third_party/blink/renderer/core/css/properties/longhands/longhands_custom.cc

// Copyright 2019 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#include "third_party/blink/renderer/core/css/basic_shape_functions.h"
#include "third_party/blink/renderer/core/css/css_axis_value.h"
#include "third_party/blink/renderer/core/css/css_color_value.h"
#include "third_party/blink/renderer/core/css/css_counter_value.h"
#include "third_party/blink/renderer/core/css/css_cursor_image_value.h"
#include "third_party/blink/renderer/core/css/css_custom_ident_value.h"
#include "third_party/blink/renderer/core/css/css_font_feature_value.h"
#include "third_party/blink/renderer/core/css/css_font_variation_value.h"
#include "third_party/blink/renderer/core/css/css_function_value.h"
#include "third_party/blink/renderer/core/css/css_grid_template_areas_value.h"
#include "third_party/blink/renderer/core/css/css_identifier_value.h"
#include "third_party/blink/renderer/core/css/css_layout_function_value.h"
#include "third_party/blink/renderer/core/css/css_numeric_literal_value.h"
#include "third_party/blink/renderer/core/css/css_primitive_value.h"
#include "third_party/blink/renderer/core/css/css_primitive_value_mappings.h"
#include "third_party/blink/renderer/core/css/css_quad_value.h"
#include "third_party/blink/renderer/core/css/css_reflect_value.h"
#include "third_party/blink/renderer/core/css/css_resolution_units.h"
#include "third_party/blink/renderer/core/css/css_string_value.h"
#include "third_party/blink/renderer/core/css/css_uri_value.h"
#include "third_party/blink/renderer/core/css/css_value_list.h"
#include "third_party/blink/renderer/core/css/css_value_pair.h"
#include "third_party/blink/renderer/core/css/parser/css_parser_context.h"
#include "third_party/blink/renderer/core/css/parser/css_parser_local_context.h"
#include "third_party/blink/renderer/core/css/parser/css_parser_mode.h"
#include "third_party/blink/renderer/core/css/parser/css_parser_token.h"
#include "third_party/blink/renderer/core/css/parser/css_parser_token_range.h"
#include "third_party/blink/renderer/core/css/parser/css_property_parser.h"
#include "third_party/blink/renderer/core/css/parser/css_property_parser_helpers.h"
#include "third_party/blink/renderer/core/css/parser/font_variant_east_asian_parser.h"
#include "third_party/blink/renderer/core/css/parser/font_variant_ligatures_parser.h"
#include "third_party/blink/renderer/core/css/parser/font_variant_numeric_parser.h"
#include "third_party/blink/renderer/core/css/properties/computed_style_utils.h"
#include "third_party/blink/renderer/core/css/properties/css_parsing_utils.h"
#include "third_party/blink/renderer/core/css/properties/longhands.h"
#include "third_party/blink/renderer/core/css/resolver/style_builder_converter.h"
#include "third_party/blink/renderer/core/css/resolver/style_resolver_state.h"
#include "third_party/blink/renderer/core/css/style_engine.h"
#include "third_party/blink/renderer/core/css/zoom_adjusted_pixel_value.h"
#include "third_party/blink/renderer/core/css_value_keywords.h"
#include "third_party/blink/renderer/core/frame/settings.h"
#include "third_party/blink/renderer/core/frame/web_feature.h"
#include "third_party/blink/renderer/core/layout/layout_box.h"
#include "third_party/blink/renderer/core/layout/layout_object.h"
#include "third_party/blink/renderer/core/style/computed_style.h"
#include "third_party/blink/renderer/core/style/grid_area.h"
#include "third_party/blink/renderer/core/style/reference_clip_path_operation.h"
#include "third_party/blink/renderer/core/style/shape_clip_path_operation.h"
#include "third_party/blink/renderer/core/style_property_shorthand.h"
#include "third_party/blink/renderer/platform/geometry/length.h"
#include "third_party/blink/renderer/platform/instrumentation/use_counter.h"
#include "third_party/blink/renderer/platform/runtime_enabled_features.h"

// Implementations of methods in Longhand subclasses that aren't generated.

namespace blink {
namespace css_longhand {

const CSSValue* AlignContent::ParseSingleValue(
    CSSParserTokenRange& range,
    const CSSParserContext& context,
    const CSSParserLocalContext&) const {
  return css_parsing_utils::ConsumeContentDistributionOverflowPosition(
      range, css_parsing_utils::IsContentPositionKeyword);
}

const CSSValue* AlignContent::CSSValueFromComputedStyleInternal(
    const ComputedStyle& style,
    const SVGComputedStyle&,
    const LayoutObject*,
    bool allow_visited_style) const {
  return ComputedStyleUtils::
      ValueForContentPositionAndDistributionWithOverflowAlignment(
          style.AlignContent());
}

const CSSValue* AlignItems::ParseSingleValue(
    CSSParserTokenRange& range,
    const CSSParserContext& context,
    const CSSParserLocalContext&) const {
  // align-items property does not allow the 'auto' value.
  if (css_property_parser_helpers::IdentMatches<CSSValueID::kAuto>(
          range.Peek().Id()))
    return nullptr;
  return css_parsing_utils::ConsumeSelfPositionOverflowPosition(
      range, css_parsing_utils::IsSelfPositionKeyword);
}

const CSSValue* AlignItems::CSSValueFromComputedStyleInternal(
    const ComputedStyle& style,
    const SVGComputedStyle&,
    const LayoutObject*,
    bool allow_visited_style) const {
  return ComputedStyleUtils::ValueForItemPositionWithOverflowAlignment(
      style.AlignItems());
}

const CSSValue* AlignSelf::ParseSingleValue(
    CSSParserTokenRange& range,
    const CSSParserContext& context,
    const CSSParserLocalContext&) const {
  return css_parsing_utils::ConsumeSelfPositionOverflowPosition(
      range, css_parsing_utils::IsSelfPositionKeyword);
}

const CSSValue* AlignSelf::CSSValueFromComputedStyleInternal(
    const ComputedStyle& style,
    const SVGComputedStyle&,
    const LayoutObject*,
    bool allow_visited_style) const {
  return ComputedStyleUtils::ValueForItemPositionWithOverflowAlignment(
      style.AlignSelf());
}
const CSSValue* AlignmentBaseline::CSSValueFromComputedStyleInternal(
    const ComputedStyle& style,
    const SVGComputedStyle& svg_style,
    const LayoutObject*,
    bool allow_visited_style) const {
  return CSSIdentifierValue::Create(svg_style.AlignmentBaseline());
}

const CSSValue* AnimationDelay::ParseSingleValue(
    CSSParserTokenRange& range,
    const CSSParserContext&,
    const CSSParserLocalContext&) const {
  return css_property_parser_helpers::ConsumeCommaSeparatedList(
      css_property_parser_helpers::ConsumeTime, range, kValueRangeAll);
}

const CSSValue* AnimationDelay::CSSValueFromComputedStyleInternal(
    const ComputedStyle& style,
    const SVGComputedStyle&,
    const LayoutObject*,
    bool allow_visited_style) const {
  return ComputedStyleUtils::ValueForAnimationDelay(style.Animations());
}

const CSSValue* AnimationDelay::InitialValue() const {
  DEFINE_STATIC_LOCAL(
      const Persistent<CSSValue>, value,
      (CSSNumericLiteralValue::Create(CSSTimingData::InitialDelay(),
                                      CSSPrimitiveValue::UnitType::kSeconds)));
  return value;
}

const CSSValue* AnimationDirection::ParseSingleValue(
    CSSParserTokenRange& range,
    const CSSParserContext&,
    const CSSParserLocalContext&) const {
  return css_property_parser_helpers::ConsumeCommaSeparatedList(
      css_property_parser_helpers::ConsumeIdent<
          CSSValueID::kNormal, CSSValueID::kAlternate, CSSValueID::kReverse,
          CSSValueID::kAlternateReverse>,
      range);
}

const CSSValue* AnimationDirection::CSSValueFromComputedStyleInternal(
    const ComputedStyle& style,
    const SVGComputedStyle&,
    const LayoutObject*,
    bool allow_visited_style) const {
  CSSValueList* list = CSSValueList::CreateCommaSeparated();
  const CSSAnimationData* animation_data = style.Animations();
  if (animation_data) {
    for (wtf_size_t i = 0; i < animation_data->DirectionList().size(); ++i) {
      list->Append(*ComputedStyleUtils::ValueForAnimationDirection(
          animation_data->DirectionList()[i]));
    }
  } else {
    list->Append(*InitialValue());
  }
  return list;
}

const CSSValue* AnimationDirection::InitialValue() const {
  DEFINE_STATIC_LOCAL(const Persistent<CSSValue>, value,
                      (CSSIdentifierValue::Create(CSSValueID::kNormal)));
  return value;
}

const CSSValue* AnimationDuration::ParseSingleValue(
    CSSParserTokenRange& range,
    const CSSParserContext&,
    const CSSParserLocalContext&) const {
  return css_property_parser_helpers::ConsumeCommaSeparatedList(
      css_property_parser_helpers::ConsumeTime, range, kValueRangeNonNegative);
}

const CSSValue* AnimationDuration::CSSValueFromComputedStyleInternal(
    const ComputedStyle& style,
    const SVGComputedStyle&,
    const LayoutObject*,
    bool allow_visited_style) const {
  return ComputedStyleUtils::ValueForAnimationDuration(style.Animations());
}

const CSSValue* AnimationDuration::InitialValue() const {
  DEFINE_STATIC_LOCAL(
      const Persistent<CSSValue>, value,
      (CSSNumericLiteralValue::Create(CSSTimingData::InitialDuration(),
                                      CSSPrimitiveValue::UnitType::kSeconds)));
  return value;
}

const CSSValue* AnimationFillMode::ParseSingleValue(
    CSSParserTokenRange& range,
    const CSSParserContext&,
    const CSSParserLocalContext&) const {
  return css_property_parser_helpers::ConsumeCommaSeparatedList(
      css_property_parser_helpers::ConsumeIdent<
          CSSValueID::kNone, CSSValueID::kForwards, CSSValueID::kBackwards,
          CSSValueID::kBoth>,
      range);
}

const CSSValue* AnimationFillMode::CSSValueFromComputedStyleInternal(
    const ComputedStyle& style,
    const SVGComputedStyle&,
    const LayoutObject*,
    bool allow_visited_style) const {
  CSSValueList* list = CSSValueList::CreateCommaSeparated();
  const CSSAnimationData* animation_data = style.Animations();
  if (animation_data) {
    for (wtf_size_t i = 0; i < animation_data->FillModeList().size(); ++i) {
      list->Append(*ComputedStyleUtils::ValueForAnimationFillMode(
          animation_data->FillModeList()[i]));
    }
  } else {
    list->Append(*InitialValue());
  }
  return list;
}

const CSSValue* AnimationFillMode::InitialValue() const {
  DEFINE_STATIC_LOCAL(const Persistent<CSSValue>, value,
                      (CSSIdentifierValue::Create(CSSValueID::kNone)));
  return value;
}

const CSSValue* AnimationIterationCount::ParseSingleValue(
    CSSParserTokenRange& range,
    const CSSParserContext&,
    const CSSParserLocalContext&) const {
  return css_property_parser_helpers::ConsumeCommaSeparatedList(
      css_parsing_utils::ConsumeAnimationIterationCount, range);
}

const CSSValue* AnimationIterationCount::CSSValueFromComputedStyleInternal(
    const ComputedStyle& style,
    const SVGComputedStyle&,
    const LayoutObject*,
    bool allow_visited_style) const {
  CSSValueList* list = CSSValueList::CreateCommaSeparated();
  const CSSAnimationData* animation_data = style.Animations();
  if (animation_data) {
    for (wtf_size_t i = 0; i < animation_data->IterationCountList().size();
         ++i) {
      list->Append(*ComputedStyleUtils::ValueForAnimationIterationCount(
          animation_data->IterationCountList()[i]));
    }
  } else {
    list->Append(*InitialValue());
  }
  return list;
}

const CSSValue* AnimationIterationCount::InitialValue() const {
  DEFINE_STATIC_LOCAL(
      const Persistent<CSSValue>, value,
      (CSSNumericLiteralValue::Create(CSSAnimationData::InitialIterationCount(),
                                      CSSPrimitiveValue::UnitType::kNumber)));
  return value;
}

