git.delta.rocks / unique-network / refs/commits / 9f4fc065e116

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::{abi::AbiType, ToLog, generate_stubgen, solidity_interface, types::*};28use frame_support::BoundedVec;29use up_data_structs::{30	TokenId, PropertyPermission, PropertyKeyPermission, Property, CollectionId, PropertyKey,31	CollectionPropertiesVec,32};33use pallet_evm_coder_substrate::{34	dispatch_to_evm, frontier_contract,35	execution::{Result, PreDispatch, Error},36};37use sp_std::{vec::Vec, vec};38use pallet_common::{39	CollectionHandle, CollectionPropertyPermissions, CommonCollectionOperations,40	erc::{CommonEvmHandler, PrecompileResult, CollectionCall, static_property::key},41	eth::{self, TokenUri},42};43use pallet_evm::{account::CrossAccountId, PrecompileHandle};44use pallet_evm_coder_substrate::call;45use pallet_structure::{SelfWeightOf as StructureWeight, weights::WeightInfo as _};46use sp_core::{U256, Get};4748use crate::{49	AccountBalance, Config, CreateItemData, NonfungibleHandle, Pallet, TokenData, TokensMinted,50	TokenProperties, SelfWeightOf, weights::WeightInfo,51};5253frontier_contract! {54	macro_rules! NonfungibleHandle_result {...}55	impl<T: Config> Contract for NonfungibleHandle<T> {...}56}5758/// @title A contract that allows to set and delete token properties and change token property permissions.59#[solidity_interface(name = TokenProperties, enum(derive(PreDispatch)), enum_attr(weight))]60impl<T: Config> NonfungibleHandle<T> {61	/// @notice Set permissions for token property.62	/// @dev Throws error if `msg.sender` is not admin or owner of the collection.63	/// @param key Property key.64	/// @param isMutable Permission to mutate property.65	/// @param collectionAdmin Permission to mutate property by collection admin if property is mutable.66	/// @param tokenOwner Permission to mutate property by token owner if property is mutable.67	#[solidity(hide)]68	#[weight(<SelfWeightOf<T>>::set_token_property_permissions(1))]69	fn set_token_property_permission(70		&mut self,71		caller: Caller,72		key: String,73		is_mutable: bool,74		collection_admin: bool,75		token_owner: bool,76	) -> Result<()> {77		let caller = T::CrossAccountId::from_eth(caller);78		<Pallet<T>>::set_token_property_permissions(79			self,80			&caller,81			vec![PropertyKeyPermission {82				key: <Vec<u8>>::from(key)83					.try_into()84					.map_err(|_| "too long key")?,85				permission: PropertyPermission {86					mutable: is_mutable,87					collection_admin,88					token_owner,89				},90			}],91		)92		.map_err(dispatch_to_evm::<T>)93	}9495	/// @notice Set permissions for token property.96	/// @dev Throws error if `msg.sender` is not admin or owner of the collection.97	/// @param permissions Permissions for keys.98	#[weight(<SelfWeightOf<T>>::set_token_property_permissions(permissions.len() as u32))]99	fn set_token_property_permissions(100		&mut self,101		caller: Caller,102		permissions: Vec<eth::TokenPropertyPermission>,103	) -> Result<()> {104		let caller = T::CrossAccountId::from_eth(caller);105		let perms = eth::TokenPropertyPermission::into_property_key_permissions(permissions)?;106107		<Pallet<T>>::set_token_property_permissions(self, &caller, perms)108			.map_err(dispatch_to_evm::<T>)109	}110111	/// @notice Get permissions for token properties.112	fn token_property_permissions(&self) -> Result<Vec<eth::TokenPropertyPermission>> {113		let perms = <Pallet<T>>::token_property_permission(self.id);114		Ok(perms115			.into_iter()116			.map(eth::TokenPropertyPermission::from)117			.collect())118	}119120	/// @notice Set token property value.121	/// @dev Throws error if `msg.sender` has no permission to edit the property.122	/// @param tokenId ID of the token.123	/// @param key Property key.124	/// @param value Property value.125	#[solidity(hide)]126	#[weight(<SelfWeightOf<T>>::set_token_properties(1))]127	fn set_property(128		&mut self,129		caller: Caller,130		token_id: U256,131		key: String,132		value: Bytes,133	) -> Result<()> {134		let caller = T::CrossAccountId::from_eth(caller);135		let token_id: u32 = token_id.try_into().map_err(|_| "token id overflow")?;136		let key = <Vec<u8>>::from(key)137			.try_into()138			.map_err(|_| "key too long")?;139		let value = value.0.try_into().map_err(|_| "value too long")?;140141		let nesting_budget = self142			.recorder143			.weight_calls_budget(<StructureWeight<T>>::find_parent());144145		<Pallet<T>>::set_token_property(146			self,147			&caller,148			TokenId(token_id),149			Property { key, value },150			&nesting_budget,151		)152		.map_err(dispatch_to_evm::<T>)153	}154155	/// @notice Set token properties value.156	