gecko-dev/layout/style/ServoBindings.h

/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
/* 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 http://mozilla.org/MPL/2.0/. */

/* FFI functions for Gecko to call into Servo */

#ifndef mozilla_ServoBindings_h
#define mozilla_ServoBindings_h

#include <stdint.h>

#include "mozilla/AtomArray.h"
#include "mozilla/css/SheetLoadData.h"
#include "mozilla/css/SheetParsingMode.h"
#include "mozilla/ServoBindingTypes.h"
#include "nsChangeHint.h"
#include "nsColor.h"
#include "nsCSSValue.h"

class gfxFontFeatureValueSet;
class nsAtom;
class nsSimpleContentList;
struct gfxFontFeature;

namespace mozilla {
  class SeenPtrs;
  class ServoElementSnapshotTable;
  class SharedFontList;
  class StyleSheet;
  enum class CSSPseudoElementType : uint8_t;
  enum class OriginFlags : uint8_t;
  struct Keyframe;

  namespace css {
    class LoaderReusableStyleSheets;
  }

  namespace gfx {
    struct FontVariation;
  }

  namespace dom {
    enum class IterationCompositeOperation : uint8_t;
  }
}

namespace nsStyleTransformMatrix {
  enum class MatrixTransformOperator: uint8_t;
}

extern "C" {

// Element data
void Servo_Element_ClearData(RawGeckoElementBorrowed node);

size_t Servo_Element_SizeOfExcludingThisAndCVs(
  mozilla::MallocSizeOf malloc_size_of,
  mozilla::MallocSizeOf malloc_enclosing_size_of,
  mozilla::SeenPtrs* seen_ptrs,
  RawGeckoElementBorrowed node);

bool Servo_Element_HasPrimaryComputedValues(RawGeckoElementBorrowed node);

ComputedStyleStrong Servo_Element_GetPrimaryComputedValues(
  RawGeckoElementBorrowed node);

bool Servo_Element_HasPseudoComputedValues(
  RawGeckoElementBorrowed node,
  size_t index);

ComputedStyleStrong Servo_Element_GetPseudoComputedValues(
  RawGeckoElementBorrowed node,
  size_t index);

bool Servo_Element_IsDisplayNone(RawGeckoElementBorrowed element);
bool Servo_Element_IsDisplayContents(RawGeckoElementBorrowed element);

bool Servo_Element_IsPrimaryStyleReusedViaRuleNode(
  RawGeckoElementBorrowed element);

void Servo_InvalidateStyleForDocStateChanges(
  RawGeckoElementBorrowed root,
  RawServoStyleSetBorrowed doc_styles,
  const nsTArray<RawServoAuthorStylesBorrowed>* non_document_styles,
  uint64_t aStatesChanged);

// Styleset and Stylesheet management

RawServoStyleSheetContentsStrong Servo_StyleSheet_FromUTF8Bytes(
  mozilla::css::Loader* loader,
  mozilla::StyleSheet* gecko_stylesheet,
  mozilla::css::SheetLoadData* load_data,
  const nsACString* bytes,
  mozilla::css::SheetParsingMode parsing_mode,
  RawGeckoURLExtraData* extra_data,
  uint32_t line_number_offset,
  nsCompatibility quirks_mode,
  mozilla::css::LoaderReusableStyleSheets* reusable_sheets,
  StyleUseCountersBorrowedOrNull use_counters);

void Servo_StyleSheet_FromUTF8BytesAsync(
  mozilla::css::SheetLoadDataHolder* load_data,
  RawGeckoURLExtraData* extra_data,
  const nsACString* bytes,
  mozilla::css::SheetParsingMode parsing_mode,
  uint32_t line_number_offset,
  nsCompatibility quirks_mode,
  bool should_record_use_counters);

RawServoStyleSheetContentsStrong Servo_StyleSheet_Empty(
  mozilla::css::SheetParsingMode parsing_mode);

bool Servo_StyleSheet_HasRules(RawServoStyleSheetContentsBorrowed sheet);

ServoCssRulesStrong Servo_StyleSheet_GetRules(
  RawServoStyleSheetContentsBorrowed sheet);

RawServoStyleSheetContentsStrong Servo_StyleSheet_Clone(
  RawServoStyleSheetContentsBorrowed sheet,
  const mozilla::StyleSheet* reference_sheet);

size_t Servo_StyleSheet_SizeOfIncludingThis(
  mozilla::MallocSizeOf malloc_size_of,
  mozilla::MallocSizeOf malloc_enclosing_size_of,
  RawServoStyleSheetContentsBorrowed sheet);

void Servo_StyleSheet_GetSourceMapURL(
  RawServoStyleSheetContentsBorrowed sheet,
  nsAString* result);

void Servo_StyleSheet_GetSourceURL(
  RawServoStyleSheetContentsBorrowed sheet,
  nsAString* result);

// We'd like to return `OriginFlags` here, but bindgen bitfield enums don't
// work as return values with the Linux 32-bit ABI at the moment because
// they wrap the value in a struct.
uint8_t Servo_StyleSheet_GetOrigin(RawServoStyleSheetContentsBorrowed sheet);

RawServoStyleSet* Servo_StyleSet_Init(RawGeckoPresContextBorrowed pres_context);
void Servo_StyleSet_RebuildCachedData(RawServoStyleSetBorrowed set);

