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Merge pull request #555 from stjepang/optimize-cargo-check

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Macro optimization to reduce compilation times
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Yoshua Wuyts 2019-11-19 05:15:58 +01:00 committed by GitHub
commit c6622475b2
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5
src/utils.rs
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@ -221,6 +221,11 @@ macro_rules! extension_trait {
$(#[cfg(feature = "docs")] $imp)*
};
// Optimization: expand `$head` eagerly before starting a new method definition.
(@ext ($($head:tt)*) #[doc = $d:literal] $($tail:tt)*) => {
$($head)* extension_trait!(@ext (#[doc = $d]) $($tail)*);
};
// Parse the return type in an extension method.
(@doc ($($head:tt)*) -> impl Future<Output = $out:ty> $(+ $lt:lifetime)? [$f:ty] $($tail:tt)*) => {
extension_trait!(@doc ($($head)* -> owned::ImplFuture<$out>) $($tail)*);