git.delta.rocks / unique-network / refs/commits / d893d0cab9bc

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/>.1617use pallet_evm::{Precompile, PrecompileHandle, PrecompileResult, PrecompileSet, IsPrecompileResult};18use sp_core::H160;19use sp_std::marker::PhantomData;2021use pallet_evm_precompile_simple::{ECRecover};22use sr25519::Sr25519Precompile;2324mod sr25519;25mod utils;2627pub struct UniquePrecompiles<R>(PhantomData<R>);2829impl<R> UniquePrecompiles<R>30where31	R: pallet_evm::Config,32{33	pub fn new() -> Self {34		Self(Default::default())35	}36	pub fn used_addresses() -> [H160; 2] {37		[hash(1), hash(20482)]38	}39}4041impl<R> Default for UniquePrecompiles<R>42where43	R: pallet_evm::Config,44{45	fn default() -> Self {46		Self::new()47	}48}4950impl<R> PrecompileSet for UniquePrecompiles<R>51where52	R: pallet_evm::Config,53{54	fn execute(&self, handle: &mut impl PrecompileHandle) -> Option<PrecompileResult> {55		match handle.code_address() {56			a if a == hash(1) => Some(ECRecover::execute(handle)),57			// Sr25519     0x500258			a if a == hash(20482) => Some(Sr25519Precompile::<R>::execute(handle)),59			_ => None,60		}61	}6263	fn is_precompile(&self, address: H160, _gas: u64) -> IsPrecompileResult {64		IsPrecompileResult::Answer {65			is_precompile: Self::used_addresses().contains(&address),66			extra_cost: 0,67		}68	}69}7071fn hash(a: u64) -> H160 {72	H160::from_low_u64_be(a)73}