git.delta.rocks / unique-network / refs/commits / c31b5ba3b03c

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#![cfg_attr(not(feature = "std"), no_std)]1819use core::ops::{Deref, DerefMut};20use pallet_evm_coder_substrate::{SubstrateRecorder, WithRecorder};21use sp_std::vec::Vec;22use pallet_evm::account::CrossAccountId;23use frame_support::{24	dispatch::{DispatchErrorWithPostInfo, DispatchResultWithPostInfo, Weight, PostDispatchInfo},25	ensure, fail,26	traits::{Imbalance, Get, Currency, WithdrawReasons, ExistenceRequirement},27	BoundedVec,28	weights::Pays,29};30use pallet_evm::GasWeightMapping;31use up_data_structs::{32	COLLECTION_NUMBER_LIMIT, Collection, CollectionId, CreateItemData, MAX_TOKEN_PREFIX_LENGTH,33	COLLECTION_ADMINS_LIMIT, MetaUpdatePermission, TokenId, CollectionStats, MAX_TOKEN_OWNERSHIP,34	CollectionMode, NFT_SPONSOR_TRANSFER_TIMEOUT, FUNGIBLE_SPONSOR_TRANSFER_TIMEOUT,35	REFUNGIBLE_SPONSOR_TRANSFER_TIMEOUT, MAX_SPONSOR_TIMEOUT, CUSTOM_DATA_LIMIT, CollectionLimits,36	CustomDataLimit, CreateCollectionData, SponsorshipState, CreateItemExData, SponsoringRateLimit,37};38pub use pallet::*;39use sp_core::H160;40use sp_runtime::{ArithmeticError, DispatchError, DispatchResult};41#[cfg(feature = "runtime-benchmarks")]42pub mod benchmarking;43pub mod dispatch;44pub mod erc;45pub mod eth;4647#[must_use = "Should call submit_logs or save, otherwise some data will be lost for evm side"]48pub struct CollectionHandle<T: Config> {49	pub id: CollectionId,50	collection: Collection<T::AccountId>,51	pub recorder: SubstrateRecorder<T>,52}53impl<T: Config> WithRecorder<T> for CollectionHandle<T> {54	fn recorder(&self) -> &SubstrateRecorder<T> {55		&self.recorder56	}57	fn into_recorder(self) -> SubstrateRecorder<T> {58		self.recorder59	}60}61impl<T: Config> CollectionHandle<T> {62	pub fn new_with_gas_limit(id: CollectionId, gas_limit: u64) -> Option<Self> {63		<CollectionById<T>>::get(id).map(|collection| Self {64			id,65			collection,66			recorder: SubstrateRecorder::new(eth::collection_id_to_address(id), gas_limit),67		})68	}69	pub fn new(id: CollectionId) -> Option<Self> {70		Self::new_with_gas_limit(id, u64::MAX)71	}72	pub fn try_get(id: CollectionId) -> Result<Self, DispatchError> {73		Ok(Self::new(id).ok_or(<Error<T>>::CollectionNotFound)?)74	}75	pub fn log_mirrored(&self, log: impl evm_coder::ToLog) {76		self.recorder.log_mirrored(log)77	}78	pub fn log_direct(&self, log: impl evm_coder::ToLog) {79		self.recorder.log_direct(log)80	}81	pub fn consume_store_reads(&self, reads: u64) -> evm_coder::execution::Result<()> {82		self.recorder83			.consume_gas(T::GasWeightMapping::weight_to_gas(84				<T as frame_system::Config>::DbWeight::get()85					.read86					.saturating_mul(reads),87			))88	}89	pub fn consume_store_writes(&self, writes: u64) -> evm_coder::execution::Result<()> {90		self.recorder91			.consume_gas(T::GasWeightMapping::weight_to_gas(92				<T as frame_system::Config>::DbWeight::get()93					.write94					.saturating_mul(writes),95			))96	}97	pub fn submit_logs(self) {98		self.recorder.submit_logs()99	}100	pub fn save(self) -> DispatchResult {101		self.recorder.submit_logs();102		<CollectionById<T>>::insert(self.id, self.collection);103		Ok(())104	}105}106impl<T: Config> Deref for CollectionHandle<T> {107	type Target = Collection<T::AccountId>;108109	fn deref(&self) -> &Self::Target {110		&self.collection111	}112}113114impl<T: Config> DerefMut for CollectionHandle<T> {115	fn deref_mut(&mut self) -> &mut Self::Target {116		&mut self.collection117	}118}119120impl<T: Config> CollectionHandle<T> {121	pub fn check_is_owner(&self, subject: &T::CrossAccountId) -> DispatchResult {122		ensure!