git.delta.rocks / unique-network / refs/commits / 7489c8a67628

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.clone() == parent_id {81			return Some(MultiLocation::parent());82		}8384		if asset_id.clone() == here_id {85			return Some(MultiLocation::new(86				1,87				X1(Parachain(ParachainInfo::get().into())),88			));89		}9091		let fid =92			<AssetId as TryAsForeign<AssetId, ForeignAssetId>>::try_as_foreign(asset_id.clone())?;93		XcmForeignAssetIdMapping::<Runtime>::get_multi_location(fid)94	}95}9697/// Means for transacting assets besides the native currency on this chain.98pub type FungiblesTransactor = FungiblesAdapter<99	// Use this fungibles implementation:100	ForeignAssets,101	// Use this currency when it is a fungible asset matching the given location or name:102	ConvertedConcreteId<AssetId, Balance, AsInnerId<JustTry>, JustTry>,103	// Convert an XCM MultiLocation into a local account id:104	LocationToAccountId,105	// Our chain's account ID type (we can't get away without mentioning it explicitly):106	AccountId,107	// No Checking for teleported assets since we disallow teleports at all.108	NoChecking,109	// The account to use for tracking teleports.110	CheckingAccount,111>;112113/// Means for transacting assets on this chain.114pub struct AssetTransactor;115impl TransactAsset for AssetTransactor {116	fn can_check_in(117		_origin: &MultiLocation,118		_what: &MultiAsset,119		_context: &XcmContext,120	) -> XcmResult {121		Err(XcmError::Unimplemented)122	}123124	fn check_in(_origin: &MultiLocation, _what: &MultiAsset, _context: &XcmContext) {}125126	fn can_check_out(127		_dest: &MultiLocation,128		_what: &MultiAsset,129		_context: &XcmContext,130	) -> XcmResult {131		Err(XcmError::Unimplemented)132	}133134	fn check_out(_dest: &MultiLocation, _what: &MultiAsset, _context: &XcmContext) {}135136	fn deposit_asset(what: &MultiAsset, who: &MultiLocation, context: &XcmContext) -> XcmResult {137		FungiblesTransactor::deposit_asset(what, who, context)138	}139140	fn withdraw_asset(141		what: &MultiAsset,142		who: &MultiLocation,143		maybe_context: Option<&XcmContext>,144	) -> Result<staging_xcm_executor::Assets, XcmError> {145		FungiblesTransactor::withdraw_asset(what, who, maybe_context)146	}147148	fn internal_transfer_asset(149		what: &MultiAsset,150		from: &MultiLocation,151		to: &MultiLocation,152		context: &XcmContext,153	) -> Result<staging_xcm_executor::Assets, XcmError> {154		FungiblesTransactor::internal_transfer_asset(what, from, to, context)155	}156}157158pub type IsReserve = MultiNativeAsset<AbsoluteReserveProvider>;159160pub type Trader<T> = FreeForAll<161	pallet_configuration::WeightToFee<T, Balance>,162	RelayLocation,163	AccountId,164	Balances,165	(),166>;167168pub struct CurrencyIdConvert;169impl Convert<AssetId, Option<MultiLocation>> for CurrencyIdConvert {170	fn convert(id: AssetId) -> Option<MultiLocation> {171		match id {172			AssetId::NativeAssetId(NativeCurrency::Here) => Some(MultiLocation::new(173				1,174				X1(Parachain(ParachainInfo::get().into())),175			)),176			AssetId::NativeAssetId(NativeCurrency::Parent) => Some(MultiLocation::parent()),177			AssetId::ForeignAssetId(foreign_asset_id) => {178				XcmForeignAssetIdMapping::<Runtime>::get_multi_location(foreign_asset_id)179			}180		}181	}182}183184impl Convert<MultiLocation, Option<CurrencyId>> for CurrencyIdConvert {185	fn convert(location: MultiLocation) -> Option<CurrencyId> {186		if location == MultiLocation::here()187			|| location == MultiLocation::new(1, X1(Parachain(ParachainInfo::get().into())))188		{189			return Some(AssetId::NativeAssetId(NativeCurrency::Here));190		}191192		if location == MultiLocation::parent() {193			return Some(AssetId::NativeAssetId(NativeCurrency::Parent));194		}195196		if let Some(currency_id) = XcmForeignAssetIdMapping::<Runtime>::get_currency_id(location) {197			return Some(currency_id);198		}199200		None201	}202}