mozilla
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gecko-dev
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gecko-dev/layout/style/ServoBindings.cpp

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/* -*- 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/. */
#include "mozilla/ServoBindings.h"
#include "StyleStructContext.h"
#include "gfxFontFamilyList.h"
#include "nsAttrValueInlines.h"
#include "nsCSSRuleProcessor.h"
#include "nsContentUtils.h"
#include "nsDOMTokenList.h"
#include "nsIDOMNode.h"
#include "nsIDocument.h"
#include "nsINode.h"
#include "nsIPrincipal.h"
#include "nsNameSpaceManager.h"
#include "nsString.h"
#include "nsStyleStruct.h"
#include "nsStyleUtil.h"
#include "nsTArray.h"
#include "mozilla/EventStates.h"
#include "mozilla/ServoElementSnapshot.h"
#include "mozilla/dom/Element.h"
#define IMPL_STRONG_REF_TYPE(name, T) \
already_AddRefed<T> name::Consume() { \
RefPtr<T> result = dont_AddRef(mPtr); \
mPtr = nullptr; \
return result.forget(); \
};
IMPL_STRONG_REF_TYPE(ServoComputedValuesStrong, ServoComputedValues);
IMPL_STRONG_REF_TYPE(RawServoStyleSheetStrong, RawServoStyleSheet);
uint32_t
Gecko_ChildrenCount(RawGeckoNode* aNode)
{
return aNode->GetChildCount();
}
bool
Gecko_NodeIsElement(RawGeckoNode* aNode)
{
return aNode->IsElement();
}
RawGeckoNode*
Gecko_GetParentNode(RawGeckoNode* aNode)
{
return aNode->GetParentNode();
}
RawGeckoNode*
Gecko_GetFirstChild(RawGeckoNode* aNode)
{
return aNode->GetFirstChild();
}
RawGeckoNode*
Gecko_GetLastChild(RawGeckoNode* aNode)
{
return aNode->GetLastChild();
}
RawGeckoNode*
Gecko_GetPrevSibling(RawGeckoNode* aNode)
{
return aNode->GetPreviousSibling();
}
RawGeckoNode*
Gecko_GetNextSibling(RawGeckoNode* aNode)
{
return aNode->GetNextSibling();
}
RawGeckoElement*
Gecko_GetParentElement(RawGeckoElement* aElement)
{
return aElement->GetParentElement();
}
RawGeckoElement*
Gecko_GetFirstChildElement(RawGeckoElement* aElement)
{
return aElement->GetFirstElementChild();
}
RawGeckoElement* Gecko_GetLastChildElement(RawGeckoElement* aElement)
{
return aElement->GetLastElementChild();
}
RawGeckoElement*
Gecko_GetPrevSiblingElement(RawGeckoElement* aElement)
{
return aElement->GetPreviousElementSibling();
}
RawGeckoElement*
Gecko_GetNextSiblingElement(RawGeckoElement* aElement)
{
return aElement->GetNextElementSibling();
}
RawGeckoElement*
Gecko_GetDocumentElement(RawGeckoDocument* aDoc)
{
return aDoc->GetDocumentElement();
}
EventStates::ServoType
Gecko_ElementState(RawGeckoElement* aElement)
{
return aElement->StyleState().ServoValue();
}
bool
Gecko_IsHTMLElementInHTMLDocument(RawGeckoElement* aElement)
{
return aElement->IsHTMLElement() && aElement->OwnerDoc()->IsHTMLDocument();
}
bool
Gecko_IsLink(RawGeckoElement* aElement)
{
return nsCSSRuleProcessor::IsLink(aElement);
}
bool
Gecko_IsTextNode(RawGeckoNode* aNode)
{
return aNode->NodeInfo()->NodeType() == nsIDOMNode::TEXT_NODE;
}
bool
Gecko_IsVisitedLink(RawGeckoElement* aElement)
{
return aElement->StyleState().HasState(NS_EVENT_STATE_VISITED);
}
bool
Gecko_IsUnvisitedLink(RawGeckoElement* aElement)
{
return aElement->StyleState().HasState(NS_EVENT_STATE_UNVISITED);
}
bool
Gecko_IsRootElement(RawGeckoElement* aElement)
{
return aElement->OwnerDoc()->GetRootElement() == aElement;
}
nsIAtom*
Gecko_LocalName(RawGeckoElement* aElement)
{
return aElement->NodeInfo()->NameAtom();
}
nsIAtom*
Gecko_Namespace(RawGeckoElement* aElement)
{
int32_t id = aElement->NodeInfo()->NamespaceID();
return nsContentUtils::NameSpaceManager()->NameSpaceURIAtomForServo(id);
}
nsIAtom*
Gecko_GetElementId(RawGeckoElement* aElement)
{
const nsAttrValue* attr = aElement->GetParsedAttr(nsGkAtoms::id);
return attr ? attr->GetAtomValue() : nullptr;
}
// Dirtiness tracking.
