mirror of
https://github.com/pezkuwichain/pezkuwi-subxt.git
synced 2026-04-26 16:57:58 +00:00
Vivek Pandya
bc53b9a03a
* Change copyright year to 2023 from 2022 * Fix incorrect update of copyright year * Remove years from copy right header * Fix remaining files * Fix typo in a header and remove update-copyright.sh
57 lines
1.7 KiB
Rust
57 lines
1.7 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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//! Provides functionality to embed a [`RuntimeVersion`](crate::RuntimeVersion) as custom section
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//! into a WASM file.
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use codec::Encode;
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use parity_wasm::elements::{deserialize_buffer, serialize, Module};
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#[derive(Clone, Copy, Eq, PartialEq, Debug, thiserror::Error)]
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pub enum Error {
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#[error("Deserializing wasm failed")]
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Deserialize,
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#[error("Serializing wasm failed")]
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Serialize,
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}
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/// Embed the given `version` to the given `wasm` blob.
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///
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/// If there was already a runtime version embedded, this will be overwritten.
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///
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/// Returns the new WASM blob.
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pub fn embed_runtime_version(
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wasm: &[u8],
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mut version: crate::RuntimeVersion,
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) -> Result<Vec<u8>, Error> {
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let mut module: Module = deserialize_buffer(wasm).map_err(|_| Error::Deserialize)?;
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let apis = version
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.apis
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.iter()
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.map(Encode::encode)
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.flat_map(|v| v.into_iter())
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.collect::<Vec<u8>>();
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module.set_custom_section("runtime_apis", apis);
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version.apis.to_mut().clear();
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module.set_custom_section("runtime_version", version.encode());
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serialize(module).map_err(|_| Error::Serialize)
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}
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