git.delta.rocks / unique-network / refs/commits / b238f7bade8b

difftreelog

added cross methods: `burnFromCross` , `transferCross`, `approveCorss` in `ERC20` refungible pallet interface

PraetorP2022-12-06parent: #9a4bd0b.patch.diff
in: master

5 files changed

modifiedpallets/refungible/src/erc_token.rsdiffbeforeafterboth
before · pallets/refungible/src/erc_token.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//! # Refungible Pallet EVM API for token pieces18//!19//! Provides ERC-20 standart support implementation and EVM API for unique extensions for Refungible Pallet.20//! Method implementations are mostly doing parameter conversion and calling Nonfungible Pallet methods.2122extern crate alloc;2324#[cfg(not(feature = "std"))]25use alloc::format;2627use core::{28	char::{REPLACEMENT_CHARACTER, decode_utf16},29	convert::TryInto,30	ops::Deref,31};32use evm_coder::{33	abi::AbiType, ToLog, execution::*, generate_stubgen, solidity_interface, types::*, weight,34};35use pallet_common::{36	CommonWeightInfo,37	erc::{CommonEvmHandler, PrecompileResult},38	eth::collection_id_to_address,39};40use pallet_evm::{account::CrossAccountId, PrecompileHandle};41use pallet_evm_coder_substrate::{call, dispatch_to_evm, WithRecorder};42use pallet_structure::{SelfWeightOf as StructureWeight, weights::WeightInfo as _};43use sp_std::vec::Vec;44use up_data_structs::TokenId;4546use crate::{47	Allowance, Balance, common::CommonWeights, Config, Pallet, RefungibleHandle, SelfWeightOf,48	TotalSupply, weights::WeightInfo,49};5051pub struct RefungibleTokenHandle<T: Config>(pub RefungibleHandle<T>, pub TokenId);5253#[solidity_interface(name = ERC1633)]54impl<T: Config> RefungibleTokenHandle<T> {55	fn parent_token(&self) -> Result<address> {56		Ok(collection_id_to_address(self.id))57	}5859	fn parent_token_id(&self) -> Result<uint256> {60		Ok(self.1.into())61	}62}6364#[derive(ToLog)]65pub enum ERC20Events {66	/// @dev This event is emitted when the amount of tokens (value) is sent67	/// from the from address to the to address. In the case of minting new68	/// tokens, the transfer is usually from the 0 address while in the case69	/// of burning tokens the transfer is to 0.70	Transfer {71		#[indexed]72		from: address,73		#[indexed]74		to: address,75		value: uint256,76	},77	/// @dev This event is emitted when the amount of tokens (value) is approved78	/// by the owner to be used by the spender.79	Approval {80		#[indexed]81		owner: address,82		#[indexed]83		spender: address,84		value: uint256,85	},86}8788/// @title Standard ERC20 token89///90/// @dev Implementation of the basic standard token.91/// https://github.com/ethereum/EIPs/blob/master/EIPS/eip-20.md92#[solidity_interface(name = ERC20, events(ERC20Events))]93impl<T: Config> RefungibleTokenHandle<T> {94	/// @return the name of the token.95	fn name(&self) -> Result<string> {96		Ok(decode_utf16(self.name.iter().copied())97			.map(|r| r.unwrap_or(REPLACEMENT_CHARACTER))98			.collect::<string>())99	}100101	/// @return the symbol of the token.102	fn symbol(&self) -> Result<string> {103		Ok(string::from_utf8_lossy(&self.token_prefix).into())104	}105106	/// @dev Total number of tokens in existence107	fn total_supply(&self) -> Result<uint256> {108		self.consume_store_reads(1)?;109		Ok(<TotalSupply<T>>::get((self.id, self.1)).into())110	}111112	/// @dev Not supported113	fn decimals(&self) -> Result<uint8> {114		// Decimals aren't supported for refungible tokens115		Ok(0)116	}117118	/// @dev Gets the balance of the specified address.119	/// @param owner The address to query the balance of.120	/// @return An uint256 representing the amount owned by the passed address.121	fn balance_of(&self, owner: address) -> Result<uint256> {122		self.consume_store_reads(1)?;123		let owner = T::CrossAccountId::from_eth(owner);124		let balance = <Balance<T>>::get((self.id, self.1, owner));125		Ok(balance.into())126	}127128	/// @dev Transfer token for a specified address129	/// @param to The address to transfer to.130	/// @param amount The amount to be transferred.131	#[weight(<CommonWeights<T>>::transfer())]132	fn transfer(&mut self, caller: caller, to: address, amount: uint256) -> Result<bool> {133		let caller = T::CrossAccountId::from_eth(caller);134		let to = T::CrossAccountId::from_eth(to);135		let amount = amount.try_into().map_err(|_| "amount overflow")?;136		let budget = self137			.recorder138			.weight_calls_budget(<StructureWeight<T>>::find_parent());139140		<Pallet<T>>::transfer(self, &caller, &to, self.1, amount, &budget)141			.map_err(dispatch_to_evm::<T>)?;142		Ok(true)143	