oxc_css_parser/parser/at_rule/
custom_media.rs

1use super::Parser;
2use crate::{Parse, ast::*, error::PResult, pos::Span};
3
4// https://www.w3.org/TR/mediaqueries-5/#custom-mq
5//
6// @custom-media <extension-name> [ <media-query-list> | true | false ] ;
7// <extension-name> = <dashed-ident>
8impl<'a> Parse<'a> for CustomMedia<'a> {
9    fn parse(input: &mut Parser<'a>) -> PResult<Self> {
10        let name = input.parse_dashed_ident()?;
11        let value = input.parse::<CustomMediaValue>()?;
12        let span = Span { start: name.span().start, end: value.span().end };
13        Ok(CustomMedia { name, value, span })
14    }
15}
16
17// <custom-media-value> = <media-query-list> | true | false
18impl<'a> Parse<'a> for CustomMediaValue<'a> {
19    fn parse(input: &mut Parser<'a>) -> PResult<Self> {
20        let peek = input.cursor.peek()?;
21        if peek.ident(input.source).is_some() {
22            if peek.is_ident_name_eq_ignore_ascii_case(input.source, "true") {
23                input.parse().map(CustomMediaValue::True)
24            } else if peek.is_ident_name_eq_ignore_ascii_case(input.source, "false") {
25                input.parse().map(CustomMediaValue::False)
26            } else {
27                input.parse().map(CustomMediaValue::MediaQueryList)
28            }
29        } else {
30            input.parse().map(CustomMediaValue::MediaQueryList)
31        }
32    }
33}
oxc_css_parser/parser/at_rule/custom_media.rs

oxc_css_parser/parser/at_rule/
custom_media.rs
