// SPDX-License-Identifier: MITpragmasolidity ^0.8.0;/**
* @dev Collection of functions related to the address type
*/libraryAddress{
/**
* @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
* ====
*/functionisContract(address account) internalviewreturns (bool) {
// This method relies on extcodesize, which returns 0 for contracts in// construction, since the code is only stored at the end of the// constructor execution.uint256 size;
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].
*/functionsendValue(addresspayable 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._
*/functionfunctionCall(address target, bytesmemory data) internalreturns (bytesmemory) {
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._
*/functionfunctionCall(address target,
bytesmemory data,
stringmemory errorMessage
) internalreturns (bytesmemory) {
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._
*/functionfunctionCallWithValue(address target,
bytesmemory data,
uint256 value
) internalreturns (bytesmemory) {
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._
*/functionfunctionCallWithValue(address target,
bytesmemory data,
uint256 value,
stringmemory errorMessage
) internalreturns (bytesmemory) {
require(address(this).balance>= value, "Address: insufficient balance for call");
require(isContract(target), "Address: call to non-contract");
(bool success, bytesmemory 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._
*/functionfunctionStaticCall(address target, bytesmemory data) internalviewreturns (bytesmemory) {
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._
*/functionfunctionStaticCall(address target,
bytesmemory data,
stringmemory errorMessage
) internalviewreturns (bytesmemory) {
require(isContract(target), "Address: static call to non-contract");
(bool success, bytesmemory 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._
*/functionfunctionDelegateCall(address target, bytesmemory data) internalreturns (bytesmemory) {
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._
*/functionfunctionDelegateCall(address target,
bytesmemory data,
stringmemory errorMessage
) internalreturns (bytesmemory) {
require(isContract(target), "Address: delegate call to non-contract");
(bool success, bytesmemory 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._
*/functionverifyCallResult(bool success,
bytesmemory returndata,
stringmemory errorMessage
) internalpurereturns (bytesmemory) {
if (success) {
return returndata;
} else {
// Look for revert reason and bubble it up if presentif (returndata.length>0) {
// The easiest way to bubble the revert reason is using memory via assemblyassembly {
let returndata_size :=mload(returndata)
revert(add(32, returndata), returndata_size)
}
} else {
revert(errorMessage);
}
}
}
}
Contract Source Code
File 2 of 12: Context.sol
// SPDX-License-Identifier: MITpragmasolidity ^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.
*/abstractcontractContext{
function_msgSender() internalviewvirtualreturns (address) {
returnmsg.sender;
}
function_msgData() internalviewvirtualreturns (bytescalldata) {
returnmsg.data;
}
}
Contract Source Code
File 3 of 12: ERC165.sol
// SPDX-License-Identifier: MITpragmasolidity ^0.8.0;import"./IERC165.sol";
/**
* @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.
*/abstractcontractERC165isIERC165{
/**
* @dev See {IERC165-supportsInterface}.
