зеркало из https://github.com/mozilla/gecko-dev.git
1968 строки
50 KiB
C++
1968 строки
50 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim: set ts=8 sts=2 et sw=2 tw=80: */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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/*
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* A struct that represents the value (type and actual data) of an
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* attribute.
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*/
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#include "mozilla/DebugOnly.h"
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#include "mozilla/HashFunctions.h"
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#include "nsAttrValue.h"
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#include "nsAttrValueInlines.h"
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#include "nsAtom.h"
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#include "nsUnicharUtils.h"
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#include "mozilla/CORSMode.h"
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#include "mozilla/MemoryReporting.h"
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#include "mozilla/ServoBindingTypes.h"
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#include "mozilla/ServoUtils.h"
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#include "mozilla/DeclarationBlock.h"
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#include "nsContentUtils.h"
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#include "nsReadableUtils.h"
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#include "nsHTMLCSSStyleSheet.h"
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#include "nsStyledElement.h"
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#include "nsIURI.h"
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#include "nsIDocument.h"
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#include <algorithm>
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using namespace mozilla;
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#define MISC_STR_PTR(_cont) \
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reinterpret_cast<void*>((_cont)->mStringBits & NS_ATTRVALUE_POINTERVALUE_MASK)
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bool
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MiscContainer::GetString(nsAString& aString) const
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{
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void* ptr = MISC_STR_PTR(this);
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if (!ptr) {
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return false;
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}
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if (static_cast<nsAttrValue::ValueBaseType>(mStringBits &
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NS_ATTRVALUE_BASETYPE_MASK) ==
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nsAttrValue::eStringBase) {
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nsStringBuffer* buffer = static_cast<nsStringBuffer*>(ptr);
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if (!buffer) {
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return false;
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}
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buffer->ToString(buffer->StorageSize() / sizeof(char16_t) - 1, aString);
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return true;
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}
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nsAtom* atom = static_cast<nsAtom*>(ptr);
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if (!atom) {
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return false;
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}
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atom->ToString(aString);
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return true;
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}
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void
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MiscContainer::Cache()
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{
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// Not implemented for anything else yet.
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if (mType != nsAttrValue::eCSSDeclaration) {
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MOZ_ASSERT_UNREACHABLE("unexpected cached nsAttrValue type");
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return;
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}
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MOZ_ASSERT(IsRefCounted());
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MOZ_ASSERT(mValue.mRefCount > 0);
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MOZ_ASSERT(!mValue.mCached);
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nsHTMLCSSStyleSheet* sheet = mValue.mCSSDeclaration->GetHTMLCSSStyleSheet();
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if (!sheet) {
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return;
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}
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nsString str;
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bool gotString = GetString(str);
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if (!gotString) {
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return;
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}
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sheet->CacheStyleAttr(str, this);
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mValue.mCached = 1;
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// This has to be immutable once it goes into the cache.
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mValue.mCSSDeclaration->SetImmutable();
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}
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void
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MiscContainer::Evict()
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{
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// Not implemented for anything else yet.
