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style: Add a static_prefs implementation (#31351)

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This will eventually be part of the stylo crate and reduces the diff
between our verson of style and upstream's.
This commit is contained in:
Martin Robinson 2024-02-14 18:02:13 +01:00 • committed by GitHub
parent 31596eb10a
commit 61e778c8e8
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GPG key ID: B5690EEEBB952194
20 changed files with 200 additions and 147 deletions
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5
Cargo.lock generated
View file

@ -5625,6 +5625,10 @@ version = "1.1.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "a2eb9349b6444b326872e140eb1cf5e7c522154d69e7a0ffb0fb81c06b37543f"
[[package]]
name = "static_prefs"
version = "0.1.0"
[[package]]
name = "str-buf"
version = "1.0.6"
@ -5707,6 +5711,7 @@ dependencies = [
"smallbitvec",
"smallvec",
"static_assertions",
"static_prefs",
"string_cache",
"style_derive",
"style_traits",

1
components/style/Cargo.toml
View file

@ -73,6 +73,7 @@ servo_url = { path = "../url", optional = true }
smallbitvec = "2.3.0"
smallvec = "1.0"
static_assertions = "1.1"
static_prefs = { path = "../style_static_prefs" }
string_cache = { version = "0.8", optional = true }
style_derive = { path = "../style_derive" }
style_traits = { workspace = true }

12
components/style/driver.rs
View file

@ -63,10 +63,7 @@ fn with_pool_in_place_scope<'scope, R>(
/// See documentation of the pref for performance characteristics.
fn work_unit_max() -> usize {
#[cfg(feature = "gecko")]
return static_prefs::pref!("layout.css.stylo-work-unit-size") as usize;
#[cfg(feature = "servo")]
return 16;
static_prefs::pref!("layout.css.stylo-work-unit-size") as usize
}
/// Do a DOM traversal for top-down and (optionally) bottom-up processing, generic over `D`.
@ -127,12 +124,7 @@ where
discovered,
root.as_node().opaque(),
work_unit_max,
(|| {
#[cfg(feature = "gecko")]
return static_prefs::pref!("layout.css.stylo-local-work-queue.in-main-thread") as usize;
#[cfg(feature = "servo")]
return 32;
})(),
static_prefs::pref!("layout.css.stylo-local-work-queue.in-main-thread") as usize,
PerLevelTraversalData { current_dom_depth: root.depth() },
maybe_scope,
traversal,

14
components/style/font_face.rs
View file

@ -577,13 +577,6 @@ impl<'a, 'b, 'i> RuleBodyItemParser<'i, (), StyleParseErrorKind<'i>>
}
}
fn font_tech_enabled() -> bool {
#[cfg(feature = "gecko")]
return static_prefs::pref!("layout.css.font-tech.enabled");
#[cfg(feature = "servo")]
return false;
}
impl Parse for Source {
fn parse<'i, 't>(
context: &ParserContext,
@ -618,9 +611,10 @@ impl Parse for Source {
};
// Parse optional tech()
let tech_flags = if font_tech_enabled() && input
.try_parse(|input| input.expect_function_matching("tech"))
.is_ok()
let tech_flags = if static_prefs::pref!("layout.css.font-tech.enabled") &&
input
.try_parse(|input| input.expect_function_matching("tech"))
.is_ok()
{
input.parse_nested_block(|input| FontFaceSourceTechFlags::parse(context, input))?
} else {

7
components/style/parallel.rs
View file

@ -93,12 +93,7 @@ fn distribute_one_chunk<'a, 'scope, E, D>(
items,
traversal_root,
work_unit_max,
(|| {
#[cfg(feature = "gecko")]
return static_prefs::pref!("layout.css.stylo-local-work-queue.in-worker") as usize;
#[cfg(feature = "servo")]
return 0;
})(),
static_prefs::pref!("layout.css.stylo-local-work-queue.in-worker") as usize,
traversal_data,
Some(scope),
traversal,

