git.delta.rocks / unique-network / refs/commits / afa26fc3182d

1// Copyright 2019-2022 Unique Network (Gibraltar) Ltd.2// This file is part of Unique Network.34// Unique Network is free software: you can redistribute it and/or modify5// it under the terms of the GNU General Public License as published by6// the Free Software Foundation, either version 3 of the License, or7// (at your option) any later version.89// Unique Network is distributed in the hope that it will be useful,10// but WITHOUT ANY WARRANTY; without even the implied warranty of11// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the12// GNU General Public License for more details.1314// You should have received a copy of the GNU General Public License15// along with Unique Network. If not, see <http://www.gnu.org/licenses/>.1617//! # Nonfungible Pallet EVM API18//!19//! Provides ERC-721 standart support implementation and EVM API for unique extensions for Nonfungible Pallet.20//! Method implementations are mostly doing parameter conversion and calling Nonfungible Pallet methods.2122extern crate alloc;23use core::{24	char::{REPLACEMENT_CHARACTER, decode_utf16},25	convert::TryInto,26};27use evm_coder::{ToLog, execution::*, generate_stubgen, solidity, solidity_interface, types::*, weight};28use frame_support::BoundedVec;29use up_data_structs::{30	TokenId, PropertyPermission, PropertyKeyPermission, Property, CollectionId, PropertyKey,31	CollectionPropertiesVec,32};33use pallet_evm_coder_substrate::dispatch_to_evm;34use sp_std::vec::Vec;35use pallet_common::{36	erc::{CommonEvmHandler, PrecompileResult, CollectionCall, static_property::key},37	CollectionHandle, CollectionPropertyPermissions,38	eth::convert_tuple_to_cross_account,39};40use pallet_evm::{account::CrossAccountId, PrecompileHandle};41use pallet_evm_coder_substrate::call;42use pallet_structure::{SelfWeightOf as StructureWeight, weights::WeightInfo as _};4344use crate::{45	AccountBalance, Config, CreateItemData, NonfungibleHandle, Pallet, TokenData, TokensMinted,46	SelfWeightOf, weights::WeightInfo, TokenProperties,47};4849/// @title A contract that allows to set and delete token properties and change token property permissions.50#[solidity_interface(name = TokenProperties)]51impl<T: Config> NonfungibleHandle<T> {52	/// @notice Set permissions for token property.53	/// @dev Throws error if `msg.sender` is not admin or owner of the collection.54	/// @param key Property key.55	/// @param isMutable Permission to mutate property.56	/// @param collectionAdmin Permission to mutate property by collection admin if property is mutable.57	/// @param tokenOwner Permission to mutate property by token owner if property is mutable.58	fn set_token_property_permission(59		&mut self,60		caller: caller,61		key: string,62		is_mutable: bool,63		collection_admin: bool,64		token_owner: bool,65	) -> Result<()> {66		let caller = T::CrossAccountId::from_eth(caller);67		<Pallet<T>>::set_property_permission(68			self,69			&caller,70			PropertyKeyPermission {71				key: <Vec<u8>>::from(key)72					.try_into()73					.map_err(|_| "too long key")?,74				permission: PropertyPermission {75					mutable: is_mutable,76					collection_admin,77					token_owner,78				},79			},80		)81		.map_err(dispatch_to_evm::<T>)82	}8384	/// @notice Set token property value.85	/// @dev Throws error if `msg.sender` has no permission to edit the property.86	/// @param tokenId ID of the token.87	/// @param key Property key.88	/// @param value Property value.89	fn set_property(90		&mut self,91		caller: caller,92		token_id: uint256,93		key: string,94		value: bytes,95	) -> Result<()> {96		let caller = T::CrossAccountId::from_eth(caller);97		let token_id: u32 = token_id.try_into().map_err(|_| "token id overflow")?;98		let key = <Vec<u8>>::from(key)99			.try_into()100			