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if (mType != nsAttrValue::eCSSDeclaration) {
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MOZ_ASSERT_UNREACHABLE("unexpected cached nsAttrValue type");
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return;
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}
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MOZ_ASSERT(IsRefCounted());
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MOZ_ASSERT(mValue.mRefCount == 0);
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if (!mValue.mCached) {
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return;
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}
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nsHTMLCSSStyleSheet* sheet = mValue.mCSSDeclaration->GetHTMLCSSStyleSheet();
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MOZ_ASSERT(sheet);
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nsString str;
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DebugOnly<bool> gotString = GetString(str);
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MOZ_ASSERT(gotString);
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sheet->EvictStyleAttr(str, this);
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mValue.mCached = 0;
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}
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nsTArray<const nsAttrValue::EnumTable*>* nsAttrValue::sEnumTableArray = nullptr;
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nsAttrValue::nsAttrValue()
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: mBits(0)
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{
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}
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nsAttrValue::nsAttrValue(const nsAttrValue& aOther)
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: mBits(0)
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{
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SetTo(aOther);
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}
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nsAttrValue::nsAttrValue(const nsAString& aValue)
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: mBits(0)
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{
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SetTo(aValue);
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}
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nsAttrValue::nsAttrValue(nsAtom* aValue)
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: mBits(0)
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{
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SetTo(aValue);
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}
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nsAttrValue::nsAttrValue(already_AddRefed<DeclarationBlock> aValue,
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const nsAString* aSerialized)
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: mBits(0)
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{
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SetTo(std::move(aValue), aSerialized);
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}
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nsAttrValue::nsAttrValue(const nsIntMargin& aValue)
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: mBits(0)
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{
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SetTo(aValue);
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}
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nsAttrValue::~nsAttrValue()
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{
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ResetIfSet();
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}
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/* static */
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nsresult
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nsAttrValue::Init()
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{
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NS_ASSERTION(!sEnumTableArray, "nsAttrValue already initialized");
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sEnumTableArray = new nsTArray<const EnumTable*>;
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return NS_OK;
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}
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/* static */
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void
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nsAttrValue::Shutdown()
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{
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delete sEnumTableArray;
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sEnumTableArray = nullptr;
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}
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void
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nsAttrValue::Reset()
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{
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switch(BaseType()) {
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case eStringBase:
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{
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nsStringBuffer* str = static_cast<nsStringBuffer*>(GetPtr());
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if (str) {
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str->Release();
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}
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break;
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}
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case eOtherBase:
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{
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MiscContainer* cont = GetMiscContainer();
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if (cont->IsRefCounted() && cont->mValue.mRefCount > 1) {
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NS_RELEASE(cont);
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break;
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}
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delete ClearMiscContainer();
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break;
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}
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case eAtomBase:
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{
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nsAtom* atom = GetAtomValue();
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NS_RELEASE(atom);
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break;
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}
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case eIntegerBase:
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{
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break;
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}
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}
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mBits = 0;
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}
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void
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nsAttrValue::SetTo(const nsAttrValue& aOther)
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{
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if (this == &aOther) {
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return;
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}
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switch (aOther.BaseType()) {
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case eStringBase:
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{
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ResetIfSet();
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nsStringBuffer* str = static_cast<nsStringBuffer*>(aOther.GetPtr());
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if (str) {
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str->AddRef();
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SetPtrValueAndType(str, eStringBase);
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}
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return;
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}
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case eOtherBase:
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{
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break;
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}
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case eAtomBase:
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{
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ResetIfSet();
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nsAtom* atom = aOther.GetAtomValue();
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NS_ADDREF(atom);
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SetPtrValueAndType(atom, eAtomBase);
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return;
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}
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case eIntegerBase:
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{
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ResetIfSet();
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mBits = aOther.mBits;
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return;
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}
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}
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MiscContainer* otherCont = aOther.GetMiscContainer();
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if (otherCont->IsRefCounted()) {
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delete ClearMiscContainer();
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NS_ADDREF(otherCont);
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SetPtrValueAndType(otherCont, eOtherBase);
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return;
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}
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MiscContainer* cont = EnsureEmptyMiscContainer();
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switch (otherCont->mType) {
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case eInteger:
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{
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cont->mValue.mInteger = otherCont->mValue.mInteger;
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break;
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}
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case eEnum:
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{
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cont->mValue.mEnumValue = otherCont->mValue.mEnumValue;
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break;
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}
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case ePercent:
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{
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cont->mValue.mPercent = otherCont->mValue.mPercent;
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break;
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}
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case eColor:
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{
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cont->mValue.mColor = otherCont->mValue.mColor;
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break;
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}
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case eCSSDeclaration:
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{
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MOZ_CRASH("These should be refcounted!");
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}
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case eURL:
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{
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NS_ADDREF(cont->mValue.mURL = otherCont->mValue.mURL);
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break;
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}
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case eAtomArray:
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{
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if (!EnsureEmptyAtomArray() ||
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!GetAtomArrayValue()->AppendElements(*otherCont->mValue.mAtomArray)) {
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Reset();
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return;
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}
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break;
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}
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case eDoubleValue:
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{
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cont->mDoubleValue = otherCont->mDoubleValue;
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break;
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}
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case eIntMarginValue:
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{
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if (otherCont->mValue.mIntMargin)
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cont->mValue.mIntMargin =
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new nsIntMargin(*otherCont->mValue.mIntMargin);
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break;
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}
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default:
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{
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if (IsSVGType(otherCont->mType)) {
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// All SVG types are just pointers to classes and will therefore have
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// the same size so it doesn't really matter which one we assign
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cont->mValue.mSVGAngle = otherCont->mValue.mSVGAngle;
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} else {
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NS_NOTREACHED("unknown type stored in MiscContainer");
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}
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break;
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}
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}
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void* otherPtr = MISC_STR_PTR(otherCont);
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if (otherPtr) {
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if (static_cast<ValueBaseType>(otherCont->mStringBits & NS_ATTRVALUE_BASETYPE_MASK) ==
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eStringBase) {
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static_cast<nsStringBuffer*>(otherPtr)->AddRef();
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} else {
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static_cast<nsAtom*>(otherPtr)->AddRef();
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}
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cont->SetStringBitsMainThread(otherCont->mStringBits);
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}
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// Note, set mType after switch-case, otherwise EnsureEmptyAtomArray doesn't
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// work correctly.
