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style: Add support for property value aliases.
For keyword-typed properties with aliases but no extra_specified values, the storage of the specified and computed values could be the same, since value aliases are resolved at parse time. But to prevent computed_value::T::parse from recognizing these aliases, we keep the specified and computed value types distinct.
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3 changed files with 103 additions and 13 deletions
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@ -82,20 +82,43 @@ impl_to_css_for_predefined_type!(::cssparser::UnicodeRange);
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#[macro_export]
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macro_rules! define_css_keyword_enum {
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($name: ident: values { $( $css: expr => $variant: ident),+, }
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aliases { $( $alias: expr => $alias_variant: ident ),+, }) => {
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__define_css_keyword_enum__add_optional_traits!($name [ $( $css => $variant ),+ ]
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[ $( $alias => $alias_variant ),+ ]);
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};
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($name: ident: values { $( $css: expr => $variant: ident),+, }
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aliases { $( $alias: expr => $alias_variant: ident ),* }) => {
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__define_css_keyword_enum__add_optional_traits!($name [ $( $css => $variant ),+ ]
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[ $( $alias => $alias_variant ),* ]);
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};
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($name: ident: values { $( $css: expr => $variant: ident),+ }
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aliases { $( $alias: expr => $alias_variant: ident ),+, }) => {
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__define_css_keyword_enum__add_optional_traits!($name [ $( $css => $variant ),+ ]
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[ $( $alias => $alias_variant ),+ ]);
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};
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($name: ident: values { $( $css: expr => $variant: ident),+ }
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aliases { $( $alias: expr => $alias_variant: ident ),* }) => {
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__define_css_keyword_enum__add_optional_traits!($name [ $( $css => $variant ),+ ]
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[ $( $alias => $alias_variant ),* ]);
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};
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($name: ident: $( $css: expr => $variant: ident ),+,) => {
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__define_css_keyword_enum__add_optional_traits!($name [ $( $css => $variant ),+ ]);
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__define_css_keyword_enum__add_optional_traits!($name [ $( $css => $variant ),+ ] []);
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};
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($name: ident: $( $css: expr => $variant: ident ),+) => {
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__define_css_keyword_enum__add_optional_traits!($name [ $( $css => $variant ),+ ]);
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__define_css_keyword_enum__add_optional_traits!($name [ $( $css => $variant ),+ ] []);
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};
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}
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#[cfg(feature = "servo")]
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#[macro_export]
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macro_rules! __define_css_keyword_enum__add_optional_traits {
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($name: ident [ $( $css: expr => $variant: ident ),+ ]) => {
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($name: ident [ $( $css: expr => $variant: ident ),+ ]
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[ $( $alias: expr => $alias_variant: ident),* ]) => {
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__define_css_keyword_enum__actual! {
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$name [ Deserialize, Serialize, HeapSizeOf ] [ $( $css => $variant ),+ ]
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$name [ Deserialize, Serialize, HeapSizeOf ]
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[ $( $css => $variant ),+ ]
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[ $( $alias => $alias_variant ),* ]
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}
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};
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}
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@ -103,16 +126,18 @@ macro_rules! __define_css_keyword_enum__add_optional_traits {
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#[cfg(not(feature = "servo"))]
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#[macro_export]
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macro_rules! __define_css_keyword_enum__add_optional_traits {
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($name: ident [ $( $css: expr => $variant: ident ),+ ]) => {
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($name: ident [ $( $css: expr => $variant: ident ),+ ] [ $( $alias: expr => $alias_variant: ident),* ]) => {
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__define_css_keyword_enum__actual! {
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$name [] [ $( $css => $variant ),+ ]
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$name [] [ $( $css => $variant ),+ ] [ $( $alias => $alias_variant ),* ]
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}
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};
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}
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#[macro_export]
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macro_rules! __define_css_keyword_enum__actual {
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($name: ident [ $( $derived_trait: ident),* ] [ $( $css: expr => $variant: ident ),+ ]) => {
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($name: ident [ $( $derived_trait: ident),* ]
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[ $( $css: expr => $variant: ident ),+ ]
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[ $( $alias: expr => $alias_variant: ident ),* ]) => {
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#[allow(non_camel_case_types, missing_docs)]
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#[derive(Clone, Copy, Debug, Eq, Hash, PartialEq $(, $derived_trait )* )]
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pub enum $name {
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@ -130,6 +155,7 @@ macro_rules! __define_css_keyword_enum__actual {
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pub fn from_ident(ident: &str) -> Result<$name, ()> {
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match_ignore_ascii_case! { ident,
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$( $css => Ok($name::$variant), )+
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$( $alias => Ok($name::$alias_variant), )*
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_ => Err(())
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}
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}
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