git.delta.rocks / unique-network / refs/commits / 3db55eb8a3c0

difftreelog

feat nest on create/transfer

Yaroslav Bolyukin2022-04-07parent: #b69837d.patch.diff
in: master

12 files changed

modifiedpallets/common/src/lib.rsdiffbeforeafterboth
--- a/pallets/common/src/lib.rs
+++ b/pallets/common/src/lib.rs
@@ -723,17 +723,20 @@
 		sender: T::CrossAccountId,
 		to: T::CrossAccountId,
 		data: CreateItemData,
+		nesting_budget: &dyn Budget,
 	) -> DispatchResultWithPostInfo;
 	fn create_multiple_items(
 		&self,
 		sender: T::CrossAccountId,
 		to: T::CrossAccountId,
 		data: Vec<CreateItemData>,
+		nesting_budget: &dyn Budget,
 	) -> DispatchResultWithPostInfo;
 	fn create_multiple_items_ex(
 		&self,
 		sender: T::CrossAccountId,
 		data: CreateItemExData<T::CrossAccountId>,
+		nesting_budget: &dyn Budget,
 	) -> DispatchResultWithPostInfo;
 	fn burn_item(
 		&self,
@@ -748,6 +751,7 @@
 		to: T::CrossAccountId,
 		token: TokenId,
 		amount: u128,
+		nesting_budget: &dyn Budget,
 	) -> DispatchResultWithPostInfo;
 	fn approve(
 		&self,
@@ -781,11 +785,12 @@
 		data: BoundedVec<u8, CustomDataLimit>,
 	) -> DispatchResultWithPostInfo;
 
-	fn nest_token(
+	fn check_nesting(
 		&self,
 		sender: T::CrossAccountId,
-		from: (CollectionId, TokenId),
+		from: CollectionId,
 		under: TokenId,
+		budget: &dyn Budget,
 	) -> DispatchResult;
 
 	fn account_tokens(&self, account: T::CrossAccountId) -> Vec<TokenId>;
modifiedpallets/evm-coder-substrate/src/lib.rsdiffbeforeafterboth
--- a/pallets/evm-coder-substrate/src/lib.rs
+++ b/pallets/evm-coder-substrate/src/lib.rs
@@ -55,7 +55,6 @@
 
 	use frame_system::ensure_signed;
 	pub use frame_support::dispatch::DispatchResult;
-	use frame_support::{pallet_prelude::*, traits::PalletInfo};
 	use frame_system::pallet_prelude::*;
 
 	/// DispatchError is opaque, but we need to somehow extract correct error in case of OutOfGas failure
modifiedpallets/fungible/src/common.rsdiffbeforeafterboth
--- a/pallets/fungible/src/common.rs
+++ b/pallets/fungible/src/common.rs
@@ -17,7 +17,7 @@
 use core::marker::PhantomData;
 
 use frame_support::{dispatch::DispatchResultWithPostInfo, ensure, fail, weights::Weight, BoundedVec};
-use up_data_structs::{TokenId, CreateItemExData, budget::Budget};
+use up_data_structs::{TokenId, CollectionId, CreateItemExData, budget::Budget};
 use pallet_common::{CommonCollectionOperations, CommonWeightInfo, with_weight};
 use sp_runtime::ArithmeticError;
 use sp_std::{vec::Vec, vec};
@@ -78,10 +78,11 @@
 		sender: T::CrossAccountId,
 		to: T::CrossAccountId,
 		data: up_data_structs::CreateItemData,
+		nesting_budget: &dyn Budget,
 	) -> DispatchResultWithPostInfo {
 		match data {
 			up_data_structs::CreateItemData::Fungible(data) => with_weight(
-				<Pallet<T>>::create_item(self, &sender, (to, data.value)),
+				<Pallet<T>>::create_item(self, &sender, (to, data.value), nesting_budget),
 				<CommonWeights<T>>::create_item(),
 			),
 			_ => fail!(<Error<T>>::NotFungibleDataUsedToMintFungibleCollectionToken),
@@ -93,6 +94,7 @@
 		sender: T::CrossAccountId,
 		to: T::CrossAccountId,
 		data: Vec<up_data_structs::CreateItemData>,
+		nesting_budget: &dyn Budget,
 	) -> DispatchResultWithPostInfo {
 		let mut sum: u128 = 0;
 		for data in data {
@@ -107,7 +109,7 @@
 		}
 
 		with_weight(
-			<Pallet<T>>::create_item(self, &sender, (to, sum)),
+			<Pallet<T>>::create_item(self, &sender, (to, sum), nesting_budget),
 			<CommonWeights<T>>::create_item(),
 		)
 	}
@@ -116,6 +118,7 @@
 		&self,
 		sender: <T>::CrossAccountId,
 		data: up_data_structs::CreateItemExData<<T>::CrossAccountId>,
+		nesting_budget: &dyn Budget,
 	) -> DispatchResultWithPostInfo {
 		let weight = <CommonWeights<T>>::create_multiple_items_ex(&data);
 		let data = match data {
@@ -124,7 +127,7 @@
 		};
 
 		with_weight(
-			<Pallet<T>>::create_multiple_items(self, &sender, data.into_inner()),
+			<Pallet<T>>::create_multiple_items(self, &sender, data.into_inner(), nesting_budget),
 			weight,
 		)
 	}
@@ -152,6 +155,7 @@
 		to: T::CrossAccountId,
 		token: TokenId,
 		amount: u128,
+		nesting_budget: &dyn Budget,
 	) -> DispatchResultWithPostInfo {
 		ensure!(
 			token == TokenId::default(),
@@ -159,7 +163,7 @@
 		);
 
 		with_weight(
-			<Pallet<T>>::transfer(self, &from, &to, amount),
+			<Pallet<T>>::transfer(self, &from, &to, amount, nesting_budget),
 			<CommonWeights<T>>::transfer(),
 		)
 	}
@@ -230,11 +234,12 @@
 		fail!(<Error<T>>::FungibleItemsDontHaveData)
 	}
 
-	fn nest_token(
+	fn check_nesting(
 		&self,
 		_sender: <T>::CrossAccountId,
-		_from: (up_data_structs::CollectionId, TokenId),
+		_from: CollectionId,
 		_under: TokenId,
+		_budget: &dyn Budget,
 	) -> sp_runtime::DispatchResult {
 		fail!(<Error<T>>::FungibleDisallowsNesting)
 	}
modifiedpallets/fungible/src/erc.rsdiffbeforeafterboth
--- a/pallets/fungible/src/erc.rs
+++ b/pallets/fungible/src/erc.rs
@@ -81,8 +81,11 @@
 		let caller = T::CrossAccountId::from_eth(caller);
 		let to = T::CrossAccountId::from_eth(to);
 		let amount = amount.try_into().map_err(|_| "amount overflow")?;
+		let budget = self
+			.recorder
+			.weight_calls_budget(<StructureWeight<T>>::find_parent());
 