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cont->mType = otherCont->mType;
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}
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void
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nsAttrValue::SetTo(const nsAString& aValue)
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{
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ResetIfSet();
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nsStringBuffer* buf = GetStringBuffer(aValue).take();
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if (buf) {
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SetPtrValueAndType(buf, eStringBase);
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}
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}
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void
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nsAttrValue::SetTo(nsAtom* aValue)
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{
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ResetIfSet();
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if (aValue) {
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NS_ADDREF(aValue);
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SetPtrValueAndType(aValue, eAtomBase);
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}
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}
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void
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nsAttrValue::SetTo(int16_t aInt)
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{
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ResetIfSet();
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SetIntValueAndType(aInt, eInteger, nullptr);
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}
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void
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nsAttrValue::SetTo(int32_t aInt, const nsAString* aSerialized)
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{
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ResetIfSet();
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SetIntValueAndType(aInt, eInteger, aSerialized);
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}
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void
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nsAttrValue::SetTo(double aValue, const nsAString* aSerialized)
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{
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MiscContainer* cont = EnsureEmptyMiscContainer();
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cont->mDoubleValue = aValue;
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cont->mType = eDoubleValue;
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SetMiscAtomOrString(aSerialized);
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}
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void
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nsAttrValue::SetTo(already_AddRefed<DeclarationBlock> aValue,
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const nsAString* aSerialized)
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{
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MiscContainer* cont = EnsureEmptyMiscContainer();
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MOZ_ASSERT(cont->mValue.mRefCount == 0);
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cont->mValue.mCSSDeclaration = aValue.take();
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cont->mType = eCSSDeclaration;
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NS_ADDREF(cont);
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SetMiscAtomOrString(aSerialized);
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MOZ_ASSERT(cont->mValue.mRefCount == 1);
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}
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void
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nsAttrValue::SetTo(nsIURI* aValue, const nsAString* aSerialized)
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{
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MiscContainer* cont = EnsureEmptyMiscContainer();
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NS_ADDREF(cont->mValue.mURL = aValue);
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cont->mType = eURL;
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SetMiscAtomOrString(aSerialized);
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}
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void
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nsAttrValue::SetTo(const nsIntMargin& aValue)
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{
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MiscContainer* cont = EnsureEmptyMiscContainer();
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cont->mValue.mIntMargin = new nsIntMargin(aValue);
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cont->mType = eIntMarginValue;
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}
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void
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nsAttrValue::SetToSerialized(const nsAttrValue& aOther)
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{
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if (aOther.Type() != nsAttrValue::eString &&
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aOther.Type() != nsAttrValue::eAtom) {
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nsAutoString val;
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aOther.ToString(val);
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SetTo(val);
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} else {
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SetTo(aOther);
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}
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}
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void
