mirror of
https://github.com/pezkuwichain/pezkuwi-subxt.git
synced 2026-05-30 22:11:02 +00:00
Francisco Aguirre
8428f678fe
# Note for reviewer
Most changes are just syntax changes necessary for the new version.
Most important files should be the ones under the `xcm` folder.
# Description
Added XCMv4.
## Removed `Multi` prefix
The following types have been renamed:
- MultiLocation -> Location
- MultiAsset -> Asset
- MultiAssets -> Assets
- InteriorMultiLocation -> InteriorLocation
- MultiAssetFilter -> AssetFilter
- VersionedMultiAsset -> VersionedAsset
- WildMultiAsset -> WildAsset
- VersionedMultiLocation -> VersionedLocation
In order to fix a name conflict, the `Assets` in `xcm-executor` were
renamed to `HoldingAssets`, as they represent assets in holding.
## Removed `Abstract` asset id
It was not being used anywhere and this simplifies the code.
Now assets are just constructed as follows:
```rust
let asset: Asset = (AssetId(Location::new(1, Here)), 100u128).into();
```
No need for specifying `Concrete` anymore.
## Outcome is now a named fields struct
Instead of
```rust
pub enum Outcome {
Complete(Weight),
Incomplete(Weight, Error),
Error(Error),
}
```
we now have
```rust
pub enum Outcome {
Complete { used: Weight },
Incomplete { used: Weight, error: Error },
Error { error: Error },
}
```
## Added Reanchorable trait
Now both locations and assets implement this trait, making it easier to
reanchor both.
## New syntax for building locations and junctions
Now junctions are built using the following methods:
```rust
let location = Location {
parents: 1,
interior: [Parachain(1000), PalletInstance(50), GeneralIndex(1984)].into()
};
```
or
```rust
let location = Location::new(1, [Parachain(1000), PalletInstance(50), GeneralIndex(1984)]);
```
And they are matched like so:
```rust
match location.unpack() {
(1, [Parachain(id)]) => ...
(0, Here) => ...,
(1, [_]) => ...,
}
```
This syntax is mandatory in v4, and has been also implemented for v2 and
v3 for easier migration.
This was needed to make all sizes smaller.
# TODO
- [x] Scaffold v4
- [x] Port github.com/paritytech/polkadot/pull/7236
- [x] Remove `Multi` prefix
- [x] Remove `Abstract` asset id
---------
Co-authored-by: command-bot <>
Co-authored-by: Keith Yeung <kungfukeith11@gmail.com>
47 lines
1.7 KiB
Rust
47 lines
1.7 KiB
Rust
// Copyright (C) Parity Technologies (UK) Ltd.
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// SPDX-License-Identifier: Apache-2.0
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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//! Runtime API definition for fungibles.
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use codec::{Codec, Decode, Encode};
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use sp_runtime::RuntimeDebug;
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#[cfg(feature = "std")]
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use {sp_std::vec::Vec, xcm::latest::Asset};
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/// The possible errors that can happen querying the storage of assets.
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#[derive(Eq, PartialEq, Encode, Decode, RuntimeDebug, scale_info::TypeInfo)]
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pub enum FungiblesAccessError {
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/// `Location` to `AssetId`/`ClassId` conversion failed.
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AssetIdConversionFailed,
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/// `u128` amount to currency `Balance` conversion failed.
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AmountToBalanceConversionFailed,
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}
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sp_api::decl_runtime_apis! {
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/// The API for querying account's balances from runtime.
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#[api_version(2)]
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pub trait FungiblesApi<AccountId>
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where
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AccountId: Codec,
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{
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/// Returns the list of all [`Asset`] that an `AccountId` has.
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#[changed_in(2)]
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fn query_account_balances(account: AccountId) -> Result<Vec<Asset>, FungiblesAccessError>;
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/// Returns the list of all [`Asset`] that an `AccountId` has.
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fn query_account_balances(account: AccountId) -> Result<xcm::VersionedAssets, FungiblesAccessError>;
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}
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}
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