-		<Pallet<T>>::transfer(self, &caller, &to, amount).map_err(|_| "transfer error")?;
+		<Pallet<T>>::transfer(self, &caller, &to, amount, &budget).map_err(|_| "transfer error")?;
 		Ok(true)
 	}
 	#[weight(<SelfWeightOf<T>>::transfer_from())]
modifiedpallets/fungible/src/lib.rsdiffbeforeafterboth
before · pallets/fungible/src/lib.rs
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;20use frame_support::{ensure};21use pallet_evm::account::CrossAccountId;22use up_data_structs::{23	AccessMode, CollectionId, TokenId, CreateCollectionData, mapping::TokenAddressMapping,24	budget::Budget,25};26use pallet_common::{27	Error as CommonError, Event as CommonEvent, Pallet as PalletCommon,28	CollectionHandle, dispatch::CollectionDispatch,29};30use pallet_structure::Pallet as PalletStructure;31use pallet_evm_coder_substrate::WithRecorder;32use sp_core::H160;33use sp_runtime::{ArithmeticError, DispatchError, DispatchResult};34use sp_std::collections::btree_map::BTreeMap;3536pub use pallet::*;3738use crate::erc::ERC20Events;39#[cfg(feature = "runtime-benchmarks")]40pub mod benchmarking;41pub mod common;42pub mod erc;43pub mod weights;4445pub type CreateItemData<T> = (<T as pallet_evm::account::Config>::CrossAccountId, u128);46pub(crate) type SelfWeightOf<T> = <T as Config>::WeightInfo;4748#[frame_support::pallet]49pub mod pallet {50	use frame_support::{Blake2_128, Blake2_128Concat, Twox64Concat, pallet_prelude::*, storage::Key};51	use up_data_structs::CollectionId;52	use super::weights::WeightInfo;5354	#[pallet::error]55	pub enum Error<T> {56		/// Not Fungible item data used to mint in Fungible collection.57		NotFungibleDataUsedToMintFungibleCollectionToken,58		/// Not default id passed as TokenId argument59		FungibleItemsHaveNoId,60		/// Tried to set data for fungible item61		FungibleItemsDontHaveData,62		/// Fungible token does not support nested63		FungibleDisallowsNesting,64	}6566	#[pallet::config]67	pub trait Config:68		frame_system::Config + pallet_common::Config + pallet_structure::Config69	{70		type WeightInfo: WeightInfo;71	}7273	#[pallet::pallet]74	#[pallet::generate_store(pub(super) trait Store)]75	pub struct Pallet<T>(_);7677	#[pallet::storage]78	pub type TotalSupply<T: Config> =79		StorageMap<Hasher = Twox64Concat, Key = CollectionId, Value = u128, QueryKind = ValueQuery>;8081	#[pallet::storage]82	pub type Balance<T: Config> = StorageNMap<83		Key = (84			Key<Twox64Concat, CollectionId>,85			Key<Blake2_128Concat, T::CrossAccountId>,86		),87		Value = u128,88		QueryKind = ValueQuery,89	>;9091	#[pallet::storage]92	pub type Allowance<T: Config> = StorageNMap<93		Key = (94			Key<Twox64Concat, CollectionId>,95			Key<Blake2_128, T::CrossAccountId>,96			Key<Blake2_128Concat, T::CrossAccountId>,97		),98		Value = u128,99		QueryKind = ValueQuery,100	>;101}102103pub struct FungibleHandle<T: Config>(pallet_common::CollectionHandle<T>);104impl<T: Config> FungibleHandle<T> {105	pub fn cast(inner: pallet_common::CollectionHandle<T>) -> Self {106		Self(inner)107	}108	pub fn into_inner(self) -> pallet_common::CollectionHandle<T> {109		self.0110	}111}112impl<T: Config> WithRecorder<T> for FungibleHandle<T> {113	fn recorder(&self) -> &pallet_evm_coder_substrate::SubstrateRecorder<T> {114		self.0.recorder()115	}116	fn into_recorder(self) -> pallet_evm_coder_substrate::SubstrateRecorder<T> {117		self.0.into_recorder()118	}119}120impl<T: Config> Deref for FungibleHandle<T> {121	type Target = pallet_common::CollectionHandle<T>;122123	fn deref(&self) -> &Self::Target {124		&self.0125	}126}127128impl<T: Config> Pallet<T> {129	pub fn init_collection(130		owner: T::AccountId,131		data: CreateCollectionData<T::AccountId>,132	) -> Result<CollectionId, DispatchError> {133		<PalletCommon<T>>::init_collection(owner, data)134	}135	pub fn destroy_collection(136		collection: FungibleHandle<T>,137		sender: &T::CrossAccountId,138	) -> DispatchResult {139		let id = collection.id;140141		// =========142143		PalletCommon::destroy_collection(collection.0, sender)?;144145		<TotalSupply<T>>::remove(id);146		<Balance<T>>::remove_prefix((id,), None);147		<Allowance<T>>::remove_prefix((id,), None);148		Ok(())149	}150151	pub fn burn(152		collection: &FungibleHandle<T>,153		owner: &T::CrossAccountId,154		amount: u128,155	) -> DispatchResult {156		let total_supply = <TotalSupply<T>>::get(collection.id)157			.checked_sub(amount)158			.ok_or(<CommonError<T>>::TokenValueTooLow)?;159160		let balance = <Balance<T>>::get((collection.id, owner))161			.checked_sub(amount)162			.ok_or(<CommonError<T>>::TokenValueTooLow)?;163164		if collection.access == AccessMode::AllowList {165			collection.check_allowlist(owner)?;166		}167168		// =========169170		if balance == 0 {171			<Balance<T>>::remove((collection.id, owner));172		} else {173			<Balance<T>>::insert((collection.id, owner), balance);174		}175		<TotalSupply<T>>::insert(collection.id, total_supply);176177		collection.log_mirrored(ERC20Events::Transfer {178			from: *owner.as_eth(),179			to: H160::default(),180			value: amount.into(),181		});182		<PalletCommon<T>>::deposit_event(CommonEvent::ItemDestroyed(183			collection.id,184			TokenId::default(),185			owner.clone(),186			amount,187		));188		Ok(())189	}190191	pub fn transfer(192		collection: &FungibleHandle<T>,193		from: &T::CrossAccountId,194		to: &T::CrossAccountId,195		amount: u128,196	) -> DispatchResult {197		ensure!(198			collection.limits.transfers_enabled(),199			<CommonError<T>>::TransferNotAllowed,200		);201202		if collection.access == AccessMode::AllowList {203			collection.check_allowlist(from)?;204			collection.check_allowlist(to)?;205		}206		<PalletCommon<T>>::ensure_correct_receiver(to)?;207208		let balance_from = <Balance<T>>::get((collection.id, from))209			.checked_sub(amount)210			.ok_or(<CommonError<T>>::TokenValueTooLow)?;211		let balance_to = if from != to {212			Some(213				<Balance<T>>::get((collection.id, to))214					.checked_add(amount)215					.ok_or(ArithmeticError::Overflow)?,216			)217		} else {218			None219		};220221		if let Some(target) = T::CrossTokenAddressMapping::address_to_token(to) {222			let handle = <CollectionHandle<T>>::try_get(target.0)?;223			let dispatch = T::CollectionDispatch::dispatch(handle);224			let dispatch = dispatch.as_dyn();225226			// =========227228			dispatch.nest_token(from.clone(), (collection.id, TokenId::default()), target.1)?;229		}230231		if let Some(balance_to) = balance_to {232			// from != to233			if balance_from == 0 {234				<Balance<T>>::remove((collection.id, from));235			} else {236				<Balance<T>>::insert((collection.id, from), balance_from);237			}238			<Balance<T>>::insert((collection.id, to), balance_to);239		}240241		collection.log_mirrored(ERC20Events::Transfer {242			from: *from.as_eth(),243			to: *to.as_eth(),244			value: amount.into(),245		});246		<PalletCommon<T>>::deposit_event(CommonEvent::Transfer(247			collection.id,248			TokenId::default(),249			from.clone(),250			to.clone(),251			amount,252		));253		Ok(())254	}255256	pub fn create_multiple_items(257		collection: &FungibleHandle<T>,258		sender: &T::CrossAccountId,259		data: BTreeMap<T::CrossAccountId, u128>,260	) -> DispatchResult {261		if !collection.is_owner_or_admin(sender) {262			ensure!(263				collection.mint_mode,264				<CommonError<T>>::PublicMintingNotAllowed265			);266			collection.check_allowlist(sender)?;267268			for (owner, _) in data.iter() {269				collection.check_allowlist(owner)?;270			}271		}272273		let total_supply = data274			.iter()275			.map(|(_, v)| *v)276			.try_fold(<TotalSupply<T>>::get(collection.id), |acc, v| {277				acc.checked_add(v)278			})279			.ok_or(ArithmeticError::Overflow)?;280281		let mut balances = data;282		for (k, v) in balances.iter_mut() {283			*v = <Balance<T>>::get((collection.id, &k))284				.checked_add(*v)285				.ok_or(ArithmeticError::Overflow)?;286		}287288		// =========289290		<TotalSupply<T>>::insert(collection.id, total_supply);291		for (user, amount) in balances {292			<Balance<T>>::insert((collection.id, &user), amount);293294			collection.log_mirrored(ERC20Events::Transfer {295				from: H160::default(),296				to: *user.as_eth(),297				value: amount.into(),298			});299			<PalletCommon<T>>::deposit_event(CommonEvent::ItemCreated(300				collection.id,301				TokenId::default(),302				user.clone(),303				amount,304			));305		}306307		Ok(())308	}309310	fn set_allowance_unchecked(311		collection: &FungibleHandle<T>,312		owner: &T::CrossAccountId,313		spender: &T::CrossAccountId,314		amount: u128,315	) {316		if amount == 0 {317			<Allowance<T>>::remove((collection.id, owner, spender));318		} else {319			<Allowance<T>>::insert((collection.id, owner, spender), amount);320		}321322		collection.log_mirrored(ERC20Events::Approval {323			owner: *owner.as_eth(),324			spender: *spender.as_eth(),325			value: amount.into(),326		});327		<PalletCommon<T>>::deposit_event(CommonEvent::Approved(328			collection.id,329			TokenId(0),330			owner.clone(),331			spender.clone(),332			amount,333		));334	}335336	pub fn set_allowance(337		collection: &FungibleHandle<T>,338		owner: &T::CrossAccountId,339		spender: &T::CrossAccountId,340		amount: u128,341	) -> DispatchResult {342		if collection.access == AccessMode::AllowList {343			collection.check_allowlist(owner)?;344			collection.check_allowlist(spender)?;345		}346347		if <Balance<T>>::get((collection.id, owner)) < amount {348			ensure!