git.delta.rocks / unique-network / refs/commits / 7c75ab3aafa0

--- /dev/null
+++ b/pallets/balances-adapter/src/erc.rs
@@ -0,0 +1,159 @@
+use crate::Config;
+use evm_coder::{abi::AbiType, AbiCoder, ToLog, generate_stubgen, solidity_interface, types::*};
+use pallet_common::erc::{CommonEvmHandler, PrecompileHandle, PrecompileResult};
+use pallet_evm_coder_substrate::{
+	call, dispatch_to_evm,
+	execution::{PreDispatch, Result},
+	frontier_contract, WithRecorder, SubstrateRecorder,
+};
+use sp_core::{U256};
+use sp_std::vec::Vec;
+
+frontier_contract! {
+	macro_rules! NativeFungibleHandle_result {...}
+	impl<T: Config> Contract for NativeFungibleHandle<T> {...}
+}
+
+#[derive(ToLog)]
+pub enum ERC20Events {
+	Transfer {
+		#[indexed]
+		from: Address,
+		#[indexed]
+		to: Address,
+		value: U256,
+	},
+	Approval {
+		#[indexed]
+		owner: Address,
+		#[indexed]
+		spender: Address,
+		value: U256,
+	},
+}
+
+pub struct NativeFungibleHandle<T: Config>(SubstrateRecorder<T>);
+
+impl<T: Config> WithRecorder<T> for NativeFungibleHandle<T> {
+	fn recorder(&self) -> &pallet_evm_coder_substrate::SubstrateRecorder<T> {
+		&self.0
+	}
+	fn into_recorder(self) -> pallet_evm_coder_substrate::SubstrateRecorder<T> {
+		self.0
+	}
+}
+
+#[solidity_interface(name = ERC20, events(ERC20Events), enum(derive(PreDispatch)), enum_attr(weight), expect_selector = 0x942e8b22)]
+impl<T: Config> NativeFungibleHandle<T> {
+	fn name(&self) -> Result<String> {
+		// Ok(decode_utf16(self.name.iter().copied())
+		// 	.map(|r| r.unwrap_or(REPLACEMENT_CHARACTER))
+		// 	.collect::<String>())
+		todo!()
+	}
+
+	fn symbol(&self) -> Result<String> {
+		// Ok(String::from_utf8_lossy(&self.token_prefix).into())
+		todo!()
+	}
+	fn total_supply(&self) -> Result<U256> {
+		// self.consume_store_reads(1)?;
+		// Ok(<TotalSupply<T>>::get(self.id).into())
+		todo!()
+	}
+
+	fn decimals(&self) -> Result<u8> {
+		// Ok(if let CollectionMode::Fungible(decimals) = &self.mode {
+		// 	*decimals
+		// } else {
+		// 	unreachable!()
+		// })
+		todo!()
+	}
+
+	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())
+		todo!()
+	}
+
+	// #[weight(<SelfWeightOf<T>>::transfer())]
+	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")?;
+		// let budget = self
+		// 	.recorder
+		// 	.weight_calls_budget(<StructureWeight<T>>::find_parent());
+
+		// <Pallet<T>>::transfer(self, &caller, &to, amount, &budget).map_err(|_| "transfer error")?;
+		// Ok(true)
+		todo!()
+	}
+
+	// #[weight(<SelfWeightOf<T>>::transfer_from())]
+	fn transfer_from(
+		&mut self,
+		caller: Caller,
+		from: Address,
+		to: Address,
+		amount: U256,
+	) -> 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, amount, &budget)
+		// 	.map_err(dispatch_to_evm::<T>)?;
+		// Ok(true)
+		todo!()
+	}
+
+	// #[weight(<SelfWeightOf<T>>::approve())]
+	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")?;
+
+		// <Pallet<T>>::set_allowance(self, &caller, &spender, amount)
+		// 	.map_err(dispatch_to_evm::<T>)?;
+		// Ok(true)
+		todo!()
+	}
+
+	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);
+
+		// Ok(<Allowance<T>>::get((self.id, owner, spender)).into())
+		todo!()
+	}
+}
+
+#[solidity_interface(
+	name = UniqueNativeFungible,
+	is(ERC20),
+	enum(derive(PreDispatch))
+)]
+impl<T: Config> NativeFungibleHandle<T> where T::AccountId: From<[u8; 32]> + AsRef<[u8; 32]> {}
+
+generate_stubgen!(gen_impl, UniqueNativeFungibleCall<()>, true);
+generate_stubgen!(gen_iface, UniqueNativeFungibleCall<()>, false);
+
+impl<T: Config> CommonEvmHandler for NativeFungibleHandle<T>
+where
+	T::AccountId: From<[u8; 32]> + AsRef<[u8; 32]>,
+{
+	const CODE: &'static [u8] = include_bytes!("./stubs/UniqueNativeFungible.raw");
+
+	fn call(self, handle: &mut impl PrecompileHandle) -> Option<PrecompileResult> {
+		call::<T, UniqueNativeFungibleCall<T>, _, _>(handle, self)
+	}
+}

--- /dev/null
+++ b/pallets/balances-adapter/src/stubs/UniqueNativeFungible.raw
@@ -0,0 +1 @@
+ 
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