// This contract is part of Zellic’s smart contract dataset, which is a collection of publicly available contract code gathered as of March 2023. | |
// File: https://github.com/OpenZeppelin/openzeppelin-contracts/blob/master/contracts/utils/Context.sol | |
// OpenZeppelin Contracts v4.4.1 (utils/Context.sol) | |
pragma solidity ^0.8.0; | |
/** | |
* @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; | |
} | |
} | |
// File: https://github.com/OpenZeppelin/openzeppelin-contracts/blob/master/contracts/access/Ownable.sol | |
// OpenZeppelin Contracts v4.4.1 (access/Ownable.sol) | |
pragma solidity ^0.8.0; | |
/** | |
* @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. | |
* | |
* By default, the owner account will be the one that deploys the contract. 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; | |
event OwnershipTransferred(address indexed previousOwner, address indexed newOwner); | |
/** | |
* @dev Initializes the contract setting the deployer as the initial owner. | |
*/ | |
constructor() { | |
_transferOwnership(_msgSender()); | |
} | |
/** | |
* @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 { | |
require(owner() == _msgSender(), "Ownable: caller is not the owner"); | |
} | |
/** | |
* @dev Leaves the contract without owner. It will not be possible to call | |
* `onlyOwner` functions anymore. Can only be called by the current owner. | |
* | |
* NOTE: Renouncing ownership will leave the contract without an owner, | |
* thereby removing 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 { | |
require(newOwner != address(0), "Ownable: new owner is the zero address"); | |
_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); | |
} | |
} | |
// File: https://github.com/OpenZeppelin/openzeppelin-contracts/blob/master/contracts/utils/Address.sol | |
// OpenZeppelin Contracts (last updated v4.5.0) (utils/Address.sol) | |
pragma solidity ^0.8.1; | |
/** | |
* @dev Collection of functions related to the address type | |
*/ | |
library Address { | |
/** | |
* @dev Returns true if `account` is a contract. | |
* | |
* [IMPORTANT] | |
* ==== | |
* It is unsafe to assume that an address for which this function returns | |
* false is an externally-owned account (EOA) and not a contract. | |
* | |
* Among others, `isContract` will return false for the following | |
* types of addresses: | |
* | |
* - an externally-owned account | |
* - a contract in construction | |
* - an address where a contract will be created | |
* - an address where a contract lived, but was destroyed | |
* ==== | |
* | |
* [IMPORTANT] | |
* ==== | |
* You shouldn't rely on `isContract` to protect against flash loan attacks! | |
* | |
* Preventing calls from contracts is highly discouraged. It breaks composability, breaks support for smart wallets | |
* like Gnosis Safe, and does not provide security since it can be circumvented by calling from a contract | |
* constructor. | |
* ==== | |
*/ | |
function isContract(address account) internal view returns (bool) { | |
// This method relies on extcodesize/address.code.length, which returns 0 | |
// for contracts in construction, since the code is only stored at the end | |
// of the constructor execution. | |
return account.code.length > 0; | |
} | |
/** | |
* @dev Replacement for Solidity's `transfer`: sends `amount` wei to | |
* `recipient`, forwarding all available gas and reverting on errors. | |
* | |
* https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost | |
* of certain opcodes, possibly making contracts go over the 2300 gas limit | |
* imposed by `transfer`, making them unable to receive funds via | |
* `transfer`. {sendValue} removes this limitation. | |
* | |
* https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more]. | |
* | |
* IMPORTANT: because control is transferred to `recipient`, care must be | |
* taken to not create reentrancy vulnerabilities. Consider using | |
* {ReentrancyGuard} or the | |
* https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern]. | |
*/ | |
function sendValue(address payable recipient, uint256 amount) internal { | |
require(address(this).balance >= amount, "Address: insufficient balance"); | |
(bool success, ) = recipient.call{value: amount}(""); | |
require(success, "Address: unable to send value, recipient may have reverted"); | |
} | |
/** | |
* @dev Performs a Solidity function call using a low level `call`. A | |