/// @dev Throws error if `msg.sender` has no permission to edit the property.157	/// @param tokenId ID of the token.158	/// @param properties settable properties159	#[weight(<SelfWeightOf<T>>::set_token_properties(properties.len() as u32))]160	fn set_properties(161		&mut self,162		caller: Caller,163		token_id: U256,164		properties: Vec<eth::Property>,165	) -> Result<()> {166		let caller = T::CrossAccountId::from_eth(caller);167		let token_id: u32 = token_id.try_into().map_err(|_| "token id overflow")?;168169		let nesting_budget = self170			.recorder171			.weight_calls_budget(<StructureWeight<T>>::find_parent());172173		let properties = properties174			.into_iter()175			.map(eth::Property::try_into)176			.collect::<Result<Vec<_>>>()?;177178		<Pallet<T>>::set_token_properties(179			self,180			&caller,181			TokenId(token_id),182			properties.into_iter(),183			false,184			&nesting_budget,185		)186		.map_err(dispatch_to_evm::<T>)187	}188189	/// @notice Delete token property value.190	/// @dev Throws error if `msg.sender` has no permission to edit the property.191	/// @param tokenId ID of the token.192	/// @param key Property key.193	#[solidity(hide)]194	#[weight(<SelfWeightOf<T>>::delete_token_properties(1))]195	fn delete_property(&mut self, token_id: U256, caller: Caller, key: String) -> Result<()> {196		let caller = T::CrossAccountId::from_eth(caller);197		let token_id: u32 = token_id.try_into().map_err(|_| "token id overflow")?;198		let key = <Vec<u8>>::from(key)199			.try_into()200			.map_err(|_| "key too long")?;201202		let nesting_budget = self203			.recorder204			.weight_calls_budget(<StructureWeight<T>>::find_parent());205206		<Pallet<T>>::delete_token_property(self, &caller, TokenId(token_id), key, &nesting_budget)207			.map_err(dispatch_to_evm::<T>)208	}209210	/// @notice Delete token properties value.211	/// @dev Throws error if `msg.sender` has no permission to edit the property.212	/// @param tokenId ID of the token.213	/// @param keys Properties key.214	#[weight(<SelfWeightOf<T>>::delete_token_properties(keys.len() as u32))]215	fn delete_properties(216		&mut self,217		token_id: U256,218		caller: Caller,219		keys: Vec<String>,220	) -> Result<()> {221		let caller = T::CrossAccountId::from_eth(caller);222		let token_id: u32 = token_id.try_into().map_err(|_| "token id overflow")?;223		let keys = keys224			.into_iter()225			.map(|k| Ok(<Vec<u8>>::from(k).try_into().map_err(|_| "key too long")?))226			.collect::<Result<Vec<_>>>()?;227228		let nesting_budget = self229			.recorder230			.weight_calls_budget(<StructureWeight<T>>::find_parent());231232		<Pallet<T>>::delete_token_properties(233			self,234			&caller,235			TokenId(token_id),236			keys.into_iter(),237			&nesting_budget,238		)239		.map_err(dispatch_to_evm::<T>)240	}241242	/// @notice Get token property value.243	/// @dev Throws error if key not found244	/// @param tokenId ID of the token.245	/// @param key Property key.246	/// @return Property value bytes247	fn property(&self, token_id: U256, key: String) -> Result<Bytes> {248		let token_id: u32 = token_id.try_into().map_err(|_| "token id overflow")?;249		let key = <Vec<u8>>::from(key)250			.try_into()251			.map_err(|_| "key too long")?;252253		let props = <TokenProperties<T>>::get((self.id, token_id));254		let prop = props.get(&key).ok_or("key not found")?;255256		Ok(prop.to_vec().into())257	}258}259260#[derive(ToLog)]261pub enum ERC721Events {262	/// @dev This emits when ownership of any NFT changes by any mechanism.263	///  This event emits when NFTs are created (`from` == 0) and destroyed264	///  (`to` == 0). Exception: during contract creation, any number of NFTs265	///  may be created and assigned without emitting Transfer. At the time of266	///  any transfer, the approved address for that NFT (if any) is reset to none.267	Transfer {268		#[indexed]269		from: Address,270		#[indexed]271		to: Address,272		#[indexed]273		token_id: U256,274	},275	/// @dev This emits when the approved address for an NFT is changed or276	///  reaffirmed. The zero address indicates there is no approved address.277	///  When a Transfer event emits, this also indicates that the approved278	///  address for that NFT (if any) is reset to none.279	Approval {280		#[indexed]281		owner: Address,282		#[indexed]283		approved: Address,284		#[indexed]285		token_id: U256,286	},287	/// @dev This emits when an operator is enabled or disabled for an owner.288	///  The operator can manage all NFTs of the owner.289	#[allow(dead_code)]290	ApprovalForAll {291		#[indexed]292		owner: Address,293		#[indexed]294		operator: Address,295		approved: bool,296	