git.delta.rocks / unique-network / refs/commits / e2ee5ffc10f8

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 frame_support::{parameter_types, traits::Get};18use orml_traits::location::AbsoluteReserveProvider;19use orml_xcm_support::MultiNativeAsset;20use pallet_foreign_assets::{21	AssetId, AssetIdMapping, CurrencyId, ForeignAssetId, FreeForAll, NativeCurrency, TryAsForeign,22	XcmForeignAssetIdMapping,23};24use sp_runtime::traits::{Convert, MaybeEquivalence};25use sp_std::marker::PhantomData;26use staging_xcm::latest::{prelude::*, MultiAsset, MultiLocation};27use staging_xcm_builder::{ConvertedConcreteId, FungiblesAdapter, NoChecking};28use staging_xcm_executor::traits::{JustTry, TransactAsset};29use up_common::types::{AccountId, Balance};3031use super::{LocationToAccountId, RelayLocation};32use crate::{Balances, ForeignAssets, ParachainInfo, PolkadotXcm, Runtime};3334parameter_types! {35	pub CheckingAccount: AccountId = PolkadotXcm::check_account();36}3738pub struct AsInnerId<ConvertAssetId>(PhantomData<(AssetId, ConvertAssetId)>);39impl<ConvertAssetId: MaybeEquivalence<AssetId, AssetId>> MaybeEquivalence<MultiLocation, AssetId>40	for AsInnerId<ConvertAssetId>41{42	fn convert(id: &MultiLocation) -> Option<AssetId> {43		log::trace!(44			target: "xcm::AsInnerId::Convert",45			"AsInnerId {:?}",46			id47		);4849		let parent = MultiLocation::parent();50		let here = MultiLocation::here();51		let self_location = MultiLocation::new(1, X1(Parachain(ParachainInfo::get().into())));5253		if *id == parent {54			return ConvertAssetId::convert(&AssetId::NativeAssetId(NativeCurrency::Parent));55		}5657		if *id == here || *id == self_location {58			return ConvertAssetId::convert(&AssetId::NativeAssetId(NativeCurrency::Here));59		}6061		match XcmForeignAssetIdMapping::<Runtime>::get_currency_id(*id) {62			Some(AssetId::ForeignAssetId(foreign_asset_id)) => {63				ConvertAssetId::convert(&AssetId::ForeignAssetId(foreign_asset_id))64			}65			_ => None,66		}67	}6869	fn convert_back(asset_id: &AssetId) -> Option<MultiLocation> {70		log::trace!(71			target: "xcm::AsInnerId::Reverse",72			"AsInnerId",73		);7475		let parent_id =76			ConvertAssetId::convert(&AssetId::NativeAssetId(NativeCurrency::Parent)).unwrap();77		let here_id =78			ConvertAssetId::convert(&AssetId::NativeAssetId(NativeCurrency::Here)).unwrap();7980		if *asset_id == parent_id {81			return Some(MultiLocation::parent());82		}8384		if *asset_id == here_id {85			return Some(MultiLocation::new(86				1,87				X1(Parachain(ParachainInfo::get().into())),88			));89		}9091		let fid = <AssetId as TryAsForeign<AssetId, ForeignAssetId>>::try_as_foreign(*asset_id)?;92		XcmForeignAssetIdMapping::<Runtime>::get_multi_location(fid)93	}94}9596/// Means for transacting assets besides the native currency on this chain.97pub type FungiblesTransactor = FungiblesAdapter<98	// Use this fungibles implementation:99	ForeignAssets,100	// Use this currency when it is a fungible asset matching the given location or name:101	ConvertedConcreteId<AssetId, Balance, AsInnerId<JustTry>, JustTry>,102	// Convert an XCM MultiLocation into a local account id:103	LocationToAccountId,104	// Our chain's account ID type (we can't get away without mentioning it explicitly):105	AccountId,106	// No Checking for teleported assets since we disallow teleports at all.107	NoChecking,108	// The account to use for tracking teleports.109	CheckingAccount,110>;111112/// Means for transacting assets on this chain.113pub struct AssetTransactor;114impl TransactAsset for AssetTransactor {115	fn can_check_in(116		_origin: &MultiLocation,117		_what: &MultiAsset,118		_context: &XcmContext,119	) -> XcmResult {120		Err(XcmError::Unimplemented)121	}122123	fn check_in(_origin: &MultiLocation, _what: &MultiAsset, _context: &XcmContext) {}124125	fn can_check_out(126		_dest: &MultiLocation,127		_what: &MultiAsset,128		_context: &XcmContext,129	) -> XcmResult {130		Err(XcmError::Unimplemented)131	}132133	fn check_out(_dest: &MultiLocation, _what: &MultiAsset, _context: &XcmContext) {}134135	fn deposit_asset(136		what: &MultiAsset,137		who: &MultiLocation,138		context: Option<&XcmContext>,139	) -> XcmResult {140		FungiblesTransactor::deposit_asset(what, who, context)141	}142143	fn withdraw_asset(144		what: &MultiAsset,145		who: &MultiLocation,146		maybe_context: Option<&XcmContext>,147	) -> Result<staging_xcm_executor::Assets, XcmError> {148		FungiblesTransactor::withdraw_asset(what, who, maybe_context)149	}150151	fn internal_transfer_asset(152		what: &MultiAsset,153		from: &MultiLocation,154		to: &MultiLocation,155		context: &XcmContext,156	) -> Result<staging_xcm_executor::Assets, XcmError> {157		FungiblesTransactor::internal_transfer_asset(what, from, to, context)158	}159}160161pub type IsReserve = MultiNativeAsset<AbsoluteReserveProvider>;162163pub type Trader<T> = FreeForAll<164	pallet_configuration::WeightToFee<T, Balance>,165	RelayLocation,166	AccountId,167	Balances,168	(),169>;170171pub struct CurrencyIdConvert;172impl Convert<AssetId, Option<MultiLocation>> for CurrencyIdConvert {173	fn convert(id: AssetId) -> Option<MultiLocation> {174		match id {175			AssetId::NativeAssetId(NativeCurrency::Here) => Some(MultiLocation::new(176				1,177				X1(Parachain(ParachainInfo::get().into())),178			)),179			AssetId::NativeAssetId(NativeCurrency::Parent) => Some(MultiLocation::parent()),180			AssetId::ForeignAssetId(foreign_asset_id) => {181				XcmForeignAssetIdMapping::<Runtime>::get_multi_location(foreign_asset_id)182			}183		}184	}185}186187impl Convert<MultiLocation, Option<CurrencyId>> for CurrencyIdConvert {188	fn convert(location: MultiLocation) -> Option<CurrencyId> {189		if location == MultiLocation::here()190			|| location == MultiLocation::new(1, X1(Parachain(ParachainInfo::get().into())))191		{192			return Some(AssetId::NativeAssetId(NativeCurrency::Here));193		}194195		if location == MultiLocation::parent() {196			return Some(AssetId::NativeAssetId(NativeCurrency::Parent));197		}198199		if let Some(currency_id) = XcmForeignAssetIdMapping::<Runtime>::get_currency_id(location) {200			return Some(currency_id);201		}202203		None204	}205}