git.delta.rocks / unique-network / refs/commits / 214592d86cdb

difftreelog

misc: change uint256 to U256

Trubnikov Sergey2023-01-17parent: #7aa4c58.patch.diff
in: master

10 files changed

modifiedcrates/evm-coder/src/lib.rsdiffbeforeafterboth
before · crates/evm-coder/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#![doc = include_str!("../README.md")]18#![deny(missing_docs)]19#![macro_use]20#![cfg_attr(not(feature = "std"), no_std)]21#[cfg(not(feature = "std"))]22extern crate alloc;2324use abi::{AbiRead, AbiReader, AbiWriter};25pub use evm_coder_procedural::{event_topic, fn_selector};26pub mod abi;27pub use events::{ToLog, ToTopic};28use execution::DispatchInfo;29pub mod execution;30#[macro_use]31pub mod custom_signature;3233/// Derives call enum implementing [`crate::Callable`], [`crate::Weighted`]34/// and [`crate::Call`] from impl block.35///36/// ## Macro syntax37///38/// `#[solidity_interface(name, is, inline_is, events)]`39/// - *name* - used in generated code, and for Call enum name40/// - *is* - used to provide inheritance in Solidity41/// - *inline_is* - same as `is`, but ERC165::SupportsInterface will work differently: For `is` SupportsInterface(A) will return true42///   if A is one of the interfaces the contract is inherited from (e.g. B is created as `is(A)`). If B is created as `inline_is(A)`43///   SupportsInterface(A) will internally create a new interface that combines all methods of A and B, so SupportsInterface(A) will return44///   false.45///46/// `#[weight(value)]`47/// Can be added to every method of impl block, used for deriving [`crate::Weighted`], which48/// is used by substrate bridge.49/// - *value*: expression, which evaluates to weight required to call this method.50/// This expression can use call arguments to calculate non-constant execution time.51/// This expression should evaluate faster than actual execution does, and may provide worse case52/// than one is called.53///54/// `#[solidity_interface(rename_selector)]`55/// - *rename_selector* - by default, selector name will be generated by transforming method name56/// from snake_case to camelCase. Use this option, if other naming convention is required.57/// I.e: method `token_uri` will be automatically renamed to `tokenUri` in selector, but name58/// required by ERC721 standard is `tokenURI`, thus we need to specify `rename_selector = "tokenURI"`59/// explicitly.60///61/// Both contract and contract methods may have doccomments, which will end up in a generated62/// solidity interface file, thus you should use [solidity syntax](https://docs.soliditylang.org/en/latest/natspec-format.html) for writing documentation in this macro63///64/// ## Example65///66/// ```ignore67/// struct SuperContract;68/// struct InlineContract;69/// struct Contract;70///71/// #[derive(ToLog)]72/// enum ContractEvents {73///     Event(#[indexed] uint32),74/// }75///76/// /// @dev This contract provides function to multiply two numbers77/// #[solidity_interface(name = MyContract, is(SuperContract), inline_is(InlineContract))]78/// impl Contract {79///     /// Multiply two numbers80///     /// @param a First number81///     /// @param b Second number82///     /// @return uint32 Product of two passed numbers83///     /// @dev This function returns error in case of overflow84///     #[weight(200 + a + b)]85///     #[solidity_interface(rename_selector = "mul")]86///     fn mul(&mut self, a: uint32, b: uint32) -> Result<uint32> {87///         Ok(a.checked_mul(b).ok_or("overflow")?)88///     }89/// }90/// ```91pub use evm_coder_procedural::solidity_interface;92/// See [`solidity_interface`]93pub use evm_coder_procedural::solidity;94/// See [`solidity_interface`]95pub use evm_coder_procedural::weight;96pub use evm_coder_procedural::AbiCoder;97pub use sha3_const;9899/// Derives [`ToLog`] for enum100///101/// Selectors will be derived from variant names, there is currently no way to have custom naming102/// for them103///104/// `#[indexed]`105/// Marks this field as indexed, so it will appear in [`ethereum::Log`] topics instead of data106pub use evm_coder_procedural::ToLog;107108// Api of those modules shouldn't be consumed directly, it is only exported for usage in proc macros109#[doc(hidden)]110pub mod events;111#[doc(hidden)]112#[cfg(feature = "stubgen")]113pub mod solidity;114115/// Sealed traits.116pub mod sealed {117	/// Not every type should be directly placed in vec.118	/// Vec encoding is not memory efficient, as every item will be padded119	/// to 32 bytes.120	/// Instead you should use specialized types (`bytes` in case of `Vec<u8>`)121	pub trait CanBePlacedInVec {}122}123124/// Solidity type definitions (aliases from solidity name to rust type)125/// To be used in [`solidity_interface`] definitions, to make sure there is no126/// type conflict between Rust code and generated definitions127pub mod types {128	#![allow(non_camel_case_types, missing_docs)]129130	#[cfg(not(feature = "std"))]131	use alloc::{vec::Vec};132	use primitive_types::{U256, H160, H256};133134	pub type address = H160;135	pub type uint256 = U256;136	pub type bytes4 = [u8; 4];137	pub type topic = H256;138139	#[cfg(not(feature = "std"))]140	pub type string = ::alloc::string::String;141	#[cfg(feature = "std")]142	pub type string = ::std::string::String;143144	#[derive(Default, Debug, PartialEq, Eq, Clone)]145	pub struct bytes(pub Vec<u8>);146147	//#region Special types148	/// Makes function payable149	pub type value = U256;150	/// Makes function caller-sensitive151	pub type caller = address;152	//#endregion153154	/// Ethereum typed call message, similar to solidity155	/// `msg` object.156	pub struct Msg<C> {157		pub call: C,158		/// Address of user, which called this contract.159		pub caller: H160,160		/// Payment amount to contract.161		/// Contract should reject payment, if target call is not payable,162		/// and there is no `receiver()` function defined.163		pub value: U256,164	}165166	impl From<Vec<u8>> for bytes {167		fn from(src: Vec<u8>) -> Self {168			Self(src)169		}170	}171172	#[allow(clippy::from_over_into)]173	impl Into<Vec<u8>> for bytes {174		fn into(self) -> Vec<u8> {175			self.0176		}177	}178179	impl bytes {180		#[must_use]181		pub fn len(&self) -> usize {182			self.0.len()183		}184185		#[must_use]186		pub fn is_empty(&self) -> bool {187			self.len() == 0188		}189	}190}191192/// Parseable EVM call, this trait should be implemented with [`solidity_interface`] macro193pub trait Call: Sized {194	/// Parse call buffer into typed call enum195	fn parse(selector: types::bytes4, input: &mut AbiReader) -> execution::Result<Option<Self>>;196}197198/// Intended to be used as `#[weight]` output type199/// Should be same between evm-coder and substrate to avoid confusion200///201/// Isn't same thing as gas, some mapping is required between those types202pub type Weight = frame_support::weights::Weight;203204/// In substrate, we have benchmarking, which allows205/// us to not rely on gas metering, but instead predict amount of gas to execute call206pub trait Weighted: Call {207	/// Predict weight of this call208	fn weight(&self) -> DispatchInfo;209}210211/// Type callable with ethereum message, may be implemented by [`solidity_interface`] macro212/// on interface implementation, or for externally-owned real EVM contract213pub trait Callable<C: Call> {214	/// Call contract using specified call data215	fn call(&mut self, call: types::Msg<C>) -> execution::ResultWithPostInfo<AbiWriter>;216}217218/// Implementation of ERC165 is implicitly generated for all interfaces in [`solidity_interface`],219/// this structure holds parsed data for ERC165Call subvariant220///221/// Note: no [`Callable`] implementation is provided, call implementation is inlined into every222/// implementing contract223///224/// See <https://eips.ethereum.org/EIPS/eip-165>225#[derive(Debug)]226pub enum ERC165Call {227	/// ERC165 provides single method, which returns true, if contract228	/// implements specified interface229	SupportsInterface {230		/// Requested interface231		interface_id: types::bytes4,232	},233}234235impl ERC165Call {236	/// ERC165 selector is provided by standard237	pub const INTERFACE_ID: types::bytes4 = u32::to_be_bytes(0x01ffc9a7);238}239240impl Call for ERC165Call {241	fn parse(selector: types::bytes4, input: &mut AbiReader) -> execution::Result<Option<Self>> {242		if selector != Self::INTERFACE_ID {243			return Ok(None);244		}245		Ok(Some(Self::SupportsInterface {246			interface_id: types::bytes4::abi_read(input)?,247		}))248	}249}250251/// Generate "tests", which will generate solidity code on execution and print it to stdout252/// Script at .maintain/scripts/generate_api.sh can split this output from test runtime253///254/// This macro receives type usage as second argument, but you can use anything as generics,255/// because no bounds are implied256#[macro_export]257macro_rules! generate_stubgen {258	($name:ident, $decl:ty, $is_impl:literal) => {259		#[cfg(feature = "stubgen")]260		#[test]261		#[ignore]262		fn $name() {263			use evm_coder::solidity::TypeCollector;264			let mut out = TypeCollector::new();265			<$decl>::generate_solidity_interface(&mut out, $is_impl);266			println!("=== SNIP START ===");267			println!("// SPDX-License-Identifier: OTHER");268			println!("// This code is automatically generated");269			println!();270			println!("pragma solidity >=0.8.0 <0.9.0;");271			println!();272			for b in out.finish() {273				println!("{}", b);274			}275			println!("=== SNIP END ===");276		}277	};278}279280#[cfg(test)]281mod tests {282	use super::*;283284	#[test]285	fn function_selector_generation() {286		assert_eq!(fn_selector!(transfer(address, uint256)), 0xa9059cbb);287	}288289	#[test]290	fn event_topic_generation() {291		assert_eq!(292			hex::encode(&event_topic!(Transfer(address, address, uint256))[..]),293			"ddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef",294		);295	}296}
