git.delta.rocks / unique-network / refs/commits / b44fe9bf17b6

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//! # Refungible Pallet EVM API for tokens18//!19//! Provides ERC-721 standart support implementation and EVM API for unique extensions for Refungible Pallet.20//! Method implementations are mostly doing parameter conversion and calling Refungible Pallet methods.2122extern crate alloc;2324use alloc::{format, string::ToString};25use core::{26	char::{REPLACEMENT_CHARACTER, decode_utf16},27	convert::TryInto,28};29use evm_coder::{ToLog, execution::*, generate_stubgen, solidity, solidity_interface, types::*, weight};30use frame_support::{BoundedBTreeMap, BoundedVec};31use pallet_common::{32	CollectionHandle, CollectionPropertyPermissions,33	erc::{CommonEvmHandler, CollectionCall, static_property::key},34	eth::convert_tuple_to_cross_account,35};36use pallet_evm::{account::CrossAccountId, PrecompileHandle};37use pallet_evm_coder_substrate::{call, dispatch_to_evm};38use pallet_structure::{SelfWeightOf as StructureWeight, weights::WeightInfo as _};39use sp_core::H160;40use sp_std::{collections::btree_map::BTreeMap, vec::Vec, vec};41use up_data_structs::{42	CollectionId, CollectionPropertiesVec, mapping::TokenAddressMapping, Property, PropertyKey,43	PropertyKeyPermission, PropertyPermission, TokenId,44};4546use crate::{47	AccountBalance, Balance, Config, CreateItemData, Pallet, RefungibleHandle, SelfWeightOf,48	TokenProperties, TokensMinted, TotalSupply, weights::WeightInfo,49};5051pub const ADDRESS_FOR_PARTIALLY_OWNED_TOKENS: H160 = H160::repeat_byte(0xff);5253/// @title A contract that allows to set and delete token properties and change token property permissions.54#[solidity_interface(name = TokenProperties)]55impl<T: Config> RefungibleHandle<T> {56	/// @notice Set permissions for token property.57	/// @dev Throws error if `msg.sender` is not admin or owner of the collection.58	/// @param key Property key.59	/// @param isMutable Permission to mutate property.60	/// @param collectionAdmin Permission to mutate property by collection admin if property is mutable.61	/// @param tokenOwner Permission to mutate property by token owner if property is mutable.62	fn set_token_property_permission(63		&mut self,64		caller: caller,65		key: string,66		is_mutable: bool,67		collection_admin: bool,68		token_owner: bool,69	) -> Result<()> {70		let caller = T::CrossAccountId::from_eth(caller);71		<Pallet<T>>::set_token_property_permissions(72			self,73			&caller,74			vec![PropertyKeyPermission {75				key: <Vec<u8>>::from(key)76					.try_into()77					.map_err(|_| "too long key")?,78				permission: PropertyPermission {79					mutable: is_mutable,80					collection_admin,81					token_owner,82				},83			}],84		)85		.map_err(dispatch_to_evm::<T>)86	}8788	/// @notice Set token property value.89	/// @dev Throws error if `msg.sender` has no permission to edit the property.90	/// @param tokenId ID of the token.91	/// @param key Property key.92	/// @param value Property value.93	fn set_property(94		&mut self,95		caller: caller,96		token_id: uint256,97		key: string,98		value: bytes,99	) -> Result<()> {100		let caller = T::CrossAccountId::from_eth(caller);101		let token_id: u32 = token_id.try_into().map_err(|_| "token id overflow")?;102		let key = <Vec<u8>>::from(key)103			.try_into()104			.map_err(|_| "key too long")?;105		let value = value.0.try_into().map_err(|_| "value too long")?;106107		let nesting_budget = self108			.recorder109			.weight_calls_budget(<StructureWeight<T>>::find_parent());110111		<Pallet<T>>::set_token_property(112			self,113			&caller,114			TokenId(token_id),115			Property { key, value },116			&nesting_budget,117		)118		.map_err(dispatch_to_evm::<T>)119	}120121	/// @notice Set token properties value.122	/// @dev Throws error if `msg.sender` has no permission to edit the property.123	/// @param tokenId ID of the token.124	/// @param properties settable properties125	fn set_properties(126		&mut