mirror of
https://github.com/pezkuwichain/pezkuwi-subxt.git
synced 2026-04-30 13:07:56 +00:00
honeywest
6ec0f64259
* fix clippy replace clone with copy * fix clippy warning pattern * fix clippy warning replace into_iter with iter * replace match with if let * replace =0 with is_empty * replace or with or_else * replace vec! with Vec::new
65 lines
2.2 KiB
Rust
65 lines
2.2 KiB
Rust
// This file is part of Substrate.
|
|
|
|
// Copyright (C) 2020-2021 Parity Technologies (UK) Ltd.
|
|
// SPDX-License-Identifier: Apache-2.0
|
|
|
|
// Licensed under the Apache License, Version 2.0 (the "License");
|
|
// you may not use this file except in compliance with the License.
|
|
// You may obtain a copy of the License at
|
|
//
|
|
// http://www.apache.org/licenses/LICENSE-2.0
|
|
//
|
|
// Unless required by applicable law or agreed to in writing, software
|
|
// distributed under the License is distributed on an "AS IS" BASIS,
|
|
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
// See the License for the specific language governing permissions and
|
|
// limitations under the License.
|
|
|
|
//! Implementation of macros related to pallet versioning.
|
|
|
|
use proc_macro2::{TokenStream, Span};
|
|
use syn::{Result, Error};
|
|
use std::{env, str::FromStr};
|
|
use frame_support_procedural_tools::generate_crate_access_2018;
|
|
|
|
/// Get the version from the given version environment variable.
|
|
///
|
|
/// The version is parsed into the requested destination type.
|
|
fn get_version<T: FromStr>(version_env: &str) -> std::result::Result<T, ()> {
|
|
let version = env::var(version_env)
|
|
.unwrap_or_else(|_| panic!("`{}` is always set by cargo; qed", version_env));
|
|
|
|
T::from_str(&version).map_err(drop)
|
|
}
|
|
|
|
/// Create an error that will be shown by rustc at the call site of the macro.
|
|
fn create_error(message: &str) -> Error {
|
|
Error::new(Span::call_site(), message)
|
|
}
|
|
|
|
/// Implementation of the `crate_to_pallet_version!` macro.
|
|
pub fn crate_to_pallet_version(input: proc_macro::TokenStream) -> Result<TokenStream> {
|
|
if !input.is_empty() {
|
|
return Err(create_error("No arguments expected!"))
|
|
}
|
|
|
|
let major_version = get_version::<u16>("CARGO_PKG_VERSION_MAJOR")
|
|
.map_err(|_| create_error("Major version needs to fit into `u16`"))?;
|
|
|
|
let minor_version = get_version::<u8>("CARGO_PKG_VERSION_MINOR")
|
|
.map_err(|_| create_error("Minor version needs to fit into `u8`"))?;
|
|
|
|
let patch_version = get_version::<u8>("CARGO_PKG_VERSION_PATCH")
|
|
.map_err(|_| create_error("Patch version needs to fit into `u8`"))?;
|
|
|
|
let crate_ = generate_crate_access_2018("frame-support")?;
|
|
|
|
Ok(quote::quote! {
|
|
#crate_::traits::PalletVersion {
|
|
major: #major_version,
|
|
minor: #minor_version,
|
|
patch: #patch_version,
|
|
}
|
|
})
|
|
}
|