css_ast/types/
single_transition.rs

1use super::prelude::*;
2use crate::{EasingFunction, NoneOr, SingleTransitionProperty, Time, TransitionBehaviorValue};
3use css_parse::parse_optionals;
4
5/// <https://drafts.csswg.org/css-transitions-2/#single-transition>
6///
7/// ```text,ignore
8/// <single-transition> = [ none | <single-transition-property> ] || <time> || <easing-function> || <time> || <transition-behavior-value>
9/// ```
10#[derive(ToCursors, ToSpan, SemanticEq, Debug, Clone, PartialEq, Eq, PartialOrd, Ord, Hash)]
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 SingleTransition<'a> {
15	#[cfg_attr(feature = "visitable", visit(skip))]
16	pub property: Option<NoneOr<SingleTransitionProperty>>,
17	pub duration: Option<Time>,
18	pub easing: Option<EasingFunction<'a>>,
19	pub delay: Option<Time>,
20	#[cfg_attr(feature = "visitable", visit(skip))]
21	pub behavior: Option<TransitionBehaviorValue>,
22}
23
24impl<'a> Peek<'a> for SingleTransition<'a> {
25	fn peek<I>(p: &Parser<'a, I>, c: Cursor) -> bool
26	where
27		I: Iterator<Item = Cursor> + Clone,
28	{
29		<NoneOr<SingleTransitionProperty>>::peek(p, c) || EasingFunction::peek(p, c) || Time::peek(p, c)
30	}
31}
32
33impl<'a> Parse<'a> for SingleTransition<'a> {
34	fn parse<I>(p: &mut Parser<'a, I>) -> ParserResult<Self>
35	where
36		I: Iterator<Item = Cursor> + Clone,
37	{
38		let (easing, property, duration, delay, behavior) = parse_optionals!(p, easing: EasingFunction, property: NoneOr<SingleTransitionProperty>, duration: Time, delay: Time, behavior: TransitionBehaviorValue);
39		Ok(Self { easing, property, duration, delay, behavior })
40	}
41}
42
43#[cfg(test)]
44mod tests {
45	use super::*;
46	use crate::CssAtomSet;
47	use css_parse::{assert_parse, assert_parse_error};
48
49	type NoneOrSingleTransitionProperty = NoneOr<SingleTransitionProperty>;
50
51	#[test]
52	fn size_test() {
53		assert_eq!(std::mem::size_of::<SingleTransition>(), 184);
54	}
55
56	#[test]
57	fn test_writes() {
58		assert_parse!(
59			CssAtomSet::ATOMS,
60			NoneOrSingleTransitionProperty,
61			"none",
62			NoneOrSingleTransitionProperty::None(_)
63		);
64		assert_parse!(
65			CssAtomSet::ATOMS,
66			NoneOrSingleTransitionProperty,
67			"all",
68			NoneOrSingleTransitionProperty::Some(_)
69		);
70
71		assert_parse!(CssAtomSet::ATOMS, SingleTransition, "none");
72		assert_parse!(CssAtomSet::ATOMS, SingleTransition, "opacity");
73		assert_parse!(CssAtomSet::ATOMS, SingleTransition, "opacity 1s");
74		assert_parse!(CssAtomSet::ATOMS, SingleTransition, "opacity 1s ease-in");
75		assert_parse!(CssAtomSet::ATOMS, SingleTransition, "opacity 1s ease-in 2s");
76		assert_parse!(CssAtomSet::ATOMS, SingleTransition, "2s ease-in");
77		assert_parse!(CssAtomSet::ATOMS, SingleTransition, "1s opacity");
78		assert_parse!(CssAtomSet::ATOMS, SingleTransition, "ease-in 1s opacity");
79		assert_parse!(CssAtomSet::ATOMS, SingleTransition, "1s 2s ease-in opacity");
80		assert_parse!(CssAtomSet::ATOMS, SingleTransition, "ease-in opacity 1s 2s");
81		assert_parse!(CssAtomSet::ATOMS, SingleTransition, "ease-in");
82		assert_parse!(CssAtomSet::ATOMS, SingleTransition, "1s");
83		assert_parse!(CssAtomSet::ATOMS, SingleTransition, "1s 2s");
84		assert_parse!(CssAtomSet::ATOMS, SingleTransition, "all 1s ease-in 2s");
85		assert_parse!(CssAtomSet::ATOMS, SingleTransition, "none 1s");
86		assert_parse!(CssAtomSet::ATOMS, SingleTransition, "none 1s normal");
87		assert_parse!(CssAtomSet::ATOMS, SingleTransition, "1s opacity allow-discrete");
88	}
89
90	#[test]
91	fn test_errors() {
92		assert_parse_error!(CssAtomSet::ATOMS, SingleTransition, "1deg");
93		assert_parse_error!(CssAtomSet::ATOMS, SingleTransition, "none none");
94	}
95
96	#[test]
97	#[cfg(feature = "visitable")]
98	fn test_visits() {
99		use crate::assert_visits;
100		assert_visits!("1s", SingleTransition, Time);
101		assert_visits!("ease-in", SingleTransition, EasingFunction);
102		assert_visits!("1s 2s", SingleTransition, Time, Time);
103		assert_visits!("1s ease-in 2s", SingleTransition, Time, EasingFunction, Time);
104	}
105}
css_ast/types/single_transition.rs

css_ast/types/
single_transition.rs
