css_ast/units/
float.rs

1use super::prelude::*;
2
3#[node]
4#[derive(ToCursors, IntoCursor, ToSpan, SemanticEq, Debug, Copy, Clone, PartialEq, Eq, PartialOrd, Ord, Hash)]
5#[cfg_attr(feature = "serde", derive(serde::Serialize), serde(transparent))]
6#[cfg_attr(feature = "visitable", derive(csskit_derives::Visitable), visit(skip))]
7#[derive(csskit_derives::NodeWithMetadata)]
8pub struct CSSFloat(T![Number]);
9
10impl CSSFloat {
11	#[allow(non_upper_case_globals)]
12	pub const Zero: CSSFloat = CSSFloat(<T![Number]>::ZERO);
13}
14
15impl From<CSSFloat> for i32 {
16	fn from(value: CSSFloat) -> Self {
17		value.0.into()
18	}
19}
20
21impl From<CSSFloat> for f32 {
22	fn from(value: CSSFloat) -> Self {
23		value.0.into()
24	}
25}
26
27impl<'a> Peek<'a> for CSSFloat {
28	const PEEK_KINDSET: KindSet = KindSet::new(&[Kind::Number]);
29
30	#[inline(always)]
31	fn peek<I>(p: &Parser<'a, I>, c: Cursor) -> bool
32	where
33		I: Iterator<Item = Cursor> + Clone,
34	{
35		<T![Number]>::peek(p, c) && c.token().is_float()
36	}
37}
38
39impl<'a> Parse<'a> for CSSFloat {
40	fn parse<I>(p: &mut Parser<'a, I>) -> ParserResult<Self>
41	where
42		I: Iterator<Item = Cursor> + Clone,
43	{
44		if p.peek::<Self>() {
45			p.parse::<T![Number]>().map(Self)
46		} else {
47			Err(Diagnostic::new(p.next(), Diagnostic::unexpected))?
48		}
49	}
50}
51
52#[cfg(test)]
53mod tests {
54	use super::*;
55	use crate::CssAtomSet;
56	use css_parse::assert_parse;
57
58	#[test]
59	fn test_writes() {
60		assert_parse!(CssAtomSet::ATOMS, CSSFloat, "0.01");
61		assert_parse!(CssAtomSet::ATOMS, CSSFloat, "3.141");
62	}
63}
css_ast/units/float.rs

css_ast/units/
float.rs