after · crates/evm-coder/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#![doc = include_str!("../README.md")]18#![deny(missing_docs)]19#![macro_use]20#![cfg_attr(not(feature = "std"), no_std)]21#[cfg(not(feature = "std"))]22extern crate alloc;2324use abi::{AbiRead, AbiReader, AbiWriter};25pub use evm_coder_procedural::{event_topic, fn_selector};26pub mod abi;27pub use events::{ToLog, ToTopic};28use execution::DispatchInfo;29pub mod execution;30#[macro_use]31pub mod custom_signature;3233/// Derives call enum implementing [`crate::Callable`], [`crate::Weighted`]34/// and [`crate::Call`] from impl block.35///36/// ## Macro syntax37///38/// `#[solidity_interface(name, is, inline_is, events)]`39/// - *name* - used in generated code, and for Call enum name40/// - *is* - used to provide inheritance in Solidity41/// - *inline_is* - same as `is`, but ERC165::SupportsInterface will work differently: For `is` SupportsInterface(A) will return true42///   if A is one of the interfaces the contract is inherited from (e.g. B is created as `is(A)`). If B is created as `inline_is(A)`43///   SupportsInterface(A) will internally create a new interface that combines all methods of A and B, so SupportsInterface(A) will return44///   false.45///46/// `#[weight(value)]`47/// Can be added to every method of impl block, used for deriving [`crate::Weighted`], which48/// is used by substrate bridge.49/// - *value*: expression, which evaluates to weight required to call this method.50/// This expression can use call arguments to calculate non-constant execution time.51/// This expression should evaluate faster than actual execution does, and may provide worse case52/// than one is called.53///54/// `#[solidity_interface(rename_selector)]`55/// - *rename_selector* - by default, selector name will be generated by transforming method name56/// from snake_case to camelCase. Use this option, if other naming convention is required.57/// I.e: method `token_uri` will be automatically renamed to `tokenUri` in selector, but name58/// required by ERC721 standard is `tokenURI`, thus we need to specify `rename_selector = "tokenURI"`59/// explicitly.60///61/// Both contract and contract methods may have doccomments, which will end up in a generated62/// solidity interface file, thus you should use [solidity syntax](https://docs.soliditylang.org/en/latest/natspec-format.html) for writing documentation in this macro63///64/// ## Example65///66/// ```ignore67/// struct SuperContract;68/// struct InlineContract;69/// struct Contract;70///71/// #[derive(ToLog)]72/// enum ContractEvents {73///     Event(#[indexed] uint32),74/// }75///76/// /// @dev This contract provides function to multiply two numbers77/// #[solidity_interface(name = MyContract, is(SuperContract), inline_is(InlineContract))]78/// impl Contract {79///     /// Multiply two numbers80///     /// @param a First number81///     /// @param b Second number82///     /// @return uint32 Product of two passed numbers83///     /// @dev This function returns error in case of overflow84///     #[weight(200 + a + b)]85///     #[solidity_interface(rename_selector = "mul")]86///     fn mul(&mut self, a: uint32, b: uint32) -> Result<uint32> {87///         Ok(a.checked_mul(b).ok_or("overflow")?)88///     }89/// }90/// ```91pub use evm_coder_procedural::solidity_interface;92/// See [`solidity_interface`]93pub use evm_coder_procedural::solidity;94/// See [`solidity_interface`]95pub use evm_coder_procedural::weight;96pub use evm_coder_procedural::AbiCoder;97pub use sha3_const;9899/// Derives [`ToLog`] for enum100///101/// Selectors will be derived from variant names, there is currently no way to have custom naming102/// for them103///104/// `#[indexed]`105/// Marks this field as indexed, so it will appear in [`ethereum::Log`] topics instead of data106pub use evm_coder_procedural::ToLog;107108// Api of those modules shouldn't be consumed directly, it is only exported for usage in proc macros109#[doc(hidden)]110pub mod events;111#[doc(hidden)]112#[cfg(feature = "stubgen")]113pub mod solidity;114115/// Sealed traits.116pub mod sealed {117	/// Not every type should be directly placed in vec.118	/// Vec encoding is not memory efficient, as every item will be padded119	/// to 32 bytes.120	/// Instead you should use specialized types (`bytes` in case of `Vec<u8>`)121	pub trait CanBePlacedInVec {}122}123124/// Solidity type definitions (aliases from solidity name to rust type)125/// To be used in [`solidity_interface`] definitions, to make sure there is no126/// type conflict between Rust code and generated definitions127pub mod types {128	#![allow(non_camel_case_types, missing_docs)]129130	#[cfg(not(feature = "std"))]131	use alloc::{vec::Vec};132	use primitive_types::{U256, H160, H256};133134	pub type address = H160;135	pub type bytes4 = [u8; 4];136	pub type topic = H256;137138	#[cfg(not(feature = "std"))]139	pub type string = ::alloc::string::String;140	#[cfg(feature = "std")]141	pub type string = ::std::string::String;142143	#[derive(Default, Debug, PartialEq, Eq, Clone)]144	pub struct bytes(pub Vec<u8>);145146	//#region Special types147	/// Makes function payable148	pub type value = U256;149	/// Makes function caller-sensitive150	pub type caller = address;151	//#endregion152153	/// Ethereum typed call message, similar to solidity154	/// `msg` object.155	pub struct Msg<C> {156		pub call: C,157		/// Address of user, which called this contract.158		pub caller: H160,159		/// Payment amount to contract.160		/// Contract should reject payment, if target call is not payable,161		/// and there is no `receiver()` function defined.162		pub value: U256,163	}164165	impl From<Vec<u8>> for bytes {166		fn from(src: Vec<u8>) -> Self {167			Self(src)168		}169	}170171	#[allow(clippy::from_over_into)]172	impl Into<Vec<u8>> for bytes {173		fn into(self) -> Vec<u8> {174			self.0175		}176	}177178	impl bytes {179		#[must_use]180		pub fn len(&self) -> usize {181			self.0.len()182		}183184		#[must_use]185		pub fn is_empty(&self) -> bool {186			self.len() == 0187		}188	}189}190191/// Parseable EVM call, this trait should be implemented with [`solidity_interface`] macro192pub trait Call: Sized {193	/// Parse call buffer into typed call enum194	fn parse(selector: types::bytes4, input: &mut AbiReader) -> execution::Result<Option<Self>>;195}196197/// Intended to be used as `#[weight]` output type198/// Should be same between evm-coder and substrate to avoid confusion199///200/// Isn't same thing as gas, some mapping is required between those types201pub type Weight = frame_support::weights::Weight;202203/// In substrate, we have benchmarking, which allows204/// us to not rely on gas metering, but instead predict amount of gas to execute call205pub trait Weighted: Call {206	/// Predict weight of this call207	fn weight(&self) -> DispatchInfo;208}209210/// Type callable with ethereum message, may be implemented by [`solidity_interface`] macro211/// on interface implementation, or for externally-owned real EVM contract212pub trait Callable<C: Call> {213	/// Call contract using specified call data214	fn call(&mut self, call: types::Msg<C>) -> execution::ResultWithPostInfo<AbiWriter>;215}216217/// Implementation of ERC165 is implicitly generated for all interfaces in [`solidity_interface`],218/// this structure holds parsed data for ERC165Call subvariant219///220/// Note: no [`Callable`] implementation is provided, call implementation is inlined into every221/// implementing contract222///223/// See <https://eips.ethereum.org/EIPS/eip-165>224#[derive(Debug)]225pub enum ERC165Call {226	/// ERC165 provides single method, which returns true, if contract227	/// implements specified interface228	SupportsInterface {229		/// Requested interface230		interface_id: types::bytes4,231	},232}233234impl ERC165Call {235	/// ERC165 selector is provided by standard236	pub const INTERFACE_ID: types::bytes4 = u32::to_be_bytes(0x01ffc9a7);237}238239impl Call for ERC165Call {240	fn parse(selector: types::bytes4, input: &mut AbiReader) -> execution::Result<Option<Self>> {241		if selector != Self::INTERFACE_ID {242			return Ok(None);243		}244		Ok(Some(Self::SupportsInterface {245			interface_id: types::bytes4::abi_read(input)?,246		}))247	}248}249250/// Generate "tests", which will generate solidity code on execution and print it to stdout251/// Script at .maintain/scripts/generate_api.sh can split this output from test runtime252///253/// This macro receives type usage as second argument, but you can use anything as generics,254/// because no bounds are implied255#[macro_export]256macro_rules! generate_stubgen {257	($name:ident, $decl:ty, $is_impl:literal) => {258		#[cfg(feature = "stubgen")]259		#[test]260		#[ignore]261		fn $name() {262			use evm_coder::solidity::TypeCollector;263			let mut out = TypeCollector::new();264			<$decl>::generate_solidity_interface(&mut out, $is_impl);265			println!("=== SNIP START ===");266			println!("// SPDX-License-Identifier: OTHER");267			println!("// This code is automatically generated");268			println!();269			println!("pragma solidity >=0.8.0 <0.9.0;");270			println!();271			for b in out.finish() {272				println!("{}", b);273			}274			println!("=== SNIP END ===");275		}276	};277}278279#[cfg(test)]280mod tests {281	use super::*;282283	#[test]284	fn function_selector_generation() {285		assert_eq!(fn_selector!(transfer(address, uint256)), 0xa9059cbb);286	}287288	#[test]289	fn event_topic_generation() {290		assert_eq!(291			hex::encode(&event_topic!(Transfer(address, address, uint256))[..]),292			"ddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef",293		);294	}295}
modifiedpallets/common/src/eth.rsdiffbeforeafterboth
--- a/pallets/common/src/eth.rs
+++ b/pallets/common/src/eth.rs
@@ -18,12 +18,9 @@
 