self,127		caller: caller,128		token_id: uint256,129		properties: Vec<(string, bytes)>,130	) -> Result<()> {131		let caller = T::CrossAccountId::from_eth(caller);132		let token_id: u32 = token_id.try_into().map_err(|_| "token id overflow")?;133134		let nesting_budget = self135			.recorder136			.weight_calls_budget(<StructureWeight<T>>::find_parent());137138		let properties = properties139			.into_iter()140			.map(|(key, value)| {141				let key = <Vec<u8>>::from(key)142					.try_into()143					.map_err(|_| "key too large")?;144145				let value = value.0.try_into().map_err(|_| "value too large")?;146147				Ok(Property { key, value })148			})149			.collect::<Result<Vec<_>>>()?;150151		<Pallet<T>>::set_token_properties(152			self,153			&caller,154			TokenId(token_id),155			properties.into_iter(),156			<Pallet<T>>::token_exists(&self, TokenId(token_id)),157			&nesting_budget,158		)159		.map_err(dispatch_to_evm::<T>)160	}161162	/// @notice Delete token property value.163	/// @dev Throws error if `msg.sender` has no permission to edit the property.164	/// @param tokenId ID of the token.165	/// @param key Property key.166	fn delete_property(&mut self, token_id: uint256, caller: caller, key: string) -> Result<()> {167		let caller = T::CrossAccountId::from_eth(caller);168		let token_id: u32 = token_id.try_into().map_err(|_| "token id overflow")?;169		let key = <Vec<u8>>::from(key)170			.try_into()171			.map_err(|_| "key too long")?;172173		let nesting_budget = self174			.recorder175			.weight_calls_budget(<StructureWeight<T>>::find_parent());176177		<Pallet<T>>::delete_token_property(self, &caller, TokenId(token_id), key, &nesting_budget)178			.map_err(dispatch_to_evm::<T>)179	}180181	/// @notice Get token property value.182	/// @dev Throws error if key not found183	/// @param tokenId ID of the token.184	/// @param key Property key.185	/// @return Property value bytes186	fn property(&self, token_id: uint256, key: string) -> Result<bytes> {187		let token_id: u32 = token_id.try_into().map_err(|_| "token id overflow")?;188		let key = <Vec<u8>>::from(key)189			.try_into()190			.map_err(|_| "key too long")?;191192		let props = <TokenProperties<T>>::get((self.id, token_id));193		let prop = props.get(&key).ok_or("key not found")?;194195		Ok(prop.to_vec().into())196	}197}198199#[derive(ToLog)]200pub enum ERC721Events {201	/// @dev This event emits when NFTs are created (`from` == 0) and destroyed202	///  (`to` == 0). Exception: during contract creation, any number of RFTs203	///  may be created and assigned without emitting Transfer.204	Transfer {205		#[indexed]206		from: address,207		#[indexed]208		to: address,209		#[indexed]210		token_id: uint256,211	},212	/// @dev Not supported213	Approval {214		#[indexed]215		owner: address,216		#[indexed]217		approved: address,218		#[indexed]219		token_id: uint256,220	},221	/// @dev Not supported222	#[allow(dead_code)]223	ApprovalForAll {224		#[indexed]225		owner: address,226		#[indexed]227		operator: address,228		approved: bool,229	},230}231232#[derive(ToLog)]233pub enum ERC721UniqueMintableEvents {234	/// @dev Not supported235	#[allow(dead_code)]236	MintingFinished {},237}238239#[solidity_interface(name = ERC721Metadata)]240impl<T: Config> RefungibleHandle<T>241where242	T::AccountId: From<[u8; 32]>,243{244	/// @notice A descriptive name for a collection of NFTs in this contract245	/// @dev real implementation of this function lies in `ERC721UniqueExtensions`246	#[solidity(hide, rename_selector = "name")]247	fn name_proxy(&self) -> Result<string> {248		self.name()249	}250251	/// @notice An abbreviated name for NFTs in this contract252	/// @dev real implementation of this function lies in `ERC721UniqueExtensions`253	#[solidity(hide, rename_selector = "symbol")]254	fn symbol_proxy(&self) -> Result<string> {255		self.symbol()256	}257258	/// @notice A distinct Uniform Resource Identifier (URI) for a given asset.259	///260	/// @dev If the token has a `url` property and it is