internal pure returns (uint256 high, uint256 low) { assembly ("memory-safe") { low := add(a, b) high := lt(low, a) } } /** * @dev Return the 512-bit multiplication of two uint256. * * The result is stored in two 256 variables such that product = high * 2²⁵⁶ + low. */ function mul512(uint256 a, uint256 b) internal pure returns (uint256 high, uint256 low) { // 512-bit multiply [high low] = x * y. Compute the product mod 2²⁵⁶ and mod 2²⁵⁶ - 1, then use // the Chinese Remainder Theorem to reconstruct the 512 bit result. The result is stored in two 256 // variables such that product = high * 2²⁵⁶ + low. assembly ("memory-safe") { let mm := mulmod(a, b, not(0)) low := mul(a, b) high := sub(sub(mm, low), lt(mm, low)) } } /** * @dev Returns the addition of two unsigned integers, with a success flag (no overflow). */ function tryAdd(uint256 a, uint256 b) internal pure returns (bool success, uint256 result) { unchecked { uint256 c = a + b; success = c >= a; result = c * SafeCast.toUint(success); } } /** * @dev Returns the subtraction of two unsigned integers, with a success flag (no overflow). */ function trySub(uint256 a, uint256 b) internal pure returns (bool success, uint256 result) { unchecked { uint256 c = a - b; success = c <= a; result = c * SafeCast.toUint(success); } } /** * @dev Returns the multiplication of two unsigned integers, with a success flag (no overflow). */ function tryMul(uint256 a, uint256 b) internal pure returns (bool success, uint256 result) { unchecked { uint256 c = a * b; assembly ("memory-safe") { // Only true when the multiplication doesn't overflow // (c / a == b) || (a == 0) success := or(eq(div(c, a), b), iszero(a)) } // equivalent to: success ? c : 0 result = c * SafeCast.toUint(success); } } /** * @dev Returns the division of two unsigned integers, with a success flag (no division by zero). */ function tryDiv(uint256 a, uint256 b) internal pure returns (bool success, uint256 result) { unchecked { success = b > 0; assembly ("memory-safe") { // The `DIV` opcode returns zero when the denominator is 0. result := div(a, b) } } } /** * @dev Returns the remainder of dividing two unsigned integers, with a success flag (no division by zero). */ function tryMod(uint256 a, uint256 b) internal pure returns (bool success, uint256 result) { unchecked { success = b > 0; assembly ("memory-safe") { // The `MOD` opcode returns zero when the denominator is 0. result := mod(a, b) } } } /** * @dev Unsigned saturating addition, bounds to `2²⁵⁶ - 1` instead of overflowing. */ function saturatingAdd(uint256 a, uint256 b) internal pure returns (uint256) { (bool success, uint256 result) = tryAdd(a, b); return ternary(success, result, type(uint256).max); } /** * @dev Unsigned saturating subtraction, bounds to zero instead of overflowing. */ function saturatingSub(uint256 a, uint256 b) internal pure returns (uint256) { (, uint256 result) = trySub(a, b); return result; } /** * @dev Unsigned saturating multiplication, bounds to `2²⁵⁶ - 1` instead of overflowing. */ function saturatingMul(uint256 a, uint256 b) internal pure returns (uint256) { (bool success, uint256 result) = tryMul(a, b); return ternary(success, result, type(uint256).max); } /** * @dev Branchless ternary evaluation for `a ? b : c`. Gas costs are constant. * * IMPORTANT: This function may reduce bytecode size and consume less gas when used standalone. * However, the compiler may optimize Solidity ternary operations (i.e. `a ? b : c`) to only compute * one branch when needed, making this function more expensive. */ function ternary(bool condition, uint256 a, uint256 b) internal pure returns (uint256) { unchecked { // branchless ternary works because: // b ^ (a ^ b) == a // b ^ 0 == b return b ^ ((a ^ b) * SafeCast.toUint(condition)); } } /** * @dev Returns the largest of two numbers. */ function max(uint256 a, uint256 b) internal pure returns (uint256) { return ternary(a > b, a, b); } /** * @dev Returns the smallest of two numbers. */ function min(uint256 a, uint256 b) internal pure returns (uint256) { return ternary(a < b, a, b); } /** * @dev Returns the average of two numbers. The result is rounded towards * zero. */ function average(uint256 a, uint256 b) internal pure returns (uint256) { // (a + b) / 2 can overflow. return (a & b) + (a ^ b) / 2; } /** * @dev Returns the ceiling of the division of two numbers. * * This differs from standard division with `/` in that it rounds towards infinity instead * of rounding towards zero. */ function ceilDiv(uint256 a, uint256 b) internal pure returns (uint256) { if (b == 0) { // Guarantee the same behavior as in a regular Solidity division. Panic.panic(Panic.DIVISION_BY_ZERO); } // The following calculation ensures accurate ceiling division without overflow. // Since a is non-zero, (a - 1) / b will not overflow. // The largest possible result occurs when (a - 1) / b is type(uint256).max, // but the largest value we can obtain is type(uint256).max - 1, which happens // when a = type(uint256).max and b = 1. unchecked { return SafeCast.toUint(a > 0) * ((a - 1) / b + 1); } } /** * @dev Calculates floor(x * y / denominator) with full precision. Throws if result overflows a uint256 or * denominator == 0. * * Original credit to Remco Bloemen under MIT license (https://xn--2-umb.com/21/muldiv) with further edits by * Uniswap Labs also under MIT license. */ function mulDiv(uint256 x, uint256 y, uint256 denominator) internal pure returns (uint256 result) { unchecked { (uint256 high, uint256 low) = mul512(x, y); // Handle non-overflow cases, 256 by 256 division. if (high == 0) { // Solidity will revert if denominator == 0, unlike the div opcode on its own. // The surrounding unchecked block does not change this fact. // See https://docs.soliditylang.org/en/latest/control-structures.html#checked-or-unchecked-arithmetic. return low / denominator; } // Make sure the result is less than 2²⁵⁶. Also prevents denominator == 0. if (denominator <= high) { Panic.panic(ternary(denominator == 0, Panic.DIVISION_BY_ZERO, Panic.UNDER_OVERFLOW)); } /////////////////////////////////////////////// // 512 by 256 division. /////////////////////////////////////////////// // Make division exact by subtracting the remainder from [high low]. uint256 remainder; assembly ("memory-safe") { // Compute remainder using mulmod. remainder := mulmod(x, y, denominator) // Subtract 256 bit number from 512 bit number. high := sub(high, gt(remainder, low)) low := sub(low, remainder) } // Factor powers of two out of denominator and compute largest power of two divisor of denominator. // Always >= 1. See https://cs.stackexchange.com/q/138556/92363. uint256 twos = denominator & (0 - denominator); assembly ("memory-safe") { // Divide denominator by twos. denominator := div(denominator, twos) // Divide [high low] by twos. low := div(low, twos) // Flip twos such that it is 2²⁵⁶ / twos. If twos is zero, then it becomes one. twos := add(div(sub(0, twos), twos), 1) } // Shift in bits from high into low. low |= high * twos; // Invert denominator mod 2²⁵⁶. Now that denominator is an odd number, it has an inverse modulo 2²⁵⁶ such // that denominator * inv ≡ 1 mod 2²⁵⁶. Compute the inverse by starting with a seed that is correct for // four bits. That is, denominator * inv ≡ 1 mod 2⁴. uint256 inverse = (3 * denominator) ^ 2; // Use the Newton-Raphson iteration to improve the precision. Thanks to Hensel's lifting lemma, this also // works in modular arithmetic, doubling the correct bits in each step. inverse *= 2 - denominator * inverse; // inverse mod 2⁸ inverse *= 2 - denominator * inverse; // inverse mod 2¹⁶ inverse *= 2 - denominator * inverse; // inverse mod 2³² inverse *= 2 - denominator * inverse; // inverse mod 2⁶⁴ inverse *= 2 - denominator * inverse; // inverse mod 2¹²⁸ inverse *= 2 - denominator * inverse; // inverse mod 2²⁵⁶ // Because the division