css_ast/types/
custom_ident.rs

1use super::prelude::*;
2
3/// <https://drafts.csswg.org/css-values/#custom-idents>
4///
5/// Wraps `T![Ident]`, but exists for the purposes of Visitable/VisitableMut.
6/// Excludes CSS-wide keywords: `initial`, `inherit`, `unset`, `revert`, `revert-layer`, `default`.
7#[derive(IntoCursor, ToSpan, SemanticEq, ToCursors, Debug, Copy, Clone, PartialEq, Eq, PartialOrd, Ord, Hash)]
8#[cfg_attr(feature = "serde", derive(serde::Serialize), serde())]
9#[cfg_attr(feature = "visitable", derive(csskit_derives::Visitable), visit(self))]
10#[derive(csskit_derives::NodeWithMetadata)]
11pub struct CustomIdent(T![Ident]);
12
13impl<'a> Peek<'a> for CustomIdent {
14	const PEEK_KINDSET: KindSet = KindSet::new(&[Kind::Ident]);
15
16	#[inline(always)]
17	fn peek<I>(p: &Parser<'a, I>, c: Cursor) -> bool
18	where
19		I: Iterator<Item = Cursor> + Clone,
20	{
21		if !<T![Ident]>::peek(p, c) {
22			return false;
23		}
24		!matches!(
25			p.to_atom::<CssAtomSet>(c),
26			CssAtomSet::Initial
27				| CssAtomSet::Inherit
28				| CssAtomSet::Unset
29				| CssAtomSet::Revert
30				| CssAtomSet::RevertLayer
31				| CssAtomSet::Default
32		)
33	}
34}
35
36impl<'a> Parse<'a> for CustomIdent {
37	fn parse<I>(p: &mut Parser<'a, I>) -> ParserResult<Self>
38	where
39		I: Iterator<Item = Cursor> + Clone,
40	{
41		let c = p.peek_n(1);
42		if !Self::peek(p, c) {
43			return Err(Diagnostic::new(c, Diagnostic::unexpected_ident));
44		}
45		Ok(Self(p.parse::<T![Ident]>()?))
46	}
47}
css_ast/types/custom_ident.rs

css_ast/types/
custom_ident.rs