not empty, it is returned.261	///  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`.262	///  If the collection property `baseURI` is empty or absent, return "" (empty string)263	///  otherwise, if token property `suffix` present and is non-empty, return concatenation of baseURI and suffix264	///  otherwise, return concatenation of `baseURI` and stringified token id (decimal stringifying, without paddings).265	///266	/// @return token's const_metadata267	#[solidity(rename_selector = "tokenURI")]268	fn token_uri(&self, token_id: uint256) -> Result<string> {269		let token_id_u32: u32 = token_id.try_into().map_err(|_| "token id overflow")?;270271		match get_token_property(self, token_id_u32, &key::url()).as_deref() {272			Err(_) | Ok("") => (),273			Ok(url) => {274				return Ok(url.into());275			}276		};277278		let base_uri =279			pallet_common::Pallet::<T>::get_collection_property(self.id, &key::base_uri())280				.map(BoundedVec::into_inner)281				.map(string::from_utf8)282				.transpose()283				.map_err(|e| {284					Error::Revert(alloc::format!(285						"Can not convert value \"baseURI\" to string with error \"{}\"",286						e287					))288				})?;289290		let base_uri = match base_uri.as_deref() {291			None | Some("") => {292				return Ok("".into());293			}294			Some(base_uri) => base_uri.into(),295		};296297		Ok(298			match get_token_property(self, token_id_u32, &key::suffix()).as_deref() {299				Err(_) | Ok("") => base_uri,300				Ok(suffix) => base_uri + suffix,301			},302		)303	}304}305306/// @title ERC-721 Non-Fungible Token Standard, optional enumeration extension307/// @dev See https://eips.ethereum.org/EIPS/eip-721308#[solidity_interface(name = ERC721Enumerable)]309impl<T: Config> RefungibleHandle<T> {310	/// @notice Enumerate valid RFTs311	/// @param index A counter less than `totalSupply()`312	/// @return The token identifier for the `index`th NFT,313	///  (sort order not specified)314	fn token_by_index(&self, index: uint256) -> Result<uint256> {315		Ok(index)316	}317318	/// Not implemented319	fn token_of_owner_by_index(&self, _owner: address, _index: uint256) -> Result<uint256> {320		// TODO: Not implemetable321		Err("not implemented".into())322	}323324	/// @notice Count RFTs tracked by this contract325	/// @return A count of valid RFTs tracked by this contract, where each one of326	///  them has an assigned and queryable owner not equal to the zero address327	fn total_supply(&self) -> Result<uint256> {328		self.consume_store_reads(1)?;329		Ok(<Pallet<T>>::total_supply(self).into())330	}331}332333/// @title ERC-721 Non-Fungible Token Standard334/// @dev See https://github.com/ethereum/EIPs/blob/master/EIPS/eip-721.md335#[solidity_interface(name = ERC721, events(ERC721Events))]336impl<T: Config> RefungibleHandle<T> {337	/// @notice Count all RFTs assigned to an owner338	/// @dev RFTs assigned to the zero address are considered invalid, and this339	///  function throws for queries about the zero address.340	/// @param owner An address for whom to query the balance341	/// @return The number of RFTs owned by `owner`, possibly zero342	fn balance_of(&self, owner: address) -> Result<uint256> {343		self.consume_store_reads(1)?;344		let owner = T::CrossAccountId::from_eth(owner);345		let balance = <AccountBalance<T>>::get((self.id, owner));346		Ok(balance.into())347	}348349	/// @notice Find the owner of an RFT350	/// @dev RFTs assigned to zero address are considered invalid, and queries351	///  about them do throw.352	///  Returns special 0xffffffffffffffffffffffffffffffffffffffff address for353	///  the tokens that are partially owned.354	/// @param tokenId The identifier for an RFT355	/// @return The address of the owner of the RFT356	fn owner_of(&self, token_id: uint256) -> Result<address> {357		self.consume_store_reads(2)?;358		let token = token_id.try_into()?;359		let owner = <Pallet<T>>::token_owner(self.id, token);360		Ok(owner361			.map(|address| *address.as_eth())362			