},297}298299/// @title ERC-721 Non-Fungible Token Standard, optional metadata extension300/// @dev See https://eips.ethereum.org/EIPS/eip-721301#[solidity_interface(name = ERC721Metadata, expect_selector = 0x5b5e139f, enum(derive(PreDispatch)), enum_attr(weight))]302impl<T: Config> NonfungibleHandle<T>303where304	T::AccountId: From<[u8; 32]> + AsRef<[u8; 32]>,305{306	/// @notice A descriptive name for a collection of NFTs in this contract307	/// @dev real implementation of this function lies in `ERC721UniqueExtensions`308	#[solidity(hide, rename_selector = "name")]309	fn name_proxy(&self) -> String {310		self.name()311	}312313	/// @notice An abbreviated name for NFTs in this contract314	/// @dev real implementation of this function lies in `ERC721UniqueExtensions`315	#[solidity(hide, rename_selector = "symbol")]316	fn symbol_proxy(&self) -> String {317		self.symbol()318	}319320	/// @notice A distinct Uniform Resource Identifier (URI) for a given asset.321	///322	/// @dev If the token has a `url` property and it is not empty, it is returned.323	///  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`.324	///  If the collection property `baseURI` is empty or absent, return "" (empty string)325	///  otherwise, if token property `suffix` present and is non-empty, return concatenation of baseURI and suffix326	///  otherwise, return concatenation of `baseURI` and stringified token id (decimal stringifying, without paddings).327	///328	/// @return token's const_metadata329	#[solidity(rename_selector = "tokenURI")]330	fn token_uri(&self, token_id: U256) -> Result<String> {331		let token_id_u32: u32 = token_id.try_into().map_err(|_| "token id overflow")?;332333		match get_token_property(self, token_id_u32, &key::url()).as_deref() {334			Err(_) | Ok("") => (),335			Ok(url) => {336				return Ok(url.into());337			}338		};339340		let base_uri =341			pallet_common::Pallet::<T>::get_collection_property(self.id, &key::base_uri())342				.map(BoundedVec::into_inner)343				.map(String::from_utf8)344				.transpose()345				.map_err(|e| {346					Error::Revert(alloc::format!(347						"Can not convert value \"baseURI\" to string with error \"{}\"",348						e349					))350				})?;351352		let base_uri = match base_uri.as_deref() {353			None | Some("") => {354				return Ok("".into());355			}356			Some(base_uri) => base_uri.into(),357		};358359		Ok(360			match get_token_property(self, token_id_u32, &key::suffix()).as_deref() {361				Err(_) | Ok("") => base_uri,362				Ok(suffix) => base_uri + suffix,363			},364		)365	}366}367368/// @title ERC-721 Non-Fungible Token Standard, optional enumeration extension369/// @dev See https://eips.ethereum.org/EIPS/eip-721370#[solidity_interface(name = ERC721Enumerable, expect_selector = 0x780e9d63, enum(derive(PreDispatch)), enum_attr(weight))]371impl<T: Config> NonfungibleHandle<T> {372	/// @notice Enumerate valid NFTs373	/// @param index A counter less than `totalSupply()`374	/// @return The token identifier for the `index`th NFT,375	///  (sort order not specified)376	fn token_by_index(&self, index: U256) -> U256 {377		index378	}379380	/// @dev Not implemented381	fn token_of_owner_by_index(&self, _owner: Address, _index: U256) -> Result<U256> {382		// TODO: Not implemetable383		Err("not implemented".into())384	}385386	/// @notice Count NFTs tracked by this contract387	/// @return A count of valid NFTs tracked by this contract, where each one of388	///  them has an assigned and queryable owner not equal to the zero address389	fn total_supply(&self) -> Result<U256> {390		self.consume_store_reads(1)?;391		Ok(<Pallet<T>>::total_supply(self).into())392	}393}394395/// @title ERC-721 Non-Fungible Token Standard396/// @dev See https://github.com/ethereum/EIPs/blob/master/EIPS/eip-721.md397#[solidity_interface(name = ERC721, events(ERC721Events), enum(derive(PreDispatch)), enum_attr(weight), expect_selector = 0x80ac58cd)]398impl<T: Config> NonfungibleHandle<T> {399	/// @notice Count all NFTs assigned to an owner400	/// @dev NFTs assigned to the zero address are considered invalid, and this401	///  function throws for queries about the zero address.402	/// @param owner An address for whom to query the balance403	/// @return The number of NFTs owned by `owner`, possibly zero404	fn balance_of(&self, owner: Address) -> Result<U256> {405		self.consume_store_reads(1)?;406		let owner = T::CrossAccountId::from_eth(owner);407		let balance = <AccountBalance<T>>::get((self.id, owner));408		Ok(balance.into())409	}410	/// @notice Find the owner of an NFT411	/// @dev NFTs assigned to zero address are considered invalid, and queries412	///  about them do