git.delta.rocks / unique-network / refs/commits / f779788ead2c

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, token_uri_key},37	CollectionHandle, CollectionPropertyPermissions,38};39use pallet_evm::{account::CrossAccountId, PrecompileHandle};40use pallet_evm_coder_substrate::call;41use pallet_structure::{SelfWeightOf as StructureWeight, weights::WeightInfo as _};4243use crate::{44	AccountBalance, Config, CreateItemData, NonfungibleHandle, Pallet, TokenData, TokensMinted,45	SelfWeightOf, weights::WeightInfo, TokenProperties,46};4748/// @title A contract that allows to set and delete token properties and change token property permissions.49#[solidity_interface(name = "TokenProperties")]50impl<T: Config> NonfungibleHandle<T> {51	/// @notice Set permissions for token property.52	/// @dev Throws error if `msg.sender` is not admin or owner of the collection.53	/// @param key Property key.54	/// @param is_mutable Permission to mutate property.55	/// @param collection_admin Permission to mutate property by collection admin if property is mutable.56	/// @param token_owner Permission to mutate property by token owner if property is mutable.57	fn set_token_property_permission(58		&mut self,59		caller: caller,60		key: string,61		is_mutable: bool,62		collection_admin: bool,63		token_owner: bool,64	) -> Result<()> {65		let caller = T::CrossAccountId::from_eth(caller);66		<Pallet<T>>::set_property_permission(67			self,68			&caller,69			PropertyKeyPermission {70				key: <Vec<u8>>::from(key)71					.try_into()72					.map_err(|_| "too long key")?,73				permission: PropertyPermission {74					mutable: is_mutable,75					collection_admin,76					token_owner,77				},78			},79		)80		.map_err(dispatch_to_evm::<T>)81	}8283	/// @notice Set token property value.84	/// @dev Throws error if `msg.sender` has no permission to edit the property.85	/// @param tokenId ID of the token.86	/// @param key Property key.87	/// @param value Property value.88	fn set_property(89		&mut self,90		caller: caller,91		token_id: uint256,92		key: string,93		value: bytes,94	) -> Result<()> {95		let caller = T::CrossAccountId::from_eth(caller);96		let token_id: u32 = token_id.try_into().map_err(|_| "token id overflow")?;97		let key = <Vec<u8>>::from(key)98			.try_into()99			.map_err(|_| "key too long")?;100		let value = value.try_into().map_err(|_| "value too long")?;101102		let nesting_budget = self103			.recorder104			.weight_calls_budget(<StructureWeight<T>>::find_parent());105106		<Pallet<T>>::set_token_property(107			self,108			&caller,109			TokenId(token_id),110			Property { key, value },111			&nesting_budget,112		)113		.map_err(dispatch_to_evm::<T>)114	}115116	/// @notice Delete token property value.117	/// @dev Throws error if `msg.sender` has no permission to edit the property.118	/// @param tokenId ID of the token.119	/// @param key Property key.120	fn delete_property(&mut self, token_id: uint256, caller: caller, key: string) -> Result<()> {121		let caller = T::CrossAccountId::from_eth(caller);122		let token_id: u32 = token_id.try_into().map_err(|_| "token id overflow")?;123		let key = <Vec<u8>>::from(key)124			.try_into()125			.map_err(|_| "key too long")?;126127		let nesting_budget = self128			.recorder129			.weight_calls_budget(<StructureWeight<T>>::find_parent());130131		<Pallet<T>>::delete_token_property(self, &caller, TokenId(token_id), key, &nesting_budget)132			.map_err(dispatch_to_evm::<T>)133	}134135	/// @notice Get token property value.136	/// @dev Throws error if key not found137	/// @param tokenId ID of the token.138	/// @param key Property key.139	/// @return Property value bytes140	fn property(&self, token_id: uint256, key: string) -> Result<bytes> {141		let token_id: u32 = token_id.try_into().map_err(|_| "token id overflow")?;142		let key = <Vec<u8>>::from(key)143			.try_into()144			.map_err(|_| "key too long")?;145146		let