// We'd like to return `OriginFlags` here, but bindgen bitfield enums don't
// work as return values with the Linux 32-bit ABI at the moment because
// they wrap the value in a struct.
mozilla::MediumFeaturesChangedResult Servo_StyleSet_MediumFeaturesChanged(
  RawServoStyleSetBorrowed document_set,
  nsTArray<RawServoAuthorStylesBorrowedMut>* non_document_sets,
  bool may_affect_default_style);

void Servo_StyleSet_Drop(RawServoStyleSetOwned set);
void Servo_StyleSet_CompatModeChanged(RawServoStyleSetBorrowed raw_data);

void Servo_StyleSet_AppendStyleSheet(
  RawServoStyleSetBorrowed set,
  const mozilla::StyleSheet* gecko_sheet);

void Servo_StyleSet_PrependStyleSheet(
  RawServoStyleSetBorrowed set,
  const mozilla::StyleSheet* gecko_sheet);

void Servo_StyleSet_RemoveStyleSheet(
  RawServoStyleSetBorrowed set,
  const mozilla::StyleSheet* gecko_sheet);

void Servo_StyleSet_InsertStyleSheetBefore(
  RawServoStyleSetBorrowed set,
  const mozilla::StyleSheet* gecko_sheet,
  const mozilla::StyleSheet* before);

void Servo_StyleSet_FlushStyleSheets(
  RawServoStyleSetBorrowed set,
  RawGeckoElementBorrowedOrNull doc_elem,
  const mozilla::ServoElementSnapshotTable* snapshots);

void Servo_StyleSet_SetAuthorStyleDisabled(
  RawServoStyleSetBorrowed set,
  bool author_style_disabled);

void Servo_StyleSet_NoteStyleSheetsChanged(
  RawServoStyleSetBorrowed set,
  mozilla::OriginFlags changed_origins);

bool Servo_StyleSet_GetKeyframesForName(
  RawServoStyleSetBorrowed set,
  RawGeckoElementBorrowed element,
  ComputedStyleBorrowed style,
  nsAtom* name,
  nsTimingFunctionBorrowed timing_function,
  RawGeckoKeyframeListBorrowedMut keyframe_list);

void Servo_StyleSet_GetFontFaceRules(
  RawServoStyleSetBorrowed set,
  RawGeckoFontFaceRuleListBorrowedMut list);

const RawServoCounterStyleRule* Servo_StyleSet_GetCounterStyleRule(
  RawServoStyleSetBorrowed set,
  nsAtom* name);

// This function may return nullptr or gfxFontFeatureValueSet with zero
// references.
gfxFontFeatureValueSet* Servo_StyleSet_BuildFontFeatureValueSet(
  RawServoStyleSetBorrowed set);

ComputedStyleStrong Servo_StyleSet_ResolveForDeclarations(
  RawServoStyleSetBorrowed set,
  ComputedStyleBorrowedOrNull parent_style,
  RawServoDeclarationBlockBorrowed declarations);

void Servo_SelectorList_Drop(RawServoSelectorListOwned selector_list);
RawServoSelectorList* Servo_SelectorList_Parse(const nsACString* selector_list);
RawServoSourceSizeList* Servo_SourceSizeList_Parse(const nsACString* value);

int32_t Servo_SourceSizeList_Evaluate(
  RawServoStyleSetBorrowed set,
  RawServoSourceSizeListBorrowedOrNull);

void Servo_SourceSizeList_Drop(RawServoSourceSizeListOwned);

bool Servo_SelectorList_Matches(
  RawGeckoElementBorrowed,
  RawServoSelectorListBorrowed);

const RawGeckoElement* Servo_SelectorList_Closest(
  RawGeckoElementBorrowed,
  RawServoSelectorListBorrowed);

const RawGeckoElement* Servo_SelectorList_QueryFirst(
  RawGeckoNodeBorrowed,
  RawServoSelectorListBorrowed,
  bool may_use_invalidation);

void Servo_SelectorList_QueryAll(
  RawGeckoNodeBorrowed,
  RawServoSelectorListBorrowed,
  nsSimpleContentList* content_list,
  bool may_use_invalidation);

void Servo_StyleSet_AddSizeOfExcludingThis(
  mozilla::MallocSizeOf malloc_size_of,
  mozilla::MallocSizeOf malloc_enclosing_size_of,
  mozilla::ServoStyleSetSizes* sizes,
  RawServoStyleSetBorrowed set);

void Servo_UACache_AddSizeOf(
  mozilla::MallocSizeOf malloc_size_of,
  mozilla::MallocSizeOf malloc_enclosing_size_of,
  mozilla::ServoStyleSetSizes* sizes);

// AuthorStyles

RawServoAuthorStyles* Servo_AuthorStyles_Create();
void Servo_AuthorStyles_Drop(RawServoAuthorStylesOwned self);

// TODO(emilio): These will need to take a master style set to implement
// invalidation for Shadow DOM.
void Servo_AuthorStyles_AppendStyleSheet(
  RawServoAuthorStylesBorrowedMut self,
  const mozilla::StyleSheet* gecko_sheet);

void Servo_AuthorStyles_RemoveStyleSheet(
  RawServoAuthorStylesBorrowedMut self,
  const mozilla::StyleSheet* gecko_sheet);

void Servo_AuthorStyles_InsertStyleSheetBefore(
  RawServoAuthorStylesBorrowedMut self,
  const mozilla::StyleSheet* gecko_sheet,
  const mozilla::StyleSheet* before);

void Servo_AuthorStyles_ForceDirty(RawServoAuthorStylesBorrowedMut self);

// TODO(emilio): This will need to take an element and a master style set to
// implement invalidation for Shadow DOM.
void Servo_AuthorStyles_Flush(
  RawServoAuthorStylesBorrowedMut self,
  RawServoStyleSetBorrowed document_styles);

size_t Servo_AuthorStyles_SizeOfIncludingThis(
  mozilla::MallocSizeOf malloc_size_of,
  mozilla::MallocSizeOf malloc_enclosing_size_of,
  RawServoAuthorStylesBorrowed self);

void Servo_ComputedStyle_AddRef(ComputedStyleBorrowed ctx);

void Servo_ComputedStyle_Release(ComputedStyleBorrowed ctx);

bool Servo_StyleSet_MightHaveAttributeDependency(
  RawServoStyleSetBorrowed set,
  RawGeckoElementBorrowed element,
  nsAtom* local_name);

bool Servo_StyleSet_HasStateDependency(
  RawServoStyleSetBorrowed set,
  RawGeckoElementBorrowed element,
  uint64_t state);

bool Servo_StyleSet_HasDocumentStateDependency(
  RawServoStyleSetBorrowed set,
  uint64_t state);