.map_err(|_| "key too long")?;101		let value = value.0.try_into().map_err(|_| "value too long")?;102103		let nesting_budget = self104			.recorder105			.weight_calls_budget(<StructureWeight<T>>::find_parent());106107		<Pallet<T>>::set_token_property(108			self,109			&caller,110			TokenId(token_id),111			Property { key, value },112			&nesting_budget,113		)114		.map_err(dispatch_to_evm::<T>)115	}116117	/// @notice Delete token property value.118	/// @dev Throws error if `msg.sender` has no permission to edit the property.119	/// @param tokenId ID of the token.120	/// @param key Property key.121	fn delete_property(&mut self, token_id: uint256, caller: caller, key: string) -> Result<()> {122		let caller = T::CrossAccountId::from_eth(caller);123		let token_id: u32 = token_id.try_into().map_err(|_| "token id overflow")?;124		let key = <Vec<u8>>::from(key)125			.try_into()126			.map_err(|_| "key too long")?;127128		let nesting_budget = self129			.recorder130			.weight_calls_budget(<StructureWeight<T>>::find_parent());131132		<Pallet<T>>::delete_token_property(self, &caller, TokenId(token_id), key, &nesting_budget)133			.map_err(dispatch_to_evm::<T>)134	}135136	/// @notice Get token property value.137	/// @dev Throws error if key not found138	/// @param tokenId ID of the token.139	/// @param key Property key.140	/// @return Property value bytes141	fn property(&self, token_id: uint256, key: string) -> Result<bytes> {142		let token_id: u32 = token_id.try_into().map_err(|_| "token id overflow")?;143		let key = <Vec<u8>>::from(key)144			.try_into()145			.map_err(|_| "key too long")?;146147		let props = <TokenProperties<T>>::get((self.id, token_id));148		let prop = props.get(&key).ok_or("key not found")?;149150		Ok(prop.to_vec().into())151	}152}153154#[derive(ToLog)]155pub enum ERC721Events {156	/// @dev This emits when ownership of any NFT changes by any mechanism.157	///  This event emits when NFTs are created (`from` == 0) and destroyed158	///  (`to` == 0). Exception: during contract creation, any number of NFTs159	///  may be created and assigned without emitting Transfer. At the time of160	///  any transfer, the approved address for that NFT (if any) is reset to none.161	Transfer {162		#[indexed]163		from: address,164		#[indexed]165		to: address,166		#[indexed]167		token_id: uint256,168	},169	/// @dev This emits when the approved address for an NFT is changed or170	///  reaffirmed. The zero address indicates there is no approved address.171	///  When a Transfer event emits, this also indicates that the approved172	///  address for that NFT (if any) is reset to none.173	Approval {174		#[indexed]175		owner: address,176		#[indexed]177		approved: address,178		#[indexed]179		token_id: uint256,180	},181	/// @dev This emits when an operator is enabled or disabled for an owner.182	///  The operator can manage all NFTs of the owner.183	#[allow(dead_code)]184	ApprovalForAll {185		#[indexed]186		owner: address,187		#[indexed]188		operator: address,189		approved: bool,190	},191}192193#[derive(ToLog)]194pub enum ERC721UniqueMintableEvents {195	#[allow(dead_code)]196	MintingFinished {},197}198199/// @title ERC-721 Non-Fungible Token Standard, optional metadata extension200/// @dev See https://eips.ethereum.org/EIPS/eip-721201#[solidity_interface(name = ERC721Metadata, expect_selector = 0x5b5e139f)]202impl<T: Config> NonfungibleHandle<T>203where204	T::AccountId: From<[u8; 32]>,205{206	/// @notice A descriptive name for a collection of NFTs in this contract207	/// @dev real implementation of this function lies in `ERC721UniqueExtensions`208	#[solidity(hide, rename_selector = "name")]209	fn name_proxy(&self) -> Result<string> {210		self.name()211	}212213	/// @notice An abbreviated name for NFTs in this contract214	/// @dev real implementation of this function lies in `ERC721UniqueExtensions`215	#[solidity(hide, rename_selector = "symbol")]216	fn symbol_proxy(&self) -> Result<string> {217		self.symbol()218	}219220	/// @notice A distinct Uniform Resource Identifier (URI) for a given asset.221	///222	/// @dev If the token has a `url` property and it is not empty, it is returned.223	///  Else If the collection does not have a property with key `schemaName` or its value is not equal to `ERC721Metadata`, it return an error `tokenURI not set`.224	///  If the collection property `baseURI` is empty or absent, return "" (empty string)225	///  otherwise, if token property `suffix` present and is non-empty, return concatenation of baseURI and suffix226	///  otherwise, return concatenation of `baseURI` and stringified token id (decimal stringifying, without paddings).227	///228	/// @return token's const_metadata229	#[solidity(rename_selector = "tokenURI")]230	fn token_uri(&self, token_id: uint256) -> Result<string> {231		let token_id_u32: u32 = token_id.try_into().map_err(|_| "token id overflow")?;232233		match get_token_property(self, token_id_u32, &key::url()).as_deref() {234			Err(_) | Ok("") => (),235			Ok(url) => {236				return Ok(url.into());237			}238		};239240		let base_uri =241			pallet_common::Pallet::<T>::get_collection_property(self.id, &key::base_uri())242				.map(BoundedVec::into_inner)243				.map(string::from_utf8)244				.transpose()245				.map_err(|e| {246					Error::Revert(alloc::format!(247						"Can not convert value \"baseURI\" to string with error \"{}\"",248						e249					))250				})?;251252		let base_uri = match base_uri.as_deref() {253			None | Some("") => {254				return Ok("".into());255			}256			Some(base_uri) => base_uri.into(),257		};258259		Ok(260			match get_token_property(self, token_id_u32, &key::suffix()).as_deref() {261				Err(_) | Ok("") => base_uri,262				Ok(suffix) => base_uri + suffix,263			},264		)265	}266}267268/// @title ERC-721 Non-Fungible Token Standard, optional enumeration extension269/// @dev See https://eips.ethereum.org/EIPS/eip-721270#[solidity_interface(name = ERC721Enumerable, expect_selector = 0x780e9d63)]271impl<T: Config> NonfungibleHandle<T> {272	/// @notice Enumerate valid NFTs273	/// @param index A counter less than `totalSupply()`274	/// @return The token identifier for the `index`th NFT,275	///  (sort order not specified)276	fn token_by_index(&self, index: uint256) -> Result<uint256> {277		Ok(index)278	}279280	/// @dev Not implemented281	fn token_of_owner_by_index(&self, _owner: address, _index: uint256) -> Result<uint256> {282		// TODO: Not implemetable283		Err("not implemented".into())284	}285286	/// @notice Count NFTs tracked by this contract287	/// @return A count of valid NFTs tracked by this contract, where each one of288	///  them has an assigned and queryable owner not equal to the zero address289	fn total_supply(&self) -> Result<uint256> {290		self.consume_store_reads(1)?;291		Ok(<Pallet<T>>::total_supply(self).into())292	}293}294295/// @title ERC-721 Non-Fungible Token Standard296/// @dev See https://github.com/ethereum/EIPs/blob/master/EIPS/eip-721.md297#[solidity_interface(name = ERC721, events(ERC721Events), expect_selector = 0x80ac58cd)]298impl<T: Config> NonfungibleHandle<T> {299	/// @notice Count all NFTs assigned to an owner300	/// @dev NFTs assigned to the zero address are considered invalid, and this301	///  function throws for queries about the zero address.302	/// @param owner An address for whom to query the balance303	/// @return The number of NFTs owned by `owner`, possibly zero304	fn balance_of(&self, owner: address) -> Result<uint256> {305		self.consume_store_reads(1)?;306		let owner = T::CrossAccountId::from_eth(owner);307		let balance = <AccountBalance<T>>::get((self.id, owner));308		Ok(balance.into())309	}310	/// @notice Find the owner of