mirror of
https://github.com/pezkuwichain/pezkuwi-subxt.git
synced 2026-08-07 15:55:48 +00:00
Squirrel
bc2e5e1fe2
First in a series of PRs that reduces our use of sp-std with a view to deprecating it. This is just looking at /substrate and moving some of the references from `sp-std` to `core`. These particular changes should be uncontroversial. Where macros are used `::core` should be used to remove any ambiguity. part of https://github.com/paritytech/polkadot-sdk/issues/2101
45 lines
1.4 KiB
Rust
45 lines
1.4 KiB
Rust
// This file is part of Substrate.
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// 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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mod mmr;
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pub mod storage;
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use sp_mmr_primitives::{mmr_lib, DataOrHash, FullLeaf};
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use sp_runtime::traits;
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pub use self::mmr::{verify_leaves_proof, Mmr};
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/// Node type for runtime `T`.
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pub type NodeOf<T, I, L> = Node<<T as crate::Config<I>>::Hashing, L>;
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/// A node stored in the MMR.
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pub type Node<H, L> = DataOrHash<H, L>;
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/// Default Merging & Hashing behavior for MMR.
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pub struct Hasher<H, L>(core::marker::PhantomData<(H, L)>);
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impl<H: traits::Hash, L: FullLeaf> mmr_lib::Merge for Hasher<H, L> {
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type Item = Node<H, L>;
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fn merge(left: &Self::Item, right: &Self::Item) -> mmr_lib::Result<Self::Item> {
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let mut concat = left.hash().as_ref().to_vec();
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concat.extend_from_slice(right.hash().as_ref());
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Ok(Node::Hash(<H as traits::Hash>::hash(&concat)))
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}
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}
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