css_ast/functions/
image_set_function.rs

1use crate::{Image, Resolution};
2use css_parse::{CommaSeparated, Function, T, function_set};
3use csskit_derives::{Parse, Peek, ToCursors, ToSpan, Visitable};
4
5function_set!(pub struct ImageSetFunctionName "image-set");
6
7function_set!(pub struct TypeFunctionName "type");
8
9/// <https://drafts.csswg.org/css-images-4/#funcdef-image-set>
10///
11/// ```text
12/// <image-set()> = image-set( <image-set-option># )
13/// <image-set-option> = [ <image> | <string> ] [ <resolution> || type(<string>) ]?
14/// ```
15#[derive(Parse, Peek, ToSpan, ToCursors, Visitable, Debug, Clone, PartialEq, Eq, PartialOrd, Ord, Hash)]
16#[cfg_attr(feature = "serde", derive(serde::Serialize))]
17#[visit(self)]
18pub struct ImageSetFunction<'a>(Function<ImageSetFunctionName, CommaSeparated<'a, ImageSetParams<'a>>>);
19
20#[derive(Parse, Peek, ToSpan, ToCursors, Debug, Clone, PartialEq, Eq, PartialOrd, Ord, Hash)]
21#[cfg_attr(feature = "serde", derive(serde::Serialize))]
22pub enum ImageSetParams<'a> {
23	Image(Image<'a>, Option<ResolutionOrType>),
24	String(T![String], Option<ResolutionOrType>),
25}
26
27#[derive(Parse, Peek, ToSpan, ToCursors, Debug, Clone, PartialEq, Eq, PartialOrd, Ord, Hash)]
28#[cfg_attr(feature = "serde", derive(serde::Serialize), serde())]
29pub enum ResolutionOrType {
30	Resolution(Resolution),
31	Type(Function<TypeFunctionName, T![String]>),
32}
33
34#[cfg(test)]
35mod tests {
36	use super::*;
37	use css_parse::assert_parse;
38
39	#[test]
40	fn size_test() {
41		assert_eq!(std::mem::size_of::<ImageSetFunction>(), 64);
42	}
43
44	#[test]
45	fn test_writes() {
46		assert_parse!(ImageSetFunction, "image-set('image.jpg'1x,'image.jpg'2x)");
47		assert_parse!(ImageSetFunction, "image-set(url('1.avif')type('image/avif'),url('2.jpg')type('image/jpeg'))");
48		assert_parse!(ImageSetFunction, "image-set(url(foo))");
49	}
50}
css_ast/functions/image_set_function.rs

css_ast/functions/
image_set_function.rs