throw.413	/// @param tokenId The identifier for an NFT414	/// @return The address of the owner of the NFT415	fn owner_of(&self, token_id: U256) -> Result<Address> {416		self.consume_store_reads(1)?;417		let token: TokenId = token_id.try_into()?;418		Ok(*<TokenData<T>>::get((self.id, token))419			.ok_or("token not found")?420			.owner421			.as_eth())422	}423	/// @dev Not implemented424	#[solidity(rename_selector = "safeTransferFrom")]425	fn safe_transfer_from_with_data(426		&mut self,427		_from: Address,428		_to: Address,429		_token_id: U256,430		_data: Bytes,431	) -> Result<()> {432		// TODO: Not implemetable433		Err("not implemented".into())434	}435	/// @dev Not implemented436	fn safe_transfer_from(&mut self, _from: Address, _to: Address, _token_id: U256) -> Result<()> {437		// TODO: Not implemetable438		Err("not implemented".into())439	}440441	/// @notice Transfer ownership of an NFT -- THE CALLER IS RESPONSIBLE442	///  TO CONFIRM THAT `to` IS CAPABLE OF RECEIVING NFTS OR ELSE443	///  THEY MAY BE PERMANENTLY LOST444	/// @dev Throws unless `msg.sender` is the current owner or an authorized445	///  operator for this NFT. Throws if `from` is not the current owner. Throws446	///  if `to` is the zero address. Throws if `tokenId` is not a valid NFT.447	/// @param from The current owner of the NFT448	/// @param to The new owner449	/// @param tokenId The NFT to transfer450	#[weight(<SelfWeightOf<T>>::transfer_from())]451	fn transfer_from(452		&mut self,453		caller: Caller,454		from: Address,455		to: Address,456		token_id: U256,457	) -> Result<()> {458		let caller = T::CrossAccountId::from_eth(caller);459		let from = T::CrossAccountId::from_eth(from);460		let to = T::CrossAccountId::from_eth(to);461		let token = token_id.try_into()?;462		let budget = self463			.recorder464			.weight_calls_budget(<StructureWeight<T>>::find_parent());465466		<Pallet<T>>::transfer_from(self, &caller, &from, &to, token, &budget)467			.map_err(dispatch_to_evm::<T>)?;468		Ok(())469	}470471	/// @notice Set or reaffirm the approved address for an NFT472	/// @dev The zero address indicates there is no approved address.473	/// @dev Throws unless `msg.sender` is the current NFT owner, or an authorized474	///  operator of the current owner.475	/// @param approved The new approved NFT controller476	/// @param tokenId The NFT to approve477	#[weight(<SelfWeightOf<T>>::approve())]478	fn approve(&mut self, caller: Caller, approved: Address, token_id: U256) -> Result<()> {479		let caller = T::CrossAccountId::from_eth(caller);480		let approved = T::CrossAccountId::from_eth(approved);481		let token = token_id.try_into()?;482483		<Pallet<T>>::set_allowance(self, &caller, token, Some(&approved))484			.map_err(dispatch_to_evm::<T>)?;485		Ok(())486	}487488	/// @notice Sets or unsets the approval of a given operator.489	/// The `operator` is allowed to transfer all tokens of the `caller` on their behalf.490	/// @param operator Operator491	/// @param approved Should operator status be granted or revoked?492	#[weight(<SelfWeightOf<T>>::set_allowance_for_all())]493	fn set_approval_for_all(494		&mut self,495		caller: Caller,496		operator: Address,497		approved: bool,498	) -> Result<()> {499		let caller = T::CrossAccountId::from_eth(caller);500		let operator = T::CrossAccountId::from_eth(operator);501502		<Pallet<T>>::set_allowance_for_all(self, &caller, &operator, approved)503			.map_err(dispatch_to_evm::<T>)?;504		Ok(())505	}506507	/// @dev Not implemented508	fn get_approved(&self, _token_id: U256) -> Result<Address> {509		// TODO: Not implemetable510		Err("not implemented".into())511	}512513	/// @notice Tells whether the given `owner` approves the `operator`.514	#[weight(<SelfWeightOf<T>>::allowance_for_all())]515	fn is_approved_for_all(&self, owner: Address, operator: Address) -> Result<bool> {516		let owner = T::CrossAccountId::from_eth(owner);517		let operator = T::CrossAccountId::from_eth(operator);518519		Ok(<Pallet<T>>::allowance_for_all(self, &owner, &operator))520	}521}522523/// @title ERC721 Token that can be irreversibly burned (destroyed).524#[solidity_interface(name = ERC721Burnable, enum(derive(PreDispatch)), enum_attr(weight))]525impl<T: Config> NonfungibleHandle<T> {526	/// @notice Burns a specific ERC721 token.527	/// @dev Throws unless `msg.sender` is the current NFT owner, or an authorized528	///  operator of the current owner.529	/// @param tokenId The NFT to approve530	#[weight(<SelfWeightOf<T>>::burn_item())]531	fn burn(&mut self, caller: Caller, token_id: U256) -> Result<()> {532		let caller = T::CrossAccountId::from_eth(caller);533		let token = token_id.try_into()?;534535		