9
components/style/properties/shorthands/ui.mako.rs
View file

@ -190,13 +190,6 @@ macro_rules! try_parse_one {
% endfor
}
fn scroll_driven_animations_enabled() -> bool {
#[cfg(feature = "gecko")]
return static_prefs::pref!("layout.css.scroll-driven-animations.enabled");
#[cfg(feature = "servo")]
return false;
}
fn parse_one_animation<'i, 't>(
context: &ParserContext,
input: &mut Parser<'i, 't>,
@ -221,7 +214,7 @@ macro_rules! try_parse_one {
try_parse_one!(context, input, fill_mode, animation_fill_mode);
try_parse_one!(context, input, play_state, animation_play_state);
try_parse_one!(context, input, name, animation_name);
if scroll_driven_animations_enabled() {
if static_prefs::pref!("layout.css.scroll-driven-animations.enabled") {
try_parse_one!(context, input, timeline, animation_timeline);
}

3
components/style/selector_map.rs
View file

@ -153,10 +153,7 @@ impl<T> SelectorMap<T> {
namespace_hash: HashMap::default(),
rare_pseudo_classes: SmallVec::new(),
other: SmallVec::new(),
#[cfg(feature = "gecko")]
bucket_attributes: static_prefs::pref!("layout.css.bucket-attribute-names.enabled"),
#[cfg(feature = "servo")]
bucket_attributes: false,
count: 0,
}
}

7
components/style/stylesheets/import_rule.rs
View file

@ -262,12 +262,7 @@ impl ImportRule {
.unwrap_or(ImportLayer::None)
};
#[cfg(feature = "gecko")]
let supports_enabled = static_prefs::pref!("layout.css.import-supports.enabled");
#[cfg(feature = "servo")]
let supports_enabled = false;
let supports = if !supports_enabled {
let supports = if !static_prefs::pref!("layout.css.import-supports.enabled") {
None
} else {
input

21
components/style/stylesheets/rule_parser.rs
View file

@ -5,7 +5,6 @@
//! Parsing of the stylesheet contents.
use crate::counter_style::{parse_counter_style_body, parse_counter_style_name_definition};
#[cfg(feature = "gecko")]
use crate::custom_properties::parse_name as parse_custom_property_name;
use crate::error_reporting::ContextualParseError;
use crate::font_face::parse_font_face_block;
@ -32,7 +31,6 @@ use crate::stylesheets::{
};
use crate::values::computed::font::FamilyName;
use crate::values::{CssUrl, CustomIdent, DashedIdent, KeyframesName};
#[cfg(feature = "gecko")]
use crate::Atom;
use crate::{Namespace, Prefix};
use cssparser::{
@ -455,10 +453,7 @@ impl<'a, 'b, 'i> NestedRuleParser<'a, 'b, 'i> {
if !self.context.rule_types.contains(CssRuleType::Style) {
return true;
}
#[cfg(feature = "gecko")]
return static_prefs::pref!("layout.css.nesting.enabled");
#[cfg(feature = "servo")]
return false;
static_prefs::pref!("layout.css.nesting.enabled")
}
fn nest_for_rule<R>(&mut self, rule_type: CssRuleType, cb: impl FnOnce(&mut Self) -> R) -> R {
@ -520,16 +515,6 @@ impl<'a, 'b, 'i> NestedRuleParser<'a, 'b, 'i> {
}
}
fn container_queries_enabled() -> bool {
#[cfg(feature = "gecko")]
return static_prefs::pref!("layout.css.container-queries.enabled");
#[cfg(feature = "servo")]
return servo_config::prefs::pref_map()
.get("layout.container-queries.enabled")
.as_bool()
.unwrap_or(false);
}
impl<'a, 'b, 'i> AtRuleParser<'i> for NestedRuleParser<'a, 'b, 'i> {
type Prelude = AtRulePrelude;
type AtRule = ();
@ -556,7 +541,7 @@ impl<'a, 'b, 'i> AtRuleParser<'i> for NestedRuleParser<'a, 'b, 'i> {
"font-face" => {
AtRulePrelude::FontFace
},
"container" if container_queries_enabled() => {
"container" if static_prefs::pref!("layout.css.container-queries.enabled") => {
let condition = Arc::new(ContainerCondition::parse(self.context, input)?);
AtRulePrelude::Container(condition)
},
@ -572,7 +557,6 @@ impl<'a, 'b, 'i> AtRuleParser<'i> for NestedRuleParser<'a, 'b, 'i> {
let family_names = parse_family_name_list(self.context, input)?;
AtRulePrelude::FontFeatureValues(family_names)
},
#[cfg(feature = "gecko")]
"font-palette-values" if static_prefs::pref!("layout.css.font-palette.enabled") => {
let name = DashedIdent::parse(self.context, input)?;
AtRulePrelude::FontPaletteValues(name)
@ -602,7 +586,6 @@ impl<'a, 'b, 'i> AtRuleParser<'i> for NestedRuleParser<'a, 'b, 'i> {
input.try_parse(|i| PageSelectors::parse(self.context, i)).unwrap_or_default()
)
},
#[cfg(feature = "gecko")]
"property" if static_prefs::pref!("layout.css.properties-and-values.enabled") => {
let name = input.expect_ident_cloned()?;
let name = parse_custom_property_name(&name).map_err(|_| {