props = <TokenProperties<T>>::get((self.id, token_id));147		let prop = props.get(&key).ok_or("key not found")?;148149		Ok(prop.to_vec())150	}151}152153#[derive(ToLog)]154pub enum ERC721Events {155	/// @dev This emits when ownership of any NFT changes by any mechanism.156	///  This event emits when NFTs are created (`from` == 0) and destroyed157	///  (`to` == 0). Exception: during contract creation, any number of NFTs158	///  may be created and assigned without emitting Transfer. At the time of159	///  any transfer, the approved address for that NFT (if any) is reset to none.160	Transfer {161		#[indexed]162		from: address,163		#[indexed]164		to: address,165		#[indexed]166		token_id: uint256,167	},168	/// @dev This emits when the approved address for an NFT is changed or169	///  reaffirmed. The zero address indicates there is no approved address.170	///  When a Transfer event emits, this also indicates that the approved171	///  address for that NFT (if any) is reset to none.172	Approval {173		#[indexed]174		owner: address,175		#[indexed]176		approved: address,177		#[indexed]178		token_id: uint256,179	},180	/// @dev This emits when an operator is enabled or disabled for an owner.181	///  The operator can manage all NFTs of the owner.182	#[allow(dead_code)]183	ApprovalForAll {184		#[indexed]185		owner: address,186		#[indexed]187		operator: address,188		approved: bool,189	},190}191192#[derive(ToLog)]193pub enum ERC721MintableEvents {194	#[allow(dead_code)]195	MintingFinished {},196}197198/// @title ERC-721 Non-Fungible Token Standard, optional metadata extension199/// @dev See https://eips.ethereum.org/EIPS/eip-721200#[solidity_interface(name = "ERC721Metadata")]201impl<T: Config> NonfungibleHandle<T> {202	/// @notice A descriptive name for a collection of NFTs in this contract203	fn name(&self) -> Result<string> {204		Ok(decode_utf16(self.name.iter().copied())205			.map(|r| r.unwrap_or(REPLACEMENT_CHARACTER))206			.collect::<string>())207	}208209	/// @notice An abbreviated name for NFTs in this contract210	fn symbol(&self) -> Result<string> {211		Ok(string::from_utf8_lossy(&self.token_prefix).into())212	}213214	/// @notice A distinct Uniform Resource Identifier (URI) for a given asset.215	/// @dev Throws if `tokenId` is not a valid NFT. URIs are defined in RFC216	///  3986. The URI may point to a JSON file that conforms to the "ERC721217	///  Metadata JSON Schema".218	/// @return token's const_metadata219	#[solidity(rename_selector = "tokenURI")]220	fn token_uri(&self, token_id: uint256) -> Result<string> {221		let key = token_uri_key();222		if !has_token_permission::<T>(self.id, &key) {223			return Err("No tokenURI permission".into());224		}225226		self.consume_store_reads(1)?;227		let token_id: u32 = token_id.try_into().map_err(|_| "token id overflow")?;228229		let properties = <TokenProperties<T>>::try_get((self.id, token_id))230			.map_err(|_| Error::Revert("Token properties not found".into()))?;231		if let Some(property) = properties.get(&key) {232			return Ok(string::from_utf8_lossy(property).into());233		}234235		Err("Property tokenURI not found".into())236	}237}238239/// @title ERC-721 Non-Fungible Token Standard, optional enumeration extension240/// @dev See https://eips.ethereum.org/EIPS/eip-721241#[solidity_interface(name = "ERC721Enumerable")]242impl<T: Config> NonfungibleHandle<T> {243	/// @notice Enumerate valid NFTs244	/// @param index A counter less than `totalSupply()`245	/// @return The token identifier for the `index`th NFT,246	///  (sort order not specified)247	fn token_by_index(&self, index: uint256) -> Result<uint256> {248		Ok(index)249	}250251	/// @dev Not implemented252	fn token_of_owner_by_index(&self, _owner: address, _index: uint256) -> Result<uint256> {253		// TODO: Not implemetable254		Err("not implemented".into())255	}256257	/// @notice Count NFTs tracked by this contract258	/// @return