css_ast/types/
shadow.rs

1use super::prelude::*;
2use crate::{Color, Length, NonNegative};
3
4/// <https://drafts.csswg.org/css-backgrounds-3/#typedef-shadow>
5///
6/// ```text,ignore
7/// <shadow> = <color>? && [<length>{2} <length [0,∞]>? <length>?] && inset?
8/// ```
9#[derive(Parse, Peek, ToCursors, ToSpan, SemanticEq, Debug, Clone, PartialEq, Eq, PartialOrd, Ord, Hash)]
10#[parse(all_must_occur)]
11#[cfg_attr(feature = "serde", derive(serde::Serialize), serde())]
12#[cfg_attr(feature = "visitable", derive(csskit_derives::Visitable), visit)]
13#[derive(csskit_derives::NodeWithMetadata)]
14pub struct Shadow<'a> {
15	pub color: Option<Color<'a>>,
16	pub offset: (Length, Length, Option<NonNegative<Length>>, Option<Length>),
17	#[atom(CssAtomSet::Inset)]
18	pub inset: Option<T![Ident]>,
19}
20
21#[cfg(test)]
22mod tests {
23	use super::*;
24	use crate::CssAtomSet;
25	use css_parse::{assert_parse, assert_parse_error, assert_peek_false};
26
27	#[test]
28	fn size_test() {
29		assert_eq!(std::mem::size_of::<Shadow<'_>>(), 104);
30	}
31
32	#[test]
33	fn test_writes() {
34		assert_parse!(CssAtomSet::ATOMS, Shadow, "10px 20px");
35		assert_parse!(CssAtomSet::ATOMS, Shadow, "10px 20px 5px");
36		assert_parse!(CssAtomSet::ATOMS, Shadow, "10px 20px 5px 3px");
37		assert_parse!(CssAtomSet::ATOMS, Shadow, "red 10px 20px");
38		assert_parse!(CssAtomSet::ATOMS, Shadow, "#ff0000 10px 20px 5px");
39		assert_parse!(CssAtomSet::ATOMS, Shadow, "rgba(255,0,0,0.5)10px 20px 5px 3px");
40		assert_parse!(CssAtomSet::ATOMS, Shadow, "10px 20px inset");
41		assert_parse!(CssAtomSet::ATOMS, Shadow, "10px 20px 5px inset");
42		assert_parse!(CssAtomSet::ATOMS, Shadow, "10px 20px 5px 3px inset");
43		assert_parse!(CssAtomSet::ATOMS, Shadow, "red 10px 20px inset");
44		assert_parse!(CssAtomSet::ATOMS, Shadow, "blue 10px 20px 5px 3px inset");
45		assert_parse!(CssAtomSet::ATOMS, Shadow, "-10px -20px");
46		assert_parse!(CssAtomSet::ATOMS, Shadow, "red -10px -20px 5px");
47		assert_parse!(CssAtomSet::ATOMS, Shadow, "0 0");
48		assert_parse!(CssAtomSet::ATOMS, Shadow, "0 0 0");
49		assert_parse!(CssAtomSet::ATOMS, Shadow, "0 0 0 0");
50		assert_parse!(CssAtomSet::ATOMS, Shadow, "1em 2em");
51		assert_parse!(CssAtomSet::ATOMS, Shadow, "1rem 2rem 0.5rem");
52	}
53
54	#[test]
55	fn test_inset_leading() {
56		assert_parse!(CssAtomSet::ATOMS, Shadow, "inset 10px 20px");
57		assert_parse!(CssAtomSet::ATOMS, Shadow, "inset 0 1px 1px");
58		assert_parse!(CssAtomSet::ATOMS, Shadow, "inset 0 1px 1px rgba(0,0,0,.075)");
59		assert_parse!(CssAtomSet::ATOMS, Shadow, "inset red 10px 20px");
60		assert_parse!(CssAtomSet::ATOMS, Shadow, "red inset 10px 20px");
61	}
62
63	#[test]
64	fn test_errors() {
65		assert_peek_false!(CssAtomSet::ATOMS, Shadow, "");
66		assert_peek_false!(CssAtomSet::ATOMS, Shadow, "10% 20%");
67		assert_parse_error!(CssAtomSet::ATOMS, Shadow, "10px");
68		assert_parse_error!(CssAtomSet::ATOMS, Shadow, "red");
69		assert_parse_error!(CssAtomSet::ATOMS, Shadow, "inset");
70		assert_parse_error!(CssAtomSet::ATOMS, Shadow, "10px 20px -5px");
71		assert_parse_error!(CssAtomSet::ATOMS, Shadow, "10px 20px 5px 3px 7px");
72		assert_parse_error!(CssAtomSet::ATOMS, Shadow, "10px 20px 5px inset 3px");
73		assert_parse_error!(CssAtomSet::ATOMS, Shadow, "10px 20px 5px 3px inset extra");
74	}
75
76	#[test]
77	#[cfg(feature = "visitable")]
78	fn test_visits() {
79		use crate::assert_visits;
80		assert_visits!("10px 20px", Shadow, Length, Length);
81		assert_visits!("red 10px 20px", Shadow, Color, Length, Length);
82		assert_visits!("10px 20px 5px", Shadow, Length, Length, Length);
83		assert_visits!("blue 10px 20px 5px 3px", Shadow, Color, Length, Length, Length, Length);
84	}
85}
css_ast/types/shadow.rs

css_ast/types/
shadow.rs