2
components/style/stylesheets/supports_rule.rs
View file

@ -170,12 +170,10 @@ impl SupportsCondition {
input.slice_from(pos).to_owned()
)))
},
#[cfg(feature = "gecko")]
"font-format" if static_prefs::pref!("layout.css.font-tech.enabled") => {
let kw = FontFaceSourceFormatKeyword::parse(input)?;
Ok(SupportsCondition::FontFormat(kw))
},
#[cfg(feature = "gecko")]
"font-tech" if static_prefs::pref!("layout.css.font-tech.enabled") => {
let flag = FontFaceSourceTechFlags::parse_one(input)?;
Ok(SupportsCondition::FontTech(flag))

5
components/style/values/computed/font.rs
View file

@ -517,10 +517,7 @@ pub enum SingleFontFamily {
}
fn system_ui_enabled(_: &ParserContext) -> bool {
#[cfg(feature = "gecko")]
return static_prefs::pref!("layout.css.system-ui.enabled");
#[cfg(feature = "servo")]
return false;
static_prefs::pref!("layout.css.system-ui.enabled")
}
/// A generic font-family name.

5
components/style/values/mod.rs
View file

@ -93,10 +93,7 @@ where
}
fn nan_inf_enabled() -> bool {
#[cfg(feature = "gecko")]
return static_prefs::pref!("layout.css.nan-inf.enabled");
#[cfg(feature = "servo")]
return false;
static_prefs::pref!("layout.css.nan-inf.enabled")
}
/// Serialize a number with calc, and NaN/infinity handling (if enabled)

11
components/style/values/resolved/counters.rs
View file

@ -7,14 +7,6 @@
use super::{Context, ToResolvedValue};
use crate::values::computed;
#[inline]
fn allow_element_content_none() -> bool {
#[cfg(feature = "gecko")]
return static_prefs::pref!("layout.css.element-content-none.enabled");
#[cfg(feature = "servo")]
return false;
}
/// https://drafts.csswg.org/css-content/#content-property
///
/// We implement this at resolved value time because otherwise it causes us to
@ -43,7 +35,8 @@ impl ToResolvedValue for computed::Content {
// Ditto for non-pseudo elements if the pref is disabled.
Self::None
if (is_pseudo && !is_before_or_after && !is_marker) ||
(!is_pseudo && !allow_element_content_none()) =>
(!is_pseudo &&
!static_prefs::pref!("layout.css.element-content-none.enabled")) =>
{
Self::Normal
},

1
components/style/values/specified/box.rs
View file

@ -1832,7 +1832,6 @@ impl Parse for Overflow {
"-moz-hidden-unscrollable" if static_prefs::pref!("layout.css.overflow-moz-hidden-unscrollable.enabled") => {
Overflow::Clip
},
#[cfg(feature = "gecko")]
"overlay" if static_prefs::pref!("layout.css.overflow-overlay.enabled") => {
Overflow::Auto
},