uint32_t
Gecko_GetNodeFlags(RawGeckoNode* aNode)
{
return aNode->GetFlags();
}
void
Gecko_SetNodeFlags(RawGeckoNode* aNode, uint32_t aFlags)
{
aNode->SetFlags(aFlags);
}
void
Gecko_UnsetNodeFlags(RawGeckoNode* aNode, uint32_t aFlags)
{
aNode->UnsetFlags(aFlags);
}
nsStyleContext*
Gecko_GetStyleContext(RawGeckoNode* aNode)
{
MOZ_ASSERT(aNode->IsContent());
nsIFrame* primaryFrame = aNode->AsContent()->GetPrimaryFrame();
if (!primaryFrame) {
return nullptr;
}
return primaryFrame->StyleContext();
}
nsChangeHint
Gecko_CalcStyleDifference(nsStyleContext* aOldStyleContext,
ServoComputedValuesBorrowed aComputedValues)
{
MOZ_ASSERT(aOldStyleContext);
MOZ_ASSERT(aComputedValues);
// Pass the safe thing, which causes us to miss a potential optimization. See
// bug 1289863.
nsChangeHint forDescendants = nsChangeHint_Hints_NotHandledForDescendants;
// Eventually, we should compute things out of these flags like
// ElementRestyler::RestyleSelf does and pass the result to the caller to
// potentially halt traversal. See bug 1289868.
uint32_t equalStructs, samePointerStructs;
nsChangeHint result =
aOldStyleContext->CalcStyleDifference(aComputedValues,
forDescendants,
&equalStructs,
&samePointerStructs);
return result;
}
void
Gecko_StoreStyleDifference(RawGeckoNode* aNode, nsChangeHint aChangeHintToStore)
{
#ifdef MOZ_STYLO
MOZ_ASSERT(aNode->IsContent());
MOZ_ASSERT(aNode->IsDirtyForServo(),
"Change hint stored in a not-dirty node");
// For elements, we need to store the change hint in the proper style context.
// For text nodes, we want to store the change hint in the parent element,
// since Gecko's change list only operates on Elements, and we'll fail to
// compute the change hint for the element properly because the property won't
// always be in the cache of the parent's nsStyleContext.
//
// For Gecko this is not a problem, because they access the inherited structs
// from the parent style context in order to inherit them, so they're found in
// the cache and get compared.
Element* aElement =
aNode->IsElement() ? aNode->AsElement() : aNode->GetParentElement();
nsIFrame* primaryFrame = aElement->GetPrimaryFrame();
if (!primaryFrame) {
// TODO: Pick the undisplayed content map from the frame-constructor, and
// stick it there. For now we're generating ReconstructFrame
// unconditionally, which is suboptimal.