*/functionsupportsInterface(bytes4 interfaceId) publicviewvirtualoverridereturns (bool) {
return interfaceId ==type(IERC165).interfaceId;
}
}
Contract Source Code
File 4 of 12: ERC721T.sol
// SPDX-License-Identifier: BSD-3-Clausepragmasolidity ^0.8.0;/****************************************
* @author: squeebo_nft *
* @team: GoldenX *
****************************************
* Blimpie-ERC721 provides low-gas *
* mints + transfers *
****************************************/import"./IERC721.sol";
import"./IERC721Receiver.sol";
import"./IERC721Metadata.sol";
import"./Address.sol";
import"./Context.sol";
import"./ERC165.sol";
abstractcontractERC721TisContext, ERC165, IERC721, IERC721Metadata{
usingAddressforaddress;
stringprivate _name;
stringprivate _symbol;
mapping(uint=>address) internal _tokenApprovals;
mapping(address=>mapping(address=>bool)) internal _operatorApprovals;
constructor(stringmemory name_, stringmemory symbol_) {
_name = name_;
_symbol = symbol_;
}
//publicfunctionbalanceOf(address owner) publicviewvirtualoverridereturns(uint);
functionname() externalviewvirtualoverridereturns (stringmemory) {
return _name;
}
functionownerOf(uint tokenId) publicviewvirtualoverridereturns (address);
functionsupportsInterface(bytes4 interfaceId) publicviewvirtualoverride(ERC165, IERC165) returns (bool) {
return
interfaceId ==type(IERC721).interfaceId||
interfaceId ==type(IERC721Metadata).interfaceId||super.supportsInterface(interfaceId);
}
functionsymbol() externalviewvirtualoverridereturns (stringmemory) {
return _symbol;
}
/*
function totalSupply() public view virtual returns (uint) {
return _owners.length - (_offset + _burned);
}
*/functionapprove(address to, uint tokenId) externalvirtualoverride{
address owner = ownerOf(tokenId);
require(to != owner, "ERC721: approval to current owner");
require(
_msgSender() == owner || isApprovedForAll(owner, _msgSender()),
"ERC721: approve caller is not owner nor approved for all"
);
_approve(to, tokenId);
}
functiongetApproved(uint tokenId) publicviewvirtualoverridereturns (address) {
require(_exists(tokenId), "ERC721: approved query for nonexistent token");
return _tokenApprovals[tokenId];
}
functionisApprovedForAll(address owner, address operator) publicviewvirtualoverridereturns (bool) {
return _operatorApprovals[owner][operator];
}
functionsetApprovalForAll(address operator, bool approved) externalvirtualoverride{
require(operator != _msgSender(), "ERC721: approve to caller");
_operatorApprovals[_msgSender()][operator] = approved;
emit ApprovalForAll(_msgSender(), operator, approved);
}
functiontransferFrom(addressfrom,
address to,
uint tokenId
) publicvirtualoverride{
//solhint-disable-next-line max-line-lengthrequire(_isApprovedOrOwner(_msgSender(), tokenId), "ERC721: transfer caller is not owner nor approved");
_transfer(from, to, tokenId);
}
functionsafeTransferFrom(addressfrom,
address to,
uint tokenId
) externalvirtualoverride{
safeTransferFrom(from, to, tokenId, "");
}
functionsafeTransferFrom(addressfrom,
address to,
uint tokenId,
bytesmemory _data
) publicvirtualoverride{
require(_isApprovedOrOwner(_msgSender(), tokenId), "ERC721: transfer caller is not owner nor approved");
_safeTransfer(from, to, tokenId, _data);
}
//internalfunction_approve(address to, uint tokenId) internalvirtual{
_tokenApprovals[tokenId] = to;
emit Approval(ownerOf(tokenId), to, tokenId);
}
function_checkOnERC721Received(addressfrom,
address to,
uint tokenId,
bytesmemory _data
) privatereturns (bool) {
if (to.isContract()) {
try IERC721Receiver(to).onERC721Received(_msgSender(), from, tokenId, _data) returns (bytes4 retval) {
return retval == IERC721Receiver.onERC721Received.selector;
} catch (bytesmemory reason) {
if (reason.length==0) {
revert("ERC721: transfer to non ERC721Receiver implementer");
} else {
assembly {
revert(add(32, reason), mload(reason))
}
}
}
} else {
returntrue;
}
}
function_exists(uint tokenId) internalviewvirtualreturns (bool);
function_isApprovedOrOwner(address spender, uint tokenId) internalviewvirtualreturns (bool) {
require(_exists(tokenId), "ERC721: operator query for nonexistent token");
address owner = ownerOf(tokenId);
return (spender == owner || getApproved(tokenId) == spender || isApprovedForAll(owner, spender));
}
function_safeTransfer(addressfrom,
address to,
uint tokenId,
bytesmemory _data
) internalvirtual{
_transfer(from, to, tokenId);
require(_checkOnERC721Received(from, to, tokenId, _data), "ERC721: transfer to non ERC721Receiver implementer");
}
function_transfer(addressfrom, address to, uint tokenId) internalvirtual;
}
Contract Source Code
File 5 of 12: IERC165.sol
// SPDX-License-Identifier: MITpragmasolidity ^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}.
