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此合同的源代码已经过验证！
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0.8.19+commit.7dd6d404
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Solidity
// Sources flattened with hardhat v2.0.3 https://hardhat.org
// File @openzeppelin/contracts/utils/Address.sol@v3.2.0
// SPDX-License-Identifier: MIT
pragma solidity ^0.6.2;
/**
* @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
* ====
*/
function isContract(address account) internal view returns (bool) {
// This method relies in extcodesize, which returns 0 for contracts in
// construction, since the code is only stored at the end of the
// constructor execution.
uint256 size;
// solhint-disable-next-line no-inline-assembly
assembly { size := extcodesize(account) }
return size > 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");
// solhint-disable-next-line avoid-low-level-calls, avoid-call-value
(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 functionCall(target, data, "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");
return _functionCallWithValue(target, data, value, errorMessage);
}
function _functionCallWithValue(address target, bytes memory data, uint256 weiValue, string memory errorMessage) private returns (bytes memory) {
require(isContract(target), "Address: call to non-contract");
// solhint-disable-next-line avoid-low-level-calls
(bool success, bytes memory returndata) = target.call{ value: weiValue }(data);
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
// solhint-disable-next-line no-inline-assembly
assembly {
let returndata_size := mload(returndata)
revert(add(32, returndata), returndata_size)
}
} else {
revert(errorMessage);
}
}
}
}
// File @openzeppelin/contracts/GSN/Context.sol@v3.2.0
pragma solidity ^0.6.0;
/*
* @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 GSN 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 payable) {
return msg.sender;
}
function _msgData() internal view virtual returns (bytes memory) {
this; // silence state mutability warning without generating bytecode - see https://github.com/ethereum/solidity/issues/2691
return msg.data;
}
}
// File @openzeppelin/contracts/introspection/IERC165.sol@v3.2.0
pragma solidity ^0.6.0;
/**
* @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 @openzeppelin/contracts/introspection/ERC165.sol@v3.2.0
pragma solidity ^0.6.0;
/**
* @dev Implementation of the {IERC165} interface.
*
* Contracts may inherit from this and call {_registerInterface} to declare
* their support of an interface.
*/
contract ERC165 is IERC165 {
/*
* bytes4(keccak256('supportsInterface(bytes4)')) == 0x01ffc9a7
*/
bytes4 private constant _INTERFACE_ID_ERC165 = 0x01ffc9a7;
/**
* @dev Mapping of interface ids to whether or not it's supported.
*/
mapping(bytes4 => bool) private _supportedInterfaces;
constructor () internal {
// Derived contracts need only register support for their own interfaces,
// we register support for ERC165 itself here
_registerInterface(_INTERFACE_ID_ERC165);
}
/**
* @dev See {IERC165-supportsInterface}.
*
* Time complexity O(1), guaranteed to always use less than 30 000 gas.
*/
function supportsInterface(bytes4 interfaceId) public view override returns (bool) {
return _supportedInterfaces[interfaceId];
}
/**
* @dev Registers the contract as an implementer of the interface defined by
* `interfaceId`. Support of the actual ERC165 interface is automatic and
* registering its interface id is not required.
*
* See {IERC165-supportsInterface}.
*
* Requirements:
*
* - `interfaceId` cannot be the ERC165 invalid interface (`0xffffffff`).
*/
function _registerInterface(bytes4 interfaceId) internal virtual {
require(interfaceId != 0xffffffff, "ERC165: invalid interface id");
_supportedInterfaces[interfaceId] = true;
}
}
// File @animoca/ethereum-contracts-assets_inventory/contracts/token/ERC1155/IERC1155.sol@v6.0.0
pragma solidity 0.6.8;
/**
* @title ERC-1155 Multi Token Standard, basic interface
* @dev See https://eips.ethereum.org/EIPS/eip-1155
* Note: The ERC-165 identifier for this interface is 0xd9b67a26.
*/
interface IERC1155 {
event TransferSingle(
address indexed _operator,
address indexed _from,
address indexed _to,
uint256 _id,
uint256 _value
);
event TransferBatch(
address indexed _operator,
address indexed _from,
address indexed _to,
uint256[] _ids,
uint256[] _values
);
event ApprovalForAll(
address indexed _owner,
address indexed _operator,
bool _approved
);
event URI(
string _value,
uint256 indexed _id
);
/**
* @notice Transfers `value` amount of an `id` from `from` to `to` (with safety call).
* @dev Caller must be approved to manage the tokens being transferred out of the `from` account (see "Approval" section of the standard).
* @dev MUST revert if `to` is the zero address.
* @dev MUST revert if balance of holder for token `id` is lower than the `value` sent.
* @dev MUST revert on any other error.
* @dev MUST emit the `TransferSingle` event to reflect the balance change (see "Safe Transfer Rules" section of the standard).
* @dev After the above conditions are met, this function MUST check if `to` is a smart contract (e.g. code size > 0). If so, it MUST call `onERC1155Received` on `to` and act appropriately (see "Safe Transfer Rules" section of the standard).
* @param from Source address
* @param to Target address
* @param id ID of the token type
* @param value Transfer amount
* @param data Additional data with no specified format, MUST be sent unaltered in call to `onERC1155Received` on `to`
*/
function safeTransferFrom(
address from,
address to,
uint256 id,
uint256 value,
bytes calldata data
) external;
/**
* @notice Transfers `values` amount(s) of `ids` from the `from` address to the `to` address specified (with safety call).
* @dev Caller must be approved to manage the tokens being transferred out of the `from` account (see "Approval" section of the standard).
* @dev MUST revert if `to` is the zero address.
* @dev MUST revert if length of `ids` is not the same as length of `values`.
* @dev MUST revert if any of the balance(s) of the holder(s) for token(s) in `ids` is lower than the respective amount(s) in `values` sent to the recipient.
* @dev MUST revert on any other error.
* @dev MUST emit `TransferSingle` or `TransferBatch` event(s) such that all the balance changes are reflected (see "Safe Transfer Rules" section of the standard).
* @dev Balance changes and events MUST follow the ordering of the arrays (_ids[0]/_values[0] before _ids[1]/_values[1], etc).
* @dev After the above conditions for the transfer(s) in the batch are met, this function MUST check if `to` is a smart contract (e.g. code size > 0). If so, it MUST call the relevant `ERC1155TokenReceiver` hook(s) on `to` and act appropriately (see "Safe Transfer Rules" section of the standard).
* @param from Source address
* @param to Target address
* @param ids IDs of each token type (order and length must match _values array)
* @param values Transfer amounts per token type (order and length must match _ids array)
* @param data Additional data with no specified format, MUST be sent unaltered in call to the `ERC1155TokenReceiver` hook(s) on `to`
*/
function safeBatchTransferFrom(
address from,
address to,
uint256[] calldata ids,
uint256[] calldata values,
bytes calldata data
) external;
/**
* @notice Get the balance of an account's tokens.
* @param owner The address of the token holder
* @param id ID of the token
* @return The _owner's balance of the token type requested
*/
function balanceOf(address owner, uint256 id) external view returns (uint256);
/**
* @notice Get the balance of multiple account/token pairs
* @param owners The addresses of the token holders
* @param ids ID of the tokens
* @return The _owner's balance of the token types requested (i.e. balance for each (owner, id) pair)
*/
function balanceOfBatch(
address[] calldata owners,
uint256[] calldata ids
) external view returns (uint256[] memory);
/**
* @notice Enable or disable approval for a third party ("operator") to manage all of the caller's tokens.
* @dev MUST emit the ApprovalForAll event on success.
* @param operator Address to add to the set of authorized operators
* @param approved True if the operator is approved, false to revoke approval
*/
function setApprovalForAll(address operator, bool approved) external;
/**
* @notice Queries the approval status of an operator for a given owner.
