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style: Simplify CSSWideKeyword::parse.

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Differential Revision: https://phabricator.services.mozilla.com/D5972
This commit is contained in:
Emilio Cobos Álvarez 2018-09-17 00:53:37 +00:00
parent 72ce653daf
commit bc39f16b4b
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1 changed files with 11 additions and 14 deletions
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25
components/style/properties/properties.mako.rs
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@ -853,25 +853,22 @@ impl CSSWideKeyword {
CSSWideKeyword::Unset => "unset",
}
}
/// Takes the result of cssparser::Parser::expect_ident() and converts it
/// to a CSSWideKeyword.
pub fn from_ident<'i>(ident: &str) -> Option<Self> {
match_ignore_ascii_case! { ident,
// If modifying this set of keyword, also update values::CustomIdent::from_ident
"initial" => Some(CSSWideKeyword::Initial),
"inherit" => Some(CSSWideKeyword::Inherit),
"unset" => Some(CSSWideKeyword::Unset),
_ => None
}
}
}
impl CSSWideKeyword {
fn parse(input: &mut Parser) -> Result<Self, ()> {
let ident = input.expect_ident().map_err(|_| ())?.clone();
let keyword = {
let ident = input.expect_ident().map_err(|_| ())?;
match_ignore_ascii_case! { ident,
// If modifying this set of keyword, also update values::CustomIdent::from_ident
"initial" => CSSWideKeyword::Initial,
"inherit" => CSSWideKeyword::Inherit,
"unset" => CSSWideKeyword::Unset,
_ => return Err(()),
}
};
input.expect_exhausted().map_err(|_| ())?;
CSSWideKeyword::from_ident(&ident).ok_or(())
Ok(keyword)
}
}