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nsAttrValue::SetTo(const nsSVGAngle& aValue, const nsAString* aSerialized)
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{
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SetSVGType(eSVGAngle, &aValue, aSerialized);
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}
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void
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nsAttrValue::SetTo(const nsSVGIntegerPair& aValue, const nsAString* aSerialized)
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{
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SetSVGType(eSVGIntegerPair, &aValue, aSerialized);
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}
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void
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nsAttrValue::SetTo(const nsSVGLength2& aValue, const nsAString* aSerialized)
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{
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SetSVGType(eSVGLength, &aValue, aSerialized);
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}
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void
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nsAttrValue::SetTo(const SVGLengthList& aValue,
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const nsAString* aSerialized)
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{
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// While an empty string will parse as a length list, there's no need to store
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// it (and SetMiscAtomOrString will assert if we try)
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if (aSerialized && aSerialized->IsEmpty()) {
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aSerialized = nullptr;
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}
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SetSVGType(eSVGLengthList, &aValue, aSerialized);
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}
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void
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nsAttrValue::SetTo(const SVGNumberList& aValue,
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const nsAString* aSerialized)
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{
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// While an empty string will parse as a number list, there's no need to store
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// it (and SetMiscAtomOrString will assert if we try)
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if (aSerialized && aSerialized->IsEmpty()) {
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aSerialized = nullptr;
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}
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SetSVGType(eSVGNumberList, &aValue, aSerialized);
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}
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void
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nsAttrValue::SetTo(const nsSVGNumberPair& aValue, const nsAString* aSerialized)
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{
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SetSVGType(eSVGNumberPair, &aValue, aSerialized);
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}
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void
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nsAttrValue::SetTo(const SVGPathData& aValue,
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const nsAString* aSerialized)
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{
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// While an empty string will parse as path data, there's no need to store it
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// (and SetMiscAtomOrString will assert if we try)
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if (aSerialized && aSerialized->IsEmpty()) {
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aSerialized = nullptr;
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}
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SetSVGType(eSVGPathData, &aValue, aSerialized);
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}
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void
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nsAttrValue::SetTo(const SVGPointList& aValue,
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const nsAString* aSerialized)
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{
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// While an empty string will parse as a point list, there's no need to store
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// it (and SetMiscAtomOrString will assert if we try)
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if (aSerialized && aSerialized->IsEmpty()) {
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aSerialized = nullptr;
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}
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SetSVGType(eSVGPointList, &aValue, aSerialized);
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}
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void
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nsAttrValue::SetTo(const SVGAnimatedPreserveAspectRatio& aValue,
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const nsAString* aSerialized)
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{
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SetSVGType(eSVGPreserveAspectRatio, &aValue, aSerialized);
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}
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void
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nsAttrValue::SetTo(const SVGStringList& aValue,
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const nsAString* aSerialized)
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{
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// While an empty string will parse as a string list, there's no need to store