A count of valid NFTs tracked by this contract, where each one of259	///  them has an assigned and queryable owner not equal to the zero address260	fn total_supply(&self) -> Result<uint256> {261		self.consume_store_reads(1)?;262		Ok(<Pallet<T>>::total_supply(self).into())263	}264}265266/// @title ERC-721 Non-Fungible Token Standard267/// @dev See https://github.com/ethereum/EIPs/blob/master/EIPS/eip-721.md268#[solidity_interface(name = "ERC721", events(ERC721Events))]269impl<T: Config> NonfungibleHandle<T> {270	/// @notice Count all NFTs assigned to an owner271	/// @dev NFTs assigned to the zero address are considered invalid, and this272	///  function throws for queries about the zero address.273	/// @param owner An address for whom to query the balance274	/// @return The number of NFTs owned by `owner`, possibly zero275	fn balance_of(&self, owner: address) -> Result<uint256> {276		self.consume_store_reads(1)?;277		let owner = T::CrossAccountId::from_eth(owner);278		let balance = <AccountBalance<T>>::get((self.id, owner));279		Ok(balance.into())280	}281	/// @notice Find the owner of an NFT282	/// @dev NFTs assigned to zero address are considered invalid, and queries283	///  about them do throw.284	/// @param tokenId The identifier for an NFT285	/// @return The address of the owner of the NFT286	fn owner_of(&self, token_id: uint256) -> Result<address> {287		self.consume_store_reads(1)?;288		let token: TokenId = token_id.try_into()?;289		Ok(*<TokenData<T>>::get((self.id, token))290			.ok_or("token not found")?291			.owner292			.as_eth())293	}294	/// @dev Not implemented295	fn safe_transfer_from_with_data(296		&mut self,297		_from: address,298		_to: address,299		_token_id: uint256,300		_data: bytes,301		_value: value,302	) -> Result<void> {303		// TODO: Not implemetable304		Err("not implemented".into())305	}306	/// @dev Not implemented307	fn safe_transfer_from(308		&mut self,309		_from: address,310		_to: address,311		_token_id: uint256,312		_value: value,313	) -> Result<void> {314		// TODO: Not implemetable315		Err("not implemented".into())316	}317318	/// @notice Transfer ownership of an NFT -- THE CALLER IS RESPONSIBLE319	///  TO CONFIRM THAT `to` IS CAPABLE OF RECEIVING NFTS OR ELSE320	///  THEY MAY BE PERMANENTLY LOST321	/// @dev Throws unless `msg.sender` is the current owner or an authorized322	///  operator for this NFT. Throws if `from` is not the current owner. Throws323	///  if `to` is the zero address. Throws if `tokenId` is not a valid NFT.324	/// @param from The current owner of the NFT325	/// @param to The new owner326	/// @param tokenId The NFT to transfer327	/// @param _value Not used for an NFT328	#[weight(<SelfWeightOf<T>>::transfer_from())]329	fn transfer_from(330		&mut self,331		caller: caller,332		from: address,333		to: address,334		token_id: uint256,335		_value: value,336	) -> Result<void> {337		let caller = T::CrossAccountId::from_eth(caller);338		let from = T::CrossAccountId::from_eth(from);339		let to = T::CrossAccountId::from_eth(to);340		let token = token_id.try_into()?;341		let budget = self342			.recorder343			.weight_calls_budget(<StructureWeight<T>>::find_parent());344345		<Pallet<T>>::transfer_from(self, &caller, &from, &to, token, &budget)346			.map_err(dispatch_to_evm::<T>)?;347		Ok(())348	}349350	/// @notice Set or reaffirm the approved address for an NFT351	/// @dev The zero address indicates there is no approved address.352	/// @dev Throws unless `msg.sender` is the current NFT owner, or an authorized353	///  operator of the current owner.354	/// @param approved The new approved NFT controller355	/// @param tokenId The NFT to approve356	#[weight(<SelfWeightOf<T>>::approve())]357	fn approve(358		&mut self,359		caller: caller,360		approved: address,361		token_id: uint256,362		_value: value,363	) -> Result<void> {364		let caller = T::CrossAccountId::from_eth(caller);365		