an NFT311	/// @dev NFTs assigned to zero address are considered invalid, and queries312	///  about them do throw.313	/// @param tokenId The identifier for an NFT314	/// @return The address of the owner of the NFT315	fn owner_of(&self, token_id: uint256) -> Result<address> {316		self.consume_store_reads(1)?;317		let token: TokenId = token_id.try_into()?;318		Ok(*<TokenData<T>>::get((self.id, token))319			.ok_or("token not found")?320			.owner321			.as_eth())322	}323	/// @dev Not implemented324	#[solidity(rename_selector = "safeTransferFrom")]325	fn safe_transfer_from_with_data(326		&mut self,327		_from: address,328		_to: address,329		_token_id: uint256,330		_data: bytes,331	) -> Result<void> {332		// TODO: Not implemetable333		Err("not implemented".into())334	}335	/// @dev Not implemented336	fn safe_transfer_from(337		&mut self,338		_from: address,339		_to: address,340		_token_id: uint256,341	) -> Result<void> {342		// TODO: Not implemetable343		Err("not implemented".into())344	}345346	/// @notice Transfer ownership of an NFT -- THE CALLER IS RESPONSIBLE347	///  TO CONFIRM THAT `to` IS CAPABLE OF RECEIVING NFTS OR ELSE348	///  THEY MAY BE PERMANENTLY LOST349	/// @dev Throws unless `msg.sender` is the current owner or an authorized350	///  operator for this NFT. Throws if `from` is not the current owner. Throws351	///  if `to` is the zero address. Throws if `tokenId` is not a valid NFT.352	/// @param from The current owner of the NFT353	/// @param to The new owner354	/// @param tokenId The NFT to transfer355	#[weight(<SelfWeightOf<T>>::transfer_from())]356	fn transfer_from(357		&mut self,358		caller: caller,359		from: address,360		to: address,361		token_id: uint256,362	) -> Result<void> {363		let caller = T::CrossAccountId::from_eth(caller);364		let from = T::CrossAccountId::from_eth(from);365		let to = T::CrossAccountId::from_eth(to);366		let token = token_id.try_into()?;367		let budget = self368			.recorder369			.weight_calls_budget(<StructureWeight<T>>::find_parent());370371		<Pallet<T>>::transfer_from(self, &caller, &from, &to, token, &budget)372			.map_err(dispatch_to_evm::<T>)?;373		Ok(())374	}375376	/// @notice Set or reaffirm the approved address for an NFT377	/// @dev The zero address indicates there is no approved address.378	/// @dev Throws unless `msg.sender` is the current NFT owner, or an authorized379	///  operator of the current owner.380	/// @param approved The new approved NFT controller381	/// @param tokenId The NFT to approve382	#[weight(<SelfWeightOf<T>>::approve())]383	fn approve(&mut self, caller: caller, approved: address, token_id: uint256) -> Result<void> {384		let caller = T::CrossAccountId::from_eth(caller);385		let approved = T::CrossAccountId::from_eth(approved);386		let token = token_id.try_into()?;387388		<Pallet<T>>::set_allowance(self, &caller, token, Some(&approved))389			.map_err(dispatch_to_evm::<T>)?;390		Ok(())391	}392393	/// @dev Not implemented394	fn set_approval_for_all(395		&mut self,396		_caller: caller,397		_operator: address,398		_approved: bool,399	) -> Result<void> {400		// TODO: Not implemetable401		Err("not implemented".into())402	}403404	/// @dev Not implemented405	fn get_approved(&self, _token_id: uint256) -> Result<address> {406		// TODO: Not implemetable407		Err("not implemented".into())408	}409410	/// @dev Not implemented411	fn is_approved_for_all(&self, _owner: address, _operator: address) -> Result<address> {412		// TODO: Not implemetable413		Err("not implemented".into())414	}415}416417/// @title ERC721 Token that can be irreversibly burned (destroyed).418#[solidity_interface(name = ERC721Burnable)]419impl<T: Config> NonfungibleHandle<T> {420	/// @notice Burns a specific ERC721 token.421	/// @dev Throws unless `msg.sender` is the current NFT owner, or an authorized422	///  operator of