(349				collection.ignores_owned_amount(owner),350				<CommonError<T>>::CantApproveMoreThanOwned351			);352		}353354		// =========355356		Self::set_allowance_unchecked(collection, owner, spender, amount);357		Ok(())358	}359360	fn check_allowed(361		collection: &FungibleHandle<T>,362		spender: &T::CrossAccountId,363		from: &T::CrossAccountId,364		amount: u128,365		nesting_budget: &dyn Budget,366	) -> Result<Option<u128>, DispatchError> {367		if spender.conv_eq(from) {368			return Ok(None);369		}370		if collection.access == AccessMode::AllowList {371			// `from`, `to` checked in [`transfer`]372			collection.check_allowlist(spender)?;373		}374		if let Some(source) = T::CrossTokenAddressMapping::address_to_token(from) {375			// TODO: should collection owner be allowed to perform this transfer?376			ensure!(377				<PalletStructure<T>>::indirectly_owned(378					spender.clone(),379					source.0,380					source.1,381					nesting_budget382				)?,383				<CommonError<T>>::ApprovedValueTooLow,384			);385			return Ok(None);386		}387		let allowance = <Allowance<T>>::get((collection.id, from, spender)).checked_sub(amount);388		if allowance.is_none() {389			ensure!(390				collection.ignores_allowance(spender),391				<CommonError<T>>::ApprovedValueTooLow392			);393		}394395		Ok(allowance)396	}397398	pub fn transfer_from(399		collection: &FungibleHandle<T>,400		spender: &T::CrossAccountId,401		from: &T::CrossAccountId,402		to: &T::CrossAccountId,403		amount: u128,404		nesting_budget: &dyn Budget,405	) -> DispatchResult {406		let allowance = Self::check_allowed(collection, spender, from, amount, nesting_budget)?;407408		// =========409410		Self::transfer(collection, from, to, amount)?;411		if let Some(allowance) = allowance {412			Self::set_allowance_unchecked(collection, from, spender, allowance);413		}414		Ok(())415	}416417	pub fn burn_from(418		collection: &FungibleHandle<T>,419		spender: &T::CrossAccountId,420		from: &T::CrossAccountId,421		amount: u128,422		nesting_budget: &dyn Budget,423	) -> DispatchResult {424		let allowance = Self::check_allowed(collection, spender, from, amount, nesting_budget)?;425426		// =========427428		Self::burn(collection, from, amount)?;429		if let Some(allowance) = allowance {430			Self::set_allowance_unchecked(collection, from, spender, allowance);431		}432		Ok(())433	}434435	/// Delegated to `create_multiple_items`436	pub fn create_item(437		collection: &FungibleHandle<T>,438		sender: &T::CrossAccountId,439		data: CreateItemData<T>,440	) -> DispatchResult {441		Self::create_multiple_items(collection, sender, [(data.0, data.1)].into_iter().collect())442	}443}
after · pallets/fungible/src/lib.rs
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;20use frame_support::{ensure};21use pallet_evm::account::CrossAccountId;22use up_data_structs::{23	AccessMode, CollectionId, TokenId, CreateCollectionData, mapping::TokenAddressMapping,24	budget::Budget,25};26use pallet_common::{27	Error as CommonError, Event as CommonEvent, Pallet as PalletCommon,28	CollectionHandle, dispatch::CollectionDispatch,29};30use pallet_structure::Pallet as PalletStructure;31use pallet_evm_coder_substrate::WithRecorder;32use sp_core::H160;33use sp_runtime::{ArithmeticError, DispatchError, DispatchResult};34use sp_std::collections::btree_map::BTreeMap;3536pub use pallet::*;3738use crate::erc::ERC20Events;39#[cfg(feature = "runtime-benchmarks")]40pub mod benchmarking;41pub mod common;42pub mod erc;43pub mod weights;4445pub type CreateItemData<T> = (<T as pallet_evm::account::Config>::CrossAccountId, u128);46pub(crate) type SelfWeightOf<T> = <T as Config>::WeightInfo;4748#[frame_support::pallet]49pub mod pallet {50	use frame_support::{Blake2_128, Blake2_128Concat, Twox64Concat, pallet_prelude::*, storage::Key};51	use up_data_structs::CollectionId;52	use super::weights::WeightInfo;5354	#[pallet::error]55	pub enum Error<T> {56		/// Not Fungible item data used to mint in Fungible collection.57		NotFungibleDataUsedToMintFungibleCollectionToken,58		/// Not default id passed as TokenId argument59		FungibleItemsHaveNoId,60		/// Tried to set data for fungible item61		FungibleItemsDontHaveData,62		/// Fungible token does not support nested63		FungibleDisallowsNesting,64	}6566	#[pallet::config]67	pub trait Config:68		frame_system::Config + pallet_common::Config + pallet_structure::Config69	{70		type WeightInfo: WeightInfo;71	}7273	#[pallet::pallet]74	#[pallet::generate_store(pub(super) trait Store)]75	pub struct Pallet<T>(_);7677	#[pallet::storage]78	pub type TotalSupply<T: Config> =79		StorageMap<Hasher = Twox64Concat, Key = CollectionId, Value = u128, QueryKind = ValueQuery>;8081	#[pallet::storage]82	pub type Balance<T: Config> = StorageNMap<83		Key = (84			Key<Twox64Concat, CollectionId>,85			Key<Blake2_128Concat, T::CrossAccountId>,86		),87		Value = u128,88		QueryKind = ValueQuery,89	>;9091	#[pallet::storage]92	pub type Allowance<T: Config> = StorageNMap<93		Key = (94			Key<Twox64Concat, CollectionId>,95			Key<Blake2_128, T::CrossAccountId>,96			Key<Blake2_128Concat, T::CrossAccountId>,97		),98		Value = u128,99		QueryKind = ValueQuery,100	>;101}102103pub struct FungibleHandle<T: Config>(pallet_common::CollectionHandle<T>);104impl<T: Config> FungibleHandle<T> {105	pub fn cast(inner: pallet_common::CollectionHandle<T>) -> Self {106		Self(inner)107	}108	pub fn into_inner(self) -> pallet_common::CollectionHandle<T> {109		self.0110	}111}112impl<T: Config> WithRecorder<T> for FungibleHandle<T> {113	fn recorder(&self) -> &pallet_evm_coder_substrate::SubstrateRecorder<T> {114		self.0.recorder()115	}116	fn into_recorder(self) -> pallet_evm_coder_substrate::SubstrateRecorder<T> {117		self.0.into_recorder()118	}119}120impl<T: Config> Deref for FungibleHandle<T> {121	type Target = pallet_common::CollectionHandle<T>;122123	fn deref(&self) -> &Self::Target {124		&self.0125	}126}127128impl<T: Config> Pallet<T> {129	pub fn init_collection(130		owner: T::AccountId,131		data: CreateCollectionData<T::AccountId>,132	) -> Result<CollectionId, DispatchError> {133		<PalletCommon<T>>::init_collection(owner, data)134	}135	pub fn destroy_collection(136		collection: FungibleHandle<T>,137		sender: &T::CrossAccountId,138	) -> DispatchResult {139		let id = collection.id;140141		// =========142143		PalletCommon::destroy_collection(collection.0, sender)?;144145		<TotalSupply<T>>::remove(id);146		<Balance<T>>::remove_prefix((id,), None);147		<Allowance<T>>::remove_prefix((id,), None);148		Ok(())149	}150151	pub fn burn(152		collection: &FungibleHandle<T>,153		owner: &T::CrossAccountId,154		amount: u128,155	) -> DispatchResult {156		let total_supply = <TotalSupply<T>>::get(collection.id)157			.checked_sub(amount)158			.ok_or(<CommonError<T>>::TokenValueTooLow)?;159160		let balance = <Balance<T>>::get((collection.id, owner))161			.checked_sub(amount)162			.ok_or(<CommonError<T>>::TokenValueTooLow)?;163164		if collection.access == AccessMode::AllowList {165			collection.check_allowlist(owner)?;166		}167168		// =========169170		if balance == 0 {171			<Balance<T>>::remove((collection.id, owner));172		} else {173			<Balance<T>>::insert((collection.id, owner), balance);174		}175		<TotalSupply<T>>::insert(collection.id, total_supply);176177		collection.log_mirrored(ERC20Events::Transfer {178			from: *owner.as_eth(),179			to: H160::default(),180			value: amount.into(),181		});182		<PalletCommon<T>>::deposit_event(CommonEvent::ItemDestroyed(183			collection.id,184			TokenId::default(),185			owner.clone(),186			amount,187		));188		Ok(())189	}190191	pub fn transfer(192		collection: &FungibleHandle<T>,193		from: &T::CrossAccountId,194		to: &T::CrossAccountId,195		amount: u128,196		nesting_budget: &dyn Budget,197	) -> DispatchResult {198		ensure!