let approved = T::CrossAccountId::from_eth(approved);366		let token = token_id.try_into()?;367368		<Pallet<T>>::set_allowance(self, &caller, token, Some(&approved))369			.map_err(dispatch_to_evm::<T>)?;370		Ok(())371	}372373	/// @dev Not implemented374	fn set_approval_for_all(375		&mut self,376		_caller: caller,377		_operator: address,378		_approved: bool,379	) -> Result<void> {380		// TODO: Not implemetable381		Err("not implemented".into())382	}383384	/// @dev Not implemented385	fn get_approved(&self, _token_id: uint256) -> Result<address> {386		// TODO: Not implemetable387		Err("not implemented".into())388	}389390	/// @dev Not implemented391	fn is_approved_for_all(&self, _owner: address, _operator: address) -> Result<address> {392		// TODO: Not implemetable393		Err("not implemented".into())394	}395}396397/// @title ERC721 Token that can be irreversibly burned (destroyed).398#[solidity_interface(name = "ERC721Burnable")]399impl<T: Config> NonfungibleHandle<T> {400	/// @notice Burns a specific ERC721 token.401	/// @dev Throws unless `msg.sender` is the current NFT owner, or an authorized402	///  operator of the current owner.403	/// @param tokenId The NFT to approve404	#[weight(<SelfWeightOf<T>>::burn_item())]405	fn burn(&mut self, caller: caller, token_id: uint256) -> Result<void> {406		let caller = T::CrossAccountId::from_eth(caller);407		let token = token_id.try_into()?;408409		<Pallet<T>>::burn(self, &caller, token).map_err(dispatch_to_evm::<T>)?;410		Ok(())411	}412}413414/// @title ERC721 minting logic.415#[solidity_interface(name = "ERC721Mintable", events(ERC721MintableEvents))]416impl<T: Config> NonfungibleHandle<T> {417	fn minting_finished(&self) -> Result<bool> {418		Ok(false)419	}420421	/// @notice Function to mint token.422	/// @dev `tokenId` should be obtained with `nextTokenId` method,423	///  unlike standard, you can't specify it manually424	/// @param to The new owner425	/// @param tokenId ID of the minted NFT426	#[weight(<SelfWeightOf<T>>::create_item())]427	fn mint(&mut self, caller: caller, to: address, token_id: uint256) -> Result<bool> {428		let caller = T::CrossAccountId::from_eth(caller);429		let to = T::CrossAccountId::from_eth(to);430		let token_id: u32 = token_id.try_into()?;431		let budget = self432			.recorder433			.weight_calls_budget(<StructureWeight<T>>::find_parent());434435		if <TokensMinted<T>>::get(self.id)436			.checked_add(1)437			.ok_or("item id overflow")?438			!= token_id439		{440			return Err("item id should be next".into());441		}442443		<Pallet<T>>::create_item(444			self,445			&caller,446			CreateItemData::<T> {447				properties: BoundedVec::default(),448				owner: to,449			},450			&budget,451		)452		.map_err(dispatch_to_evm::<T>)?;453454		Ok(true)455	}456457	/// @notice Function to mint token with the given tokenUri.458	/// @dev `tokenId` should be obtained with `nextTokenId` method,459	///  unlike standard, you can't specify it manually460	/// @param to The new owner461	/// @param tokenId ID of the minted NFT462	/// @param tokenUri Token URI that would be stored in the NFT properties463	#[solidity(rename_selector = "mintWithTokenURI")]464	#[weight(<SelfWeightOf<T>>::create_item())]465	fn mint_with_token_uri(466		&mut self,467		caller: caller,468		to: address,469		token_id: uint256,470		token_uri: string,471	) -> Result<bool> {472		let key = token_uri_key();473		let permission = get_token_permission::<T>(self.id, &key)?;474		if !permission.collection_admin {475			return Err("Operation is not allowed".into());476		}477478		let caller = T::CrossAccountId::from_eth(caller);479		let to = T::CrossAccountId::from_eth(to);480		let token_id: u32 = token_id.try_into().map_err(|_| "amount overflow")?;481		let budget = self482			.recorder483			.weight_calls_budget(<StructureWeight<T>>::find_parent());484485		if <TokensMinted<T>>::get(self.id)486			.checked_add(1)487			.ok_or("item id overflow")?488			!