const CSSValue* AnimationName::ParseSingleValue(
    CSSParserTokenRange& range,
    const CSSParserContext& context,
    const CSSParserLocalContext& local_context) const {
  // Allow quoted name if this is an alias property.
  return css_property_parser_helpers::ConsumeCommaSeparatedList(
      css_parsing_utils::ConsumeAnimationName, range, context,
      local_context.UseAliasParsing());
}

const CSSValue* AnimationName::CSSValueFromComputedStyleInternal(
    const ComputedStyle& style,
    const SVGComputedStyle&,
    const LayoutObject*,
    bool allow_visited_style) const {
  CSSValueList* list = CSSValueList::CreateCommaSeparated();
  const CSSAnimationData* animation_data = style.Animations();
  if (animation_data) {
    for (wtf_size_t i = 0; i < animation_data->NameList().size(); ++i) {
      list->Append(*MakeGarbageCollected<CSSCustomIdentValue>(
          animation_data->NameList()[i]));
    }
  } else {
    list->Append(*InitialValue());
  }
  return list;
}

const CSSValue* AnimationName::InitialValue() const {
  DEFINE_STATIC_LOCAL(const Persistent<CSSValue>, value,
                      (CSSIdentifierValue::Create(CSSValueID::kNone)));
  return value;
}

const CSSValue* AnimationPlayState::ParseSingleValue(
    CSSParserTokenRange& range,
    const CSSParserContext&,
    const CSSParserLocalContext&) const {
  return css_property_parser_helpers::ConsumeCommaSeparatedList(
      css_property_parser_helpers::ConsumeIdent<CSSValueID::kRunning,
                                                CSSValueID::kPaused>,
      range);
}

const CSSValue* AnimationPlayState::CSSValueFromComputedStyleInternal(
    const ComputedStyle& style,
    const SVGComputedStyle&,
    const LayoutObject*,
    bool allow_visited_style) const {
  CSSValueList* list = CSSValueList::CreateCommaSeparated();
  const CSSAnimationData* animation_data = style.Animations();
  if (animation_data) {
    for (wtf_size_t i = 0; i < animation_data->PlayStateList().size(); ++i) {
      list->Append(*ComputedStyleUtils::ValueForAnimationPlayState(
          animation_data->PlayStateList()[i]));
    }
  } else {
    list->Append(*InitialValue());
  }
  return list;
}

const CSSValue* AnimationPlayState::InitialValue() const {
  DEFINE_STATIC_LOCAL(const Persistent<CSSValue>, value,
                      (CSSIdentifierValue::Create(CSSValueID::kRunning)));
  return value;
}

const CSSValue* AnimationTimingFunction::ParseSingleValue(
    CSSParserTokenRange& range,
    const CSSParserContext&,
    const CSSParserLocalContext&) const {
  return css_property_parser_helpers::ConsumeCommaSeparatedList(
      css_parsing_utils::ConsumeAnimationTimingFunction, range);
}

const CSSValue* AnimationTimingFunction::CSSValueFromComputedStyleInternal(
    const ComputedStyle& style,
    const SVGComputedStyle&,
    const LayoutObject*,
    bool allow_visited_style) const {
  return ComputedStyleUtils::ValueForAnimationTimingFunction(
      style.Animations());
}

const CSSValue* AnimationTimingFunction::InitialValue() const {
  DEFINE_STATIC_LOCAL(const Persistent<CSSValue>, value,
                      (CSSIdentifierValue::Create(CSSValueID::kEase)));
  return value;
}

const CSSValue* BackdropFilter::ParseSingleValue(
    CSSParserTokenRange& range,
    const CSSParserContext& context,
    const CSSParserLocalContext&) const {
  return css_property_parser_helpers::ConsumeFilterFunctionList(range, context);
}

const CSSValue* BackdropFilter::CSSValueFromComputedStyleInternal(
    const ComputedStyle& style,
    const SVGComputedStyle&,
    const LayoutObject*,
    bool allow_visited_style) const {
  return ComputedStyleUtils::ValueForFilter(style, style.BackdropFilter());
}
const CSSValue* BackfaceVisibility::CSSValueFromComputedStyleInternal(
    const ComputedStyle& style,
    const SVGComputedStyle&,
    const LayoutObject*,
    bool allow_visited_style) const {
  return CSSIdentifierValue::Create(
      (style.BackfaceVisibility() == EBackfaceVisibility::kHidden)
          ? CSSValueID::kHidden
          : CSSValueID::kVisible);
}

const CSSValue* BackgroundAttachment::ParseSingleValue(
    CSSParserTokenRange& range,
    const CSSParserContext&,
    const CSSParserLocalContext&) const {
  return css_property_parser_helpers::ConsumeCommaSeparatedList(
      css_parsing_utils::ConsumeBackgroundAttachment, range);
}

const CSSValue* BackgroundAttachment::CSSValueFromComputedStyleInternal(
    const ComputedStyle& style,
    const SVGComputedStyle&,
    const LayoutObject*,
    bool allow_visited_style) const {
  CSSValueList* list = CSSValueList::CreateCommaSeparated();
  for (const FillLayer* curr_layer = &style.BackgroundLayers(); curr_layer;
       curr_layer = curr_layer->Next())
    list->Append(*CSSIdentifierValue::Create(curr_layer->Attachment()));
  return list;
}

const CSSValue* BackgroundBlendMode::ParseSingleValue(
    CSSParserTokenRange& range,
    const CSSParserContext&,
    const CSSParserLocalContext&) const {
  return css_property_parser_helpers::ConsumeCommaSeparatedList(
      css_parsing_utils::ConsumeBackgroundBlendMode, range);
}

const CSSValue* BackgroundBlendMode::CSSValueFromComputedStyleInternal(
    const ComputedStyle& style,
    const SVGComputedStyle&,
    const LayoutObject*,
    bool allow_visited_style) const {
  CSSValueList* list = CSSValueList::CreateCommaSeparated();
  for (const FillLayer* curr_layer = &style.BackgroundLayers(); curr_layer;
       curr_layer = curr_layer->Next())
    list->Append(*CSSIdentifierValue::Create(curr_layer->GetBlendMode()));
  return list;
}

const CSSValue* BackgroundClip::ParseSingleValue(
    CSSParserTokenRange& range,
    const CSSParserContext&,
    const CSSParserLocalContext& local_context) const {
  return css_parsing_utils::ParseBackgroundBox(
      range, local_context, css_parsing_utils::AllowTextValue::kAllow);
}

const CSSValue* BackgroundClip::CSSValueFromComputedStyleInternal(
    const ComputedStyle& style,
    const SVGComputedStyle&,
    const LayoutObject*,
    bool allow_visited_style) const {
  CSSValueList* list = CSSValueList::CreateCommaSeparated();
  const FillLayer* curr_layer = &style.BackgroundLayers();
  for (; curr_layer; curr_layer = curr_layer->Next()) {
    EFillBox box = curr_layer->Clip();
    list->Append(*CSSIdentifierValue::Create(box));
  }
  return list;
}

const CSSValue* BackgroundColor::ParseSingleValue(
    CSSParserTokenRange& range,
    const CSSParserContext& context,
    const CSSParserLocalContext&) const {
  return css_property_parser_helpers::ConsumeColor(
      range, context.Mode(), IsQuirksModeBehavior(context.Mode()));
}

const blink::Color BackgroundColor::ColorIncludingFallback(
    bool visited_link,
    const ComputedStyle& style) const {
  DCHECK(!visited_link);
  return style.BackgroundColor().Resolve(style.GetColor());
}

const CSSValue* BackgroundColor::CSSValueFromComputedStyleInternal(
    const ComputedStyle& style,
    const SVGComputedStyle&,
    const LayoutObject*,
    bool allow_visited_style) const {
  if (allow_visited_style) {
    return cssvalue::CSSColorValue::Create(
        style.VisitedDependentColor(*this).Rgb());
  }

  return ComputedStyleUtils::CurrentColorOrValidColor(style,
                                                      style.BackgroundColor());
}

const CSSValue* BackgroundImage::ParseSingleValue(
    CSSParserTokenRange& range,
    const CSSParserContext& context,
    const CSSParserLocalContext&) const {
  return css_property_parser_helpers::ConsumeCommaSeparatedList(
      css_property_parser_helpers::ConsumeImageOrNone, range, &context);
}

const CSSValue* BackgroundImage::CSSValueFromComputedStyleInternal(
    const ComputedStyle& style,
    const SVGComputedStyle&,
    const LayoutObject*,
    bool allow_visited_style) const {
  const FillLayer& fill_layer = style.BackgroundLayers();
  return ComputedStyleUtils::BackgroundImageOrWebkitMaskImage(
      style, allow_visited_style, fill_layer);
}

const CSSValue* BackgroundOrigin::ParseSingleValue(
    CSSParserTokenRange& range,
    const CSSParserContext&,
    const CSSParserLocalContext& local_context) const {
  return css_parsing_utils::ParseBackgroundBox(
      range, local_context, css_parsing_utils::AllowTextValue::kForbid);
}

const CSSValue* BackgroundOrigin::CSSValueFromComputedStyleInternal(
    const ComputedStyle& style,
    const SVGComputedStyle&,
    const LayoutObject*,
    bool allow_visited_style) const {
  CSSValueList* list = CSSValueList::CreateCommaSeparated();
  const FillLayer* curr_layer = &style.BackgroundLayers();
  for (; curr_layer; curr_layer = curr_layer->Next()) {
    EFillBox box = curr_layer->Origin();
    list->Append(*CSSIdentifierValue::Create(box));
  }
  return list;
}

const CSSValue* BackgroundPositionX::ParseSingleValue(
    CSSParserTokenRange& range,
    const CSSParserContext& context,
    const CSSParserLocalContext&) const {
  return css_property_parser_helpers::ConsumeCommaSeparatedList(
      css_parsing_utils::ConsumePositionLonghand<CSSValueID::kLeft,
                                                 CSSValueID::kRight>,
      range, context.Mode());
}

const CSSValue* BackgroundPositionX::CSSValueFromComputedStyleInternal(
    const ComputedStyle& style,
    const SVGComputedStyle&,
    const LayoutObject*,
    bool allow_visited_style) const {
  const FillLayer* curr_layer = &style.BackgroundLayers();
  return ComputedStyleUtils::BackgroundPositionXOrWebkitMaskPositionX(
      style, curr_layer);
}

const CSSValue* BackgroundPositionY::ParseSingleValue(
    CSSParserTokenRange& range,
    const CSSParserContext& context,
    const CSSParserLocalContext&) const {
  return css_property_parser_helpers::ConsumeCommaSeparatedList(
      css_parsing_utils::ConsumePositionLonghand<CSSValueID::kTop,
                                                 CSSValueID::kBottom>,
      range, context.Mode());
}

const CSSValue* BackgroundPositionY::CSSValueFromComputedStyleInternal(
    const ComputedStyle& style,
    const SVGComputedStyle&,
    const LayoutObject*,
    bool allow_visited_style) const {
  const FillLayer* curr_layer = &style.BackgroundLayers();
  return ComputedStyleUtils::BackgroundPositionYOrWebkitMaskPositionY(
      style, curr_layer);
}

const CSSValue* BackgroundSize::ParseSingleValue(
    CSSParserTokenRange& range,
    const CSSParserContext& context,
    const CSSParserLocalContext& local_context) const {
  return css_parsing_utils::ParseBackgroundOrMaskSize(
      range, context, local_context, WebFeature::kNegativeBackgroundSize);
}

const CSSValue* BackgroundSize::CSSValueFromComputedStyleInternal(
    const ComputedStyle& style,
    const SVGComputedStyle&,
    const LayoutObject*,
    bool allow_visited_style) const {
  const FillLayer& fill_layer = style.BackgroundLayers();
  return ComputedStyleUtils::BackgroundImageOrWebkitMaskSize(style, fill_layer);
}

const CSSValue* BaselineShift::ParseSingleValue(
    CSSParserTokenRange& range,
    const CSSParserContext& context,
    const CSSParserLocalContext&) const {
  CSSValueID id = range.Peek().Id();
  if (id == CSSValueID::kBaseline || id == CSSValueID::kSub ||
      id == CSSValueID::kSuper)
    return css_property_parser_helpers::ConsumeIdent(range);
  return css_property_parser_helpers::ConsumeLengthOrPercent(
      range, kSVGAttributeMode, kValueRangeAll);
}