is now exact we can divide by multiplying with the modular inverse of denominator. // This will give us the correct result modulo 2²⁵⁶. Since the preconditions guarantee that the outcome is // less than 2²⁵⁶, this is the final result. We don't need to compute the high bits of the result and high // is no longer required. result = low * inverse; return result; } } /** * @dev Calculates x * y / denominator with full precision, following the selected rounding direction. */ function mulDiv(uint256 x, uint256 y, uint256 denominator, Rounding rounding) internal pure returns (uint256) { return mulDiv(x, y, denominator) + SafeCast.toUint(unsignedRoundsUp(rounding) && mulmod(x, y, denominator) > 0); } /** * @dev Calculates floor(x * y >> n) with full precision. Throws if result overflows a uint256. */ function mulShr(uint256 x, uint256 y, uint8 n) internal pure returns (uint256 result) { unchecked { (uint256 high, uint256 low) = mul512(x, y); if (high >= 1 << n) { Panic.panic(Panic.UNDER_OVERFLOW); } return (high << (256 - n)) | (low >> n); } } /** * @dev Calculates x * y >> n with full precision, following the selected rounding direction. */ function mulShr(uint256 x, uint256 y, uint8 n, Rounding rounding) internal pure returns (uint256) { return mulShr(x, y, n) + SafeCast.toUint(unsignedRoundsUp(rounding) && mulmod(x, y, 1 << n) > 0); } /** * @dev Calculate the modular multiplicative inverse of a number in Z/nZ. * * If n is a prime, then Z/nZ is a field. In that case all elements are inversible, except 0. * If n is not a prime, then Z/nZ is not a field, and some elements might not be inversible. * * If the input value is not inversible, 0 is returned. * * NOTE: If you know for sure that n is (big) a prime, it may be cheaper to use Fermat's little theorem and get the * inverse using `Math.modExp(a, n - 2, n)`. See {invModPrime}. */ function invMod(uint256 a, uint256 n) internal pure returns (uint256) { unchecked { if (n == 0) return 0; // The inverse modulo is calculated using the Extended Euclidean Algorithm (iterative version) // Used to compute integers x and y such that: ax + ny = gcd(a, n). // When the gcd is 1, then the inverse of a modulo n exists and it's x. // ax + ny = 1 // ax = 1 + (-y)n // ax ≡ 1 (mod n) # x is the inverse of a modulo n // If the remainder is 0 the gcd is n right away. uint256 remainder = a % n; uint256 gcd = n; // Therefore the initial coefficients are: // ax + ny = gcd(a, n) = n // 0a + 1n = n int256 x = 0; int256 y = 1; while (remainder != 0) { uint256 quotient = gcd / remainder; (gcd, remainder) = ( // The old remainder is the next gcd to try. remainder, // Compute the next remainder. // Can't overflow given that (a % gcd) * (gcd // (a % gcd)) <= gcd // where gcd is at most n (capped to type(uint256).max) gcd - remainder * quotient ); (x, y) = ( // Increment the coefficient of a. y, // Decrement the coefficient of n. // Can overflow, but the result is casted to uint256 so that the // next value of y is "wrapped around" to a value between 0 and n - 1. x - y * int256(quotient) ); } if (gcd != 1) return 0; // No inverse exists. return ternary(x < 0, n - uint256(-x), uint256(x)); // Wrap the result if it's negative. } } /** * @dev Variant of {invMod}. More efficient, but only works if `p` is known to be a prime greater than `2`. * * From https://en.wikipedia.org/wiki/Fermat%27s_little_theorem[Fermat's little theorem], we know that if p is * prime, then `a**(p-1) ≡ 1 mod p`. As a consequence, we have `a * a**(p-2) ≡ 1 mod p`, which means that * `a**(p-2)` is the modular multiplicative inverse of a in Fp. * * NOTE: this function does NOT check that `p` is a prime greater than `2`. */ function invModPrime(uint256 a, uint256 p) internal view returns (uint256) { unchecked { return Math.modExp(a, p - 2, p); } } /** * @dev Returns the modular exponentiation of the specified base, exponent and modulus (b ** e % m) * * Requirements: * - modulus can't be zero * - underlying staticcall to precompile must succeed * * IMPORTANT: The result is only valid if the underlying call succeeds. When using this function, make * sure the chain you're using it on supports the precompiled contract for modular exponentiation * at address 0x05 as specified in https://eips.ethereum.org/EIPS/eip-198[EIP-198]. Otherwise, * the underlying function will succeed given the lack of a revert, but the result may be incorrectly * interpreted as 0. */ function modExp(uint256 b, uint256 e, uint256 m) internal view returns (uint256) { (bool success, uint256 result) = tryModExp(b, e, m); if (!success) { Panic.panic(Panic.DIVISION_BY_ZERO); } return result; } /** * @dev Returns the modular exponentiation of the specified base, exponent and modulus (b ** e % m). * It includes a success flag indicating if the operation succeeded. Operation will be marked as failed if trying * to operate modulo 0 or if the underlying precompile reverted. * * IMPORTANT: The result is only valid if the success flag is true. When using this function, make sure the chain * you're using it on supports the precompiled contract for modular exponentiation at address 0x05 as specified in * https://eips.ethereum.org/EIPS/eip-198[EIP-198]. Otherwise, the underlying function will succeed given the lack * of a revert, but the result may be incorrectly interpreted as 0. */ function tryModExp(uint256 b, uint256 e, uint256 m) internal view returns (bool success, uint256 result) { if (m == 0) return (false, 0); assembly ("memory-safe") { let ptr := mload(0x40) // | Offset | Content | Content (Hex) | // |-----------|------------|--------------------------------------------------------------------| // | 0x00:0x1f | size of b | 0x0000000000000000000000000000000000000000000000000000000000000020 | // | 0x20:0x3f | size of e | 0x0000000000000000000000000000000000000000000000000000000000000020 | // | 0x40:0x5f | size of m | 0x0000000000000000000000000000000000000000000000000000000000000020 | // | 0x60:0x7f | value of b | 0x<.............................................................b> | // | 0x80:0x9f | value of e | 0x<.............................................................e> | // | 0xa0:0xbf | value of m | 0x<.............................................................m> | mstore(ptr, 0x20) mstore(add(ptr, 0x20), 0x20) mstore(add(ptr, 0x40), 0x20) mstore(add(ptr, 0x60), b) mstore(add(ptr, 0x80), e) mstore(add(ptr, 0xa0), m) // Given the result < m, it's guaranteed to fit in 32 bytes, // so we can use the memory scratch space located at offset 0. success := staticcall(gas(), 0x05, ptr, 0xc0, 0x00, 0x20) result := mload(0x00) } } /** * @dev Variant of {modExp} that supports inputs of arbitrary length. */ function modExp(bytes memory b, bytes memory e, bytes memory m) internal view returns (bytes memory) { (bool success, bytes memory result) = tryModExp(b, e, m); if (!success) { Panic.panic(Panic.DIVISION_BY_ZERO); } return result; } /** * @dev Variant of {tryModExp} that supports inputs of arbitrary length. */ function tryModExp( bytes memory b, bytes memory e, bytes memory m ) internal view returns (bool success, bytes memory result) { if (_zeroBytes(m)) return (false, new bytes(0)); uint256 mLen = m.length; // Encode call args in result and move the free memory pointer result = abi.encodePacked(b.length, e.length, mLen, b, e, m); assembly ("memory-safe") { let dataPtr := add(result, 0x20) // Write result on top of args to avoid allocating extra memory. success := staticcall(gas(), 0x05, dataPtr, mload(result), dataPtr, mLen) // Overwrite the length. // result.length > returndatasize() is guaranteed because returndatasize() == m.length mstore(result, mLen) // Set the memory pointer after the returned data. mstore(0x40, add(dataPtr, mLen)) } } /** * @dev Returns whether the provided byte array is zero. */ function _zeroBytes(bytes memory byteArray) private