return;
}
primaryFrame->StyleContext()->StoreChangeHint(aChangeHintToStore);
#else
MOZ_CRASH("stylo: Shouldn't call Gecko_StoreStyleDifference in "
"non-stylo build");
#endif
}
ServoDeclarationBlock*
Gecko_GetServoDeclarationBlock(RawGeckoElement* aElement)
{
const nsAttrValue* attr = aElement->GetParsedAttr(nsGkAtoms::style);
if (!attr || attr->Type() != nsAttrValue::eServoCSSDeclaration) {
return nullptr;
}
return attr->GetServoCSSDeclarationValue();
}
template <typename Implementor>
static nsIAtom*
AtomAttrValue(Implementor* aElement, nsIAtom* aName)
{
const nsAttrValue* attr = aElement->GetParsedAttr(aName);
return attr ? attr->GetAtomValue() : nullptr;
}
template <typename Implementor, typename MatchFn>
static bool
DoMatch(Implementor* aElement, nsIAtom* aNS, nsIAtom* aName, MatchFn aMatch)
{
if (aNS) {
int32_t ns = nsContentUtils::NameSpaceManager()->GetNameSpaceID(aNS,
aElement->IsInChromeDocument());
NS_ENSURE_TRUE(ns != kNameSpaceID_Unknown, false);
const nsAttrValue* value = aElement->GetParsedAttr(aName, ns);
return value && aMatch(value);
}
// No namespace means any namespace - we have to check them all. :-(
BorrowedAttrInfo attrInfo;
for (uint32_t i = 0; (attrInfo = aElement->GetAttrInfoAt(i)); ++i) {
if (attrInfo.mName->LocalName() != aName) {
continue;
}
if (aMatch(attrInfo.mValue)) {
return true;
}
}
return false;
}
template <typename Implementor>
static bool
HasAttr(Implementor* aElement, nsIAtom* aNS, nsIAtom* aName)
{
auto match = [](const nsAttrValue* aValue) { return true; };
return DoMatch(aElement, aNS, aName, match);
}
template <typename Implementor>
static bool
AttrEquals(Implementor* aElement, nsIAtom* aNS, nsIAtom* aName, nsIAtom* aStr,
bool aIgnoreCase)
{
auto match = [aStr, aIgnoreCase](const nsAttrValue* aValue) {
return aValue->Equals(aStr, aIgnoreCase ? eIgnoreCase : eCaseMatters);
};
return DoMatch(aElement, aNS, aName, match);
}
template <typename Implementor>
static bool
AttrDashEquals(Implementor* aElement, nsIAtom* aNS, nsIAtom* aName,
nsIAtom* aStr)
{
auto match = [aStr](const nsAttrValue* aValue) {
nsAutoString str;
aValue->ToString(str);
const nsDefaultStringComparator c;
return nsStyleUtil::DashMatchCompare(str, nsDependentAtomString(aStr), c);
};
return DoMatch(aElement, aNS, aName, match);
}
template <typename Implementor>
static bool
AttrIncludes(Implementor* aElement, nsIAtom* aNS, nsIAtom* aName,
nsIAtom* aStr)
{
auto match = [aStr](const nsAttrValue* aValue) {
nsAutoString str;
aValue->ToString(str);
const nsDefaultStringComparator c;
return nsStyleUtil::ValueIncludes(str, nsDependentAtomString(aStr), c);
};
return DoMatch(aElement, aNS, aName, match);
}
template <typename Implementor>
static bool
AttrHasSubstring(Implementor* aElement, nsIAtom* aNS, nsIAtom* aName,
nsIAtom* aStr)
{
auto match = [aStr](const nsAttrValue* aValue) {
nsAutoString str;
aValue->ToString(str);
return FindInReadable(str, nsDependentAtomString(aStr));
};
return DoMatch(aElement, aNS, aName, match);
}
template <typename Implementor>
static bool
AttrHasPrefix(Implementor* aElement, nsIAtom* aNS, nsIAtom* aName,
nsIAtom* aStr)
{
auto match = [aStr](const nsAttrValue* aValue) {
nsAutoString str;
aValue->ToString(str);
return StringBeginsWith(str, nsDependentAtomString(aStr));
};
return DoMatch(aElement, aNS, aName, match);
}
template <typename Implementor>
static bool
AttrHasSuffix(Implementor* aElement, nsIAtom* aNS, nsIAtom* aName,
nsIAtom* aStr)
{
auto match = [aStr](const nsAttrValue* aValue) {
nsAutoString str;
aValue->ToString(str);
return StringEndsWith(str, nsDependentAtomString(aStr));
};
return DoMatch(aElement, aNS, aName, match);
}
/**
* Gets the class or class list (if any) of the implementor. The calling
* convention here is rather hairy, and is optimized for getting Servo the
* information it needs for hot calls.
*
* The return value indicates the number of classes. If zero, neither outparam
* is valid. If one, the class_ outparam is filled with the atom of the class.
* If two or more, the classList outparam is set to point to an array of atoms
* representing the class list.
*
* The array is borrowed and the atoms are not addrefed. These values can be
* invalidated by any DOM mutation. Use them in a tight scope.