const CSSValue* BaselineShift::CSSValueFromComputedStyleInternal(
    const ComputedStyle& style,
    const SVGComputedStyle& svg_style,
    const LayoutObject*,
    bool allow_visited_style) const {
  switch (svg_style.BaselineShift()) {
    case BS_SUPER:
      return CSSIdentifierValue::Create(CSSValueID::kSuper);
    case BS_SUB:
      return CSSIdentifierValue::Create(CSSValueID::kSub);
    case BS_LENGTH:
      return ComputedStyleUtils::ZoomAdjustedPixelValueForLength(
          svg_style.BaselineShiftValue(), style);
  }
  NOTREACHED();
  return nullptr;
}

void BaselineShift::ApplyInherit(StyleResolverState& state) const {
  const SVGComputedStyle& parent_svg_style = state.ParentStyle()->SvgStyle();
  EBaselineShift baseline_shift = parent_svg_style.BaselineShift();
  SVGComputedStyle& svg_style = state.Style()->AccessSVGStyle();
  svg_style.SetBaselineShift(baseline_shift);
  if (baseline_shift == BS_LENGTH)
    svg_style.SetBaselineShiftValue(parent_svg_style.BaselineShiftValue());
}

void BaselineShift::ApplyValue(StyleResolverState& state,
                               const CSSValue& value) const {
  SVGComputedStyle& svg_style = state.Style()->AccessSVGStyle();
  auto* identifier_value = DynamicTo<CSSIdentifierValue>(value);
  if (!identifier_value) {
    svg_style.SetBaselineShift(BS_LENGTH);
    svg_style.SetBaselineShiftValue(StyleBuilderConverter::ConvertLength(
        state, To<CSSPrimitiveValue>(value)));
    return;
  }
  switch (identifier_value->GetValueID()) {
    case CSSValueID::kBaseline:
      svg_style.SetBaselineShift(BS_LENGTH);
      svg_style.SetBaselineShiftValue(Length::Fixed());
      return;
    case CSSValueID::kSub:
      svg_style.SetBaselineShift(BS_SUB);
      return;
    case CSSValueID::kSuper:
      svg_style.SetBaselineShift(BS_SUPER);
      return;
    default:
      NOTREACHED();
  }
}

const CSSValue* BlockSize::ParseSingleValue(
    CSSParserTokenRange& range,
    const CSSParserContext& context,
    const CSSParserLocalContext&) const {
  return css_parsing_utils::ConsumeWidthOrHeight(range, context);
}

bool BlockSize::IsLayoutDependent(const ComputedStyle* style,
                                  LayoutObject* layout_object) const {
  return layout_object && layout_object->IsBox();
}

const CSSValue* BorderBlockEndColor::ParseSingleValue(
    CSSParserTokenRange& range,
    const CSSParserContext& context,
    const CSSParserLocalContext&) const {
  return css_property_parser_helpers::ConsumeColor(range, context.Mode());
}

const CSSValue* BorderBlockEndWidth::ParseSingleValue(
    CSSParserTokenRange& range,
    const CSSParserContext& context,
    const CSSParserLocalContext&) const {
  return css_parsing_utils::ConsumeBorderWidth(
      range, context.Mode(),
      css_property_parser_helpers::UnitlessQuirk::kForbid);
}

const CSSValue* BorderBlockStartColor::ParseSingleValue(
    CSSParserTokenRange& range,
    const CSSParserContext& context,
    const CSSParserLocalContext&) const {
  return css_property_parser_helpers::ConsumeColor(range, context.Mode());
}

const CSSValue* BorderBlockStartWidth::ParseSingleValue(
    CSSParserTokenRange& range,
    const CSSParserContext& context,
    const CSSParserLocalContext&) const {
  return css_parsing_utils::ConsumeBorderWidth(
      range, context.Mode(),
      css_property_parser_helpers::UnitlessQuirk::kForbid);
}

const CSSValue* BorderBottomColor::ParseSingleValue(
    CSSParserTokenRange& range,
    const CSSParserContext& context,
    const CSSParserLocalContext& local_context) const {
  return css_parsing_utils::ConsumeBorderColorSide(range, context,
                                                   local_context);
}

const blink::Color BorderBottomColor::ColorIncludingFallback(
    bool visited_link,
    const ComputedStyle& style) const {
  DCHECK(!visited_link);
  return ComputedStyleUtils::BorderSideColor(style, style.BorderBottomColor(),
                                             style.BorderBottomStyle(),
                                             visited_link);
}

const CSSValue* BorderBottomColor::CSSValueFromComputedStyleInternal(
    const ComputedStyle& style,
    const SVGComputedStyle&,
    const LayoutObject*,
    bool allow_visited_style) const {
  return allow_visited_style ? cssvalue::CSSColorValue::Create(
                                   style.VisitedDependentColor(*this).Rgb())
                             : ComputedStyleUtils::CurrentColorOrValidColor(
                                   style, style.BorderBottomColor());
}

const CSSValue* BorderBottomLeftRadius::ParseSingleValue(
    CSSParserTokenRange& range,
    const CSSParserContext& context,
    const CSSParserLocalContext&) const {
  return css_parsing_utils::ParseBorderRadiusCorner(range, context);
}

const CSSValue* BorderBottomLeftRadius::CSSValueFromComputedStyleInternal(
    const ComputedStyle& style,
    const SVGComputedStyle&,
    const LayoutObject*,
    bool allow_visited_style) const {
  return &ComputedStyleUtils::ValueForBorderRadiusCorner(
      style.BorderBottomLeftRadius(), style);
}

const CSSValue* BorderBottomRightRadius::ParseSingleValue(
    CSSParserTokenRange& range,
    const CSSParserContext& context,
    const CSSParserLocalContext&) const {
  return css_parsing_utils::ParseBorderRadiusCorner(range, context);
}

const CSSValue* BorderBottomRightRadius::CSSValueFromComputedStyleInternal(
    const ComputedStyle& style,
    const SVGComputedStyle&,
    const LayoutObject*,
    bool allow_visited_style) const {
  return &ComputedStyleUtils::ValueForBorderRadiusCorner(
      style.BorderBottomRightRadius(), style);
}
const CSSValue* BorderBottomStyle::CSSValueFromComputedStyleInternal(
    const ComputedStyle& style,
    const SVGComputedStyle&,
    const LayoutObject*,
    bool allow_visited_style) const {
  return CSSIdentifierValue::Create(style.BorderBottomStyle());
}

const CSSValue* BorderBottomWidth::ParseSingleValue(
    CSSParserTokenRange& range,
    const CSSParserContext& context,
    const CSSParserLocalContext& local_context) const {
  return css_parsing_utils::ParseBorderWidthSide(range, context, local_context);
}

const CSSValue* BorderBottomWidth::CSSValueFromComputedStyleInternal(
    const ComputedStyle& style,
    const SVGComputedStyle&,
    const LayoutObject*,
    bool allow_visited_style) const {
  return ZoomAdjustedPixelValue(style.BorderBottomWidth(), style);
}

const CSSValue* BorderCollapse::CSSValueFromComputedStyleInternal(
    const ComputedStyle& style,
    const SVGComputedStyle&,
    const LayoutObject*,
    bool allow_visited_style) const {
  if (style.BorderCollapse() == EBorderCollapse::kCollapse)
    return CSSIdentifierValue::Create(CSSValueID::kCollapse);
  return CSSIdentifierValue::Create(CSSValueID::kSeparate);
}

const CSSValue* BorderImageOutset::ParseSingleValue(
    CSSParserTokenRange& range,
    const CSSParserContext&,
    const CSSParserLocalContext&) const {
  return css_parsing_utils::ConsumeBorderImageOutset(range);
}

const CSSValue* BorderImageOutset::CSSValueFromComputedStyleInternal(
    const ComputedStyle& style,
    const SVGComputedStyle&,
    const LayoutObject*,
    bool allow_visited_style) const {
  return ComputedStyleUtils::ValueForNinePieceImageQuad(
      style.BorderImage().Outset(), style);
}

const CSSValue* BorderImageOutset::InitialValue() const {
  DEFINE_STATIC_LOCAL(
      const Persistent<CSSQuadValue>, value,
      (CSSQuadValue::Create(CSSNumericLiteralValue::Create(
                                0, CSSPrimitiveValue::UnitType::kInteger),
                            CSSQuadValue::kSerializeAsQuad)));
  return value;
}

const CSSValue* BorderImageRepeat::ParseSingleValue(
    CSSParserTokenRange& range,
    const CSSParserContext&,
    const CSSParserLocalContext&) const {
  return css_parsing_utils::ConsumeBorderImageRepeat(range);
}

const CSSValue* BorderImageRepeat::CSSValueFromComputedStyleInternal(
    const ComputedStyle& style,
    const SVGComputedStyle&,
    const LayoutObject*,
    bool allow_visited_style) const {
  return ComputedStyleUtils::ValueForNinePieceImageRepeat(style.BorderImage());
}

const CSSValue* BorderImageRepeat::InitialValue() const {
  DEFINE_STATIC_LOCAL(const Persistent<CSSValue>, value,
                      (CSSIdentifierValue::Create(CSSValueID::kStretch)));
  return value;
}

const CSSValue* BorderImageSlice::ParseSingleValue(
    CSSParserTokenRange& range,
    const CSSParserContext&,
    const CSSParserLocalContext&) const {
  return css_parsing_utils::ConsumeBorderImageSlice(
      range, css_parsing_utils::DefaultFill::kNoFill);
}

const CSSValue* BorderImageSlice::CSSValueFromComputedStyleInternal(
    const ComputedStyle& style,
    const SVGComputedStyle&,
    const LayoutObject*,
    bool allow_visited_style) const {
  return ComputedStyleUtils::ValueForNinePieceImageSlice(style.BorderImage());
}

const CSSValue* BorderImageSlice::InitialValue() const {
  DEFINE_STATIC_LOCAL(
      const Persistent<CSSBorderImageSliceValue>, value,
      (MakeGarbageCollected<CSSBorderImageSliceValue>(
          CSSQuadValue::Create(
              CSSNumericLiteralValue::Create(
                  100, CSSPrimitiveValue::UnitType::kPercentage),
              CSSQuadValue::kSerializeAsQuad),
          /* fill */ false)));
  return value;
}

const CSSValue* BorderImageSource::ParseSingleValue(
    CSSParserTokenRange& range,
    const CSSParserContext& context,
    const CSSParserLocalContext&) const {
  return css_property_parser_helpers::ConsumeImageOrNone(range, &context);
}

const CSSValue* BorderImageSource::CSSValueFromComputedStyleInternal(
    const ComputedStyle& style,
    const SVGComputedStyle&,
    const LayoutObject*,
    bool allow_visited_style) const {
  if (style.BorderImageSource()) {
    return style.BorderImageSource()->ComputedCSSValue(style,
                                                       allow_visited_style);
  }
  return CSSIdentifierValue::Create(CSSValueID::kNone);
}

const CSSValue* BorderImageSource::InitialValue() const {
  DEFINE_STATIC_LOCAL(const Persistent<CSSValue>, value,
                      (CSSIdentifierValue::Create(CSSValueID::kNone)));
  return value;
}

void BorderImageSource::ApplyValue(StyleResolverState& state,
                                   const CSSValue& value) const {
  state.Style()->SetBorderImageSource(
      state.GetStyleImage(CSSPropertyID::kBorderImageSource, value));
}

const CSSValue* BorderImageWidth::ParseSingleValue(
    CSSParserTokenRange& range,
    const CSSParserContext&,
    const CSSParserLocalContext&) const {
  return css_parsing_utils::ConsumeBorderImageWidth(range);
}

const CSSValue* BorderImageWidth::CSSValueFromComputedStyleInternal(
    const ComputedStyle& style,
    const SVGComputedStyle&,
    const LayoutObject*,
    bool allow_visited_style) const {
  return ComputedStyleUtils::ValueForNinePieceImageQuad(
      style.BorderImage().BorderSlices(), style);
}