*/interfaceIERC165{
/**
* @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.
*/functionsupportsInterface(bytes4 interfaceId) externalviewreturns (bool);
}
Contract Source Code
File 6 of 12: IERC721.sol
// SPDX-License-Identifier: MITpragmasolidity ^0.8.0;import"./ERC165.sol";
/**
* @dev Required interface of an ERC721 compliant contract.
*/interfaceIERC721isIERC165{
/**
* @dev Emitted when `tokenId` token is transferred from `from` to `to`.
*/eventTransfer(addressindexedfrom, addressindexed to, uint256indexed tokenId);
/**
* @dev Emitted when `owner` enables `approved` to manage the `tokenId` token.
*/eventApproval(addressindexed owner, addressindexed approved, uint256indexed tokenId);
/**
* @dev Emitted when `owner` enables or disables (`approved`) `operator` to manage all of its assets.
*/eventApprovalForAll(addressindexed owner, addressindexed operator, bool approved);
/**
* @dev Returns the number of tokens in ``owner``'s account.
*/functionbalanceOf(address owner) externalviewreturns (uint256 balance);
/**
* @dev Returns the owner of the `tokenId` token.
*
* Requirements:
*
* - `tokenId` must exist.
*/functionownerOf(uint256 tokenId) externalviewreturns (address owner);
/**
* @dev Safely transfers `tokenId` token from `from` to `to`, checking first that contract recipients
* are aware of the ERC721 protocol to prevent tokens from being forever locked.
*
* Requirements:
*
* - `from` cannot be the zero address.
* - `to` cannot be the zero address.
* - `tokenId` token must exist and be owned by `from`.
* - If the caller is not `from`, it must be have been allowed to move this token by either {approve} or {setApprovalForAll}.
* - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.
*
* Emits a {Transfer} event.
*/functionsafeTransferFrom(addressfrom,
address to,
uint256 tokenId
) external;
/**
* @dev Transfers `tokenId` token from `from` to `to`.
*
* WARNING: Usage of this method is discouraged, use {safeTransferFrom} whenever possible.
*
* Requirements:
*
* - `from` cannot be the zero address.
* - `to` cannot be the zero address.
* - `tokenId` token must be owned by `from`.
* - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}.
*
* Emits a {Transfer} event.
*/functiontransferFrom(addressfrom,
address to,
uint256 tokenId
) external;
/**
* @dev Gives permission to `to` to transfer `tokenId` token to another account.
* The approval is cleared when the token is transferred.
*
* Only a single account can be approved at a time, so approving the zero address clears previous approvals.
*
* Requirements:
*
* - The caller must own the token or be an approved operator.
* - `tokenId` must exist.
*
* Emits an {Approval} event.
*/functionapprove(address to, uint256 tokenId) external;
/**
* @dev Returns the account approved for `tokenId` token.
*
* Requirements:
*
* - `tokenId` must exist.
*/functiongetApproved(uint256 tokenId) externalviewreturns (address operator);
/**
* @dev Approve or remove `operator` as an operator for the caller.
* Operators can call {transferFrom} or {safeTransferFrom} for any token owned by the caller.
*
* Requirements:
*
* - The `operator` cannot be the caller.
*
* Emits an {ApprovalForAll} event.
*/functionsetApprovalForAll(address operator, bool _approved) external;
/**
* @dev Returns if the `operator` is allowed to manage all of the assets of `owner`.
*
* See {setApprovalForAll}
*/functionisApprovedForAll(address owner, address operator) externalviewreturns (bool);
/**
* @dev Safely transfers `tokenId` token from `from` to `to`.