* @param owner The owner of the tokens
* @param operator Address of authorized operator
* @return True if the operator is approved, false if not
*/
function isApprovedForAll(address owner, address operator) external view returns (bool);
}
// File @animoca/ethereum-contracts-assets_inventory/contracts/token/ERC1155/IERC1155MetadataURI.sol@v6.0.0
pragma solidity 0.6.8;
/**
* @title ERC-1155 Multi Token Standard, optional metadata URI extension
* @dev See https://eips.ethereum.org/EIPS/eip-1155
* Note: The ERC-165 identifier for this interface is 0x0e89341c.
*/
interface IERC1155MetadataURI {
/**
* @notice A distinct Uniform Resource Identifier (URI) for a given token.
* @dev URIs are defined in RFC 3986.
* @dev The URI MUST point to a JSON file that conforms to the "ERC-1155 Metadata URI JSON Schema".
* @dev The uri function SHOULD be used to retrieve values if no event was emitted.
* @dev The uri function MUST return the same value as the latest event for an _id if it was emitted.
* @dev The uri function MUST NOT be used to check for the existence of a token as it is possible for an implementation to return a valid string even if the token does not exist.
* @return URI string
*/
function uri(uint256 id) external view returns (string memory);
}
// File @animoca/ethereum-contracts-assets_inventory/contracts/token/ERC1155/IERC1155Inventory.sol@v6.0.0
pragma solidity 0.6.8;
/**
* @title ERC-1155 Multi Token Standard, optional Inventory extension
* @dev See https://eips.ethereum.org/EIPS/eip-xxxx
* Interface for fungible/non-fungible tokens management on a 1155-compliant contract.
*
* This interface rationalizes the co-existence of fungible and non-fungible tokens
* within the same contract. As several kinds of fungible tokens can be managed under
* the Multi-Token standard, we consider that non-fungible tokens can be classified
* under their own specific type. We introduce the concept of non-fungible collection
* and consider the usage of 3 types of identifiers:
* (a) Fungible Token identifiers, each representing a set of Fungible Tokens,
* (b) Non-Fungible Collection identifiers, each representing a set of Non-Fungible Tokens (this is not a token),
* (c) Non-Fungible Token identifiers.
* Identifiers nature
* | Type | isFungible | isCollection | isToken |
* | Fungible Token | true | true | true |
* | Non-Fungible Collection | false | true | false |
* | Non-Fungible Token | false | false | true |
*
* Identifiers compatibilities
* | Type | transfer | balance | supply | owner |
* | Fungible Token | OK | OK | OK | NOK |
* | Non-Fungible Collection | NOK | OK | OK | NOK |
* | Non-Fungible Token | OK | 0 or 1 | 0 or 1 | OK |
*
* Note: The ERC-165 identifier for this interface is 0x469bd23f.
*/
interface IERC1155Inventory {
/**
* Optional event emitted when a collection is created.
* This event SHOULD NOT be emitted twice for the same `collectionId`.
*
* The parameters in the functions `collectionOf` and `ownerOf` are required to be
* non-fungible token identifiers, so they should not be called with any collection
* identifiers, else they will revert.
*
* On the contrary, the functions `balanceOf`, `balanceOfBatch` and `totalSupply` are
* best used with collection identifiers, which will return meaningful information for
* the owner.
*/
event CollectionCreated (uint256 indexed collectionId, bool indexed fungible);
/**
* Retrieves the owner of a non-fungible token.
* @dev Reverts if `nftId` is owned by the zero address. // ERC721 compatibility
* @dev Reverts if `nftId` does not represent a non-fungible token.
* @param nftId The token identifier to query.
* @return Address of the current owner of the token.
*/
function ownerOf(uint256 nftId) external view returns (address);
/**
* Retrieves the total supply of `id`.
* If `id` represents a fungible or non-fungible collection, returns the supply of tokens for this collection.
* If `id` represents a non-fungible token, returns 1 if the token exists, else 0.
* @param id The identifier for which to retrieve the supply of.
* @return The supplies for each identifier in `ids`.
*/
function totalSupply(uint256 id) external view returns (uint256);
/**
* Introspects whether or not `id` represents afungible token.
* This function MUST return true even for afungible tokens which is not-yet created.
* @param id The identifier to query.
* @return bool True if `id` represents afungible token, false otherwise.
*/
function isFungible(uint256 id) external pure returns (bool);
/**
* Introspects the non-fungible collection to which `nftId` belongs.
* This function MUST return a value representing a non-fungible collection.
* This function MUST return a value for a non-existing token, and SHOULD NOT be used to check the existence of a non-fungible token.
* @dev Reverts if `nftId` does not represent a non-fungible token.
* @param nftId The token identifier to query the collection of.
* @return uint256 the non-fungible collection identifier to which `nftId` belongs.
*/
function collectionOf(uint256 nftId) external pure returns (uint256);
/**
* @notice this definition replaces the original {ERC1155-balanceOf}.
* Retrieves the balance of `id` owned by account `owner`.
* If `id` represents a fungible or non-fungible collection, returns the balance of tokens for this collection.
* If `id` represents a non-fungible token, returns 1 if the token is owned by `owner`, else 0.
* @param owner The account to retrieve the balance of.
* @param id The identifier to retrieve the balance of.
* @return The balance of `id` owned by account `owner`.
*/
// function balanceOf(address owner, uint256 id) external view returns (uint256);
/**
* @notice this definition replaces the original {ERC1155-balanceOfBatch}.
* Retrieves the balances of `ids` owned by accounts `owners`. For each pair:
* if `id` represents a fungible or non-fungible collection, returns the balance of tokens for this collection,
* if `id` represents a non-fungible token, returns 1 if the token is owned by `owner`, else 0.
* @param owners The addresses of the token holders
* @param ids The identifiers to retrieve the balance of.
* @return The balances of `ids` owned by accounts `owners`.
*/
// function balanceOfBatch(address[] calldata owners, uint256[] calldata ids) external view returns (uint256[] memory);
}
// File @animoca/ethereum-contracts-assets_inventory/contracts/token/ERC1155/IERC1155TokenReceiver.sol@v6.0.0
pragma solidity 0.6.8;
/**
* @title ERC-1155 Multi Token Standard, token receiver
* @dev See https://eips.ethereum.org/EIPS/eip-1155
* Interface for any contract that wants to support transfers from ERC1155 asset contracts.
* Note: The ERC-165 identifier for this interface is 0x4e2312e0.
*/
interface IERC1155TokenReceiver {
/**
* @notice Handle the receipt of a single ERC1155 token type.
* @dev An ERC1155-compliant smart contract MUST call this function on the token recipient contract, at the end of a `safeTransferFrom` after the balance has been updated.
* This function MUST return `bytes4(keccak256("onERC1155Received(address,address,uint256,uint256,bytes)"))` (i.e. 0xf23a6e61) if it accepts the transfer.
* This function MUST revert if it rejects the transfer.
* Return of any other value than the prescribed keccak256 generated value MUST result in the transaction being reverted by the caller.
* @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 `bytes4(keccak256("onERC1155Received(address,address,uint256,uint256,bytes)"))`
*/
function onERC1155Received(
address operator,
address from,
uint256 id,
uint256 value,
bytes calldata data
) external returns (bytes4);
/**
* @notice Handle the receipt of multiple ERC1155 token types.
* @dev An ERC1155-compliant smart contract MUST call this function on the token recipient contract, at the end of a `safeBatchTransferFrom` after the balances have been updated.
* This function MUST return `bytes4(keccak256("onERC1155BatchReceived(address,address,uint256[],uint256[],bytes)"))` (i.e. 0xbc197c81) if it accepts the transfer(s).
* This function MUST revert if it rejects the transfer(s).
* Return of any other value than the prescribed keccak256 generated value MUST result in the transaction being reverted by the caller.