*/
template <typename Implementor>
static uint32_t
ClassOrClassList(Implementor* aElement, nsIAtom** aClass, nsIAtom*** aClassList)
{
const nsAttrValue* attr = aElement->GetParsedAttr(nsGkAtoms::_class);
if (!attr) {
return 0;
}
// For class values with only whitespace, Gecko just stores a string. For the
// purposes of the style system, there is no class in this case.
if (attr->Type() == nsAttrValue::eString) {
MOZ_ASSERT(nsContentUtils::TrimWhitespace<nsContentUtils::IsHTMLWhitespace>(
attr->GetStringValue()).IsEmpty());
return 0;
}
// Single tokens are generally stored as an atom. Check that case.
if (attr->Type() == nsAttrValue::eAtom) {
*aClass = attr->GetAtomValue();
return 1;
}
// At this point we should have an atom array. It is likely, but not
// guaranteed, that we have two or more elements in the array.
MOZ_ASSERT(attr->Type() == nsAttrValue::eAtomArray);
nsTArray<nsCOMPtr<nsIAtom>>* atomArray = attr->GetAtomArrayValue();
uint32_t length = atomArray->Length();
// Special case: zero elements.
if (length == 0) {
return 0;
}
// Special case: one element.
if (length == 1) {
*aClass = atomArray->ElementAt(0);
return 1;
}
// General case: Two or more elements.
//
// Note: We could also expose this array as an array of nsCOMPtrs, since
// bindgen knows what those look like, and eliminate the reinterpret_cast.
// But it's not obvious that that would be preferable.
static_assert(sizeof(nsCOMPtr<nsIAtom>) == sizeof(nsIAtom*), "Bad simplification");
static_assert(alignof(nsCOMPtr<nsIAtom>) == alignof(nsIAtom*), "Bad simplification");
nsCOMPtr<nsIAtom>* elements = atomArray->Elements();
nsIAtom** rawElements = reinterpret_cast<nsIAtom**>(elements);
*aClassList = rawElements;
return atomArray->Length();
}
#define SERVO_IMPL_ELEMENT_ATTR_MATCHING_FUNCTIONS(prefix_, implementor_) \
nsIAtom* prefix_##AtomAttrValue(implementor_* aElement, nsIAtom* aName) \
{ \
return AtomAttrValue(aElement, aName); \
} \
bool prefix_##HasAttr(implementor_* aElement, nsIAtom* aNS, nsIAtom* aName) \
{ \
return HasAttr(aElement, aNS, aName); \
} \
bool prefix_##AttrEquals(implementor_* aElement, nsIAtom* aNS, \
nsIAtom* aName, nsIAtom* aStr, bool aIgnoreCase) \
{ \
return AttrEquals(aElement, aNS, aName, aStr, aIgnoreCase); \
} \
bool prefix_##AttrDashEquals(implementor_* aElement, nsIAtom* aNS, \
nsIAtom* aName, nsIAtom* aStr) \
{ \
return AttrDashEquals(aElement, aNS, aName, aStr); \
} \
bool prefix_##AttrIncludes(implementor_* aElement, nsIAtom* aNS, \
nsIAtom* aName, nsIAtom* aStr) \
{ \
return AttrIncludes(aElement, aNS, aName, aStr); \
} \
bool prefix_##AttrHasSubstring(implementor_* aElement, nsIAtom* aNS, \
nsIAtom* aName, nsIAtom* aStr) \
{ \
return AttrHasSubstring(aElement, aNS, aName, aStr); \
} \
bool prefix_##AttrHasPrefix(implementor_* aElement, nsIAtom* aNS, \
nsIAtom* aName, nsIAtom* aStr) \
{ \
return AttrHasPrefix(aElement, aNS, aName, aStr); \
} \