* plain `call` is an unsafe replacement for a function call: use this | |
* function instead. | |
* | |
* If `target` reverts with a revert reason, it is bubbled up by this | |
* function (like regular Solidity function calls). | |
* | |
* Returns the raw returned data. To convert to the expected return value, | |
* use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`]. | |
* | |
* Requirements: | |
* | |
* - `target` must be a contract. | |
* - calling `target` with `data` must not revert. | |
* | |
* _Available since v3.1._ | |
*/ | |
function functionCall(address target, bytes memory data) internal returns (bytes memory) { | |
return functionCallWithValue(target, data, 0, "Address: low-level call failed"); | |
} | |
/** | |
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with | |
* `errorMessage` as a fallback revert reason when `target` reverts. | |
* | |
* _Available since v3.1._ | |
*/ | |
function functionCall( | |
address target, | |
bytes memory data, | |
string memory errorMessage | |
) internal returns (bytes memory) { | |
return functionCallWithValue(target, data, 0, errorMessage); | |
} | |
/** | |
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], | |
* but also transferring `value` wei to `target`. | |
* | |
* Requirements: | |
* | |
* - the calling contract must have an ETH balance of at least `value`. | |
* - the called Solidity function must be `payable`. | |
* | |
* _Available since v3.1._ | |
*/ | |
function functionCallWithValue( | |
address target, | |
bytes memory data, | |
uint256 value | |
) internal returns (bytes memory) { | |
return functionCallWithValue(target, data, value, "Address: low-level call with value failed"); | |
} | |
/** | |
* @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but | |
* with `errorMessage` as a fallback revert reason when `target` reverts. | |
* | |
* _Available since v3.1._ | |
*/ | |
function functionCallWithValue( | |
address target, | |
bytes memory data, | |
uint256 value, | |
string memory errorMessage | |
) internal returns (bytes memory) { | |
require(address(this).balance >= value, "Address: insufficient balance for call"); | |
require(isContract(target), "Address: call to non-contract"); | |
(bool success, bytes memory returndata) = target.call{value: value}(data); | |
return verifyCallResult(success, returndata, errorMessage); | |
} | |
/** | |
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], | |
* but performing a static call. | |
* | |
* _Available since v3.3._ | |
*/ | |
function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) { | |
return functionStaticCall(target, data, "Address: low-level static call failed"); | |
} | |
/** | |
* @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`], | |
* but performing a static call. | |
* | |
* _Available since v3.3._ | |
*/ | |
function functionStaticCall( | |
address target, | |
bytes memory data, | |
string memory errorMessage | |
) internal view returns (bytes memory) { | |
require(isContract(target), "Address: static call to non-contract"); | |
(bool success, bytes memory returndata) = target.staticcall(data); | |
return verifyCallResult(success, returndata, errorMessage); | |
} | |
/** | |
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], | |
* but performing a delegate call. | |
* | |
* _Available since v3.4._ | |
*/ | |
function functionDelegateCall(address target, bytes memory data) internal returns (bytes memory) { | |
return functionDelegateCall(target, data, "Address: low-level delegate call failed"); | |
} | |
/** | |
* @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`], | |
* but performing a delegate call. | |
* | |
* _Available since v3.4._ | |
*/ | |
function functionDelegateCall( | |
address target, | |
bytes memory data, | |
string memory errorMessage | |
) internal returns (bytes memory) { | |
require(isContract(target), "Address: delegate call to non-contract"); | |
(bool success, bytes memory returndata) = target.delegatecall(data); | |
return verifyCallResult(success, returndata, errorMessage); | |
} | |
/** | |
* @dev Tool to verifies that a low level call was successful, and revert if it wasn't, either by bubbling the | |
* revert reason using the provided one. | |
* | |
* _Available since v4.3._ | |
*/ | |
function verifyCallResult( | |
bool success, | |
bytes memory returndata, | |
string memory errorMessage | |
