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University-Dev-Tours/India/MIT-Meerut/CoreWorkshop-1727168404118 (1)/.deps/npm/@openzeppelin/contracts/access/Ownable.sol

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+// 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);
+    }
+}

University-Dev-Tours/India/MIT-Meerut/CoreWorkshop-1727168404118 (1)/.deps/npm/@openzeppelin/contracts/interfaces/IERC165.sol

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+// SPDX-License-Identifier: MIT
+// OpenZeppelin Contracts (last updated v5.0.0) (interfaces/IERC165.sol)
+
+pragma solidity ^0.8.20;
+
+import {IERC165} from "../utils/introspection/IERC165.sol";

University-Dev-Tours/India/MIT-Meerut/CoreWorkshop-1727168404118 (1)/.deps/npm/@openzeppelin/contracts/interfaces/IERC4906.sol

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+// SPDX-License-Identifier: MIT
+// OpenZeppelin Contracts (last updated v5.0.0) (interfaces/IERC4906.sol)
+
+pragma solidity ^0.8.20;
+
+import {IERC165} from "./IERC165.sol";
+import {IERC721} from "./IERC721.sol";
+
+/// @title EIP-721 Metadata Update Extension
+interface IERC4906 is IERC165, IERC721 {
+    /// @dev This event emits when the metadata of a token is changed.
+    /// So that the third-party platforms such as NFT market could
+    /// timely update the images and related attributes of the NFT.
+    event MetadataUpdate(uint256 _tokenId);
+
+    /// @dev This event emits when the metadata of a range of tokens is changed.
+    /// So that the third-party platforms such as NFT market could
+    /// timely update the images and related attributes of the NFTs.
+    event BatchMetadataUpdate(uint256 _fromTokenId, uint256 _toTokenId);
+}

University-Dev-Tours/India/MIT-Meerut/CoreWorkshop-1727168404118 (1)/.deps/npm/@openzeppelin/contracts/interfaces/IERC721.sol

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+// SPDX-License-Identifier: MIT
+// OpenZeppelin Contracts (last updated v5.0.0) (interfaces/IERC721.sol)
+
+pragma solidity ^0.8.20;
+
+import {IERC721} from "../token/ERC721/IERC721.sol";

University-Dev-Tours/India/MIT-Meerut/CoreWorkshop-1727168404118 (1)/.deps/npm/@openzeppelin/contracts/interfaces/draft-IERC6093.sol

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+// SPDX-License-Identifier: MIT
+// OpenZeppelin Contracts (last updated v5.0.0) (interfaces/draft-IERC6093.sol)
+pragma solidity ^0.8.20;
+
+/**
+ * @dev Standard ERC20 Errors
+ * Interface of the https://eips.ethereum.org/EIPS/eip-6093[ERC-6093] custom errors for ERC20 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 ERC721 Errors
+ * Interface of the https://eips.ethereum.org/EIPS/eip-6093[ERC-6093] custom errors for ERC721 tokens.
+ */
+interface IERC721Errors {
+    /**
+     * @dev Indicates that an address can't be an owner. For example, `address(0)` is a forbidden owner in EIP-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 ERC1155 Errors
+ * Interface of the https://eips.ethereum.org/EIPS/eip-6093[ERC-6093] custom errors for ERC1155 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);
+}