}144145	/// @dev Transfer tokens from one address to another146	/// @param from address The address which you want to send tokens from147	/// @param to address The address which you want to transfer to148	/// @param amount uint256 the amount of tokens to be transferred149	#[weight(<CommonWeights<T>>::transfer_from())]150	fn transfer_from(151		&mut self,152		caller: caller,153		from: address,154		to: address,155		amount: uint256,156	) -> Result<bool> {157		let caller = T::CrossAccountId::from_eth(caller);158		let from = T::CrossAccountId::from_eth(from);159		let to = T::CrossAccountId::from_eth(to);160		let amount = amount.try_into().map_err(|_| "amount overflow")?;161		let budget = self162			.recorder163			.weight_calls_budget(<StructureWeight<T>>::find_parent());164165		<Pallet<T>>::transfer_from(self, &caller, &from, &to, self.1, amount, &budget)166			.map_err(dispatch_to_evm::<T>)?;167		Ok(true)168	}169170	/// @dev Approve the passed address to spend the specified amount of tokens on behalf of `msg.sender`.171	/// Beware that changing an allowance with this method brings the risk that someone may use both the old172	/// and the new allowance by unfortunate transaction ordering. One possible solution to mitigate this173	/// race condition is to first reduce the spender's allowance to 0 and set the desired value afterwards:174	/// https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729175	/// @param spender The address which will spend the funds.176	/// @param amount The amount of tokens to be spent.177	#[weight(<SelfWeightOf<T>>::approve())]178	fn approve(&mut self, caller: caller, spender: address, amount: uint256) -> Result<bool> {179		let caller = T::CrossAccountId::from_eth(caller);180		let spender = T::CrossAccountId::from_eth(spender);181		let amount = amount.try_into().map_err(|_| "amount overflow")?;182183		<Pallet<T>>::set_allowance(self, &caller, &spender, self.1, amount)184			.map_err(dispatch_to_evm::<T>)?;185		Ok(true)186	}187188	/// @dev Function to check the amount of tokens that an owner allowed to a spender.189	/// @param owner address The address which owns the funds.190	/// @param spender address The address which will spend the funds.191	/// @return A uint256 specifying the amount of tokens still available for the spender.192	fn allowance(&self, owner: address, spender: address) -> Result<uint256> {193		self.consume_store_reads(1)?;194		let owner = T::CrossAccountId::from_eth(owner);195		let spender = T::CrossAccountId::from_eth(spender);196197		Ok(<Allowance<T>>::get((self.id, self.1, owner, spender)).into())198	}199}200201#[solidity_interface(name = ERC20UniqueExtensions)]202impl<T: Config> RefungibleTokenHandle<T> {203	/// @dev Function that burns an amount of the token of a given account,204	/// deducting from the sender's allowance for said account.205	/// @param from The account whose tokens will be burnt.206	/// @param amount The amount that will be burnt.207	#[weight(<SelfWeightOf<T>>::burn_from())]208	fn burn_from(&mut self, caller: caller, from: address, amount: uint256) -> Result<bool> {209		let caller = T::CrossAccountId::from_eth(caller);210		let from = T::CrossAccountId::from_eth(from);211		let amount = amount.try_into().map_err(|_| "amount overflow")?;212		let budget = self213			.recorder214			.weight_calls_budget(<StructureWeight<T>>::find_parent());215216		<Pallet<T>>::burn_from(self, &caller, &from, self.1, amount, &budget)217			.map_err(dispatch_to_evm::<T>)?;218		Ok(true)219	}220221	/// @dev Function that changes total amount of the tokens.222	///  Throws if `msg.sender` doesn't owns all of the tokens.223	/// @param amount New total amount of the tokens.224	#[weight(<SelfWeightOf<T>>::repartition_item())]225	fn repartition(&mut self, caller: caller, amount: uint256) -> Result<bool> {226		let caller = T::CrossAccountId::from_eth(caller);227		let amount = amount.try_into().map_err(|_| "amount overflow")?;228229		<Pallet<T>>::repartition(self, &caller, self.1, amount).map_err(dispatch_to_evm::<T>)?;230		Ok(true)231	}232}233234impl<T: Config> RefungibleTokenHandle<T> {235	pub fn into_inner(self) -> RefungibleHandle<T> {236		self.0237	}238	pub fn common_mut(&mut self) -> &mut RefungibleHandle<T> {239		&mut self.0240	}241}242243impl<T: Config> WithRecorder<T> for RefungibleTokenHandle<T> {244	fn recorder(&self) -> &pallet_evm_coder_substrate::SubstrateRecorder<T> {245		self.0.recorder()246	}247	fn into_recorder(self) -> pallet_evm_coder_substrate::SubstrateRecorder<T> {248		self.0.into_recorder()249	}250}251252impl<T: Config> Deref for RefungibleTokenHandle<T> {253	type Target = RefungibleHandle<T>;254255	fn deref(&self) -> &Self::Target {256		&self.0257	}258}259260#[solidity_interface(261	name = UniqueRefungibleToken,262	is(ERC20, ERC20UniqueExtensions, ERC1633)263)]264impl<T: Config> RefungibleTokenHandle<T> where T::AccountId: From<[u8; 32]> {}265266generate_stubgen!