.unwrap_or_else(|| ADDRESS_FOR_PARTIALLY_OWNED_TOKENS))363	}364365	/// @dev Not implemented366	fn safe_transfer_from_with_data(367		&mut self,368		_from: address,369		_to: address,370		_token_id: uint256,371		_data: bytes,372	) -> Result<void> {373		// TODO: Not implemetable374		Err("not implemented".into())375	}376377	/// @dev Not implemented378	fn safe_transfer_from(379		&mut self,380		_from: address,381		_to: address,382		_token_id: uint256,383	) -> Result<void> {384		// TODO: Not implemetable385		Err("not implemented".into())386	}387388	/// @notice Transfer ownership of an RFT -- THE CALLER IS RESPONSIBLE389	///  TO CONFIRM THAT `to` IS CAPABLE OF RECEIVING NFTS OR ELSE390	///  THEY MAY BE PERMANENTLY LOST391	/// @dev Throws unless `msg.sender` is the current owner or an authorized392	///  operator for this RFT. Throws if `from` is not the current owner. Throws393	///  if `to` is the zero address. Throws if `tokenId` is not a valid RFT.394	///  Throws if RFT pieces have multiple owners.395	/// @param from The current owner of the NFT396	/// @param to The new owner397	/// @param tokenId The NFT to transfer398	#[weight(<SelfWeightOf<T>>::transfer_from_creating_removing())]399	fn transfer_from(400		&mut self,401		caller: caller,402		from: address,403		to: address,404		token_id: uint256,405	) -> Result<void> {406		let caller = T::CrossAccountId::from_eth(caller);407		let from = T::CrossAccountId::from_eth(from);408		let to = T::CrossAccountId::from_eth(to);409		let token = token_id.try_into()?;410		let budget = self411			.recorder412			.weight_calls_budget(<StructureWeight<T>>::find_parent());413414		let balance = balance(&self, token, &from)?;415		ensure_single_owner(&self, token, balance)?;416417		<Pallet<T>>::transfer_from(self, &caller, &from, &to, token, balance, &budget)418			.map_err(dispatch_to_evm::<T>)?;419420		Ok(())421	}422423	/// @dev Not implemented424	fn approve(&mut self, _caller: caller, _approved: address, _token_id: uint256) -> Result<void> {425		Err("not implemented".into())426	}427428	/// @dev Not implemented429	fn set_approval_for_all(430		&mut self,431		_caller: caller,432		_operator: address,433		_approved: bool,434	) -> Result<void> {435		// TODO: Not implemetable436		Err("not implemented".into())437	}438439	/// @dev Not implemented440	fn get_approved(&self, _token_id: uint256) -> Result<address> {441		// TODO: Not implemetable442		Err("not implemented".into())443	}444445	/// @dev Not implemented446	fn is_approved_for_all(&self, _owner: address, _operator: address) -> Result<address> {447		// TODO: Not implemetable448		Err("not implemented".into())449	}450}451452/// Returns amount of pieces of `token` that `owner` have453pub fn balance<T: Config>(454	collection: &RefungibleHandle<T>,455	token: TokenId,456	owner: &T::CrossAccountId,457) -> Result<u128> {458	collection.consume_store_reads(1)?;459	let balance = <Balance<T>>::get((collection.id, token, &owner));460	Ok(balance)461}462463/// Throws if `owner_balance` is lower than total amount of `token` pieces464pub fn ensure_single_owner<T: Config>(465	collection: &RefungibleHandle<T>,466	token: TokenId,467	owner_balance: u128,468) -> Result<()> {469	collection.consume_store_reads(1)?;470	let total_supply = <TotalSupply<T>>::get((collection.id, token));471	if total_supply != owner_balance {472		return Err("token has multiple owners".into());473	}474	Ok(())475}476477/// @title ERC721 Token that can be irreversibly burned (destroyed).478#[solidity_interface(name = ERC721Burnable)]479impl<T: Config> RefungibleHandle<T> {480	/// @notice Burns a specific ERC721 token.481	/// @dev Throws unless `msg.sender` is the current RFT owner, or an authorized482	///  operator of the current owner.483	/// @param tokenId The RFT to approve484	#[weight(<SelfWeightOf<T>>::burn_item_fully())]485	fn burn(&mut self, caller: caller, token_id: uint256) -> Result<void> {486		let caller = T::CrossAccountId::from_eth(caller);487		let token = token_id.try_into()?;488489		