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style: Make PercentageOrNumber also reject negative percentages.

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Emilio Cobos Álvarez 2017-03-26 19:56:25 +02:00
parent c2d9f663af
commit 372379428b
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2 changed files with 20 additions and 10 deletions
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23
components/style/values/specified/length.rs
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@ -909,15 +909,26 @@ impl ToCss for Percentage {
}
}
impl Percentage {
fn parse_internal(input: &mut Parser, context: AllowedNumericType) -> Result<Self, ()> {
match try!(input.next()) {
Token::Percentage(ref value) if context.is_ok(value.unit_value) => {
Ok(Percentage(value.unit_value))
}
_ => Err(())
}
}
/// Parses a percentage token, but rejects it if it's negative.
pub fn parse_non_negative(input: &mut Parser) -> Result<Self, ()> {
Self::parse_internal(input, AllowedNumericType::NonNegative)
}
}
impl Parse for Percentage {
#[inline]
fn parse(_context: &ParserContext, input: &mut Parser) -> Result<Self, ()> {
let context = AllowedNumericType::All;
match try!(input.next()) {
Token::Percentage(ref value) if context.is_ok(value.unit_value) =>
Ok(Percentage(value.unit_value)),
_ => Err(())
}
Self::parse_internal(input, AllowedNumericType::All)
}
}