(199			collection.limits.transfers_enabled(),200			<CommonError<T>>::TransferNotAllowed,201		);202203		if collection.access == AccessMode::AllowList {204			collection.check_allowlist(from)?;205			collection.check_allowlist(to)?;206		}207		<PalletCommon<T>>::ensure_correct_receiver(to)?;208209		let balance_from = <Balance<T>>::get((collection.id, from))210			.checked_sub(amount)211			.ok_or(<CommonError<T>>::TokenValueTooLow)?;212		let balance_to = if from != to {213			Some(214				<Balance<T>>::get((collection.id, to))215					.checked_add(amount)216					.ok_or(ArithmeticError::Overflow)?,217			)218		} else {219			None220		};221222		if let Some(target) = T::CrossTokenAddressMapping::address_to_token(to) {223			let handle = <CollectionHandle<T>>::try_get(target.0)?;224			let dispatch = T::CollectionDispatch::dispatch(handle);225			let dispatch = dispatch.as_dyn();226227			dispatch.check_nesting(from.clone(), collection.id, target.1, nesting_budget)?;228		}229230		// =========231232		if let Some(balance_to) = balance_to {233			// from != to234			if balance_from == 0 {235				<Balance<T>>::remove((collection.id, from));236			} else {237				<Balance<T>>::insert((collection.id, from), balance_from);238			}239			<Balance<T>>::insert((collection.id, to), balance_to);240		}241242		collection.log_mirrored(ERC20Events::Transfer {243			from: *from.as_eth(),244			to: *to.as_eth(),245			value: amount.into(),246		});247		<PalletCommon<T>>::deposit_event(CommonEvent::Transfer(248			collection.id,249			TokenId::default(),250			from.clone(),251			to.clone(),252			amount,253		));254		Ok(())255	}256257	pub fn create_multiple_items(258		collection: &FungibleHandle<T>,259		sender: &T::CrossAccountId,260		data: BTreeMap<T::CrossAccountId, u128>,261		nesting_budget: &dyn Budget,262	) -> DispatchResult {263		if !collection.is_owner_or_admin(sender) {264			ensure!(265				collection.mint_mode,266				<CommonError<T>>::PublicMintingNotAllowed267			);268			collection.check_allowlist(sender)?;269270			for (owner, _) in data.iter() {271				collection.check_allowlist(owner)?;272			}273		}274275		let total_supply = data276			.iter()277			.map(|(_, v)| *v)278			.try_fold(<TotalSupply<T>>::get(collection.id), |acc, v| {279				acc.checked_add(v)280			})281			.ok_or(ArithmeticError::Overflow)?;282283		let mut balances = data;284		for (k, v) in balances.iter_mut() {285			*v = <Balance<T>>::get((collection.id, &k))286				.checked_add(*v)287				.ok_or(ArithmeticError::Overflow)?;288		}289290		for (to, _) in balances.iter() {291			if let Some(target) = T::CrossTokenAddressMapping::address_to_token(to) {292				let handle = <CollectionHandle<T>>::try_get(target.0)?;293				let dispatch = T::CollectionDispatch::dispatch(handle);294				let dispatch = dispatch.as_dyn();295296				dispatch.check_nesting(sender.clone(), collection.id, target.1, nesting_budget)?;297			}298		}299300		// =========301302		<TotalSupply<T>>::insert(collection.id, total_supply);303		for (user, amount) in balances {304			<Balance<T>>::insert((collection.id, &user), amount);305306			collection.log_mirrored(ERC20Events::Transfer {307				from: H160::default(),308				to: *user.as_eth(),309				value: amount.into(),310			});311			<PalletCommon<T>>::deposit_event(CommonEvent::ItemCreated(312				collection.id,313				TokenId::default(),314				user.clone(),315				amount,316			));317		}318319		Ok(())320	}321322	fn set_allowance_unchecked(323		collection: &FungibleHandle<T>,324		owner: &T::CrossAccountId,325		spender: &T::CrossAccountId,326		amount: u128,327	) {328		if amount == 0 {329			<Allowance<T>>::remove((collection.id, owner, spender));330		} else {331			<Allowance<T>>::insert((collection.id, owner, spender), amount);332		}333334		collection.log_mirrored(ERC20Events::Approval {335			owner: *owner.as_eth(),336			spender: *spender.as_eth(),337			value: amount.into(),338		});339		<PalletCommon<T>>::deposit_event(CommonEvent::Approved(340			collection.id,341			TokenId(0),342			owner.clone(),343			spender.clone(),344			amount,345		));346	}347348	pub fn set_allowance(349		collection: &FungibleHandle<T>,350		owner: &T::CrossAccountId,351		spender: &T::CrossAccountId,352		amount: u128,353	) -> DispatchResult {354		if collection.access == AccessMode::AllowList {355			collection.check_allowlist(owner)?;356			collection.check_allowlist(spender)?;357		}358359		if <Balance<T>>::get((collection.id, owner)) < amount {360			ensure!(361				collection.ignores_owned_amount(owner),362				<CommonError<T>>::CantApproveMoreThanOwned363			);364		}365366		// =========367368		Self::set_allowance_unchecked(collection, owner, spender, amount);369		Ok(())370	}371372	fn check_allowed(373		collection: &FungibleHandle<T>,374		spender: &T::CrossAccountId,375		from: &T::CrossAccountId,376		amount: u128,377		nesting_budget: &dyn Budget,378	) -> Result<Option<u128>, DispatchError> {379		if spender.conv_eq(from) {380			return Ok(None);381		}382		if collection.access == AccessMode::AllowList {383			// `from`, `to` checked in [`transfer`]384			collection.check_allowlist(spender)?;385		}386		if let Some(source) = T::CrossTokenAddressMapping::address_to_token(from) {387			// TODO: should collection owner be allowed to perform this transfer?388			ensure!(389				<PalletStructure<T>>::indirectly_owned(390					spender.clone(),391					source.0,392					source.1,393					nesting_budget394				)?,395				<CommonError<T>>::ApprovedValueTooLow,396			);397			return Ok(None);398		}399		let allowance = <Allowance<T>>::get((collection.id, from, spender)).checked_sub(amount);400		if allowance.is_none() {401			ensure!(402				collection.ignores_allowance(spender),403				<CommonError<T>>::ApprovedValueTooLow404			);405		}406407		Ok(allowance)408	}409410	pub fn transfer_from(411		collection: &FungibleHandle<T>,412		spender: &T::CrossAccountId,413		from: &T::CrossAccountId,414		to: &T::CrossAccountId,415		amount: u128,416		nesting_budget: &dyn Budget,417	) -> DispatchResult {418		let allowance = Self::check_allowed(collection, spender, from, amount, nesting_budget)?;419420		// =========421422		Self::transfer(collection, from, to, amount, nesting_budget)?;423		if let Some(allowance) = allowance {424			Self::set_allowance_unchecked(collection, from, spender, allowance);425		}426		Ok(())427	}428429	pub fn burn_from(430		collection: &FungibleHandle<T>,431		spender: &T::CrossAccountId,432		from: &T::CrossAccountId,433		amount: u128,434		nesting_budget: &dyn Budget,435	) -> DispatchResult {436		let allowance = Self::check_allowed(collection, spender, from, amount, nesting_budget)?;437438		// =========439440		Self::burn(collection, from, amount)?;441		if let Some(allowance) = allowance {442			Self::set_allowance_unchecked(collection, from, spender, allowance);443		}444		Ok(())445	}446447	/// Delegated to `create_multiple_items`448	pub fn create_item(449		collection: &FungibleHandle<T>,450		sender: &T::CrossAccountId,451		data: CreateItemData<T>,452		nesting_budget: &dyn Budget,453	) -> DispatchResult {454		Self::create_multiple_items(455			collection,456			sender,457			[(data.0, data.1)].into_iter().collect(),458			nesting_budget,459		)460	}461}
modifiedpallets/nonfungible/src/common.rsdiffbeforeafterboth
--- a/pallets/nonfungible/src/common.rs
+++ b/pallets/nonfungible/src/common.rs
@@ -89,9 +89,15 @@
 		sender: T::CrossAccountId,
 		to: T::CrossAccountId,
 		data: up_data_structs::CreateItemData,
+		nesting_budget: &dyn Budget,
 	) -> DispatchResultWithPostInfo {
 		with_weight(
-			<Pallet<T>>::create_item(self, &sender, map_create_data::<T>(data, &to)?),
+			<Pallet<T>>::create_item(
+				self,
+				&sender,
+				map_create_data::<T>(data, &to)?,
+				nesting_budget,
+			),
 			<CommonWeights<T>>::create_item(),
 		)
 	}
@@ -101,6 +107,7 @@
 		sender: T::CrossAccountId,
 		to: T::CrossAccountId,
 		data: Vec<up_data_structs::CreateItemData>,
+		nesting_budget: &dyn Budget,
 	) -> DispatchResultWithPostInfo {
 		let data = data
 			.into_iter()
@@ -109,7 +116,7 @@
 