* @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)"))`
*/
function onERC1155BatchReceived(
address operator,
address from,
uint256[] calldata ids,
uint256[] calldata values,
bytes calldata data
) external returns (bytes4);
}
// File @animoca/ethereum-contracts-assets_inventory/contracts/token/ERC1155/ERC1155InventoryBase.sol@v6.0.0
pragma solidity 0.6.8;
abstract contract ERC1155InventoryBase is IERC1155, IERC1155MetadataURI, IERC1155Inventory, ERC165, Context {
// bytes4(keccak256("onERC1155Received(address,address,uint256,uint256,bytes)"))
bytes4 internal constant _ERC1155_RECEIVED = 0xf23a6e61;
// bytes4(keccak256("onERC1155BatchReceived(address,address,uint256[],uint256[],bytes)"))
bytes4 internal constant _ERC1155_BATCH_RECEIVED = 0xbc197c81;
// Burnt non-fungible token owner's magic value
uint256 internal constant _BURNT_NFT_OWNER = 0xdead000000000000000000000000000000000000000000000000000000000000;
// Non-fungible bit. If an id has this bit set, it is a non-fungible (either collection or token)
uint256 internal constant _NF_BIT = 1 << 255;
// Mask for non-fungible collection (including the nf bit)
uint256 internal constant _NF_COLLECTION_MASK = uint256(type(uint32).max) << 224;
uint256 internal constant _NF_TOKEN_MASK = ~_NF_COLLECTION_MASK;
/* owner => operator => approved */
mapping(address => mapping(address => bool)) internal _operators;
/* collection ID => owner => balance */
mapping(uint256 => mapping(address => uint256)) internal _balances;
/* collection ID => supply */
mapping(uint256 => uint256) internal _supplies;
/* NFT ID => owner */
mapping(uint256 => uint256) internal _owners;
/* collection ID => creator */
mapping(uint256 => address) internal _creators;
/**
* @dev Constructor function
*/
constructor() internal {
_registerInterface(type(IERC1155).interfaceId);
_registerInterface(type(IERC1155MetadataURI).interfaceId);
_registerInterface(type(IERC1155Inventory).interfaceId);
}
//================================== ERC1155 =======================================/
/**
* @dev See {IERC1155-balanceOf}.
*/
function balanceOf(address owner, uint256 id) public virtual override view returns (uint256) {
require(owner != address(0), "Inventory: zero address");
if (isNFT(id)) {
return _owners[id] == uint256(owner) ? 1 : 0;
}
return _balances[id][owner];
}
/**
* @dev See {IERC1155-balanceOfBatch}.
*/
function balanceOfBatch(address[] memory owners, uint256[] memory ids)
public
virtual
override
view
returns (uint256[] memory)
{
require(owners.length == ids.length, "Inventory: inconsistent arrays");
uint256[] memory balances = new uint256[](owners.length);
for (uint256 i = 0; i != owners.length; ++i) {
balances[i] = balanceOf(owners[i], ids[i]);
}
return balances;
}
/**
* @dev See {IERC1155-setApprovalForAll}.
*/
function setApprovalForAll(address operator, bool approved) public virtual override {
address sender = _msgSender();
require(operator != sender, "Inventory: self-approval");
_operators[sender][operator] = approved;
emit ApprovalForAll(sender, operator, approved);
}
/**
* @dev See {IERC1155-isApprovedForAll}.
*/
function isApprovedForAll(address tokenOwner, address operator) public virtual override view returns (bool) {
return _operators[tokenOwner][operator];
}
//================================== ERC1155MetadataURI =======================================/
/**
* @dev See {IERC1155MetadataURI-uri}.
*/
function uri(uint256 id) external virtual override view returns (string memory) {
return _uri(id);
}
//================================== ERC1155Inventory =======================================/
/**
* @dev See {IERC1155Inventory-isFungible}.
*/
function isFungible(uint256 id) public virtual override pure returns (bool) {
return id & _NF_BIT == 0;
}
/**
* @dev See {IERC1155Inventory-collectionOf}.
*/
function collectionOf(uint256 nftId) public virtual override pure returns (uint256) {
require(isNFT(nftId), "Inventory: not an NFT");
return nftId & _NF_COLLECTION_MASK;
}
/**
* @dev See {IERC1155Inventory-ownerOf}.
*/
function ownerOf(uint256 nftId) public virtual override view returns (address) {
address owner = address(_owners[nftId]);
require(owner != address(0), "Inventory: non-existing NFT");
return owner;
}
/**
* @dev See {IERC1155Inventory-totalSupply}.
*/
function totalSupply(uint256 id) public virtual override view returns (uint256) {
if (isNFT(id)) {
return address(_owners[id]) == address(0) ? 0 : 1;
} else {
return _supplies[id];
}
}
//================================== ERC1155Inventory Non-standard helpers =======================================/
/**
* @dev Introspects whether an identifier represents an non-fungible token.
* @param id Identifier to query.
* @return True if `id` represents an non-fungible token.
*/
function isNFT(uint256 id) public virtual pure returns (bool) {
return (id & _NF_BIT) != 0 && (id & _NF_TOKEN_MASK != 0);
}
//================================== Inventory Internal Functions =======================================/
/**
* Creates a collection (optional).
* @dev Reverts if `collectionId` does not represent a collection.
* @dev Reverts if `collectionId` has already been created.
* @dev Emits a {IERC1155Inventory-CollectionCreated} event.
* @param collectionId Identifier of the collection.
*/
function _createCollection(uint256 collectionId) internal virtual {
require(!isNFT(collectionId), "Inventory: not a collection");
require(_creators[collectionId] == address(0), "Inventory: existing collection");
_creators[collectionId] = _msgSender();
emit CollectionCreated(collectionId, isFungible(collectionId));
}
/**
* @dev (abstract) Returns an URI for a given identifier.
* @param id Identifier to query the URI of.
* @return The metadata URI for `id`.
*/
function _uri(uint256 id) internal virtual view returns (string memory);
/**
* Returns whether `sender` is authorised to make a transfer on behalf of `from`.
* @param from The address to check operatibility upon.
* @param sender The sender address.
* @return True if sender is `from` or an operator for `from`, false otherwise.
*/
function _isOperatable(address from, address sender) internal virtual view returns (bool) {
return (from == sender) || _operators[from][sender];
}
//================================== Token Receiver Calls Internal =======================================/
/**
* Calls {IERC1155TokenReceiver-onERC1155Received} on a target contract.
* @dev Reverts if `to` is not a contract.
* @dev Reverts if the call to the target fails or is refused.
* @param from Previous token owner.
* @param to New token owner.
* @param id Identifier of the token transferred.
* @param value Amount of token transferred.
* @param data Optional data to send along with the receiver contract call.
*/
function _callOnERC1155Received(
address from,
address to,
uint256 id,
uint256 value,
bytes memory data
) internal {
require(
IERC1155TokenReceiver(to).onERC1155Received(_msgSender(), from, id, value, data) == _ERC1155_RECEIVED,
"Inventory: transfer refused"
);
}
/**
* Calls {IERC1155TokenReceiver-onERC1155batchReceived} on a target contract.
* @dev Reverts if `to` is not a contract.
* @dev Reverts if the call to the target fails or is refused.
* @param from Previous tokens owner.
* @param to New tokens owner.
* @param ids Identifiers of the tokens to transfer.
* @param values Amounts of tokens to transfer.
* @param data Optional data to send along with the receiver contract call.
*/
function _callOnERC1155BatchReceived(
address from,
address to,
uint256[] memory ids,
uint256[] memory values,
bytes memory data
) internal {
require(
IERC1155TokenReceiver(to).onERC1155BatchReceived(_msgSender(), from, ids, values, data) ==
_ERC1155_BATCH_RECEIVED,
"Inventory: transfer refused"
);
}
}
// File @animoca/ethereum-contracts-assets_inventory/contracts/token/ERC1155/ERC1155Inventory.sol@v6.0.0
pragma solidity 0.6.8;
/**
* @title ERC1155Inventory, a contract which manages up to multiple Collections of Fungible and Non-Fungible Tokens
* @dev In this implementation, with N representing the Non-Fungible Collection mask length, identifiers can represent either:
* (a) a Fungible Token:
* - most significant bit == 0
* (b) a Non-Fungible Collection:
* - most significant bit == 1
* - (256-N) least significant bits == 0
* (c) a Non-Fungible Token:
* - most significant bit == 1
* - (256-N) least significant bits != 0
* with N = 32.