const CSSValue* BorderImageWidth::InitialValue() const {
  DEFINE_STATIC_LOCAL(
      const Persistent<CSSQuadValue>, value,
      (CSSQuadValue::Create(CSSNumericLiteralValue::Create(
                                1, CSSPrimitiveValue::UnitType::kInteger),
                            CSSQuadValue::kSerializeAsQuad)));
  return value;
}

const CSSValue* BorderInlineEndColor::ParseSingleValue(
    CSSParserTokenRange& range,
    const CSSParserContext& context,
    const CSSParserLocalContext&) const {
  return css_property_parser_helpers::ConsumeColor(range, context.Mode());
}

const CSSValue* BorderInlineEndWidth::ParseSingleValue(
    CSSParserTokenRange& range,
    const CSSParserContext& context,
    const CSSParserLocalContext&) const {
  return css_parsing_utils::ConsumeBorderWidth(
      range, context.Mode(),
      css_property_parser_helpers::UnitlessQuirk::kForbid);
}

const CSSValue* BorderInlineStartColor::ParseSingleValue(
    CSSParserTokenRange& range,
    const CSSParserContext& context,
    const CSSParserLocalContext&) const {
  return css_property_parser_helpers::ConsumeColor(range, context.Mode());
}

const CSSValue* BorderInlineStartWidth::ParseSingleValue(
    CSSParserTokenRange& range,
    const CSSParserContext& context,
    const CSSParserLocalContext&) const {
  return css_parsing_utils::ConsumeBorderWidth(
      range, context.Mode(),
      css_property_parser_helpers::UnitlessQuirk::kForbid);
}

const CSSValue* BorderLeftColor::ParseSingleValue(
    CSSParserTokenRange& range,
    const CSSParserContext& context,
    const CSSParserLocalContext& local_context) const {
  return css_parsing_utils::ConsumeBorderColorSide(range, context,
                                                   local_context);
}

const blink::Color BorderLeftColor::ColorIncludingFallback(
    bool visited_link,
    const ComputedStyle& style) const {
  DCHECK(!visited_link);
  return ComputedStyleUtils::BorderSideColor(
      style, style.BorderLeftColor(), style.BorderLeftStyle(), visited_link);
}

const CSSValue* BorderLeftColor::CSSValueFromComputedStyleInternal(
    const ComputedStyle& style,
    const SVGComputedStyle&,
    const LayoutObject*,
    bool allow_visited_style) const {
  return allow_visited_style ? cssvalue::CSSColorValue::Create(
                                   style.VisitedDependentColor(*this).Rgb())
                             : ComputedStyleUtils::CurrentColorOrValidColor(
                                   style, style.BorderLeftColor());
}

const CSSValue* BorderLeftStyle::CSSValueFromComputedStyleInternal(
    const ComputedStyle& style,
    const SVGComputedStyle&,
    const LayoutObject*,
    bool allow_visited_style) const {
  return CSSIdentifierValue::Create(style.BorderLeftStyle());
}

const CSSValue* BorderLeftWidth::ParseSingleValue(
    CSSParserTokenRange& range,
    const CSSParserContext& context,
    const CSSParserLocalContext& local_context) const {
  return css_parsing_utils::ParseBorderWidthSide(range, context, local_context);
}

const CSSValue* BorderLeftWidth::CSSValueFromComputedStyleInternal(
    const ComputedStyle& style,
    const SVGComputedStyle&,
    const LayoutObject*,
    bool allow_visited_style) const {
  return ZoomAdjustedPixelValue(style.BorderLeftWidth(), style);
}

const CSSValue* BorderRightColor::ParseSingleValue(
    CSSParserTokenRange& range,
    const CSSParserContext& context,
    const CSSParserLocalContext& local_context) const {
  return css_parsing_utils::ConsumeBorderColorSide(range, context,
                                                   local_context);
}

const blink::Color BorderRightColor::ColorIncludingFallback(
    bool visited_link,
    const ComputedStyle& style) const {
  DCHECK(!visited_link);
  return ComputedStyleUtils::BorderSideColor(
      style, style.BorderRightColor(), style.BorderRightStyle(), visited_link);
}

const CSSValue* BorderRightColor::CSSValueFromComputedStyleInternal(
    const ComputedStyle& style,
    const SVGComputedStyle&,
    const LayoutObject*,
    bool allow_visited_style) const {
  return allow_visited_style ? cssvalue::CSSColorValue::Create(
                                   style.VisitedDependentColor(*this).Rgb())
                             : ComputedStyleUtils::CurrentColorOrValidColor(
                                   style, style.BorderRightColor());
}

const CSSValue* BorderRightStyle::CSSValueFromComputedStyleInternal(
    const ComputedStyle& style,
    const SVGComputedStyle&,
    const LayoutObject*,
    bool allow_visited_style) const {
  return CSSIdentifierValue::Create(style.BorderRightStyle());
}

const CSSValue* BorderRightWidth::ParseSingleValue(
    CSSParserTokenRange& range,
    const CSSParserContext& context,
    const CSSParserLocalContext& local_context) const {
  return css_parsing_utils::ParseBorderWidthSide(range, context, local_context);
}

const CSSValue* BorderRightWidth::CSSValueFromComputedStyleInternal(
    const ComputedStyle& style,
    const SVGComputedStyle&,
    const LayoutObject*,
    bool allow_visited_style) const {
  return ZoomAdjustedPixelValue(style.BorderRightWidth(), style);
}

const CSSValue* BorderTopColor::ParseSingleValue(
    CSSParserTokenRange& range,
    const CSSParserContext& context,
    const CSSParserLocalContext& local_context) const {
  return css_parsing_utils::ConsumeBorderColorSide(range, context,
                                                   local_context);
}

const blink::Color BorderTopColor::ColorIncludingFallback(
    bool visited_link,
    const ComputedStyle& style) const {
  DCHECK(!visited_link);
  return ComputedStyleUtils::BorderSideColor(
      style, style.BorderTopColor(), style.BorderTopStyle(), visited_link);
}

const CSSValue* BorderTopColor::CSSValueFromComputedStyleInternal(
    const ComputedStyle& style,
    const SVGComputedStyle&,
    const LayoutObject*,
    bool allow_visited_style) const {
  return allow_visited_style
             ? cssvalue::CSSColorValue::Create(
                   style.VisitedDependentColor(*this).Rgb())
             : ComputedStyleUtils::ComputedStyleUtils::CurrentColorOrValidColor(
                   style, style.BorderTopColor());
}

const CSSValue* BorderTopLeftRadius::ParseSingleValue(
    CSSParserTokenRange& range,
    const CSSParserContext& context,
    const CSSParserLocalContext&) const {
  return css_parsing_utils::ParseBorderRadiusCorner(range, context);
}

const CSSValue* BorderTopLeftRadius::CSSValueFromComputedStyleInternal(
    const ComputedStyle& style,
    const SVGComputedStyle&,
    const LayoutObject*,
    bool allow_visited_style) const {
  return &ComputedStyleUtils::ValueForBorderRadiusCorner(
      style.BorderTopLeftRadius(), style);
}

const CSSValue* BorderTopRightRadius::ParseSingleValue(
    CSSParserTokenRange& range,
    const CSSParserContext& context,
    const CSSParserLocalContext&) const {
  return css_parsing_utils::ParseBorderRadiusCorner(range, context);
}

const CSSValue* BorderTopRightRadius::CSSValueFromComputedStyleInternal(
    const ComputedStyle& style,
    const SVGComputedStyle&,
    const LayoutObject*,
    bool allow_visited_style) const {
  return &ComputedStyleUtils::ValueForBorderRadiusCorner(
      style.BorderTopRightRadius(), style);
}

const CSSValue* BorderTopStyle::CSSValueFromComputedStyleInternal(
    const ComputedStyle& style,
    const SVGComputedStyle&,
    const LayoutObject*,
    bool allow_visited_style) const {
  return CSSIdentifierValue::Create(style.BorderTopStyle());
}

const CSSValue* BorderTopWidth::ParseSingleValue(
    CSSParserTokenRange& range,
    const CSSParserContext& context,
    const CSSParserLocalContext& local_context) const {
  return css_parsing_utils::ParseBorderWidthSide(range, context, local_context);
}

const CSSValue* BorderTopWidth::CSSValueFromComputedStyleInternal(
    const ComputedStyle& style,
    const SVGComputedStyle&,
    const LayoutObject*,
    bool allow_visited_style) const {
  return ZoomAdjustedPixelValue(style.BorderTopWidth(), style);
}

const CSSValue* Bottom::ParseSingleValue(
    CSSParserTokenRange& range,
    const CSSParserContext& context,
    const CSSParserLocalContext& local_context) const {
  return css_parsing_utils::ConsumeMarginOrOffset(
      range, context.Mode(),
      css_parsing_utils::UnitlessUnlessShorthand(local_context));
}

bool Bottom::IsLayoutDependent(const ComputedStyle* style,
                               LayoutObject* layout_object) const {
  return layout_object && layout_object->IsBox();
}

const CSSValue* Bottom::CSSValueFromComputedStyleInternal(
    const ComputedStyle& style,
    const SVGComputedStyle&,
    const LayoutObject* layout_object,
    bool allow_visited_style) const {
  return ComputedStyleUtils::ValueForPositionOffset(style, *this,
                                                    layout_object);
}

const CSSValue* BoxShadow::ParseSingleValue(
    CSSParserTokenRange& range,
    const CSSParserContext& context,
    const CSSParserLocalContext&) const {
  return css_parsing_utils::ConsumeShadow(
      range, context.Mode(), css_parsing_utils::AllowInsetAndSpread::kAllow);
}

const CSSValue* BoxShadow::CSSValueFromComputedStyleInternal(
    const ComputedStyle& style,
    const SVGComputedStyle&,
    const LayoutObject*,
    bool allow_visited_style) const {
  return ComputedStyleUtils::ValueForShadowList(style.BoxShadow(), style, true);
}

const CSSValue* BoxSizing::CSSValueFromComputedStyleInternal(
    const ComputedStyle& style,
    const SVGComputedStyle&,
    const LayoutObject*,
    bool allow_visited_style) const {
  if (style.BoxSizing() == EBoxSizing::kContentBox)
    return CSSIdentifierValue::Create(CSSValueID::kContentBox);
  return CSSIdentifierValue::Create(CSSValueID::kBorderBox);
}

const CSSValue* BreakAfter::CSSValueFromComputedStyleInternal(
    const ComputedStyle& style,
    const SVGComputedStyle&,
    const LayoutObject*,
    bool allow_visited_style) const {
  return CSSIdentifierValue::Create(style.BreakAfter());
}

const CSSValue* BreakBefore::CSSValueFromComputedStyleInternal(
    const ComputedStyle& style,
    const SVGComputedStyle&,
    const LayoutObject*,
    bool allow_visited_style) const {
  return CSSIdentifierValue::Create(style.BreakBefore());
}

const CSSValue* BreakInside::CSSValueFromComputedStyleInternal(
    const ComputedStyle& style,
    const SVGComputedStyle&,
    const LayoutObject*,
    bool allow_visited_style) const {
  return CSSIdentifierValue::Create(style.BreakInside());
}

const CSSValue* BufferedRendering::CSSValueFromComputedStyleInternal(
    const ComputedStyle& style,
    const SVGComputedStyle& svg_style,
    const LayoutObject*,
    bool allow_visited_style) const {
  return CSSIdentifierValue::Create(svg_style.BufferedRendering());
}

const CSSValue* CaptionSide::CSSValueFromComputedStyleInternal(
    const ComputedStyle& style,
    const SVGComputedStyle&,
    const LayoutObject*,
    bool allow_visited_style) const {
  return CSSIdentifierValue::Create(style.CaptionSide());
}

const CSSValue* CaretColor::ParseSingleValue(
    CSSParserTokenRange& range,
    const CSSParserContext& context,
    const CSSParserLocalContext&) const {
  if (range.Peek().Id() == CSSValueID::kAuto)
    return css_property_parser_helpers::ConsumeIdent(range);
  return css_property_parser_helpers::ConsumeColor(range, context.Mode());
}

const blink::Color CaretColor::ColorIncludingFallback(
    bool visited_link,
    const ComputedStyle& style) const {
  DCHECK(!visited_link);
  StyleAutoColor auto_color = style.CaretColor();
  // TODO(rego): We may want to adjust the caret color if it's the same as
  // the background to ensure good visibility and contrast.
  StyleColor result = auto_color.IsAutoColor() ? StyleColor::CurrentColor()
                                               : auto_color.ToStyleColor();
  return result.Resolve(style.GetColor());
}