(gen_impl, UniqueRefungibleTokenCall<()>, true);267generate_stubgen!(gen_iface, UniqueRefungibleTokenCall<()>, false);268269impl<T: Config> CommonEvmHandler for RefungibleTokenHandle<T>270where271	T::AccountId: From<[u8; 32]>,272{273	const CODE: &'static [u8] = include_bytes!("./stubs/UniqueRefungibleToken.raw");274275	fn call(self, handle: &mut impl PrecompileHandle) -> Option<PrecompileResult> {276		call::<T, UniqueRefungibleTokenCall<T>, _, _>(handle, self)277	}278}
after · pallets/refungible/src/erc_token.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//! # Refungible Pallet EVM API for token pieces18//!19//! Provides ERC-20 standart support implementation and EVM API for unique extensions for Refungible Pallet.20//! Method implementations are mostly doing parameter conversion and calling Nonfungible Pallet methods.2122extern crate alloc;2324#[cfg(not(feature = "std"))]25use alloc::format;2627use core::{28	char::{REPLACEMENT_CHARACTER, decode_utf16},29	convert::TryInto,30	ops::Deref,31};32use evm_coder::{33	abi::AbiType, ToLog, execution::*, generate_stubgen, solidity_interface, types::*, weight,34};35use pallet_common::{36	CommonWeightInfo,37	erc::{CommonEvmHandler, PrecompileResult},38	eth::{collection_id_to_address, EthCrossAccount},39};40use pallet_evm::{account::CrossAccountId, PrecompileHandle};41use pallet_evm_coder_substrate::{call, dispatch_to_evm, WithRecorder};42use pallet_structure::{SelfWeightOf as StructureWeight, weights::WeightInfo as _};43use sp_std::vec::Vec;44use up_data_structs::TokenId;4546use crate::{47	Allowance, Balance, common::CommonWeights, Config, Pallet, RefungibleHandle, SelfWeightOf,48	TotalSupply, weights::WeightInfo,49};5051pub struct RefungibleTokenHandle<T: Config>(pub RefungibleHandle<T>, pub TokenId);5253#[solidity_interface(name = ERC1633)]54impl<T: Config> RefungibleTokenHandle<T> {55	fn parent_token(&self) -> Result<address> {56		Ok(collection_id_to_address(self.id))57	}5859	fn parent_token_id(&self) -> Result<uint256> {60		Ok(self.1.into())61	}62}6364#[derive(ToLog)]65pub enum ERC20Events {66	/// @dev This event is emitted when the amount of tokens (value) is sent67	/// from the from address to the to address. In the case of minting new68	/// tokens, the transfer is usually from the 0 address while in the case69	/// of burning tokens the transfer is to 0.70	Transfer {71		#[indexed]72		from: address,73		#[indexed]74		to: address,75		value: uint256,76	},77	/// @dev This event is emitted when the amount of tokens (value) is approved78	/// by the owner to be used by the spender.79	Approval {80		#[indexed]81		owner: address,82		#[indexed]83		spender: address,84		value: uint256,85	},86}8788/// @title Standard ERC20 token89///90/// @dev Implementation of the basic standard token.91/// https://github.com/ethereum/EIPs/blob/master/EIPS/eip-20.md92#[solidity_interface(name = ERC20, events(ERC20Events))]93impl<T: Config> RefungibleTokenHandle<T> {94	/// @return the name of the token.95	fn name(&self) -> Result<string> {96		Ok(decode_utf16(self.name.iter().copied())97			.map(|r| r.unwrap_or(REPLACEMENT_CHARACTER))98			.collect::<string>())99	}100101	/// @return the symbol of the token.102	fn symbol(&self) -> Result<string> {103		Ok(string::from_utf8_lossy(&self.token_prefix).into())104	}105106	/// @dev Total number of tokens in existence107	fn total_supply(&self) -> Result<uint256> {108		self.consume_store_reads(1)?;109		Ok(<TotalSupply<T>>::get((self.id, self.1)).into())110	}111112	/// @dev Not supported113	fn decimals(&self) -> Result<uint8> {114		// Decimals aren't supported for refungible tokens115		Ok(0)116	}117118	/// @dev Gets the balance of the specified address.119	/// @param owner The address to query the balance of.120	/// @return An uint256 representing the amount owned by the passed address.121	fn balance_of(&self, owner: address) -> Result<uint256> {122		self.consume_store_reads(1)?;123		let owner = T::CrossAccountId::from_eth(owner);124		let balance = <Balance<T>>::get((self.id, self.1, owner));125		Ok(balance.into())126	}127128	/// @dev Transfer token for a specified address129	/// @param to The address to transfer to.130	/// @param amount The amount to be transferred.131	#[weight(<CommonWeights<T>>::transfer())]132	