*
*/
abstract contract ERC1155Inventory is ERC1155InventoryBase {
using Address for address;
//================================== ERC1155 =======================================/
/**
* @dev See {IERC1155-safeTransferFrom}.
*/
function safeTransferFrom(
address from,
address to,
uint256 id,
uint256 value,
bytes memory data
) public virtual override {
_safeTransferFrom(from, to, id, value, data);
}
/**
* @dev See {IERC1155-safeBatchTransferFrom}.
*/
function safeBatchTransferFrom(
address from,
address to,
uint256[] memory ids,
uint256[] memory values,
bytes memory data
) public virtual override {
_safeBatchTransferFrom(from, to, ids, values, data);
}
//============================== Minting Core Internal Helpers =================================/
function _mintFungible(
address to,
uint256 id,
uint256 value
) internal {
require(value != 0, "Inventory: zero value");
uint256 supply = _supplies[id];
uint256 newSupply = supply + value;
require(newSupply > supply, "Inventory: supply overflow");
_supplies[id] = newSupply;
// cannot overflow as any balance is bounded up by the supply which cannot overflow
_balances[id][to] += value;
}
function _mintNFT(
address to,
uint256 id,
uint256 value,
bool isBatch
) internal {
require(value == 1, "Inventory: wrong NFT value");
require(_owners[id] == 0, "Inventory: existing/burnt NFT");
_owners[id] = uint256(to);
if (!isBatch) {
uint256 collectionId = id & _NF_COLLECTION_MASK;
// it is virtually impossible that a non-fungible collection supply
// overflows due to the cost of minting individual tokens
++_supplies[collectionId];
// cannot overflow as supply cannot overflow
++_balances[collectionId][to];
}
}
//============================== Minting Internal Functions ====================================/
/**
* Mints some token.
* @dev Reverts if `isBatch` is false and `to` is the zero address.
* @dev Reverts if `id` represents a non-fungible collection.
* @dev Reverts if `id` represents a non-fungible token and `value` is not 1.
* @dev Reverts if `id` represents a non-fungible token which is owned by a non-zero address.
* @dev Reverts if `id` represents afungible token and `value` is 0.
* @dev Reverts if `id` represents afungible token and there is an overflow of supply.
* @dev Reverts if `isBatch` is false, `safe` is true and the call to the receiver contract fails or is refused.
* @dev Emits an {IERC1155-TransferSingle} event if `isBatch` is false.
* @param to Address of the new token owner.
* @param id Identifier of the token to mint.
* @param value Amount of token to mint.
* @param data Optional data to send along to a receiver contract.
*/
function _safeMint(
address to,
uint256 id,
uint256 value,
bytes memory data
) internal {
require(to != address(0), "Inventory: transfer to zero");
if (isFungible(id)) {
_mintFungible(to, id, value);
} else if (id & _NF_TOKEN_MASK != 0) {
_mintNFT(to, id, value, false);
} else {
revert("Inventory: not a token id");
}
emit TransferSingle(_msgSender(), address(0), to, id, value);
if (to.isContract()) {
_callOnERC1155Received(address(0), to, id, value, data);
}
}
/**
* Mints a batch of tokens.
* @dev Reverts if `ids` and `values` have different lengths.
* @dev Reverts if `to` is the zero address.
* @dev Reverts if one of `ids` represents a non-fungible collection.
* @dev Reverts if one of `ids` represents a non-fungible token and its paired value is not 1.
* @dev Reverts if one of `ids` represents a non-fungible token which is owned by a non-zero address.
* @dev Reverts if one of `ids` represents afungible token and its paired value is 0.
* @dev Reverts if one of `ids` represents afungible token and there is an overflow of supply.
* @dev Reverts if `safe` is true and the call to the receiver contract fails or is refused.
* @dev Emits an {IERC1155-TransferBatch} event.
* @param to Address of the new tokens owner.
* @param ids Identifiers of the tokens to mint.
* @param values Amounts of tokens to mint.
* @param data Optional data to send along to a receiver contract.
*/
function _safeBatchMint(
address to,
uint256[] memory ids,
uint256[] memory values,
bytes memory data
) internal virtual {
require(to != address(0), "Inventory: transfer to zero");
uint256 length = ids.length;
require(length == values.length, "Inventory: inconsistent arrays");
uint256 nfCollectionId;
uint256 nfCollectionCount;
for (uint256 i; i < length; i++) {
uint256 id = ids[i];
uint256 value = values[i];
if (isFungible(id)) {
_mintFungible(to, id, value);
} else if (id & _NF_TOKEN_MASK != 0) {
_mintNFT(to, id, value, true);
uint256 nextCollectionId = id & _NF_COLLECTION_MASK;
if (nfCollectionId == 0) {
nfCollectionId = nextCollectionId;
nfCollectionCount = 1;
} else {
if (nextCollectionId != nfCollectionId) {
_balances[nfCollectionId][to] += nfCollectionCount;
_supplies[nfCollectionId] += nfCollectionCount;
nfCollectionId = nextCollectionId;
nfCollectionCount = 1;
} else {
nfCollectionCount++;
}
}
} else {
revert("Inventory: not a token id");
}
}
if (nfCollectionId != 0) {
_balances[nfCollectionId][to] += nfCollectionCount;
_supplies[nfCollectionId] += nfCollectionCount;
}
emit TransferBatch(_msgSender(), address(0), to, ids, values);
if (to.isContract()) {
_callOnERC1155BatchReceived(address(0), to, ids, values, data);
}
}
//============================== Transfer Core Internal Helpers =================================/
function _transferFungible(
address from,
address to,
uint256 id,
uint256 value
) internal {
require(value != 0, "Inventory: zero value");
uint256 balance = _balances[id][from];
require(balance >= value, "Inventory: not enough balance");
_balances[id][from] = balance - value;
// cannot overflow as supply cannot overflow
_balances[id][to] += value;
}
function _transferNFT(
address from,
address to,
uint256 id,
uint256 value,
bool isBatch
) internal {
require(value == 1, "Inventory: wrong NFT value");
require(from == address(_owners[id]), "Inventory: non-owned NFT");
_owners[id] = uint256(to);
if (!isBatch) {
uint256 collectionId = id & _NF_COLLECTION_MASK;
// cannot underflow as balance is verified through ownership
_balances[collectionId][from] -= 1;
// cannot overflow as supply cannot overflow
_balances[collectionId][to] += 1;
}
}
//============================== Transfer Internal Functions =======================================/
/**
* Transfers tokens to another address.
* @dev Reverts if `isBatch` is false and `to` is the zero address.
* @dev Reverts if `isBatch` is false the sender is not approved.
* @dev Reverts if `id` represents a non-fungible collection.
* @dev Reverts if `id` represents a non-fungible token and `value` is not 1.
* @dev Reverts if `id` represents a non-fungible token and is not owned by `from`.
* @dev Reverts if `id` represents afungible token and `value` is 0.
* @dev Reverts if `id` represents afungible token and `from` doesn't have enough balance.
* @dev Emits an {IERC1155-TransferSingle} event.
* @param from Current token owner.
* @param to Address of the new token owner.
* @param id Identifier of the token to transfer.
* @param value Amount of token to transfer.
* @param data Optional data to pass to the receiver contract.
*/
function _safeTransferFrom(
address from,
address to,
uint256 id,
uint256 value,
bytes memory data
) internal {
address sender = _msgSender();
require(to != address(0), "Inventory: transfer to zero");
require(_isOperatable(from, sender), "Inventory: non-approved sender");
if (isFungible(id)) {
_transferFungible(from, to, id, value);
} else if (id & _NF_TOKEN_MASK != 0) {
_transferNFT(from, to, id, value, false);
} else {
revert("Inventory: not a token id");
}
emit TransferSingle(sender, from, to, id, value);
if (to.isContract()) {
_callOnERC1155Received(from, to, id, value, data);
}
}
/**
* Transfers multiple tokens to another address
* @dev Reverts if `ids` and `values` have inconsistent lengths.