 		let amount = data.len();
 		with_weight(
-			<Pallet<T>>::create_multiple_items(self, &sender, data),
+			<Pallet<T>>::create_multiple_items(self, &sender, data, nesting_budget),
 			<CommonWeights<T>>::create_multiple_items(amount as u32),
 		)
 	}
@@ -118,6 +125,7 @@
 		&self,
 		sender: <T>::CrossAccountId,
 		data: up_data_structs::CreateItemExData<<T>::CrossAccountId>,
+		nesting_budget: &dyn Budget,
 	) -> DispatchResultWithPostInfo {
 		let weight = <CommonWeights<T>>::create_multiple_items_ex(&data);
 		let data = match data {
@@ -126,7 +134,7 @@
 		};
 
 		with_weight(
-			<Pallet<T>>::create_multiple_items(self, &sender, data.into_inner()),
+			<Pallet<T>>::create_multiple_items(self, &sender, data.into_inner(), nesting_budget),
 			weight,
 		)
 	}
@@ -154,11 +162,12 @@
 		to: T::CrossAccountId,
 		token: TokenId,
 		amount: u128,
+		nesting_budget: &dyn Budget,
 	) -> DispatchResultWithPostInfo {
 		ensure!(amount <= 1, <Error<T>>::NonfungibleItemsHaveNoAmount);
 		if amount == 1 {
 			with_weight(
-				<Pallet<T>>::transfer(self, &from, &to, token),
+				<Pallet<T>>::transfer(self, &from, &to, token, nesting_budget),
 				<CommonWeights<T>>::transfer(),
 			)
 		} else {
@@ -239,13 +248,14 @@
 		)
 	}
 