fn transfer(&mut self, caller: caller, to: address, amount: uint256) -> Result<bool> {133		let caller = T::CrossAccountId::from_eth(caller);134		let to = T::CrossAccountId::from_eth(to);135		let amount = amount.try_into().map_err(|_| "amount overflow")?;136		let budget = self137			.recorder138			.weight_calls_budget(<StructureWeight<T>>::find_parent());139140		<Pallet<T>>::transfer(self, &caller, &to, self.1, amount, &budget)141			.map_err(dispatch_to_evm::<T>)?;142		Ok(true)143	}144145	/// @dev Transfer tokens from one address to another146	/// @param from address The address which you want to send tokens from147	/// @param to address The address which you want to transfer to148	/// @param amount uint256 the amount of tokens to be transferred149	#[weight(<CommonWeights<T>>::transfer_from())]150	fn transfer_from(151		&mut self,152		caller: caller,153		from: address,154		to: address,155		amount: uint256,156	) -> Result<bool> {157		let caller = T::CrossAccountId::from_eth(caller);158		let from = T::CrossAccountId::from_eth(from);159		let to = T::CrossAccountId::from_eth(to);160		let amount = amount.try_into().map_err(|_| "amount overflow")?;161		let budget = self162			.recorder163			.weight_calls_budget(<StructureWeight<T>>::find_parent());164165		<Pallet<T>>::transfer_from(self, &caller, &from, &to, self.1, amount, &budget)166			.map_err(dispatch_to_evm::<T>)?;167		Ok(true)168	}169170	/// @dev Approve the passed address to spend the specified amount of tokens on behalf of `msg.sender`.171	/// Beware that changing an allowance with this method brings the risk that someone may use both the old172	/// and the new allowance by unfortunate transaction ordering. One possible solution to mitigate this173	/// race condition is to first reduce the spender's allowance to 0 and set the desired value afterwards:174	/// https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729175	/// @param spender The address which will spend the funds.176	/// @param amount The amount of tokens to be spent.177	#[weight(<SelfWeightOf<T>>::approve())]178	fn approve(&mut self, caller: caller, spender: address, amount: uint256) -> Result<bool> {179		let caller = T::CrossAccountId::from_eth(caller);180		let spender = T::CrossAccountId::from_eth(spender);181		let amount = amount.try_into().map_err(|_| "amount overflow")?;182183		<Pallet<T>>::set_allowance(self, &caller, &spender, self.1, amount)184			.map_err(dispatch_to_evm::<T>)?;185		Ok(true)186	}187188	/// @dev Function to check the amount of tokens that an owner allowed to a spender.189	/// @param owner address The address which owns the funds.190	/// @param spender address The address which will spend the funds.191	/// @return A uint256 specifying the amount of tokens still available for the spender.192	fn allowance(&self, owner: address, spender: address) -> Result<uint256> {193		self.consume_store_reads(1)?;194		let owner = T::CrossAccountId::from_eth(owner);195		let spender = T::CrossAccountId::from_eth(spender);196197		Ok(<Allowance<T>>::get((self.id, self.1, owner, spender)).into())198	}199}200201#[solidity_interface(name = ERC20UniqueExtensions)]202impl<T: Config> RefungibleTokenHandle<T>203where204	T::AccountId: From<[u8; 32]>,205{206	/// @dev Function that burns an amount of the token of a given account,207	/// deducting from the sender's allowance for said account.208	/// @param from The account whose tokens will be burnt.209	/// @param amount The amount that will be burnt.210	#[weight(<SelfWeightOf<T>>::burn_from())]211	fn burn_from(&mut self, caller: caller, from: address, amount: uint256) -> Result<bool> {212		let caller = T::CrossAccountId::from_eth(caller);213		let from = T::CrossAccountId::from_eth(from);214		let amount = amount.try_into().map_err(|_| "amount overflow")?;215		let budget = self216			.recorder217			.weight_calls_budget(<StructureWeight<T>>::find_parent());218219		<Pallet<T>>::burn_from(self, &caller, &from, self.1, amount, &budget)220			.map_err(dispatch_to_evm::<T>)?;221		Ok(true)222	}223224	/// @dev Function that burns an amount of the token of a given account,225	/// deducting from the sender's allowance for said account.226	/// @param from The account whose tokens will be burnt.227	/// @param amount The amount that will be burnt.228	#[weight(<SelfWeightOf<T>>::burn_from())]229	fn burn_from_cross(230		&mut self,231		caller: caller,232		from: EthCrossAccount,233		amount: uint256,234	) -> Result<bool> {235		let caller = T::CrossAccountId::from_eth(caller);236		let from = from.into_sub_cross_account::<T>()?;237		