= token_id489		{490			return Err("item id should be next".into());491		}492493		let mut properties = CollectionPropertiesVec::default();494		properties495			.try_push(Property {496				key,497				value: token_uri498					.into_bytes()499					.try_into()500					.map_err(|_| "token uri is too long")?,501			})502			.map_err(|e| Error::Revert(alloc::format!("Can't add property: {:?}", e)))?;503504		<Pallet<T>>::create_item(505			self,506			&caller,507			CreateItemData::<T> {508				properties,509				owner: to,510			},511			&budget,512		)513		.map_err(dispatch_to_evm::<T>)?;514		Ok(true)515	}516517	/// @dev Not implemented518	fn finish_minting(&mut self, _caller: caller) -> Result<bool> {519		Err("not implementable".into())520	}521}522523fn get_token_permission<T: Config>(524	collection_id: CollectionId,525	key: &PropertyKey,526) -> Result<PropertyPermission> {527	let token_property_permissions = CollectionPropertyPermissions::<T>::try_get(collection_id)528		.map_err(|_| Error::Revert("No permissions for collection".into()))?;529	let a = token_property_permissions530		.get(key)531		.map(|p| p.clone())532		.ok_or_else(|| Error::Revert("No permission".into()))?;533	Ok(a)534}535536fn has_token_permission<T: Config>(collection_id: CollectionId, key: &PropertyKey) -> bool {537	if let Ok(token_property_permissions) =538		CollectionPropertyPermissions::<T>::try_get(collection_id)539	{540		return token_property_permissions.contains_key(key);541	}542543	false544}545546/// @title Unique extensions for ERC721.547#[solidity_interface(name = "ERC721UniqueExtensions")]548impl<T: Config> NonfungibleHandle<T> {549	/// @notice Transfer ownership of an NFT550	/// @dev Throws unless `msg.sender` is the current owner. Throws if `to`551	///  is the zero address. Throws if `tokenId` is not a valid NFT.552	/// @param to The new owner553	/// @param tokenId The NFT to transfer554	/// @param _value Not used for an NFT555	#[weight(<SelfWeightOf<T>>::transfer())]556	fn transfer(557		&mut self,558		caller: caller,559		to: address,560		token_id: uint256,561		_value: value,562	) -> Result<void> {563		let caller = T::CrossAccountId::from_eth(caller);564		let to = T::CrossAccountId::from_eth(to);565		let token = token_id.try_into()?;566		let budget = self567			.recorder568			.weight_calls_budget(<StructureWeight<T>>::find_parent());569570		<Pallet<T>>::transfer(self, &caller, &to, token, &budget).map_err(dispatch_to_evm::<T>)?;571		Ok(())572	}573574	/// @notice Burns a specific ERC721 token.575	/// @dev Throws unless `msg.sender` is the current owner or an authorized576	///  operator for this NFT. Throws if `from` is not the current owner. Throws577	///  if `to` is the zero address. Throws if `tokenId` is not a valid NFT.578	/// @param from The current owner of the NFT579	/// @param tokenId The NFT to transfer580	/// @param _value Not used for an NFT581	#[weight(<SelfWeightOf<T>>::burn_from())]582	fn burn_from(583		&mut self,584		caller: caller,585		from: address,586		token_id: uint256,587		_value: value,588	) -> Result<void> {589		let caller = T::CrossAccountId::from_eth(caller);590		let from = T::CrossAccountId::from_eth(from);591		let token = token_id.try_into()?;592		let budget = self593			.recorder594			.weight_calls_budget(<StructureWeight<T>>::find_parent());595596		<Pallet<T>>::burn_from(self, &caller, &from, token, &budget)597			.map_err(dispatch_to_evm::<T>)?;598		Ok(())599	}600601	/// @notice Returns next free NFT ID.602	fn next_token_id(&self) -> Result<uint256> {603		self.consume_store_reads(1)?;604		Ok(<TokensMinted<T>>::get(self.id)605			.checked_add(1)606			.ok_or("item id overflow")?607			.into())608	}609610	/// @notice Function to mint multiple tokens.611	/// @dev `tokenIds` should be an array of consecutive numbers and first number612	///  should be obtained with `nextTokenId` method613	/// @param to