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style: Only a single name allowed in @container rule

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Differential Revision: https://phabricator.services.mozilla.com/D158775
This commit is contained in:
Ziran Sun 2022-11-02 14:15:35 +00:00 • committed by Martin Robinson
parent 2c1799a8df
commit aba0a4bce0
2 changed files with 31 additions and 16 deletions
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6
components/style/stylesheets/container_rule.rs
View file

@ -157,12 +157,8 @@ impl ContainerCondition {
context: &ParserContext,
input: &mut Parser<'a, '_>,
) -> Result<Self, ParseError<'a>> {
use crate::parser::Parse;
// FIXME: This is a bit ambiguous:
// https://github.com/w3c/csswg-drafts/issues/7203
let name = input
.try_parse(|input| ContainerName::parse(context, input))
.try_parse(|input| ContainerName::parse_for_query(context, input))
.ok()
.unwrap_or_else(ContainerName::none);
let condition = QueryCondition::parse(context, input, FeatureType::Container)?;

41
components/style/values/specified/box.rs
View file

@ -1539,17 +1539,15 @@ impl ContainerName {
pub fn is_none(&self) -> bool {
self.0.is_empty()
}
}
impl Parse for ContainerName {
fn parse<'i, 't>(
_: &ParserContext,
input: &mut Parser<'i, 't>,
fn parse_internal<'i>(
input: &mut Parser<'i, '_>,
for_query: bool,
) -> Result<Self, ParseError<'i>> {
let mut idents = vec![];
let location = input.current_source_location();
let first = input.expect_ident()?;
if first.eq_ignore_ascii_case("none") {
if !for_query && first.eq_ignore_ascii_case("none") {
return Ok(Self::none());
}
const DISALLOWED_CONTAINER_NAMES: &'static [&'static str] =
@ -1559,14 +1557,35 @@ impl Parse for ContainerName {
first,
DISALLOWED_CONTAINER_NAMES,
)?);
while let Ok(name) = input.try_parse(|input| {
let ident = input.expect_ident()?;
CustomIdent::from_ident(location, &ident, DISALLOWED_CONTAINER_NAMES)
}) {
idents.push(name);
if !for_query {
while let Ok(name) = input.try_parse(|input| {
let ident = input.expect_ident()?;
CustomIdent::from_ident(location, &ident, DISALLOWED_CONTAINER_NAMES)
}) {
idents.push(name);
}
}
Ok(ContainerName(idents.into()))
}
/// https://github.com/w3c/csswg-drafts/issues/7203
/// Only a single name allowed in @container rule.
/// Disallow none for container-name in @container rule.
pub fn parse_for_query<'i, 't>(
_: &ParserContext,
input: &mut Parser<'i, 't>,
) -> Result<Self, ParseError<'i>> {
Self::parse_internal(input, /* for_query = */ true)
}
}
impl Parse for ContainerName {
fn parse<'i, 't>(
_: &ParserContext,
input: &mut Parser<'i, 't>,
) -> Result<Self, ParseError<'i>> {
Self::parse_internal(input, /* for_query = */ false)
}
}
/// A specified value for the `perspective` property.