// CSSRuleList

void Servo_CssRules_ListTypes(
  ServoCssRulesBorrowed rules,
  nsTArrayBorrowed_uintptr_t result);

nsresult Servo_CssRules_InsertRule(
  ServoCssRulesBorrowed rules,
  RawServoStyleSheetContentsBorrowed sheet,
  const nsACString* rule,
  uint32_t index,
  bool nested,
  mozilla::css::Loader* loader,
  mozilla::StyleSheet* gecko_stylesheet,
  uint16_t* rule_type);

nsresult Servo_CssRules_DeleteRule(ServoCssRulesBorrowed rules, uint32_t index);

// CSS Rules

#define BASIC_RULE_FUNCS_WITHOUT_GETTER(type_)                             \
  void Servo_##type_##_Debug(                                              \
    RawServo##type_##Borrowed rule,                                        \
    nsACString* result);                                                   \
  void Servo_##type_##_GetCssText(                                         \
    RawServo##type_##Borrowed rule,                                        \
    nsAString* result);

#define BASIC_RULE_FUNCS(type_)                                           \
  RawServo##type_##RuleStrong Servo_CssRules_Get##type_##RuleAt(          \
    ServoCssRulesBorrowed rules,                                          \
    uint32_t index,                                                       \
    uint32_t* line,                                                       \
    uint32_t* column);                                                    \
  BASIC_RULE_FUNCS_WITHOUT_GETTER(type_##Rule)

#define GROUP_RULE_FUNCS(type_)                                           \
  BASIC_RULE_FUNCS(type_)                                                 \
  ServoCssRulesStrong Servo_##type_##Rule_GetRules(                       \
    RawServo##type_##RuleBorrowed rule);

BASIC_RULE_FUNCS(Style)
BASIC_RULE_FUNCS(Import)
BASIC_RULE_FUNCS_WITHOUT_GETTER(Keyframe)
BASIC_RULE_FUNCS(Keyframes)
GROUP_RULE_FUNCS(Media)
GROUP_RULE_FUNCS(MozDocument)
BASIC_RULE_FUNCS(Namespace)
BASIC_RULE_FUNCS(Page)
GROUP_RULE_FUNCS(Supports)
BASIC_RULE_FUNCS(FontFeatureValues)
BASIC_RULE_FUNCS(FontFace)
BASIC_RULE_FUNCS(CounterStyle)

#undef GROUP_RULE_FUNCS
#undef BASIC_RULE_FUNCS
#undef BASIC_RULE_FUNCS_WITHOUT_GETTER

RawServoDeclarationBlockStrong Servo_StyleRule_GetStyle(
  RawServoStyleRuleBorrowed rule);

void Servo_StyleRule_SetStyle(
  RawServoStyleRuleBorrowed rule,
  RawServoDeclarationBlockBorrowed declarations);

void Servo_StyleRule_GetSelectorText(
  RawServoStyleRuleBorrowed rule,
  nsAString* result);

void Servo_StyleRule_GetSelectorTextAtIndex(
  RawServoStyleRuleBorrowed rule,
  uint32_t index,
  nsAString* result);

void Servo_StyleRule_GetSpecificityAtIndex(
  RawServoStyleRuleBorrowed rule,
  uint32_t index,
  uint64_t* specificity);

void Servo_StyleRule_GetSelectorCount(
  RawServoStyleRuleBorrowed rule,
  uint32_t* count);

bool Servo_StyleRule_SelectorMatchesElement(
  RawServoStyleRuleBorrowed,
  RawGeckoElementBorrowed,
  uint32_t index,
  mozilla::CSSPseudoElementType pseudo_type);

bool Servo_StyleRule_SetSelectorText(
  RawServoStyleSheetContentsBorrowed sheet,
  RawServoStyleRuleBorrowed rule,
  const nsAString* text);

void Servo_ImportRule_GetHref(
  RawServoImportRuleBorrowed rule,
  nsAString* result);

const mozilla::StyleSheet* Servo_ImportRule_GetSheet(
  RawServoImportRuleBorrowed rule);

void Servo_ImportRule_SetSheet(
  RawServoImportRuleBorrowed rule,
  mozilla::StyleSheet* sheet);

void Servo_Keyframe_GetKeyText(
  RawServoKeyframeBorrowed keyframe,
  nsAString* result);

// Returns whether it successfully changes the key text.
bool Servo_Keyframe_SetKeyText(
  RawServoKeyframeBorrowed keyframe,
  const nsACString* text);

RawServoDeclarationBlockStrong Servo_Keyframe_GetStyle(
  RawServoKeyframeBorrowed keyframe);

void Servo_Keyframe_SetStyle(
  RawServoKeyframeBorrowed keyframe,
  RawServoDeclarationBlockBorrowed declarations);

nsAtom* Servo_KeyframesRule_GetName(RawServoKeyframesRuleBorrowed rule);

// This method takes an addrefed nsAtom.
void Servo_KeyframesRule_SetName(
  RawServoKeyframesRuleBorrowed rule,
  nsAtom* name);

uint32_t Servo_KeyframesRule_GetCount(RawServoKeyframesRuleBorrowed rule);

RawServoKeyframeStrong Servo_KeyframesRule_GetKeyframeAt(
  RawServoKeyframesRuleBorrowed rule,
  uint32_t index,
  uint32_t* line,
  uint32_t* column);

// Returns the index of the rule, max value of uint32_t if nothing found.
uint32_t Servo_KeyframesRule_FindRule(
  RawServoKeyframesRuleBorrowed rule,
  const nsACString* key);