let balance = balance(&self, token, &caller)?;490		ensure_single_owner(&self, token, balance)?;491492		<Pallet<T>>::burn(self, &caller, token, balance).map_err(dispatch_to_evm::<T>)?;493		Ok(())494	}495}496497/// @title ERC721 minting logic.498#[solidity_interface(name = ERC721UniqueMintable, events(ERC721UniqueMintableEvents))]499impl<T: Config> RefungibleHandle<T> {500	fn minting_finished(&self) -> Result<bool> {501		Ok(false)502	}503504	/// @notice Function to mint token.505	/// @param to The new owner506	/// @return uint256 The id of the newly minted token507	#[weight(<SelfWeightOf<T>>::create_item())]508	fn mint(&mut self, caller: caller, to: address) -> Result<uint256> {509		let token_id: uint256 = <TokensMinted<T>>::get(self.id)510			.checked_add(1)511			.ok_or("item id overflow")?512			.into();513		self.mint_check_id(caller, to, token_id)?;514		Ok(token_id)515	}516517	/// @notice Function to mint token.518	/// @dev `tokenId` should be obtained with `nextTokenId` method,519	///  unlike standard, you can't specify it manually520	/// @param to The new owner521	/// @param tokenId ID of the minted RFT522	#[solidity(hide, rename_selector = "mint")]523	#[weight(<SelfWeightOf<T>>::create_item())]524	fn mint_check_id(&mut self, caller: caller, to: address, token_id: uint256) -> Result<bool> {525		let caller = T::CrossAccountId::from_eth(caller);526		let to = T::CrossAccountId::from_eth(to);527		let token_id: u32 = token_id.try_into()?;528		let budget = self529			.recorder530			.weight_calls_budget(<StructureWeight<T>>::find_parent());531532		if <TokensMinted<T>>::get(self.id)533			.checked_add(1)534			.ok_or("item id overflow")?535			!= token_id536		{537			return Err("item id should be next".into());538		}539540		let users = [(to.clone(), 1)]541			.into_iter()542			.collect::<BTreeMap<_, _>>()543			.try_into()544			.unwrap();545		<Pallet<T>>::create_item(546			self,547			&caller,548			CreateItemData::<T::CrossAccountId> {549				users,550				properties: CollectionPropertiesVec::default(),551			},552			&budget,553		)554		.map_err(dispatch_to_evm::<T>)?;555556		Ok(true)557	}558559	/// @notice Function to mint token with the given tokenUri.560	/// @param to The new owner561	/// @param tokenUri Token URI that would be stored in the NFT properties562	/// @return uint256 The id of the newly minted token563	#[solidity(rename_selector = "mintWithTokenURI")]564	#[weight(<SelfWeightOf<T>>::create_item())]565	fn mint_with_token_uri(566		&mut self,567		caller: caller,568		to: address,569		token_uri: string,570	) -> Result<uint256> {571		let token_id: uint256 = <TokensMinted<T>>::get(self.id)572			.checked_add(1)573			.ok_or("item id overflow")?574			.into();575		self.mint_with_token_uri_check_id(caller, to, token_id, token_uri)?;576		Ok(token_id)577	}578579	/// @notice Function to mint token with the given tokenUri.580	/// @dev `tokenId` should be obtained with `nextTokenId` method,581	///  unlike standard, you can't specify it manually582	/// @param to The new owner583	/// @param tokenId ID of the minted RFT584	/// @param tokenUri Token URI that would be stored in the RFT properties585	#[solidity(hide, rename_selector = "mintWithTokenURI")]586	#[weight(<SelfWeightOf<T>>::create_item())]587	fn mint_with_token_uri_check_id(588		&mut self,589		caller: caller,590		to: address,591		token_id: uint256,592		token_uri: string,593	) -> Result<bool> {594		let key = key::url();595		let permission = get_token_permission::<T>(self.id, &key)?;596		if !permission.collection_admin {597			return Err("Operation is not allowed".into());598		}599600		let caller = T::CrossAccountId::from_eth(caller);601		let to = T::CrossAccountId::from_eth(to);602		let token_id: u32 = token_id.try_into().map_err(|_| "amount overflow")?;603		let budget = self604			.recorder605			.weight_calls_budget(<StructureWeight<T>>::find_parent());606607		if <TokensMinted<T>>::get(self.id)608			.checked_add(1)609			.ok_or("item id overflow")?610			!