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style: make the try_match_ident_ignore_ascii_case macro actually return the error.

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This allows it to be used as an expression, which I'd like to do very soon.
This commit is contained in:
Emilio Cobos Álvarez 2018-01-24 16:11:35 +01:00
parent 2024ef56b0
commit e978645a52
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2 changed files with 10 additions and 11 deletions
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15
components/style/macros.rs
View file

@ -53,19 +53,16 @@ macro_rules! trivial_to_computed_value {
/// FIXME(emilio): The fact that `UnexpectedIdent` is a `SelectorParseError`
/// doesn't make a lot of sense to me.
macro_rules! try_match_ident_ignore_ascii_case {
($input:expr, $( $match_body:tt )*) => {
($input:expr, $( $match_body:tt )*) => {{
let location = $input.current_source_location();
let ident = $input.expect_ident_cloned()?;
(match_ignore_ascii_case! { &ident,
match_ignore_ascii_case! { &ident,
$( $match_body )*
_ => Err(()),
})
.map_err(|()| {
location.new_custom_error(
_ => return Err(location.new_custom_error(
::selectors::parser::SelectorParseErrorKind::UnexpectedIdent(ident.clone())
)
})
}
))
}
}}
}
macro_rules! define_numbered_css_keyword_enum {

6
components/style/values/specified/text.rs
View file

@ -293,8 +293,9 @@ impl Parse for TextDecorationLine {
}
loop {
let result: Result<_, ParseError> = input.try(|input| {
try_match_ident_ignore_ascii_case! { input,
let result = input.try(|input| {
let ident = input.expect_ident().map_err(|_| ())?;
match_ignore_ascii_case! { ident,
"underline" => {
if result.contains(TextDecorationLine::UNDERLINE) {
Err(())
@ -327,6 +328,7 @@ impl Parse for TextDecorationLine {
Ok(())
}
}
_ => Err(()),
}
});
if result.is_err() {