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Make it possible to build the style_traits crate with a stable compiler.

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Testing this on CI to make sure we don’t regress it is blocked on #11806
This commit is contained in:
Simon Sapin 2016-06-21 13:55:50 +02:00
parent b9b289c4be
commit ea73c8efac
20 changed files with 145 additions and 89 deletions
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52
components/style_traits/values.rs
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@ -5,12 +5,58 @@
#[macro_export]
macro_rules! define_css_keyword_enum {
($name: ident: $( $css: expr => $variant: ident ),+,) => {
define_css_keyword_enum!($name: $( $css => $variant ),+);
__define_css_keyword_enum__add_serde!($name [ $( $css => $variant ),+ ]);
};
($name: ident: $( $css: expr => $variant: ident ),+) => {
__define_css_keyword_enum__add_serde!($name [ $( $css => $variant ),+ ]);
};
}
#[cfg(feature = "serde-serialization")]
#[macro_export]
macro_rules! __define_css_keyword_enum__add_serde {
($name: ident [ $( $css: expr => $variant: ident ),+ ]) => {
__define_css_keyword_enum__add_heapsize! {
$name [ Deserialize, Serialize ] [ $( $css => $variant ),+ ]
}
};
}
#[cfg(not(feature = "serde-serialization"))]
#[macro_export]
macro_rules! __define_css_keyword_enum__add_serde {
($name: ident [ $( $css: expr => $variant: ident ),+ ]) => {
__define_css_keyword_enum__add_heapsize! {
$name [] [ $( $css => $variant ),+ ]
}
};
}
#[cfg(feature = "heap_size")]
#[macro_export]
macro_rules! __define_css_keyword_enum__add_heapsize {
($name: ident [ $( $derived_trait: ident),* ] [ $( $css: expr => $variant: ident ),+ ]) => {
__define_css_keyword_enum__actual! {
$name [ $( $derived_trait, )* HeapSizeOf ] [ $( $css => $variant ),+ ]
}
};
}
#[cfg(not(feature = "heap_size"))]
#[macro_export]
macro_rules! __define_css_keyword_enum__add_heapsize {
($name: ident [ $( $derived_trait: ident),* ] [ $( $css: expr => $variant: ident ),+ ]) => {
__define_css_keyword_enum__actual! {
$name [ $( $derived_trait ),* ] [ $( $css => $variant ),+ ]
}
};
}
#[macro_export]
macro_rules! __define_css_keyword_enum__actual {
($name: ident [ $( $derived_trait: ident),* ] [ $( $css: expr => $variant: ident ),+ ]) => {
#[allow(non_camel_case_types)]
#[derive(Clone, Eq, PartialEq, Copy, Hash, RustcEncodable, Debug, HeapSizeOf)]
#[derive(Deserialize, Serialize)]
#[derive(Clone, Eq, PartialEq, Copy, Hash, RustcEncodable, Debug $(, $derived_trait )* )]
pub enum $name {
$( $variant ),+
}