const CSSValue* CaretColor::CSSValueFromComputedStyleInternal(
    const ComputedStyle& style,
    const SVGComputedStyle&,
    const LayoutObject*,
    bool allow_visited_style) const {
  blink::Color color;
  if (allow_visited_style)
    color = style.VisitedDependentColor(*this);
  else if (style.CaretColor().IsAutoColor())
    color = StyleColor::CurrentColor().Resolve(style.GetColor());
  else
    color = style.CaretColor().ToStyleColor().Resolve(style.GetColor());
  return cssvalue::CSSColorValue::Create(color.Rgb());
}

void CaretColor::ApplyInitial(StyleResolverState& state) const {
  state.Style()->SetCaretColor(StyleAutoColor::AutoColor());
}

void CaretColor::ApplyInherit(StyleResolverState& state) const {
  state.Style()->SetCaretColor(state.ParentStyle()->CaretColor());
}

void CaretColor::ApplyValue(StyleResolverState& state,
                            const CSSValue& value) const {
  state.Style()->SetCaretColor(
      StyleBuilderConverter::ConvertStyleAutoColor(state, value));
}

const CSSValue* Clear::CSSValueFromComputedStyleInternal(
    const ComputedStyle& style,
    const SVGComputedStyle&,
    const LayoutObject*,
    bool allow_visited_style) const {
  return CSSIdentifierValue::Create(style.Clear());
}

namespace {

CSSValue* ConsumeClipComponent(CSSParserTokenRange& range,
                               CSSParserMode css_parser_mode) {
  if (range.Peek().Id() == CSSValueID::kAuto)
    return css_property_parser_helpers::ConsumeIdent(range);
  return css_property_parser_helpers::ConsumeLength(
      range, css_parser_mode, kValueRangeAll,
      css_property_parser_helpers::UnitlessQuirk::kAllow);
}

}  // namespace

const CSSValue* Clip::ParseSingleValue(CSSParserTokenRange& range,
                                       const CSSParserContext& context,
                                       const CSSParserLocalContext&) const {
  if (range.Peek().Id() == CSSValueID::kAuto)
    return css_property_parser_helpers::ConsumeIdent(range);

  if (range.Peek().FunctionId() != CSSValueID::kRect)
    return nullptr;

  CSSParserTokenRange args =
      css_property_parser_helpers::ConsumeFunction(range);
  // rect(t, r, b, l) || rect(t r b l)
  CSSValue* top = ConsumeClipComponent(args, context.Mode());
  if (!top)
    return nullptr;
  bool needs_comma =
      css_property_parser_helpers::ConsumeCommaIncludingWhitespace(args);
  CSSValue* right = ConsumeClipComponent(args, context.Mode());
  if (!right ||
      (needs_comma &&
       !css_property_parser_helpers::ConsumeCommaIncludingWhitespace(args)))
    return nullptr;
  CSSValue* bottom = ConsumeClipComponent(args, context.Mode());
  if (!bottom ||
      (needs_comma &&
       !css_property_parser_helpers::ConsumeCommaIncludingWhitespace(args)))
    return nullptr;
  CSSValue* left = ConsumeClipComponent(args, context.Mode());
  if (!left || !args.AtEnd())
    return nullptr;
  return MakeGarbageCollected<CSSQuadValue>(top, right, bottom, left,
                                            CSSQuadValue::kSerializeAsRect);
}

const CSSValue* Clip::CSSValueFromComputedStyleInternal(
    const ComputedStyle& style,
    const SVGComputedStyle&,
    const LayoutObject*,
    bool allow_visited_style) const {
  if (style.HasAutoClip())
    return CSSIdentifierValue::Create(CSSValueID::kAuto);
  CSSValue* top = ComputedStyleUtils::ZoomAdjustedPixelValueOrAuto(
      style.Clip().Top(), style);
  CSSValue* right = ComputedStyleUtils::ZoomAdjustedPixelValueOrAuto(
      style.Clip().Right(), style);
  CSSValue* bottom = ComputedStyleUtils::ZoomAdjustedPixelValueOrAuto(
      style.Clip().Bottom(), style);
  CSSValue* left = ComputedStyleUtils::ZoomAdjustedPixelValueOrAuto(
      style.Clip().Left(), style);
  return MakeGarbageCollected<CSSQuadValue>(top, right, bottom, left,
                                            CSSQuadValue::kSerializeAsRect);
}

const CSSValue* ClipPath::ParseSingleValue(CSSParserTokenRange& range,
                                           const CSSParserContext& context,
                                           const CSSParserLocalContext&) const {
  if (range.Peek().Id() == CSSValueID::kNone)
    return css_property_parser_helpers::ConsumeIdent(range);
  if (cssvalue::CSSURIValue* url =
          css_property_parser_helpers::ConsumeUrl(range, &context))
    return url;
  return css_parsing_utils::ConsumeBasicShape(range, context);
}

const CSSValue* ClipPath::CSSValueFromComputedStyleInternal(
    const ComputedStyle& style,
    const SVGComputedStyle&,
    const LayoutObject*,
    bool allow_visited_style) const {
  if (ClipPathOperation* operation = style.ClipPath()) {
    if (operation->GetType() == ClipPathOperation::SHAPE) {
      return ValueForBasicShape(
          style, To<ShapeClipPathOperation>(operation)->GetBasicShape());
    }
    if (operation->GetType() == ClipPathOperation::REFERENCE) {
      return cssvalue::CSSURIValue::Create(
          To<ReferenceClipPathOperation>(operation)->Url());
    }
  }
  return CSSIdentifierValue::Create(CSSValueID::kNone);
}

const CSSValue* ClipRule::CSSValueFromComputedStyleInternal(
    const ComputedStyle& style,
    const SVGComputedStyle& svg_style,
    const LayoutObject*,
    bool allow_visited_style) const {
  return CSSIdentifierValue::Create(svg_style.ClipRule());
}

const CSSValue* Color::ParseSingleValue(CSSParserTokenRange& range,
                                        const CSSParserContext& context,
                                        const CSSParserLocalContext&) const {
  return css_property_parser_helpers::ConsumeColor(
      range, context.Mode(), IsQuirksModeBehavior(context.Mode()));
}

const blink::Color Color::ColorIncludingFallback(
    bool visited_link,
    const ComputedStyle& style) const {
  DCHECK(!visited_link);
  return style.GetColor();
}

const CSSValue* Color::CSSValueFromComputedStyleInternal(
    const ComputedStyle& style,
    const SVGComputedStyle&,
    const LayoutObject*,
    bool allow_visited_style) const {
  return cssvalue::CSSColorValue::Create(
      allow_visited_style ? style.VisitedDependentColor(*this).Rgb()
                          : style.GetColor().Rgb());
}

void Color::ApplyInitial(StyleResolverState& state) const {
  if (!RuntimeEnabledFeatures::CSSCascadeEnabled()) {
    state.SetCascadedColorValue(
        CSSIdentifierValue::Create(CSSValueID::kInitial));
    return;
  }
  blink::Color color = ComputedStyleInitialValues::InitialColor();
  state.Style()->SetColor(color);
}

void Color::ApplyInherit(StyleResolverState& state) const {
  if (!RuntimeEnabledFeatures::CSSCascadeEnabled()) {
    state.SetCascadedColorValue(
        CSSIdentifierValue::Create(CSSValueID::kInherit));
    return;
  }
  blink::Color color = state.ParentStyle()->GetColor();
  if (state.ParentStyle()->IsColorInternalText())
    state.Style()->SetIsColorInternalText(true);
  else
    state.Style()->SetColor(color);
}

void Color::ApplyValue(StyleResolverState& state, const CSSValue& value) const {
  if (!RuntimeEnabledFeatures::CSSCascadeEnabled()) {
    state.SetCascadedColorValue(&value);
    return;
  }
  // As per the spec, 'color: currentColor' is treated as 'color: inherit'
  auto* identifier_value = DynamicTo<CSSIdentifierValue>(value);
  if (identifier_value &&
      identifier_value->GetValueID() == CSSValueID::kCurrentcolor) {
    ApplyInherit(state);
    return;
  }

  if (identifier_value &&
      identifier_value->GetValueID() == CSSValueID::kInternalRootColor) {
    state.Style()->SetIsColorInternalText(true);
  } else {
    state.Style()->SetColor(StyleBuilderConverter::ConvertColor(state, value));
  }
}

const CSSValue* ColorInterpolation::CSSValueFromComputedStyleInternal(
    const ComputedStyle& style,
    const SVGComputedStyle& svg_style,
    const LayoutObject*,
    bool allow_visited_style) const {
  return CSSIdentifierValue::Create(svg_style.ColorInterpolation());
}

const CSSValue* ColorInterpolationFilters::CSSValueFromComputedStyleInternal(
    const ComputedStyle& style,
    const SVGComputedStyle& svg_style,
    const LayoutObject*,
    bool allow_visited_style) const {
  return CSSIdentifierValue::Create(svg_style.ColorInterpolationFilters());
}

const CSSValue* ColorRendering::CSSValueFromComputedStyleInternal(
    const ComputedStyle& style,
    const SVGComputedStyle& svg_style,
    const LayoutObject*,
    bool allow_visited_style) const {
  return CSSIdentifierValue::Create(svg_style.ColorRendering());
}

const CSSValue* ColorScheme::ParseSingleValue(
    CSSParserTokenRange& range,
    const CSSParserContext& context,
    const CSSParserLocalContext&) const {
  if (range.Peek().Id() == CSSValueID::kNormal)
    return css_property_parser_helpers::ConsumeIdent(range);
  if (range.Peek().Id() == CSSValueID::kOnly) {
    // Handle 'only light'
    CSSValueList* values = CSSValueList::CreateSpaceSeparated();
    values->Append(*css_property_parser_helpers::ConsumeIdent(range));
    if (range.Peek().Id() != CSSValueID::kLight)
      return nullptr;
    values->Append(*css_property_parser_helpers::ConsumeIdent(range));
    return values;
  }

  CSSValueList* values = CSSValueList::CreateSpaceSeparated();
  do {
    CSSValueID id = range.Peek().Id();
    // 'normal' is handled above, and 'none' is reserved for future use.
    // 'revert' is not yet implemented as a keyword, but still skip it for
    // compat and interop.
    if (id == CSSValueID::kNormal || id == CSSValueID::kNone ||
        id == CSSValueID::kRevert || id == CSSValueID::kDefault) {
      return nullptr;
    }
    if (id == CSSValueID::kOnly) {
      values->Append(*css_property_parser_helpers::ConsumeIdent(range));
      // Has to be 'light only'
      if (range.AtEnd() && values->length() == 2 &&
          To<CSSIdentifierValue>(values->Item(0)).GetValueID() ==
              CSSValueID::kLight) {
        return values;
      }
      return nullptr;
    }
    CSSValue* value =
        css_property_parser_helpers::ConsumeIdent<CSSValueID::kDark,
                                                  CSSValueID::kLight>(range);
    if (!value)
      value = css_property_parser_helpers::ConsumeCustomIdent(range, context);
    if (!value)
      return nullptr;
    values->Append(*value);
  } while (!range.AtEnd());
  return values;
}

const CSSValue* ColorScheme::CSSValueFromComputedStyleInternal(
    const ComputedStyle& style,
    const SVGComputedStyle&,
    const LayoutObject*,
    bool allow_visited_style) const {
  if (style.ColorScheme().IsEmpty())
    return CSSIdentifierValue::Create(CSSValueID::kNormal);
  CSSValueList* list = CSSValueList::CreateSpaceSeparated();
  for (auto ident : style.ColorScheme()) {
    list->Append(*MakeGarbageCollected<CSSCustomIdentValue>(ident));
  }
  return list;
}

const CSSValue* ColorScheme::InitialValue() const {
  return CSSIdentifierValue::Create(CSSValueID::kNormal);
}

void ColorScheme::ApplyInitial(StyleResolverState& state) const {
  state.Style()->SetColorScheme(Vector<AtomicString>());
  state.Style()->SetDarkColorScheme(false);
}

