git.delta.rocks / unique-network / refs/commits / df30e33c6969

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 crate::Config;18use codec::{Encode, EncodeLike, Decode, MaxEncodedLen};19use sp_core::H160;20use scale_info::{Type, TypeInfo};21use core::cmp::Ordering;22use serde::{Serialize, Deserialize};23use pallet_evm::AddressMapping;24use sp_std::vec::Vec;25use sp_std::clone::Clone;26pub use up_evm_mapping::EvmBackwardsAddressMapping;2728pub trait CrossAccountId<AccountId>:29	Encode + EncodeLike + Decode + TypeInfo + MaxEncodedLen + Clone + PartialEq + Ord + core::fmt::Debug30// +31// Serialize + Deserialize<'static>32{33	fn as_sub(&self) -> &AccountId;34	fn as_eth(&self) -> &H160;3536	fn from_sub(account: AccountId) -> Self;37	fn from_eth(account: H160) -> Self;3839	fn conv_eq(&self, other: &Self) -> bool;40}4142#[derive(Encode, Decode, Serialize, Deserialize, TypeInfo, MaxEncodedLen)]43#[serde(rename_all = "camelCase")]44enum BasicCrossAccountIdRepr<AccountId> {45	Substrate(AccountId),46	Ethereum(H160),47}4849#[derive(PartialEq, Eq)]50pub struct BasicCrossAccountId<T: Config> {51	/// If true - then ethereum is canonical encoding52	from_ethereum: bool,53	substrate: T::AccountId,54	ethereum: H160,55}5657impl<T: Config> MaxEncodedLen for BasicCrossAccountId<T> {58	fn max_encoded_len() -> usize {59		<BasicCrossAccountIdRepr<T::AccountId>>::max_encoded_len()60	}61}6263impl<T: Config> TypeInfo for BasicCrossAccountId<T> {64	type Identity = Self;6566	fn type_info() -> Type {67		<BasicCrossAccountIdRepr<T::AccountId>>::type_info()68	}69}7071impl<T: Config> core::fmt::Debug for BasicCrossAccountId<T> {72	fn fmt(&self, fmt: &mut core::fmt::Formatter) -> core::fmt::Result {73		if self.from_ethereum {74			fmt.debug_tuple("CrossAccountId::Ethereum")75				.field(&self.ethereum)76				.finish()77		} else {78			fmt.debug_tuple("CrossAccountId::Substrate")79				.field(&self.substrate)80				.finish()81		}82	}83}8485impl<T: Config> PartialOrd for BasicCrossAccountId<T> {86	fn partial_cmp(&self, other: &Self) -> Option<Ordering> {87		Some(self.substrate.cmp(&other.substrate))88	}89}9091impl<T: Config> Ord for BasicCrossAccountId<T> {92	fn cmp(&self, other: &Self) -> Ordering {93		self.partial_cmp(other)94			.expect("substrate account is total ordered")95	}96}9798impl<T: Config> Clone for BasicCrossAccountId<T> {99	fn clone(&self) -> Self {100		Self {101			from_ethereum: self.from_ethereum,102			substrate: self.substrate.clone(),103			ethereum: self.ethereum,104		}105	}106}107impl<T: Config> Encode for BasicCrossAccountId<T> {108	fn encode(&self) -> Vec<u8> {109		BasicCrossAccountIdRepr::from(self.clone()).encode()110	}111}112impl<T: Config> EncodeLike for BasicCrossAccountId<T> {}113impl<T: Config> Decode for BasicCrossAccountId<T> {114	fn decode<I>(input: &mut I) -> Result<Self, codec::Error>115	where116		I: codec::Input,117	{118		Ok(BasicCrossAccountIdRepr::decode(input)?.into())119	}120}121impl<T> Serialize for BasicCrossAccountId<T>122where123	T: Config,124	T::AccountId: Serialize,125{126	fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>127	where128		S: serde::Serializer,129	{130		let repr = BasicCrossAccountIdRepr::from(self.clone());131		(&repr).serialize(serializer)132	}133}134impl<'de, T> Deserialize<'de> for BasicCrossAccountId<T>135where136	T: Config,137	T::AccountId: Deserialize<'de>,138{139	fn deserialize<D>(deserializer: D) -> Result<Self, D::Error>140	where141		D: serde::Deserializer<'de>,142	{143		Ok(BasicCrossAccountIdRepr::deserialize(deserializer)?.into())144	}145}146impl<T: Config> CrossAccountId<T::AccountId> for BasicCrossAccountId<T> {147	fn as_sub(&self) -> &T::AccountId {148		&self.substrate149	}150	fn as_eth(&self) -> &H160 {151		&self.ethereum152	}153	fn from_sub(substrate: T::AccountId) -> Self {154		Self {155			ethereum: T::EvmBackwardsAddressMapping::from_account_id(substrate.clone()),156			substrate,157			from_ethereum: false,158		}159	}160	fn from_eth(ethereum: H160) -> Self {161		Self {162			ethereum,163			substrate: T::EvmAddressMapping::into_account_id(ethereum),164			from_ethereum: true,165		}166	}167	fn conv_eq(&self, other: &Self) -> bool {168		if self.from_ethereum == other.from_ethereum {169			self.substrate == other.substrate && self.ethereum == other.ethereum170		} else if self.from_ethereum {171			// ethereum is canonical encoding, but we need to compare derived address172			self.substrate == other.substrate173		} else {174			self.ethereum == other.ethereum175		}176	}177}178impl<T: Config> From<BasicCrossAccountIdRepr<T::AccountId>> for BasicCrossAccountId<T> {179	fn from(repr: BasicCrossAccountIdRepr<T::AccountId>) -> Self {180		match repr {181			BasicCrossAccountIdRepr::Substrate(s) => Self::from_sub(s),182			BasicCrossAccountIdRepr::Ethereum(e) => Self::from_eth(e),183		}184	}185}186impl<T: Config> From<BasicCrossAccountId<T>> for BasicCrossAccountIdRepr<T::AccountId> {187	fn from(v: BasicCrossAccountId<T>) -> Self {188		if v.from_ethereum {189			BasicCrossAccountIdRepr::Ethereum(*v.as_eth())190		} else {191			BasicCrossAccountIdRepr::Substrate(v.as_sub().clone())192		}193	}194}