bool prefix_##AttrHasSuffix(implementor_* aElement, nsIAtom* aNS, \
nsIAtom* aName, nsIAtom* aStr) \
{ \
return AttrHasSuffix(aElement, aNS, aName, aStr); \
} \
uint32_t prefix_##ClassOrClassList(implementor_* aElement, nsIAtom** aClass, \
nsIAtom*** aClassList) \
{ \
return ClassOrClassList(aElement, aClass, aClassList); \
}
SERVO_IMPL_ELEMENT_ATTR_MATCHING_FUNCTIONS(Gecko_, RawGeckoElement)
SERVO_IMPL_ELEMENT_ATTR_MATCHING_FUNCTIONS(Gecko_Snapshot, ServoElementSnapshot)
#undef SERVO_IMPL_ELEMENT_ATTR_MATCHING_FUNCTIONS
ServoNodeData*
Gecko_GetNodeData(RawGeckoNode* aNode)
{
return aNode->ServoData().get();
}
void
Gecko_SetNodeData(RawGeckoNode* aNode, ServoNodeData* aData)
{
MOZ_ASSERT(!aNode->ServoData());
aNode->ServoData().reset(aData);
}
nsIAtom*
Gecko_Atomize(const char* aString, uint32_t aLength)
{
return NS_Atomize(nsDependentCSubstring(aString, aLength)).take();
}
void
Gecko_AddRefAtom(nsIAtom* aAtom)
{
NS_ADDREF(aAtom);
}
void
Gecko_ReleaseAtom(nsIAtom* aAtom)
{
NS_RELEASE(aAtom);
}
const uint16_t*
Gecko_GetAtomAsUTF16(nsIAtom* aAtom, uint32_t* aLength)
{
static_assert(sizeof(char16_t) == sizeof(uint16_t), "Servo doesn't know what a char16_t is");
MOZ_ASSERT(aAtom);
*aLength = aAtom->GetLength();
// We need to manually cast from char16ptr_t to const char16_t* to handle the
// MOZ_USE_CHAR16_WRAPPER we use on WIndows.
return reinterpret_cast<const uint16_t*>(static_cast<const char16_t*>(aAtom->GetUTF16String()));
}
bool
Gecko_AtomEqualsUTF8(nsIAtom* aAtom, const char* aString, uint32_t aLength)
{
// XXXbholley: We should be able to do this without converting, I just can't
// find the right thing to call.
nsAutoString atomStr;
aAtom->ToString(atomStr);
NS_ConvertUTF8toUTF16 inStr(nsDependentCSubstring(aString, aLength));
return atomStr.Equals(inStr);
}
bool
Gecko_AtomEqualsUTF8IgnoreCase(nsIAtom* aAtom, const char* aString, uint32_t aLength)
{
// XXXbholley: We should be able to do this without converting, I just can't
// find the right thing to call.
nsAutoString atomStr;
aAtom->ToString(atomStr);
NS_ConvertUTF8toUTF16 inStr(nsDependentCSubstring(aString, aLength));
return nsContentUtils::EqualsIgnoreASCIICase(atomStr, inStr);
}
void
Gecko_FontFamilyList_Clear(FontFamilyList* aList) {
aList->Clear();
}
void
Gecko_FontFamilyList_AppendNamed(FontFamilyList* aList, nsIAtom* aName)
{
// Servo doesn't record whether the name was quoted or unquoted, so just
// assume unquoted for now.
FontFamilyName family;
aName->ToString(family.mName);
aList->Append(family);
}
void
Gecko_FontFamilyList_AppendGeneric(FontFamilyList* aList, FontFamilyType aType)
{
aList->Append(FontFamilyName(aType));
}
void
Gecko_CopyFontFamilyFrom(nsFont* dst, const nsFont* src)
{
dst->fontlist = src->fontlist;
}
void
Gecko_SetListStyleType(nsStyleList* style_struct, uint32_t type)
{
// Builtin counter styles are static and use no-op refcounting, and thus are
// safe to use off-main-thread.