void ColorScheme::ApplyInherit(StyleResolverState& state) const {
  state.Style()->SetColorScheme(state.ParentStyle()->ColorScheme());
  state.Style()->SetDarkColorScheme(state.ParentStyle()->DarkColorScheme());
}

void ColorScheme::ApplyValue(StyleResolverState& state,
                             const CSSValue& value) const {
  if (const auto* identifier_value = DynamicTo<CSSIdentifierValue>(value)) {
    DCHECK(identifier_value->GetValueID() == CSSValueID::kNormal);
    state.Style()->SetColorScheme(Vector<AtomicString>());
    state.Style()->SetDarkColorScheme(false);
  } else if (const auto* scheme_list = DynamicTo<CSSValueList>(value)) {
    bool prefers_dark =
        state.GetDocument().GetStyleEngine().GetPreferredColorScheme() ==
        PreferredColorScheme::kDark;
    bool use_dark = false;
    Vector<AtomicString> color_schemes;
    for (auto& item : *scheme_list) {
      if (const auto* custom_ident = DynamicTo<CSSCustomIdentValue>(*item)) {
        color_schemes.push_back(custom_ident->Value());
      } else if (const auto* ident = DynamicTo<CSSIdentifierValue>(*item)) {
        color_schemes.push_back(ident->CssText());
        if (prefers_dark && ident->GetValueID() == CSSValueID::kDark)
          use_dark = true;
      } else {
        NOTREACHED();
      }
    }
    state.Style()->SetColorScheme(color_schemes);
    state.Style()->SetDarkColorScheme(use_dark);
  } else {
    NOTREACHED();
  }
}

const CSSValue* ColumnCount::ParseSingleValue(
    CSSParserTokenRange& range,
    const CSSParserContext& context,
    const CSSParserLocalContext&) const {
  return css_parsing_utils::ConsumeColumnCount(range);
}

const CSSValue* ColumnCount::CSSValueFromComputedStyleInternal(
    const ComputedStyle& style,
    const SVGComputedStyle&,
    const LayoutObject*,
    bool allow_visited_style) const {
  if (style.HasAutoColumnCount())
    return CSSIdentifierValue::Create(CSSValueID::kAuto);
  return CSSNumericLiteralValue::Create(style.ColumnCount(),
                                        CSSPrimitiveValue::UnitType::kNumber);
}

const CSSValue* ColumnFill::CSSValueFromComputedStyleInternal(
    const ComputedStyle& style,
    const SVGComputedStyle&,
    const LayoutObject*,
    bool allow_visited_style) const {
  return CSSIdentifierValue::Create(style.GetColumnFill());
}

const CSSValue* ColumnGap::ParseSingleValue(
    CSSParserTokenRange& range,
    const CSSParserContext& context,
    const CSSParserLocalContext&) const {
  return css_parsing_utils::ConsumeGapLength(range, context);
}

const CSSValue* ColumnGap::CSSValueFromComputedStyleInternal(
    const ComputedStyle& style,
    const SVGComputedStyle&,
    const LayoutObject*,
    bool) const {
  return ComputedStyleUtils::ValueForGapLength(style.ColumnGap(), style);
}

const CSSValue* ColumnRuleColor::ParseSingleValue(
    CSSParserTokenRange& range,
    const CSSParserContext& context,
    const CSSParserLocalContext&) const {
  return css_property_parser_helpers::ConsumeColor(range, context.Mode());
}

const blink::Color ColumnRuleColor::ColorIncludingFallback(
    bool visited_link,
    const ComputedStyle& style) const {
  DCHECK(!visited_link);
  return style.ColumnRuleColor().Resolve(style.GetColor());
}

const CSSValue* ColumnRuleColor::CSSValueFromComputedStyleInternal(
    const ComputedStyle& style,
    const SVGComputedStyle&,
    const LayoutObject*,
    bool allow_visited_style) const {
  return allow_visited_style ? cssvalue::CSSColorValue::Create(
                                   style.VisitedDependentColor(*this).Rgb())
                             : ComputedStyleUtils::CurrentColorOrValidColor(
                                   style, style.ColumnRuleColor());
}

const CSSValue* ColumnRuleStyle::CSSValueFromComputedStyleInternal(
    const ComputedStyle& style,
    const SVGComputedStyle&,
    const LayoutObject*,
    bool allow_visited_style) const {
  return CSSIdentifierValue::Create(style.ColumnRuleStyle());
}

const CSSValue* ColumnRuleWidth::ParseSingleValue(
    CSSParserTokenRange& range,
    const CSSParserContext& context,
    const CSSParserLocalContext&) const {
  return css_property_parser_helpers::ConsumeLineWidth(
      range, context.Mode(),
      css_property_parser_helpers::UnitlessQuirk::kForbid);
}

const CSSValue* ColumnRuleWidth::CSSValueFromComputedStyleInternal(
    const ComputedStyle& style,
    const SVGComputedStyle&,
    const LayoutObject*,
    bool allow_visited_style) const {
  return ZoomAdjustedPixelValue(style.ColumnRuleWidth(), style);
}

const CSSValue* ColumnSpan::ParseSingleValue(
    CSSParserTokenRange& range,
    const CSSParserContext& context,
    const CSSParserLocalContext&) const {
  return css_property_parser_helpers::ConsumeIdent<CSSValueID::kAll,
                                                   CSSValueID::kNone>(range);
}

const CSSValue* ColumnSpan::CSSValueFromComputedStyleInternal(
    const ComputedStyle& style,
    const SVGComputedStyle&,
    const LayoutObject*,
    bool allow_visited_style) const {
  return CSSIdentifierValue::Create(static_cast<unsigned>(style.GetColumnSpan())
                                        ? CSSValueID::kAll
                                        : CSSValueID::kNone);
}

const CSSValue* ColumnWidth::ParseSingleValue(
    CSSParserTokenRange& range,
    const CSSParserContext& context,
    const CSSParserLocalContext&) const {
  return css_parsing_utils::ConsumeColumnWidth(range);
}

const CSSValue* ColumnWidth::CSSValueFromComputedStyleInternal(
    const ComputedStyle& style,
    const SVGComputedStyle&,
    const LayoutObject*,
    bool allow_visited_style) const {
  if (style.HasAutoColumnWidth())
    return CSSIdentifierValue::Create(CSSValueID::kAuto);
  return ZoomAdjustedPixelValue(style.ColumnWidth(), style);
}

// none | strict | content | [ size || layout || style || paint ]
const CSSValue* Contain::ParseSingleValue(CSSParserTokenRange& range,
                                          const CSSParserContext& context,
                                          const CSSParserLocalContext&) const {
  CSSValueID id = range.Peek().Id();
  if (id == CSSValueID::kNone)
    return css_property_parser_helpers::ConsumeIdent(range);

  CSSValueList* list = CSSValueList::CreateSpaceSeparated();
  if (id == CSSValueID::kStrict || id == CSSValueID::kContent) {
    list->Append(*css_property_parser_helpers::ConsumeIdent(range));
    return list;
  }

  CSSIdentifierValue* size = nullptr;
  CSSIdentifierValue* layout = nullptr;
  CSSIdentifierValue* style = nullptr;
  CSSIdentifierValue* paint = nullptr;
  while (true) {
    id = range.Peek().Id();
    if (id == CSSValueID::kSize && !size)
      size = css_property_parser_helpers::ConsumeIdent(range);
    else if (id == CSSValueID::kLayout && !layout)
      layout = css_property_parser_helpers::ConsumeIdent(range);
    else if (id == CSSValueID::kStyle && !style)
      style = css_property_parser_helpers::ConsumeIdent(range);
    else if (id == CSSValueID::kPaint && !paint)
      paint = css_property_parser_helpers::ConsumeIdent(range);
    else
      break;
  }
  if (size)
    list->Append(*size);
  if (layout)
    list->Append(*layout);
  if (style) {
    context.Count(WebFeature::kCSSValueContainStyle);
    list->Append(*style);
  }
  if (paint)
    list->Append(*paint);
  if (!list->length())
    return nullptr;
  return list;
}

const CSSValue* Contain::CSSValueFromComputedStyleInternal(
    const ComputedStyle& style,
    const SVGComputedStyle&,
    const LayoutObject*,
    bool allow_visited_style) const {
  if (!style.Contain())
    return CSSIdentifierValue::Create(CSSValueID::kNone);
  if (style.Contain() == kContainsStrict)
    return CSSIdentifierValue::Create(CSSValueID::kStrict);
  if (style.Contain() == kContainsContent)
    return CSSIdentifierValue::Create(CSSValueID::kContent);

  CSSValueList* list = CSSValueList::CreateSpaceSeparated();
  if (style.ContainsSize())
    list->Append(*CSSIdentifierValue::Create(CSSValueID::kSize));
  if (style.Contain() & kContainsLayout)
    list->Append(*CSSIdentifierValue::Create(CSSValueID::kLayout));
  if (style.ContainsStyle())
    list->Append(*CSSIdentifierValue::Create(CSSValueID::kStyle));
  if (style.ContainsPaint())
    list->Append(*CSSIdentifierValue::Create(CSSValueID::kPaint));
  DCHECK(list->length());
  return list;
}

const CSSValue* ContentSize::ParseSingleValue(
    CSSParserTokenRange& range,
    const CSSParserContext& context,
    const CSSParserLocalContext&) const {
  if (range.Peek().Id() == CSSValueID::kNone)
    return css_property_parser_helpers::ConsumeIdent(range);
  auto* width = css_property_parser_helpers::ConsumeLength(
      range, context.Mode(), kValueRangeNonNegative);
  if (!width)
    return nullptr;
  auto* height = css_property_parser_helpers::ConsumeLength(
      range, context.Mode(), kValueRangeNonNegative);
  if (!height)
    height = width;

  return MakeGarbageCollected<CSSValuePair>(width, height,
                                            CSSValuePair::kDropIdenticalValues);
}

const CSSValue* ContentSize::CSSValueFromComputedStyleInternal(
    const ComputedStyle& style,
    const SVGComputedStyle&,
    const LayoutObject* layout_object,
    bool allow_visited_style) const {
  if (style.GetContentSize().IsNone())
    return CSSIdentifierValue::Create(CSSValueID::kNone);
  return MakeGarbageCollected<CSSValuePair>(
      ComputedStyleUtils::ZoomAdjustedPixelValueForLength(
          style.GetContentSize().GetWidth(), style),
      ComputedStyleUtils::ZoomAdjustedPixelValueForLength(
          style.GetContentSize().GetHeight(), style),
      CSSValuePair::kDropIdenticalValues);
}

namespace {

CSSValue* ConsumeAttr(CSSParserTokenRange args,
                      const CSSParserContext& context) {
  if (args.Peek().GetType() != kIdentToken)
    return nullptr;

  AtomicString attr_name =
      args.ConsumeIncludingWhitespace().Value().ToAtomicString();
  if (!args.AtEnd())
    return nullptr;

  if (context.IsHTMLDocument())
    attr_name = attr_name.LowerASCII();

  CSSFunctionValue* attr_value =
      MakeGarbageCollected<CSSFunctionValue>(CSSValueID::kAttr);
  attr_value->Append(*MakeGarbageCollected<CSSCustomIdentValue>(attr_name));
  return attr_value;
}

CSSValue* ConsumeCounterContent(CSSParserTokenRange args,
                                const CSSParserContext& context,
                                bool counters) {
  CSSCustomIdentValue* identifier =
      css_property_parser_helpers::ConsumeCustomIdent(args, context);
  if (!identifier)
    return nullptr;

  CSSStringValue* separator = nullptr;
  if (!counters) {
    separator = MakeGarbageCollected<CSSStringValue>(String());
  } else {
    if (!css_property_parser_helpers::ConsumeCommaIncludingWhitespace(args) ||
        args.Peek().GetType() != kStringToken)
      return nullptr;
    separator = MakeGarbageCollected<CSSStringValue>(
        args.ConsumeIncludingWhitespace().Value().ToString());
  }