the current owner.423	/// @param tokenId The NFT to approve424	#[weight(<SelfWeightOf<T>>::burn_item())]425	fn burn(&mut self, caller: caller, token_id: uint256) -> Result<void> {426		let caller = T::CrossAccountId::from_eth(caller);427		let token = token_id.try_into()?;428429		<Pallet<T>>::burn(self, &caller, token).map_err(dispatch_to_evm::<T>)?;430		Ok(())431	}432}433434/// @title ERC721 minting logic.435#[solidity_interface(name = ERC721UniqueMintable, events(ERC721UniqueMintableEvents))]436impl<T: Config> NonfungibleHandle<T> {437	fn minting_finished(&self) -> Result<bool> {438		Ok(false)439	}440441	/// @notice Function to mint token.442	/// @param to The new owner443	/// @return uint256 The id of the newly minted token444	#[weight(<SelfWeightOf<T>>::create_item())]445	fn mint(&mut self, caller: caller, to: address) -> Result<uint256> {446		let token_id: uint256 = <TokensMinted<T>>::get(self.id)447			.checked_add(1)448			.ok_or("item id overflow")?449			.into();450		self.mint_check_id(caller, to, token_id)?;451		Ok(token_id)452	}453454	/// @notice Function to mint token.455	/// @dev `tokenId` should be obtained with `nextTokenId` method,456	///  unlike standard, you can't specify it manually457	/// @param to The new owner458	/// @param tokenId ID of the minted NFT459	#[solidity(hide, rename_selector = "mint")]460	#[weight(<SelfWeightOf<T>>::create_item())]461	fn mint_check_id(&mut self, caller: caller, to: address, token_id: uint256) -> Result<bool> {462		let caller = T::CrossAccountId::from_eth(caller);463		let to = T::CrossAccountId::from_eth(to);464		let token_id: u32 = token_id.try_into()?;465		let budget = self466			.recorder467			.weight_calls_budget(<StructureWeight<T>>::find_parent());468469		if <TokensMinted<T>>::get(self.id)470			.checked_add(1)471			.ok_or("item id overflow")?472			!= token_id473		{474			return Err("item id should be next".into());475		}476477		<Pallet<T>>::create_item(478			self,479			&caller,480			CreateItemData::<T> {481				properties: BoundedVec::default(),482				owner: to,483			},484			&budget,485		)486		.map_err(dispatch_to_evm::<T>)?;487488		Ok(true)489	}490491	/// @notice Function to mint token with the given tokenUri.492	/// @param to The new owner493	/// @param tokenUri Token URI that would be stored in the NFT properties494	/// @return uint256 The id of the newly minted token495	#[solidity(rename_selector = "mintWithTokenURI")]496	#[weight(<SelfWeightOf<T>>::create_item())]497	fn mint_with_token_uri(498		&mut self,499		caller: caller,500		to: address,501		token_uri: string,502	) -> Result<uint256> {503		let token_id: uint256 = <TokensMinted<T>>::get(self.id)504			.checked_add(1)505			.ok_or("item id overflow")?506			.into();507		self.mint_with_token_uri_check_id(caller, to, token_id, token_uri)?;508		Ok(token_id)509	}510511	/// @notice Function to mint token with the given tokenUri.512	/// @dev `tokenId` should be obtained with `nextTokenId` method,513	///  unlike standard, you can't specify it manually514	/// @param to The new owner515	/// @param tokenId ID of the minted NFT516	/// @param tokenUri Token URI that would be stored in the NFT properties517	#[solidity(hide, rename_selector = "mintWithTokenURI")]518	#[weight(<SelfWeightOf<T>>::create_item())]519	fn mint_with_token_uri_check_id(520		&mut self,521		caller: caller,522		to: address,523		token_id: uint256,524		token_uri: string,525	) -> Result<bool> {526		let key = key::url();527		let permission = get_token_permission::<T>(self.id, &key)?;528		if !permission.collection_admin {529			return Err("Operation is not allowed".into());530		}531532		let caller = T::CrossAccountId::from_eth(caller);533		let to = T::CrossAccountId::from_eth(to);534		let token_id: u32 = token_id.try_into().map_err(|_| "amount overflow")?;535		let budget = self536			.recorder537			.weight_calls_budget(<StructureWeight<T>>::find_parent());538539		if <TokensMinted<T>>::get(self.id)540			.checked_add(1)541			.ok_or("item id overflow")?542			!