let amount = amount.try_into().map_err(|_| "amount overflow")?;238		let budget = self239			.recorder240			.weight_calls_budget(<StructureWeight<T>>::find_parent());241242		<Pallet<T>>::burn_from(self, &caller, &from, self.1, amount, &budget)243			.map_err(dispatch_to_evm::<T>)?;244		Ok(true)245	}246247	/// @dev Approve the passed address to spend the specified amount of tokens on behalf of `msg.sender`.248	/// Beware that changing an allowance with this method brings the risk that someone may use both the old249	/// and the new allowance by unfortunate transaction ordering. One possible solution to mitigate this250	/// race condition is to first reduce the spender's allowance to 0 and set the desired value afterwards:251	/// https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729252	/// @param spender The crossaccount which will spend the funds.253	/// @param amount The amount of tokens to be spent.254	#[weight(<SelfWeightOf<T>>::approve())]255	fn approve_cross(256		&mut self,257		caller: caller,258		spender: EthCrossAccount,259		amount: uint256,260	) -> Result<bool> {261		let caller = T::CrossAccountId::from_eth(caller);262		let spender = spender.into_sub_cross_account::<T>()?;263		let amount = amount.try_into().map_err(|_| "amount overflow")?;264265		<Pallet<T>>::set_allowance(self, &caller, &spender, self.1, amount)266			.map_err(dispatch_to_evm::<T>)?;267		Ok(true)268	}269	/// @dev Function that changes total amount of the tokens.270	///  Throws if `msg.sender` doesn't owns all of the tokens.271	/// @param amount New total amount of the tokens.272	#[weight(<SelfWeightOf<T>>::repartition_item())]273	fn repartition(&mut self, caller: caller, amount: uint256) -> Result<bool> {274		let caller = T::CrossAccountId::from_eth(caller);275		let amount = amount.try_into().map_err(|_| "amount overflow")?;276277		<Pallet<T>>::repartition(self, &caller, self.1, amount).map_err(dispatch_to_evm::<T>)?;278		Ok(true)279	}280281	/// @dev Transfer token for a specified address282	/// @param to The crossaccount to transfer to.283	/// @param amount The amount to be transferred.284	#[weight(<CommonWeights<T>>::transfer())]285	fn transfer_cross(286		&mut self,287		caller: caller,288		to: EthCrossAccount,289		amount: uint256,290	) -> Result<bool> {291		let caller = T::CrossAccountId::from_eth(caller);292		let to = to.into_sub_cross_account::<T>()?;293		let amount = amount.try_into().map_err(|_| "amount overflow")?;294		let budget = self295			.recorder296			.weight_calls_budget(<StructureWeight<T>>::find_parent());297298		<Pallet<T>>::transfer(self, &caller, &to, self.1, amount, &budget)299			.map_err(dispatch_to_evm::<T>)?;300		Ok(true)301	}302}303304impl<T: Config> RefungibleTokenHandle<T> {305	pub fn into_inner(self) -> RefungibleHandle<T> {306		self.0307	}308	pub fn common_mut(&mut self) -> &mut RefungibleHandle<T> {309		&mut self.0310	}311}312313impl<T: Config> WithRecorder<T> for RefungibleTokenHandle<T> {314	fn recorder(&self) -> &pallet_evm_coder_substrate::SubstrateRecorder<T> {315		self.0.recorder()316	}317	fn into_recorder(self) -> pallet_evm_coder_substrate::SubstrateRecorder<T> {318		self.0.into_recorder()319	}320}321322impl<T: Config> Deref for RefungibleTokenHandle<T> {323	type Target = RefungibleHandle<T>;324325	fn deref(&self) -> &Self::Target {326		&self.0327	}328}329330#[solidity_interface(331	name = UniqueRefungibleToken,332	is(ERC20, ERC20UniqueExtensions, ERC1633)333)]334impl<T: Config> RefungibleTokenHandle<T> where T::AccountId: From<[u8; 32]> {}335336generate_stubgen!(gen_impl, UniqueRefungibleTokenCall<()>, true);337generate_stubgen!(gen_iface, UniqueRefungibleTokenCall<()>, false);338339impl<T: Config> CommonEvmHandler for RefungibleTokenHandle<T>340where341	T::AccountId: From<[u8; 32]>,342{343	const CODE: &'static [u8] = include_bytes!("./stubs/UniqueRefungibleToken.raw");344345	fn call(self, handle: &mut impl PrecompileHandle) -> Option<PrecompileResult> {346		call::<T, UniqueRefungibleTokenCall<T>, _, _>(handle, self)347	}348}
modifiedpallets/refungible/src/stubs/UniqueRefungibleToken.soldiffbeforeafterboth
--- a/pallets/refungible/src/stubs/UniqueRefungibleToken.sol
+++ b/pallets/refungible/src/stubs/UniqueRefungibleToken.sol
@@ -36,7 +36,7 @@
 	}
 }
 
-/// @dev the ERC-165 identifier for this interface is 0xab8deb37
+/// @dev the ERC-165 identifier for this interface is 0x34b53e20
 contract ERC20UniqueExtensions is Dummy, ERC165 {
 	/// @dev Function that burns an amount of the token of a given account,
 	/// deducting from the sender's allowance for said account.