= token_id611		{612			return Err("item id should be next".into());613		}614615		let mut properties = CollectionPropertiesVec::default();616		properties617			.try_push(Property {618				key,619				value: token_uri620					.into_bytes()621					.try_into()622					.map_err(|_| "token uri is too long")?,623			})624			.map_err(|e| Error::Revert(alloc::format!("Can't add property: {:?}", e)))?;625626		let users = [(to.clone(), 1)]627			.into_iter()628			.collect::<BTreeMap<_, _>>()629			.try_into()630			.unwrap();631		<Pallet<T>>::create_item(632			self,633			&caller,634			CreateItemData::<T::CrossAccountId> { users, properties },635			&budget,636		)637		.map_err(dispatch_to_evm::<T>)?;638		Ok(true)639	}640641	/// @dev Not implemented642	fn finish_minting(&mut self, _caller: caller) -> Result<bool> {643		Err("not implementable".into())644	}645}646647fn get_token_property<T: Config>(648	collection: &CollectionHandle<T>,649	token_id: u32,650	key: &up_data_structs::PropertyKey,651) -> Result<string> {652	collection.consume_store_reads(1)?;653	let properties = <TokenProperties<T>>::try_get((collection.id, token_id))654		.map_err(|_| Error::Revert("Token properties not found".into()))?;655	if let Some(property) = properties.get(key) {656		return Ok(string::from_utf8_lossy(property).into());657	}658659	Err("Property tokenURI not found".into())660}661662fn get_token_permission<T: Config>(663	collection_id: CollectionId,664	key: &PropertyKey,665) -> Result<PropertyPermission> {666	let token_property_permissions = CollectionPropertyPermissions::<T>::try_get(collection_id)667		.map_err(|_| Error::Revert("No permissions for collection".into()))?;668	let a = token_property_permissions669		.get(key)670		.map(Clone::clone)671		.ok_or_else(|| {672			let key = string::from_utf8(key.clone().into_inner()).unwrap_or_default();673			Error::Revert(alloc::format!("No permission for key {}", key))674		})?;675	Ok(a)676}677678/// @title Unique extensions for ERC721.679#[solidity_interface(name = ERC721UniqueExtensions)]680impl<T: Config> RefungibleHandle<T>681where682	T::AccountId: From<[u8; 32]>,683{684	/// @notice A descriptive name for a collection of NFTs in this contract685	fn name(&self) -> Result<string> {686		Ok(decode_utf16(self.name.iter().copied())687			.map(|r| r.unwrap_or(REPLACEMENT_CHARACTER))688			.collect::<string>())689	}690691	/// @notice An abbreviated name for NFTs in this contract692	fn symbol(&self) -> Result<string> {693		Ok(string::from_utf8_lossy(&self.token_prefix).into())694	}695696	/// @notice Transfer ownership of an RFT697	/// @dev Throws unless `msg.sender` is the current owner. Throws if `to`698	///  is the zero address. Throws if `tokenId` is not a valid RFT.699	///  Throws if RFT pieces have multiple owners.700	/// @param to The new owner701	/// @param tokenId The RFT to transfer702	#[weight(<SelfWeightOf<T>>::transfer_creating_removing())]703	fn transfer(&mut self, caller: caller, to: address, token_id: uint256) -> Result<void> {704		let caller = T::CrossAccountId::from_eth(caller);705		let to = T::CrossAccountId::from_eth(to);706		let token = token_id.try_into()?;707		let budget = self708			.recorder709			.weight_calls_budget(<StructureWeight<T>>::find_parent());710711		let balance = balance(self, token, &caller)?;712		ensure_single_owner(self, token, balance)?;713714		<Pallet<T>>::transfer(self, &caller, &to, token, balance, &budget)715			.map_err(dispatch_to_evm::<T>)?;716		Ok(())717	}718719	/// @notice Transfer ownership of an RFT720	/// @dev Throws unless `msg.sender` is the current owner. Throws if `to`721	///  is the zero address. Throws if `tokenId` is not a valid RFT.722	///  Throws if RFT pieces have multiple owners.723	/// @param to The new owner724	/// @param tokenId The RFT to transfer725	#[weight(<SelfWeightOf<T>>::transfer_creating_removing())]726	fn transfer_from_cross(727		&mut self,728		caller: caller,729		from: (address, uint256),730		to: (address, uint256),731		