style_struct->SetCounterStyle(CounterStyleManager::GetBuiltinStyle(type));
}
void
Gecko_CopyListStyleTypeFrom(nsStyleList* dst, const nsStyleList* src)
{
dst->SetCounterStyle(src->GetCounterStyle());
}
NS_IMPL_HOLDER_FFI_REFCOUNTING(nsIPrincipal, Principal)
NS_IMPL_HOLDER_FFI_REFCOUNTING(nsIURI, URI)
void
Gecko_SetMozBinding(nsStyleDisplay* aDisplay,
const uint8_t* aURLString, uint32_t aURLStringLength,
ThreadSafeURIHolder* aBaseURI,
ThreadSafeURIHolder* aReferrer,
ThreadSafePrincipalHolder* aPrincipal)
{
MOZ_ASSERT(aDisplay);
MOZ_ASSERT(aURLString);
MOZ_ASSERT(aBaseURI);
MOZ_ASSERT(aReferrer);
MOZ_ASSERT(aPrincipal);
nsString url;
nsDependentCSubstring urlString(reinterpret_cast<const char*>(aURLString),
aURLStringLength);
AppendUTF8toUTF16(urlString, url);
RefPtr<nsStringBuffer> urlBuffer = nsCSSValue::BufferFromString(url);
aDisplay->mBinding =
new css::URLValue(urlBuffer, do_AddRef(aBaseURI),
do_AddRef(aReferrer), do_AddRef(aPrincipal));
}
void
Gecko_CopyMozBindingFrom(nsStyleDisplay* aDest, const nsStyleDisplay* aSrc)
{
aDest->mBinding = aSrc->mBinding;
}
void
Gecko_SetNullImageValue(nsStyleImage* aImage)
{
MOZ_ASSERT(aImage);
aImage->SetNull();
}
void
Gecko_SetGradientImageValue(nsStyleImage* aImage, nsStyleGradient* aGradient)
{
MOZ_ASSERT(aImage);
aImage->SetGradientData(aGradient);
}
void
Gecko_CopyImageValueFrom(nsStyleImage* aImage, const nsStyleImage* aOther)
{
MOZ_ASSERT(aImage);
MOZ_ASSERT(aOther);
*aImage = *aOther;
}
nsStyleGradient*
Gecko_CreateGradient(uint8_t aShape,
uint8_t aSize,
bool aRepeating,
bool aLegacySyntax,
uint32_t aStopCount)
{
nsStyleGradient* result = new nsStyleGradient();
result->mShape = aShape;
result->mSize = aSize;
result->mRepeating = aRepeating;
result->mLegacySyntax = aLegacySyntax;
result->mAngle.SetNoneValue();
result->mBgPosX.SetNoneValue();
result->mBgPosY.SetNoneValue();
result->mRadiusX.SetNoneValue();
result->mRadiusY.SetNoneValue();
nsStyleGradientStop dummyStop;
dummyStop.mLocation.SetNoneValue();
dummyStop.mColor = NS_RGB(0, 0, 0);
dummyStop.mIsInterpolationHint = 0;
for (uint32_t i = 0; i < aStopCount; i++) {
result->mStops.AppendElement(dummyStop);
}
return result;
}
void
Gecko_EnsureTArrayCapacity(void* aArray, size_t aCapacity, size_t aElemSize)
{
auto base = reinterpret_cast<nsTArray_base<nsTArrayInfallibleAllocator, nsTArray_CopyWithMemutils> *>(aArray);
base->EnsureCapacity<nsTArrayInfallibleAllocator>(aCapacity, aElemSize);
}
void
Gecko_EnsureImageLayersLength(nsStyleImageLayers* aLayers, size_t aLen)
{
aLayers->mLayers.EnsureLengthAtLeast(aLen);
}
void
Gecko_InitializeImageLayer(nsStyleImageLayers::Layer* aLayer,
nsStyleImageLayers::LayerType aLayerType)
{
aLayer->Initialize(aLayerType);
}
void
Gecko_ResetStyleCoord(nsStyleUnit* aUnit, nsStyleUnion* aValue)
{
nsStyleCoord::Reset(*aUnit, *aValue);
}
void
Gecko_SetStyleCoordCalcValue(nsStyleUnit* aUnit, nsStyleUnion* aValue, nsStyleCoord::CalcValue aCalc)
{
// Calc units should be cleaned up first
MOZ_ASSERT(*aUnit != nsStyleUnit::eStyleUnit_Calc);
nsStyleCoord::Calc* calcRef = new nsStyleCoord::Calc();
calcRef->mLength = aCalc.mLength;
calcRef->mPercent = aCalc.mPercent;
calcRef->mHasPercent = aCalc.mHasPercent;
*aUnit = nsStyleUnit::eStyleUnit_Calc;
aValue->mPointer = calcRef;
calcRef->AddRef();
}