// Returns whether it successfully appends the rule.
bool Servo_KeyframesRule_AppendRule(
  RawServoKeyframesRuleBorrowed rule,
  RawServoStyleSheetContentsBorrowed sheet,
  const nsACString* css);

void Servo_KeyframesRule_DeleteRule(
  RawServoKeyframesRuleBorrowed rule,
  uint32_t index);

RawServoMediaListStrong Servo_MediaRule_GetMedia(
  RawServoMediaRuleBorrowed rule);

nsAtom* Servo_NamespaceRule_GetPrefix(RawServoNamespaceRuleBorrowed rule);
nsAtom* Servo_NamespaceRule_GetURI(RawServoNamespaceRuleBorrowed rule);

RawServoDeclarationBlockStrong Servo_PageRule_GetStyle(
  RawServoPageRuleBorrowed rule);

void Servo_PageRule_SetStyle(
  RawServoPageRuleBorrowed rule,
  RawServoDeclarationBlockBorrowed declarations);

void Servo_SupportsRule_GetConditionText(
  RawServoSupportsRuleBorrowed rule,
  nsAString* result);

void Servo_MozDocumentRule_GetConditionText(
  RawServoMozDocumentRuleBorrowed rule,
  nsAString* result);

void Servo_FontFeatureValuesRule_GetFontFamily(
  RawServoFontFeatureValuesRuleBorrowed rule,
  nsAString* result);

void Servo_FontFeatureValuesRule_GetValueText(
  RawServoFontFeatureValuesRuleBorrowed rule,
  nsAString* result);

RawServoFontFaceRuleStrong Servo_FontFaceRule_CreateEmpty();

RawServoFontFaceRuleStrong Servo_FontFaceRule_Clone(
  RawServoFontFaceRuleBorrowed rule);

void Servo_FontFaceRule_GetSourceLocation(
  RawServoFontFaceRuleBorrowed rule,
  uint32_t* line,
  uint32_t* column);

uint32_t Servo_FontFaceRule_Length(RawServoFontFaceRuleBorrowed rule);

nsCSSFontDesc Servo_FontFaceRule_IndexGetter(
  RawServoFontFaceRuleBorrowed rule,
  uint32_t index);

void Servo_FontFaceRule_GetDeclCssText(
  RawServoFontFaceRuleBorrowed rule,
  nsAString* result);

bool Servo_FontFaceRule_GetFontWeight(
  RawServoFontFaceRuleBorrowed rule,
  mozilla::StyleComputedFontWeightRange* out);

bool Servo_FontFaceRule_GetFontDisplay(
  RawServoFontFaceRuleBorrowed rule,
  mozilla::StyleFontDisplay* out);

bool Servo_FontFaceRule_GetFontStyle(
  RawServoFontFaceRuleBorrowed rule,
  mozilla::StyleComputedFontStyleDescriptor* out);

bool Servo_FontFaceRule_GetFontStretch(
  RawServoFontFaceRuleBorrowed rule,
  mozilla::StyleComputedFontStretchRange* out);

bool Servo_FontFaceRule_GetFontLanguageOverride(
  RawServoFontFaceRuleBorrowed rule,
  mozilla::StyleFontLanguageOverride* out);

nsAtom* Servo_FontFaceRule_GetFamilyName(RawServoFontFaceRuleBorrowed rule);

const mozilla::StyleUnicodeRange* Servo_FontFaceRule_GetUnicodeRanges(
  RawServoFontFaceRuleBorrowed rule,
  size_t* out_len);

void Servo_FontFaceRule_GetSources(
  RawServoFontFaceRuleBorrowed rule,
  nsTArray<mozilla::StyleFontFaceSourceListComponent>* components);

void Servo_FontFaceRule_GetVariationSettings(
  RawServoFontFaceRuleBorrowed rule,
  nsTArray<mozilla::gfx::FontVariation>* out);

void Servo_FontFaceRule_GetFeatureSettings(
  RawServoFontFaceRuleBorrowed rule,
  nsTArray<gfxFontFeature>* out);

void Servo_FontFaceRule_GetDescriptorCssText(
  RawServoFontFaceRuleBorrowed rule,
  nsCSSFontDesc desc,
  nsAString* result);

bool Servo_FontFaceRule_SetDescriptor(
  RawServoFontFaceRuleBorrowed rule,
  nsCSSFontDesc desc,
  const nsACString* value,
  RawGeckoURLExtraData* data);

void Servo_FontFaceRule_ResetDescriptor(
  RawServoFontFaceRuleBorrowed rule,
  nsCSSFontDesc desc);

nsAtom* Servo_CounterStyleRule_GetName(RawServoCounterStyleRuleBorrowed rule);

bool Servo_CounterStyleRule_SetName(
  RawServoCounterStyleRuleBorrowed rule,
  const nsACString* name);

uint32_t Servo_CounterStyleRule_GetGeneration(
  RawServoCounterStyleRuleBorrowed rule);

uint8_t Servo_CounterStyleRule_GetSystem(RawServoCounterStyleRuleBorrowed rule);

nsAtom* Servo_CounterStyleRule_GetExtended(
  RawServoCounterStyleRuleBorrowed rule);

int32_t Servo_CounterStyleRule_GetFixedFirstValue(
  RawServoCounterStyleRuleBorrowed rule);

nsAtom* Servo_CounterStyleRule_GetFallback(
  RawServoCounterStyleRuleBorrowed rule);

void Servo_CounterStyleRule_GetDescriptor(
  RawServoCounterStyleRuleBorrowed rule,
  nsCSSCounterDesc desc,
  nsCSSValueBorrowedMut result);

void Servo_CounterStyleRule_GetDescriptorCssText(
  RawServoCounterStyleRuleBorrowed rule,
  nsCSSCounterDesc desc,
  nsAString* result);

bool Servo_CounterStyleRule_SetDescriptor(
  RawServoCounterStyleRuleBorrowed rule,
  nsCSSCounterDesc desc,
  const nsACString* value);