@@ -52,6 +52,37 @@
 		return false;
 	}
 
+	/// @dev Function that burns an amount of the token of a given account,
+	/// deducting from the sender's allowance for said account.
+	/// @param from The account whose tokens will be burnt.
+	/// @param amount The amount that will be burnt.
+	/// @dev EVM selector for this function is: 0xbb2f5a58,
+	///  or in textual repr: burnFromCross((address,uint256),uint256)
+	function burnFromCross(EthCrossAccount memory from, uint256 amount) public returns (bool) {
+		require(false, stub_error);
+		from;
+		amount;
+		dummy = 0;
+		return false;
+	}
+
+	/// @dev Approve the passed address to spend the specified amount of tokens on behalf of `msg.sender`.
+	/// Beware that changing an allowance with this method brings the risk that someone may use both the old
+	/// and the new allowance by unfortunate transaction ordering. One possible solution to mitigate this
+	/// race condition is to first reduce the spender's allowance to 0 and set the desired value afterwards:
+	/// https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729
+	/// @param spender The crossaccount which will spend the funds.
+	/// @param amount The amount of tokens to be spent.
+	/// @dev EVM selector for this function is: 0x0ecd0ab0,
+	///  or in textual repr: approveCross((address,uint256),uint256)
+	function approveCross(EthCrossAccount memory spender, uint256 amount) public returns (bool) {
+		require(false, stub_error);
+		spender;
+		amount;
+		dummy = 0;
+		return false;
+	}
+
 	/// @dev Function that changes total amount of the tokens.
 	///  Throws if `msg.sender` doesn't owns all of the tokens.
 	/// @param amount New total amount of the tokens.
@@ -63,6 +94,25 @@
 		dummy = 0;
 		return false;
 	}
+
+	/// @dev Transfer token for a specified address
+	/// @param to The crossaccount to transfer to.
+	/// @param amount The amount to be transferred.
+	/// @dev EVM selector for this function is: 0x2ada85ff,
+	///  or in textual repr: transferCross((address,uint256),uint256)
+	function transferCross(EthCrossAccount memory to, uint256 amount) public returns (bool) {
+		require(false, stub_error);
+		to;
+		amount;
+		dummy = 0;
+		return false;
+	}
+}
+
+/// @dev Cross account struct
+struct EthCrossAccount {
+	address eth;
+	uint256 sub;
 }
 
 /// @dev inlined interface
modifiedtests/src/eth/abi/reFungibleToken.jsondiffbeforeafterboth
--- a/tests/src/eth/abi/reFungibleToken.json
+++ b/tests/src/eth/abi/reFungibleToken.json
@@ -71,6 +71,24 @@
   },
   {
     "inputs": [
+      {
+        "components": [
+          { "internalType": "address", "name": "eth", "type": "address" },
+          { "internalType": "uint256", "name": "sub", "type": "uint256" }
+        ],
+        "internalType": "struct EthCrossAccount",
+        "name": "spender",
+        "type": "tuple"
+      },
+      { "internalType": "uint256", "name": "amount", "type": "uint256" }
+    ],
+    "name": "approveCross",
+    "outputs": [{ "internalType": "bool", "name": "", "type": "bool" }],
+    "stateMutability": "nonpayable",
+    "type": "function"
+  },
+  {
+    "inputs": [
       { "internalType": "address", "name": "owner", "type": "address" }
     ],
     "name": "balanceOf",
@@ -89,6 +107,24 @@
     "type": "function"
   },
   {
+    "inputs": [
+      {
+        "components": [
+          { "internalType": "address", "name": "eth", "type": "address" },
+          { "internalType": "uint256", "name": "sub", "type": "uint256" }
+        ],
+        "internalType": "struct EthCrossAccount",
+        "name": "from",
+        "type": "tuple"
+      },
+      { "internalType": "uint256", "name": "amount", "type": "uint256" }