NS_IMPL_THREADSAFE_FFI_REFCOUNTING(nsStyleCoord::Calc, Calc);
#define STYLE_STRUCT(name, checkdata_cb) \
\
void \
Gecko_Construct_nsStyle##name(nsStyle##name* ptr) \
{ \
new (ptr) nsStyle##name(StyleStructContext::ServoContext()); \
} \
\
void \
Gecko_CopyConstruct_nsStyle##name(nsStyle##name* ptr, \
const nsStyle##name* other) \
{ \
new (ptr) nsStyle##name(*other); \
} \
\
void \
Gecko_Destroy_nsStyle##name(nsStyle##name* ptr) \
{ \
ptr->~nsStyle##name(); \
}
#include "nsStyleStructList.h"
#undef STYLE_STRUCT
#ifndef MOZ_STYLO
void
Servo_DropNodeData(ServoNodeData* data)
{
MOZ_CRASH("stylo: shouldn't be calling Servo_DropNodeData in a "
"non-MOZ_STYLO build");
}
RawServoStyleSheetStrong
Servo_StylesheetFromUTF8Bytes(const uint8_t* bytes, uint32_t length,
mozilla::css::SheetParsingMode mode,
const uint8_t* base_bytes, uint32_t base_length,
ThreadSafeURIHolder* base,
ThreadSafeURIHolder* referrer,
ThreadSafePrincipalHolder* principal)
{
MOZ_CRASH("stylo: shouldn't be calling Servo_StylesheetFromUTF8Bytes in a "
"non-MOZ_STYLO build");
}
void
Servo_AddRefStyleSheet(RawServoStyleSheetBorrowed sheet)
{
MOZ_CRASH("stylo: shouldn't be calling Servo_AddRefStylesheet in a "
"non-MOZ_STYLO build");
}
void
Servo_ReleaseStyleSheet(RawServoStyleSheetBorrowed sheet)
{
MOZ_CRASH("stylo: shouldn't be calling Servo_ReleaseStylesheet in a "
"non-MOZ_STYLO build");
}
void
Servo_AppendStyleSheet(RawServoStyleSheetBorrowed sheet, RawServoStyleSet* set)
{
MOZ_CRASH("stylo: shouldn't be calling Servo_AppendStyleSheet in a "
"non-MOZ_STYLO build");
}
void Servo_PrependStyleSheet(RawServoStyleSheetBorrowed sheet, RawServoStyleSet* set)
{
MOZ_CRASH("stylo: shouldn't be calling Servo_PrependStyleSheet in a "
"non-MOZ_STYLO build");
}
void Servo_RemoveStyleSheet(RawServoStyleSheetBorrowed sheet, RawServoStyleSet* set)
{
MOZ_CRASH("stylo: shouldn't be calling Servo_RemoveStyleSheet in a "
"non-MOZ_STYLO build");
}
void
Servo_InsertStyleSheetBefore(RawServoStyleSheetBorrowed sheet,
RawServoStyleSheetBorrowed reference,
RawServoStyleSet* set)
{
MOZ_CRASH("stylo: shouldn't be calling Servo_InsertStyleSheetBefore in a "
"non-MOZ_STYLO build");
}
bool
Servo_StyleSheetHasRules(RawServoStyleSheetBorrowed sheet)
{
MOZ_CRASH("stylo: shouldn't be calling Servo_StyleSheetHasRules in a "
"non-MOZ_STYLO build");
}
RawServoStyleSet*
Servo_InitStyleSet()
{
MOZ_CRASH("stylo: shouldn't be calling Servo_InitStyleSet in a "
"non-MOZ_STYLO build");
}
void
Servo_DropStyleSet(RawServoStyleSet* set)
{
MOZ_CRASH("stylo: shouldn't be calling Servo_DropStyleSet in a "
"non-MOZ_STYLO build");
}
ServoDeclarationBlock*
Servo_ParseStyleAttribute(const uint8_t* bytes, uint32_t length,
nsHTMLCSSStyleSheet* cache)
{
MOZ_CRASH("stylo: shouldn't be calling Servo_ParseStyleAttribute in a "
"non-MOZ_STYLO build");
}
void
Servo_DropDeclarationBlock(ServoDeclarationBlock* declarations)
{
MOZ_CRASH("stylo: shouldn't be calling Servo_DropDeclarationBlock in a "
"non-MOZ_STYLO build");
}
nsHTMLCSSStyleSheet*
Servo_GetDeclarationBlockCache(ServoDeclarationBlock* declarations)
{
MOZ_CRASH("stylo: shouldn't be calling Servo_GetDeclarationBlockCache in a "
"non-MOZ_STYLO build");
}
void
Servo_SetDeclarationBlockImmutable(ServoDeclarationBlock* declarations)
{
