css_ast/types/
alt_text.rs

1use super::prelude::*;
2use crate::{AttrFunction, Counter};
3use css_parse::Box;
4
5/// <https://drafts.csswg.org/css-content-3/#typedef-alt-text>
6///
7/// ```text,ignore
8/// <alt-text> = [ <string> | <counter> | <attr()> ]+
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 AltText<'a>(pub Vec<'a, ContentAltItem<'a>>);
16
17/// One item of an [`AltText`].
18///
19/// ```text,ignore
20/// <string> | <counter> | <attr()>
21/// ```
22#[node]
23#[derive(Parse, Peek, ToCursors, ToSpan, SemanticEq, Debug, Clone, PartialEq, Eq, PartialOrd, Ord, Hash)]
24#[cfg_attr(feature = "serde", derive(serde::Serialize), serde())]
25#[cfg_attr(feature = "visitable", derive(csskit_derives::Visitable), visit)]
26#[derive(csskit_derives::NodeWithMetadata)]
27pub enum ContentAltItem<'a> {
28	String(T![String]),
29	Counter(Counter<'a>),
30	AttrFunction(Box<'a, AttrFunction<'a>>),
31}
32#[cfg(test)]
33mod tests {
34	use super::*;
35	use crate::CssAtomSet;
36	use css_parse::{assert_parse, assert_peek_false};
37
38	#[test]
39	fn test_writes() {
40		assert_parse!(CssAtomSet::ATOMS, ContentAltItem, "\"hello\"");
41		assert_parse!(CssAtomSet::ATOMS, ContentAltItem, "counter(section)");
42		assert_parse!(CssAtomSet::ATOMS, ContentAltItem, "attr(foo)");
43		assert_parse!(CssAtomSet::ATOMS, AltText, "\"Chapter \" counter(chapter) attr(title)");
44	}
45
46	#[test]
47	fn test_errors() {
48		assert_peek_false!(CssAtomSet::ATOMS, ContentAltItem, "open-quote");
49	}
50}
css_ast/types/alt_text.rs

css_ast/types/
alt_text.rs
