css_ast/types/
opacity_value.rs

1use super::prelude::*;
2use crate::Percentage;
3
4#[node]
5#[derive(
6	IntoCursor, ToSpan, SemanticEq, Peek, Parse, ToCursors, Debug, Copy, Clone, PartialEq, Eq, PartialOrd, Ord, Hash,
7)]
8#[cfg_attr(feature = "serde", derive(serde::Serialize))]
9#[cfg_attr(feature = "visitable", derive(csskit_derives::Visitable), visit(self))]
10#[derive(csskit_derives::NodeWithMetadata)]
11pub enum OpacityValue {
12	Number(T![Number]),
13	Percent(Percentage),
14}
15
16impl OpacityValue {
17	#[allow(non_upper_case_globals)]
18	pub const Zero: OpacityValue = OpacityValue::Number(<T![Number]>::NUMBER_ZERO);
19}
20
21impl From<OpacityValue> for i32 {
22	fn from(value: OpacityValue) -> Self {
23		match value {
24			OpacityValue::Number(t) => t.into(),
25			OpacityValue::Percent(t) => {
26				let f: f32 = t.into();
27				f as i32
28			}
29		}
30	}
31}
32
33impl From<OpacityValue> for f32 {
34	fn from(value: OpacityValue) -> Self {
35		match value {
36			OpacityValue::Number(t) => t.into(),
37			OpacityValue::Percent(t) => t.into(),
38		}
39	}
40}
41
42#[cfg(test)]
43mod tests {
44	use super::*;
45	use crate::CssAtomSet;
46	use css_parse::{assert_parse, assert_peek_false};
47
48	#[test]
49	fn test_writes() {
50		assert_parse!(CssAtomSet::ATOMS, OpacityValue, "0.1");
51		assert_parse!(CssAtomSet::ATOMS, OpacityValue, "1");
52		assert_parse!(CssAtomSet::ATOMS, OpacityValue, "50%");
53		assert_parse!(CssAtomSet::ATOMS, OpacityValue, "20");
54		assert_parse!(CssAtomSet::ATOMS, OpacityValue, "1000%");
55		assert_parse!(CssAtomSet::ATOMS, OpacityValue, "-2");
56	}
57
58	#[test]
59	fn test_errors() {
60		assert_peek_false!(CssAtomSet::ATOMS, OpacityValue, "red");
61		assert_peek_false!(CssAtomSet::ATOMS, OpacityValue, "10px");
62	}
63}
css_ast/types/opacity_value.rs

css_ast/types/
opacity_value.rs