= token_id543		{544			return Err("item id should be next".into());545		}546547		let mut properties = CollectionPropertiesVec::default();548		properties549			.try_push(Property {550				key,551				value: token_uri552					.into_bytes()553					.try_into()554					.map_err(|_| "token uri is too long")?,555			})556			.map_err(|e| Error::Revert(alloc::format!("Can't add property: {:?}", e)))?;557558		<Pallet<T>>::create_item(559			self,560			&caller,561			CreateItemData::<T> {562				properties,563				owner: to,564			},565			&budget,566		)567		.map_err(dispatch_to_evm::<T>)?;568		Ok(true)569	}570571	/// @dev Not implemented572	fn finish_minting(&mut self, _caller: caller) -> Result<bool> {573		Err("not implementable".into())574	}575}576577fn get_token_property<T: Config>(578	collection: &CollectionHandle<T>,579	token_id: u32,580	key: &up_data_structs::PropertyKey,581) -> Result<string> {582	collection.consume_store_reads(1)?;583	let properties = <TokenProperties<T>>::try_get((collection.id, token_id))584		.map_err(|_| Error::Revert("Token properties not found".into()))?;585	if let Some(property) = properties.get(key) {586		return Ok(string::from_utf8_lossy(property).into());587	}588589	Err("Property tokenURI not found".into())590}591592fn get_token_permission<T: Config>(593	collection_id: CollectionId,594	key: &PropertyKey,595) -> Result<PropertyPermission> {596	let token_property_permissions = CollectionPropertyPermissions::<T>::try_get(collection_id)597		.map_err(|_| Error::Revert("No permissions for collection".into()))?;598	let a = token_property_permissions599		.get(key)600		.map(Clone::clone)601		.ok_or_else(|| {602			let key = string::from_utf8(key.clone().into_inner()).unwrap_or_default();603			Error::Revert(alloc::format!("No permission for key {}", key))604		})?;605	Ok(a)606}607608/// @title Unique extensions for ERC721.609#[solidity_interface(name = ERC721UniqueExtensions)]610impl<T: Config> NonfungibleHandle<T>611where612	T::AccountId: From<[u8; 32]>,613{614	/// @notice A descriptive name for a collection of NFTs in this contract615	fn name(&self) -> Result<string> {616		Ok(decode_utf16(self.name.iter().copied())617			.map(|r| r.unwrap_or(REPLACEMENT_CHARACTER))618			.collect::<string>())619	}620621	/// @notice An abbreviated name for NFTs in this contract622	fn symbol(&self) -> Result<string> {623		Ok(string::from_utf8_lossy(&self.token_prefix).into())624	}625626	/// @notice Set or reaffirm the approved address for an NFT627	/// @dev The zero address indicates there is no approved address.628	/// @dev Throws unless `msg.sender` is the current NFT owner, or an authorized629	///  operator of the current owner.630	/// @param approved The new substrate address approved NFT controller631	/// @param tokenId The NFT to approve632	#[weight(<SelfWeightOf<T>>::approve())]633	fn approve_cross(634		&mut self,635		caller: caller,636		approved: (address, uint256),637		token_id: uint256,638	) -> Result<void> {639		let caller = T::CrossAccountId::from_eth(caller);640		let approved = convert_tuple_to_cross_account::<T>(approved)?;641		let token = token_id.try_into()?;642643		<Pallet<T>>::set_allowance(self, &caller, token, Some(&approved))644			.map_err(dispatch_to_evm::<T>)?;645		Ok(())646	}647648	/// @notice Transfer ownership of an NFT649	/// @dev Throws unless `msg.sender` is the current owner. Throws if `to`650	///  is the zero address. Throws if `tokenId` is not a valid NFT.651	/// @param to The new owner652	/// @param tokenId The NFT to transfer653	#[weight(<SelfWeightOf<T>>::transfer())]654	fn transfer(&mut self, caller: caller, to: address, token_id: uint256) -> Result<void> {655		