(*subject.as_sub() == self.owner, <Error<T>>::NoPermission);123		Ok(())124	}125	pub fn is_owner_or_admin(&self, subject: &T::CrossAccountId) -> bool {126		*subject.as_sub() == self.owner || <IsAdmin<T>>::get((self.id, subject))127	}128	pub fn check_is_owner_or_admin(&self, subject: &T::CrossAccountId) -> DispatchResult {129		ensure!(self.is_owner_or_admin(subject), <Error<T>>::NoPermission);130		Ok(())131	}132	pub fn ignores_allowance(&self, user: &T::CrossAccountId) -> bool {133		self.limits.owner_can_transfer() && self.is_owner_or_admin(user)134	}135	pub fn ignores_owned_amount(&self, user: &T::CrossAccountId) -> bool {136		self.limits.owner_can_transfer() && self.is_owner_or_admin(user)137	}138	pub fn check_allowlist(&self, user: &T::CrossAccountId) -> DispatchResult {139		ensure!(140			<Allowlist<T>>::get((self.id, user)),141			<Error<T>>::AddressNotInAllowlist142		);143		Ok(())144	}145146	pub fn check_can_update_meta(147		&self,148		subject: &T::CrossAccountId,149		item_owner: &T::CrossAccountId,150	) -> DispatchResult {151		match self.meta_update_permission {152			MetaUpdatePermission::ItemOwner => {153				ensure!(subject == item_owner, <Error<T>>::NoPermission);154				Ok(())155			}156			MetaUpdatePermission::Admin => self.check_is_owner_or_admin(subject),157			MetaUpdatePermission::None => fail!(<Error<T>>::NoPermission),158		}159	}160}161162#[frame_support::pallet]163pub mod pallet {164	use super::*;165	use frame_support::{Blake2_128Concat, pallet_prelude::*, storage::Key};166	use pallet_evm::account;167	use dispatch::CollectionDispatch;168	use frame_support::{Blake2_128Concat, pallet_prelude::*, storage::Key, traits::StorageVersion};169	use frame_system::pallet_prelude::*;170	use frame_support::traits::Currency;171	use up_data_structs::{TokenId, mapping::TokenAddressMapping};172	use scale_info::TypeInfo;173	use up_evm_mapping::CrossAccountId;174175	#[pallet::config]176	pub trait Config:177		frame_system::Config + pallet_evm_coder_substrate::Config + TypeInfo + account::Config178	{179		type Event: IsType<<Self as frame_system::Config>::Event> + From<Event<Self>>;180181		type Currency: Currency<Self::AccountId>;182183		#[pallet::constant]184		type CollectionCreationPrice: Get<185			<<Self as Config>::Currency as Currency<Self::AccountId>>::Balance,186		>;187		type CollectionDispatch: CollectionDispatch<Self>;188189		type TreasuryAccountId: Get<Self::AccountId>;190191		type EvmTokenAddressMapping: TokenAddressMapping<H160>;192		type CrossTokenAddressMapping: TokenAddressMapping<Self::CrossAccountId>;193	}194195	const STORAGE_VERSION: StorageVersion = StorageVersion::new(1);196197	#[pallet::pallet]198	#[pallet::storage_version(STORAGE_VERSION)]199	#[pallet::generate_store(pub(super) trait Store)]200	pub struct Pallet<T>(_);201202	#[pallet::extra_constants]203	impl<T: Config> Pallet<T> {204		pub fn collection_admins_limit() -> u32 {205			COLLECTION_ADMINS_LIMIT206		}207	}208209	#[pallet::event]210	#[pallet::generate_deposit(pub fn deposit_event)]211	pub enum Event<T: Config> {212		/// New collection was created213		///214		/// # Arguments215		///216		/// * collection_id: Globally unique identifier of newly created collection.217		///218		/// * mode: [CollectionMode] converted into u8.219		///220		/// * account_id: Collection