css_ast/units/
float.rs

1use super::prelude::*;
2
3#[derive(ToCursors, IntoCursor, ToSpan, SemanticEq, Debug, Copy, Clone, PartialEq, Eq, PartialOrd, Ord, Hash)]
4#[cfg_attr(feature = "serde", derive(serde::Serialize), serde(transparent))]
5#[cfg_attr(feature = "visitable", derive(csskit_derives::Visitable), visit(skip))]
6pub struct CSSFloat(T![Number]);
7
8impl CSSFloat {
9	#[allow(non_upper_case_globals)]
10	pub const Zero: CSSFloat = CSSFloat(<T![Number]>::ZERO);
11}
12
13impl From<CSSFloat> for i32 {
14	fn from(value: CSSFloat) -> Self {
15		value.0.into()
16	}
17}
18
19impl From<CSSFloat> for f32 {
20	fn from(value: CSSFloat) -> Self {
21		value.0.into()
22	}
23}
24
25impl<'a> Peek<'a> for CSSFloat {
26	const PEEK_KINDSET: KindSet = KindSet::new(&[Kind::Number]);
27
28	#[inline(always)]
29	fn peek<I>(p: &Parser<'a, I>, c: Cursor) -> bool
30	where
31		I: Iterator<Item = Cursor> + Clone,
32	{
33		<T![Number]>::peek(p, c) && c.token().is_float()
34	}
35}
36
37impl<'a> Parse<'a> for CSSFloat {
38	fn parse<I>(p: &mut Parser<'a, I>) -> ParserResult<Self>
39	where
40		I: Iterator<Item = Cursor> + Clone,
41	{
42		if p.peek::<Self>() {
43			p.parse::<T![Number]>().map(Self)
44		} else {
45			Err(Diagnostic::new(p.next(), Diagnostic::unexpected))?
46		}
47	}
48}
49
50#[cfg(test)]
51mod tests {
52	use super::*;
53	use crate::CssAtomSet;
54	use css_parse::assert_parse;
55
56	#[test]
57	fn size_test() {
58		assert_eq!(std::mem::size_of::<CSSFloat>(), 12);
59	}
60
61	#[test]
62	fn test_writes() {
63		assert_parse!(CssAtomSet::ATOMS, CSSFloat, "0.01");
64		assert_parse!(CssAtomSet::ATOMS, CSSFloat, "3.141");
65	}
66}
css_ast/units/float.rs

css_ast/units/
float.rs