*
* Requirements:
*
* - `from` cannot be the zero address.
* - `to` cannot be the zero address.
* - `tokenId` token must exist and be owned by `from`.
* - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}.
* - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.
*
* Emits a {Transfer} event.
*/functionsafeTransferFrom(addressfrom,
address to,
uint256 tokenId,
bytescalldata data
) external;
}
// SPDX-License-Identifier: MITpragmasolidity ^0.8.0;/**
* @title ERC721 token receiver interface
* @dev Interface for any contract that wants to support safeTransfers
* from ERC721 asset contracts.
*/interfaceIERC721Receiver{
/**
* @dev Whenever an {IERC721} `tokenId` token is transferred to this contract via {IERC721-safeTransferFrom}
* by `operator` from `from`, this function is called.
*
* It must return its Solidity selector to confirm the token transfer.
* If any other value is returned or the interface is not implemented by the recipient, the transfer will be reverted.
*
* The selector can be obtained in Solidity with `IERC721.onERC721Received.selector`.
*/functiononERC721Received(address operator,
addressfrom,
uint256 tokenId,
bytescalldata data
) externalreturns (bytes4);
}
Contract Source Code
File 9 of 12: Ownable.sol
// SPDX-License-Identifier: MITpragmasolidity ^0.8.0;import"./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.
*
* 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.
*/abstractcontractOwnableisContext{
addressprivate _owner;
eventOwnershipTransferred(addressindexed previousOwner, addressindexed newOwner);
/**
* @dev Initializes the contract setting the deployer as the initial owner.
*/constructor() {
_setOwner(_msgSender());
}
/**
* @dev Returns the address of the current owner.
*/functionowner() publicviewvirtualreturns (address) {
return _owner;
}
/**
* @dev Throws if called by any account other than the owner.
*/modifieronlyOwner() {
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.
*/functionrenounceOwnership() publicvirtualonlyOwner{
_setOwner(address(0));
}
/**
* @dev Transfers ownership of the contract to a new account (`newOwner`).
* Can only be called by the current owner.
*/functiontransferOwnership(address newOwner) publicvirtualonlyOwner{
require(newOwner !=address(0), "Ownable: new owner is the zero address");
_setOwner(newOwner);
}
function_setOwner(address newOwner) private{
address oldOwner = _owner;
_owner = newOwner;
emit OwnershipTransferred(oldOwner, newOwner);
}
}
Contract Source Code
File 10 of 12: ReentrancyGuard.sol
// SPDX-License-Identifier: MIT// OpenZeppelin Contracts v4.4.1 (security/ReentrancyGuard.sol)pragmasolidity ^0.8.0;/**
* @dev Contract module that helps prevent reentrant calls to a function.
*
* Inheriting from `ReentrancyGuard` will make the {nonReentrant} modifier
* available, which can be applied to functions to make sure there are no nested
* (reentrant) calls to them.
*
* Note that because there is a single `nonReentrant` guard, functions marked as
* `nonReentrant` may not call one another. This can be worked around by making
* those functions `private`, and then adding `external` `nonReentrant` entry
* points to them.
*
* TIP: If you would like to learn more about reentrancy and alternative ways
* to protect against it, check out our blog post
* https://blog.openzeppelin.com/reentrancy-after-istanbul/[Reentrancy After Istanbul].
*/abstractcontractReentrancyGuard{
// Booleans are more expensive than uint256 or any type that takes up a full// word because each write operation emits an extra SLOAD to first read the// slot's contents, replace the bits taken up by the boolean, and then write// back. This is the compiler's defense against contract upgrades and// pointer aliasing, and it cannot be disabled.// The values being non-zero value makes deployment a bit more expensive,// but in exchange the refund on every call to nonReentrant will be lower in// amount. Since refunds are capped to a percentage of the total// transaction's gas, it is best to keep them low in cases like this one, to// increase the likelihood of the full refund coming into effect.uint256privateconstant _NOT_ENTERED =1;
uint256privateconstant _ENTERED =2;
uint256private _status;
constructor() {
_status = _NOT_ENTERED;
}
/**
* @dev Prevents a contract from calling itself, directly or indirectly.