-	fn nest_token(
+	fn check_nesting(
 		&self,
 		sender: T::CrossAccountId,
-		(from, _): (CollectionId, TokenId),
+		from: CollectionId,
 		under: TokenId,
+		budget: &dyn Budget,
 	) -> sp_runtime::DispatchResult {
-		<Pallet<T>>::nest_token(self, sender, from, under)
+		<Pallet<T>>::check_nesting(self, sender, from, under, budget)
 	}
 
 	fn account_tokens(&self, account: T::CrossAccountId) -> Vec<TokenId> {
modifiedpallets/nonfungible/src/erc.rsdiffbeforeafterboth
--- a/pallets/nonfungible/src/erc.rs
+++ b/pallets/nonfungible/src/erc.rs
@@ -256,6 +256,10 @@
 		let caller = T::CrossAccountId::from_eth(caller);
 		let to = T::CrossAccountId::from_eth(to);
 		let token_id: u32 = token_id.try_into()?;
+		let budget = self
+			.recorder
+			.weight_calls_budget(<StructureWeight<T>>::find_parent());
+
 		if <TokensMinted<T>>::get(self.id)
 			.checked_add(1)
 			.ok_or("item id overflow")?
@@ -272,6 +276,7 @@
 				variable_data: BoundedVec::default(),
 				owner: to,
 			},
+			&budget,
 		)
 		.map_err(dispatch_to_evm::<T>)?;
 
@@ -296,6 +301,10 @@
 		let caller = T::CrossAccountId::from_eth(caller);
 		let to = T::CrossAccountId::from_eth(to);
 		let token_id: u32 = token_id.try_into().map_err(|_| "amount overflow")?;
+		let budget = self
+			.recorder
+			.weight_calls_budget(<StructureWeight<T>>::find_parent());
+
 		if <TokensMinted<T>>::get(self.id)
 			.checked_add(1)
 			.ok_or("item id overflow")?
@@ -314,6 +323,7 @@
 				variable_data: BoundedVec::default(),
 				owner: to,
 			},
+			&budget,
 		)
 		.map_err(dispatch_to_evm::<T>)?;
 		Ok(true)
@@ -338,8 +348,11 @@
 		let caller = T::CrossAccountId::from_eth(caller);
 		let to = T::CrossAccountId::from_eth(to);
 		let token = token_id.try_into()?;
+		let budget = self
+			.recorder
+			.weight_calls_budget(<StructureWeight<T>>::find_parent());
 
-		<Pallet<T>>::transfer(self, &caller, &to, token).map_err(dispatch_to_evm::<T>)?;
+		<Pallet<T>>::transfer(self, &caller, &to, token, &budget).map_err(dispatch_to_evm::<T>)?;
 		Ok(())
 	}
 
@@ -409,6 +422,9 @@
 		let mut expected_index = <TokensMinted<T>>::get(self.id)
 			.checked_add(1)
 			.ok_or("item id overflow")?;
+		let budget = self
+			.recorder
+			.weight_calls_budget(<StructureWeight<T>>::find_parent());
 
 		let total_tokens = token_ids.len();
 		for id in token_ids.into_iter() {
@@ -426,7 +442,8 @@
 			})
 			.collect();
 
-		<Pallet<T>>::create_multiple_items(self, &caller, data).map_err(dispatch_to_evm::<T>)?;
+		<Pallet<T>>::create_multiple_items(self, &caller, data, &budget)
+			.map_err(dispatch_to_evm::<T>)?;
 		Ok(true)
 	}
 
@@ -447,6 +464,9 @@
 		let mut expected_index = <TokensMinted<T>>::get(self.id)
 			.checked_add(1)
 			.ok_or("item id overflow")?;
+		let budget = self
+			.recorder
+			.weight_calls_budget(<StructureWeight<T>>::find_parent());
 
 		let mut data = Vec::with_capacity(tokens.len());
 		for (id, token_uri) in tokens {
@@ -465,7 +485,8 @@
 			});
 		}
 