+    ],
+    "name": "burnFromCross",
+    "outputs": [{ "internalType": "bool", "name": "", "type": "bool" }],
+    "stateMutability": "nonpayable",
+    "type": "function"
+  },
+  {
     "inputs": [],
     "name": "decimals",
     "outputs": [{ "internalType": "uint8", "name": "", "type": "uint8" }],
@@ -160,6 +196,24 @@
   },
   {
     "inputs": [
+      {
+        "components": [
+          { "internalType": "address", "name": "eth", "type": "address" },
+          { "internalType": "uint256", "name": "sub", "type": "uint256" }
+        ],
+        "internalType": "struct EthCrossAccount",
+        "name": "to",
+        "type": "tuple"
+      },
+      { "internalType": "uint256", "name": "amount", "type": "uint256" }
+    ],
+    "name": "transferCross",
+    "outputs": [{ "internalType": "bool", "name": "", "type": "bool" }],
+    "stateMutability": "nonpayable",
+    "type": "function"
+  },
+  {
+    "inputs": [
       { "internalType": "address", "name": "from", "type": "address" },
       { "internalType": "address", "name": "to", "type": "address" },
       { "internalType": "uint256", "name": "amount", "type": "uint256" }
modifiedtests/src/eth/api/UniqueRefungibleToken.soldiffbeforeafterboth
--- a/tests/src/eth/api/UniqueRefungibleToken.sol
+++ b/tests/src/eth/api/UniqueRefungibleToken.sol
@@ -23,7 +23,7 @@
 	function parentTokenId() external view returns (uint256);
 }
 
-/// @dev the ERC-165 identifier for this interface is 0xab8deb37
+/// @dev the ERC-165 identifier for this interface is 0x34b53e20
 interface ERC20UniqueExtensions is Dummy, ERC165 {
 	/// @dev Function that burns an amount of the token of a given account,
 	/// deducting from the sender's allowance for said account.
@@ -33,12 +33,44 @@
 	///  or in textual repr: burnFrom(address,uint256)
 	function burnFrom(address from, uint256 amount) external returns (bool);
 
+	/// @dev Function that burns an amount of the token of a given account,
+	/// deducting from the sender's allowance for said account.
+	/// @param from The account whose tokens will be burnt.
+	/// @param amount The amount that will be burnt.
+	/// @dev EVM selector for this function is: 0xbb2f5a58,
+	///  or in textual repr: burnFromCross((address,uint256),uint256)
+	function burnFromCross(EthCrossAccount memory from, uint256 amount) external returns (bool);
+
+	/// @dev Approve the passed address to spend the specified amount of tokens on behalf of `msg.sender`.
+	/// Beware that changing an allowance with this method brings the risk that someone may use both the old
+	/// and the new allowance by unfortunate transaction ordering. One possible solution to mitigate this
+	/// race condition is to first reduce the spender's allowance to 0 and set the desired value afterwards:
+	/// https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729
+	/// @param spender The crossaccount which will spend the funds.
+	/// @param amount The amount of tokens to be spent.
+	/// @dev EVM selector for this function is: 0x0ecd0ab0,
+	///  or in textual repr: approveCross((address,uint256),uint256)
+	function approveCross(EthCrossAccount memory spender, uint256 amount) external returns (bool);
+
 	/// @dev Function that changes total amount of the tokens.
 	///  Throws if `msg.sender` doesn't owns all of the tokens.
 	/// @param amount New total amount of the tokens.
 	/// @dev EVM selector for this function is: 0xd2418ca7,
 	///  or in textual repr: repartition(uint256)
 	function repartition(uint256 amount) external returns (bool);
+
+	/// @dev Transfer token for a specified address
+	/// @param to The crossaccount to transfer to.
+	/// @param amount The amount to be transferred.