* Calling a `nonReentrant` function from another `nonReentrant`
* function is not supported. It is possible to prevent this from happening
* by making the `nonReentrant` function external, and making it call a
* `private` function that does the actual work.
*/modifiernonReentrant() {
// On the first call to nonReentrant, _notEntered will be truerequire(_status != _ENTERED, "ReentrancyGuard: reentrant call");
// Any calls to nonReentrant after this point will fail
_status = _ENTERED;
_;
// By storing the original value once again, a refund is triggered (see// https://eips.ethereum.org/EIPS/eip-2200)
_status = _NOT_ENTERED;
}
}
Contract Source Code
File 11 of 12: SmallGraffiti.sol
// SPDX-License-Identifier: MITpragmasolidity ^0.8.0;import"./Ownable.sol";
import"./ERC721T.sol";
import"./Strings.sol";
import"./ReentrancyGuard.sol";
contractSmallGraffitiisERC721T, Ownable, ReentrancyGuard{
usingStringsforuint;
/**
* @dev Data structure of Moon
*/structMoon {
address owner;
bool celestialType;
}
uintpublic MAX_SUPPLY =5555;
uintpublic PRICE =0ether;
uintpublic MAX_QTY =2;
Moon[] public moons;
boolpublic isMintActive =false;
mapping(address=>uint) private minted;
mapping(address=>uint) private _balances;
stringprivate _tokenURIPrefix="ipfs://Qmd82H1E7sBqvREn75TH64VnMPXeyr6H3XusSQ9gL61ctE/";
stringprivate _tokenURISuffix =".json";
constructor()
ERC721T("Small Graffiti", "SG"){
}
/**
* @dev Returns the number of tokens in ``owners``'s account.
*/functionbalanceOf(address account) publicviewoverridereturns (uint) {
require(account !=address(0), "Graffiti: balance query for the zero address");
return _balances[account];
}
/**
* @dev Returns the bool of tokens if``owner``'s account contains the tokenIds.
*/functionisOwnerOf(address account, uint[] calldata tokenIds ) externalviewreturns(bool){
for(uint i; i < tokenIds.length; ++i ){
if( moons[ tokenIds[i] ].owner != account )
returnfalse;
}
returntrue;
}
/**
* @dev Returns the owner of the `tokenId` token.
*
*/functionownerOf(uint tokenId ) publicoverrideviewreturns(address owner_ ){
address owner = moons[tokenId-1].owner;
require(owner !=address(0), "Graffiti: query for nonexistent token");
return owner;
}
/**
* @dev Returns a token ID at a given `index` of all the tokens stored by the contract.
* Use along with {totalSupply} to enumerate all tokens.
*/functiontokenByIndex(uint index) externalviewreturns (uint) {
require(index <= totalSupply(), "Graffiti: global index out of bounds");
return index;
}
/**
* @dev Returns a token ID owned by `owner` at a given `index` of its token list.
* Use along with {balanceOf} to enumerate all of ``owner``'s tokens.
*/functiontokenOfOwnerByIndex(address owner, uint index) publicviewreturns (uint tokenId) {
uint count;
for( uint i; i <= moons.length; ++i ){
if( owner == moons[i].owner ){
if( count == index )
return i+1;
else++count;
}
}
revert("ERC721Enumerable: owner index out of bounds");
}
/**
* @dev Returns the Uniform Resource Identifier (URI) for `tokenId` token.
*/functiontokenURI(uint tokenId) externalviewoverridereturns (stringmemory) {
require(_exists(tokenId), "Graffiti: URI query for nonexistent token");
returnstring(abi.encodePacked(_tokenURIPrefix, tokenId.toString(), _tokenURISuffix));
}
/**
* @dev Returns the total amount of tokens stored by the contract.