  CSSIdentifierValue* list_style = nullptr;
  if (css_property_parser_helpers::ConsumeCommaIncludingWhitespace(args)) {
    CSSValueID id = args.Peek().Id();
    if ((id != CSSValueID::kNone &&
         (id < CSSValueID::kDisc || id > CSSValueID::kKatakanaIroha)))
      return nullptr;
    list_style = css_property_parser_helpers::ConsumeIdent(args);
  } else {
    list_style = CSSIdentifierValue::Create(CSSValueID::kDecimal);
  }

  if (!args.AtEnd())
    return nullptr;
  return MakeGarbageCollected<cssvalue::CSSCounterValue>(identifier, list_style,
                                                         separator);
}

}  // namespace

const CSSValue* Content::ParseSingleValue(CSSParserTokenRange& range,
                                          const CSSParserContext& context,
                                          const CSSParserLocalContext&) const {
  if (css_property_parser_helpers::IdentMatches<CSSValueID::kNone,
                                                CSSValueID::kNormal>(
          range.Peek().Id()))
    return css_property_parser_helpers::ConsumeIdent(range);

  CSSValueList* values = CSSValueList::CreateSpaceSeparated();
  CSSValueList* outer_list = CSSValueList::CreateSlashSeparated();
  bool alt_text_present = false;
  do {
    CSSValue* parsed_value =
        css_property_parser_helpers::ConsumeImage(range, &context);
    if (!parsed_value) {
      parsed_value = css_property_parser_helpers::ConsumeIdent<
          CSSValueID::kOpenQuote, CSSValueID::kCloseQuote,
          CSSValueID::kNoOpenQuote, CSSValueID::kNoCloseQuote>(range);
    }
    if (!parsed_value)
      parsed_value = css_property_parser_helpers::ConsumeString(range);
    if (!parsed_value) {
      if (range.Peek().FunctionId() == CSSValueID::kAttr) {
        parsed_value = ConsumeAttr(
            css_property_parser_helpers::ConsumeFunction(range), context);
      } else if (range.Peek().FunctionId() == CSSValueID::kCounter) {
        parsed_value = ConsumeCounterContent(
            css_property_parser_helpers::ConsumeFunction(range), context,
            false);
      } else if (range.Peek().FunctionId() == CSSValueID::kCounters) {
        parsed_value = ConsumeCounterContent(
            css_property_parser_helpers::ConsumeFunction(range), context, true);
      }
    }
    if (!parsed_value) {
      if (RuntimeEnabledFeatures::CSSAltTextEnabled() &&
          css_property_parser_helpers::ConsumeSlashIncludingWhitespace(range)) {
        // No values were parsed before the slash, so nothing to apply the
        // alternative text to.
        if (!values->length())
          return nullptr;
        alt_text_present = true;
      } else {
        return nullptr;
      }
    } else {
      values->Append(*parsed_value);
    }
  } while (!range.AtEnd() && !alt_text_present);
  outer_list->Append(*values);
  if (alt_text_present) {
    CSSStringValue* alt_text =
        css_property_parser_helpers::ConsumeString(range);
    if (!alt_text)
      return nullptr;
    outer_list->Append(*alt_text);
  }
  return outer_list;
}

const CSSValue* Content::CSSValueFromComputedStyleInternal(
    const ComputedStyle& style,
    const SVGComputedStyle&,
    const LayoutObject*,
    bool allow_visited_style) const {
  return ComputedStyleUtils::ValueForContentData(style, allow_visited_style);
}

void Content::ApplyInitial(StyleResolverState& state) const {
  state.Style()->SetContent(nullptr);
}

void Content::ApplyInherit(StyleResolverState& state) const {
  // FIXME: In CSS3, it will be possible to inherit content. In CSS2 it is not.
  // This note is a reminder that eventually "inherit" needs to be supported.
}

void Content::ApplyValue(StyleResolverState& state,
                         const CSSValue& value) const {
  if (auto* identifier_value = DynamicTo<CSSIdentifierValue>(value)) {
    DCHECK(identifier_value->GetValueID() == CSSValueID::kNormal ||
           identifier_value->GetValueID() == CSSValueID::kNone);
    state.Style()->SetContent(nullptr);
    return;
  }
  const CSSValueList& outer_list = To<CSSValueList>(value);
  ContentData* first_content = nullptr;
  ContentData* prev_content = nullptr;
  for (auto& item : To<CSSValueList>(outer_list.Item(0))) {
    ContentData* next_content = nullptr;
    if (item->IsImageGeneratorValue() || item->IsImageSetValue() ||
        item->IsImageValue()) {
      next_content = ContentData::Create(
          state.GetStyleImage(CSSPropertyID::kContent, *item));
    } else if (const auto* counter_value =
                   DynamicTo<cssvalue::CSSCounterValue>(item.Get())) {
      const auto list_style_type =
          CssValueIDToPlatformEnum<EListStyleType>(counter_value->ListStyle());
      std::unique_ptr<CounterContent> counter =
          std::make_unique<CounterContent>(
              AtomicString(counter_value->Identifier()), list_style_type,
              AtomicString(counter_value->Separator()));
      next_content = ContentData::Create(std::move(counter));
    } else if (auto* item_identifier_value =
                   DynamicTo<CSSIdentifierValue>(item.Get())) {
      QuoteType quote_type;
      switch (item_identifier_value->GetValueID()) {
        default:
          NOTREACHED();
          FALLTHROUGH;
        case CSSValueID::kOpenQuote:
          quote_type = QuoteType::kOpen;
          break;
        case CSSValueID::kCloseQuote:
          quote_type = QuoteType::kClose;
          break;
        case CSSValueID::kNoOpenQuote:
          quote_type = QuoteType::kNoOpen;
          break;
        case CSSValueID::kNoCloseQuote:
          quote_type = QuoteType::kNoClose;
          break;
      }
      next_content = ContentData::Create(quote_type);
    } else {
      String string;
      if (const auto* function_value =
              DynamicTo<CSSFunctionValue>(item.Get())) {
        DCHECK_EQ(function_value->FunctionType(), CSSValueID::kAttr);
        state.Style()->SetHasAttrContent();
        // TODO: Can a namespace be specified for an attr(foo)?
        QualifiedName attr(
            g_null_atom,
            To<CSSCustomIdentValue>(function_value->Item(0)).Value(),
            g_null_atom);
        const AtomicString& attr_value = state.GetElement().getAttribute(attr);
        string = attr_value.IsNull() ? g_empty_string : attr_value.GetString();
      } else {
        string = To<CSSStringValue>(*item).Value();
      }
      if (prev_content && prev_content->IsText()) {
        TextContentData* text_content = To<TextContentData>(prev_content);
        text_content->SetText(text_content->GetText() + string);
        continue;
      }
      next_content = ContentData::Create(string);
    }

    if (!first_content)
      first_content = next_content;
    else
      prev_content->SetNext(next_content);

    prev_content = next_content;
  }
  // If alt text was provided, it will be present as the final element of the
  // outer list.
  if (outer_list.length() > 1) {
    String string = To<CSSStringValue>(outer_list.Item(1)).Value();
    ContentData* alt_content = ContentData::CreateAltText(string);
    prev_content->SetNext(alt_content);
  }
  DCHECK(first_content);
  state.Style()->SetContent(first_content);
}

const int kCounterIncrementDefaultValue = 1;

const CSSValue* CounterIncrement::ParseSingleValue(
    CSSParserTokenRange& range,
    const CSSParserContext& context,
    const CSSParserLocalContext&) const {
  return css_parsing_utils::ConsumeCounter(range, context,
                                           kCounterIncrementDefaultValue);
}

const CSSValue* CounterIncrement::CSSValueFromComputedStyleInternal(
    const ComputedStyle& style,
    const SVGComputedStyle&,
    const LayoutObject*,
    bool allow_visited_style) const {
  return ComputedStyleUtils::ValueForCounterDirectives(style, true);
}

const int kCounterResetDefaultValue = 0;

const CSSValue* CounterReset::ParseSingleValue(
    CSSParserTokenRange& range,
    const CSSParserContext& context,
    const CSSParserLocalContext&) const {
  return css_parsing_utils::ConsumeCounter(range, context,
                                           kCounterResetDefaultValue);
}

const CSSValue* CounterReset::CSSValueFromComputedStyleInternal(
    const ComputedStyle& style,
    const SVGComputedStyle&,
    const LayoutObject*,
    bool allow_visited_style) const {
  return ComputedStyleUtils::ValueForCounterDirectives(style, false);
}

const CSSValue* Cursor::ParseSingleValue(CSSParserTokenRange& range,
                                         const CSSParserContext& context,
                                         const CSSParserLocalContext&) const {
  bool in_quirks_mode = IsQuirksModeBehavior(context.Mode());
  CSSValueList* list = nullptr;
  while (
      CSSValue* image = css_property_parser_helpers::ConsumeImage(
          range, &context,
          css_property_parser_helpers::ConsumeGeneratedImagePolicy::kForbid)) {
    double num;
    IntPoint hot_spot(-1, -1);
    bool hot_spot_specified = false;
    if (css_property_parser_helpers::ConsumeNumberRaw(range, num)) {
      hot_spot.SetX(clampTo<int>(num));
      if (!css_property_parser_helpers::ConsumeNumberRaw(range, num))
        return nullptr;
      hot_spot.SetY(clampTo<int>(num));
      hot_spot_specified = true;
    }

    if (!list)
      list = CSSValueList::CreateCommaSeparated();

    list->Append(*MakeGarbageCollected<cssvalue::CSSCursorImageValue>(
        *image, hot_spot_specified, hot_spot));
    if (!css_property_parser_helpers::ConsumeCommaIncludingWhitespace(range))
      return nullptr;
  }

  CSSValueID id = range.Peek().Id();
  if (!range.AtEnd()) {
    if (id == CSSValueID::kWebkitZoomIn)
      context.Count(WebFeature::kPrefixedCursorZoomIn);
    else if (id == CSSValueID::kWebkitZoomOut)
      context.Count(WebFeature::kPrefixedCursorZoomOut);
    else if (id == CSSValueID::kWebkitGrab)
      context.Count(WebFeature::kPrefixedCursorGrab);
    else if (id == CSSValueID::kWebkitGrabbing)
      context.Count(WebFeature::kPrefixedCursorGrabbing);
  }
  CSSValue* cursor_type = nullptr;
  if (id == CSSValueID::kHand) {
    if (!in_quirks_mode)  // Non-standard behavior
      return nullptr;
    cursor_type = CSSIdentifierValue::Create(CSSValueID::kPointer);
    range.ConsumeIncludingWhitespace();
  } else if ((id >= CSSValueID::kAuto && id <= CSSValueID::kWebkitZoomOut) ||
             id == CSSValueID::kCopy || id == CSSValueID::kNone) {
    cursor_type = css_property_parser_helpers::ConsumeIdent(range);
  } else {
    return nullptr;
  }

  if (!list)
    return cursor_type;
  list->Append(*cursor_type);
  return list;
}

const CSSValue* Cursor::CSSValueFromComputedStyleInternal(
    const ComputedStyle& style,
    const SVGComputedStyle&,
    const LayoutObject*,
    bool allow_visited_style) const {
  CSSValueList* list = nullptr;
  CursorList* cursors = style.Cursors();
  if (cursors && cursors->size() > 0) {
    list = CSSValueList::CreateCommaSeparated();
    for (const CursorData& cursor : *cursors) {
      if (StyleImage* image = cursor.GetImage()) {
        list->Append(*MakeGarbageCollected<cssvalue::CSSCursorImageValue>(
            *image->ComputedCSSValue(style, allow_visited_style),
            cursor.HotSpotSpecified(), cursor.HotSpot()));
      }
    }
  }
  CSSValue* value = CSSIdentifierValue::Create(style.Cursor());
  if (list) {
    list->Append(*value);
    return list;
  }
  return value;
}

void Cursor::ApplyInitial(StyleResolverState& state) const {
  state.Style()->ClearCursorList();
  state.Style()->SetCursor(ComputedStyleInitialValues::InitialCursor());
}

void Cursor::ApplyInherit(StyleResolverState& state) const {
  state.Style()->SetCursor(state.ParentStyle()->Cursor());
  state.Style()->SetCursorList(state.ParentStyle()->Cursors());
}