* @dev Reverts if `to` is the zero address.
* @dev Reverts if the sender is not approved.
* @dev Reverts if one of `ids` does not represent a token.
* @dev Reverts if one of `ids` represents a non-fungible token and `value` is not 1.
* @dev Reverts if one of `ids` represents a non-fungible token and is not owned by `from`.
* @dev Reverts if one of `ids` represents afungible token and `value` is 0.
* @dev Reverts if one of `ids` represents afungible token and `from` doesn't have enough balance.
* @dev Emits an {IERC1155-TransferBatch} event.
* @param from Current token owner.
* @param to Address of the new token owner.
* @param ids Identifiers of the tokens to transfer.
* @param values Amounts of tokens to transfer.
* @param data Optional data to pass to the receiver contract.
*/
function _safeBatchTransferFrom(
address from,
address to,
uint256[] memory ids,
uint256[] memory values,
bytes memory data
) internal virtual {
require(to != address(0), "Inventory: transfer to zero");
uint256 length = ids.length;
require(length == values.length, "Inventory: inconsistent arrays");
address sender = _msgSender();
require(_isOperatable(from, sender), "Inventory: non-approved sender");
uint256 nfCollectionId;
uint256 nfCollectionCount;
for (uint256 i; i < length; i++) {
uint256 id = ids[i];
uint256 value = values[i];
if (isFungible(id)) {
_transferFungible(from, to, id, value);
} else if (id & _NF_TOKEN_MASK != 0) {
_transferNFT(from, to, id, value, true);
uint256 nextCollectionId = id & _NF_COLLECTION_MASK;
if (nfCollectionId == 0) {
nfCollectionId = nextCollectionId;
nfCollectionCount = 1;
} else {
if (nextCollectionId != nfCollectionId) {
_balances[nfCollectionId][from] -= nfCollectionCount;
_balances[nfCollectionId][to] += nfCollectionCount;
nfCollectionId = nextCollectionId;
nfCollectionCount = 1;
} else {
nfCollectionCount++;
}
}
} else {
revert("Inventory: not a token id");
}
}
if (nfCollectionId != 0) {
_balances[nfCollectionId][from] -= nfCollectionCount;
_balances[nfCollectionId][to] += nfCollectionCount;
}
emit TransferBatch(sender, from, to, ids, values);
if (to.isContract()) {
_callOnERC1155BatchReceived(from, to, ids, values, data);
}
}
//============================== Burning Core Internal Helpers =================================/
function _burnFungible(
address from,
uint256 id,
uint256 value
) internal {
require(value != 0, "Inventory: zero value");
uint256 balance = _balances[id][from];
require(balance >= value, "Inventory: not enough balance");
_balances[id][from] = balance - value;
// Cannot underflow
_supplies[id] -= value;
}
function _burnNFT(
address from,
uint256 id,
uint256 value,
bool isBatch
) internal {
require(value == 1, "Inventory: wrong NFT value");
require(from == address(_owners[id]), "Inventory: non-owned NFT");
_owners[id] = _BURNT_NFT_OWNER;
if (!isBatch) {
uint256 collectionId = id & _NF_COLLECTION_MASK;
// cannot underflow as balance is confirmed through ownership
--_balances[collectionId][from];
// Cannot underflow
--_supplies[collectionId];
}
}
//================================ Burning Internal Functions ======================================/
/**
* Burns some token.
* @dev Reverts if `isBatch` is false and the sender is not approved.
* @dev Reverts if `id` represents a non-fungible collection.
* @dev Reverts if `id` represents afungible token and `value` is 0.
* @dev Reverts if `id` represents afungible token and `value` is higher than `from`'s balance.
* @dev Reverts if `id` represents a non-fungible token and `value` is not 1.
* @dev Reverts if `id` represents a non-fungible token which is not owned by `from`.
* @dev Emits an {IERC1155-TransferSingle} event if `isBatch` is false.
* @param from Address of the current token owner.
* @param id Identifier of the token to burn.
* @param value Amount of token to burn.
*/
function _burnFrom(
address from,
uint256 id,
uint256 value
) internal {
address sender = _msgSender();
require(_isOperatable(from, sender), "Inventory: non-approved sender");
if (isFungible(id)) {
_burnFungible(from, id, value);
} else if (id & _NF_TOKEN_MASK != 0) {
_burnNFT(from, id, value, false);
} else {
revert("Inventory: not a token id");
}
emit TransferSingle(sender, from, address(0), id, value);
}
/**
* Burns multiple tokens.
* @dev Reverts if `ids` and `values` have different lengths.
* @dev Reverts if the sender is not approved.
* @dev Reverts if one of `ids` represents a non-fungible collection.
* @dev Reverts if one of `ids` represents afungible token and `value` is 0.
* @dev Reverts if one of `ids` represents afungible token and `value` is higher than `from`'s balance.
* @dev Reverts if one of `ids` represents a non-fungible token and `value` is not 1.
* @dev Reverts if one of `ids` represents a non-fungible token which is not owned by `from`.
* @dev Emits an {IERC1155-TransferBatch} event.
* @param from Address of the current tokens owner.
* @param ids Identifiers of the tokens to burn.
* @param values Amounts of tokens to burn.
*/
function _batchBurnFrom(
address from,
uint256[] memory ids,
uint256[] memory values
) internal virtual {
uint256 length = ids.length;
require(length == values.length, "Inventory: inconsistent arrays");
address sender = _msgSender();
require(_isOperatable(from, sender), "Inventory: non-approved sender");
uint256 nfCollectionId;
uint256 nfCollectionCount;
for (uint256 i; i < length; i++) {
uint256 id = ids[i];
uint256 value = values[i];
if (isFungible(id)) {
_burnFungible(from, id, value);
} else if (id & _NF_TOKEN_MASK != 0) {
_burnNFT(from, id, value, true);
uint256 nextCollectionId = id & _NF_COLLECTION_MASK;
if (nfCollectionId == 0) {
nfCollectionId = nextCollectionId;
nfCollectionCount = 1;
} else {
if (nextCollectionId != nfCollectionId) {
_balances[nfCollectionId][from] -= nfCollectionCount;
_supplies[nfCollectionId] -= nfCollectionCount;
nfCollectionId = nextCollectionId;
nfCollectionCount = 1;
} else {
nfCollectionCount++;
}
}
} else {
revert("Inventory: not a token id");
}
}
if (nfCollectionId != 0) {
_balances[nfCollectionId][from] -= nfCollectionCount;
_supplies[nfCollectionId] -= nfCollectionCount;
}
emit TransferBatch(sender, from, address(0), ids, values);
}
}
// File @animoca/ethereum-contracts-assets_inventory/contracts/token/ERC1155/IERC1155InventoryMintable.sol@v6.0.0
pragma solidity 0.6.8;
/**
* @title ERC-1155 Inventory, additional minting interface
* @dev See https://eips.ethereum.org/EIPS/eip-1155
*/
interface IERC1155InventoryMintable {
/**
* Safely mints some token.
* @dev Reverts if `to` is the zero address.
* @dev Reverts if `id` is not a token.
* @dev Reverts if `id` represents a non-fungible token and `value` is not 1.
* @dev Reverts if `id` represents a non-fungible token which has already been minted.
* @dev Reverts if `id` represents a fungible token and `value` is 0.
* @dev Reverts if `id` represents a fungible token and there is an overflow of supply.
* @dev Reverts if `id` represents a fungible token and there is an overflow of supply.
* @dev Reverts if `to` is a contract and the call to {IERC1155TokenReceiver-onERC1155Received} fails or is refused.
