32 lines
1 KiB
Rust
32 lines
1 KiB
Rust
/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at https://mozilla.org/MPL/2.0/. */
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//! Specified types for <ratio>.
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//!
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//! [ratio]: https://drafts.csswg.org/css-values/#ratios
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use crate::parser::{Parse, ParserContext};
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use crate::values::generics::ratio::Ratio as GenericRatio;
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use crate::values::specified::NonNegativeNumber;
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use crate::One;
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use cssparser::Parser;
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use style_traits::ParseError;
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/// A specified <ratio> value.
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pub type Ratio = GenericRatio<NonNegativeNumber>;
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impl Parse for Ratio {
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fn parse<'i, 't>(
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context: &ParserContext,
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input: &mut Parser<'i, 't>,
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) -> Result<Self, ParseError<'i>> {
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let a = NonNegativeNumber::parse(context, input)?;
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let b = match input.try_parse(|input| input.expect_delim('/')) {
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Ok(()) => NonNegativeNumber::parse(context, input)?,
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_ => One::one(),
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};
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Ok(GenericRatio(a, b))
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}
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}
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