 use alloc::format;
 use sp_std::{vec, vec::Vec};
-use evm_coder::{
-	AbiCoder,
-	types::{uint256, address},
-};
+use evm_coder::{AbiCoder, types::address};
 pub use pallet_evm::{Config, account::CrossAccountId};
-use sp_core::H160;
+use sp_core::{H160, U256};
 use up_data_structs::CollectionId;
 
 // 0x17c4e6453Cc49AAAaEACA894e6D9683e00000001 - collection 1
@@ -55,8 +52,8 @@
 	address[0..16] == ETH_COLLECTION_PREFIX
 }
 
-/// Convert `uint256` to `CrossAccountId`.
-pub fn convert_uint256_to_cross_account<T: Config>(from: uint256) -> T::CrossAccountId
+/// Convert `U256` to `CrossAccountId`.
+pub fn convert_uint256_to_cross_account<T: Config>(from: U256) -> T::CrossAccountId
 where
 	T::AccountId: From<[u8; 32]>,
 {
@@ -70,7 +67,7 @@
 #[derive(Debug, Default, AbiCoder)]
 pub struct CrossAddress {
 	pub(crate) eth: address,
-	pub(crate) sub: uint256,
+	pub(crate) sub: U256,
 }
 
 impl CrossAddress {
@@ -97,7 +94,7 @@
 	{
 		Self {
 			eth: Default::default(),
-			sub: uint256::from_big_endian(account_id.as_ref()),
+			sub: U256::from_big_endian(account_id.as_ref()),
 		}
 	}
 	/// Converts [`CrossAddress`] to `CrossAccountId`.
@@ -187,7 +184,7 @@
 #[derive(Debug, Default, AbiCoder)]
 pub struct CollectionLimit {
 	field: CollectionLimitField,
-	value: Option<uint256>,
+	value: Option<U256>,
 }
 
 impl CollectionLimit {
@@ -393,12 +390,12 @@
 #[derive(Debug, Default, AbiCoder)]
 pub struct CollectionNesting {
 	token_owner: bool,
-	ids: Vec<uint256>,
+	ids: Vec<U256>,
 }
 
 impl CollectionNesting {
 	/// Create [`CollectionNesting`].
-	pub fn new(token_owner: bool, ids: Vec<uint256>) -> Self {
+	pub fn new(token_owner: bool, ids: Vec<U256>) -> Self {
 		Self { token_owner, ids }
 	}
 }
modifiedpallets/evm-contract-helpers/src/eth.rsdiffbeforeafterboth
--- a/pallets/evm-contract-helpers/src/eth.rs
+++ b/pallets/evm-contract-helpers/src/eth.rs
@@ -261,7 +261,7 @@
 		&mut self,
 		caller: caller,
 		contract_address: address,
-		fee_limit: uint256,
+		fee_limit: U256,
 	) -> Result<()> {
 		self.recorder().consume_sload()?;
 		self.recorder().consume_sstore()?;
@@ -276,7 +276,7 @@
 	/// @param contractAddress Contract to get sponsoring fee limit of
 	/// @return uint256 Maximum amount of fee that could be spent by single
 	///  transaction
-	fn sponsoring_fee_limit(&self, contract_address: address) -> Result<uint256> {
+	fn sponsoring_fee_limit(&self, contract_address: address) -> Result<U256> {
 		self.recorder().consume_sload()?;
 
 		Ok(get_sponsoring_fee_limit::<T>(contract_address))
@@ -441,7 +441,7 @@
 	}
 }
 
-fn get_sponsoring_fee_limit<T: Config>(contract_address: address) -> uint256 {
+fn get_sponsoring_fee_limit<T: Config>(contract_address: address) -> U256 {
 	<SponsoringFeeLimit<T>>::get(contract_address)
 		.get(&0xffffffff)
 		.cloned()
modifiedpallets/fungible/src/erc.rsdiffbeforeafterboth
--- a/pallets/fungible/src/erc.rs
+++ b/pallets/fungible/src/erc.rs
@@ -32,7 +32,7 @@
 use pallet_evm::{account::CrossAccountId, PrecompileHandle};
 use pallet_evm_coder_substrate::{call, dispatch_to_evm};
 use pallet_structure::{SelfWeightOf as StructureWeight, weights::WeightInfo as _};
-use sp_core::Get;
+use sp_core::{U256, Get};
 
 use crate::{
 	Allowance, Balance, Config, FungibleHandle, Pallet, SelfWeightOf, TotalSupply,
@@ -46,14 +46,14 @@
 		from: address,
 		#[indexed]
 		to: address,
-		value: uint256,
+		value: U256,
 	},
 	Approval {
 		#[indexed]
 		owner: address,
 		#[indexed]
 		spender: address,
-		value: uint256,
+		value: U256,
 	},
 }
 