* @dev Emits an {IERC1155-TransferSingle} event.
* @param to Address of the new token owner.
* @param id Identifier of the token to mint.
* @param value Amount of token to mint.
* @param data Optional data to send along to a receiver contract.
*/
function safeMint(address to, uint256 id, uint256 value, bytes calldata data) external;
/**
* Safely mints a batch of tokens.
* @dev Reverts if `ids` and `values` have different lengths.
* @dev Reverts if `to` is the zero address.
* @dev Reverts if one of `ids` is not a token.
* @dev Reverts if one of `ids` represents a non-fungible token and its paired value is not 1.
* @dev Reverts if one of `ids` represents a non-fungible token which has already been minted.
* @dev Reverts if one of `ids` represents a fungible token and its paired value is 0.
* @dev Reverts if one of `ids` represents a fungible token and there is an overflow of supply.
* @dev Reverts if `to` is a contract and the call to {IERC1155TokenReceiver-onERC1155batchReceived} fails or is refused.
* @dev Emits an {IERC1155-TransferBatch} event.
* @param to Address of the new tokens owner.
* @param ids Identifiers of the tokens to mint.
* @param values Amounts of tokens to mint.
* @param data Optional data to send along to a receiver contract.
*/
function safeBatchMint(address to, uint256[] calldata ids, uint256[] calldata values, bytes calldata data) external;
}
// File @animoca/ethereum-contracts-assets_inventory/contracts/token/ERC1155/IERC1155InventoryBurnable.sol@v6.0.0
pragma solidity 0.6.8;
/**
* @title ERC-1155 Inventory additional burning interface
* @dev See https://eips.ethereum.org/EIPS/eip-1155
*/
interface IERC1155InventoryBurnable {
/**
* Burns some token.
* @dev Reverts if the sender is not approved.
* @dev Reverts if `id` does not represent a token.
* @dev Reverts if `id` represents a fungible token and `value` is 0.
* @dev Reverts if `id` represents a fungible token and `value` is higher than `from`'s balance.
* @dev Reverts if `id` represents a non-fungible token and `value` is not 1.
* @dev Reverts if `id` represents a non-fungible token which is not owned by `from`.
* @dev Emits an {IERC1155-TransferSingle} event.
* @param from Address of the current token owner.
* @param id Identifier of the token to burn.
* @param value Amount of token to burn.
*/
function burnFrom(address from, uint256 id, uint256 value) external;
/**
* Burns multiple tokens.
* @dev Reverts if `ids` and `values` have different lengths.
* @dev Reverts if the sender is not approved.
* @dev Reverts if one of `ids` does not represent a token.
* @dev Reverts if one of `ids` represents a fungible token and `value` is 0.
* @dev Reverts if one of `ids` represents a fungible token and `value` is higher than `from`'s balance.
* @dev Reverts if one of `ids` represents a non-fungible token and `value` is not 1.
* @dev Reverts if one of `ids` represents a non-fungible token which is not owned by `from`.
* @dev Emits an {IERC1155-TransferBatch} event.
* @param from Address of the current tokens owner.
* @param ids Identifiers of the tokens to burn.
* @param values Amounts of tokens to burn.
*/
function batchBurnFrom(address from, uint256[] calldata ids, uint256[] calldata values) external;
}
// File @animoca/ethereum-contracts-assets_inventory/contracts/token/ERC1155/IERC1155InventoryCreator.sol@v6.0.0
pragma solidity 0.6.8;
/**
* @title ERC-1155 Inventory, additional creator interface
* @dev See https://eips.ethereum.org/EIPS/eip-1155
*/
interface IERC1155InventoryCreator {
/**
* Returns the creator of a collection, or the zero address if the collection has not been created.
* @dev Reverts if `collectionId` does not represent a collection.
* @param collectionId Identifier of the collection.
* @return The creator of a collection, or the zero address if the collection has not been created.
*/
function creator(uint256 collectionId) external view returns (address);
}
// File @openzeppelin/contracts/access/Ownable.sol@v3.2.0
pragma solidity ^0.6.0;
/**
* @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.
*/
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 () internal {
address msgSender = _msgSender();
_owner = msgSender;
emit OwnershipTransferred(address(0), msgSender);
}
/**
* @dev Returns the address of the current owner.
*/
function owner() public view returns (address) {
return _owner;
}
/**
* @dev Throws if called by any account other than the owner.
*/
modifier onlyOwner() {
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 {
emit OwnershipTransferred(_owner, address(0));
_owner = 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");
emit OwnershipTransferred(_owner, newOwner);
_owner = newOwner;
}
}
// File @animoca/ethereum-contracts-core_library/contracts/utils/types/UInt256ToDecimalString.sol@v3.1.1
pragma solidity 0.6.8;
library UInt256ToDecimalString {
function toDecimalString(uint256 value) internal pure returns (string memory) {
// Inspired by OpenZeppelin's String.toString() implementation - MIT licence
// https://github.com/OpenZeppelin/openzeppelin-contracts/blob/8b10cb38d8fedf34f2d89b0ed604f2dceb76d6a9/contracts/utils/Strings.sol
if (value == 0) {
return "0";
}
uint256 temp = value;
uint256 digits;
while (temp != 0) {
digits++;
temp /= 10;
}
bytes memory buffer = new bytes(digits);
uint256 index = digits - 1;
temp = value;
while (temp != 0) {
buffer[index--] = byte(uint8(48 + temp % 10));
temp /= 10;
}
return string(buffer);
}
}
// File @animoca/ethereum-contracts-assets_inventory/contracts/metadata/BaseMetadataURI.sol@v6.0.0
pragma solidity 0.6.8;
contract BaseMetadataURI is Ownable {
using UInt256ToDecimalString for uint256;
event BaseMetadataURISet(string baseMetadataURI);
string public baseMetadataURI;
function setBaseMetadataURI(string calldata baseMetadataURI_) external onlyOwner {
baseMetadataURI = baseMetadataURI_;
emit BaseMetadataURISet(baseMetadataURI_);
}
function _uri(uint256 id) internal view virtual returns (string memory) {
return string(abi.encodePacked(baseMetadataURI, id.toDecimalString()));
}
}
// File @openzeppelin/contracts/utils/EnumerableSet.sol@v3.2.0
pragma solidity ^0.6.0;
/**
* @dev Library for managing
* https://en.wikipedia.org/wiki/Set_(abstract_data_type)[sets] of primitive
* types.
*
* Sets have the following properties:
*
* - Elements are added, removed, and checked for existence in constant time
* (O(1)).
* - Elements are enumerated in O(n). No guarantees are made on the ordering.
*
* ```
* contract Example {
* // Add the library methods
* using EnumerableSet for EnumerableSet.AddressSet;
*
* // Declare a set state variable
* EnumerableSet.AddressSet private mySet;
* }
* ```
*
* As of v3.0.0, only sets of type `address` (`AddressSet`) and `uint256`
* (`UintSet`) are supported.
*/
library EnumerableSet {
// To implement this library for multiple types with as little code
// repetition as possible, we write it in terms of a generic Set type with
// bytes32 values.
// The Set implementation uses private functions, and user-facing
// implementations (such as AddressSet) are just wrappers around the
// underlying Set.
// This means that we can only create new EnumerableSets for types that fit
// in bytes32.
struct Set {
// Storage of set values
bytes32[] _values;
// Position of the value in the `values` array, plus 1 because index 0
// means a value is not in the set.
mapping (bytes32 => uint256) _indexes;
}
/**
* @dev Add a value to a set. O(1).
*
* Returns true if the value was added to the set, that is if it was not
* already present.
*/
function _add(Set storage set, bytes32 value) private returns (bool) {
if (!_contains(set, value)) {
set._values.push(value);
// The value is stored at length-1, but we add 1 to all indexes
// and use 0 as a sentinel value
set._indexes[value] = set._values.length;
return true;
} else {
return false;
}
}
/**
* @dev Removes a value from a set. O(1).
