css_ast/functions/
stripes_function.rs

1use super::prelude::*;
2use crate::{CalcableValue, types::Color, units::LengthPercentageOrFlex};
3
4/// <https://drafts.csswg.org/css-images-4/#typedef-image-1d>
5///
6/// ```text,ignore
7/// <stripes()> = stripes( <color-stripe># )
8/// <color-stripe> = <color> && [ <length-percentage> | <flex> ]?
9/// ```
10#[node]
11#[derive(Parse, Peek, ToCursors, ToSpan, SemanticEq, Debug, Clone, PartialEq, Eq, PartialOrd, Ord, Hash)]
12#[cfg_attr(feature = "serde", derive(serde::Serialize), serde())]
13#[cfg_attr(feature = "visitable", derive(csskit_derives::Visitable), visit)]
14#[derive(csskit_derives::NodeWithMetadata)]
15pub struct StripesFunction<'a> {
16	#[cfg_attr(feature = "visitable", visit(skip))]
17	#[atom(CssAtomSet::Stripes)]
18	pub name: T![Function],
19	pub params: CommaSeparated<'a, ColorStripe<'a>>,
20	#[cfg_attr(feature = "visitable", visit(skip))]
21	#[semantic_eq(skip)]
22	pub close: T![')'],
23}
24
25/// <https://drafts.csswg.org/css-images-4/#typedef-color-stripe>
26///
27/// ```text,ignore
28/// <color-stripe> = <color> && [ <length-percentage> | <flex> ]?
29/// ```
30#[node]
31#[derive(ToCursors, ToSpan, SemanticEq, Debug, Clone, PartialEq, Eq, PartialOrd, Ord, Hash)]
32#[cfg_attr(feature = "serde", derive(serde::Serialize), serde())]
33#[cfg_attr(feature = "visitable", derive(csskit_derives::Visitable), visit(children))]
34#[derive(csskit_derives::NodeWithMetadata)]
35pub struct ColorStripe<'a> {
36	pub color: Color<'a>,
37	pub thickness: Option<CalcableValue<'a, LengthPercentageOrFlex>>,
38}
39
40impl<'a> Peek<'a> for ColorStripe<'a> {
41	const PEEK_KINDSET: KindSet = Color::PEEK_KINDSET.combine(CalcableValue::<LengthPercentageOrFlex>::PEEK_KINDSET);
42
43	#[inline(always)]
44	fn peek<I>(p: &Parser<'a, I>, c: Cursor) -> bool
45	where
46		I: Iterator<Item = Cursor> + Clone,
47	{
48		Color::peek(p, c) || CalcableValue::<LengthPercentageOrFlex>::peek(p, c)
49	}
50}
51
52impl<'a> Parse<'a> for ColorStripe<'a> {
53	fn parse<I>(p: &mut Parser<'a, I>) -> ParserResult<Self>
54	where
55		I: Iterator<Item = Cursor> + Clone,
56	{
57		let mut color = p.parse_if_peek::<Color>()?;
58		let thickness = p.parse_if_peek::<CalcableValue<LengthPercentageOrFlex>>()?;
59		if color.is_none() {
60			color = Some(p.parse::<Color>()?);
61		}
62		Ok(Self { color: color.unwrap(), thickness })
63	}
64}
65
66#[cfg(test)]
67mod tests {
68	use super::*;
69	use crate::CssAtomSet;
70	use css_parse::assert_parse;
71
72	#[test]
73	fn test_writes() {
74		assert_parse!(CssAtomSet::ATOMS, StripesFunction, "stripes(red 1fr,green 2fr,blue 100px)");
75		assert_parse!(CssAtomSet::ATOMS, StripesFunction, "stripes(0.1fr red,0.2fr green,100px blue)");
76		assert_parse!(CssAtomSet::ATOMS, StripesFunction, "stripes(red 1fr,2fr green,blue 100px)");
77	}
78
79	#[test]
80	fn test_substitution() {
81		assert_parse!(CssAtomSet::ATOMS, StripesFunction, "stripes(red var(--t),green 2fr)");
82		assert_parse!(CssAtomSet::ATOMS, StripesFunction, "stripes(red calc(1px + 2px),blue 100px)");
83	}
84}
css_ast/functions/stripes_function.rs

css_ast/functions/
stripes_function.rs