-		<Pallet<T>>::create_multiple_items(self, &caller, data).map_err(dispatch_to_evm::<T>)?;
+		<Pallet<T>>::create_multiple_items(self, &caller, data, &budget)
+			.map_err(dispatch_to_evm::<T>)?;
 		Ok(true)
 	}
 }
modifiedpallets/nonfungible/src/lib.rsdiffbeforeafterboth
--- a/pallets/nonfungible/src/lib.rs
+++ b/pallets/nonfungible/src/lib.rs
@@ -251,6 +251,7 @@
 		from: &T::CrossAccountId,
 		to: &T::CrossAccountId,
 		token: TokenId,
+		nesting_budget: &dyn Budget,
 	) -> DispatchResult {
 		ensure!(
 			collection.limits.transfers_enabled(),
@@ -294,12 +295,12 @@
 			let handle = <CollectionHandle<T>>::try_get(target.0)?;
 			let dispatch = T::CollectionDispatch::dispatch(handle);
 			let dispatch = dispatch.as_dyn();
-
-			// =========
 
-			dispatch.nest_token(from.clone(), (collection.id, token), target.1)?;
+			dispatch.check_nesting(from.clone(), collection.id, target.1, nesting_budget)?;
 		}
 
+		// =========
+
 		<TokenData<T>>::insert(
 			(collection.id, token),
 			ItemData {
@@ -340,6 +341,7 @@
 		collection: &NonfungibleHandle<T>,
 		sender: &T::CrossAccountId,
 		data: Vec<CreateItemData<T>>,
+		nesting_budget: &dyn Budget,
 	) -> DispatchResult {
 		if !collection.is_owner_or_admin(sender) {
 			ensure!(
@@ -379,6 +381,16 @@
 			);
 		}
 
+		for (to, _) in balances.iter() {
+			if let Some(target) = T::CrossTokenAddressMapping::address_to_token(to) {
+				let handle = <CollectionHandle<T>>::try_get(target.0)?;
+				let dispatch = T::CollectionDispatch::dispatch(handle);
+				let dispatch = dispatch.as_dyn();
+
+				dispatch.check_nesting(sender.clone(), collection.id, target.1, nesting_budget)?;
+			}
+		}
+
 		// =========
 
 		<TokensMinted<T>>::insert(collection.id, tokens_minted);
@@ -556,7 +568,7 @@
 		// =========
 
 		// Allowance is reset in [`transfer`]
-		Self::transfer(collection, from, to, token)
+		Self::transfer(collection, from, to, token, nesting_budget)
 	}
 
 	pub fn burn_from(
@@ -595,35 +607,34 @@
 		Ok(())
 	}
 
-	pub fn nest_token(
+	pub fn check_nesting(
 		handle: &NonfungibleHandle<T>,
 		sender: T::CrossAccountId,
 		from: CollectionId,
 		under: TokenId,
+		nesting_budget: &dyn Budget,
 	) -> DispatchResult {
 		fn ensure_sender_allowed<T: Config>(
 			collection: CollectionId,
 			token: TokenId,
 			sender: T::CrossAccountId,
+			budget: &dyn Budget,
 		) -> DispatchResult {
 			ensure!(
-				<TokenData<T>>::get((collection, token))
-					.ok_or(<CommonError<T>>::TokenNotFound)?
-					.owner
-					.conv_eq(&sender),
+				<PalletStructure<T>>::indirectly_owned(sender, collection, token, budget)?,
 				<CommonError<T>>::OnlyOwnerAllowedToNest,
 			);
 			Ok(())
 		}
 		match handle.limits.nesting_rule() {
 			NestingRule::Disabled => fail!(<CommonError<T>>::NestingIsDisabled),
-			NestingRule::Owner => ensure_sender_allowed::<T>(from, under, sender)?,
+			NestingRule::Owner => ensure_sender_allowed::<T>(from, under, sender, nesting_budget)?,
 			NestingRule::OwnerRestricted(whitelist) => {
 				ensure!(
 					whitelist.contains(&from),
 					<CommonError<T>>::SourceCollectionIsNotAllowedToNest
 				);
-				ensure_sender_allowed::<T>(from, under, sender)?
+				ensure_sender_allowed::<T>(from, under, sender, nesting_budget)?
 			}
 		}
 		Ok(())
@@ -634,7 +645,8 @@
 		collection: &NonfungibleHandle<T>,
 		sender: &T::CrossAccountId,
 		data: CreateItemData<T>,
+		nesting_budget: &dyn Budget,
 	) -> DispatchResult {
-		Self::create_multiple_items(collection, sender, vec![data])
+		Self::create_multiple_items(collection, sender, vec![data], nesting_budget)
 	}
 }
modifiedpallets/refungible/src/common.rsdiffbeforeafterboth
--- a/pallets/refungible/src/common.rs
+++ b/pallets/refungible/src/common.rs
@@ -19,7 +19,8 @@
 use sp_std::collections::btree_map::BTreeMap;
 use frame_support::{dispatch::DispatchResultWithPostInfo, fail, weights::Weight, BoundedVec};
 use up_data_structs::{
-	TokenId, CustomDataLimit, CreateItemExData, CreateRefungibleExData, budget::Budget,
+	CollectionId, TokenId, CustomDataLimit, CreateItemExData, CreateRefungibleExData,
+	budget::Budget,
 };
 use pallet_common::{CommonCollectionOperations, CommonWeightInfo, with_weight};
 use sp_runtime::DispatchError;
@@ -120,9 +121,15 @@
 		sender: T::CrossAccountId,
 		to: T::CrossAccountId,
 		data: up_data_structs::CreateItemData,
+		nesting_budget: &dyn Budget,
 	) -> DispatchResultWithPostInfo {
 		with_weight(
-			<Pallet<T>>::create_item(self, &sender, map_create_data::<T>(data, &to)?),
+			<Pallet<T>>::create_item(
+				self,
+				&sender,
+				map_create_data::<T>(data, &to)?,
+				nesting_budget,
+			),
 			<CommonWeights<T>>::create_item(),
 		)
 	}
@@ -132,6 +139,7 @@
 		sender: T::CrossAccountId,
 		to: T::CrossAccountId,
 		data: Vec<up_data_structs::CreateItemData>,
+		nesting_budget: &dyn Budget,
 	) -> DispatchResultWithPostInfo {
 		let data = data
 			.into_iter()
@@ -140,7 +148,7 @@
 
 		let amount = data.len();
 		with_weight(
-			<Pallet<T>>::create_multiple_items(self, &sender, data),
+			<Pallet<T>>::create_multiple_items(self, &sender, data, nesting_budget),
 			<CommonWeights<T>>::create_multiple_items(amount as u32),
 		)
 	}
@@ -149,6 +157,7 @@
 		&self,
 		sender: <T>::CrossAccountId,
 		data: CreateItemExData<T::CrossAccountId>,
+		nesting_budget: &dyn Budget,
 	) -> DispatchResultWithPostInfo {
 		let weight = <CommonWeights<T>>::create_multiple_items_ex(&data);
 		let data = match data {
@@ -162,7 +171,7 @@
 		};
 
 		with_weight(
-			<Pallet<T>>::create_multiple_items(self, &sender, data),
+			<Pallet<T>>::create_multiple_items(self, &sender, data, nesting_budget),
 			weight,
 		)
 	}
@@ -185,9 +194,10 @@
 		to: T::CrossAccountId,
 		token: TokenId,
 		amount: u128,
+		nesting_budget: &dyn Budget,
 	) -> DispatchResultWithPostInfo {
 		with_weight(
-			<Pallet<T>>::transfer(self, &from, &to, token, amount),
+			<Pallet<T>>::transfer(self, &from, &to, token, amount, nesting_budget),
 			<CommonWeights<T>>::transfer(),
 		)
 	}
@@ -247,11 +257,12 @@
 		)
 	}
 