The new owner614	/// @param tokenIds IDs of the minted NFTs615	#[weight(<SelfWeightOf<T>>::create_multiple_items(token_ids.len() as u32))]616	fn mint_bulk(&mut self, caller: caller, to: address, token_ids: Vec<uint256>) -> Result<bool> {617		let caller = T::CrossAccountId::from_eth(caller);618		let to = T::CrossAccountId::from_eth(to);619		let mut expected_index = <TokensMinted<T>>::get(self.id)620			.checked_add(1)621			.ok_or("item id overflow")?;622		let budget = self623			.recorder624			.weight_calls_budget(<StructureWeight<T>>::find_parent());625626		let total_tokens = token_ids.len();627		for id in token_ids.into_iter() {628			let id: u32 = id.try_into().map_err(|_| "token id overflow")?;629			if id != expected_index {630				return Err("item id should be next".into());631			}632			expected_index = expected_index.checked_add(1).ok_or("item id overflow")?;633		}634		let data = (0..total_tokens)635			.map(|_| CreateItemData::<T> {636				properties: BoundedVec::default(),637				owner: to.clone(),638			})639			.collect();640641		<Pallet<T>>::create_multiple_items(self, &caller, data, &budget)642			.map_err(dispatch_to_evm::<T>)?;643		Ok(true)644	}645646	/// @notice Function to mint multiple tokens with the given tokenUris.647	/// @dev `tokenIds` is array of pairs of token ID and token URI. Token IDs should be consecutive648	///  numbers and first number should be obtained with `nextTokenId` method649	/// @param to The new owner650	/// @param tokens array of pairs of token ID and token URI for minted tokens651	#[solidity(rename_selector = "mintBulkWithTokenURI")]652	#[weight(<SelfWeightOf<T>>::create_multiple_items(tokens.len() as u32))]653	fn mint_bulk_with_token_uri(654		&mut self,655		caller: caller,656		to: address,657		tokens: Vec<(uint256, string)>,658	) -> Result<bool> {659		let key = token_uri_key();660		let caller = T::CrossAccountId::from_eth(caller);661		let to = T::CrossAccountId::from_eth(to);662		let mut expected_index = <TokensMinted<T>>::get(self.id)663			.checked_add(1)664			.ok_or("item id overflow")?;665		let budget = self666			.recorder667			.weight_calls_budget(<StructureWeight<T>>::find_parent());668669		let mut data = Vec::with_capacity(tokens.len());670		for (id, token_uri) in tokens {671			let id: u32 = id.try_into().map_err(|_| "token id overflow")?;672			if id != expected_index {673				return Err("item id should be next".into());674			}675			expected_index = expected_index.checked_add(1).ok_or("item id overflow")?;676677			let mut properties = CollectionPropertiesVec::default();678			properties679				.try_push(Property {680					key: key.clone(),681					value: token_uri682						.into_bytes()683						.try_into()684						.map_err(|_| "token uri is too long")?,685				})686				.map_err(|e| Error::Revert(alloc::format!("Can't add property: {:?}", e)))?;687688			data.push(CreateItemData::<T> {689				properties,690				owner: to.clone(),691			});692		}693694		<Pallet<T>>::create_multiple_items(self, &caller, data, &budget)695			.map_err(dispatch_to_evm::<T>)?;696		Ok(true)697	}698}699700#[solidity_interface(701	name = "UniqueNFT",702	is(703		ERC721,704		ERC721Metadata,705		ERC721Enumerable,706		ERC721UniqueExtensions,707		ERC721Mintable,708		ERC721Burnable,709		via("CollectionHandle<T>", common_mut, Collection),710		TokenProperties,711	)712)]713impl<T: Config> NonfungibleHandle<T> where T::AccountId: From<[u8; 32]> {}714715// Not a tests, but code generators716generate_stubgen!(gen_impl, UniqueNFTCall<()>, true);717generate_stubgen!(gen_iface, UniqueNFTCall<()>, false);718719impl<T: Config> CommonEvmHandler for NonfungibleHandle<T>720where721	T::AccountId: From<[u8; 32]>,722{723	const CODE: &'static [u8] = include_bytes!("./stubs/UniqueNFT.raw");724725	fn call(self, handle: &mut impl PrecompileHandle) -> Option<PrecompileResult> {726		call::<T, UniqueNFTCall<T>, _, _>(handle, self)727	}728}