git.delta.rocks / unique-network / refs/commits / 898c743eda26

--- /dev/null
+++ b/pallets/refungible/src/erc.rs
@@ -0,0 +1,32 @@
+extern crate alloc;
+use evm_coder::{generate_stubgen, solidity_interface, types::*};
+
+use pallet_common::{CollectionHandle, erc::CollectionCall, erc::CommonEvmHandler};
+
+use pallet_evm::PrecompileHandle;
+use pallet_evm_coder_substrate::call;
+
+use crate::{Config, RefungibleHandle};
+
+#[solidity_interface(
+	name = "UniqueRFT",
+	is(via("CollectionHandle<T>", common_mut, Collection),)
+)]
+impl<T: Config> RefungibleHandle<T> where T::AccountId: From<[u8; 32]> {}
+
+// Not a tests, but code generators
+generate_stubgen!(gen_impl, UniqueRFTCall<()>, true);
+generate_stubgen!(gen_iface, UniqueRFTCall<()>, false);
+
+impl<T: Config> CommonEvmHandler for RefungibleHandle<T>
+where
+	T::AccountId: From<[u8; 32]>,
+{
+	const CODE: &'static [u8] = include_bytes!("./stubs/UniqueRefungible.raw");
+	fn call(
+		self,
+		handle: &mut impl PrecompileHandle,
+	) -> Option<pallet_common::erc::PrecompileResult> {
+		call::<T, UniqueRFTCall<T>, _, _>(handle, self)
+	}
+}

--- /dev/null
+++ b/pallets/refungible/src/erc_token.rs
@@ -0,0 +1,195 @@
+// Copyright 2019-2022 Unique Network (Gibraltar) Ltd.
+// This file is part of Unique Network.
+
+// Unique Network is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// Unique Network is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with Unique Network. If not, see <http://www.gnu.org/licenses/>.
+
+extern crate alloc;
+use core::{
+	char::{REPLACEMENT_CHARACTER, decode_utf16},
+	convert::TryInto,
+	ops::Deref,
+};
+use evm_coder::{ToLog, execution::*, generate_stubgen, solidity_interface, types::*, weight};
+use pallet_common::{
+	CommonWeightInfo,
+	erc::{CommonEvmHandler, PrecompileResult},
+};
+use pallet_evm::{account::CrossAccountId, PrecompileHandle};
+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 up_data_structs::TokenId;
+
+use crate::{
+	Allowance, Balance, common::CommonWeights, Config, Pallet, RefungibleHandle, SelfWeightOf,
+	weights::WeightInfo, TotalSupply,
+};
+
+pub struct RefungibleTokenHandle<T: Config>(pub RefungibleHandle<T>, pub TokenId);
+
+#[derive(ToLog)]
+pub enum ERC20Events {
+	Transfer {
+		#[indexed]
+		from: address,
+		#[indexed]
+		to: address,
+		value: uint256,
+	},
+	Approval {
+		#[indexed]
+		owner: address,
+		#[indexed]
+		spender: address,
+		value: uint256,
+	},
+}
+
+#[solidity_interface(name = "ERC20", events(ERC20Events))]
+impl<T: Config> RefungibleTokenHandle<T> {
+	fn name(&self) -> Result<string> {
+		Ok(decode_utf16(self.name.iter().copied())
+			.map(|r| r.unwrap_or(REPLACEMENT_CHARACTER))
+			.collect::<string>())
+	}
+	fn symbol(&self) -> Result<string> {
+		Ok(string::from_utf8_lossy(&self.token_prefix).into())
+	}
+	fn total_supply(&self) -> Result<uint256> {
+		self.consume_store_reads(1)?;
+		Ok(<TotalSupply<T>>::get((self.id, self.1)).into())
+	}
+
+	fn decimals(&self) -> Result<uint8> {
+		// Decimals aren't supported for refungible tokens
+		Ok(0)
+	}
+
+	fn balance_of(&self, owner: address) -> Result<uint256> {
+		self.consume_store_reads(1)?;
+		let owner = T::CrossAccountId::from_eth(owner);
+		let balance = <Balance<T>>::get((self.id, self.1, owner));
+		Ok(balance.into())
+	}
+	#[weight(<CommonWeights<T>>::transfer())]