*
* Returns true if the value was removed from the set, that is if it was
* present.
*/
function _remove(Set storage set, bytes32 value) private returns (bool) {
// We read and store the value's index to prevent multiple reads from the same storage slot
uint256 valueIndex = set._indexes[value];
if (valueIndex != 0) { // Equivalent to contains(set, value)
// To delete an element from the _values array in O(1), we swap the element to delete with the last one in
// the array, and then remove the last element (sometimes called as 'swap and pop').
// This modifies the order of the array, as noted in {at}.
uint256 toDeleteIndex = valueIndex - 1;
uint256 lastIndex = set._values.length - 1;
// When the value to delete is the last one, the swap operation is unnecessary. However, since this occurs
// so rarely, we still do the swap anyway to avoid the gas cost of adding an 'if' statement.
bytes32 lastvalue = set._values[lastIndex];
// Move the last value to the index where the value to delete is
set._values[toDeleteIndex] = lastvalue;
// Update the index for the moved value
set._indexes[lastvalue] = toDeleteIndex + 1; // All indexes are 1-based
// Delete the slot where the moved value was stored
set._values.pop();
// Delete the index for the deleted slot
delete set._indexes[value];
return true;
} else {
return false;
}
}
/**
* @dev Returns true if the value is in the set. O(1).
*/
function _contains(Set storage set, bytes32 value) private view returns (bool) {
return set._indexes[value] != 0;
}
/**
* @dev Returns the number of values on the set. O(1).
*/
function _length(Set storage set) private view returns (uint256) {
return set._values.length;
}
/**
* @dev Returns the value stored at position `index` in the set. O(1).
*
* Note that there are no guarantees on the ordering of values inside the
* array, and it may change when more values are added or removed.
*
* Requirements:
*
* - `index` must be strictly less than {length}.
*/
function _at(Set storage set, uint256 index) private view returns (bytes32) {
require(set._values.length > index, "EnumerableSet: index out of bounds");
return set._values[index];
}
// AddressSet
struct AddressSet {
Set _inner;
}
/**
* @dev Add a value to a set. O(1).
*
* Returns true if the value was added to the set, that is if it was not
* already present.
*/
function add(AddressSet storage set, address value) internal returns (bool) {
return _add(set._inner, bytes32(uint256(value)));
}
/**
* @dev Removes a value from a set. O(1).
*
* Returns true if the value was removed from the set, that is if it was
* present.
*/
function remove(AddressSet storage set, address value) internal returns (bool) {
return _remove(set._inner, bytes32(uint256(value)));
}
/**
* @dev Returns true if the value is in the set. O(1).
*/
function contains(AddressSet storage set, address value) internal view returns (bool) {
return _contains(set._inner, bytes32(uint256(value)));
}
/**
* @dev Returns the number of values in the set. O(1).
*/
function length(AddressSet storage set) internal view returns (uint256) {
return _length(set._inner);
}
/**
* @dev Returns the value stored at position `index` in the set. O(1).
*
* Note that there are no guarantees on the ordering of values inside the
* array, and it may change when more values are added or removed.
*
* Requirements:
*
* - `index` must be strictly less than {length}.
*/
function at(AddressSet storage set, uint256 index) internal view returns (address) {
return address(uint256(_at(set._inner, index)));
}
// UintSet
struct UintSet {
Set _inner;
}
/**
* @dev Add a value to a set. O(1).
*
* Returns true if the value was added to the set, that is if it was not
* already present.
*/
function add(UintSet storage set, uint256 value) internal returns (bool) {
return _add(set._inner, bytes32(value));
}
/**
* @dev Removes a value from a set. O(1).
*
* Returns true if the value was removed from the set, that is if it was
* present.
*/
function remove(UintSet storage set, uint256 value) internal returns (bool) {
return _remove(set._inner, bytes32(value));
}
/**
* @dev Returns true if the value is in the set. O(1).
*/
function contains(UintSet storage set, uint256 value) internal view returns (bool) {
return _contains(set._inner, bytes32(value));
}
/**
* @dev Returns the number of values on the set. O(1).
*/
function length(UintSet storage set) internal view returns (uint256) {
return _length(set._inner);
}
/**
* @dev Returns the value stored at position `index` in the set. O(1).
*
* Note that there are no guarantees on the ordering of values inside the
* array, and it may change when more values are added or removed.
*
* Requirements:
*
* - `index` must be strictly less than {length}.
*/
function at(UintSet storage set, uint256 index) internal view returns (uint256) {
return uint256(_at(set._inner, index));
}
}
// File @openzeppelin/contracts/access/AccessControl.sol@v3.2.0
pragma solidity ^0.6.0;
/**
* @dev Contract module that allows children to implement role-based access
* control mechanisms.
*
* Roles are referred to by their `bytes32` identifier. These should be exposed
* in the external API and be unique. The best way to achieve this is by
* using `public constant` hash digests:
*
* ```
* bytes32 public constant MY_ROLE = keccak256("MY_ROLE");
* ```
*
* Roles can be used to represent a set of permissions. To restrict access to a
* function call, use {hasRole}:
*
* ```
* function foo() public {
* require(hasRole(MY_ROLE, msg.sender));
* ...
* }
* ```
*
* Roles can be granted and revoked dynamically via the {grantRole} and
* {revokeRole} functions. Each role has an associated admin role, and only
* accounts that have a role's admin role can call {grantRole} and {revokeRole}.
*
* By default, the admin role for all roles is `DEFAULT_ADMIN_ROLE`, which means
* that only accounts with this role will be able to grant or revoke other
* roles. More complex role relationships can be created by using
* {_setRoleAdmin}.
*
* WARNING: The `DEFAULT_ADMIN_ROLE` is also its own admin: it has permission to
* grant and revoke this role. Extra precautions should be taken to secure
* accounts that have been granted it.
*/
abstract contract AccessControl is Context {
using EnumerableSet for EnumerableSet.AddressSet;
using Address for address;
struct RoleData {
EnumerableSet.AddressSet members;
bytes32 adminRole;
}
mapping (bytes32 => RoleData) private _roles;
bytes32 public constant DEFAULT_ADMIN_ROLE = 0x00;
/**
* @dev Emitted when `newAdminRole` is set as ``role``'s admin role, replacing `previousAdminRole`
*
* `DEFAULT_ADMIN_ROLE` is the starting admin for all roles, despite
* {RoleAdminChanged} not being emitted signaling this.
*
* _Available since v3.1._
*/
event RoleAdminChanged(bytes32 indexed role, bytes32 indexed previousAdminRole, bytes32 indexed newAdminRole);
/**
* @dev Emitted when `account` is granted `role`.
*
* `sender` is the account that originated the contract call, an admin role
* bearer except when using {_setupRole}.
*/
event RoleGranted(bytes32 indexed role, address indexed account, address indexed sender);
/**
* @dev Emitted when `account` is revoked `role`.
*
* `sender` is the account that originated the contract call:
* - if using `revokeRole`, it is the admin role bearer
* - if using `renounceRole`, it is the role bearer (i.e. `account`)
*/
event RoleRevoked(bytes32 indexed role, address indexed account, address indexed sender);
/**
* @dev Returns `true` if `account` has been granted `role`.
*/
function hasRole(bytes32 role, address account) public view returns (bool) {
return _roles[role].members.contains(account);
}
/**
* @dev Returns the number of accounts that have `role`. Can be used
* together with {getRoleMember} to enumerate all bearers of a role.
*/
function getRoleMemberCount(bytes32 role) public view returns (uint256) {
return _roles[role].members.length();
}
/**
* @dev Returns one of the accounts that have `role`. `index` must be a
* value between 0 and {getRoleMemberCount}, non-inclusive.
*
* Role bearers are not sorted in any particular way, and their ordering may
* change at any point.
*
* WARNING: When using {getRoleMember} and {getRoleMemberCount}, make sure
* you perform all queries on the same block. See the following
* https://forum.openzeppelin.com/t/iterating-over-elements-on-enumerableset-in-openzeppelin-contracts/2296[forum post]
* for more information.