void Cursor::ApplyValue(StyleResolverState& state,
                        const CSSValue& value) const {
  state.Style()->ClearCursorList();
  if (auto* value_list = DynamicTo<CSSValueList>(value)) {
    state.Style()->SetCursor(ECursor::kAuto);
    for (const auto& item : *value_list) {
      if (const auto* cursor =
              DynamicTo<cssvalue::CSSCursorImageValue>(*item)) {
        const CSSValue& image = cursor->ImageValue();
        state.Style()->AddCursor(
            state.GetStyleImage(CSSPropertyID::kCursor, image),
            cursor->HotSpotSpecified(), cursor->HotSpot());
      } else {
        state.Style()->SetCursor(
            To<CSSIdentifierValue>(*item).ConvertTo<ECursor>());
      }
    }
  } else {
    state.Style()->SetCursor(
        To<CSSIdentifierValue>(value).ConvertTo<ECursor>());
  }
}

const CSSValue* Cx::ParseSingleValue(CSSParserTokenRange& range,
                                     const CSSParserContext& context,
                                     const CSSParserLocalContext&) const {
  return css_property_parser_helpers::ConsumeSVGGeometryPropertyLength(
      range, context, kValueRangeAll);
}

const CSSValue* Cx::CSSValueFromComputedStyleInternal(
    const ComputedStyle& style,
    const SVGComputedStyle& svg_style,
    const LayoutObject*,
    bool allow_visited_style) const {
  return ComputedStyleUtils::ZoomAdjustedPixelValueForLength(svg_style.Cx(),
                                                             style);
}

const CSSValue* Cy::ParseSingleValue(CSSParserTokenRange& range,
                                     const CSSParserContext& context,
                                     const CSSParserLocalContext&) const {
  return css_property_parser_helpers::ConsumeSVGGeometryPropertyLength(
      range, context, kValueRangeAll);
}

const CSSValue* Cy::CSSValueFromComputedStyleInternal(
    const ComputedStyle& style,
    const SVGComputedStyle& svg_style,
    const LayoutObject*,
    bool allow_visited_style) const {
  return ComputedStyleUtils::ZoomAdjustedPixelValueForLength(svg_style.Cy(),
                                                             style);
}

const CSSValue* D::ParseSingleValue(CSSParserTokenRange& range,
                                    const CSSParserContext&,
                                    const CSSParserLocalContext&) const {
  return css_parsing_utils::ConsumePathOrNone(range);
}

const CSSValue* D::CSSValueFromComputedStyleInternal(
    const ComputedStyle& style,
    const SVGComputedStyle& svg_style,
    const LayoutObject*,
    bool allow_visited_style) const {
  if (const StylePath* style_path = svg_style.D())
    return style_path->ComputedCSSValue();
  return CSSIdentifierValue::Create(CSSValueID::kNone);
}

const CSSValue* Direction::CSSValueFromComputedStyleInternal(
    const ComputedStyle& style,
    const SVGComputedStyle&,
    const LayoutObject*,
    bool allow_visited_style) const {
  return CSSIdentifierValue::Create(style.Direction());
}

void Direction::ApplyValue(StyleResolverState& state,
                           const CSSValue& value) const {
  state.Style()->SetDirection(
      To<CSSIdentifierValue>(value).ConvertTo<TextDirection>());
}

const CSSValue* Display::ParseSingleValue(CSSParserTokenRange& range,
                                          const CSSParserContext& context,
                                          const CSSParserLocalContext&) const {
  // NOTE: All the keyword values for the display property are handled by the
  // CSSParserFastPaths.
  if (!RuntimeEnabledFeatures::CSSLayoutAPIEnabled())
    return nullptr;

  if (!context.IsSecureContext())
    return nullptr;

  CSSValueID function = range.Peek().FunctionId();
  if (function != CSSValueID::kLayout && function != CSSValueID::kInlineLayout)
    return nullptr;

  CSSParserTokenRange range_copy = range;
  CSSParserTokenRange args =
      css_property_parser_helpers::ConsumeFunction(range_copy);
  CSSCustomIdentValue* name =
      css_property_parser_helpers::ConsumeCustomIdent(args, context);

  // If we didn't get a custom-ident or didn't exhaust the function arguments
  // return nothing.
  if (!name || !args.AtEnd())
    return nullptr;

  range = range_copy;
  return MakeGarbageCollected<cssvalue::CSSLayoutFunctionValue>(
      name, /* is_inline */ function == CSSValueID::kInlineLayout);
}

const CSSValue* Display::CSSValueFromComputedStyleInternal(
    const ComputedStyle& style,
    const SVGComputedStyle&,
    const LayoutObject*,
    bool allow_visited_style) const {
  if (style.IsDisplayLayoutCustomBox()) {
    return MakeGarbageCollected<cssvalue::CSSLayoutFunctionValue>(
        MakeGarbageCollected<CSSCustomIdentValue>(
            style.DisplayLayoutCustomName()),
        style.IsDisplayInlineType());
  }

  return CSSIdentifierValue::Create(style.Display());
}

void Display::ApplyInitial(StyleResolverState& state) const {
  state.Style()->SetDisplay(ComputedStyleInitialValues::InitialDisplay());
  state.Style()->SetDisplayLayoutCustomName(
      ComputedStyleInitialValues::InitialDisplayLayoutCustomName());
}

void Display::ApplyInherit(StyleResolverState& state) const {
  state.Style()->SetDisplay(state.ParentStyle()->Display());
  state.Style()->SetDisplayLayoutCustomName(
      state.ParentStyle()->DisplayLayoutCustomName());
}

void Display::ApplyValue(StyleResolverState& state,
                         const CSSValue& value) const {
  if (auto* identifier_value = DynamicTo<CSSIdentifierValue>(value)) {
    state.Style()->SetDisplay(identifier_value->ConvertTo<EDisplay>());
    state.Style()->SetDisplayLayoutCustomName(
        ComputedStyleInitialValues::InitialDisplayLayoutCustomName());
    return;
  }

  const auto& layout_function_value =
      To<cssvalue::CSSLayoutFunctionValue>(value);

  EDisplay display = layout_function_value.IsInline()
                         ? EDisplay::kInlineLayoutCustom
                         : EDisplay::kLayoutCustom;
  state.Style()->SetDisplay(display);
  state.Style()->SetDisplayLayoutCustomName(layout_function_value.GetName());
}

const CSSValue* DominantBaseline::CSSValueFromComputedStyleInternal(
    const ComputedStyle& style,
    const SVGComputedStyle& svg_style,
    const LayoutObject*,
    bool allow_visited_style) const {
  return CSSIdentifierValue::Create(svg_style.DominantBaseline());
}

const CSSValue* EmptyCells::CSSValueFromComputedStyleInternal(
    const ComputedStyle& style,
    const SVGComputedStyle&,
    const LayoutObject*,
    bool allow_visited_style) const {
  return CSSIdentifierValue::Create(style.EmptyCells());
}

const CSSValue* Fill::ParseSingleValue(CSSParserTokenRange& range,
                                       const CSSParserContext& context,
                                       const CSSParserLocalContext&) const {
  return css_parsing_utils::ParsePaintStroke(range, context);
}

const CSSValue* Fill::CSSValueFromComputedStyleInternal(
    const ComputedStyle& style,
    const SVGComputedStyle& svg_style,
    const LayoutObject*,
    bool allow_visited_style) const {
  return ComputedStyleUtils::AdjustSVGPaintForCurrentColor(
      svg_style.FillPaint(), style.GetColor());
}

const CSSValue* FillOpacity::ParseSingleValue(
    CSSParserTokenRange& range,
    const CSSParserContext& context,
    const CSSParserLocalContext&) const {
  return css_property_parser_helpers::ConsumeAlphaValue(range);
}

const CSSValue* FillOpacity::CSSValueFromComputedStyleInternal(
    const ComputedStyle&,
    const SVGComputedStyle& svg_style,
    const LayoutObject*,
    bool allow_visited_style) const {
  return CSSNumericLiteralValue::Create(svg_style.FillOpacity(),
                                        CSSPrimitiveValue::UnitType::kNumber);
}

const CSSValue* FillRule::CSSValueFromComputedStyleInternal(
    const ComputedStyle& style,
    const SVGComputedStyle& svg_style,
    const LayoutObject*,
    bool allow_visited_style) const {
  return CSSIdentifierValue::Create(svg_style.FillRule());
}

const CSSValue* Filter::ParseSingleValue(CSSParserTokenRange& range,
                                         const CSSParserContext& context,
                                         const CSSParserLocalContext&) const {
  return css_property_parser_helpers::ConsumeFilterFunctionList(range, context);
}

const CSSValue* Filter::CSSValueFromComputedStyleInternal(
    const ComputedStyle& style,
    const SVGComputedStyle&,
    const LayoutObject*,
    bool allow_visited_style) const {
  return ComputedStyleUtils::ValueForFilter(style, style.Filter());
}

const CSSValue* FlexBasis::ParseSingleValue(
    CSSParserTokenRange& range,
    const CSSParserContext& context,
    const CSSParserLocalContext&) const {
  // FIXME: Support intrinsic dimensions too.
  if (range.Peek().Id() == CSSValueID::kAuto)
    return css_property_parser_helpers::ConsumeIdent(range);
  return css_property_parser_helpers::ConsumeLengthOrPercent(
      range, context.Mode(), kValueRangeNonNegative);
}

const CSSValue* FlexBasis::CSSValueFromComputedStyleInternal(
    const ComputedStyle& style,
    const SVGComputedStyle&,
    const LayoutObject*,
    bool allow_visited_style) const {
  return ComputedStyleUtils::ZoomAdjustedPixelValueForLength(style.FlexBasis(),
                                                             style);
}

const CSSValue* FlexDirection::CSSValueFromComputedStyleInternal(
    const ComputedStyle& style,
    const SVGComputedStyle&,
    const LayoutObject*,
    bool allow_visited_style) const {
  return CSSIdentifierValue::Create(style.FlexDirection());
}

const CSSValue* FlexGrow::ParseSingleValue(CSSParserTokenRange& range,
                                           const CSSParserContext&,
                                           const CSSParserLocalContext&) const {
  return css_property_parser_helpers::ConsumeNumber(range,
                                                    kValueRangeNonNegative);
}

const CSSValue* FlexGrow::CSSValueFromComputedStyleInternal(
    const ComputedStyle& style,
    const SVGComputedStyle&,
    const LayoutObject*,
    bool allow_visited_style) const {
  return CSSNumericLiteralValue::Create(style.FlexGrow(),
                                        CSSPrimitiveValue::UnitType::kNumber);
}

const CSSValue* FlexShrink::ParseSingleValue(
    CSSParserTokenRange& range,
    const CSSParserContext&,
    const CSSParserLocalContext&) const {
  return css_property_parser_helpers::ConsumeNumber(range,
                                                    kValueRangeNonNegative);
}

const CSSValue* FlexShrink::CSSValueFromComputedStyleInternal(
    const ComputedStyle& style,
    const SVGComputedStyle&,
    const LayoutObject*,
    bool allow_visited_style) const {
  return CSSNumericLiteralValue::Create(style.FlexShrink(),
                                        CSSPrimitiveValue::UnitType::kNumber);
}

const CSSValue* FlexWrap::CSSValueFromComputedStyleInternal(
    const ComputedStyle& style,
    const SVGComputedStyle&,
    const LayoutObject*,
    bool allow_visited_style) const {
  return CSSIdentifierValue::Create(style.FlexWrap());
}

const CSSValue* Float::CSSValueFromComputedStyleInternal(
    const ComputedStyle& style,
    const SVGComputedStyle&,
    const LayoutObject*,
    bool allow_visited_style) const {
  if (style.HasOutOfFlowPosition())
    return CSSIdentifierValue::Create(CSSValueID::kNone);
  return CSSIdentifierValue::Create(style.Floating());
}

const CSSValue* FloodColor::ParseSingleValue(
    CSSParserTokenRange& range,
    const CSSParserContext& context,
    const CSSParserLocalContext&) const {
  return css_property_parser_helpers::ConsumeColor(range, context.Mode());
}

const blink::Color FloodColor::ColorIncludingFallback(
    bool visited_link,
    const ComputedStyle& style) const {
  StyleColor result = style.FloodColor();
  if (!result.IsCurrentColor())
    return result.GetColor();
  return visited_link ? style.InternalVisitedColor() : style.GetColor();
}

const CSSValue* FloodColor::CSSValueFromComputedStyleInternal(
    const ComputedStyle& style,
    const SVGComputedStyle&,
    const LayoutObject*,
    bool allow_visited_style