) internal pure returns (bytes memory) { | |
if (success) { | |
return returndata; | |
} else { | |
// Look for revert reason and bubble it up if present | |
if (returndata.length > 0) { | |
// The easiest way to bubble the revert reason is using memory via assembly | |
/// @solidity memory-safe-assembly | |
assembly { | |
let returndata_size := mload(returndata) | |
revert(add(32, returndata), returndata_size) | |
} | |
} else { | |
revert(errorMessage); | |
} | |
} | |
} | |
} | |
// File: https://github.com/OpenZeppelin/openzeppelin-contracts/blob/master/contracts/utils/introspection/IERC165.sol | |
// OpenZeppelin Contracts v4.4.1 (utils/introspection/IERC165.sol) | |
pragma solidity ^0.8.0; | |
/** | |
* @dev Interface of the ERC165 standard, as defined in the | |
* https://eips.ethereum.org/EIPS/eip-165[EIP]. | |
* | |
* 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[EIP 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); | |
} | |
// File: https://github.com/OpenZeppelin/openzeppelin-contracts/blob/master/contracts/utils/introspection/ERC165.sol | |
// OpenZeppelin Contracts v4.4.1 (utils/introspection/ERC165.sol) | |
pragma solidity ^0.8.0; | |
/** | |
* @dev Implementation of the {IERC165} interface. | |
* | |
* Contracts that want to implement ERC165 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); | |
* } | |
* ``` | |
* | |
* Alternatively, {ERC165Storage} provides an easier to use but more expensive implementation. | |
*/ | |
abstract contract ERC165 is IERC165 { | |
/** | |
* @dev See {IERC165-supportsInterface}. | |
*/ | |
function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) { | |
return interfaceId == type(IERC165).interfaceId; | |
} | |
} | |
// File: https://github.com/OpenZeppelin/openzeppelin-contracts/blob/master/contracts/token/ERC1155/IERC1155Receiver.sol | |
// OpenZeppelin Contracts (last updated v4.5.0) (token/ERC1155/IERC1155Receiver.sol) | |
pragma solidity ^0.8.0; | |
/** | |
* @dev _Available since v3.1._ | |
*/ | |
interface IERC1155Receiver is IERC165 { | |
/** | |
* @dev Handles the receipt of a single ERC1155 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 ERC1155 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); | |
} | |
// File: https://github.com/OpenZeppelin/openzeppelin-contracts/blob/master/contracts/token/ERC1155/IERC1155.sol | |
// OpenZeppelin Contracts v4.4.1 (token/ERC1155/IERC1155.sol) | |
pragma solidity ^0.8.0; | |
/** | |
* @dev Required interface of an ERC1155 compliant contract, as defined in the | |
* https://eips.ethereum.org/EIPS/eip-1155[EIP]. | |
* | |
* _Available since v3.1._ | |
*/ | |
interface IERC1155 is IERC165 { | |
/** | |
* @dev Emitted when `value` tokens of token 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 amount of tokens of token type `id` owned by `account`. | |
* | |
* Requirements: | |
* | |
* - `account` cannot be the zero address. | |
*/ | |
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 caller. | |
*/ | |
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 `amount` tokens of token type `id` from `from` to `to`. | |
* | |
* 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 `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 amount, | |
bytes calldata data | |
) external; | |
/** | |
* @dev xref:ROOT:erc1155.adoc#batch-operations[Batched] version of {safeTransferFrom}. | |
* | |
* Emits a {TransferBatch} event. | |
* | |
* Requirements: | |
* | |
* - `ids` and `amounts` 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 amounts, | |
bytes calldata data | |
) external; | |
} | |
// File: https://github.com/OpenZeppelin/openzeppelin-contracts/blob/master/contracts/token/ERC1155/extensions/IERC1155MetadataURI.sol | |
// OpenZeppelin Contracts v4.4.1 (token/ERC1155/extensions/IERC1155MetadataURI.sol) | |
pragma solidity ^0.8.0; | |
/** | |
* @dev Interface of the optional ERC1155MetadataExtension interface, as defined | |
* in the https://eips.ethereum.org/EIPS/eip-1155#metadata-extensions[EIP]. | |
* | |
* _Available since v3.1._ | |
*/ | |
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); | |
} | |
// File: https://github.com/OpenZeppelin/openzeppelin-contracts/blob/master/contracts/token/ERC1155/ERC1155.sol | |
// OpenZeppelin Contracts (last updated v4.6.0) (token/ERC1155/ERC1155.sol) | |
pragma solidity ^0.8.0; | |
/** | |
* @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 | |