token_id: uint256,732	) -> Result<void> {733		let caller = T::CrossAccountId::from_eth(caller);734		// let from = convert_tuple_to_cross_account::<T>(from)?;735		// let to = convert_tuple_to_cross_account::<T>(to)?;736		// let token_id = token_id.try_into()?;737		// let budget = self738		// 	.recorder739		// 	.weight_calls_budget(<StructureWeight<T>>::find_parent());740741		// let balance = balance(self, token_id, &from)?;742		// ensure_single_owner(self, token_id, balance)?;743744		// Pallet::<T>::transfer_from(self, &caller, &from, &to, token_id, balance, &budget)745		// 	.map_err(dispatch_to_evm::<T>)?;746		Ok(())747	}748749	/// @notice Burns a specific ERC721 token.750	/// @dev Throws unless `msg.sender` is the current owner or an authorized751	///  operator for this RFT. Throws if `from` is not the current owner. Throws752	///  if `to` is the zero address. Throws if `tokenId` is not a valid RFT.753	///  Throws if RFT pieces have multiple owners.754	/// @param from The current owner of the RFT755	/// @param tokenId The RFT to transfer756	#[weight(<SelfWeightOf<T>>::burn_from())]757	fn burn_from(&mut self, caller: caller, from: address, token_id: uint256) -> Result<void> {758		let caller = T::CrossAccountId::from_eth(caller);759		let from = T::CrossAccountId::from_eth(from);760		let token = token_id.try_into()?;761		let budget = self762			.recorder763			.weight_calls_budget(<StructureWeight<T>>::find_parent());764765		let balance = balance(self, token, &from)?;766		ensure_single_owner(self, token, balance)?;767768		<Pallet<T>>::burn_from(self, &caller, &from, token, balance, &budget)769			.map_err(dispatch_to_evm::<T>)?;770		Ok(())771	}772773	/// @notice Burns a specific ERC721 token.774	/// @dev Throws unless `msg.sender` is the current owner or an authorized775	///  operator for this RFT. Throws if `from` is not the current owner. Throws776	///  if `to` is the zero address. Throws if `tokenId` is not a valid RFT.777	///  Throws if RFT pieces have multiple owners.778	/// @param from The current owner of the RFT779	/// @param tokenId The RFT to transfer780	#[weight(<SelfWeightOf<T>>::burn_from())]781	fn burn_from_cross(782		&mut self,783		caller: caller,784		from: (address, uint256),785		token_id: uint256,786	) -> Result<void> {787		let caller = T::CrossAccountId::from_eth(caller);788		let from = convert_tuple_to_cross_account::<T>(from)?;789		let token = token_id.try_into()?;790		let budget = self791			.recorder792			.weight_calls_budget(<StructureWeight<T>>::find_parent());793794		let balance = balance(self, token, &from)?;795		ensure_single_owner(self, token, balance)?;796797		<Pallet<T>>::burn_from(self, &caller, &from, token, balance, &budget)798			.map_err(dispatch_to_evm::<T>)?;799		Ok(())800	}801802	/// @notice Returns next free RFT ID.803	fn next_token_id(&self) -> Result<uint256> {804		self.consume_store_reads(1)?;805		Ok(<TokensMinted<T>>::get(self.id)806			.checked_add(1)807			.ok_or("item id overflow")?808			.into())809	}810811	/// @notice Function to mint multiple tokens.812	/// @dev `tokenIds` should be an array of consecutive numbers and first number813	///  should be obtained with `nextTokenId` method814	/// @param to The new owner815	/// @param tokenIds IDs of the minted RFTs816	#[solidity(hide)]817	#[weight(<SelfWeightOf<T>>::create_multiple_items(token_ids.len() as u32))]818	fn mint_bulk(&mut self, caller: caller, to: address, token_ids: Vec<uint256>) -> Result<bool> {819		let caller = T::CrossAccountId::from_eth(caller);820		let to = T::CrossAccountId::from_eth(to);821		let mut expected_index = <TokensMinted<T>>::get(self.id)822			.checked_add(1)823			.ok_or("item id overflow")?;824		let budget = self825			.recorder826			.weight_calls_budget(<StructureWeight<T>>::find_parent());827828		let total_tokens = token_ids.len();829		for id in token_ids.into_iter() {830			let id: u32 = id.try_into().map_err(|_| "token id overflow")?;831			if id != expected_index {832				return