// Animations API

RawServoDeclarationBlockStrong Servo_ParseProperty(
  nsCSSPropertyID property,
  const nsACString* value,
  RawGeckoURLExtraData* data,
  mozilla::ParsingMode parsing_mode,
  nsCompatibility quirks_mode,
  mozilla::css::Loader* loader);

bool Servo_ParseEasing(
  const nsAString* easing,
  RawGeckoURLExtraData* data,
  nsTimingFunctionBorrowedMut output);

void Servo_SerializeEasing(
  nsTimingFunctionBorrowed easing,
  nsAString* output);

void Servo_GetComputedKeyframeValues(
  RawGeckoKeyframeListBorrowed keyframes,
  RawGeckoElementBorrowed element,
  ComputedStyleBorrowed style,
  RawServoStyleSetBorrowed set,
  RawGeckoComputedKeyframeValuesListBorrowedMut result);

RawServoAnimationValueStrong Servo_ComputedValues_ExtractAnimationValue(
  ComputedStyleBorrowed computed_values,
  nsCSSPropertyID property);

bool Servo_ComputedValues_SpecifiesAnimationsOrTransitions(
  ComputedStyleBorrowed computed_values);

bool Servo_Property_IsAnimatable(nsCSSPropertyID property);
bool Servo_Property_IsTransitionable(nsCSSPropertyID property);
bool Servo_Property_IsDiscreteAnimatable(nsCSSPropertyID property);

void Servo_GetProperties_Overriding_Animation(
  RawGeckoElementBorrowed,
  RawGeckoCSSPropertyIDListBorrowed,
  nsCSSPropertyIDSetBorrowedMut);

void Servo_MatrixTransform_Operate(
  nsStyleTransformMatrix::MatrixTransformOperator matrix_operator,
  const RawGeckoGfxMatrix4x4* from,
  const RawGeckoGfxMatrix4x4* to,
  double progress,
  RawGeckoGfxMatrix4x4* result);

void Servo_GetAnimationValues(
  RawServoDeclarationBlockBorrowed declarations,
  RawGeckoElementBorrowed element,
  ComputedStyleBorrowed style,
  RawServoStyleSetBorrowed style_set,
  RawGeckoServoAnimationValueListBorrowedMut animation_values);

// AnimationValues handling

RawServoAnimationValueStrong Servo_AnimationValues_Interpolate(
  RawServoAnimationValueBorrowed from,
  RawServoAnimationValueBorrowed to,
  double progress);

bool Servo_AnimationValues_IsInterpolable(
  RawServoAnimationValueBorrowed from,
  RawServoAnimationValueBorrowed to);

RawServoAnimationValueStrong Servo_AnimationValues_Add(
  RawServoAnimationValueBorrowed a,
  RawServoAnimationValueBorrowed b);

RawServoAnimationValueStrong Servo_AnimationValues_Accumulate(
  RawServoAnimationValueBorrowed a,
  RawServoAnimationValueBorrowed b,
  uint64_t count);

RawServoAnimationValueStrong Servo_AnimationValues_GetZeroValue(
  RawServoAnimationValueBorrowed value_to_match);

double Servo_AnimationValues_ComputeDistance(
  RawServoAnimationValueBorrowed from,
  RawServoAnimationValueBorrowed to);

void Servo_AnimationValue_Serialize(
  RawServoAnimationValueBorrowed value,
  nsCSSPropertyID property,
  nsAString* buffer);

float Servo_AnimationValue_GetOpacity(RawServoAnimationValueBorrowed value);
RawServoAnimationValueStrong Servo_AnimationValue_Opacity(float);

void Servo_AnimationValue_GetTransform(
  RawServoAnimationValueBorrowed value,
  RefPtr<nsCSSValueSharedList>* list);

RawServoAnimationValueStrong Servo_AnimationValue_Transform(
  const nsCSSValueSharedList& list);

bool Servo_AnimationValue_DeepEqual(
  RawServoAnimationValueBorrowed,
  RawServoAnimationValueBorrowed);

RawServoDeclarationBlockStrong Servo_AnimationValue_Uncompute(
  RawServoAnimationValueBorrowed value);

RawServoAnimationValueStrong Servo_AnimationValue_Compute(
  RawGeckoElementBorrowed element,
  RawServoDeclarationBlockBorrowed declarations,
  ComputedStyleBorrowed style,
  RawServoStyleSetBorrowed raw_data);

// Style attribute

RawServoDeclarationBlockStrong Servo_ParseStyleAttribute(
  const nsACString* data,
  RawGeckoURLExtraData* extra_data,
  nsCompatibility quirks_mode,
  mozilla::css::Loader* loader);

RawServoDeclarationBlockStrong Servo_DeclarationBlock_CreateEmpty();

RawServoDeclarationBlockStrong Servo_DeclarationBlock_Clone(
  RawServoDeclarationBlockBorrowed declarations);

bool Servo_DeclarationBlock_Equals(
  RawServoDeclarationBlockBorrowed a,
  RawServoDeclarationBlockBorrowed b);

void Servo_DeclarationBlock_GetCssText(
  RawServoDeclarationBlockBorrowed declarations,
  nsAString* result);

void Servo_DeclarationBlock_SerializeOneValue(
  RawServoDeclarationBlockBorrowed declarations,
  nsCSSPropertyID property,
  nsAString* buffer,
  ComputedStyleBorrowedOrNull computed_values,
  RawServoDeclarationBlockBorrowedOrNull custom_properties);

uint32_t Servo_DeclarationBlock_Count(
  RawServoDeclarationBlockBorrowed declarations);

bool Servo_DeclarationBlock_GetNthProperty(
  RawServoDeclarationBlockBorrowed declarations,
  uint32_t index,
  nsAString* result);