* | |
* _Available since v3.1._ | |
*/ | |
contract ERC1155 is Context, ERC165, IERC1155, IERC1155MetadataURI { | |
using Address for address; | |
// Mapping from token ID to account balances | |
mapping(uint256 => mapping(address => uint256)) private _balances; | |
// Mapping from account to operator approvals | |
mapping(address => mapping(address => 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_); | |
} | |
/** | |
* @dev See {IERC165-supportsInterface}. | |
*/ | |
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 EIP]. | |
* | |
* Clients calling this function must replace the `\{id\}` substring with the | |
* actual token type ID. | |
*/ | |
function uri(uint256) public view virtual override returns (string memory) { | |
return _uri; | |
} | |
/** | |
* @dev See {IERC1155-balanceOf}. | |
* | |
* Requirements: | |
* | |
* - `account` cannot be the zero address. | |
*/ | |
function balanceOf(address account, uint256 id) public view virtual override returns (uint256) { | |
require(account != address(0), "ERC1155: address zero is not a valid owner"); | |
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 | |
override | |
returns (uint256[] memory) | |
{ | |
require(accounts.length == ids.length, "ERC1155: accounts and ids length mismatch"); | |
uint256[] memory batchBalances = new uint256[](accounts.length); | |
for (uint256 i = 0; i < accounts.length; ++i) { | |
batchBalances[i] = balanceOf(accounts[i], ids[i]); | |
} | |
return batchBalances; | |
} | |
/** | |
* @dev See {IERC1155-setApprovalForAll}. | |
*/ | |
function setApprovalForAll(address operator, bool approved) public virtual override { | |
_setApprovalForAll(_msgSender(), operator, approved); | |
} | |
/** | |
* @dev See {IERC1155-isApprovedForAll}. | |
*/ | |
function isApprovedForAll(address account, address operator) public view virtual override returns (bool) { | |
return _operatorApprovals[account][operator]; | |
} | |
/** | |
* @dev See {IERC1155-safeTransferFrom}. | |
*/ | |
function safeTransferFrom( | |
address from, | |
address to, | |
uint256 id, | |
uint256 amount, | |
bytes memory data | |
) public virtual override { | |
require( | |
from == _msgSender() || isApprovedForAll(from, _msgSender()), | |
"ERC1155: caller is not token owner nor approved" | |
); | |
_safeTransferFrom(from, to, id, amount, data); | |
} | |
/** | |
* @dev See {IERC1155-safeBatchTransferFrom}. | |
*/ | |
function safeBatchTransferFrom( | |
address from, | |
address to, | |
uint256[] memory ids, | |
uint256[] memory amounts, | |
bytes memory data | |
) public virtual override { | |
require( | |
from == _msgSender() || isApprovedForAll(from, _msgSender()), | |
"ERC1155: caller is not token owner nor approved" | |
); | |
_safeBatchTransferFrom(from, to, ids, amounts, data); | |
} | |
/** | |
* @dev Transfers `amount` 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 `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 amount, | |
bytes memory data | |
) internal virtual { | |
require(to != address(0), "ERC1155: transfer to the zero address"); | |
address operator = _msgSender(); | |
uint256[] memory ids = _asSingletonArray(id); | |
uint256[] memory amounts = _asSingletonArray(amount); | |
_beforeTokenTransfer(operator, from, to, ids, amounts, data); | |
uint256 fromBalance = _balances[id][from]; | |
require(fromBalance >= amount, "ERC1155: insufficient balance for transfer"); | |
unchecked { | |
_balances[id][from] = fromBalance - amount; | |
} | |
_balances[id][to] += amount; | |
emit TransferSingle(operator, from, to, id, amount); | |
_afterTokenTransfer(operator, from, to, ids, amounts, data); | |
_doSafeTransferAcceptanceCheck(operator, from, to, id, amount, 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. | |
*/ | |
function _safeBatchTransferFrom( | |
address from, | |
address to, | |
uint256[] memory ids, | |
uint256[] memory amounts, | |
bytes memory data | |
) internal virtual { | |
require(ids.length == amounts.length, "ERC1155: ids and amounts length mismatch"); | |
require(to != address(0), "ERC1155: transfer to the zero address"); | |
address operator = _msgSender(); | |
_beforeTokenTransfer(operator, from, to, ids, amounts, data); | |
for (uint256 i = 0; i < ids.length; ++i) { | |
uint256 id = ids[i]; | |
uint256 amount = amounts[i]; | |
uint256 fromBalance = _balances[id][from]; | |