owner.221		CollectionCreated(CollectionId, u8, T::AccountId),222223		/// New collection was destroyed224		///225		/// # Arguments226		///227		/// * collection_id: Globally unique identifier of collection.228		CollectionDestroyed(CollectionId),229230		/// New item was created.231		///232		/// # Arguments233		///234		/// * collection_id: Id of the collection where item was created.235		///236		/// * item_id: Id of an item. Unique within the collection.237		///238		/// * recipient: Owner of newly created item239		///240		/// * amount: Always 1 for NFT241		ItemCreated(CollectionId, TokenId, T::CrossAccountId, u128),242243		/// Collection item was burned.244		///245		/// # Arguments246		///247		/// * collection_id.248		///249		/// * item_id: Identifier of burned NFT.250		///251		/// * owner: which user has destroyed its tokens252		///253		/// * amount: Always 1 for NFT254		ItemDestroyed(CollectionId, TokenId, T::CrossAccountId, u128),255256		/// Item was transferred257		///258		/// * collection_id: Id of collection to which item is belong259		///260		/// * item_id: Id of an item261		///262		/// * sender: Original owner of item263		///264		/// * recipient: New owner of item265		///266		/// * amount: Always 1 for NFT267		Transfer(268			CollectionId,269			TokenId,270			T::CrossAccountId,271			T::CrossAccountId,272			u128,273		),274275		/// * collection_id276		///277		/// * item_id278		///279		/// * sender280		///281		/// * spender282		///283		/// * amount284		Approved(285			CollectionId,286			TokenId,287			T::CrossAccountId,288			T::CrossAccountId,289			u128,290		),291	}292293	#[pallet::error]294	pub enum Error<T> {295		/// This collection does not exist.296		CollectionNotFound,297		/// Sender parameter and item owner must be equal.298		MustBeTokenOwner,299		/// No permission to perform action300		NoPermission,301		/// Collection is not in mint mode.302		PublicMintingNotAllowed,303		/// Address is not in allow list.304		AddressNotInAllowlist,305306		/// Collection name can not be longer than 63 char.307		CollectionNameLimitExceeded,308		/// Collection description can not be longer than 255 char.309		CollectionDescriptionLimitExceeded,310		/// Token prefix can not be longer than 15 char.311		CollectionTokenPrefixLimitExceeded,312		/// Total collections bound exceeded.313		TotalCollectionsLimitExceeded,314		/// variable_data exceeded data limit.315		TokenVariableDataLimitExceeded,316		/// Exceeded max admin count317		CollectionAdminCountExceeded,318		/// Collection limit bounds per collection exceeded319		CollectionLimitBoundsExceeded,320		/// Tried to enable permissions which are only permitted to be disabled321		OwnerPermissionsCantBeReverted,322323		/// Collection settings not allowing items transferring324		TransferNotAllowed,325		/// Account token limit exceeded per collection326		AccountTokenLimitExceeded,327		/// Collection token limit exceeded328		CollectionTokenLimitExceeded,329		/// Metadata flag frozen330		MetadataFlagFrozen,331332		/// Item not exists.333		TokenNotFound,334		/// Item balance not enough.335		TokenValueTooLow,336		/// Requested value more than approved.337		ApprovedValueTooLow,338		/// Tried to approve more than owned339		CantApproveMoreThanOwned,340341		/// Can't transfer tokens to ethereum zero address342		AddressIsZero,343		/// Target collection doesn't supports this operation344		UnsupportedOperation,345346		/// Not sufficient founds to perform action347		NotSufficientFounds,348	}349350	