let caller = T::CrossAccountId::from_eth(caller);656		let to = T::CrossAccountId::from_eth(to);657		let token = token_id.try_into()?;658		let budget = self659			.recorder660			.weight_calls_budget(<StructureWeight<T>>::find_parent());661662		<Pallet<T>>::transfer(self, &caller, &to, token, &budget).map_err(dispatch_to_evm::<T>)?;663		Ok(())664	}665666	/// @notice Transfer ownership of an NFT from cross account address to cross account address667	/// @dev Throws unless `msg.sender` is the current owner. Throws if `to`668	///  is the zero address. Throws if `tokenId` is not a valid NFT.669	/// @param from Cross acccount address of current owner670	/// @param to Cross acccount address of new owner671	/// @param tokenId The NFT to transfer672	#[weight(<SelfWeightOf<T>>::transfer())]673	fn transfer_from_cross(674		&mut self,675		caller: caller,676		from: (address, uint256),677		to: (address, uint256),678		token_id: uint256,679	) -> Result<void> {680		let caller = T::CrossAccountId::from_eth(caller);681		let from = convert_tuple_to_cross_account::<T>(from)?;682		let to = convert_tuple_to_cross_account::<T>(to)?;683		let token_id = token_id.try_into()?;684		let budget = self685			.recorder686			.weight_calls_budget(<StructureWeight<T>>::find_parent());687		Pallet::<T>::transfer_from(self, &caller, &from, &to, token_id, &budget)688			.map_err(dispatch_to_evm::<T>)?;689		Ok(())690	}691692	/// @notice Burns a specific ERC721 token.693	/// @dev Throws unless `msg.sender` is the current owner or an authorized694	///  operator for this NFT. Throws if `from` is not the current owner. Throws695	///  if `to` is the zero address. Throws if `tokenId` is not a valid NFT.696	/// @param from The current owner of the NFT697	/// @param tokenId The NFT to transfer698	#[weight(<SelfWeightOf<T>>::burn_from())]699	fn burn_from(&mut self, caller: caller, from: address, token_id: uint256) -> Result<void> {700		let caller = T::CrossAccountId::from_eth(caller);701		let from = T::CrossAccountId::from_eth(from);702		let token = token_id.try_into()?;703		let budget = self704			.recorder705			.weight_calls_budget(<StructureWeight<T>>::find_parent());706707		<Pallet<T>>::burn_from(self, &caller, &from, token, &budget)708			.map_err(dispatch_to_evm::<T>)?;709		Ok(())710	}711712	/// @notice Burns a specific ERC721 token.713	/// @dev Throws unless `msg.sender` is the current owner or an authorized714	///  operator for this NFT. Throws if `from` is not the current owner. Throws715	///  if `to` is the zero address. Throws if `tokenId` is not a valid NFT.716	/// @param from The current owner of the NFT717	/// @param tokenId The NFT to transfer718	#[weight(<SelfWeightOf<T>>::burn_from())]719	fn burn_from_cross(720		&mut self,721		caller: caller,722		from: (address, uint256),723		token_id: uint256,724	) -> Result<void> {725		let caller = T::CrossAccountId::from_eth(caller);726		let from = convert_tuple_to_cross_account::<T>(from)?;727		let token = token_id.try_into()?;728		let budget = self729			.recorder730			.weight_calls_budget(<StructureWeight<T>>::find_parent());731732		<Pallet<T>>::burn_from(self, &caller, &from, token, &budget)733			.map_err(dispatch_to_evm::<T>)?;734		Ok(())735	}736737	/// @notice Returns next free NFT ID.738	fn next_token_id(&self) -> Result<uint256> {739		self.consume_store_reads(1)?;740		Ok(<TokensMinted<T>>::get(self.id)741			.checked_add(1)742			.ok_or("item id overflow")?743			.into())744	}745746	/// @notice Function to mint multiple tokens.747	/// @dev `tokenIds` should be an array of consecutive numbers and first number748	///  should be obtained with `nextTokenId` method749	/// @param to The new owner750	/// @param tokenIds IDs of the minted NFTs751	#[solidity(hide)]752	#[weight(<SelfWeightOf<T>>::create_multiple_items(token_ids.len() as u32))]753	fn