require(fromBalance >= amount, "ERC1155: insufficient balance for transfer"); | |
unchecked { | |
_balances[id][from] = fromBalance - amount; | |
} | |
_balances[id][to] += amount; | |
} | |
emit TransferBatch(operator, from, to, ids, amounts); | |
_afterTokenTransfer(operator, from, to, ids, amounts, data); | |
_doSafeBatchTransferAcceptanceCheck(operator, from, to, ids, amounts, 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 EIP]. | |
* | |
* By this mechanism, any occurrence of the `\{id\}` substring in either the | |
* URI or any of the amounts 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 `amount` tokens of token 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 amount, | |
bytes memory data | |
) internal virtual { | |
require(to != address(0), "ERC1155: mint to the zero address"); | |
address operator = _msgSender(); | |
uint256[] memory ids = _asSingletonArray(id); | |
uint256[] memory amounts = _asSingletonArray(amount); | |
_beforeTokenTransfer(operator, address(0), to, ids, amounts, data); | |
_balances[id][to] += amount; | |
emit TransferSingle(operator, address(0), to, id, amount); | |
_afterTokenTransfer(operator, address(0), to, ids, amounts, data); | |
_doSafeTransferAcceptanceCheck(operator, address(0), to, id, amount, data); | |
} | |
/** | |
* @dev xref:ROOT:erc1155.adoc#batch-operations[Batched] version of {_mint}. | |
* | |
* Emits a {TransferBatch} event. | |
* | |
* Requirements: | |
* | |
* - `ids` and `amounts` must have the same length. | |
* - 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 amounts, | |
bytes memory data | |
) internal virtual { | |
require(to != address(0), "ERC1155: mint to the zero address"); | |
require(ids.length == amounts.length, "ERC1155: ids and amounts length mismatch"); | |
address operator = _msgSender(); | |
_beforeTokenTransfer(operator, address(0), to, ids, amounts, data); | |
for (uint256 i = 0; i < ids.length; i++) { | |
_balances[ids[i]][to] += amounts[i]; | |
} | |
emit TransferBatch(operator, address(0), to, ids, amounts); | |
_afterTokenTransfer(operator, address(0), to, ids, amounts, data); | |
_doSafeBatchTransferAcceptanceCheck(operator, address(0), to, ids, amounts, data); | |
} | |
/** | |
* @dev Destroys `amount` tokens of token type `id` from `from` | |
* | |
* Emits a {TransferSingle} event. | |
* | |
* Requirements: | |
* | |
* - `from` cannot be the zero address. | |
* - `from` must have at least `amount` tokens of token type `id`. | |
*/ | |
function _burn( | |
address from, | |
uint256 id, | |
uint256 amount | |
) internal virtual { | |
require(from != address(0), "ERC1155: burn from the zero address"); | |
address operator = _msgSender(); | |
uint256[] memory ids = _asSingletonArray(id); | |
uint256[] memory amounts = _asSingletonArray(amount); | |
_beforeTokenTransfer(operator, from, address(0), ids, amounts, ""); | |
uint256 fromBalance = _balances[id][from]; | |
require(fromBalance >= amount, "ERC1155: burn amount exceeds balance"); | |
unchecked { | |
_balances[id][from] = fromBalance - amount; | |
} | |
emit TransferSingle(operator, from, address(0), id, amount); | |
_afterTokenTransfer(operator, from, address(0), ids, amounts, ""); | |
} | |
/** | |
* @dev xref:ROOT:erc1155.adoc#batch-operations[Batched] version of {_burn}. | |
* | |
* Emits a {TransferBatch} event. | |
* | |
* Requirements: | |
* | |
* - `ids` and `amounts` must have the same length. | |
*/ | |
function _burnBatch( | |
address from, | |
uint256[] memory ids, | |
uint256[] memory amounts | |
) internal virtual { | |
require(from != address(0), "ERC1155: burn from the zero address"); | |
require(ids.length == amounts.length, "ERC1155: ids and amounts length mismatch"); | |
address operator = _msgSender(); | |
_beforeTokenTransfer(operator, from, address(0), ids, amounts, ""); | |
for (uint256 i = 0; i < ids.length; i++) { | |
uint256 id = ids[i]; | |
uint256 amount = amounts[i]; | |
uint256 fromBalance = _balances[id][from]; | |
require(fromBalance >= amount, "ERC1155: burn amount exceeds balance"); | |
unchecked { | |
_balances[id][from] = fromBalance - amount; | |
} | |
} | |
emit TransferBatch(operator, from, address(0), ids, amounts); | |
_afterTokenTransfer(operator, from, address(0), ids, amounts, ""); | |
} | |
/** | |
* @dev Approve `operator` to operate on all of `owner` tokens | |
* | |
* Emits an {ApprovalForAll} event. | |
*/ | |
function _setApprovalForAll( | |