+	/// @dev EVM selector for this function is: 0x2ada85ff,
+	///  or in textual repr: transferCross((address,uint256),uint256)
+	function transferCross(EthCrossAccount memory to, uint256 amount) external returns (bool);
+}
+
+/// @dev Cross account struct
+struct EthCrossAccount {
+	address eth;
+	uint256 sub;
 }
 
 /// @dev inlined interface
modifiedtests/src/eth/reFungibleToken.test.tsdiffbeforeafterboth
--- a/tests/src/eth/reFungibleToken.test.ts
+++ b/tests/src/eth/reFungibleToken.test.ts
@@ -159,7 +159,33 @@
       expect(+allowance).to.equal(100);
     }
   });
+  
+  itEth('Can perform approveCross()', async ({helper}) => {
+    const owner = await helper.eth.createAccountWithBalance(donor);
+    const spender = helper.eth.createAccount();
+    const spenderCross = helper.ethCrossAccount.fromAddress(spender);
+
+    const collection = await helper.rft.mintCollection(alice);
+    const {tokenId} = await collection.mintToken(alice, 200n, {Ethereum: owner});
+
+    const tokenAddress = helper.ethAddress.fromTokenId(collection.collectionId, tokenId);
+    const contract = helper.ethNativeContract.rftToken(tokenAddress, owner);
+
+    {
+      const result = await contract.methods.approveCross(spenderCross, 100).send({from: owner});
+      const event = result.events.Approval;
+      expect(event.address).to.be.equal(tokenAddress);
+      expect(event.returnValues.owner).to.be.equal(owner);
+      expect(event.returnValues.spender).to.be.equal(spender);
+      expect(event.returnValues.value).to.be.equal('100');
+    }
 
+    {
+      const allowance = await contract.methods.allowance(owner, spender).call();
+      expect(+allowance).to.equal(100);
+    }
+  });
+  
   itEth('Can perform transferFrom()', async ({helper}) => {
     const owner = await helper.eth.createAccountWithBalance(donor);
     const spender = await helper.eth.createAccountWithBalance(donor);
@@ -226,7 +252,7 @@
       expect(+balance).to.equal(50);
     }
   });
-
+  
   [
     'transfer',
     // 'transferCross', // TODO
@@ -267,6 +293,35 @@
       expect(await rftReceiver.getTop10Owners()).to.deep.eq([{Ethereum: owner.toLowerCase()}]);
     }));
 
+  itEth('Can perform transferCross()', async ({helper}) => {
+    const owner = await helper.eth.createAccountWithBalance(donor);
+    const receiver = helper.eth.createAccount();
+    const receiverCross = helper.ethCrossAccount.fromAddress(receiver);
+    const collection = await helper.rft.mintCollection(alice);
+    const {tokenId} = await collection.mintToken(alice, 200n, {Ethereum: owner});
+
+    const tokenAddress = helper.ethAddress.fromTokenId(collection.collectionId, tokenId);
+    const contract = helper.ethNativeContract.rftToken(tokenAddress, owner);
+
+    {
+      const result = await contract.methods.transferCross(receiverCross, 50).send({from: owner});
+      const event = result.events.Transfer;
+      expect(event.address).to.be.equal(tokenAddress);
+      expect(event.returnValues.from).to.be.equal(owner);
+      expect(event.returnValues.to).to.be.equal(receiver);
+      expect(event.returnValues.value).to.be.equal('50');
+    }
+
+    {
+      const balance = await contract.methods.balanceOf(owner).call();
+      expect(+balance).to.equal(150);
+    }
+
+    {
+      const balance = await contract.methods.balanceOf(receiver).call();
+      expect(+balance).to.equal(50);
+    }
+  });
   itEth('Can perform repartition()', async ({helper}) => {
     const owner = await helper.eth.createAccountWithBalance(donor);
     const receiver = await helper.eth.createAccountWithBalance(donor);
@@ -353,6 +408,25 @@
     expect(event.returnValues.to).to.be.equal(receiver);
     expect(event.returnValues.tokenId).to.be.equal(tokenId);
   });
+  
+  itEth('Can perform burnFromCross()', async ({helper}) => {
+    const owner = await helper.eth.createAccountWithBalance(donor);
+    const ownerCross = helper.ethCrossAccount.fromAddress(owner);
+    const spender = await helper.eth.createAccountWithBalance(donor);
+    const spenderCross = helper.ethCrossAccount.fromAddress(spender);
+
+    const collection = await helper.rft.mintCollection(alice);
+    const {tokenId} = await collection.mintToken(alice, 200n, {Ethereum: owner});
+
+    const tokenAddress = helper.ethAddress.fromTokenId(collection.collectionId, tokenId);
+    const contract = helper.ethNativeContract.rftToken(tokenAddress, owner);
+
+    await contract.methods.approveCross(spenderCross, 100).send({from: owner});
+    
+    await expect(contract.methods.burnFromCross(ownerCross, 50).send({from: spender})).to.be.fulfilled;
+    await expect(contract.methods.burnFromCross(ownerCross, 100).send({from: spender})).to.be.rejected;
+    expect(await contract.methods.balanceOf(owner).call({from: owner})).to.be.equal('150');
+  });
 });
 
 describe('Refungible: Fees', () => {