@@ -67,7 +67,7 @@
 	fn symbol(&self) -> Result<string> {
 		Ok(string::from_utf8_lossy(&self.token_prefix).into())
 	}
-	fn total_supply(&self) -> Result<uint256> {
+	fn total_supply(&self) -> Result<U256> {
 		self.consume_store_reads(1)?;
 		Ok(<TotalSupply<T>>::get(self.id).into())
 	}
@@ -79,14 +79,14 @@
 			unreachable!()
 		})
 	}
-	fn balance_of(&self, owner: address) -> Result<uint256> {
+	fn balance_of(&self, owner: address) -> Result<U256> {
 		self.consume_store_reads(1)?;
 		let owner = T::CrossAccountId::from_eth(owner);
 		let balance = <Balance<T>>::get((self.id, owner));
 		Ok(balance.into())
 	}
 	#[weight(<SelfWeightOf<T>>::transfer())]
-	fn transfer(&mut self, caller: caller, to: address, amount: uint256) -> Result<bool> {
+	fn transfer(&mut self, caller: caller, to: address, amount: U256) -> Result<bool> {
 		let caller = T::CrossAccountId::from_eth(caller);
 		let to = T::CrossAccountId::from_eth(to);
 		let amount = amount.try_into().map_err(|_| "amount overflow")?;
@@ -104,7 +104,7 @@
 		caller: caller,
 		from: address,
 		to: address,
-		amount: uint256,
+		amount: U256,
 	) -> Result<bool> {
 		let caller = T::CrossAccountId::from_eth(caller);
 		let from = T::CrossAccountId::from_eth(from);
@@ -119,7 +119,7 @@
 		Ok(true)
 	}
 	#[weight(<SelfWeightOf<T>>::approve())]
-	fn approve(&mut self, caller: caller, spender: address, amount: uint256) -> Result<bool> {
+	fn approve(&mut self, caller: caller, spender: address, amount: U256) -> Result<bool> {
 		let caller = T::CrossAccountId::from_eth(caller);
 		let spender = T::CrossAccountId::from_eth(spender);
 		let amount = amount.try_into().map_err(|_| "amount overflow")?;
@@ -128,7 +128,7 @@
 			.map_err(dispatch_to_evm::<T>)?;
 		Ok(true)
 	}
-	fn allowance(&self, owner: address, spender: address) -> Result<uint256> {
+	fn allowance(&self, owner: address, spender: address) -> Result<U256> {
 		self.consume_store_reads(1)?;
 		let owner = T::CrossAccountId::from_eth(owner);
 		let spender = T::CrossAccountId::from_eth(spender);
@@ -148,7 +148,7 @@
 	/// @param to account that will receive minted tokens
 	/// @param amount amount of tokens to mint
 	#[weight(<SelfWeightOf<T>>::create_item())]
-	fn mint(&mut self, caller: caller, to: address, amount: uint256) -> Result<bool> {
+	fn mint(&mut self, caller: caller, to: address, amount: U256) -> Result<bool> {
 		let caller = T::CrossAccountId::from_eth(caller);
 		let to = T::CrossAccountId::from_eth(to);
 		let amount = amount.try_into().map_err(|_| "amount overflow")?;
@@ -178,7 +178,7 @@
 		&mut self,
 		caller: caller,
 		to: pallet_common::eth::CrossAddress,
-		amount: uint256,
+		amount: U256,
 	) -> Result<bool> {
 		let caller = T::CrossAccountId::from_eth(caller);
 		let to = to.into_sub_cross_account::<T>()?;
@@ -196,7 +196,7 @@
 		&mut self,
 		caller: caller,
 		spender: pallet_common::eth::CrossAddress,
-		amount: uint256,
+		amount: U256,
 	) -> Result<bool> {
 		let caller = T::CrossAccountId::from_eth(caller);
 		let spender = spender.into_sub_cross_account::<T>()?;
@@ -214,7 +214,7 @@
 	/// @param amount The amount that will be burnt.
 	#[solidity(hide)]
 	#[weight(<SelfWeightOf<T>>::burn_from())]
-	fn burn_from(&mut self, caller: caller, from: address, amount: uint256) -> Result<bool> {
+	fn burn_from(&mut self, caller: caller, from: address, amount: U256) -> Result<bool> {
 		let caller = T::CrossAccountId::from_eth(caller);
 		let from = T::CrossAccountId::from_eth(from);
 		let amount = amount.try_into().map_err(|_| "amount overflow")?;
@@ -237,7 +237,7 @@
 		&mut self,
 		caller: caller,
 		from: pallet_common::eth::CrossAddress,
-		amount: uint256,
+		amount: U256,
 	) -> Result<bool> {
 		let caller = T::CrossAccountId::from_eth(caller);
 		let from = from.into_sub_cross_account::<T>()?;
@@ -254,7 +254,7 @@
 	/// Mint tokens for multiple accounts.
 	/// @param amounts array of pairs of account address and amount
 	#[weight(<SelfWeightOf<T>>::create_multiple_items_ex(amounts.len() as u32))]
-	fn mint_bulk(&mut self, caller: caller, amounts: Vec<(address, uint256)>) -> Result<bool> {
+	fn mint_bulk(&mut self, caller: caller, amounts: Vec<(address, U256)>) -> Result<bool> {
 		let caller = T::CrossAccountId::from_eth(caller);
 		let budget = self
 			.recorder
@@ -279,7 +279,7 @@
 		&mut self,
 		caller: caller,
 		to: pallet_common::eth::CrossAddress,
-		amount: uint256,
+		amount: U256,
 	) -> Result<bool> {
 		let caller = T::CrossAccountId::from_eth(caller);
 		let to = to.into_sub_cross_account::<T>()?;
@@ -298,7 +298,7 @@
 		caller: caller,
 		from: pallet_common::eth::CrossAddress,
 		to: pallet_common::eth::CrossAddress,
-		amount: uint256,
+		amount: U256,
 	) -> Result<bool> {
 		let caller = T::CrossAccountId::from_eth(caller);
 		let from = from.into_sub_cross_account::<T>()?;
modifiedpallets/nonfungible/src/erc.rsdiffbeforeafterboth
--- a/pallets/nonfungible/src/erc.rs
+++ b/pallets/nonfungible/src/erc.rs
@@ -43,7 +43,7 @@
 use pallet_evm::{account::CrossAccountId, PrecompileHandle};
 use pallet_evm_coder_substrate::call;
 use pallet_structure::{SelfWeightOf as StructureWeight, weights::WeightInfo as _};
-use sp_core::Get;
+use sp_core::{U256, Get};
 
 use crate::{
 	AccountBalance, Config, CreateItemData, NonfungibleHandle, Pallet, TokenData, TokensMinted,
@@ -122,7 +122,7 @@
 	fn set_property(
 		&mut self,
 		caller: caller,
-		token_id: uint256,
+		token_id: U256,
 		key: string,
 		value: bytes,
 	) -> Result<()> {
@@ -155,7 +155,7 @@
 	fn set_properties(
 		&mut self,
 		caller: caller,
-		token_id: uint256,
+		token_id: U256,
 		properties: Vec<eth::Property>,
 	) -> Result<()> {
 		let caller = T::CrossAccountId::from_eth(caller);
@@ -187,7 +187,7 @@
 	/// @param key Property key.
 	#[solidity(hide)]
 	#[weight(<SelfWeightOf<T>>::delete_token_properties(1))]
-	fn delete_property(&mut self, token_id: uint256, caller: caller, key: string) -> Result<()> {
+	fn delete_property(&mut self, token_id: U256, caller: caller, key: string) -> Result<()> {
 		let caller = T::CrossAccountId::from_eth(caller);
 		let token_id: u32 = token_id.try_into().map_err(|_| "token id overflow")?;
 		let key = <Vec<u8>>::from(key)
@@ -209,7 +209,7 @@
 	#[weight(<SelfWeightOf<T>>::delete_token_properties(keys.len() as u32))]
 	fn delete_properties(
 		&mut self,
-		token_id: uint256,
+		token_id: U256,
 		caller: caller,
 		keys: Vec<string>,
 	) -> Result<()> {
@@ -239,7 +239,7 @@
 	/// @param tokenId ID of the token.
 	/// @param key Property key.
 	/// @return Property value bytes
-	fn property(&self, token_id: uint256, key: string) -> Result<bytes> {
+	fn property(&self, token_id: U256, key: string) -> Result<bytes> {
 		let token_id: u32 = token_id.try_into().map_err(|_| "token id overflow")?;
 		let key = <Vec<u8>>::from(key)
 			.try_into()
@@ -265,7 +265,7 @@
 		#[indexed]
 		to: address,
 		#[indexed]
-		token_id: uint256,
+		token_id: U256,
 	},
 	/// @dev This emits when the approved address for an NFT is changed or
 	///  reaffirmed. The zero address indicates there is no approved address.
@@ -277,7 +277,7 @@
 		#[indexed]
 		approved: address,
 		#[indexed]
-		token_id: uint256,
+		token_id: U256,
 	},
 	/// @dev This emits when an operator is enabled or disabled for an owner.
 	///  The operator can manage all NFTs of the owner.
@@ -322,7 +322,7 @@
 	///
 	/// @return token's const_metadata
 	#[solidity(rename_selector = "tokenURI")]
-	fn token_uri(&self, token_id: uint256) -> Result<string> {
+	fn token_uri(&self, token_id: U256) -> Result<string> {
 		let token_id_u32: u32 = token_id.try_into().map_err(|_| "token id overflow")?;
 
 		match get_token_property(self, token_id_u32, &key::url()).as_deref() {
@@ -368,12 +368,12 @@
 	/// @param index A counter less than `totalSupply()`
 	/// @return The token identifier for the `index`th NFT,
 	///  (sort order not specified)
-	fn token_by_index(&self, index: uint256) -> Result<uint256> {
+	fn token_by_index(&self, index: U256) -> Result<U256> {
 		Ok(index)
 	}
 
