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style: Fix whitespace handling inside CSS variables

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As per w3c/csswg-drafts#881 and w3c/csswg-drafts#774.

Differential Revision: https://phabricator.services.mozilla.com/D116459
This commit is contained in:
Emilio Cobos Álvarez 2023-05-21 22:07:08 +02:00 • committed by Oriol Brufau
parent 832807f15f
commit b4546993b4
3 changed files with 20 additions and 61 deletions
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48
components/style/properties/declaration_block.rs
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@ -1076,15 +1076,9 @@ impl PropertyDeclarationBlock {
// AppendableValue::Css.
let mut v = CssString::new();
let value = match appendable_value {
AppendableValue::Css {
css,
with_variables,
} => {
AppendableValue::Css(css) => {
debug_assert!(!css.is_empty());
AppendableValue::Css {
css,
with_variables,
}
appendable_value
},
other => {
append_declaration_value(&mut v, other)?;
@ -1096,14 +1090,13 @@ impl PropertyDeclarationBlock {
continue;
}
AppendableValue::Css {
AppendableValue::Css({
// Safety: serialization only generates valid utf-8.
#[cfg(feature = "gecko")]
css: unsafe { v.as_str_unchecked() },
unsafe { v.as_str_unchecked() }
#[cfg(feature = "servo")]
css: &v,
with_variables: false,
}
&v
})
},
};
@ -1185,12 +1178,7 @@ where
DeclarationsForShorthand(ShorthandId, I),
/// A raw CSS string, coming for example from a property with CSS variables,
/// or when storing a serialized shorthand value before appending directly.
Css {
/// The raw CSS string.
css: &'a str,
/// Whether the original serialization contained variables or not.
with_variables: bool,
},
Css(&'a str),
}
/// Potentially appends whitespace after the first (property: value;) pair.
@ -1215,7 +1203,7 @@ where
I: Iterator<Item = &'a PropertyDeclaration>,
{
match appendable_value {
AppendableValue::Css { css, .. } => dest.write_str(css),
AppendableValue::Css(css) => dest.write_str(css),
AppendableValue::Declaration(decl) => decl.to_css(dest),
AppendableValue::DeclarationsForShorthand(shorthand, decls) => {
shorthand.longhands_to_css(decls, &mut CssWriter::new(dest))
@ -1238,25 +1226,7 @@ where
handle_first_serialization(dest, is_first_serialization)?;
property_name.to_css(&mut CssWriter::new(dest))?;
dest.write_char(':')?;
// for normal parsed values, add a space between key: and value
match appendable_value {
AppendableValue::Declaration(decl) => {
if !decl.value_is_unparsed() {
// For normal parsed values, add a space between key: and value.
dest.write_str(" ")?
}
},
AppendableValue::Css { with_variables, .. } => {
if !with_variables {
dest.write_str(" ")?
}
},
// Currently append_serialization is only called with a Css or
// a Declaration AppendableValue.
AppendableValue::DeclarationsForShorthand(..) => unreachable!(),
}
dest.write_str(": ")?;
append_declaration_value(dest, appendable_value)?;