<Pallet<T>>::burn(self, &caller, token).map_err(dispatch_to_evm::<T>)?;536		Ok(())537	}538}539540/// @title ERC721 minting logic.541#[solidity_interface(name = ERC721UniqueMintable, enum(derive(PreDispatch)), enum_attr(weight))]542impl<T: Config> NonfungibleHandle<T> {543	/// @notice Function to mint a token.544	/// @param to The new owner545	/// @return uint256 The id of the newly minted token546	#[weight(<SelfWeightOf<T>>::create_item())]547	fn mint(&mut self, caller: Caller, to: Address) -> Result<U256> {548		let token_id: U256 = <TokensMinted<T>>::get(self.id)549			.checked_add(1)550			.ok_or("item id overflow")?551			.into();552		self.mint_check_id(caller, to, token_id)?;553		Ok(token_id)554	}555556	/// @notice Function to mint a token.557	/// @dev `tokenId` should be obtained with `nextTokenId` method,558	///  unlike standard, you can't specify it manually559	/// @param to The new owner560	/// @param tokenId ID of the minted NFT561	#[solidity(hide, rename_selector = "mint")]562	#[weight(<SelfWeightOf<T>>::create_item())]563	fn mint_check_id(&mut self, caller: Caller, to: Address, token_id: U256) -> Result<bool> {564		let caller = T::CrossAccountId::from_eth(caller);565		let to = T::CrossAccountId::from_eth(to);566		let token_id: u32 = token_id.try_into()?;567		let budget = self568			.recorder569			.weight_calls_budget(<StructureWeight<T>>::find_parent());570571		if <TokensMinted<T>>::get(self.id)572			.checked_add(1)573			.ok_or("item id overflow")?574			!= token_id575		{576			return Err("item id should be next".into());577		}578579		<Pallet<T>>::create_item(580			self,581			&caller,582			CreateItemData::<T> {583				properties: BoundedVec::default(),584				owner: to,585			},586			&budget,587		)588		.map_err(dispatch_to_evm::<T>)?;589590		Ok(true)591	}592593	/// @notice Function to mint token with the given tokenUri.594	/// @param to The new owner595	/// @param tokenUri Token URI that would be stored in the NFT properties596	/// @return uint256 The id of the newly minted token597	#[solidity(rename_selector = "mintWithTokenURI")]598	#[weight(<SelfWeightOf<T>>::create_item() + <SelfWeightOf<T>>::set_token_properties(1))]599	fn mint_with_token_uri(600		&mut self,601		caller: Caller,602		to: Address,603		token_uri: String,604	) -> Result<U256> {605		let token_id: U256 = <TokensMinted<T>>::get(self.id)606			.checked_add(1)607			.ok_or("item id overflow")?608			.into();609		self.mint_with_token_uri_check_id(caller, to, token_id, token_uri)?;610		Ok(token_id)611	}612613	/// @notice Function to mint token with the given tokenUri.614	/// @dev `tokenId` should be obtained with `nextTokenId` method,615	///  unlike standard, you can't specify it manually616	/// @param to The new owner617	/// @param tokenId ID of the minted NFT618	/// @param tokenUri Token URI that would be stored in the NFT properties619	#[solidity(hide, rename_selector = "mintWithTokenURI")]620	#[weight(<SelfWeightOf<T>>::create_item() + <SelfWeightOf<T>>::set_token_properties(1))]621	fn mint_with_token_uri_check_id(622		&mut self,623		caller: Caller,624		to: Address,625		token_id: U256,626		token_uri: String,627	) -> Result<bool> {628		let key = key::url();629		let permission = get_token_permission::<T>(self.id, &key)?;630		if !permission.collection_admin {631			return Err("Operation is not allowed".into());632		}633634		let caller = T::CrossAccountId::from_eth(caller);635		let to = T::CrossAccountId::from_eth(to);636		let token_id: u32 = token_id.try_into().map_err(|_| "amount overflow")?;637		let budget = self638			.recorder639			.weight_calls_budget(<StructureWeight<T>>::find_parent());640641		if <TokensMinted<T>>::get(self.id)642			.checked_add(1)643			.ok_or("item id overflow")?644			!= token_id645		{646			return Err("item id should be next".into());647		}648649		let mut properties = CollectionPropertiesVec::default();650		properties651			.try_push(Property {652				key,653				value: token_uri654					.into_bytes()655					.try_into()656					.map_err(|_| "token uri is too long")?,657			})658			.map_err(|e| Error::Revert(alloc::format!("Can't add property: {:?