37
components/style/values/specified/calc.rs
View file

@ -21,38 +21,11 @@ use style_traits::values::specified::AllowedNumericType;
use style_traits::{CssWriter, ParseError, SpecifiedValueInfo, StyleParseErrorKind, ToCss};
fn trig_enabled() -> bool {
#[cfg(feature = "gecko")]
return static_prefs::pref!("layout.css.trig.enabled");
#[cfg(feature = "servo")]
return false;
static_prefs::pref!("layout.css.trig.enabled")
}
fn nan_inf_enabled() -> bool {
#[cfg(feature = "gecko")]
return static_prefs::pref!("layout.css.nan-inf.enabled");
#[cfg(feature = "servo")]
return false;
}
fn round_enabled() -> bool {
#[cfg(feature = "gecko")]
return static_prefs::pref!("layout.css.round.enabled");
#[cfg(feature = "servo")]
return false;
}
fn mod_rem_enabled() -> bool {
#[cfg(feature = "gecko")]
return static_prefs::pref!("layout.css.mod-rem.enabled");
#[cfg(feature = "servo")]
return false;
}
fn exp_enabled() -> bool {
#[cfg(feature = "gecko")]
return static_prefs::pref!("layout.css.exp.enabled");
#[cfg(feature = "servo")]
return false;
static_prefs::pref!("layout.css.nan-inf.enabled")
}
/// The name of the mathematical function that we're parsing.
@ -929,11 +902,11 @@ impl CalcNode {
} else if matches!(function, Sin | Cos | Tan | Asin | Acos | Atan | Atan2) {
trig_enabled()
} else if matches!(function, Round) {
round_enabled()
static_prefs::pref!("layout.css.round.enabled")
} else if matches!(function, Mod | Rem) {
mod_rem_enabled()
static_prefs::pref!("layout.css.mod-rem.enabled")
} else if matches!(function, Pow | Sqrt | Hypot | Log | Exp) {
exp_enabled()
static_prefs::pref!("layout.css.exp.enabled")
} else {
true
};

24
components/style/values/specified/color.rs
View file

@ -25,22 +25,6 @@ use style_traits::{SpecifiedValueInfo, ToCss, ValueParseErrorKind};
/// A specified color-mix().
pub type ColorMix = GenericColorMix<Color, Percentage>;
#[inline]
fn allow_color_mix() -> bool {
#[cfg(feature = "gecko")]
return static_prefs::pref!("layout.css.color-mix.enabled");
#[cfg(feature = "servo")]
return true;
}
#[inline]
fn allow_more_color_4() -> bool {
#[cfg(feature = "gecko")]
return static_prefs::pref!("layout.css.more_color_4.enabled");
#[cfg(feature = "servo")]
return true;
}
impl ColorMix {
fn parse<'i, 't>(
context: &ParserContext,
@ -48,7 +32,7 @@ impl ColorMix {
preserve_authored: PreserveAuthored,
) -> Result<Self, ParseError<'i>> {
let enabled =
context.chrome_rules_enabled() || allow_color_mix();
context.chrome_rules_enabled() || static_prefs::pref!("layout.css.color-mix.enabled");
if !enabled {
return Err(input.new_custom_error(StyleParseErrorKind::UnspecifiedError));
@ -639,7 +623,7 @@ impl Color {
);
let is_color_function =
absolute.color.flags.contains(ColorFlags::AS_COLOR_FUNCTION);
let pref_enabled = allow_more_color_4();
let pref_enabled = static_prefs::pref!("layout.css.more_color_4.enabled");
(is_legacy_color && !is_color_function) || pref_enabled
};
@ -971,10 +955,10 @@ impl SpecifiedValueInfo for Color {
"currentColor",
"transparent",
]);
if allow_color_mix() {
if static_prefs::pref!("layout.css.color-mix.enabled") {
f(&["color-mix"]);
}
if allow_more_color_4() {
if static_prefs::pref!("layout.css.more_color_4.enabled") {
f(&["color", "lab", "lch", "oklab", "oklch"]);
}
}

3
components/style/values/specified/font.rs
View file

@ -720,10 +720,7 @@ impl Parse for FontSizeAdjust {
) -> Result<Self, ParseError<'i>> {
let location = input.current_source_location();
if let Ok(ident) = input.try_parse(|i| i.expect_ident_cloned()) {
#[cfg(feature = "gecko")]
let basis_enabled = static_prefs::pref!("layout.css.font-size-adjust.basis.enabled");
#[cfg(feature = "servo")]
let basis_enabled = false;
let basis = match_ignore_ascii_case! { &ident,
"none" => return Ok(Self::None),
// Check for size adjustment basis keywords if enabled.