#[pallet::storage]351	pub type CreatedCollectionCount<T> = StorageValue<Value = CollectionId, QueryKind = ValueQuery>;352	#[pallet::storage]353	pub type DestroyedCollectionCount<T> =354		StorageValue<Value = CollectionId, QueryKind = ValueQuery>;355356	/// Collection info357	#[pallet::storage]358	pub type CollectionById<T> = StorageMap<359		Hasher = Blake2_128Concat,360		Key = CollectionId,361		Value = Collection<<T as frame_system::Config>::AccountId>,362		QueryKind = OptionQuery,363	>;364365	#[pallet::storage]366	pub type AdminAmount<T> = StorageMap<367		Hasher = Blake2_128Concat,368		Key = CollectionId,369		Value = u32,370		QueryKind = ValueQuery,371	>;372373	/// List of collection admins374	#[pallet::storage]375	pub type IsAdmin<T: Config> = StorageNMap<376		Key = (377			Key<Blake2_128Concat, CollectionId>,378			Key<Blake2_128Concat, T::CrossAccountId>,379		),380		Value = bool,381		QueryKind = ValueQuery,382	>;383384	/// Allowlisted collection users385	#[pallet::storage]386	pub type Allowlist<T: Config> = StorageNMap<387		Key = (388			Key<Blake2_128Concat, CollectionId>,389			Key<Blake2_128Concat, T::CrossAccountId>,390		),391		Value = bool,392		QueryKind = ValueQuery,393	>;394395	/// Not used by code, exists only to provide some types to metadata396	#[pallet::storage]397	pub type DummyStorageValue<T> =398		StorageValue<Value = (CollectionStats, CollectionId, TokenId), QueryKind = OptionQuery>;399400	#[pallet::hooks]401	impl<T: Config> Hooks<BlockNumberFor<T>> for Pallet<T> {402		fn on_runtime_upgrade() -> Weight {403			let mut weight = 0;404405			if StorageVersion::get::<Pallet<T>>() < StorageVersion::new(1) {406				use up_data_structs::{CollectionVersion1, CollectionVersion2};407				<CollectionById<T>>::translate_values::<CollectionVersion1<T::AccountId>, _>(|v| {408					Some(CollectionVersion2::from(v))409				});410			}411412			weight413		}414	}415}416417impl<T: Config> Pallet<T> {418	/// Ethereum receiver 0x0000000000000000000000000000000000000000 is reserved, and shouldn't own tokens419	pub fn ensure_correct_receiver(receiver: &T::CrossAccountId) -> DispatchResult {420		ensure!(421			&T::CrossAccountId::from_eth(H160([0; 20])) != receiver,422			<Error<T>>::AddressIsZero423		);424		Ok(())425	}426	pub fn adminlist(collection: CollectionId) -> Vec<T::CrossAccountId> {427		<IsAdmin<T>>::iter_prefix((collection,))428			.map(|(a, _)| a)429			.collect()430	}431	pub fn allowlist(collection: CollectionId) -> Vec<T::CrossAccountId> {432		<Allowlist<T>>::iter_prefix((collection,))433			.map(|(a, _)| a)434			.collect()435	}436	pub fn allowed(collection: CollectionId, user: T::CrossAccountId) -> bool {437		<Allowlist<T>>::get((collection, user))438	}439	pub fn collection_stats() -> CollectionStats {440		let created = <CreatedCollectionCount<T>>::get();441		let destroyed = <DestroyedCollectionCount<T>>::get();442		CollectionStats {443			created: created.0,444			destroyed: destroyed.0,445			alive: created.0 - destroyed.0,446		}447	}448449	pub fn effective_collection_limits(collection: CollectionId) -> Option<CollectionLimits> {450		let collection = <CollectionById<T>>::get(collection);451		if collection.is_none() {452			return None;453		}454455		let collection = collection.unwrap();456		let limits = collection.limits;457		let effective_limits = CollectionLimits {458			account_token_ownership_limit: Some(limits.account_token_ownership_limit()),459			sponsored_data_size: Some(limits.sponsored_data_size()),460			sponsored_data_rate_limit: