css_ast/functions/
string_function.rs

1use super::prelude::*;
2
3/// <https://drafts.csswg.org/css-content-3/#string-function>
4///
5/// ```text,ignore
6/// string() = string( <custom-ident> , [ first | start | last | first-except ]? )
7/// ```
8#[derive(Parse, Peek, ToCursors, ToSpan, SemanticEq, Debug, Clone, PartialEq, Eq, PartialOrd, Ord, Hash)]
9#[cfg_attr(feature = "serde", derive(serde::Serialize), serde())]
10#[cfg_attr(feature = "visitable", derive(csskit_derives::Visitable), visit(self))]
11pub struct StringFunction {
12	#[atom(CssAtomSet::String)]
13	pub name: T![Function],
14	pub params: StringFunctionParams,
15	pub close: T![')'],
16}
17
18#[derive(Parse, Peek, ToCursors, ToSpan, SemanticEq, Debug, Clone, PartialEq, Eq, PartialOrd, Ord, Hash)]
19#[cfg_attr(feature = "serde", derive(serde::Serialize), serde())]
20pub struct StringFunctionParams {
21	pub ident: T![Ident],
22	pub comma: Option<T![,]>,
23	pub keyword: Option<StringKeyword>,
24}
25
26#[derive(Parse, Peek, ToCursors, ToSpan, SemanticEq, Debug, Clone, PartialEq, Eq, PartialOrd, Ord, Hash)]
27#[cfg_attr(feature = "serde", derive(serde::Serialize), serde())]
28pub enum StringKeyword {
29	#[atom(CssAtomSet::First)]
30	First(T![Ident]),
31	#[atom(CssAtomSet::Start)]
32	Start(T![Ident]),
33	#[atom(CssAtomSet::Last)]
34	Last(T![Ident]),
35	#[atom(CssAtomSet::FirstExcept)]
36	FirstExcept(T![Ident]),
37}
38
39#[cfg(test)]
40mod tests {
41	use super::*;
42	use crate::CssAtomSet;
43	use css_parse::{assert_parse, assert_parse_error};
44
45	#[test]
46	fn size_test() {
47		assert_eq!(std::mem::size_of::<StringFunction>(), 68);
48		assert_eq!(std::mem::size_of::<StringKeyword>(), 16);
49	}
50
51	#[test]
52	fn test_writes() {
53		assert_parse!(CssAtomSet::ATOMS, StringFunction, "string(foo)");
54		assert_parse!(CssAtomSet::ATOMS, StringFunction, "string(foo,first)");
55	}
56
57	#[test]
58	fn test_errors() {
59		assert_parse_error!(CssAtomSet::ATOMS, StringFunction, "string(foo bar)");
60	}
61}
css_ast/functions/string_function.rs

css_ast/functions/
string_function.rs