11
components/style/values/specified/motion.rs
View file

@ -23,15 +23,6 @@ pub type OffsetPath = generics::GenericOffsetPath<RayFunction>;
/// The specified value of `offset-position`.
pub type OffsetPosition = generics::GenericOffsetPosition<HorizontalPosition, VerticalPosition>;
#[cfg(feature = "gecko")]
fn is_ray_enabled() -> bool {
static_prefs::pref!("layout.css.motion-path-ray.enabled")
}
#[cfg(feature = "servo")]
fn is_ray_enabled() -> bool {
false
}
impl Parse for RayFunction {
fn parse<'i, 't>(
context: &ParserContext,
@ -39,7 +30,7 @@ impl Parse for RayFunction {
) -> Result<Self, ParseError<'i>> {
use crate::values::specified::PositionOrAuto;
if !is_ray_enabled() {
if !static_prefs::pref!("layout.css.motion-path-ray.enabled") {
return Err(input.new_custom_error(StyleParseErrorKind::UnspecifiedError));
}

7
components/style_static_prefs/Cargo.toml Normal file
View file

@ -0,0 +1,7 @@
[package]
name = "static_prefs"
version = "0.1.0"
edition = "2021"
authors = ["The Servo Project Developers"]
license = "MPL-2.0"
publish = false

162
components/style_static_prefs/src/lib.rs Normal file
View file

@ -0,0 +1,162 @@
/* 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/. */
//! A list of static preferences exposed to the style crate. These should
//! be kept sync with the preferences used by the style.
#[macro_export]
macro_rules! pref {
("browser.display.permit_backplate") => {
false
};
("browser.display.use_document_fonts") => {
false
};
("dom.customHighlightAPI.enabled") => {
false
};
("dom.element.popover.enabled") => {
false
};
("gfx.font_rendering.opentype_svg.enabled") => {
false
};
("layout.css.color-mix.enabled") => {
true
};
("layout.css.contain-intrinsic-size.enabled") => {
false
};
("layout.css.container-queries.enabled") => {
false
};
("layout.css.content-visibility.enabled") => {
false
};
("layout.css.control-characters.visible") => {
false
};
("layout.css.cross-fade.enabled") => {
false
};
("layout.css.element-content-none.enabled") => {
false
};
("layout.css.fit-content-function.enabled") => {
false
};
("layout.css.font-palette.enabled") => {
false
};
("layout.css.font-tech.enabled") => {
false
};
("layout.css.font-variant-emoji.enabled") => {
false
};
("layout.css.font-variations.enabled") => {
false
};
("layout.css.forced-color-adjust.enabled") => {
false
};
("layout.css.forced-colors.enabled") => {
false
};
("layout.css.grid-template-masonry-value.enabled") => {
false
};
("layout.css.has-selector.enabled") => {
false
};
("layout.css.import-supports.enabled") => {
false
};
("layout.css.inverted-colors.enabled") => {
false
};
("layout.css.marker.restricted") => {
false
};
("layout.css.math-depth.enabled") => {
false
};
("layout.css.math-style.enabled") => {
false
};
("layout.css.more_color_4.enabled") => {
true
};
("layout.css.motion-path-offset-position.enabled") => {
false
};
("layout.css.motion-path-ray.enabled") => {
false
};
("layout.css.moz-control-character-visibility.enabled") => {
false
};
("layout.css.nesting.enabled") => {
false
};
("layout.css.overflow-moz-hidden-unscrollable.enabled") => {
false
};
("layout.css.overflow-overlay.enabled") => {
false
};
("layout.css.page-orientation.enabled") => {
false
};
("layout.css.prefers-contrast.enabled") => {
false
};
("layout.css.prefers-reduced-transparency.enabled") => {
false
};
("layout.css.properties-and-values.enabled") => {
false
};
("layout.css.scroll-driven-animations.enabled") => {
false
};
("layout.css.size-adjust.enabled") => {
false
};
("layout.css.stylo-local-work-queue.in-main-thread") => {
32
};
("layout.css.stylo-local-work-queue.in-worker") => {
0
};
("layout.css.stylo-threads") => {
false
};
("layout.css.stylo-work-unit-size") => {
16
};
("layout.css.system-ui.enabled") => {
false
};
("layout.css.nan-inf.enabled") => {
false
};
("layout.css.trig.enabled") => {
false
};
("layout.css.round.enabled") => {
false
};
("layout.css.mod-rem.enabled") => {
false
};
("layout.css.exp.enabled") => {
false
};
("layout.css.bucket-attribute-names.enabled") => {
false
};
("layout.css.font-size-adjust.basis.enabled") => {
false
};
}