 	/// @dev Not implemented
-	fn token_of_owner_by_index(&self, _owner: address, _index: uint256) -> Result<uint256> {
+	fn token_of_owner_by_index(&self, _owner: address, _index: U256) -> Result<U256> {
 		// TODO: Not implemetable
 		Err("not implemented".into())
 	}
@@ -381,7 +381,7 @@
 	/// @notice Count NFTs tracked by this contract
 	/// @return A count of valid NFTs tracked by this contract, where each one of
 	///  them has an assigned and queryable owner not equal to the zero address
-	fn total_supply(&self) -> Result<uint256> {
+	fn total_supply(&self) -> Result<U256> {
 		self.consume_store_reads(1)?;
 		Ok(<Pallet<T>>::total_supply(self).into())
 	}
@@ -396,7 +396,7 @@
 	///  function throws for queries about the zero address.
 	/// @param owner An address for whom to query the balance
 	/// @return The number of NFTs owned by `owner`, possibly zero
-	fn balance_of(&self, owner: address) -> Result<uint256> {
+	fn balance_of(&self, owner: address) -> Result<U256> {
 		self.consume_store_reads(1)?;
 		let owner = T::CrossAccountId::from_eth(owner);
 		let balance = <AccountBalance<T>>::get((self.id, owner));
@@ -407,7 +407,7 @@
 	///  about them do throw.
 	/// @param tokenId The identifier for an NFT
 	/// @return The address of the owner of the NFT
-	fn owner_of(&self, token_id: uint256) -> Result<address> {
+	fn owner_of(&self, token_id: U256) -> Result<address> {
 		self.consume_store_reads(1)?;
 		let token: TokenId = token_id.try_into()?;
 		Ok(*<TokenData<T>>::get((self.id, token))
@@ -421,19 +421,14 @@
 		&mut self,
 		_from: address,
 		_to: address,
-		_token_id: uint256,
+		_token_id: U256,
 		_data: bytes,
 	) -> Result<()> {
 		// TODO: Not implemetable
 		Err("not implemented".into())
 	}
 	/// @dev Not implemented
-	fn safe_transfer_from(
-		&mut self,
-		_from: address,
-		_to: address,
-		_token_id: uint256,
-	) -> Result<()> {
+	fn safe_transfer_from(&mut self, _from: address, _to: address, _token_id: U256) -> Result<()> {
 		// TODO: Not implemetable
 		Err("not implemented".into())
 	}
@@ -453,7 +448,7 @@
 		caller: caller,
 		from: address,
 		to: address,
-		token_id: uint256,
+		token_id: U256,
 	) -> Result<()> {
 		let caller = T::CrossAccountId::from_eth(caller);
 		let from = T::CrossAccountId::from_eth(from);
@@ -475,7 +470,7 @@
 	/// @param approved The new approved NFT controller
 	/// @param tokenId The NFT to approve
 	#[weight(<SelfWeightOf<T>>::approve())]
-	fn approve(&mut self, caller: caller, approved: address, token_id: uint256) -> Result<()> {
+	fn approve(&mut self, caller: caller, approved: address, token_id: U256) -> Result<()> {
 		let caller = T::CrossAccountId::from_eth(caller);
 		let approved = T::CrossAccountId::from_eth(approved);
 		let token = token_id.try_into()?;
@@ -505,7 +500,7 @@
 	}
 
 	/// @dev Not implemented
-	fn get_approved(&self, _token_id: uint256) -> Result<address> {
+	fn get_approved(&self, _token_id: U256) -> Result<address> {
 		// TODO: Not implemetable
 		Err("not implemented".into())
 	}
@@ -528,7 +523,7 @@
 	///  operator of the current owner.
 	/// @param tokenId The NFT to approve
 	#[weight(<SelfWeightOf<T>>::burn_item())]
-	fn burn(&mut self, caller: caller, token_id: uint256) -> Result<()> {
+	fn burn(&mut self, caller: caller, token_id: U256) -> Result<()> {
 		let caller = T::CrossAccountId::from_eth(caller);
 		let token = token_id.try_into()?;
 
@@ -544,8 +539,8 @@
 	/// @param to The new owner
 	/// @return uint256 The id of the newly minted token
 	#[weight(<SelfWeightOf<T>>::create_item())]
-	fn mint(&mut self, caller: caller, to: address) -> Result<uint256> {
-		let token_id: uint256 = <TokensMinted<T>>::get(self.id)
+	fn mint(&mut self, caller: caller, to: address) -> Result<U256> {
+		let token_id: U256 = <TokensMinted<T>>::get(self.id)
 			.checked_add(1)
 			.ok_or("item id overflow")?
 			.into();
@@ -560,7 +555,7 @@
 	/// @param tokenId ID of the minted NFT
 	#[solidity(hide, rename_selector = "mint")]
 	#[weight(<SelfWeightOf<T>>::create_item())]
-	fn mint_check_id(&mut self, caller: caller, to: address, token_id: uint256) -> Result<bool> {
+	fn mint_check_id(&mut self, caller: caller, to: address, token_id: U256) -> Result<bool> {
 		let caller = T::CrossAccountId::from_eth(caller);
 		let to = T::CrossAccountId::from_eth(to);
 		let token_id: u32 = token_id.try_into()?;
@@ -601,8 +596,8 @@
 		caller: caller,
 		to: address,
 		token_uri: string,
-	) -> Result<uint256> {
-		let token_id: uint256 = <TokensMinted<T>>::get(self.id)
+	) -> Result<U256> {
+		let token_id: U256 = <TokensMinted<T>>::get(self.id)
 			.checked_add(1)
 			.ok_or("item id overflow")?
 			.into();
@@ -622,7 +617,7 @@
 		&mut self,
 		caller: caller,
 		to: address,
-		token_id: uint256,
+		token_id: U256,
 		token_uri: string,
 	) -> Result<bool> {
 		let key = key::url();
@@ -730,7 +725,7 @@
 	/// Returns the owner (in cross format) of the token.
 	///
 	/// @param tokenId Id for the token.
-	fn cross_owner_of(&self, token_id: uint256) -> Result<eth::CrossAddress> {
+	fn cross_owner_of(&self, token_id: U256) -> Result<eth::CrossAddress> {
 		Self::token_owner(&self, token_id.try_into()?)
 			.map(|o| eth::CrossAddress::from_sub_cross_account::<T>(&o))
 			.ok_or(Error::Revert("key too large".into()))
@@ -741,7 +736,7 @@
 	/// @param tokenId Id for the token.
 	/// @param keys Properties keys. Empty keys for all propertyes.
 	/// @return Vector of properties key/value pairs.
-	fn properties(&self, token_id: uint256, keys: Vec<string>) -> Result<Vec<eth::Property>> {
+	fn properties(&self, token_id: U256, keys: Vec<string>) -> Result<Vec<eth::Property>> {
 		let keys = keys
 			.into_iter()
 			.map(|key| {
@@ -772,7 +767,7 @@
 		&mut self,
 		caller: caller,
 		approved: eth::CrossAddress,
-		token_id: uint256,
+		token_id: U256,
 	) -> Result<()> {
 		let caller = T::CrossAccountId::from_eth(caller);
 		let approved = approved.into_sub_cross_account::<T>()?;
@@ -789,7 +784,7 @@
 	/// @param to The new owner
 	/// @param tokenId The NFT to transfer
 	#[weight(<SelfWeightOf<T>>::transfer())]
-	fn transfer(&mut self, caller: caller, to: address, token_id: uint256) -> Result<()> {
+	fn transfer(&mut self, caller: caller, to: address, token_id: U256) -> Result<()> {
 		let caller = T::CrossAccountId::from_eth(caller);
 		let to = T::CrossAccountId::from_eth(to);
 		let token = token_id.try_into()?;
@@ -811,7 +806,7 @@
 		&mut self,
 		caller: caller,
 		to: eth::CrossAddress,
-		token_id: uint256,
+		token_id: U256,
 	) -> Result<()> {
 		let caller = T::CrossAccountId::from_eth(caller);
 		let to = to.into_sub_cross_account::<T>()?;
@@ -836,7 +831,7 @@
 		caller: caller,
 		from: eth::CrossAddress,
 		to: eth::CrossAddress,
-		token_id: uint256,
+		token_id: U256,
 	) -> Result<()> {
 		let caller = T::CrossAccountId::from_eth(caller);
 		let from = from.into_sub_cross_account::<T>()?;
@@ -858,7 +853,7 @@
 	/// @param tokenId The NFT to transfer
 	#[solidity(hide)]
 	#[weight(<SelfWeightOf<T>>::burn_from())]
-	fn burn_from(&mut self, caller: caller, from: address, token_id: uint256) -> Result<()> {
+	fn burn_from(&mut self, caller: caller, from: address, token_id: U256) -> Result<()> {
 		let caller = T::CrossAccountId::from_eth(caller);
 		let from = T::CrossAccountId::from_eth(from);
 		let token = token_id.try_into()?;
@@ -882,7 +877,7 @@
 		&mut self,
 		caller: caller,
 		from: eth::CrossAddress,
-		token_id: uint256,
+		token_id: U256,
 	) -> Result<()> {
 		let caller = T::CrossAccountId::from_eth(caller);
 		let from = from.into_sub_cross_account::<T>()?;
@@ -897,7 +892,7 @@
 	}
 