pure returns (bool) { for (uint256 i = 0; i < byteArray.length; ++i) { if (byteArray[i] != 0) { return false; } } return true; } /** * @dev Returns the square root of a number. If the number is not a perfect square, the value is rounded * towards zero. * * This method is based on Newton's method for computing square roots; the algorithm is restricted to only * using integer operations. */ function sqrt(uint256 a) internal pure returns (uint256) { unchecked { // Take care of easy edge cases when a == 0 or a == 1 if (a <= 1) { return a; } // In this function, we use Newton's method to get a root of `f(x) := x² - a`. It involves building a // sequence x_n that converges toward sqrt(a). For each iteration x_n, we also define the error between // the current value as `ε_n = | x_n - sqrt(a) |`. // // For our first estimation, we consider `e` the smallest power of 2 which is bigger than the square root // of the target. (i.e. `2**(e-1) ≤ sqrt(a) < 2**e`). We know that `e ≤ 128` because `(2¹²⁸)² = 2²⁵⁶` is // bigger than any uint256. // // By noticing that // `2**(e-1) ≤ sqrt(a) < 2**e → (2**(e-1))² ≤ a < (2**e)² → 2**(2*e-2) ≤ a < 2**(2*e)` // we can deduce that `e - 1` is `log2(a) / 2`. We can thus compute `x_n = 2**(e-1)` using a method similar // to the msb function. uint256 aa = a; uint256 xn = 1; if (aa >= (1 << 128)) { aa >>= 128; xn <<= 64; } if (aa >= (1 << 64)) { aa >>= 64; xn <<= 32; } if (aa >= (1 << 32)) { aa >>= 32; xn <<= 16; } if (aa >= (1 << 16)) { aa >>= 16; xn <<= 8; } if (aa >= (1 << 8)) { aa >>= 8; xn <<= 4; } if (aa >= (1 << 4)) { aa >>= 4; xn <<= 2; } if (aa >= (1 << 2)) { xn <<= 1; } // We now have x_n such that `x_n = 2**(e-1) ≤ sqrt(a) < 2**e = 2 * x_n`. This implies ε_n ≤ 2**(e-1). // // We can refine our estimation by noticing that the middle of that interval minimizes the error. // If we move x_n to equal 2**(e-1) + 2**(e-2), then we reduce the error to ε_n ≤ 2**(e-2). // This is going to be our x_0 (and ε_0) xn = (3 * xn) >> 1; // ε_0 := | x_0 - sqrt(a) | ≤ 2**(e-2) // From here, Newton's method give us: // x_{n+1} = (x_n + a / x_n) / 2 // // One should note that: // x_{n+1}² - a = ((x_n + a / x_n) / 2)² - a // = ((x_n² + a) / (2 * x_n))² - a // = (x_n⁴ + 2 * a * x_n² + a²) / (4 * x_n²) - a // = (x_n⁴ + 2 * a * x_n² + a² - 4 * a * x_n²) / (4 * x_n²) // = (x_n⁴ - 2 * a * x_n² + a²) / (4 * x_n²) // = (x_n² - a)² / (2 * x_n)² // = ((x_n² - a) / (2 * x_n))² // ≥ 0 // Which proves that for all n ≥ 1, sqrt(a) ≤ x_n // // This gives us the proof of quadratic convergence of the sequence: // ε_{n+1} = | x_{n+1} - sqrt(a) | // = | (x_n + a / x_n) / 2 - sqrt(a) | // = | (x_n² + a - 2*x_n*sqrt(a)) / (2 * x_n) | // = | (x_n - sqrt(a))² / (2 * x_n) | // = | ε_n² / (2 * x_n) | // = ε_n² / | (2 * x_n) | // // For the first iteration, we have a special case where x_0 is known: // ε_1 = ε_0² / | (2 * x_0) | // ≤ (2**(e-2))² / (2 * (2**(e-1) + 2**(e-2))) // ≤ 2**(2*e-4) / (3 * 2**(e-1)) // ≤ 2**(e-3) / 3 // ≤ 2**(e-3-log2(3)) // ≤ 2**(e-4.5) // // For the following iterations, we use the fact that, 2**(e-1) ≤ sqrt(a) ≤ x_n: // ε_{n+1} = ε_n² / | (2 * x_n) | // ≤ (2**(e-k))² / (2 * 2**(e-1)) // ≤ 2**(2*e-2*k) / 2**e // ≤ 2**(e-2*k) xn = (xn + a / xn) >> 1; // ε_1 := | x_1 - sqrt(a) | ≤ 2**(e-4.5) -- special case, see above xn = (xn + a / xn) >> 1; // ε_2 := | x_2 - sqrt(a) | ≤ 2**(e-9) -- general case with k = 4.5 xn = (xn + a / xn) >> 1; // ε_3 := | x_3 - sqrt(a) | ≤ 2**(e-18) -- general case with k = 9 xn = (xn + a / xn) >> 1; // ε_4 := | x_4 - sqrt(a) | ≤ 2**(e-36) -- general case with k = 18 xn = (xn + a / xn) >> 1; // ε_5 := | x_5 - sqrt(a) | ≤ 2**(e-72) -- general case with k = 36 xn = (xn + a / xn) >> 1; // ε_6 := | x_6 - sqrt(a) | ≤ 2**(e-144) -- general case with k = 72 // Because e ≤ 128 (as discussed during the first estimation phase), we know have reached a precision // ε_6 ≤ 2**(e-144) < 1. Given we're operating on integers, then we can ensure that xn is now either // sqrt(a) or sqrt(a) + 1. return xn - SafeCast.toUint(xn > a / xn); } } /** * @dev Calculates sqrt(a), following the selected rounding direction. */ function sqrt(uint256 a, Rounding rounding) internal pure returns (uint256) { unchecked { uint256 result = sqrt(a); return result + SafeCast.toUint(unsignedRoundsUp(rounding) && result * result < a); } } /** * @dev Return the log in base 2 of a positive value rounded towards zero. * Returns 0 if given 0. */ function log2(uint256 x) internal pure returns (uint256 r) { // If value has upper 128 bits set, log2 result is at least 128 r = SafeCast.toUint(x > 0xffffffffffffffffffffffffffffffff) << 7; // If upper 64 bits of 128-bit half set, add 64 to result r |= SafeCast.toUint((x >> r) > 0xffffffffffffffff) << 6; // If upper 32 bits of 64-bit half set, add 32 to result r |= SafeCast.toUint((x >> r) > 0xffffffff) << 5; // If upper 16 bits of 32-bit half set, add 16 to result r |= SafeCast.toUint((x >> r) > 0xffff) << 4; // If upper 8 bits of 16-bit half set, add 8 to result r |= SafeCast.toUint((x >> r) > 0xff) << 3; // If upper 4 bits of 8-bit half set, add 4 to result r |= SafeCast.toUint((x >> r) > 0xf) << 2; // Shifts value right by the current result and use it as an index into this lookup table: // // | x (4 bits) | index | table[index] = MSB position | // |------------|---------|-----------------------------| // | 0000 | 0 | table[0] = 0 | // | 0001 | 1 | table[1] = 0 | // | 0010 | 2 | table[2] = 1 | // | 0011 | 3 | table[3] = 1 | // | 0100 | 4 | table[4] = 2 | // | 0101 | 5 | table[5] = 2 | // | 0110 | 6 | table[6] = 2 | // | 0111 | 7 | table[7] = 2 | // | 1000 | 8 | table[8] = 3 | // | 1001 | 9 | table[9] = 3 | // | 1010 | 10 | table[10] = 3 | // | 1011 | 11 | table[11] = 3 | // | 1100 | 12 | table[12] = 3 | // | 1101 | 13 | table[13] = 3 | // | 1110 | 14 | table[14] = 3 | // | 1111 | 15 | table[15] = 3 | // // The lookup table is represented as a 32-byte value with the MSB positions for 0-15 in the last 16 bytes. assembly ("memory-safe") { r := or(r, byte(shr(r, x), 0x0000010102020202030303030303030300000000000000000000000000000000)) } } /** * @dev Return the log in base 2, following the selected rounding direction, of a positive value. * Returns 0 if given 0. */ function log2(uint256 value, Rounding rounding) internal pure returns (uint256) { unchecked { uint256 result = log2(value); return result + SafeCast.toUint(unsignedRoundsUp(rounding) && 1 << result < value); } } /** * @dev Return the log in base 10 of a positive value rounded towards zero. * Returns 0 if given 0. */ function log10(uint256 value) internal pure returns (uint256) { uint256 result = 0; unchecked { if (value >= 10 ** 64) { value /= 10 ** 64; result += 64; } if (value >= 10 ** 32) { value /= 10 ** 32; result += 32; } if (value >= 10 ** 16) { value /= 10 ** 16; result += 16; } if (value >= 10 ** 8) { value /= 10 ** 8; result += 8; } if (value >= 10 ** 4) { value /= 10 ** 4; result += 4; } if (value >= 10 ** 2) { value /= 10 ** 2; result += 2; } if (value >= 10 ** 1) { result += 1; } } return result; } /** * @dev Return the log in base 10, following the selected rounding direction, of a positive value. * Returns 0 if given 0. */ function log10(uint256 value, Rounding rounding) internal pure returns (uint256) { unchecked { uint256 result = log10(value); return result + SafeCast.toUint(unsignedRoundsUp(rounding) && 10 ** result < value); } } /** * @dev Return the log in base 256 of a positive value rounded towards zero. * Returns 0 if given 0. * * Adding one to the result gives the number of pairs of hex symbols needed to represent `value` as a hex string. */ function log256(uint256 x) internal pure returns (uint256 r) { // If value has upper 128 bits set, log2 result is at least 128 r = SafeCast.toUint(x > 0xffffffffffffffffffffffffffffffff) << 7; // If upper 64 bits of 128-bit half set, add 64 to result r |= SafeCast.toUint((x >> r) > 0xffffffffffffffff) << 6; // If upper 32 bits of 64-bit half set, add 32 to result r |= SafeCast.toUint((x >> r) > 0xffffffff) << 5; // If upper 16 bits of 32-bit half set, add 16 to result r |= SafeCast.toUint((x >> r) > 0xffff) << 4; // Add 1 if upper 8 bits of 16-bit half set, and divide accumulated result by 8 return (r >> 3) | SafeCast.toUint((x >> r) > 0xff); } /** * @dev Return the log in base 256, following the selected rounding direction, of a positive value. * Returns 0 if given 0. */ function log256(uint256 value, Rounding rounding) internal pure returns (uint256) { unchecked { uint256 result = log256(value); return result + SafeCast.toUint(unsignedRoundsUp(rounding) && 1 << (result << 3) < value); } } /** * @dev Returns whether a provided rounding mode is considered rounding up for unsigned integers. */ function unsignedRoundsUp(Rounding rounding) internal pure returns (bool) { return uint8(rounding) % 2 == 1; } }@openzeppelin/contracts/utils/math/SafeCast.sol