*/functiontotalSupply() publicviewreturns(uint totalSupply_ ){
return moons.length;
}
/**
* @dev Returns the list of tokenIds stored by the owner's account.
*/functionwalletOfOwner(address account ) externalviewreturns(uint[] memory){
uint quantity = balanceOf( account );
uint[] memory wallet =newuint[]( quantity );
for( uint i; i < quantity; ++i ){
wallet[i] = tokenOfOwnerByIndex( account, i );
}
return wallet;
}
/**
* @dev mints token based on the number of qty specified.
*/functionmint(uint quantity ) externalpayablenonReentrant{
require(isMintActive ==true,"Graffiti: Minting needs to be enabled.");
require(quantity + minted[msg.sender] <= MAX_QTY,"Graffiti:Quantity must be less than or equal MAX_QTY");
require( msg.value>= PRICE , "Graffiti: Ether sent is not correct" );
uint supply = totalSupply();
require( supply + quantity <= MAX_SUPPLY, "Graffiti: Mint/order exceeds supply" );
minted[msg.sender] += quantity;
for(uint i; i < quantity; i++){
uint tokenId =++supply ;
_mint( msg.sender, tokenId );
}
}
/**
* @dev Returns the balance amount of the Contract address.
*/functiongetBalanceofContract() externalviewreturns (uint256) {
returnaddress(this).balance;
}
/**
* @dev Withdraws an amount from the contract balance.
*/functionwithdraw(uint256 amount_) publiconlyOwner{
require(address(this).balance>= amount_, "Address: insufficient balance");
// This will payout the owner 100% of the contract balance.// Do not remove this otherwise you will not be able to withdraw the funds.// =============================================================================
(bool os, ) =payable(owner()).call{value: amount_}("");
require(os);
// =============================================================================
}
/**
* @dev Allows team to mint the token without restriction.
*/functionteam_mint(uint[] calldata quantity, address[] calldata recipient) publiconlyOwner{
require(quantity.length== recipient.length, "Graffiti: Must provide equal quantities and recipients" );
uint totalQuantity;
uint supply = totalSupply();
for(uint i; i < quantity.length; ++i){
totalQuantity += quantity[i];
}
require( supply + totalQuantity < MAX_SUPPLY, "Graffiti: Mint/order exceeds supply" );
for(uint i; i < recipient.length; ++i){
for(uint j; j < quantity[i]; ++j){
uint tokenId =++supply;
_mint( recipient[i], tokenId);
}
}
}
/**
* @dev Owner/Delegate sets the Minting flag.
*/functionsetMintingActive(bool mintActive_) externalonlyOwner{
require( isMintActive != mintActive_ , "Graffiti: New value matches old" );
isMintActive = mintActive_;
}
/**
* @dev Owner/Delegates sets the BaseURI of IPFS.
*/functionsetBaseURI(stringcalldata prefix, stringcalldata suffix) externalonlyOwner{
_tokenURIPrefix = prefix;
_tokenURISuffix = suffix;
}
/**
* @dev Owner/Delegate sets the Max supply of the token.
*/functionsetMaxSupply(uint maxSupply) externalonlyOwner{
require( MAX_SUPPLY != maxSupply, "Graffiti: New value matches old" );
require( maxSupply >= totalSupply(), "Graffiti: Specified supply is lower than current balance" );
MAX_SUPPLY = maxSupply;
}
/**
* @dev Owner/Delegate sets the Max. qty
*/functionsetMaxQty(uint maxQty) externalonlyOwner{
require( MAX_QTY != maxQty, "Graffiti: New value matches old" );
MAX_QTY = maxQty;
}
/**
* @dev Owner/Delegate sets the minting price.
*/functionsetPrice(uint price) externalonlyOwner{
require( PRICE != price, "Graffiti: New value matches old" );
PRICE = price;
}
/**
* @dev increment and decrement balances based on address from and to.