}", e)))?;659660		<Pallet<T>>::create_item(661			self,662			&caller,663			CreateItemData::<T> {664				properties,665				owner: to,666			},667			&budget,668		)669		.map_err(dispatch_to_evm::<T>)?;670		Ok(true)671	}672}673674fn get_token_property<T: Config>(675	collection: &CollectionHandle<T>,676	token_id: u32,677	key: &up_data_structs::PropertyKey,678) -> Result<String> {679	collection.consume_store_reads(1)?;680	let properties = <TokenProperties<T>>::try_get((collection.id, token_id))681		.map_err(|_| Error::Revert("Token properties not found".into()))?;682	if let Some(property) = properties.get(key) {683		return Ok(String::from_utf8_lossy(property).into());684	}685686	Err("Property tokenURI not found".into())687}688689fn get_token_permission<T: Config>(690	collection_id: CollectionId,691	key: &PropertyKey,692) -> Result<PropertyPermission> {693	let token_property_permissions = CollectionPropertyPermissions::<T>::try_get(collection_id)694		.map_err(|_| Error::Revert("No permissions for collection".into()))?;695	let a = token_property_permissions696		.get(key)697		.map(Clone::clone)698		.ok_or_else(|| {699			let key = String::from_utf8(key.clone().into_inner()).unwrap_or_default();700			Error::Revert(alloc::format!("No permission for key {}", key))701		})?;702	Ok(a)703}704705/// @title Unique extensions for ERC721.706#[solidity_interface(name = ERC721UniqueExtensions, enum(derive(PreDispatch)), enum_attr(weight))]707impl<T: Config> NonfungibleHandle<T>708where709	T::AccountId: From<[u8; 32]> + AsRef<[u8; 32]>,710{711	/// @notice A descriptive name for a collection of NFTs in this contract712	fn name(&self) -> String {713		decode_utf16(self.name.iter().copied())714			.map(|r| r.unwrap_or(REPLACEMENT_CHARACTER))715			.collect::<String>()716	}717718	/// @notice An abbreviated name for NFTs in this contract719	fn symbol(&self) -> String {720		String::from_utf8_lossy(&self.token_prefix).into()721	}722723	/// @notice A description for the collection.724	fn description(&self) -> String {725		decode_utf16(self.description.iter().copied())726			.map(|r| r.unwrap_or(REPLACEMENT_CHARACTER))727			.collect::<String>()728	}729730	/// Returns the owner (in cross format) of the token.731	///732	/// @param tokenId Id for the token.733	fn cross_owner_of(&self, token_id: U256) -> Result<eth::CrossAddress> {734		Self::token_owner(&self, token_id.try_into()?)735			.map(|o| eth::CrossAddress::from_sub_cross_account::<T>(&o))736			.map_err(|_| Error::Revert("token not found".into()))737	}738739	/// Returns the token properties.740	///741	/// @param tokenId Id for the token.742	/// @param keys Properties keys. Empty keys for all propertyes.743	/// @return Vector of properties key/value pairs.744	fn properties(&self, token_id: U256, keys: Vec<String>) -> Result<Vec<eth::Property>> {745		let keys = keys746			.into_iter()747			.map(|key| {748				<Vec<u8>>::from(key)749					.try_into()750					.map_err(|_| Error::Revert("key too large".into()))751			})752			.collect::<Result<Vec<_>>>()?;753754		<Self as CommonCollectionOperations<T>>::token_properties(755			&self,756			token_id.try_into()?,757			if keys.is_empty() { None } else { Some(keys) },758		)759		.into_iter()760		.map(eth::Property::try_from)761		.collect::<Result<Vec<_>>>()762	}763764	/// @notice Set or reaffirm the approved address for an NFT765	/// @dev The zero address indicates there is no approved address.766	/// @dev Throws unless `msg.sender` is the current NFT owner, or an authorized767	///  operator of the current owner.768	/// @param approved The new substrate address approved NFT controller769	/// @param tokenId The NFT to approve770	#[weight(<SelfWeightOf<T>>::approve())]771	fn approve_cross(772		&mut self,773		caller: Caller,774		approved: eth::CrossAddress,775		token_id: U256,776	) -> Result<()> {777		let caller = T::CrossAccountId::from_eth(caller);778		let approved = approved.into_sub_cross_account::<T>()?;779		let token = token_id.try_into()?;780781		<Pallet<T>>::set_allowance(self, &caller, token, Some(&approved))782			.map_err(dispatch_to_evm::<T>)?;783		Ok(())784	}785786	/// @notice Transfer ownership of an NFT787	/// @dev Throws unless `msg.sender` is the current owner. Throws if `to`788	///  is the zero address. Throws if `tokenId` is not a valid NFT.789	/// @param to The new owner790	/// @param tokenId The NFT to transfer791	#[weight(<SelfWeightOf<T>>::transfer())]792	fn transfer(&mut self, caller: Caller, to: Address, token_id: U256) -> Result<()> {793		let caller = T::CrossAccountId::from_eth(caller);794		let to = T::CrossAccountId::from_eth(to);795		let token = token_id.try_into()?;796		let budget = self797			.recorder798			.weight_calls_budget(<StructureWeight<T>>::find_parent());799800		<Pallet<T>>::transfer(self, &caller, &to, token, &budget).map_err(dispatch_to_evm::<T>)?;801		Ok(())802	}803804	/// @notice Transfer ownership of an NFT805	/// @dev Throws unless `msg.sender` is the current owner. Throws if `to`806	///  is the zero address. Throws if `tokenId` is not a valid NFT.807	/// @param to The new owner808	/// @param tokenId The NFT to transfer809	#[weight(<SelfWeightOf<T>>::transfer())]810	