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v5.1.0) (utils/math/SafeCast.sol) // This file was procedurally generated from scripts/generate/templates/SafeCast.js. pragma solidity ^0.8.20; /** * @dev Wrappers over Solidity's uintXX/intXX/bool casting operators with added overflow * checks. * * Downcasting from uint256/int256 in Solidity does not revert on overflow. This can * easily result in undesired exploitation or bugs, since developers usually * assume that overflows raise errors. `SafeCast` restores this intuition by * reverting the transaction when such an operation overflows. * * Using this library instead of the unchecked operations eliminates an entire * class of bugs, so it's recommended to use it always. */ library SafeCast { /** * @dev Value doesn't fit in an uint of `bits` size. */ error SafeCastOverflowedUintDowncast(uint8 bits, uint256 value); /** * @dev An int value doesn't fit in an uint of `bits` size. */ error SafeCastOverflowedIntToUint(int256 value); /** * @dev Value doesn't fit in an int of `bits` size. */ error SafeCastOverflowedIntDowncast(uint8 bits, int256 value); /** * @dev An uint value doesn't fit in an int of `bits` size. */ error SafeCastOverflowedUintToInt(uint256 value); /** * @dev Returns the downcasted uint248 from uint256, reverting on * overflow (when the input is greater than largest uint248). * * Counterpart to Solidity's `uint248` operator. * * Requirements: * * - input must fit into 248 bits */ function toUint248(uint256 value) internal pure returns (uint248) { if (value > type(uint248).max) { revert SafeCastOverflowedUintDowncast(248, value); } return uint248(value); } /** * @dev Returns the downcasted uint240 from uint256, reverting on * overflow (when the input is greater than largest uint240). * * Counterpart to Solidity's `uint240` operator. * * Requirements: * * - input must fit into 240 bits */ function toUint240(uint256 value) internal pure returns (uint240) { if (value > type(uint240).max) { revert SafeCastOverflowedUintDowncast(240, value); } return uint240(value); } /** * @dev Returns the downcasted uint232 from uint256, reverting on * overflow (when the input is greater than largest uint232). * * Counterpart to Solidity's `uint232` operator. * * Requirements: * * - input must fit into 232 bits */ function toUint232(uint256 value) internal pure returns (uint232) { if (value > type(uint232).max) { revert SafeCastOverflowedUintDowncast(232, value); } return uint232(value); } /** * @dev Returns the downcasted uint224 from uint256, reverting on * overflow (when the input is greater than largest uint224). * * Counterpart to Solidity's `uint224` operator. * * Requirements: * * - input must fit into 224 bits */ function toUint224(uint256 value) internal pure returns (uint224) { if (value > type(uint224).max) { revert SafeCastOverflowedUintDowncast(224, value); } return uint224(value); } /** * @dev Returns the downcasted uint216 from uint256, reverting on * overflow (when the input is greater than largest uint216). * * Counterpart to Solidity's `uint216` operator. * * Requirements: * * - input must fit into 216 bits */ function toUint216(uint256 value) internal pure returns (uint216) { if (value > type(uint216).max) { revert SafeCastOverflowedUintDowncast(216, value); } return uint216(value); } /** * @dev Returns the downcasted uint208 from uint256, reverting on * overflow (when the input is greater than largest uint208). * * Counterpart to Solidity's `uint208` operator. * * Requirements: * * - input must fit into 208 bits */ function toUint208(uint256 value) internal pure returns (uint208) { if (value > type(uint208).max) { revert SafeCastOverflowedUintDowncast(208, value); } return uint208(value); } /** * @dev Returns the downcasted uint200 from uint256, reverting on * overflow (when the input is greater than largest uint200). * * Counterpart to Solidity's `uint200` operator. * * Requirements: * * - input must fit into 200 bits */ function toUint200(uint256 value) internal pure returns (uint200) { if (value > type(uint200).max) { revert SafeCastOverflowedUintDowncast(200, value); } return uint200(value); } /** * @dev Returns the downcasted uint192 from uint256, reverting on * overflow (when the input is greater than largest uint192). * * Counterpart to Solidity's `uint192` operator. * * Requirements: * * - input must fit into 192 bits */ function toUint192(uint256 value) internal pure returns (uint192) { if (value > type(uint192).max) { revert SafeCastOverflowedUintDowncast(192, value); } return uint192(value); } /** * @dev Returns the downcasted uint184 from uint256, reverting on * overflow (when the input is greater than largest uint184). * * Counterpart to Solidity's `uint184` operator. * * Requirements: * * - input must fit into 184 bits */ function toUint184(uint256 value) internal pure returns (uint184) { if (value > type(uint184).max) { revert SafeCastOverflowedUintDowncast(184, value); } return uint184(value); } /** * @dev Returns the downcasted uint176 from uint256, reverting on * overflow (when the input is greater than largest uint176). * * Counterpart to Solidity's `uint176` operator. * * Requirements: * * - input must fit into 176 bits */ function toUint176(uint256 value) internal pure returns (uint176) { if (value > type(uint176).max) { revert SafeCastOverflowedUintDowncast(176, value); } return uint176(value); } /** * @dev Returns the downcasted uint168 from uint256, reverting on * overflow (when the input is greater than largest uint168). * * Counterpart to Solidity's `uint168` operator. * * Requirements: * * - input must fit into 168 bits */ function toUint168(uint256 value) internal pure returns (uint168) { if (value > type(uint168).max) { revert SafeCastOverflowedUintDowncast(168, value); } return uint168(value); } /** * @dev Returns the downcasted uint160 from uint256, reverting on * overflow (when the input is greater than largest uint160). * * Counterpart to Solidity's `uint160` operator. * * Requirements: * * - input must fit into 160 bits */ function toUint160(uint256 value) internal pure returns (uint160) { if (value > type(uint160).max) { revert SafeCastOverflowedUintDowncast(160, value); } return uint160(value); } /** * @dev Returns the downcasted uint152 from uint256, reverting on * overflow (when the input is greater than largest uint152). * * Counterpart to Solidity's `uint152` operator. * * Requirements: * * - input must fit into 152 bits */ function toUint152(uint256 value) internal pure returns (uint152) { if (value > type(uint152).max) { revert SafeCastOverflowedUintDowncast(152, value); } return uint152(value); } /** * @dev Returns the downcasted uint144 from uint256, reverting on * overflow (when the input is greater than largest uint144). * * Counterpart to Solidity's `uint144` operator. * * Requirements: * * - input must fit into 144 bits */ function toUint144(uint256 value) internal pure returns (uint144) { if (value > type(uint144).max) { revert SafeCastOverflowedUintDowncast(144, value); } return uint144(value); } /** * @dev Returns the downcasted uint136 from uint256, reverting on * overflow (when the input is greater than largest uint136). * * Counterpart to Solidity's `uint136` operator. * * Requirements: * * - input must fit into 136 bits */ function toUint136(uint256 value) internal pure returns (uint136) { if (value > type(uint136).max) { revert SafeCastOverflowedUintDowncast(136, value); } return uint136(value); } /** * @dev Returns the downcasted uint128 from uint256, reverting on * overflow (when the input is greater than largest uint128). * * Counterpart to Solidity's `uint128` operator. * * Requirements: * * - input must fit into 128 bits */ function toUint128(uint256 value) internal pure returns (uint128) { if (value > type(uint128).max) { revert SafeCastOverflowedUintDowncast(128, value); } return uint128(value); } /** * @dev Returns the downcasted uint120 from uint256, reverting on * overflow (when the input is greater than largest uint120). * * Counterpart to Solidity's `uint120` operator. * * Requirements: * * - input must fit into 120 bits */ function toUint120(uint256 value) internal pure returns (uint120) { if (value > type(uint120).max) { revert SafeCastOverflowedUintDowncast(120, value); } return uint120(value); } /** * @dev Returns the downcasted uint112 from uint256, reverting on * overflow (when the input is greater than largest uint112). * * Counterpart to Solidity's `uint112` operator. * * Requirements: * * - input must fit into 112 bits */ function toUint112(uint256 value) internal pure returns (uint112) { if (value > type(uint112).max) { revert SafeCastOverflowedUintDowncast(112, value); } return uint112(value); } /** * @dev Returns the downcasted uint104 from uint256, reverting on * overflow (when the input is greater than largest uint104). * * Counterpart to Solidity's `uint104` operator. * * Requirements: * * - input must fit into 104 bits */ function toUint104(uint256 value) internal pure returns (uint104) { if (value > type(uint104).max) { revert SafeCastOverflowedUintDowncast(104, value); } return uint104(value); } /** * @dev Returns the downcasted uint96 from uint256, reverting on * overflow (when the input is greater than largest uint96). * * Counterpart to Solidity's `uint96` operator. * * Requirements: * * - input must fit into 96 bits */ function toUint96(uint256 value) internal pure returns (uint96) { if (value > type(uint96).max) { revert SafeCastOverflowedUintDowncast(96, value); } return uint96(value); } /** * @dev Returns the downcasted uint88 from uint256, reverting on * overflow (when the input is greater than largest uint88). * * Counterpart to Solidity's `uint88` operator. * * Requirements: * * - input must fit into 88 bits */ function toUint88(uint256 value) internal pure returns (uint88) { if (value > type(uint88).max) { revert SafeCastOverflowedUintDowncast(88, value); } return uint88(value); } /** * @dev Returns the downcasted uint80 from uint256, reverting on * overflow (when the input is greater than largest uint80). * * Counterpart to Solidity's `uint80` operator. * * Requirements: * * - input must fit into 80 bits */ function toUint80(uint256 value) internal pure returns (uint80) { if (value > type(uint80).max) { revert SafeCastOverflowedUintDowncast(80, value); } return uint80(value); } /** * @dev Returns the downcasted uint72 from uint256, reverting on * overflow (when the input is greater than largest uint72). * * Counterpart to Solidity's `uint72` operator. * * Requirements: * * - input must fit into 72 bits */ function toUint72(uint256 value) internal pure returns (uint72) { if (value > type(uint72).max) { revert SafeCastOverflowedUintDowncast(72, value); } return uint72(value); } /** * @dev Returns the downcasted uint64 from uint256, reverting on * overflow (when the input is greater than largest uint64). * * Counterpart to Solidity's `uint64` operator. * * Requirements: * * - input must fit into 64 bits */ function toUint64(uint256 value) internal pure returns (uint64) { if (value > type(uint64).max) { revert SafeCastOverflowedUintDowncast(64, value); } return uint64(value); } /** * @dev Returns the downcasted uint56 from uint256, reverting on * overflow (when the input is greater than largest uint56). * * Counterpart to Solidity's `uint56` operator. * * Requirements: * * - input must fit into 56 bits */ function toUint56(uint256 value) internal pure returns (uint56) { if (value > type(uint56).max) { revert SafeCastOverflowedUintDowncast(56, value); } return uint56(value); } /** * @dev Returns the downcasted uint48 from uint256, reverting on * overflow (when the input is greater than largest uint48). * * Counterpart to Solidity's `uint48` operator. * * Requirements: * * - input must fit into 48 bits */ function toUint48(uint256 value) internal pure returns (uint48) { if (value > type(uint48).max) { revert SafeCastOverflowedUintDowncast(48, value); } return uint48(value); } /** * @dev Returns the downcasted uint40 from uint256, reverting on * overflow (when the input is greater than largest uint40). * * Counterpart to Solidity's `uint40` operator. * * Requirements: * * - input must fit into 40 bits */ function toUint40(uint256 value) internal pure returns (uint40) { if (value > type(uint40).max) { revert SafeCastOverflowedUintDowncast(40, value); } return uint40(value); } /** * @dev Returns the downcasted uint32 from uint256, reverting on * overflow (when the input is greater than largest uint32). * * Counterpart to Solidity's `uint32` operator. * * Requirements: * * - input must fit into 32 bits */ function toUint32(uint256 value) internal pure returns (uint32) { if (value > type(uint32).max) { revert SafeCastOverflowedUintDowncast(32, value); } return uint32(value); } /** * @dev Returns the downcasted uint24 from uint256, reverting on * overflow (when the input is greater than largest uint24). * * Counterpart to Solidity's `uint24` operator. * * Requirements: * * - input must fit into 24 bits */ function toUint24(uint256 value) internal pure returns (uint24) { if (value > type(uint24).max) { revert SafeCastOverflowedUintDowncast(24, value); } return uint24(value); } /** * @dev Returns the downcasted uint16 from uint256, reverting on * overflow (when the input is greater than largest uint16). * * Counterpart to Solidity's `uint16` operator. * * Requirements: * * - input must fit into 16 bits */ function toUint16(uint256 value) internal pure returns (uint16) { if (value > type(uint16).max) { revert SafeCastOverflowedUintDowncast(16, value); } return uint16(value); } /** * @dev Returns the downcasted uint8 from uint256, reverting on * overflow (when the input is greater than largest uint8). * * Counterpart to Solidity's `uint8` operator. * * Requirements: * * - input must fit into 8 bits */ function toUint8(uint256 value) internal pure returns (uint8) { if (value > type(uint8).max) { revert SafeCastOverflowedUintDowncast(8, value); } return uint8(value); } /** * @dev Converts a signed int256 into an unsigned uint256. * * Requirements: * * - input must be greater than or equal to 0. */ function toUint256(int256 value) internal pure returns (uint256) { if (value < 0) { revert SafeCastOverflowedIntToUint(value); } return uint256(value); } /** * @dev Returns the downcasted int248 from int256, reverting on * overflow (when the input is less than smallest int248 or * greater than largest int248). * * Counterpart to Solidity's `int248` operator. * * Requirements: * * - input must fit into 248 bits */ function toInt248(int256 value) internal pure returns (int248 downcasted) { downcasted = int248(value); if (downcasted != value) { revert