 	/// @notice Returns next free NFT ID.
-	fn next_token_id(&self) -> Result<uint256> {
+	fn next_token_id(&self) -> Result<U256> {
 		self.consume_store_reads(1)?;
 		Ok(<TokensMinted<T>>::get(self.id)
 			.checked_add(1)
@@ -912,7 +907,7 @@
 	/// @param tokenIds IDs of the minted NFTs
 	#[solidity(hide)]
 	#[weight(<SelfWeightOf<T>>::create_multiple_items(token_ids.len() as u32))]
-	fn mint_bulk(&mut self, caller: caller, to: address, token_ids: Vec<uint256>) -> Result<bool> {
+	fn mint_bulk(&mut self, caller: caller, to: address, token_ids: Vec<U256>) -> Result<bool> {
 		let caller = T::CrossAccountId::from_eth(caller);
 		let to = T::CrossAccountId::from_eth(to);
 		let mut expected_index = <TokensMinted<T>>::get(self.id)
@@ -953,7 +948,7 @@
 		&mut self,
 		caller: caller,
 		to: address,
-		tokens: Vec<(uint256, string)>,
+		tokens: Vec<(U256, string)>,
 	) -> Result<bool> {
 		let key = key::url();
 		let caller = T::CrossAccountId::from_eth(caller);
@@ -1005,7 +1000,7 @@
 		caller: caller,
 		to: eth::CrossAddress,
 		properties: Vec<eth::Property>,
-	) -> Result<uint256> {
+	) -> Result<U256> {
 		let token_id = <TokensMinted<T>>::get(self.id)
 			.checked_add(1)
 			.ok_or("item id overflow")?;
modifiedpallets/refungible/src/erc.rsdiffbeforeafterboth
--- a/pallets/refungible/src/erc.rs
+++ b/pallets/refungible/src/erc.rs
@@ -39,7 +39,7 @@
 use pallet_evm::{account::CrossAccountId, PrecompileHandle};
 use pallet_evm_coder_substrate::{call, dispatch_to_evm};
 use pallet_structure::{SelfWeightOf as StructureWeight, weights::WeightInfo as _};
-use sp_core::{H160, Get};
+use sp_core::{H160, U256, Get};
 use sp_std::{collections::btree_map::BTreeMap, vec::Vec, vec};
 use up_data_structs::{
 	CollectionId, CollectionPropertiesVec, mapping::TokenAddressMapping, Property, PropertyKey,
@@ -125,7 +125,7 @@
 	fn set_property(
 		&mut self,
 		caller: caller,
-		token_id: uint256,
+		token_id: U256,
 		key: string,
 		value: bytes,
 	) -> Result<()> {
@@ -158,7 +158,7 @@
 	fn set_properties(
 		&mut self,
 		caller: caller,
-		token_id: uint256,
+		token_id: U256,
 		properties: Vec<eth::Property>,
 	) -> Result<()> {
 		let caller = T::CrossAccountId::from_eth(caller);
@@ -190,7 +190,7 @@
 	/// @param key Property key.
 	#[solidity(hide)]
 	#[weight(<SelfWeightOf<T>>::delete_token_properties(1))]
-	fn delete_property(&mut self, token_id: uint256, caller: caller, key: string) -> Result<()> {
+	fn delete_property(&mut self, token_id: U256, caller: caller, key: string) -> Result<()> {
 		let caller = T::CrossAccountId::from_eth(caller);
 		let token_id: u32 = token_id.try_into().map_err(|_| "token id overflow")?;
 		let key = <Vec<u8>>::from(key)
@@ -212,7 +212,7 @@
 	#[weight(<SelfWeightOf<T>>::delete_token_properties(keys.len() as u32))]
 	fn delete_properties(
 		&mut self,
-		token_id: uint256,
+		token_id: U256,
 		caller: caller,
 		keys: Vec<string>,
 	) -> Result<()> {
@@ -242,7 +242,7 @@
 	/// @param tokenId ID of the token.
 	/// @param key Property key.
 	/// @return Property value bytes
-	fn property(&self, token_id: uint256, key: string) -> Result<bytes> {
+	fn property(&self, token_id: U256, key: string) -> Result<bytes> {
 		let token_id: u32 = token_id.try_into().map_err(|_| "token id overflow")?;
 		let key = <Vec<u8>>::from(key)
 			.try_into()
@@ -266,7 +266,7 @@
 		#[indexed]
 		to: address,
 		#[indexed]
-		token_id: uint256,
+		token_id: U256,
 	},
 	/// @dev Not supported
 	Approval {
@@ -275,7 +275,7 @@
 		#[indexed]
 		approved: address,
 		#[indexed]
-		token_id: uint256,
+		token_id: U256,
 	},
 	/// @dev Not supported
 	#[allow(dead_code)]
@@ -319,7 +319,7 @@
 	///
 	/// @return token's const_metadata
 	#[solidity(rename_selector = "tokenURI")]
-	fn token_uri(&self, token_id: uint256) -> Result<string> {
+	fn token_uri(&self, token_id: U256) -> Result<string> {
 		let token_id_u32: u32 = token_id.try_into().map_err(|_| "token id overflow")?;
 
 		match get_token_property(self, token_id_u32, &key::url()).as_deref() {
@@ -365,12 +365,12 @@
 	/// @param index A counter less than `totalSupply()`
 	/// @return The token identifier for the `index`th NFT,
 	///  (sort order not specified)
-	fn token_by_index(&self, index: uint256) -> Result<uint256> {
+	fn token_by_index(&self, index: U256) -> Result<U256> {
 		Ok(index)
 	}
 
 	/// Not implemented
-	fn token_of_owner_by_index(&self, _owner: address, _index: uint256) -> Result<uint256> {
+	fn token_of_owner_by_index(&self, _owner: address, _index: U256) -> Result<U256> {
 		// TODO: Not implemetable
 		Err("not implemented".into())
 	}
@@ -378,7 +378,7 @@
 	/// @notice Count RFTs tracked by this contract
 	/// @return A count of valid RFTs tracked by this contract, where each one of
 	///  them has an assigned and queryable owner not equal to the zero address
-	fn total_supply(&self) -> Result<uint256> {
+	fn total_supply(&self) -> Result<U256> {
 		self.consume_store_reads(1)?;
 		Ok(<Pallet<T>>::total_supply(self).into())
 	}
@@ -393,7 +393,7 @@
 	///  function throws for queries about the zero address.
 	/// @param owner An address for whom to query the balance
 	/// @return The number of RFTs owned by `owner`, possibly zero
-	fn balance_of(&self, owner: address) -> Result<uint256> {
+	fn balance_of(&self, owner: address) -> Result<U256> {
 		self.consume_store_reads(1)?;
 		let owner = T::CrossAccountId::from_eth(owner);
 		let balance = <AccountBalance<T>>::get((self.id, owner));
@@ -407,7 +407,7 @@
 	///  the tokens that are partially owned.
 	/// @param tokenId The identifier for an RFT
 	/// @return The address of the owner of the RFT
-	fn owner_of(&self, token_id: uint256) -> Result<address> {
+	fn owner_of(&self, token_id: U256) -> Result<address> {
 		self.consume_store_reads(2)?;
 		let token = token_id.try_into()?;
 		let owner = <Pallet<T>>::token_owner(self.id, token);
@@ -422,7 +422,7 @@
 		&mut self,
 		_from: address,
 		_to: address,
-		_token_id: uint256,
+		_token_id: U256,
 		_data: bytes,
 	) -> Result<()> {
 		// TODO: Not implemetable
@@ -431,12 +431,7 @@
 
 	/// @dev Not implemented
 	#[solidity(rename_selector = "safeTransferFrom")]
-	fn safe_transfer_from(
-		&mut self,
-		_from: address,
-		_to: address,
-		_token_id: uint256,
-	) -> Result<()> {
+	fn safe_transfer_from(&mut self, _from: address, _to: address, _token_id: U256) -> Result<()> {
 		// TODO: Not implemetable
 		Err("not implemented".into())
 	}
@@ -457,7 +452,7 @@
 		caller: caller,
 		from: address,
 		to: address,
-		token_id: uint256,
+		token_id: U256,
 	) -> Result<()> {
 		let caller = T::CrossAccountId::from_eth(caller);
 		let from = T::CrossAccountId::from_eth(from);
@@ -477,7 +472,7 @@
 	}
 
 	/// @dev Not implemented
-	fn approve(&mut self, _caller: caller, _approved: address, _token_id: uint256) -> Result<()> {
+	fn approve(&mut self, _caller: caller, _approved: address, _token_id: U256) -> Result<()> {
 		Err("not implemented".into())
 	}
 
