mirror of
https://github.com/pezkuwichain/pezkuwi-subxt.git
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Weiliang Li
6da9f59d72
* primitives/sr-std -> primitives/std * fix * fix conflict * rstd -> sp-std * git mv * fix review * fix merge
81 lines
2.4 KiB
Rust
81 lines
2.4 KiB
Rust
// Copyright 2017-2019 Parity Technologies (UK) Ltd.
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// This file is part of Substrate.
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// Substrate 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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// Substrate 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 Substrate. If not, see <http://www.gnu.org/licenses/>.
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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(not(feature = "std"), feature(core_intrinsics))]
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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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