-	fn nest_token(
+	fn check_nesting(
 		&self,
 		_sender: <T>::CrossAccountId,
-		_from: (up_data_structs::CollectionId, TokenId),
+		_from: CollectionId,
 		_under: TokenId,
+		_budget: &dyn Budget,
 	) -> sp_runtime::DispatchResult {
 		fail!(<Error<T>>::RefungibleDisallowsNesting)
 	}
modifiedpallets/refungible/src/lib.rsdiffbeforeafterboth
--- a/pallets/refungible/src/lib.rs
+++ b/pallets/refungible/src/lib.rs
@@ -289,6 +289,7 @@
 		to: &T::CrossAccountId,
 		token: TokenId,
 		amount: u128,
+		nesting_budget: &dyn Budget,
 	) -> DispatchResult {
 		ensure!(
 			collection.limits.transfers_enabled(),
@@ -351,10 +352,10 @@
 			let dispatch = T::CollectionDispatch::dispatch(handle);
 			let dispatch = dispatch.as_dyn();
 
-			// =========
+			dispatch.check_nesting(from.clone(), collection.id, target.1, nesting_budget)?;
+		}
 
-			dispatch.nest_token(from.clone(), (collection.id, token), target.1)?;
-		}
+		// =========
 
 		if let Some(balance_to) = balance_to {
 			// from != to
@@ -389,6 +390,7 @@
 		collection: &RefungibleHandle<T>,
 		sender: &T::CrossAccountId,
 		data: Vec<CreateRefungibleExData<T::CrossAccountId>>,
+		nesting_budget: &dyn Budget,
 	) -> DispatchResult {
 		if !collection.is_owner_or_admin(sender) {
 			ensure!(
@@ -453,6 +455,23 @@
 			}
 		}
 
+		for token in data.iter() {
+			for (to, _) in token.users.iter() {
+				if let Some(target) = T::CrossTokenAddressMapping::address_to_token(to) {
+					let handle = <CollectionHandle<T>>::try_get(target.0)?;
+					let dispatch = T::CollectionDispatch::dispatch(handle);
+					let dispatch = dispatch.as_dyn();
+
+					dispatch.check_nesting(
+						sender.clone(),
+						collection.id,
+						target.1,
+						nesting_budget,
+					)?;
+				}
+			}
+		}
+
 		// =========
 
 		<TokensMinted<T>>::insert(collection.id, tokens_minted);
@@ -591,7 +610,7 @@
 
 		// =========
 
-		Self::transfer(collection, from, to, token, amount)?;
+		Self::transfer(collection, from, to, token, amount, nesting_budget)?;
 		if let Some(allowance) = allowance {
 			Self::set_allowance_unchecked(collection, from, spender, token, allowance);
 		}
@@ -648,7 +667,8 @@
 		collection: &RefungibleHandle<T>,
 		sender: &T::CrossAccountId,
 		data: CreateRefungibleExData<T::CrossAccountId>,
+		nesting_budget: &dyn Budget,
 	) -> DispatchResult {
-		Self::create_multiple_items(collection, sender, vec![data])
+		Self::create_multiple_items(collection, sender, vec![data], nesting_budget)
 	}
 }
modifiedpallets/structure/src/lib.rsdiffbeforeafterboth
--- a/pallets/structure/src/lib.rs
+++ b/pallets/structure/src/lib.rs
@@ -19,7 +19,6 @@
 	use frame_support::Parameter;
 	use frame_support::dispatch::{GetDispatchInfo, UnfilteredDispatchable};
 	use frame_support::pallet_prelude::*;
-	use frame_system::pallet_prelude::*;
 
 	use super::*;
 
modifiedpallets/unique/src/lib.rsdiffbeforeafterboth
--- a/pallets/unique/src/lib.rs
+++ b/pallets/unique/src/lib.rs
@@ -693,8 +693,9 @@
 		#[transactional]
 		pub fn create_item(origin, collection_id: CollectionId, owner: T::CrossAccountId, data: CreateItemData) -> DispatchResultWithPostInfo {
 			let sender = T::CrossAccountId::from_sub(ensure_signed(origin)?);
+			let budget = budget::Value::new(2);
 
-			dispatch_call::<T, _>(collection_id, |d| d.create_item(sender, owner, data))
+			dispatch_call::<T, _>(collection_id, |d| d.create_item(sender, owner, data, &budget))
 		}
 
 		/// This method creates multiple items in a collection created with CreateCollection method.
@@ -720,16 +721,18 @@
 		pub fn create_multiple_items(origin, collection_id: CollectionId, owner: T::CrossAccountId, items_data: Vec<CreateItemData>) -> DispatchResultWithPostInfo {
 			ensure!(!items_data.is_empty(), Error::<T>::EmptyArgument);
 			let sender = T::CrossAccountId::from_sub(ensure_signed(origin)?);
+			let budget = budget::Value::new(2);
 
-			dispatch_call::<T, _>(collection_id, |d| d.create_multiple_items(sender, owner, items_data))
+			dispatch_call::<T, _>(collection_id, |d| d.create_multiple_items(sender, owner, items_data, &budget))
 		}
 
 		#[weight = <CommonWeights<T>>::create_multiple_items_ex(&data)]
 		#[transactional]
 		pub fn create_multiple_items_ex(origin, collection_id: CollectionId, data: CreateItemExData<T::CrossAccountId>) -> DispatchResultWithPostInfo {
 			let sender = T::CrossAccountId::from_sub(ensure_signed(origin)?);
+			let budget = budget::Value::new(2);
 
-			dispatch_call::<T, _>(collection_id, |d| d.create_multiple_items_ex(sender, data))
+			dispatch_call::<T, _>(collection_id, |d| d.create_multiple_items_ex(sender, data, &budget))
 		}
 
 		// TODO! transaction weight
@@ -839,8 +842,9 @@
 		#[transactional]
 		pub fn transfer(origin, recipient: T::CrossAccountId, collection_id: CollectionId, item_id: TokenId, value: u128) -> DispatchResultWithPostInfo {
 			let sender = T::CrossAccountId::from_sub(ensure_signed(origin)?);
+			let budget = budget::Value::new(2);
 
-			dispatch_call::<T, _>(collection_id, |d| d.transfer(sender, recipient, item_id, value))
+			dispatch_call::<T, _>(collection_id, |d| d.transfer(sender, recipient, item_id, value, &budget))
 		}
 
 		/// Set, change, or remove approved address to transfer the ownership of the NFT.