void Servo_DeclarationBlock_GetPropertyValue(
  RawServoDeclarationBlockBorrowed declarations,
  const nsACString* property,
  nsAString* value);

void Servo_DeclarationBlock_GetPropertyValueById(
  RawServoDeclarationBlockBorrowed declarations,
  nsCSSPropertyID property,
  nsAString* value);

bool Servo_DeclarationBlock_GetPropertyIsImportant(
  RawServoDeclarationBlockBorrowed declarations,
  const nsACString* property);

bool Servo_DeclarationBlock_SetProperty(
  RawServoDeclarationBlockBorrowed declarations,
  const nsACString* property,
  const nsACString* value,
  bool is_important,
  RawGeckoURLExtraData* data,
  mozilla::ParsingMode parsing_mode,
  nsCompatibility quirks_mode,
  mozilla::css::Loader* loader,
  mozilla::DeclarationBlockMutationClosure);

bool Servo_DeclarationBlock_SetPropertyToAnimationValue(
  RawServoDeclarationBlockBorrowed declarations,
  RawServoAnimationValueBorrowed animation_value);

bool Servo_DeclarationBlock_SetPropertyById(
  RawServoDeclarationBlockBorrowed declarations,
  nsCSSPropertyID property,
  const nsACString* value,
  bool is_important,
  RawGeckoURLExtraData* data,
  mozilla::ParsingMode parsing_mode,
  nsCompatibility quirks_mode,
  mozilla::css::Loader* loader,
  mozilla::DeclarationBlockMutationClosure);

bool Servo_DeclarationBlock_RemoveProperty(
  RawServoDeclarationBlockBorrowed declarations,
  const nsACString* property,
  mozilla::DeclarationBlockMutationClosure);

bool Servo_DeclarationBlock_RemovePropertyById(
  RawServoDeclarationBlockBorrowed declarations,
  nsCSSPropertyID property,
  mozilla::DeclarationBlockMutationClosure);

bool Servo_DeclarationBlock_HasCSSWideKeyword(
  RawServoDeclarationBlockBorrowed declarations,
  nsCSSPropertyID property);

// Compose animation value for a given property.
// |base_values| is nsRefPtrHashtable<nsUint32HashKey, RawServoAnimationValue>.
// We use RawServoAnimationValueTableBorrowed to avoid exposing
// nsRefPtrHashtable in FFI.
void Servo_AnimationCompose(
  RawServoAnimationValueMapBorrowedMut animation_values,
  RawServoAnimationValueTableBorrowed base_values,
  nsCSSPropertyID property,
  RawGeckoAnimationPropertySegmentBorrowed animation_segment,
  RawGeckoAnimationPropertySegmentBorrowed last_segment,
  RawGeckoComputedTimingBorrowed computed_timing,
  mozilla::dom::IterationCompositeOperation iter_composite);

// Calculate the result of interpolating given animation segment at the given
// progress and current iteration.
// This includes combining the segment endpoints with the underlying value
// and/or last value depending the composite modes specified on the
// segment endpoints and the supplied iteration composite mode.
// The caller is responsible for providing an underlying value and
// last value in all situations where there are needed.
RawServoAnimationValueStrong Servo_ComposeAnimationSegment(
  RawGeckoAnimationPropertySegmentBorrowed animation_segment,
  RawServoAnimationValueBorrowedOrNull underlying_value,
  RawServoAnimationValueBorrowedOrNull last_value,
  mozilla::dom::IterationCompositeOperation iter_composite,
  double progress,
  uint64_t current_iteration);

// presentation attributes

bool Servo_DeclarationBlock_PropertyIsSet(
  RawServoDeclarationBlockBorrowed declarations,
  nsCSSPropertyID property);

void Servo_DeclarationBlock_SetIdentStringValue(
  RawServoDeclarationBlockBorrowed declarations,
  nsCSSPropertyID property,
  nsAtom* value);

void Servo_DeclarationBlock_SetKeywordValue(
  RawServoDeclarationBlockBorrowed declarations,
  nsCSSPropertyID property,
  int32_t value);

void Servo_DeclarationBlock_SetIntValue(
  RawServoDeclarationBlockBorrowed declarations,
  nsCSSPropertyID property,
  int32_t value);

void Servo_DeclarationBlock_SetPixelValue(
  RawServoDeclarationBlockBorrowed declarations,
  nsCSSPropertyID property,
  float value);

void Servo_DeclarationBlock_SetLengthValue(
  RawServoDeclarationBlockBorrowed declarations,
  nsCSSPropertyID property,
  float value,
  nsCSSUnit unit);

void Servo_DeclarationBlock_SetNumberValue(
  RawServoDeclarationBlockBorrowed declarations,
  nsCSSPropertyID property,
  float value);

void Servo_DeclarationBlock_SetPercentValue(
  RawServoDeclarationBlockBorrowed declarations,
  nsCSSPropertyID property,
  float value);

void Servo_DeclarationBlock_SetAutoValue(
  RawServoDeclarationBlockBorrowed declarations,
  nsCSSPropertyID property);

void Servo_DeclarationBlock_SetCurrentColor(
  RawServoDeclarationBlockBorrowed declarations,
  nsCSSPropertyID property);

void Servo_DeclarationBlock_SetColorValue(
  RawServoDeclarationBlockBorrowed declarations,
  nsCSSPropertyID property,
  nscolor value);

void Servo_DeclarationBlock_SetFontFamily(
  RawServoDeclarationBlockBorrowed declarations,
  const nsAString& value);

void Servo_DeclarationBlock_SetTextDecorationColorOverride(
  RawServoDeclarationBlockBorrowed declarations);

void Servo_DeclarationBlock_SetBackgroundImage(
  RawServoDeclarationBlockBorrowed declarations,
  const nsAString& value,
  RawGeckoURLExtraData* extra_data);

// MediaList

RawServoMediaListStrong Servo_MediaList_Create();