Some(461				limits462					.sponsored_data_rate_limit463					.unwrap_or(SponsoringRateLimit::SponsoringDisabled),464			),465			token_limit: Some(limits.token_limit()),466			sponsor_transfer_timeout: Some(limits.sponsor_transfer_timeout(467				match collection.mode {468					CollectionMode::NFT => NFT_SPONSOR_TRANSFER_TIMEOUT,469					CollectionMode::Fungible(_) => FUNGIBLE_SPONSOR_TRANSFER_TIMEOUT,470					CollectionMode::ReFungible => REFUNGIBLE_SPONSOR_TRANSFER_TIMEOUT,471				},472			)),473			sponsor_approve_timeout: Some(limits.sponsor_approve_timeout()),474			owner_can_transfer: Some(limits.owner_can_transfer()),475			owner_can_destroy: Some(limits.owner_can_destroy()),476			transfers_enabled: Some(limits.transfers_enabled()),477		};478479		Some(effective_limits)480	}481}482483impl<T: Config> Pallet<T> {484	pub fn init_collection(485		owner: T::AccountId,486		data: CreateCollectionData<T::AccountId>,487	) -> Result<CollectionId, DispatchError> {488		{489			ensure!(490				data.token_prefix.len() <= MAX_TOKEN_PREFIX_LENGTH as usize,491				Error::<T>::CollectionTokenPrefixLimitExceeded492			);493		}494495		let created_count = <CreatedCollectionCount<T>>::get()496			.0497			.checked_add(1)498			.ok_or(ArithmeticError::Overflow)?;499		let destroyed_count = <DestroyedCollectionCount<T>>::get().0;500		let id = CollectionId(created_count);501502		// bound Total number of collections503		ensure!(504			created_count - destroyed_count <= COLLECTION_NUMBER_LIMIT,505			<Error<T>>::TotalCollectionsLimitExceeded506		);507508		// =========509510		let collection = Collection {511			owner: owner.clone(),512			name: data.name,513			mode: data.mode.clone(),514			mint_mode: false,515			access: data.access.unwrap_or_default(),516			description: data.description,517			token_prefix: data.token_prefix,518			offchain_schema: data.offchain_schema,519			schema_version: data.schema_version.unwrap_or_default(),520			sponsorship: data521				.pending_sponsor522				.map(SponsorshipState::Unconfirmed)523				.unwrap_or_default(),524			variable_on_chain_schema: data.variable_on_chain_schema,525			const_on_chain_schema: data.const_on_chain_schema,526			limits: data527				.limits528				.map(|limits| Self::clamp_limits(data.mode.clone(), &Default::default(), limits))529				.unwrap_or_else(|| Ok(CollectionLimits::default()))?,530			meta_update_permission: data.meta_update_permission.unwrap_or_default(),531		};532533		// Take a (non-refundable) deposit of collection creation534		{535			let mut imbalance =536				<<<T as Config>::Currency as Currency<T::AccountId>>::PositiveImbalance>::zero();537			imbalance.subsume(538				<<T as Config>::Currency as Currency<T::AccountId>>::deposit_creating(539					&T::TreasuryAccountId::get(),540					T::CollectionCreationPrice::get(),541				),542			);543			<T as Config>::Currency::settle(544				&owner,545				imbalance,546				WithdrawReasons::TRANSFER,547				ExistenceRequirement::KeepAlive,548			)549			.map_err(|_| Error::<T>::NotSufficientFounds)?;550		}551552		<CreatedCollectionCount<T>>::put(created_count);553		<Pallet<T>>::deposit_event(Event::CollectionCreated(id, data.mode.id(), owner.clone()));554		<CollectionById<T>>::insert(id, collection);555		Ok(id)556	}557558	pub fn destroy_collection(559		collection: CollectionHandle<T>,560		sender: &T::CrossAccountId,561	) -> DispatchResult {562		ensure!