Err("item id should be next".into());833			}834			expected_index = expected_index.checked_add(1).ok_or("item id overflow")?;835		}836		let users = [(to.clone(), 1)]837			.into_iter()838			.collect::<BTreeMap<_, _>>()839			.try_into()840			.unwrap();841		let create_item_data = CreateItemData::<T::CrossAccountId> {842			users,843			properties: CollectionPropertiesVec::default(),844		};845		let data = (0..total_tokens)846			.map(|_| create_item_data.clone())847			.collect();848849		<Pallet<T>>::create_multiple_items(self, &caller, data, &budget)850			.map_err(dispatch_to_evm::<T>)?;851		Ok(true)852	}853854	/// @notice Function to mint multiple tokens with the given tokenUris.855	/// @dev `tokenIds` is array of pairs of token ID and token URI. Token IDs should be consecutive856	///  numbers and first number should be obtained with `nextTokenId` method857	/// @param to The new owner858	/// @param tokens array of pairs of token ID and token URI for minted tokens859	#[solidity(hide, rename_selector = "mintBulkWithTokenURI")]860	#[weight(<SelfWeightOf<T>>::create_multiple_items(tokens.len() as u32))]861	fn mint_bulk_with_token_uri(862		&mut self,863		caller: caller,864		to: address,865		tokens: Vec<(uint256, string)>,866	) -> Result<bool> {867		let key = key::url();868		let caller = T::CrossAccountId::from_eth(caller);869		let to = T::CrossAccountId::from_eth(to);870		let mut expected_index = <TokensMinted<T>>::get(self.id)871			.checked_add(1)872			.ok_or("item id overflow")?;873		let budget = self874			.recorder875			.weight_calls_budget(<StructureWeight<T>>::find_parent());876877		let mut data = Vec::with_capacity(tokens.len());878		let users: BoundedBTreeMap<_, _, _> = [(to.clone(), 1)]879			.into_iter()880			.collect::<BTreeMap<_, _>>()881			.try_into()882			.unwrap();883		for (id, token_uri) in tokens {884			let id: u32 = id.try_into().map_err(|_| "token id overflow")?;885			if id != expected_index {886				return Err("item id should be next".into());887			}888			expected_index = expected_index.checked_add(1).ok_or("item id overflow")?;889890			let mut properties = CollectionPropertiesVec::default();891			properties892				.try_push(Property {893					key: key.clone(),894					value: token_uri895						.into_bytes()896						.try_into()897						.map_err(|_| "token uri is too long")?,898				})899				.map_err(|e| Error::Revert(alloc::format!("Can't add property: {:?}", e)))?;900901			let create_item_data = CreateItemData::<T::CrossAccountId> {902				users: users.clone(),903				properties,904			};905			data.push(create_item_data);906		}907908		<Pallet<T>>::create_multiple_items(self, &caller, data, &budget)909			.map_err(dispatch_to_evm::<T>)?;910		Ok(true)911	}912913	/// Returns EVM address for refungible token914	///915	/// @param token ID of the token916	fn token_contract_address(&self, token: uint256) -> Result<address> {917		Ok(T::EvmTokenAddressMapping::token_to_address(918			self.id,919			token.try_into().map_err(|_| "token id overflow")?,920		))921	}922}923924#[solidity_interface(925	name = UniqueRefungible,926	is(927		ERC721,928		ERC721Enumerable,929		ERC721UniqueExtensions,930		ERC721UniqueMintable,931		ERC721Burnable,932		ERC721Metadata(if(this.flags.erc721metadata)),933		Collection(via(common_mut returns CollectionHandle<T>)),934		TokenProperties,935	)936)]937impl<T: Config> RefungibleHandle<T> where T::AccountId: From<[u8; 32]> + AsRef<[u8; 32]> {}938939// Not a tests, but code generators940generate_stubgen!(gen_impl, UniqueRefungibleCall<()>, true);941generate_stubgen!(gen_iface, UniqueRefungibleCall<()>, false);942943impl<T: Config> CommonEvmHandler for RefungibleHandle<T>944where945	T::AccountId: From<[u8; 32]> + AsRef<[u8; 32]>,946{947	const CODE: &'static [u8] = include_bytes!("./stubs/UniqueRefungible.raw");948	fn call(949		self,950		handle: &mut impl PrecompileHandle,951	) -> Option<pallet_common::erc::PrecompileResult> {952		call::<T, UniqueRefungibleCall<T>, _, _>(handle, self)953	}954}