*/
function getRoleMember(bytes32 role, uint256 index) public view returns (address) {
return _roles[role].members.at(index);
}
/**
* @dev Returns the admin role that controls `role`. See {grantRole} and
* {revokeRole}.
*
* To change a role's admin, use {_setRoleAdmin}.
*/
function getRoleAdmin(bytes32 role) public view returns (bytes32) {
return _roles[role].adminRole;
}
/**
* @dev Grants `role` to `account`.
*
* If `account` had not been already granted `role`, emits a {RoleGranted}
* event.
*
* Requirements:
*
* - the caller must have ``role``'s admin role.
*/
function grantRole(bytes32 role, address account) public virtual {
require(hasRole(_roles[role].adminRole, _msgSender()), "AccessControl: sender must be an admin to grant");
_grantRole(role, account);
}
/**
* @dev Revokes `role` from `account`.
*
* If `account` had been granted `role`, emits a {RoleRevoked} event.
*
* Requirements:
*
* - the caller must have ``role``'s admin role.
*/
function revokeRole(bytes32 role, address account) public virtual {
require(hasRole(_roles[role].adminRole, _msgSender()), "AccessControl: sender must be an admin to revoke");
_revokeRole(role, account);
}
/**
* @dev Revokes `role` from the calling account.
*
* Roles are often managed via {grantRole} and {revokeRole}: this function's
* purpose is to provide a mechanism for accounts to lose their privileges
* if they are compromised (such as when a trusted device is misplaced).
*
* If the calling account had been granted `role`, emits a {RoleRevoked}
* event.
*
* Requirements:
*
* - the caller must be `account`.
*/
function renounceRole(bytes32 role, address account) public virtual {
require(account == _msgSender(), "AccessControl: can only renounce roles for self");
_revokeRole(role, account);
}
/**
* @dev Grants `role` to `account`.
*
* If `account` had not been already granted `role`, emits a {RoleGranted}
* event. Note that unlike {grantRole}, this function doesn't perform any
* checks on the calling account.
*
* [WARNING]
* ====
* This function should only be called from the constructor when setting
* up the initial roles for the system.
*
* Using this function in any other way is effectively circumventing the admin
* system imposed by {AccessControl}.
* ====
*/
function _setupRole(bytes32 role, address account) internal virtual {
_grantRole(role, account);
}
/**
* @dev Sets `adminRole` as ``role``'s admin role.
*
* Emits a {RoleAdminChanged} event.
*/
function _setRoleAdmin(bytes32 role, bytes32 adminRole) internal virtual {
emit RoleAdminChanged(role, _roles[role].adminRole, adminRole);
_roles[role].adminRole = adminRole;
}
function _grantRole(bytes32 role, address account) private {
if (_roles[role].members.add(account)) {
emit RoleGranted(role, account, _msgSender());
}
}
function _revokeRole(bytes32 role, address account) private {
if (_roles[role].members.remove(account)) {
emit RoleRevoked(role, account, _msgSender());
}
}
}
// File @animoca/ethereum-contracts-core_library/contracts/access/MinterRole.sol@v3.1.1
pragma solidity 0.6.8;
/**
* Contract module which allows derived contracts access control over token
* minting operations.
*
* This module is used through inheritance. It will make available the modifier
* `onlyMinter`, which can be applied to the minting functions of your contract.
* Those functions will only be accessible to accounts with the minter role
* once the modifer is put in place.
*/
contract MinterRole is AccessControl {
event MinterAdded(address indexed account);
event MinterRemoved(address indexed account);
/**
* Modifier to make a function callable only by accounts with the minter role.
*/
modifier onlyMinter() {
require(isMinter(_msgSender()), "MinterRole: caller does not have the Minter role");
_;
}
/**
* Constructor.
*/
constructor () internal {
_setupRole(DEFAULT_ADMIN_ROLE, _msgSender());
emit MinterAdded(_msgSender());
}
/**
* Validates whether or not the given account has been granted the minter role.
* @param account The account to validate.
* @return True if the account has been granted the minter role, false otherwise.
*/
function isMinter(address account) public view returns (bool) {
require(account != address(0), "MinterRole: address zero cannot be minter");
return hasRole(DEFAULT_ADMIN_ROLE, account);
}
/**
* Grants the minter role to a non-minter.
* @param account The account to grant the minter role to.
*/
function addMinter(address account) public onlyMinter {
require(!isMinter(account), "MinterRole: add an account already minter");
grantRole(DEFAULT_ADMIN_ROLE, account);
emit MinterAdded(account);
}
/**
* Renounces the granted minter role.
*/
function renounceMinter() public onlyMinter {
renounceRole(DEFAULT_ADMIN_ROLE, _msgSender());
emit MinterRemoved(_msgSender());
}
}
// File contracts/solc-0.6/token/ERC1155/GameeVouchers.sol
pragma solidity ^0.6.8;
contract GameeVouchers is ERC1155Inventory, IERC1155InventoryMintable, IERC1155InventoryBurnable, IERC1155InventoryCreator, BaseMetadataURI, MinterRole {
// solhint-disable-next-line const-name-snakecase
string public constant name = "GameeVouchers";
// solhint-disable-next-line const-name-snakecase
string public constant symbol = "GameeVouchers";
// ===================================================================================================
// Admin Public Functions
// ===================================================================================================
/**
* Creates a collection.
* @dev Reverts if `collectionId` does not represent a collection.
* @dev Reverts if `collectionId` has already been created.
* @dev Emits a {IERC1155Inventory-CollectionCreated} event.
* @param collectionId Identifier of the collection.
*/
function createCollection(uint256 collectionId) external onlyOwner {
require(isFungible(collectionId), "GameeVouchers: only fungibles");
_createCollection(collectionId);
}
/**
* @dev See {IERC1155InventoryMintable-safeMint(address,uint256,uint256,bytes)}.
*/
function safeMint(
address to,
uint256 id,
uint256 value,
bytes calldata data
) external override onlyMinter {
require(isFungible(id), "GameeVouchers: only fungibles");
_safeMint(to, id, value, data);
}
/**
* @dev See {IERC1155721InventoryMintable-safeBatchMint(address,uint256[],uint256[],bytes)}.
*/
function safeBatchMint(
address to,
uint256[] calldata ids,
uint256[] calldata values,
bytes calldata data
) external override onlyMinter {
_safeBatchMint(to, ids, values, data);
for (uint256 i; i!= ids.length; ++i) {
require(isFungible(ids[i]), "GameeVouchers: only fungibles");
}
}
// ===================================================================================================
// User Public Functions
// ===================================================================================================
/**
* @dev See {IERC1155InventoryCreator-creator(uint256)}.
*/
function creator(uint256 collectionId) external override view returns(address) {
require(!isNFT(collectionId), "Inventory: not a collection");
return _creators[collectionId];
}
/**
* @dev See {IERC1155InventoryBurnable-burnFrom(address,uint256,uint256)}.
*/
function burnFrom(
address from,
uint256 id,
uint256 value
) external override {
_burnFrom(from, id, value);
}
/**
* @dev See {IERC1155InventoryBurnable-batchBurnFrom(address,uint256[],uint256[])}.
*/
function batchBurnFrom(
address from,
uint256[] calldata ids,
uint256[] calldata values
) external override {
_batchBurnFrom(from, ids, values);
}
// ===================================================================================================
// ERC1155 Internal Functions
// ===================================================================================================
function _uri(uint256 id) internal override(ERC1155InventoryBase, BaseMetadataURI) view returns (string memory) {
return BaseMetadataURI._uri(id);
}
}{
"compilationTarget": {
"GameeVouchers.sol": "GameeVouchers"
},
"evmVersion": "istanbul",
"libraries": {},
"metadata": {
"bytecodeHash": "ipfs"
},
"optimizer": {
"enabled": true,
"runs": 2000
},
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