SafeCastOverflowedIntDowncast(248, value); } } /** * @dev Returns the downcasted int240 from int256, reverting on * overflow (when the input is less than smallest int240 or * greater than largest int240). * * Counterpart to Solidity's `int240` operator. * * Requirements: * * - input must fit into 240 bits */ function toInt240(int256 value) internal pure returns (int240 downcasted) { downcasted = int240(value); if (downcasted != value) { revert SafeCastOverflowedIntDowncast(240, value); } } /** * @dev Returns the downcasted int232 from int256, reverting on * overflow (when the input is less than smallest int232 or * greater than largest int232). * * Counterpart to Solidity's `int232` operator. * * Requirements: * * - input must fit into 232 bits */ function toInt232(int256 value) internal pure returns (int232 downcasted) { downcasted = int232(value); if (downcasted != value) { revert SafeCastOverflowedIntDowncast(232, value); } } /** * @dev Returns the downcasted int224 from int256, reverting on * overflow (when the input is less than smallest int224 or * greater than largest int224). * * Counterpart to Solidity's `int224` operator. * * Requirements: * * - input must fit into 224 bits */ function toInt224(int256 value) internal pure returns (int224 downcasted) { downcasted = int224(value); if (downcasted != value) { revert SafeCastOverflowedIntDowncast(224, value); } } /** * @dev Returns the downcasted int216 from int256, reverting on * overflow (when the input is less than smallest int216 or * greater than largest int216). * * Counterpart to Solidity's `int216` operator. * * Requirements: * * - input must fit into 216 bits */ function toInt216(int256 value) internal pure returns (int216 downcasted) { downcasted = int216(value); if (downcasted != value) { revert SafeCastOverflowedIntDowncast(216, value); } } /** * @dev Returns the downcasted int208 from int256, reverting on * overflow (when the input is less than smallest int208 or * greater than largest int208). * * Counterpart to Solidity's `int208` operator. * * Requirements: * * - input must fit into 208 bits */ function toInt208(int256 value) internal pure returns (int208 downcasted) { downcasted = int208(value); if (downcasted != value) { revert SafeCastOverflowedIntDowncast(208, value); } } /** * @dev Returns the downcasted int200 from int256, reverting on * overflow (when the input is less than smallest int200 or * greater than largest int200). * * Counterpart to Solidity's `int200` operator. * * Requirements: * * - input must fit into 200 bits */ function toInt200(int256 value) internal pure returns (int200 downcasted) { downcasted = int200(value); if (downcasted != value) { revert SafeCastOverflowedIntDowncast(200, value); } } /** * @dev Returns the downcasted int192 from int256, reverting on * overflow (when the input is less than smallest int192 or * greater than largest int192). * * Counterpart to Solidity's `int192` operator. * * Requirements: * * - input must fit into 192 bits */ function toInt192(int256 value) internal pure returns (int192 downcasted) { downcasted = int192(value); if (downcasted != value) { revert SafeCastOverflowedIntDowncast(192, value); } } /** * @dev Returns the downcasted int184 from int256, reverting on * overflow (when the input is less than smallest int184 or * greater than largest int184). * * Counterpart to Solidity's `int184` operator. * * Requirements: * * - input must fit into 184 bits */ function toInt184(int256 value) internal pure returns (int184 downcasted) { downcasted = int184(value); if (downcasted != value) { revert SafeCastOverflowedIntDowncast(184, value); } } /** * @dev Returns the downcasted int176 from int256, reverting on * overflow (when the input is less than smallest int176 or * greater than largest int176). * * Counterpart to Solidity's `int176` operator. * * Requirements: * * - input must fit into 176 bits */ function toInt176(int256 value) internal pure returns (int176 downcasted) { downcasted = int176(value); if (downcasted != value) { revert SafeCastOverflowedIntDowncast(176, value); } } /** * @dev Returns the downcasted int168 from int256, reverting on * overflow (when the input is less than smallest int168 or * greater than largest int168). * * Counterpart to Solidity's `int168` operator. * * Requirements: * * - input must fit into 168 bits */ function toInt168(int256 value) internal pure returns (int168 downcasted) { downcasted = int168(value); if (downcasted != value) { revert SafeCastOverflowedIntDowncast(168, value); } } /** * @dev Returns the downcasted int160 from int256, reverting on * overflow (when the input is less than smallest int160 or * greater than largest int160). * * Counterpart to Solidity's `int160` operator. * * Requirements: * * - input must fit into 160 bits */ function toInt160(int256 value) internal pure returns (int160 downcasted) { downcasted = int160(value); if (downcasted != value) { revert SafeCastOverflowedIntDowncast(160, value); } } /** * @dev Returns the downcasted int152 from int256, reverting on * overflow (when the input is less than smallest int152 or * greater than largest int152). * * Counterpart to Solidity's `int152` operator. * * Requirements: * * - input must fit into 152 bits */ function toInt152(int256 value) internal pure returns (int152 downcasted) { downcasted = int152(value); if (downcasted != value) { revert SafeCastOverflowedIntDowncast(152, value); } } /** * @dev Returns the downcasted int144 from int256, reverting on * overflow (when the input is less than smallest int144 or * greater than largest int144). * * Counterpart to Solidity's `int144` operator. * * Requirements: * * - input must fit into 144 bits */ function toInt144(int256 value) internal pure returns (int144 downcasted) { downcasted = int144(value); if (downcasted != value) { revert SafeCastOverflowedIntDowncast(144, value); } } /** * @dev Returns the downcasted int136 from int256, reverting on * overflow (when the input is less than smallest int136 or * greater than largest int136). * * Counterpart to Solidity's `int136` operator. * * Requirements: * * - input must fit into 136 bits */ function toInt136(int256 value) internal pure returns (int136 downcasted) { downcasted = int136(value); if (downcasted != value) { revert SafeCastOverflowedIntDowncast(136, value); } } /** * @dev Returns the downcasted int128 from int256, reverting on * overflow (when the input is less than smallest int128 or * greater than largest int128). * * Counterpart to Solidity's `int128` operator. * * Requirements: * * - input must fit into 128 bits */ function toInt128(int256 value) internal pure returns (int128 downcasted) { downcasted = int128(value); if (downcasted != value) { revert SafeCastOverflowedIntDowncast(128, value); } } /** * @dev Returns the downcasted int120 from int256, reverting on * overflow (when the input is less than smallest int120 or * greater than largest int120). * * Counterpart to Solidity's `int120` operator. * * Requirements: * * - input must fit into 120 bits */ function toInt120(int256 value) internal pure returns (int120 downcasted) { downcasted = int120(value); if (downcasted != value) { revert SafeCastOverflowedIntDowncast(120, value); } } /** * @dev Returns the downcasted int112 from int256, reverting on * overflow (when the input is less than smallest int112 or * greater than largest int112). * * Counterpart to Solidity's `int112` operator. * * Requirements: * * - input must fit into 112 bits */ function toInt112(int256 value) internal pure returns (int112 downcasted) { downcasted = int112(value); if (downcasted != value) { revert SafeCastOverflowedIntDowncast(112, value); } } /** * @dev Returns the downcasted int104 from int256, reverting on * overflow (when the input is less than smallest int104 or * greater than largest int104). * * Counterpart to Solidity's `int104` operator. * * Requirements: * * - input must fit into 104 bits */ function toInt104(int256 value) internal pure returns (int104 downcasted) { downcasted = int104(value); if (downcasted != value) { revert SafeCastOverflowedIntDowncast(104, value); } } /** * @dev Returns the downcasted int96 from int256, reverting on * overflow (when the input is less than smallest int96 or * greater than largest int96). * * Counterpart to Solidity's `int96` operator. * * Requirements: * * - input must fit into 96 bits */ function toInt96(int256 value) internal pure returns (int96 downcasted) { downcasted = int96(value); if (downcasted != value) { revert SafeCastOverflowedIntDowncast(96, value); } } /** * @dev Returns the downcasted int88 from int256, reverting on * overflow (when the input is less than smallest int88 or * greater than largest int88). * * Counterpart to Solidity's `int88` operator. * * Requirements: * * - input must fit into 88 bits */ function toInt88(int256 value) internal pure returns (int88 downcasted) { downcasted = int88(value); if (downcasted != value) { revert SafeCastOverflowedIntDowncast(88, value); } } /** * @dev Returns the downcasted int80 from int256, reverting on * overflow (when the input is less than smallest int80 or * greater than largest int80). * * Counterpart to Solidity's `int80` operator. * * Requirements: * * - input must fit into 80 bits */ function toInt80(int256 value) internal pure returns (int80 downcasted) { downcasted = int80(value); if (downcasted != value) { revert SafeCastOverflowedIntDowncast(80, value); } } /** * @dev Returns the downcasted int72 from int256, reverting on * overflow (when the input is less than smallest int72 or * greater than largest int72). * * Counterpart to Solidity's `int72` operator. * * Requirements: * * - input must fit into 72 bits */ function toInt72(int256 value) internal pure returns (int72 downcasted) { downcasted = int72(value); if (downcasted != value) { revert SafeCastOverflowedIntDowncast(72, value); } } /** * @dev Returns the downcasted int64 from int256, reverting on * overflow (when the input is less than smallest int64 or * greater than largest int64). * * Counterpart to Solidity's `int64` operator. * * Requirements: * * - input must fit into 64 bits */ function toInt64(int256 value) internal pure returns (int64 downcasted) { downcasted = int64(value); if (downcasted != value) { revert SafeCastOverflowedIntDowncast(64, value); } } /** * @dev Returns the downcasted int56 from int256, reverting on * overflow (when the input is less than smallest int56 or * greater than largest int56). * * Counterpart to Solidity's `int56` operator. * * Requirements: * * - input must fit into 56 bits */ function toInt56(int256 value) internal pure returns (int56 downcasted) { downcasted = int56(value); if (downcasted != value) { revert SafeCastOverflowedIntDowncast(56, value); } } /** * @dev Returns the downcasted int48 from int256, reverting on * overflow (when the input is less than smallest int48 or * greater than largest int48). * * Counterpart to Solidity's `int48` operator. * * Requirements: * * - input must fit into 48 bits */ function toInt48(int256 value) internal pure returns (int48 downcasted) { downcasted = int48(value); if (downcasted != value) { revert SafeCastOverflowedIntDowncast(48, value); } } /** * @dev Returns the downcasted int40 from int256, reverting on * overflow (when the input is less than smallest int40 or * greater than largest int40). * * Counterpart to Solidity's `int40` operator. * * Requirements: * * - input must fit into 40 bits */ function toInt40(int256 value) internal pure returns (int40 downcasted) { downcasted = int40(value); if (downcasted != value) { revert SafeCastOverflowedIntDowncast(40, value); } } /** * @dev Returns the downcasted int32 from int256, reverting on * overflow (when the input is less than smallest int32 or * greater than largest int32). * * Counterpart to Solidity's `int32` operator. * * Requirements: * * - input must fit into 32 bits */ function toInt32(int256 value) internal pure returns (int32 downcasted) { downcasted = int32(value); if (downcasted != value) { revert SafeCastOverflowedIntDowncast(32, value); } } /** * @dev Returns the downcasted int24 from int256, reverting on * overflow (when the input is less than smallest int24 or * greater than largest int24). * * Counterpart to Solidity's `int24` operator. * * Requirements: * * - input must fit into 24 bits */ function toInt24(int256 value) internal pure returns (int24 downcasted) { downcasted = int24(value); if (downcasted != value) { revert SafeCastOverflowedIntDowncast(24, value); } } /** * @dev Returns the downcasted int16 from int256, reverting on * overflow (when the input is less than smallest int16 or * greater than largest int16). * * Counterpart to Solidity's `int16` operator. * * Requirements: * * - input must fit into 16 bits */ function toInt16(int256 value) internal pure returns (int16 downcasted) { downcasted = int16(value); if (downcasted != value) { revert SafeCastOverflowedIntDowncast(16, value); } } /** * @dev Returns the downcasted int8 from int256, reverting on * overflow (when the input is less than smallest int8 or * greater than largest int8). * * Counterpart to Solidity's `int8` operator. * * Requirements: * * - input must fit into 8 bits */ function toInt8(int256 value) internal pure returns (int8 downcasted) { downcasted = int8(value); if (downcasted != value) { revert SafeCastOverflowedIntDowncast(8, value); } } /** * @dev Converts an unsigned uint256 into a signed int256. * * Requirements: * * - input must be less than or equal to maxInt256. */ function toInt256(uint256 value) internal pure returns (int256) { // Note: Unsafe cast below is okay because `type(int256).max` is guaranteed to be positive if (value > uint256(type(int256).max)) { revert SafeCastOverflowedUintToInt(value); } return int256(value); } /** * @dev Cast a boolean (false or true) to a uint256 (0 or 1) with no jump. */ function toUint(bool b) internal pure returns (uint256 u) { assembly ("memory-safe") { u := iszero(iszero(b)) } } }contracts/erc1155pausable.sol
// SPDX-License-Identifier: MIT pragma solidity ^0.8.20; import "@openzeppelin/contracts/token/ERC1155/extensions/ERC1155Supply.sol"; import "@openzeppelin/contracts/token/ERC1155/extensions/ERC1155Pausable.sol"; import "@openzeppelin/contracts/access/Ownable.sol"; /// @title Minimal ERC-7572 Contract Metadata Interface /// @notice Interface for contract-level metadata interface IERC7572 { /// @notice Returns the contract-level metadata URI /// @return The URI string pointing to contract metadata function contractURI() external view returns (string memory); /// @notice Emitted when the contract URI is updated event ContractURIUpdated(); } /// @title MintErc1155Pausable /// @notice An ERC1155 token with pausable transfers, supply tracking, per-token locking, and owner-controlled minting /// @dev Combines ERC1155Supply, ERC1155Pausable, Ownable, and implements ERC-7572 for contract metadata contract MintErc1155Pausable is ERC1155Supply, ERC1155Pausable, Ownable, IERC7572 { /// @dev Contract-level metadata URI string private _contractURI; /// @dev Flag to prevent re-initialization bool private _initialized; /// @dev Per-token ID lock status (true = locked, false = unlocked) mapping(uint256 => bool) private _lockedId; /// @notice Emitted when a token ID is locked, preventing user-to-user transfers /// @param id The token ID that was locked event Locked(uint256 indexed id); /// @notice Emitted when a token ID is unlocked, allowing user-to-user transfers /// @param id The token ID that was unlocked event Unlocked(uint256 indexed id); /// @notice Constructs the MintErc1155Pausable contract /// @param initialOwner The address that will be set as the initial owner constructor(address initialOwner) ERC1155("") Ownable(initialOwner) {} /// @notice Initializes the contract with base URI and contract metadata URI /// @dev Can only be called once by the owner. Sets the token URI and contract URI /// @param baseURI The base URI for token metadata (e.g., "https://api.example.com/metadata/{id}.json") /// @param contractURI_ The URI for contract-level metadata function initialize(string memory baseURI, string memory contractURI_) external onlyOwner { require(!