@@ -501,7 +496,7 @@
 	}
 
 	/// @dev Not implemented
-	fn get_approved(&self, _token_id: uint256) -> Result<address> {
+	fn get_approved(&self, _token_id: U256) -> Result<address> {
 		// TODO: Not implemetable
 		Err("not implemented".into())
 	}
@@ -556,7 +551,7 @@
 	///  operator of the current owner.
 	/// @param tokenId The RFT to approve
 	#[weight(<SelfWeightOf<T>>::burn_item_fully())]
-	fn burn(&mut self, caller: caller, token_id: uint256) -> Result<()> {
+	fn burn(&mut self, caller: caller, token_id: U256) -> Result<()> {
 		let caller = T::CrossAccountId::from_eth(caller);
 		let token = token_id.try_into()?;
 
@@ -575,8 +570,8 @@
 	/// @param to The new owner
 	/// @return uint256 The id of the newly minted token
 	#[weight(<SelfWeightOf<T>>::create_item())]
-	fn mint(&mut self, caller: caller, to: address) -> Result<uint256> {
-		let token_id: uint256 = <TokensMinted<T>>::get(self.id)
+	fn mint(&mut self, caller: caller, to: address) -> Result<U256> {
+		let token_id: U256 = <TokensMinted<T>>::get(self.id)
 			.checked_add(1)
 			.ok_or("item id overflow")?
 			.into();
@@ -591,7 +586,7 @@
 	/// @param tokenId ID of the minted RFT
 	#[solidity(hide, rename_selector = "mint")]
 	#[weight(<SelfWeightOf<T>>::create_item())]
-	fn mint_check_id(&mut self, caller: caller, to: address, token_id: uint256) -> Result<bool> {
+	fn mint_check_id(&mut self, caller: caller, to: address, token_id: U256) -> Result<bool> {
 		let caller = T::CrossAccountId::from_eth(caller);
 		let to = T::CrossAccountId::from_eth(to);
 		let token_id: u32 = token_id.try_into()?;
@@ -637,8 +632,8 @@
 		caller: caller,
 		to: address,
 		token_uri: string,
-	) -> Result<uint256> {
-		let token_id: uint256 = <TokensMinted<T>>::get(self.id)
+	) -> Result<U256> {
+		let token_id: U256 = <TokensMinted<T>>::get(self.id)
 			.checked_add(1)
 			.ok_or("item id overflow")?
 			.into();
@@ -658,7 +653,7 @@
 		&mut self,
 		caller: caller,
 		to: address,
-		token_id: uint256,
+		token_id: U256,
 		token_uri: string,
 	) -> Result<bool> {
 		let key = key::url();
@@ -768,7 +763,7 @@
 	/// Returns the owner (in cross format) of the token.
 	///
 	/// @param tokenId Id for the token.
-	fn cross_owner_of(&self, token_id: uint256) -> Result<eth::CrossAddress> {
+	fn cross_owner_of(&self, token_id: U256) -> Result<eth::CrossAddress> {
 		Self::token_owner(&self, token_id.try_into()?)
 			.map(|o| eth::CrossAddress::from_sub_cross_account::<T>(&o))
 			.ok_or(Error::Revert("key too large".into()))
@@ -779,7 +774,7 @@
 	/// @param tokenId Id for the token.
 	/// @param keys Properties keys. Empty keys for all propertyes.
 	/// @return Vector of properties key/value pairs.
-	fn properties(&self, token_id: uint256, keys: Vec<string>) -> Result<Vec<eth::Property>> {
+	fn properties(&self, token_id: U256, keys: Vec<string>) -> Result<Vec<eth::Property>> {
 		let keys = keys
 			.into_iter()
 			.map(|key| {
@@ -805,7 +800,7 @@
 	/// @param to The new owner
 	/// @param tokenId The RFT to transfer
 	#[weight(<SelfWeightOf<T>>::transfer_creating_removing())]
-	fn transfer(&mut self, caller: caller, to: address, token_id: uint256) -> Result<()> {
+	fn transfer(&mut self, caller: caller, to: address, token_id: U256) -> Result<()> {
 		let caller = T::CrossAccountId::from_eth(caller);
 		let to = T::CrossAccountId::from_eth(to);
 		let token = token_id.try_into()?;
@@ -832,7 +827,7 @@
 		&mut self,
 		caller: caller,
 		to: eth::CrossAddress,
-		token_id: uint256,
+		token_id: U256,
 	) -> Result<()> {
 		let caller = T::CrossAccountId::from_eth(caller);
 		let to = to.into_sub_cross_account::<T>()?;
@@ -861,7 +856,7 @@
 		caller: caller,
 		from: eth::CrossAddress,
 		to: eth::CrossAddress,
-		token_id: uint256,
+		token_id: U256,
 	) -> Result<()> {
 		let caller = T::CrossAccountId::from_eth(caller);
 		let from = from.into_sub_cross_account::<T>()?;
@@ -888,7 +883,7 @@
 	/// @param tokenId The RFT to transfer
 	#[solidity(hide)]
 	#[weight(<SelfWeightOf<T>>::burn_from())]
-	fn burn_from(&mut self, caller: caller, from: address, token_id: uint256) -> Result<()> {
+	fn burn_from(&mut self, caller: caller, from: address, token_id: U256) -> Result<()> {
 		let caller = T::CrossAccountId::from_eth(caller);
 		let from = T::CrossAccountId::from_eth(from);
 		let token = token_id.try_into()?;
@@ -916,7 +911,7 @@
 		&mut self,
 		caller: caller,
 		from: eth::CrossAddress,
-		token_id: uint256,
+		token_id: U256,
 	) -> Result<()> {
 		let caller = T::CrossAccountId::from_eth(caller);
 		let from = from.into_sub_cross_account::<T>()?;
@@ -934,7 +929,7 @@
 	}
 
 	/// @notice Returns next free RFT ID.
-	fn next_token_id(&self) -> Result<uint256> {
+	fn next_token_id(&self) -> Result<U256> {
 		self.consume_store_reads(1)?;
 		Ok(<TokensMinted<T>>::get(self.id)
 			.checked_add(1)
@@ -949,7 +944,7 @@
 	/// @param tokenIds IDs of the minted RFTs
 	#[solidity(hide)]
 	#[weight(<SelfWeightOf<T>>::create_multiple_items(token_ids.len() as u32))]
-	fn mint_bulk(&mut self, caller: caller, to: address, token_ids: Vec<uint256>) -> Result<bool> {
+	fn mint_bulk(&mut self, caller: caller, to: address, token_ids: Vec<U256>) -> Result<bool> {
 		let caller = T::CrossAccountId::from_eth(caller);
 		let to = T::CrossAccountId::from_eth(to);
 		let mut expected_index = <TokensMinted<T>>::get(self.id)
@@ -996,7 +991,7 @@
 		&mut self,
 		caller: caller,
 		to: address,
-		tokens: Vec<(uint256, string)>,
+		tokens: Vec<(U256, string)>,
 	) -> Result<bool> {
 		let key = key::url();
 		let caller = T::CrossAccountId::from_eth(caller);
@@ -1054,7 +1049,7 @@
 		caller: caller,
 		to: eth::CrossAddress,
 		properties: Vec<eth::Property>,
-	) -> Result<uint256> {
+	) -> Result<U256> {
 		let token_id = <TokensMinted<T>>::get(self.id)
 			.checked_add(1)
 			.ok_or("item id overflow")?;
@@ -1093,7 +1088,7 @@
 	/// Returns EVM address for refungible token
 	///
 	/// @param token ID of the token
-	fn token_contract_address(&self, token: uint256) -> Result<address> {
+	fn token_contract_address(&self, token: U256) -> Result<address> {
 		Ok(T::EvmTokenAddressMapping::token_to_address(
 			self.id,
 			token.try_into().map_err(|_| "token id overflow")?,
modifiedpallets/refungible/src/erc_token.rsdiffbeforeafterboth
--- a/pallets/refungible/src/erc_token.rs
+++ b/pallets/refungible/src/erc_token.rs
@@ -37,6 +37,7 @@
 use pallet_evm_coder_substrate::{call, dispatch_to_evm, WithRecorder};
 use pallet_structure::{SelfWeightOf as StructureWeight, weights::WeightInfo as _};
 use sp_std::vec::Vec;
+use sp_core::U256;
 use up_data_structs::TokenId;
 
 use crate::{
@@ -55,7 +56,7 @@
 		Ok(collection_id_to_address(self.id))
 	}
 
-	fn parent_token_id(&self) -> Result<uint256> {
+	fn parent_token_id(&self) -> Result<U256> {
 		Ok(self.1.into())
 	}
 }
@@ -71,7 +72,7 @@
 		from: address,
 		#[indexed]
 		to: address,
-		value: uint256,
+		value: U256,
 	},
 	/// @dev This event is emitted when the amount of tokens (value) is approved
 	/// by the owner to be used by the spender.
@@ -80,7 +81,7 @@
 		owner: address,
 		#[indexed]
 		spender: address,
-		value: uint256,
+		value: U256,
 	},
 }
 