RawServoMediaListStrong Servo_MediaList_DeepClone(
  RawServoMediaListBorrowed list);

bool Servo_MediaList_Matches(
  RawServoMediaListBorrowed list,
  RawServoStyleSetBorrowed set);

void Servo_MediaList_GetText(RawServoMediaListBorrowed list, nsAString* result);

void Servo_MediaList_SetText(
  RawServoMediaListBorrowed list,
  const nsACString* text,
  mozilla::dom::CallerType aCallerType);

uint32_t Servo_MediaList_GetLength(RawServoMediaListBorrowed list);

bool Servo_MediaList_GetMediumAt(
  RawServoMediaListBorrowed list,
  uint32_t index,
  nsAString* result);

void Servo_MediaList_AppendMedium(
  RawServoMediaListBorrowed list,
  const nsACString* new_medium);

bool Servo_MediaList_DeleteMedium(
  RawServoMediaListBorrowed list,
  const nsACString* old_medium);

size_t Servo_MediaList_SizeOfIncludingThis(
  mozilla::MallocSizeOf malloc_size_of,
  mozilla::MallocSizeOf malloc_enclosing_size_of,
  RawServoMediaListBorrowed list);

// CSS supports();

bool Servo_CSSSupports2(const nsACString* name, const nsACString* value);
bool Servo_CSSSupports(const nsACString* cond);

// Computed style data

ComputedStyleStrong Servo_ComputedValues_GetForAnonymousBox(
  ComputedStyleBorrowedOrNull parent_style_or_null,
  nsAtom* pseudo_tag,
  RawServoStyleSetBorrowed set);

ComputedStyleStrong Servo_ComputedValues_Inherit(
  RawServoStyleSetBorrowed set,
  nsAtom* pseudo_tag,
  ComputedStyleBorrowedOrNull parent_style,
  mozilla::InheritTarget target);

uint8_t Servo_ComputedValues_GetStyleBits(ComputedStyleBorrowed values);

bool Servo_ComputedValues_EqualCustomProperties(
  ServoComputedDataBorrowed first,
  ServoComputedDataBorrowed second);

// Gets the source style rules for the computed values. This returns
// the result via rules, which would include a list of unowned pointers
// to RawServoStyleRule.
void Servo_ComputedValues_GetStyleRuleList(
  ComputedStyleBorrowed values,
  RawGeckoServoStyleRuleListBorrowedMut rules);

// Initialize Servo components. Should be called exactly once at startup.
void Servo_Initialize(RawGeckoURLExtraData* dummy_url_data);

// Initialize Servo on a cooperative Quantum DOM thread.
void Servo_InitializeCooperativeThread();

// Shut down Servo components. Should be called exactly once at shutdown.
void Servo_Shutdown();

// Restyle and change hints.
void Servo_NoteExplicitHints(
  RawGeckoElementBorrowed element,
  nsRestyleHint restyle_hint,
  nsChangeHint change_hint);

// We'd like to return `nsChangeHint` here, but bindgen bitfield enums don't
// work as return values with the Linux 32-bit ABI at the moment because
// they wrap the value in a struct.
uint32_t Servo_TakeChangeHint(
  RawGeckoElementBorrowed element,
  bool* was_restyled);

ComputedStyleStrong Servo_ResolveStyle(
  RawGeckoElementBorrowed element,
  RawServoStyleSetBorrowed set);

ComputedStyleStrong Servo_ResolvePseudoStyle(
  RawGeckoElementBorrowed element,
  mozilla::CSSPseudoElementType pseudo_type,
  bool is_probe,
  ComputedStyleBorrowedOrNull inherited_style,
  RawServoStyleSetBorrowed set);

ComputedStyleStrong Servo_ComputedValues_ResolveXULTreePseudoStyle(
  RawGeckoElementBorrowed element,
  nsAtom* pseudo_tag,
  ComputedStyleBorrowed inherited_style,
  const mozilla::AtomArray* input_word,
  RawServoStyleSetBorrowed set);

void Servo_SetExplicitStyle(
  RawGeckoElementBorrowed element,
  ComputedStyleBorrowed primary_style);

bool Servo_HasAuthorSpecifiedRules(
  ComputedStyleBorrowed style,
  RawGeckoElementBorrowed element,
  mozilla::CSSPseudoElementType pseudo_type,
  uint32_t rule_type_mask,
  bool author_colors_allowed);

// Resolves style for an element or pseudo-element without processing pending
// restyles first. The Element and its ancestors may be unstyled, have pending
// restyles, or be in a display:none subtree. Styles are cached when possible,
// though caching is not possible within display:none subtrees, and the styles
// may be invalidated by already-scheduled restyles.
//
// The tree must be in a consistent state such that a normal traversal could be
// performed, and this function maintains that invariant.

ComputedStyleStrong Servo_ResolveStyleLazily(
  RawGeckoElementBorrowed element,
  mozilla::CSSPseudoElementType pseudo_type,
  mozilla::StyleRuleInclusion rule_inclusion,
  const mozilla::ServoElementSnapshotTable* snapshots,
  RawServoStyleSetBorrowed set);

// Reparents style to the new parents.
ComputedStyleStrong Servo_ReparentStyle(
  ComputedStyleBorrowed style_to_reparent,
  ComputedStyleBorrowed parent_style,
  ComputedStyleBorrowed parent_style_ignoring_first_line,
  ComputedStyleBorrowed layout_parent_style,
  // element is null if there is no content node involved, or if it's not an
  // element.
  RawGeckoElementBorrowedOrNull element,
  RawServoStyleSetBorrowed set);

// Use ServoStyleSet::PrepareAndTraverseSubtree instead of calling this
// directly
bool Servo_TraverseSubtree(
  RawGeckoElementBorrowed root,
  RawServoStyleSetBorrowed set,
  const mozilla::ServoElementSnapshotTable* snapshots,
  mozilla::ServoTraversalFlags flags);