_initialized, "Already initialized"); _setURI(baseURI); _contractURI = contractURI_; _initialized = true; emit ContractURIUpdated(); } // --- Admin controls --- /// @notice Pauses all token transfers /// @dev Can only be called by the owner. Prevents all transfers except minting and burning function pause() external onlyOwner { _pause(); } /// @notice Unpauses all token transfers /// @dev Can only be called by the owner. Re-enables transfers function unpause() external onlyOwner { _unpause(); } /// @notice Locks a specific token ID, preventing user-to-user transfers /// @dev Can only be called by the owner. Minting and burning are still allowed when locked /// @param id The token ID to lock function lockId(uint256 id) external onlyOwner { if (!_lockedId[id]) { _lockedId[id] = true; emit Locked(id); } } /// @notice Unlocks a specific token ID, allowing user-to-user transfers /// @dev Can only be called by the owner /// @param id The token ID to unlock function unlockId(uint256 id) external onlyOwner { if (_lockedId[id]) { _lockedId[id] = false; emit Unlocked(id); } } /// @notice Checks if a token ID is currently locked /// @param id The token ID to check /// @return bool True if the token ID is locked, false otherwise function isLocked(uint256 id) external view returns (bool) { return _lockedId[id]; } // --- Metadata --- /// @notice Updates the base URI for all token types /// @dev Can only be called by the owner. Affects the URI returned by uri(uint256) /// @param newuri The new base URI (e.g., "https://api.example.com/metadata/{id}.json") function setURI(string memory newuri) external onlyOwner { _setURI(newuri); } /// @notice Updates the contract-level metadata URI /// @dev Can only be called by the owner. Emits ContractURIUpdated event /// @param newContractURI The new contract metadata URI function setContractURI(string memory newContractURI) external onlyOwner { _contractURI = newContractURI; emit ContractURIUpdated(); } /// @notice Returns the contract-level metadata URI /// @dev Implements ERC-7572 /// @return The contract metadata URI string function contractURI() external view override returns (string memory) { return _contractURI; } // --- Minting --- /// @notice Mints tokens of a specific ID to an address /// @dev Can only be called by the owner. Minting is allowed even when contract is paused or token is locked /// @param to The address that will receive the minted tokens /// @param id The token ID to mint /// @param amount The amount of tokens to mint /// @param data Additional data with no specified format, sent in call to `to` if it's a contract function mint(address to, uint256 id, uint256 amount, bytes memory data) external onlyOwner { _mint(to, id, amount, data); } /// @notice Mints multiple token types to an address in a single transaction /// @dev Can only be called by the owner. Arrays must be equal length /// @param to The address that will receive the minted tokens /// @param ids Array of token IDs to mint /// @param amounts Array of amounts to mint for each token ID /// @param data Additional data with no specified format, sent in call to `to` if it's a contract function mintBatch(address to, uint256[] memory ids, uint256[] memory amounts, bytes memory data) external onlyOwner { _mintBatch(to, ids, amounts, data); } // --- Transfer gate (v5 hook) --- /// @notice Internal function called before any token transfer /// @dev Overrides ERC1155Pausable and ERC1155Supply to enforce locking and pause logic /// Blocks user-to-user transfers for locked token IDs /// Allows minting (from == address(0)) and burning (to == address(0)) even when locked /// @param from The address tokens are transferred from (address(0) for minting) /// @param to The address tokens are transferred to (address(0) for burning) /// @param ids Array of token IDs being transferred /// @param amounts Array of amounts being transferred for each token ID function _update( address from, address to, uint256[] memory ids, uint256[] memory amounts ) internal override(ERC1155Pausable, ERC1155Supply) { // Block user-to-user transfers for locked IDs. // Allow mint (from == 0) and burn (to == 0). if (from != address(0) && to != address(0)) { for (uint256 i = 0; i < ids.length; ++i) { require(!_lockedId[ids[i]], "Token ID is locked"); } } super._update(from, to, ids, amounts); } /// @notice Checks if the contract supports a given interface /// @dev Overrides ERC1155 to add support for IERC7572 /// @param interfaceId The interface identifier to check /// @return bool True if the interface is supported, false otherwise function supportsInterface(bytes4 interfaceId) public view override(ERC1155) returns (bool) { return interfaceId == type(IERC7572).interfaceId || super.supportsInterface(interfaceId); } }
ABI · 9 entries
json
[
{
"name": "ContractDeployed",
"type": "event",
"inputs": [
{
"name": "contractAddress",
"type": "address",
"indexed": true,
"internalType": "address"
},
{
"name": "owner",
"type": "address",
"indexed": true,
"internalType": "address"
},
{
"name": "deployer",
"type": "address",
"indexed": true,
"internalType": "address"
}
],
"anonymous": false
},
{
"name": "allDeployedContracts",
"type": "function",
"inputs": [
{
"name": "",
"type": "uint256",
"internalType": "uint256"
}
],
"outputs": [
{
"name": "",
"type": "address",
"internalType": "address"
}
],
"stateMutability": "view"
},
{
"name": "computeAddress",
"type": "function",
"inputs": [
{
"name": "owner",
"type": "address",
"internalType": "address"
},
{
"name": "salt",
"type": "bytes32",
"internalType": "bytes32"
},
{
"name": "deployer",
"type": "address",
"internalType": "address"
}
],
"outputs": [
{
"name": "",
"type": "address",
"internalType": "address"
}
],
"stateMutability": "pure"
},
{
"name": "deployERC1155",
"type": "function",
"inputs": [
{
"name": "owner",
"type": "address",
"internalType": "address"
}
],
"outputs": [
{
"name": "contractAddress",
"type": "address",
"internalType": "address"
}
],
"stateMutability": "nonpayable"
},
{
"name": "deployERC1155WithSalt",
"type": "function",
"inputs": [
{
"name": "owner",
"type": "address",
"internalType": "address"
},
{
"name": "salt",
"type": "bytes32",
"internalType": "bytes32"
}
],
"outputs": [
{
"name": "contractAddress",
"type": "address",
"internalType": "address"
}
],
"stateMutability": "nonpayable"
},
{
"name": "deployedContracts",
"type": "function",
"inputs": [
{
"name": "",
"type": "address",
"internalType": "address"
},
{
"name": "",
"type": "uint256",
"internalType": "uint256"
}
],
"outputs": [
{
"name": "",
"type": "address",
"internalType": "address"
}
],
"stateMutability": "view"
},
{
"name": "getAllDeployedContracts",
"type": "function",
"inputs": [
{
"name": "offset",
"type": "uint256",
"internalType": "uint256"
},
{
"name": "limit",
"type": "uint256",
"internalType": "uint256"
}
],
"outputs": [
{
"name": "contracts",
"type": "address[]",
"internalType": "address[]"
}
],
"stateMutability": "view"
},
{
"name": "getDeployedContracts",
"type": "function",
"inputs": [
{
"name": "deployer",
"type": "address",
"internalType": "address"
}
],
"outputs": [
{
"name": "",
"type": "address[]",
"internalType": "address[]"
}
],
"stateMutability": "view"
},
{
"name": "getTotalDeployed",
"type": "function",
"inputs": [],
"outputs": [
{
"name": "",
"type": "uint256",
"internalType": "uint256"
}
],
"stateMutability": "view"
}
]