@@ -103,7 +104,7 @@
 	}
 
 	/// @dev Total number of tokens in existence
-	fn total_supply(&self) -> Result<uint256> {
+	fn total_supply(&self) -> Result<U256> {
 		self.consume_store_reads(1)?;
 		Ok(<TotalSupply<T>>::get((self.id, self.1)).into())
 	}
@@ -117,7 +118,7 @@
 	/// @dev Gets the balance of the specified address.
 	/// @param owner The address to query the balance of.
 	/// @return An uint256 representing the amount owned by the passed address.
-	fn balance_of(&self, owner: address) -> Result<uint256> {
+	fn balance_of(&self, owner: address) -> Result<U256> {
 		self.consume_store_reads(1)?;
 		let owner = T::CrossAccountId::from_eth(owner);
 		let balance = <Balance<T>>::get((self.id, self.1, owner));
@@ -128,7 +129,7 @@
 	/// @param to The address to transfer to.
 	/// @param amount The amount to be transferred.
 	#[weight(<CommonWeights<T>>::transfer())]
-	fn transfer(&mut self, caller: caller, to: address, amount: uint256) -> Result<bool> {
+	fn transfer(&mut self, caller: caller, to: address, amount: U256) -> Result<bool> {
 		let caller = T::CrossAccountId::from_eth(caller);
 		let to = T::CrossAccountId::from_eth(to);
 		let amount = amount.try_into().map_err(|_| "amount overflow")?;
@@ -151,7 +152,7 @@
 		caller: caller,
 		from: address,
 		to: address,
-		amount: uint256,
+		amount: U256,
 	) -> Result<bool> {
 		let caller = T::CrossAccountId::from_eth(caller);
 		let from = T::CrossAccountId::from_eth(from);
@@ -174,7 +175,7 @@
 	/// @param spender The address which will spend the funds.
 	/// @param amount The amount of tokens to be spent.
 	#[weight(<SelfWeightOf<T>>::approve())]
-	fn approve(&mut self, caller: caller, spender: address, amount: uint256) -> Result<bool> {
+	fn approve(&mut self, caller: caller, spender: address, amount: U256) -> Result<bool> {
 		let caller = T::CrossAccountId::from_eth(caller);
 		let spender = T::CrossAccountId::from_eth(spender);
 		let amount = amount.try_into().map_err(|_| "amount overflow")?;
@@ -188,7 +189,7 @@
 	/// @param owner address The address which owns the funds.
 	/// @param spender address The address which will spend the funds.
 	/// @return A uint256 specifying the amount of tokens still available for the spender.
-	fn allowance(&self, owner: address, spender: address) -> Result<uint256> {
+	fn allowance(&self, owner: address, spender: address) -> Result<U256> {
 		self.consume_store_reads(1)?;
 		let owner = T::CrossAccountId::from_eth(owner);
 		let spender = T::CrossAccountId::from_eth(spender);
@@ -208,7 +209,7 @@
 	/// @param amount The amount that will be burnt.
 	#[weight(<SelfWeightOf<T>>::burn_from())]
 	#[solidity(hide)]
-	fn burn_from(&mut self, caller: caller, from: address, amount: uint256) -> Result<bool> {
+	fn burn_from(&mut self, caller: caller, from: address, amount: U256) -> Result<bool> {
 		let caller = T::CrossAccountId::from_eth(caller);
 		let from = T::CrossAccountId::from_eth(from);
 		let amount = amount.try_into().map_err(|_| "amount overflow")?;
@@ -230,7 +231,7 @@
 		&mut self,
 		caller: caller,
 		from: pallet_common::eth::CrossAddress,
-		amount: uint256,
+		amount: U256,
 	) -> Result<bool> {
 		let caller = T::CrossAccountId::from_eth(caller);
 		let from = from.into_sub_cross_account::<T>()?;
@@ -256,7 +257,7 @@
 		&mut self,
 		caller: caller,
 		spender: pallet_common::eth::CrossAddress,
-		amount: uint256,
+		amount: U256,
 	) -> Result<bool> {
 		let caller = T::CrossAccountId::from_eth(caller);
 		let spender = spender.into_sub_cross_account::<T>()?;
@@ -270,7 +271,7 @@
 	///  Throws if `msg.sender` doesn't owns all of the tokens.
 	/// @param amount New total amount of the tokens.
 	#[weight(<SelfWeightOf<T>>::repartition_item())]
-	fn repartition(&mut self, caller: caller, amount: uint256) -> Result<bool> {
+	fn repartition(&mut self, caller: caller, amount: U256) -> Result<bool> {
 		let caller = T::CrossAccountId::from_eth(caller);
 		let amount = amount.try_into().map_err(|_| "amount overflow")?;
 
@@ -286,7 +287,7 @@
 		&mut self,
 		caller: caller,
 		to: pallet_common::eth::CrossAddress,
-		amount: uint256,
+		amount: U256,
 	) -> Result<bool> {
 		let caller = T::CrossAccountId::from_eth(caller);
 		let to = to.into_sub_cross_account::<T>()?;
@@ -310,7 +311,7 @@
 		caller: caller,
 		from: pallet_common::eth::CrossAddress,
 		to: pallet_common::eth::CrossAddress,
-		amount: uint256,
+		amount: U256,
 	) -> Result<bool> {
 		let caller = T::CrossAccountId::from_eth(caller);
 		let from = from.into_sub_cross_account::<T>()?;
modifiedtests/src/eth/abi/nonFungible.jsondiffbeforeafterboth
--- a/tests/src/eth/abi/nonFungible.json
+++ b/tests/src/eth/abi/nonFungible.json
@@ -51,6 +51,12 @@
   },
   {
     "anonymous": false,
+    "inputs": [],
+    "name": "MintingFinished",
+    "type": "event"
+  },
+  {
+    "anonymous": false,
     "inputs": [
       {
         "indexed": true,
@@ -417,6 +423,13 @@
     "type": "function"
   },
   {
+    "inputs": [],
+    "name": "finishMinting",
+    "outputs": [{ "internalType": "bool", "name": "", "type": "bool" }],
+    "stateMutability": "nonpayable",
+    "type": "function"
+  },
+  {
     "inputs": [
       { "internalType": "uint256", "name": "tokenId", "type": "uint256" }
     ],
@@ -504,6 +517,13 @@
   },
   {
     "inputs": [],
+    "name": "mintingFinished",
+    "outputs": [{ "internalType": "bool", "name": "", "type": "bool" }],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
     "name": "name",
     "outputs": [{ "internalType": "string", "name": "", "type": "string" }],
     "stateMutability": "view",
modifiedtests/src/eth/abi/reFungible.jsondiffbeforeafterboth
--- a/tests/src/eth/abi/reFungible.json
+++ b/tests/src/eth/abi/reFungible.json
@@ -51,6 +51,12 @@
   },
   {
     "anonymous": false,
+    "inputs": [],
+    "name": "MintingFinished",
+    "type": "event"
+  },
+  {
+    "anonymous": false,
     "inputs": [
       {
         "indexed": true,
@@ -399,6 +405,13 @@
     "type": "function"
   },
   {
+    "inputs": [],
+    "name": "finishMinting",
+    "outputs": [{ "internalType": "bool", "name": "", "type": "bool" }],
+    "stateMutability": "nonpayable",
+    "type": "function"
+  },
+  {
     "inputs": [
       { "internalType": "uint256", "name": "tokenId", "type": "uint256" }
     ],
@@ -486,6 +499,13 @@
   },
   {
     "inputs": [],
+    "name": "mintingFinished",
+    "outputs": [{ "internalType": "bool", "name": "", "type": "bool" }],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
     "name": "name",
     "outputs": [{ "internalType": "string", "name": "", "type": "string" }],
     "stateMutability": "view",
modifiedtests/src/eth/abi/reFungibleToken.jsondiffbeforeafterboth
--- a/tests/src/eth/abi/reFungibleToken.json
+++ b/tests/src/eth/abi/reFungibleToken.json
@@ -98,6 +98,16 @@
   },
   {
     "inputs": [
+      { "internalType": "address", "name": "from", "type": "address" },
+      { "internalType": "uint256", "name": "amount", "type": "uint256" }
+    ],
+    "name": "burnFrom",
+    "outputs": [{ "internalType": "bool", "name": "", "type": "bool" }],
+    "stateMutability": "nonpayable",
+    "type": "function"
+  },
+  {
+    "inputs": [
       {
         "components": [
           { "internalType": "address", "name": "eth", "type": "address" },