css_ast/rules/media/features/
hack.rs

1use crate::CssAtomSet;
2use css_parse::{Cursor, Diagnostic, Parse, Parser, Result as ParserResult, T};
3use csskit_derives::{SemanticEq, ToCursors, ToSpan};
4
5#[derive(ToCursors, ToSpan, SemanticEq, Debug, Copy, Clone, PartialEq, Eq, PartialOrd, Ord, Hash)]
6#[cfg_attr(feature = "serde", derive(serde::Serialize), serde())]
7pub enum HackMediaFeature {
8	IEBackslashZero(T!['('], T![Ident], T![:], T![Dimension], T![')']),
9}
10
11impl<'a> Parse<'a> for HackMediaFeature {
12	fn parse<I>(p: &mut Parser<'a, I>) -> ParserResult<Self>
13	where
14		I: Iterator<Item = Cursor> + Clone,
15	{
16		let open = p.parse::<T!['(']>()?;
17		let keyword = p.parse::<T![Ident]>()?;
18		if !p.equals_atom(keyword.into(), &CssAtomSet::MinWidth) {
19			Err(Diagnostic::new(keyword.into(), Diagnostic::expected_ident))?
20		}
21		let colon = p.parse::<T![:]>()?;
22		let dimension = p.parse::<T![Dimension]>()?;
23		let c: Cursor = dimension.into();
24		let str = p.to_source_cursor(c).source();
25		if str != "0\\0" {
26			Err(Diagnostic::new(c, Diagnostic::unexpected))?
27		}
28		let close = p.parse::<T![')']>()?;
29		Ok(Self::IEBackslashZero(open, keyword, colon, dimension, close))
30	}
31}
32
33#[cfg(test)]
34mod tests {
35	use super::*;
36	use crate::CssAtomSet;
37	use css_parse::assert_parse;
38
39	#[test]
40	fn size_test() {
41		assert_eq!(std::mem::size_of::<HackMediaFeature>(), 60);
42	}
43
44	#[test]
45	fn test_writes() {
46		assert_parse!(CssAtomSet::ATOMS, HackMediaFeature, "(min-width:0\\0)");
47	}
48}
css_ast/rules/media/features/hack.rs

css_ast/rules/media/features/
hack.rs