fn transfer_cross(811		&mut self,812		caller: Caller,813		to: eth::CrossAddress,814		token_id: U256,815	) -> Result<()> {816		let caller = T::CrossAccountId::from_eth(caller);817		let to = to.into_sub_cross_account::<T>()?;818		let token = token_id.try_into()?;819		let budget = self820			.recorder821			.weight_calls_budget(<StructureWeight<T>>::find_parent());822823		<Pallet<T>>::transfer(self, &caller, &to, token, &budget).map_err(dispatch_to_evm::<T>)?;824		Ok(())825	}826827	/// @notice Transfer ownership of an NFT from cross account address to cross account address828	/// @dev Throws unless `msg.sender` is the current owner. Throws if `to`829	///  is the zero address. Throws if `tokenId` is not a valid NFT.830	/// @param from Cross acccount address of current owner831	/// @param to Cross acccount address of new owner832	/// @param tokenId The NFT to transfer833	#[weight(<SelfWeightOf<T>>::transfer())]834	fn transfer_from_cross(835		&mut self,836		caller: Caller,837		from: eth::CrossAddress,838		to: eth::CrossAddress,839		token_id: U256,840	) -> Result<()> {841		let caller = T::CrossAccountId::from_eth(caller);842		let from = from.into_sub_cross_account::<T>()?;843		let to = to.into_sub_cross_account::<T>()?;844		let token_id = token_id.try_into()?;845		let budget = self846			.recorder847			.weight_calls_budget(<StructureWeight<T>>::find_parent());848		Pallet::<T>::transfer_from(self, &caller, &from, &to, token_id, &budget)849			.map_err(dispatch_to_evm::<T>)?;850		Ok(())851	}852853	/// @notice Burns a specific ERC721 token.854	/// @dev Throws unless `msg.sender` is the current owner or an authorized855	///  operator for this NFT. Throws if `from` is not the current owner. Throws856	///  if `to` is the zero address. Throws if `tokenId` is not a valid NFT.857	/// @param from The current owner of the NFT858	/// @param tokenId The NFT to transfer859	#[solidity(hide)]860	#[weight(<SelfWeightOf<T>>::burn_from())]861	fn burn_from(&mut self, caller: Caller, from: Address, token_id: U256) -> Result<()> {862		let caller = T::CrossAccountId::from_eth(caller);863		let from = T::CrossAccountId::from_eth(from);864		let token = token_id.try_into()?;865		let budget = self866			.recorder867			.weight_calls_budget(<StructureWeight<T>>::find_parent());868869		<Pallet<T>>::burn_from(self, &caller, &from, token, &budget)870			.map_err(dispatch_to_evm::<T>)?;871		Ok(())872	}873874	/// @notice Burns a specific ERC721 token.875	/// @dev Throws unless `msg.sender` is the current owner or an authorized876	///  operator for this NFT. Throws if `from` is not the current owner. Throws877	///  if `to` is the zero address. Throws if `tokenId` is not a valid NFT.878	/// @param from The current owner of the NFT879	/// @param tokenId The NFT to transfer880	#[weight(<SelfWeightOf<T>>::burn_from())]881	fn burn_from_cross(882		&mut self,883		caller: Caller,884		from: eth::CrossAddress,885		token_id: U256,886	) -> Result<()> {887		let caller = T::CrossAccountId::from_eth(caller);888		let from = from.into_sub_cross_account::<T>()?;889		let token = token_id.try_into()?;890		let budget = self891			.recorder892			.weight_calls_budget(<StructureWeight<T>>::find_parent());893894		<Pallet<T>>::burn_from(self, &caller, &from, token, &budget)895			.map_err(dispatch_to_evm::<T>)?;896		Ok(())897	}898899	/// @notice Returns next free NFT ID.900	fn next_token_id(&self) -> Result<U256> {901		self.consume_store_reads(1)?;902		Ok(<TokensMinted<T>>::get(self.id)903			.checked_add(1)904			.ok_or("item id overflow")?905			.into())906	}907908	/// @notice Function to mint multiple tokens.909	/// @dev `tokenIds` should be an array of consecutive numbers and first number910	///  should be obtained with `nextTokenId` method911	/// @param to The new owner912	/// @param tokenIds IDs of the minted NFTs913	#[solidity(hide)]914	#[weight(<SelfWeightOf<T>>::create_multiple_items(token_ids.len() as u32))]915	fn mint_bulk(&mut self, caller: Caller, to: Address, token_ids: Vec<U256>) -> Result<bool> {916		let caller = T::CrossAccountId::from_eth(caller);917		let to = T::CrossAccountId::from_eth(to);918		let mut expected_index = <TokensMinted<T>>::get(self.id)919			.checked_add(1)920			.ok_or("item id overflow")?;921		let budget = self922			.recorder923			.weight_calls_budget(<StructureWeight<T>>::find_parent());924925		let total_tokens = token_ids.len();926		for id in token_ids.into_iter() {927			let id: u32 = id.try_into().map_err(|_| "token id overflow")?;928			if id != expected_index {929				return Err("item id should be next".into());930			}931			expected_index = expected_index.checked_add(1).ok_or("item