mirror of
https://github.com/pezkuwichain/pezkuwi-subxt.git
synced 2026-04-27 05:47:58 +00:00
Benjamin Kampmann
82 lines
2.3 KiB
Rust
82 lines
2.3 KiB
Rust
// This file is part of Substrate.
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// Copyright (C) 2017-2020 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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//! Lowest-abstraction level for the Substrate runtime: just exports useful primitives from std
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//! or client/alloc to be used with any code that depends on the runtime.
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#![cfg_attr(not(feature = "std"), no_std)]
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#![cfg_attr(feature = "std",
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doc = "Substrate runtime standard library as compiled when linked with Rust's standard library.")]
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#![cfg_attr(not(feature = "std"),
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doc = "Substrate's runtime standard library as compiled without Rust's standard library.")]
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#[macro_export]
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macro_rules! map {
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($( $name:expr => $value:expr ),*) => (
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vec![ $( ( $name, $value ) ),* ].into_iter().collect()
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)
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}
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/// Feature gate some code that should only be run when `std` feature is enabled.
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///
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/// # Example
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///
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/// ```
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/// use sp_std::if_std;
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///
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/// if_std! {
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/// // This code is only being compiled and executed when the `std` feature is enabled.
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/// println!("Hello native world");
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/// }
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/// ```
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#[cfg(feature = "std")]
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#[macro_export]
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macro_rules! if_std {
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( $( $code:tt )* ) => {
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$( $code )*
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}
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}
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#[cfg(not(feature = "std"))]
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#[macro_export]
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macro_rules! if_std {
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( $( $code:tt )* ) => {}
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}
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#[cfg(feature = "std")]
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include!("../with_std.rs");
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#[cfg(not(feature = "std"))]
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include!("../without_std.rs");
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/// Prelude of common useful imports.
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///
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/// This should include only things which are in the normal std prelude.
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pub mod prelude {
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pub use crate::vec::Vec;
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pub use crate::boxed::Box;
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pub use crate::cmp::{Eq, PartialEq, Reverse};
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pub use crate::clone::Clone;
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// Re-export `vec!` macro here, but not in `std` mode, since
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// std's prelude already brings `vec!` into the scope.
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#[cfg(not(feature = "std"))]
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pub use crate::vec;
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}
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