mirror of
https://github.com/pezkuwichain/pezkuwi-subxt.git
synced 2026-05-30 18:41:03 +00:00
Hernando Castano
88 lines
3.2 KiB
Rust
88 lines
3.2 KiB
Rust
// Copyright 2019-2021 Parity Technologies (UK) Ltd.
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// This file is part of Parity Bridges Common.
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// Parity Bridges Common is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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// Parity Bridges Common is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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// You should have received a copy of the GNU General Public License
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// along with Parity Bridges Common. If not, see <http://www.gnu.org/licenses/>.
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use frame_support::Parameter;
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use num_traits::AsPrimitive;
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use sp_runtime::traits::{
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AtLeast32BitUnsigned, Hash as HashT, Header as HeaderT, MaybeDisplay, MaybeMallocSizeOf, MaybeSerializeDeserialize,
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Member, SimpleBitOps,
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};
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use sp_std::str::FromStr;
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/// Minimal Substrate-based chain representation that may be used from no_std environment.
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pub trait Chain: Send + Sync + 'static {
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/// A type that fulfills the abstract idea of what a Substrate block number is.
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// Constraits come from the associated Number type of `sp_runtime::traits::Header`
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// See here for more info:
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// https://crates.parity.io/sp_runtime/traits/trait.Header.html#associatedtype.Number
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//
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// Note that the `AsPrimitive<usize>` trait is required by the GRANDPA justification
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// verifier, and is not usually part of a Substrate Header's Number type.
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type BlockNumber: Parameter
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+ Member
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+ MaybeSerializeDeserialize
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+ sp_std::hash::Hash
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+ Copy
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+ Default
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+ MaybeDisplay
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+ AtLeast32BitUnsigned
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+ FromStr
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+ MaybeMallocSizeOf
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+ AsPrimitive<usize>
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+ Default;
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/// A type that fulfills the abstract idea of what a Substrate hash is.
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// Constraits come from the associated Hash type of `sp_runtime::traits::Header`
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// See here for more info:
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// https://crates.parity.io/sp_runtime/traits/trait.Header.html#associatedtype.Hash
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type Hash: Parameter
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+ Member
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+ MaybeSerializeDeserialize
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+ sp_std::hash::Hash
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+ Ord
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+ Copy
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+ MaybeDisplay
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+ Default
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+ SimpleBitOps
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+ AsRef<[u8]>
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+ AsMut<[u8]>
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+ MaybeMallocSizeOf;
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/// A type that fulfills the abstract idea of what a Substrate hasher (a type
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/// that produces hashes) is.
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// Constraits come from the associated Hashing type of `sp_runtime::traits::Header`
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// See here for more info:
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// https://crates.parity.io/sp_runtime/traits/trait.Header.html#associatedtype.Hashing
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type Hasher: HashT<Output = Self::Hash>;
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/// A type that fulfills the abstract idea of what a Substrate header is.
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// See here for more info:
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// https://crates.parity.io/sp_runtime/traits/trait.Header.html
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type Header: Parameter + HeaderT<Number = Self::BlockNumber, Hash = Self::Hash> + MaybeSerializeDeserialize;
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}
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/// Block number used by the chain.
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pub type BlockNumberOf<C> = <C as Chain>::BlockNumber;
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/// Hash type used by the chain.
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pub type HashOf<C> = <C as Chain>::Hash;
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/// Hasher type used by the chain.
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pub type HasherOf<C> = <C as Chain>::Hasher;
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/// Header type used by the chain.
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pub type HeaderOf<C> = <C as Chain>::Header;
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