a917619a4a
… rather than the start location of the current construct. This likely places the error just *after* of the unexpected token whereas before would be best, but that’s likely a much bigger change. See https://bugzilla.mozilla.org/show_bug.cgi?id=1378861 Source-Repo: https://github.com/servo/servo Source-Revision: c79a54dbd9d3a590f5fd8191b8e57a0b9d1d0fdb
44 lines
1.8 KiB
Rust
44 lines
1.8 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 http://mozilla.org/MPL/2.0/. */
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//! Specified types for CSS values related to backgrounds.
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use cssparser::Parser;
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use parser::{Parse, ParserContext};
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use selectors::parser::SelectorParseErrorKind;
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use style_traits::ParseError;
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use values::generics::background::BackgroundSize as GenericBackgroundSize;
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use values::specified::length::LengthOrPercentageOrAuto;
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/// A specified value for the `background-size` property.
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pub type BackgroundSize = GenericBackgroundSize<LengthOrPercentageOrAuto>;
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impl Parse for BackgroundSize {
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fn parse<'i, 't>(context: &ParserContext, input: &mut Parser<'i, 't>) -> Result<Self, ParseError<'i>> {
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if let Ok(width) = input.try(|i| LengthOrPercentageOrAuto::parse_non_negative(context, i)) {
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let height = input
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.try(|i| LengthOrPercentageOrAuto::parse_non_negative(context, i))
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.unwrap_or(LengthOrPercentageOrAuto::Auto);
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return Ok(GenericBackgroundSize::Explicit { width, height });
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}
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let location = input.current_source_location();
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let ident = input.expect_ident()?;
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(match_ignore_ascii_case! { &ident,
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"cover" => Ok(GenericBackgroundSize::Cover),
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"contain" => Ok(GenericBackgroundSize::Contain),
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_ => Err(()),
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}).map_err(|()| location.new_custom_error(SelectorParseErrorKind::UnexpectedIdent(ident.clone())))
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}
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}
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impl BackgroundSize {
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/// Returns `auto auto`.
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pub fn auto() -> Self {
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GenericBackgroundSize::Explicit {
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width: LengthOrPercentageOrAuto::Auto,
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height: LengthOrPercentageOrAuto::Auto,
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}
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}
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}
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