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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-19 00:47:55 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-19 00:47:55 +0000 |
commit | 26a029d407be480d791972afb5975cf62c9360a6 (patch) | |
tree | f435a8308119effd964b339f76abb83a57c29483 /servo/components/style/properties/shorthands/list.mako.rs | |
parent | Initial commit. (diff) | |
download | firefox-26a029d407be480d791972afb5975cf62c9360a6.tar.xz firefox-26a029d407be480d791972afb5975cf62c9360a6.zip |
Adding upstream version 124.0.1.upstream/124.0.1
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'servo/components/style/properties/shorthands/list.mako.rs')
-rw-r--r-- | servo/components/style/properties/shorthands/list.mako.rs | 137 |
1 files changed, 137 insertions, 0 deletions
diff --git a/servo/components/style/properties/shorthands/list.mako.rs b/servo/components/style/properties/shorthands/list.mako.rs new file mode 100644 index 0000000000..2e234e3d8f --- /dev/null +++ b/servo/components/style/properties/shorthands/list.mako.rs @@ -0,0 +1,137 @@ +/* This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this + * file, You can obtain one at https://mozilla.org/MPL/2.0/. */ + +<%namespace name="helpers" file="/helpers.mako.rs" /> + +<%helpers:shorthand name="list-style" + engines="gecko servo-2013 servo-2020" + sub_properties="list-style-position list-style-image list-style-type" + spec="https://drafts.csswg.org/css-lists/#propdef-list-style"> + use crate::properties::longhands::{list_style_image, list_style_position, list_style_type}; + use crate::values::specified::Image; + + pub fn parse_value<'i, 't>( + context: &ParserContext, + input: &mut Parser<'i, 't>, + ) -> Result<Longhands, ParseError<'i>> { + // `none` is ambiguous until we've finished parsing the shorthands, so we count the number + // of times we see it. + let mut nones = 0u8; + let (mut image, mut position, mut list_style_type, mut any) = (None, None, None, false); + loop { + if input.try_parse(|input| input.expect_ident_matching("none")).is_ok() { + nones = nones + 1; + if nones > 2 { + return Err(input.new_custom_error(SelectorParseErrorKind::UnexpectedIdent("none".into()))) + } + any = true; + continue + } + + if image.is_none() { + if let Ok(value) = input.try_parse(|input| list_style_image::parse(context, input)) { + image = Some(value); + any = true; + continue + } + } + + if position.is_none() { + if let Ok(value) = input.try_parse(|input| list_style_position::parse(context, input)) { + position = Some(value); + any = true; + continue + } + } + + // list-style-type must be checked the last, because it accepts + // arbitrary identifier for custom counter style, and thus may + // affect values of list-style-position. + if list_style_type.is_none() { + if let Ok(value) = input.try_parse(|input| list_style_type::parse(context, input)) { + list_style_type = Some(value); + any = true; + continue + } + } + break + } + + let position = unwrap_or_initial!(list_style_position, position); + + // If there are two `none`s, then we can't have a type or image; if there is one `none`, + // then we can't have both a type *and* an image; if there is no `none` then we're fine as + // long as we parsed something. + use self::list_style_type::SpecifiedValue as ListStyleType; + match (any, nones, list_style_type, image) { + (true, 2, None, None) => { + Ok(expanded! { + list_style_position: position, + list_style_image: Image::None, + list_style_type: ListStyleType::None, + }) + } + (true, 1, None, Some(image)) => { + Ok(expanded! { + list_style_position: position, + list_style_image: image, + list_style_type: ListStyleType::None, + }) + } + (true, 1, Some(list_style_type), None) => { + Ok(expanded! { + list_style_position: position, + list_style_image: Image::None, + list_style_type: list_style_type, + }) + } + (true, 1, None, None) => { + Ok(expanded! { + list_style_position: position, + list_style_image: Image::None, + list_style_type: ListStyleType::None, + }) + } + (true, 0, list_style_type, image) => { + Ok(expanded! { + list_style_position: position, + list_style_image: unwrap_or_initial!(list_style_image, image), + list_style_type: unwrap_or_initial!(list_style_type), + }) + } + _ => Err(input.new_custom_error(StyleParseErrorKind::UnspecifiedError)), + } + } + + impl<'a> ToCss for LonghandsToSerialize<'a> { + fn to_css<W>(&self, dest: &mut CssWriter<W>) -> fmt::Result where W: fmt::Write { + use longhands::list_style_position::SpecifiedValue as ListStylePosition; + use longhands::list_style_type::SpecifiedValue as ListStyleType; + use longhands::list_style_image::SpecifiedValue as ListStyleImage; + let mut have_one_non_initial_value = false; + if self.list_style_position != &ListStylePosition::Outside { + self.list_style_position.to_css(dest)?; + have_one_non_initial_value = true; + } + if self.list_style_image != &ListStyleImage::None { + if have_one_non_initial_value { + dest.write_char(' ')?; + } + self.list_style_image.to_css(dest)?; + have_one_non_initial_value = true; + } + if self.list_style_type != &ListStyleType::disc() { + if have_one_non_initial_value { + dest.write_char(' ')?; + } + self.list_style_type.to_css(dest)?; + have_one_non_initial_value = true; + } + if !have_one_non_initial_value { + self.list_style_position.to_css(dest)?; + } + Ok(()) + } + } +</%helpers:shorthand> |