id overflow")?;932		}933		let data = (0..total_tokens)934			.map(|_| CreateItemData::<T> {935				properties: BoundedVec::default(),936				owner: to.clone(),937			})938			.collect();939940		<Pallet<T>>::create_multiple_items(self, &caller, data, &budget)941			.map_err(dispatch_to_evm::<T>)?;942		Ok(true)943	}944945	/// @notice Function to mint multiple tokens with the given tokenUris.946	/// @dev `tokenIds` is array of pairs of token ID and token URI. Token IDs should be consecutive947	///  numbers and first number should be obtained with `nextTokenId` method948	/// @param to The new owner949	/// @param tokens array of pairs of token ID and token URI for minted tokens950	#[solidity(hide, rename_selector = "mintBulkWithTokenURI")]951	#[weight(<SelfWeightOf<T>>::create_multiple_items(tokens.len() as u32)  + <SelfWeightOf<T>>::set_token_properties(tokens.len() as u32))]952	fn mint_bulk_with_token_uri(953		&mut self,954		caller: Caller,955		to: Address,956		tokens: Vec<TokenUri>,957	) -> Result<bool> {958		let key = key::url();959		let caller = T::CrossAccountId::from_eth(caller);960		let to = T::CrossAccountId::from_eth(to);961		let mut expected_index = <TokensMinted<T>>::get(self.id)962			.checked_add(1)963			.ok_or("item id overflow")?;964		let budget = self965			.recorder966			.weight_calls_budget(<StructureWeight<T>>::find_parent());967968		let mut data = Vec::with_capacity(tokens.len());969		for TokenUri { id, uri } in tokens {970			let id: u32 = id.try_into().map_err(|_| "token id overflow")?;971			if id != expected_index {972				return Err("item id should be next".into());973			}974			expected_index = expected_index.checked_add(1).ok_or("item id overflow")?;975976			let mut properties = CollectionPropertiesVec::default();977			properties978				.try_push(Property {979					key: key.clone(),980					value: uri981						.into_bytes()982						.try_into()983						.map_err(|_| "token uri is too long")?,984				})985				.map_err(|e| Error::Revert(alloc::format!("Can't add property: {:?}", e)))?;986987			data.push(CreateItemData::<T> {988				properties,989				owner: to.clone(),990			});991		}992993		<Pallet<T>>::create_multiple_items(self, &caller, data, &budget)994			.map_err(dispatch_to_evm::<T>)?;995		Ok(true)996	}997998	/// @notice Function to mint a token.999	/// @param to The new owner crossAccountId1000	/// @param properties Properties of minted token1001	/// @return uint256 The id of the newly minted token1002	#[weight(<SelfWeightOf<T>>::create_item() + <SelfWeightOf<T>>::set_token_properties(properties.len() as u32))]1003	fn mint_cross(1004		&mut self,1005		caller: Caller,1006		to: eth::CrossAddress,1007		properties: Vec<eth::Property>,1008	) -> Result<U256> {1009		let token_id = <TokensMinted<T>>::get(self.id)1010			.checked_add(1)1011			.ok_or("item id overflow")?;10121013		let to = to.into_sub_cross_account::<T>()?;10141015		let properties = properties1016			.into_iter()1017			.map(eth::Property::try_into)1018			.collect::<Result<Vec<_>>>()?1019			.try_into()1020			.map_err(|_| Error::Revert(alloc::format!("too many properties")))?;10211022		let caller = T::CrossAccountId::from_eth(caller);10231024		let budget = self1025			.recorder1026			.weight_calls_budget(<StructureWeight<T>>::find_parent());10271028		<Pallet<T>>::create_item(1029			self,1030			&caller,1031			CreateItemData::<T> {1032				properties,1033				owner: to,1034			},1035			&budget,1036		)1037		.map_err(dispatch_to_evm::<T>)?;10381039		Ok(token_id.into())1040	}10411042	/// @notice Returns collection helper contract address1043	fn collection_helper_address(&self) -> Address {1044		T::ContractAddress::get()1045	}1046}10471048#[solidity_interface(1049	name = UniqueNFT,1050	is(1051		ERC721,1052		ERC721Enumerable,1053		ERC721UniqueExtensions,1054		ERC721UniqueMintable,1055		ERC721Burnable,1056		ERC721Metadata(if(this.flags.erc721metadata)),1057		Collection(via(common_mut returns CollectionHandle<T>)),1058		TokenProperties,1059	),1060	enum(derive(PreDispatch)),1061)]1062impl<T: Config> NonfungibleHandle<T> where T::AccountId: From<[u8; 32]> + AsRef<[u8; 32]> {}10631064// Not a tests, but code generators1065generate_stubgen!(gen_impl, UniqueNFTCall<()>, true);1066generate_stubgen!(gen_iface, UniqueNFTCall<()>, false);10671068impl<T: Config> CommonEvmHandler for NonfungibleHandle<T>1069where1070	T::AccountId: From<[u8; 32]> + AsRef<[u8; 32]>,1071{1072	const CODE: &'static [u8] = include_bytes!("./stubs/UniqueNFT.raw");10731074	fn call(self, handle: &mut impl PrecompileHandle) -> Option<PrecompileResult> {1075		call::<T, UniqueNFTCall<T>, _, _>(handle, self)1076	}1077}