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feat: Make the utils module no_std

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k-nasa 2020-01-16 10:33:00 +09:00
parent 51b84a7620
commit 3d32fd81f4
1 changed files with 25 additions and 2 deletions
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27
src/utils.rs
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@ -1,3 +1,9 @@
#[cfg(feature = "no-std")]
extern crate alloc;
#[cfg(feature = "no-std")]
use alloc::string::String;
/// Calls a function and aborts if it panics. /// Calls a function and aborts if it panics.
/// ///
/// This is useful in unsafe code where we can't recover from panics. /// This is useful in unsafe code where we can't recover from panics.
@ -104,6 +110,7 @@ macro_rules! cfg_unstable_default {
/// Declares Unix-specific items. /// Declares Unix-specific items.
#[doc(hidden)] #[doc(hidden)]
#[allow(unused_macros)]
macro_rules! cfg_unix { macro_rules! cfg_unix {
($($item:item)*) => { ($($item:item)*) => {
$( $(
@ -116,6 +123,7 @@ macro_rules! cfg_unix {
/// Declares Windows-specific items. /// Declares Windows-specific items.
#[doc(hidden)] #[doc(hidden)]
#[allow(unused_macros)]
macro_rules! cfg_windows { macro_rules! cfg_windows {
($($item:item)*) => { ($($item:item)*) => {
$( $(
@ -128,6 +136,7 @@ macro_rules! cfg_windows {
/// Declares items when the "docs" feature is enabled. /// Declares items when the "docs" feature is enabled.
#[doc(hidden)] #[doc(hidden)]
#[allow(unused_macros)]
macro_rules! cfg_docs { macro_rules! cfg_docs {
($($item:item)*) => { ($($item:item)*) => {
$( $(
@ -139,6 +148,7 @@ macro_rules! cfg_docs {
/// Declares items when the "docs" feature is disabled. /// Declares items when the "docs" feature is disabled.
#[doc(hidden)] #[doc(hidden)]
#[allow(unused_macros)]
macro_rules! cfg_not_docs { macro_rules! cfg_not_docs {
($($item:item)*) => { ($($item:item)*) => {
$( $(
@ -160,6 +170,18 @@ macro_rules! cfg_std {
} }
} }
/// Declares no-std items.
#[allow(unused_macros)]
#[doc(hidden)]
macro_rules! cfg_no_std {
($($item:item)*) => {
$(
#[cfg(feature = "no-std")]
$item
)*
}
}
/// Declares default items. /// Declares default items.
#[allow(unused_macros)] #[allow(unused_macros)]
#[doc(hidden)] #[doc(hidden)]
@ -180,6 +202,7 @@ macro_rules! cfg_default {
/// ///
/// Inside invocations of this macro, we write a definitions that looks similar to the final /// Inside invocations of this macro, we write a definitions that looks similar to the final
/// rendered docs, and the macro then generates all the boilerplate for us. /// rendered docs, and the macro then generates all the boilerplate for us.
#[allow(unused_macros)]
#[doc(hidden)] #[doc(hidden)]
macro_rules! extension_trait { macro_rules! extension_trait {
( (
@ -204,14 +227,14 @@ macro_rules! extension_trait {
#[allow(dead_code)] #[allow(dead_code)]
mod owned { mod owned {
#[doc(hidden)] #[doc(hidden)]
pub struct ImplFuture<T>(std::marker::PhantomData<T>); pub struct ImplFuture<T>(core::marker::PhantomData<T>);
} }
// A fake `impl Future` type that borrows its environment. // A fake `impl Future` type that borrows its environment.
#[allow(dead_code)] #[allow(dead_code)]
mod borrowed { mod borrowed {
#[doc(hidden)] #[doc(hidden)]
pub struct ImplFuture<'a, T>(std::marker::PhantomData<&'a T>); pub struct ImplFuture<'a, T>(core::marker::PhantomData<&'a T>);
} }
// Render a fake trait combining the bodies of the base trait and the extension trait. // Render a fake trait combining the bodies of the base trait and the extension trait.