(563			collection.limits.owner_can_destroy(),564			<Error<T>>::NoPermission,565		);566		collection.check_is_owner(sender)?;567568		let destroyed_collections = <DestroyedCollectionCount<T>>::get()569			.0570			.checked_add(1)571			.ok_or(ArithmeticError::Overflow)?;572573		// =========574575		<DestroyedCollectionCount<T>>::put(destroyed_collections);576		<CollectionById<T>>::remove(collection.id);577		<AdminAmount<T>>::remove(collection.id);578		<IsAdmin<T>>::remove_prefix((collection.id,), None);579		<Allowlist<T>>::remove_prefix((collection.id,), None);580581		<Pallet<T>>::deposit_event(Event::CollectionDestroyed(collection.id));582		Ok(())583	}584585	pub fn toggle_allowlist(586		collection: &CollectionHandle<T>,587		sender: &T::CrossAccountId,588		user: &T::CrossAccountId,589		allowed: bool,590	) -> DispatchResult {591		collection.check_is_owner_or_admin(sender)?;592593		// =========594595		if allowed {596			<Allowlist<T>>::insert((collection.id, user), true);597		} else {598			<Allowlist<T>>::remove((collection.id, user));599		}600601		Ok(())602	}603604	pub fn toggle_admin(605		collection: &CollectionHandle<T>,606		sender: &T::CrossAccountId,607		user: &T::CrossAccountId,608		admin: bool,609	) -> DispatchResult {610		collection.check_is_owner_or_admin(sender)?;611612		let was_admin = <IsAdmin<T>>::get((collection.id, user));613		if was_admin == admin {614			return Ok(());615		}616		let amount = <AdminAmount<T>>::get(collection.id);617618		if admin {619			let amount = amount620				.checked_add(1)621				.ok_or(<Error<T>>::CollectionAdminCountExceeded)?;622			ensure!(623				amount <= Self::collection_admins_limit(),624				<Error<T>>::CollectionAdminCountExceeded,625			);626627			// =========628629			<AdminAmount<T>>::insert(collection.id, amount);630			<IsAdmin<T>>::insert((collection.id, user), true);631		} else {632			<AdminAmount<T>>::insert(collection.id, amount.saturating_sub(1));633			<IsAdmin<T>>::remove((collection.id, user));634		}635636		Ok(())637	}638639	pub fn clamp_limits(640		mode: CollectionMode,641		old_limit: &CollectionLimits,642		mut new_limit: CollectionLimits,643	) -> Result<CollectionLimits, DispatchError> {644		macro_rules! limit_default {645				($old:ident, $new:ident, $($field:ident $(($arg:expr))? => $check:expr),* $(,)?) => {{646					$(647						if let Some($new) = $new.$field {648							let $old = $old.$field($($arg)?);649							let _ = $new;650							let _ = $old;651							$check652						} else {653							$new.$field = $old.$field654						}655					)*656				}};657			}658659		limit_default!(old_limit, new_limit,660			account_token_ownership_limit => ensure!(661				new_limit <= MAX_TOKEN_OWNERSHIP,662				<Error<T>>::CollectionLimitBoundsExceeded,663			),664			sponsor_transfer_timeout(match mode {665				CollectionMode::NFT => NFT_SPONSOR_TRANSFER_TIMEOUT,666				CollectionMode::Fungible(_) => FUNGIBLE_SPONSOR_TRANSFER_TIMEOUT,667				CollectionMode::ReFungible => REFUNGIBLE_SPONSOR_TRANSFER_TIMEOUT,668			}) => ensure!(669				new_limit <= MAX_SPONSOR_TIMEOUT,670				<Error<T>>::CollectionLimitBoundsExceeded,671			),672			sponsored_data_size => ensure!(673				new_limit <= CUSTOM_DATA_LIMIT,674				<Error<T>>::CollectionLimitBoundsExceeded,675			),676			token_limit => ensure!(677				old_limit >= new_limit && new_limit > 0,678				<Error<T>>::CollectionTokenLimitExceeded679			),680			owner_can_transfer => ensure!(681				old_limit || !new_limit,682				<Error<T>>::OwnerPermissionsCantBeReverted,683			),684			owner_can_destroy => ensure!