+	fn transfer(&mut self, caller: caller, to: address, amount: uint256) -> 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")?;
+		let budget = self
+			.recorder
+			.weight_calls_budget(<StructureWeight<T>>::find_parent());
+
+		<Pallet<T>>::transfer(self, &caller, &to, self.1, amount, &budget)
+			.map_err(|_| "transfer error")?;
+		Ok(true)
+	}
+	#[weight(<CommonWeights<T>>::transfer_from())]
+	fn transfer_from(
+		&mut self,
+		caller: caller,
+		from: address,
+		to: address,
+		amount: uint256,
+	) -> Result<bool> {
+		let caller = T::CrossAccountId::from_eth(caller);
+		let from = T::CrossAccountId::from_eth(from);
+		let to = T::CrossAccountId::from_eth(to);
+		let amount = amount.try_into().map_err(|_| "amount overflow")?;
+		let budget = self
+			.recorder
+			.weight_calls_budget(<StructureWeight<T>>::find_parent());
+
+		<Pallet<T>>::transfer_from(self, &caller, &from, &to, self.1, amount, &budget)
+			.map_err(dispatch_to_evm::<T>)?;
+		Ok(true)
+	}
+	#[weight(<SelfWeightOf<T>>::approve())]
+	fn approve(&mut self, caller: caller, spender: address, amount: uint256) -> 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")?;
+
+		<Pallet<T>>::set_allowance(self, &caller, &spender, self.1, amount)
+			.map_err(dispatch_to_evm::<T>)?;
+		Ok(true)
+	}
+	fn allowance(&self, owner: address, spender: address) -> Result<uint256> {
+		self.consume_store_reads(1)?;
+		let owner = T::CrossAccountId::from_eth(owner);
+		let spender = T::CrossAccountId::from_eth(spender);
+
+		Ok(<Allowance<T>>::get((self.id, self.1, owner, spender)).into())
+	}
+}
+
+#[solidity_interface(name = "ERC20UniqueExtensions")]
+impl<T: Config> RefungibleTokenHandle<T> {
+	#[weight(<SelfWeightOf<T>>::burn_from())]
+	fn burn_from(&mut self, caller: caller, from: address, amount: uint256) -> 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")?;
+		let budget = self
+			.recorder
+			.weight_calls_budget(<StructureWeight<T>>::find_parent());
+
+		<Pallet<T>>::burn_from(self, &caller, &from, self.1, amount, &budget)
+			.map_err(dispatch_to_evm::<T>)?;
+		Ok(true)
+	}
+}
+
+impl<T: Config> RefungibleTokenHandle<T> {
+	pub fn into_inner(self) -> RefungibleHandle<T> {
+		self.0
+	}
+	pub fn common_mut(&mut self) -> &mut RefungibleHandle<T> {
+		&mut self.0
+	}
+}
+
+impl<T: Config> WithRecorder<T> for RefungibleTokenHandle<T> {
+	fn recorder(&self) -> &pallet_evm_coder_substrate::SubstrateRecorder<T> {
+		self.0.recorder()
+	}
+	fn into_recorder(self) -> pallet_evm_coder_substrate::SubstrateRecorder<T> {
+		self.0.into_recorder()
+	}
+}
+
+impl<T: Config> Deref for RefungibleTokenHandle<T> {
+	type Target = RefungibleHandle<T>;
+
+	fn deref(&self) -> &Self::Target {
+		&self.0
+	}
+}
+
+#[solidity_interface(name = "UniqueRefungibleToken", is(ERC20, ERC20UniqueExtensions,))]
+impl<T: Config> RefungibleTokenHandle<T> where T::AccountId: From<[u8; 32]> {}
+
+generate_stubgen!(gen_impl, UniqueRefungibleTokenCall<()>, true);
+generate_stubgen!(gen_iface, UniqueRefungibleTokenCall<()>, false);
+
+impl<T: Config> CommonEvmHandler for RefungibleTokenHandle<T>
+where
+	T::AccountId: From<[u8; 32]>,
+{
+	const CODE: &'static [u8] = include_bytes!("./stubs/UniqueRefungibleToken.raw");
+
+	fn call(self, handle: &mut impl PrecompileHandle) -> Option<PrecompileResult> {
+		call::<T, UniqueRefungibleTokenCall<T>, _, _>(handle, self)
+	}
+}