mint_bulk(&mut self, caller: caller, to: address, token_ids: Vec<uint256>) -> Result<bool> {754		let caller = T::CrossAccountId::from_eth(caller);755		let to = T::CrossAccountId::from_eth(to);756		let mut expected_index = <TokensMinted<T>>::get(self.id)757			.checked_add(1)758			.ok_or("item id overflow")?;759		let budget = self760			.recorder761			.weight_calls_budget(<StructureWeight<T>>::find_parent());762763		let total_tokens = token_ids.len();764		for id in token_ids.into_iter() {765			let id: u32 = id.try_into().map_err(|_| "token id overflow")?;766			if id != expected_index {767				return Err("item id should be next".into());768			}769			expected_index = expected_index.checked_add(1).ok_or("item id overflow")?;770		}771		let data = (0..total_tokens)772			.map(|_| CreateItemData::<T> {773				properties: BoundedVec::default(),774				owner: to.clone(),775			})776			.collect();777778		<Pallet<T>>::create_multiple_items(self, &caller, data, &budget)779			.map_err(dispatch_to_evm::<T>)?;780		Ok(true)781	}782783	/// @notice Function to mint multiple tokens with the given tokenUris.784	/// @dev `tokenIds` is array of pairs of token ID and token URI. Token IDs should be consecutive785	///  numbers and first number should be obtained with `nextTokenId` method786	/// @param to The new owner787	/// @param tokens array of pairs of token ID and token URI for minted tokens788	#[solidity(hide, rename_selector = "mintBulkWithTokenURI")]789	#[weight(<SelfWeightOf<T>>::create_multiple_items(tokens.len() as u32))]790	fn mint_bulk_with_token_uri(791		&mut self,792		caller: caller,793		to: address,794		tokens: Vec<(uint256, string)>,795	) -> Result<bool> {796		let key = key::url();797		let caller = T::CrossAccountId::from_eth(caller);798		let to = T::CrossAccountId::from_eth(to);799		let mut expected_index = <TokensMinted<T>>::get(self.id)800			.checked_add(1)801			.ok_or("item id overflow")?;802		let budget = self803			.recorder804			.weight_calls_budget(<StructureWeight<T>>::find_parent());805806		let mut data = Vec::with_capacity(tokens.len());807		for (id, token_uri) in tokens {808			let id: u32 = id.try_into().map_err(|_| "token id overflow")?;809			if id != expected_index {810				return Err("item id should be next".into());811			}812			expected_index = expected_index.checked_add(1).ok_or("item id overflow")?;813814			let mut properties = CollectionPropertiesVec::default();815			properties816				.try_push(Property {817					key: key.clone(),818					value: token_uri819						.into_bytes()820						.try_into()821						.map_err(|_| "token uri is too long")?,822				})823				.map_err(|e| Error::Revert(alloc::format!("Can't add property: {:?}", e)))?;824825			data.push(CreateItemData::<T> {826				properties,827				owner: to.clone(),828			});829		}830831		<Pallet<T>>::create_multiple_items(self, &caller, data, &budget)832			.map_err(dispatch_to_evm::<T>)?;833		Ok(true)834	}835}836837#[solidity_interface(838	name = UniqueNFT,839	is(840		ERC721,841		ERC721Enumerable,842		ERC721UniqueExtensions,843		ERC721UniqueMintable,844		ERC721Burnable,845		ERC721Metadata(if(this.flags.erc721metadata)),846		Collection(via(common_mut returns CollectionHandle<T>)),847		TokenProperties,848	)849)]850impl<T: Config> NonfungibleHandle<T> where T::AccountId: From<[u8; 32]> + AsRef<[u8; 32]> {}851852// Not a tests, but code generators853generate_stubgen!(gen_impl, UniqueNFTCall<()>, true);854generate_stubgen!(gen_iface, UniqueNFTCall<()>, false);855856impl<T: Config> CommonEvmHandler for NonfungibleHandle<T>857where858	T::AccountId: From<[u8; 32]> + AsRef<[u8; 32]>,859{860	const CODE: &'static [u8] = include_bytes!("./stubs/UniqueNFT.raw");861862	fn call(self, handle: &mut impl PrecompileHandle) -> Option<PrecompileResult> {863		call::<T, UniqueNFTCall<T>, _, _>(handle, self)864	}865}