(685				old_limit || !new_limit,686				<Error<T>>::OwnerPermissionsCantBeReverted,687			),688			sponsored_data_rate_limit => {},689			transfers_enabled => {},690		);691		Ok(new_limit)692	}693}694695#[macro_export]696macro_rules! unsupported {697	() => {698		Err(<Error<T>>::UnsupportedOperation.into())699	};700}701702/// Worst cases703pub trait CommonWeightInfo<CrossAccountId> {704	fn create_item() -> Weight;705	fn create_multiple_items(amount: u32) -> Weight;706	fn create_multiple_items_ex(cost: &CreateItemExData<CrossAccountId>) -> Weight;707	fn burn_item() -> Weight;708	fn transfer() -> Weight;709	fn approve() -> Weight;710	fn transfer_from() -> Weight;711	fn burn_from() -> Weight;712	fn set_variable_metadata(bytes: u32) -> Weight;713}714715pub trait CommonCollectionOperations<T: Config> {716	fn create_item(717		&self,718		sender: T::CrossAccountId,719		to: T::CrossAccountId,720		data: CreateItemData,721	) -> DispatchResultWithPostInfo;722	fn create_multiple_items(723		&self,724		sender: T::CrossAccountId,725		to: T::CrossAccountId,726		data: Vec<CreateItemData>,727	) -> DispatchResultWithPostInfo;728	fn create_multiple_items_ex(729		&self,730		sender: T::CrossAccountId,731		data: CreateItemExData<T::CrossAccountId>,732	) -> DispatchResultWithPostInfo;733	fn burn_item(734		&self,735		sender: T::CrossAccountId,736		token: TokenId,737		amount: u128,738	) -> DispatchResultWithPostInfo;739740	fn transfer(741		&self,742		sender: T::CrossAccountId,743		to: T::CrossAccountId,744		token: TokenId,745		amount: u128,746	) -> DispatchResultWithPostInfo;747	fn approve(748		&self,749		sender: T::CrossAccountId,750		spender: T::CrossAccountId,751		token: TokenId,752		amount: u128,753	) -> DispatchResultWithPostInfo;754	fn transfer_from(755		&self,756		sender: T::CrossAccountId,757		from: T::CrossAccountId,758		to: T::CrossAccountId,759		token: TokenId,760		amount: u128,761	) -> DispatchResultWithPostInfo;762	fn burn_from(763		&self,764		sender: T::CrossAccountId,765		from: T::CrossAccountId,766		token: TokenId,767		amount: u128,768	) -> DispatchResultWithPostInfo;769770	fn set_variable_metadata(771		&self,772		sender: T::CrossAccountId,773		token: TokenId,774		data: BoundedVec<u8, CustomDataLimit>,775	) -> DispatchResultWithPostInfo;776777	fn account_tokens(&self, account: T::CrossAccountId) -> Vec<TokenId>;778	fn token_exists(&self, token: TokenId) -> bool;779	fn last_token_id(&self) -> TokenId;780781	fn token_owner(&self, token: TokenId) -> Option<T::CrossAccountId>;782	fn const_metadata(&self, token: TokenId) -> Vec<u8>;783	fn variable_metadata(&self, token: TokenId) -> Vec<u8>;784785	/// How many tokens collection contains (Applicable to nonfungible/refungible)786	fn collection_tokens(&self) -> u32;787	/// Amount of different tokens account has (Applicable to nonfungible/refungible)788	fn account_balance(&self, account: T::CrossAccountId) -> u32;789	/// Amount of specific token account have (Applicable to fungible/refungible)790	fn balance(&self, account: T::CrossAccountId, token: TokenId) -> u128;791	fn allowance(792		&self,793		sender: T::CrossAccountId,794		spender: T::CrossAccountId,795		token: TokenId,796	) -> u128;797}798799// Flexible enough for implementing CommonCollectionOperations800pub fn with_weight(res: DispatchResult, weight: Weight) -> DispatchResultWithPostInfo {801	let post_info = PostDispatchInfo {802		actual_weight: Some(weight),803		pays_fee: Pays::Yes,804	};805	match res {806		Ok(()) => Ok(post_info),807		Err(error) => Err(DispatchErrorWithPostInfo { post_info, error }),808	}809}