// Assert that the tree has no pending or unconsumed restyles.
void Servo_AssertTreeIsClean(RawGeckoElementBorrowed root);

// Returns true if the current thread is a Servo parallel worker thread.
bool Servo_IsWorkerThread();

// Checks whether the rule tree has crossed its threshold for unused rule nodes,
// and if so, frees them.
void Servo_MaybeGCRuleTree(RawServoStyleSetBorrowed set);

// Returns computed values for the given element without any animations rules.
ComputedStyleStrong Servo_StyleSet_GetBaseComputedValuesForElement(
  RawServoStyleSetBorrowed set,
  RawGeckoElementBorrowed element,
  ComputedStyleBorrowed existing_style,
  const mozilla::ServoElementSnapshotTable* snapshots);

// Returns computed values for the given element by adding an animation value.
ComputedStyleStrong Servo_StyleSet_GetComputedValuesByAddingAnimation(
  RawServoStyleSetBorrowed set,
  RawGeckoElementBorrowed element,
  ComputedStyleBorrowed existing_style,
  const mozilla::ServoElementSnapshotTable* snapshots,
  RawServoAnimationValueBorrowed animation);

// For canvas font.
void Servo_SerializeFontValueForCanvas(
  RawServoDeclarationBlockBorrowed declarations,
  nsAString* buffer);

// GetComputedStyle APIs.
bool Servo_GetCustomPropertyValue(
  ComputedStyleBorrowed computed_values,
  const nsAString* name,
  nsAString* value);

uint32_t Servo_GetCustomPropertiesCount(ComputedStyleBorrowed computed_values);

bool Servo_GetCustomPropertyNameAt(
  ComputedStyleBorrowed,
  uint32_t index,
  nsAString* name);

void Servo_GetPropertyValue(
  ComputedStyleBorrowed computed_values,
  nsCSSPropertyID property,
  nsAString* value);

void Servo_ProcessInvalidations(
  RawServoStyleSetBorrowed set,
  RawGeckoElementBorrowed element,
  const mozilla::ServoElementSnapshotTable* snapshots);

bool Servo_HasPendingRestyleAncestor(RawGeckoElementBorrowed element);

void Servo_CssUrlData_GetSerialization(
  RawServoCssUrlDataBorrowed url,
  uint8_t const** chars,
  uint32_t* len);

RawGeckoURLExtraDataBorrowedMut Servo_CssUrlData_GetExtraData(
  RawServoCssUrlDataBorrowed url);

bool Servo_CssUrlData_IsLocalRef(RawServoCssUrlDataBorrowed url);

// CSS parsing utility functions.

bool Servo_IsValidCSSColor(const nsAString* value);

bool Servo_ComputeColor(
  RawServoStyleSetBorrowedOrNull set,
  nscolor current_color,
  const nsAString* value,
  nscolor* result_color,
  bool* was_current_color,
  mozilla::css::Loader* loader);

bool Servo_IntersectionObserverRootMargin_Parse(
  const nsAString* value,
  nsStyleSides* result);

void Servo_IntersectionObserverRootMargin_ToString(
  const nsStyleSides* rect,
  nsAString* result);

// Returning false means the parsed transform contains relative lengths or
// percentage value, so we cannot compute the matrix. In this case, we keep
// |result| and |contains_3d_transform| as-is.
bool Servo_ParseTransformIntoMatrix(
  const nsAString* value,
  bool* contains_3d_transform,
  RawGeckoGfxMatrix4x4* result);

bool Servo_ParseFontShorthandForMatching(
  const nsAString* value,
  RawGeckoURLExtraData* data,
  RefPtr<mozilla::SharedFontList>* family,
  // We use ComputedFontStyleDescriptor just for convenience,
  // but the two values of Oblique are the same.
  mozilla::StyleComputedFontStyleDescriptor* style,
  float* stretch,
  float* weight);

nsCSSPropertyID Servo_ResolveLogicalProperty(
  nsCSSPropertyID,
  ComputedStyleBorrowed);

nsCSSPropertyID Servo_Property_LookupEnabledForAllContent(
  const nsACString* name);

const uint8_t* Servo_Property_GetName(nsCSSPropertyID, uint32_t* out_length);
bool Servo_Property_IsShorthand(const nsACString* name, bool* found);
bool Servo_Property_IsInherited(const nsACString* name);

bool Servo_Property_SupportsType(
  const nsACString* name,
  uint32_t ty,
  bool* found);

void Servo_Property_GetCSSValuesForProperty(
  const nsACString* name,
  bool* found,
  nsTArray<nsString>* result);

uint64_t Servo_PseudoClass_GetStates(const nsACString* name);

StyleUseCounters* Servo_UseCounters_Create();
void Servo_UseCounters_Drop(StyleUseCountersOwned);

void Servo_UseCounters_Merge(
  StyleUseCountersBorrowed doc_counters,
  StyleUseCountersBorrowed sheet_counters);

bool Servo_IsCssPropertyRecordedInUseCounter(
  StyleUseCountersBorrowed,
  const nsACString* property,
  bool* out_known_prop);

RawServoQuotesStrong Servo_Quotes_GetInitialValue();
bool Servo_Quotes_Equal(RawServoQuotesBorrowed a, RawServoQuotesBorrowed b);

void Servo_Quotes_GetQuote(
    RawServoQuotesBorrowed quotes,
    int32_t depth,
    mozilla::StyleContentType quote_type,
    nsAString* result);

// AddRef / Release functions
#define SERVO_ARC_TYPE(name_, type_)              \
  void Servo_##name_##_AddRef(type_##Borrowed);   \
  void Servo_##name_##_Release(type_##Borrowed);
#include "mozilla/ServoArcTypeList.h"
#undef SERVO_ARC_TYPE

} // extern "C"

#endif // mozilla_ServoBindings_h