MOZ_CRASH("stylo: shouldn't be calling Servo_SetDeclarationBlockImmutable in a "
"non-MOZ_STYLO build");
}
void
Servo_ClearDeclarationBlockCachePointer(ServoDeclarationBlock* declarations)
{
MOZ_CRASH("stylo: shouldn't be calling Servo_ClearDeclarationBlockCachePointer in a "
"non-MOZ_STYLO build");
}
bool
Servo_CSSSupports(const uint8_t* name, uint32_t name_length,
const uint8_t* value, uint32_t value_length)
{
MOZ_CRASH("stylo: shouldn't be calling Servo_CSSSupports in a "
"non-MOZ_STYLO build");
}
ServoComputedValuesStrong
Servo_GetComputedValues(RawGeckoNode* node)
{
MOZ_CRASH("stylo: shouldn't be calling Servo_GetComputedValues in a "
"non-MOZ_STYLO build");
}
ServoComputedValuesStrong
Servo_GetComputedValuesForAnonymousBox(ServoComputedValuesBorrowed parentStyleOrNull,
nsIAtom* pseudoTag,
RawServoStyleSet* set)
{
MOZ_CRASH("stylo: shouldn't be calling Servo_GetComputedValuesForAnonymousBox in a "
"non-MOZ_STYLO build");
}
ServoComputedValuesStrong
Servo_GetComputedValuesForPseudoElement(ServoComputedValuesBorrowed parent_style,
RawGeckoElement* match_element,
nsIAtom* pseudo_tag,
RawServoStyleSet* set,
bool is_probe)
{
MOZ_CRASH("stylo: shouldn't be calling Servo_GetComputedValuesForPseudoElement in a "
"non-MOZ_STYLO build");
}
ServoComputedValuesStrong
Servo_InheritComputedValues(ServoComputedValuesBorrowed parent_style)
{
MOZ_CRASH("stylo: shouldn't be calling Servo_InheritComputedValues in a "
"non-MOZ_STYLO build");
}
void
Servo_AddRefComputedValues(ServoComputedValuesBorrowed)
{
MOZ_CRASH("stylo: shouldn't be calling Servo_AddRefComputedValues in a "
"non-MOZ_STYLO build");
}
void
Servo_ReleaseComputedValues(ServoComputedValuesBorrowed)
{
MOZ_CRASH("stylo: shouldn't be calling Servo_ReleaseComputedValues in a "
"non-MOZ_STYLO build");
}
void
Servo_Initialize()
{
MOZ_CRASH("stylo: shouldn't be calling Servo_Initialize in a "
"non-MOZ_STYLO build");
}
void
Servo_Shutdown()
{
MOZ_CRASH("stylo: shouldn't be calling Servo_Shutdown in a "
"non-MOZ_STYLO build");
}
// Restyle hints.
nsRestyleHint
Servo_ComputeRestyleHint(RawGeckoElement* element,
ServoElementSnapshot* snapshot, RawServoStyleSet* set)
{
MOZ_CRASH("stylo: shouldn't be calling Servo_ComputeRestyleHint in a "
"non-MOZ_STYLO build");
}
void
Servo_RestyleDocument(RawGeckoDocument* doc, RawServoStyleSet* set)
{
MOZ_CRASH("stylo: shouldn't be calling Servo_RestyleDocument in a "
"non-MOZ_STYLO build");
}
void Servo_RestyleSubtree(RawGeckoNode* node, RawServoStyleSet* set)
{
MOZ_CRASH("stylo: shouldn't be calling Servo_RestyleSubtree in a "
"non-MOZ_STYLO build");
}
#define STYLE_STRUCT(name_, checkdata_cb_) \
const nsStyle##name_* \
Servo_GetStyle##name_(ServoComputedValuesBorrowed) \
{ \
MOZ_CRASH("stylo: shouldn't be calling Servo_GetStyle" #name_ " in a " \
"non-MOZ_STYLO build"); \
}
#include "nsStyleStructList.h"
#undef STYLE_STRUCT
#endif
#ifdef MOZ_STYLO
const nsStyleVariables*
Servo_GetStyleVariables(ServoComputedValuesBorrowed aComputedValues)
{
// Servo can't provide us with Variables structs yet, so instead of linking
// to a Servo_GetStyleVariables defined in Servo we define one here that
// always returns the same, empty struct.
static nsStyleVariables variables(StyleStructContext::ServoContext());
return &variables;
}
#endif
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