css_ast/units/
int.rs

1use super::prelude::*;
2
3#[derive(IntoCursor, ToSpan, SemanticEq, ToCursors, 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))]
6#[derive(csskit_derives::NodeWithMetadata)]
7pub struct CSSInt(T![Number]);
8
9impl CSSInt {
10	#[allow(non_upper_case_globals)]
11	pub const Zero: CSSInt = CSSInt(<T![Number]>::ZERO);
12
13	pub fn preserve_sign(self) -> Self {
14		CSSInt(self.0.preserve_sign())
15	}
16}
17
18impl From<CSSInt> for i32 {
19	fn from(value: CSSInt) -> Self {
20		value.0.into()
21	}
22}
23
24impl From<CSSInt> for f32 {
25	fn from(value: CSSInt) -> Self {
26		value.0.into()
27	}
28}
29
30impl ToNumberValue for CSSInt {
31	fn to_number_value(&self) -> Option<f32> {
32		Some(self.0.into())
33	}
34}
35
36impl<'a> Peek<'a> for CSSInt {
37	const PEEK_KINDSET: KindSet = KindSet::new(&[Kind::Number]);
38
39	#[inline(always)]
40	fn peek<I>(p: &Parser<'a, I>, c: Cursor) -> bool
41	where
42		I: Iterator<Item = Cursor> + Clone,
43	{
44		<T![Number]>::peek(p, c) && c.token().is_int()
45	}
46}
47
48impl<'a> Parse<'a> for CSSInt {
49	fn parse<I>(p: &mut Parser<'a, I>) -> ParserResult<Self>
50	where
51		I: Iterator<Item = Cursor> + Clone,
52	{
53		if p.peek::<Self>() {
54			p.parse::<T![Number]>().map(Self)
55		} else {
56			Err(Diagnostic::new(p.next(), Diagnostic::unexpected))?
57		}
58	}
59}
60
61#[cfg(test)]
62mod tests {
63	use super::*;
64	use crate::CssAtomSet;
65	use css_parse::assert_parse;
66
67	#[test]
68	fn size_test() {
69		assert_eq!(std::mem::size_of::<CSSInt>(), 12);
70	}
71
72	#[test]
73	fn test_writes() {
74		assert_parse!(CssAtomSet::ATOMS, CSSInt, "0");
75		assert_parse!(CssAtomSet::ATOMS, CSSInt, "999999");
76	}
77}
css_ast/units/int.rs

css_ast/units/
int.rs