*/function_beforeTokenTransfer(addressfrom, address to) internal{
if( from!=address(0) )
--_balances[ from ];
if( to !=address(0) )
++_balances[ to ];
}
/**
* @dev returns bool if the tokenId exist.
*/function_exists(uint tokenId) internalviewoverridereturns (bool) {
return tokenId>0&& tokenId <= moons.length&& moons[tokenId-1].owner !=address(0);
}
/**
* @dev mints token based address and tokenId
*/function_mint(address to, uint tokenId) internal{
_beforeTokenTransfer(address(0), to);
moons.push(Moon(to,false));
emit Transfer(address(0), to, tokenId);
}
/**
* @dev update the moon type.
*/functionupdateMoontype(bool moonType, uint[] calldata tokenIds ) externalonlyOwner{
//update logic to update the MoonTypefor(uint i=0; i < tokenIds.length; i++) {
require(_exists(tokenIds[i]), "Graffiti: TokenId not exist");
moons[tokenIds[i]-1].celestialType = moonType;
}
}
/**
* @dev returns the moontypes based on the tokenIds.
*/functiongetMoonType(uint[] calldata tokenIds) externalviewreturns(bool[] memory moonTypes) {
// return moontype true/falsebool[] memory _moonTypes =newbool[](tokenIds.length);
for(uint i; i < tokenIds.length; i++) {
_moonTypes[i] = moons[tokenIds[i]-1].celestialType;
}
return _moonTypes;
}
/**
* @dev transfer tokenId to other address.
*/function_transfer(addressfrom, address to, uint tokenId) internaloverride{
require(moons[tokenId-1].owner ==from, "Graffiti: transfer of token that is not owned");
// Clear approvals from the previous owner
_approve(address(0), tokenId);
_beforeTokenTransfer(from, to);
moons[tokenId-1].owner = to;
emit Transfer(from, to, tokenId);
}
}
Contract Source Code
File 12 of 12: Strings.sol
// SPDX-License-Identifier: MIT// OpenZeppelin Contracts v4.4.1 (utils/Strings.sol)pragmasolidity ^0.8.0;/**
* @dev String operations.
*/libraryStrings{
bytes16privateconstant _HEX_SYMBOLS ="0123456789abcdef";
/**
* @dev Converts a `uint256` to its ASCII `string` decimal representation.
*/functiontoString(uint256 value) internalpurereturns (stringmemory) {
// Inspired by OraclizeAPI's implementation - MIT licence// https://github.com/oraclize/ethereum-api/blob/b42146b063c7d6ee1358846c198246239e9360e8/oraclizeAPI_0.4.25.solif (value ==0) {
return"0";
}
uint256 temp = value;
uint256 digits;
while (temp !=0) {
digits++;
temp /=10;
}
bytesmemory buffer =newbytes(digits);
while (value !=0) {
digits -=1;
buffer[digits] =bytes1(uint8(48+uint256(value %10)));
value /=10;
}
returnstring(buffer);
}
/**
* @dev Converts a `uint256` to its ASCII `string` hexadecimal representation.
*/functiontoHexString(uint256 value) internalpurereturns (stringmemory) {
if (value ==0) {
return"0x00";
}
uint256 temp = value;
uint256 length =0;
while (temp !=0) {
length++;
temp >>=8;
}
return toHexString(value, length);
}
/**
* @dev Converts a `uint256` to its ASCII `string` hexadecimal representation with fixed length.
*/functiontoHexString(uint256 value, uint256 length) internalpurereturns (stringmemory) {
bytesmemory buffer =newbytes(2* length +2);
buffer[0] ="0";
buffer[1] ="x";
for (uint256 i =2* length +1; i >1; --i) {
buffer[i] = _HEX_SYMBOLS[value &0xf];
value >>=4;
}
require(value ==0, "Strings: hex length insufficient");
returnstring(buffer);
}
}