address owner, | |
address operator, | |
bool approved | |
) internal virtual { | |
require(owner != operator, "ERC1155: setting approval status for self"); | |
_operatorApprovals[owner][operator] = approved; | |
emit ApprovalForAll(owner, operator, approved); | |
} | |
/** | |
* @dev Hook that is called before any token transfer. This includes minting | |
* and burning, as well as batched variants. | |
* | |
* The same hook is called on both single and batched variants. For single | |
* transfers, the length of the `ids` and `amounts` arrays will be 1. | |
* | |
* Calling conditions (for each `id` and `amount` pair): | |
* | |
* - When `from` and `to` are both non-zero, `amount` of ``from``'s tokens | |
* of token type `id` will be transferred to `to`. | |
* - When `from` is zero, `amount` tokens of token type `id` will be minted | |
* for `to`. | |
* - when `to` is zero, `amount` of ``from``'s tokens of token type `id` | |
* will be burned. | |
* - `from` and `to` are never both zero. | |
* - `ids` and `amounts` have the same, non-zero length. | |
* | |
* To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks]. | |
*/ | |
function _beforeTokenTransfer( | |
address operator, | |
address from, | |
address to, | |
uint256[] memory ids, | |
uint256[] memory amounts, | |
bytes memory data | |
) internal virtual {} | |
/** | |
* @dev Hook that is called after any token transfer. This includes minting | |
* and burning, as well as batched variants. | |
* | |
* The same hook is called on both single and batched variants. For single | |
* transfers, the length of the `id` and `amount` arrays will be 1. | |
* | |
* Calling conditions (for each `id` and `amount` pair): | |
* | |
* - When `from` and `to` are both non-zero, `amount` of ``from``'s tokens | |
* of token type `id` will be transferred to `to`. | |
* - When `from` is zero, `amount` tokens of token type `id` will be minted | |
* for `to`. | |
* - when `to` is zero, `amount` of ``from``'s tokens of token type `id` | |
* will be burned. | |
* - `from` and `to` are never both zero. | |
* - `ids` and `amounts` have the same, non-zero length. | |
* | |
* To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks]. | |
*/ | |
function _afterTokenTransfer( | |
address operator, | |
address from, | |
address to, | |
uint256[] memory ids, | |
uint256[] memory amounts, | |
bytes memory data | |
) internal virtual {} | |
function _doSafeTransferAcceptanceCheck( | |
address operator, | |
address from, | |
address to, | |
uint256 id, | |
uint256 amount, | |
bytes memory data | |
) private { | |
if (to.isContract()) { | |
try IERC1155Receiver(to).onERC1155Received(operator, from, id, amount, data) returns (bytes4 response) { | |
if (response != IERC1155Receiver.onERC1155Received.selector) { | |
revert("ERC1155: ERC1155Receiver rejected tokens"); | |
} | |
} catch Error(string memory reason) { | |
revert(reason); | |
} catch { | |
revert("ERC1155: transfer to non ERC1155Receiver implementer"); | |
} | |
} | |
} | |
function _doSafeBatchTransferAcceptanceCheck( | |
address operator, | |
address from, | |
address to, | |
uint256[] memory ids, | |
uint256[] memory amounts, | |
bytes memory data | |
) private { | |
if (to.isContract()) { | |
try IERC1155Receiver(to).onERC1155BatchReceived(operator, from, ids, amounts, data) returns ( | |
bytes4 response | |
) { | |
if (response != IERC1155Receiver.onERC1155BatchReceived.selector) { | |
revert("ERC1155: ERC1155Receiver rejected tokens"); | |
} | |
} catch Error(string memory reason) { | |
revert(reason); | |
} catch { | |
revert("ERC1155: transfer to non ERC1155Receiver implementer"); | |
} | |
} | |
} | |
function _asSingletonArray(uint256 element) private pure returns (uint256[] memory) { | |
uint256[] memory array = new uint256[](1); | |
array[0] = element; | |
return array; | |
} | |
} | |
// File: contracts/BootyCallsNFTContract.sol | |
pragma solidity ^0.8.0; | |
contract NFTContract is ERC1155, Ownable { | |
string public name = "Booty Calls"; | |
string public symbol = "BC"; | |
constructor() ERC1155("https://ipfs.moralis.io:2053/ipfs/QmY7AzH6usNFhbya1TT3P63eWHAzdqaWjNSy38n7G9kUip/metadata/{id}.json") { | |
} | |
function setURI(string memory newuri) public onlyOwner { | |
_setURI(newuri); | |
} | |
function mint(address account, uint256 id, uint256 amount) public onlyOwner { | |
_mint(account, id, amount, ""); | |
} | |
} |