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// it (and SetMiscAtomOrString will assert if we try)
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if (aSerialized && aSerialized->IsEmpty()) {
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aSerialized = nullptr;
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}
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SetSVGType(eSVGStringList, &aValue, aSerialized);
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}
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void
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nsAttrValue::SetTo(const SVGTransformList& aValue,
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const nsAString* aSerialized)
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{
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// While an empty string will parse as a transform list, there's no need to
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// store it (and SetMiscAtomOrString will assert if we try)
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if (aSerialized && aSerialized->IsEmpty()) {
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aSerialized = nullptr;
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}
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SetSVGType(eSVGTransformList, &aValue, aSerialized);
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}
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void
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nsAttrValue::SetTo(const nsSVGViewBox& aValue, const nsAString* aSerialized)
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{
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SetSVGType(eSVGViewBox, &aValue, aSerialized);
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}
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void
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nsAttrValue::SwapValueWith(nsAttrValue& aOther)
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{
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uintptr_t tmp = aOther.mBits;
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aOther.mBits = mBits;
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mBits = tmp;
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}
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void
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nsAttrValue::ToString(nsAString& aResult) const
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{
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MiscContainer* cont = nullptr;
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if (BaseType() == eOtherBase) {
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cont = GetMiscContainer();
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if (cont->GetString(aResult)) {
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return;
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}
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}
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switch(Type()) {
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case eString:
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{
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nsStringBuffer* str = static_cast<nsStringBuffer*>(GetPtr());
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if (str) {
|
|
str->ToString(str->StorageSize()/sizeof(char16_t) - 1, aResult);
|
|
}
|
|
else {
|
|
aResult.Truncate();
|
|
}
|
|
break;
|
|
}
|
|
case eAtom:
|
|
{
|
|
nsAtom *atom = static_cast<nsAtom*>(GetPtr());
|
|
atom->ToString(aResult);
|
|
|
|
break;
|
|
}
|
|
case eInteger:
|
|
{
|
|
nsAutoString intStr;
|
|
intStr.AppendInt(GetIntegerValue());
|
|
aResult = intStr;
|
|
|
|
break;
|
|
}
|
|
#ifdef DEBUG
|
|
case eColor:
|
|
{
|
|
NS_NOTREACHED("color attribute without string data");
|
|
aResult.Truncate();
|
|
break;
|
|
}
|
|
#endif
|
|
case eEnum:
|
|
{
|
|
GetEnumString(aResult, false);
|
|
break;
|
|
}
|
|
case ePercent:
|
|
{
|
|
nsAutoString intStr;
|
|
intStr.AppendInt(cont ? cont->mValue.mPercent : GetIntInternal());
|
|
aResult = intStr + NS_LITERAL_STRING("%");
|
|
|
|
break;
|
|
}
|
|
case eCSSDeclaration:
|
|
{
|
|
aResult.Truncate();
|
|
MiscContainer *container = GetMiscContainer();
|
|
if (DeclarationBlock* decl = container->mValue.mCSSDeclaration) {
|
|
decl->ToString(aResult);
|
|
}
|
|
|
|
// This can be reached during parallel selector matching with attribute
|
|
// selectors on the style attribute. SetMiscAtomOrString handles this
|
|
// case, and as of this writing this is the only consumer that needs it.
|
|
const_cast<nsAttrValue*>(this)->SetMiscAtomOrString(&aResult);
|
|
|
|
break;
|
|
}
|
|
case eDoubleValue:
|
|
{
|
|
aResult.Truncate();
|
|
aResult.AppendFloat(GetDoubleValue());
|
|
break;
|
|
}
|
|
case eSVGAngle:
|
|
{
|
|
SVGAttrValueWrapper::ToString(GetMiscContainer()->mValue.mSVGAngle,
|
|
aResult);
|
|
break;
|
|
}
|
|
case eSVGIntegerPair:
|
|
{
|
|
SVGAttrValueWrapper::ToString(GetMiscContainer()->mValue.mSVGIntegerPair,
|
|
aResult);
|
|
break;
|
|
}
|
|
case eSVGLength:
|
|
{
|
|
SVGAttrValueWrapper::ToString(GetMiscContainer()->mValue.mSVGLength,
|
|
aResult);
|
|
break;
|
|
}
|
|
case eSVGLengthList:
|
|
{
|
|
SVGAttrValueWrapper::ToString(GetMiscContainer()->mValue.mSVGLengthList,
|
|
aResult);
|
|
break;
|
|
}
|
|
case eSVGNumberList:
|
|
{
|
|
SVGAttrValueWrapper::ToString(GetMiscContainer()->mValue.mSVGNumberList,
|
|
aResult);
|
|
break;
|
|
}
|
|
case eSVGNumberPair:
|
|
{
|
|
SVGAttrValueWrapper::ToString(GetMiscContainer()->mValue.mSVGNumberPair,
|
|
aResult);
|
|
break;
|
|
}
|
|
case eSVGPathData:
|
|
{
|
|
SVGAttrValueWrapper::ToString(GetMiscContainer()->mValue.mSVGPathData,
|
|
aResult);
|
|
break;
|
|
}
|
|
case eSVGPointList:
|
|
{
|
|
SVGAttrValueWrapper::ToString(GetMiscContainer()->mValue.mSVGPointList,
|
|
aResult);
|
|
break;
|
|
}
|
|
case eSVGPreserveAspectRatio:
|
|
{
|
|
SVGAttrValueWrapper::ToString(GetMiscContainer()->mValue.mSVGPreserveAspectRatio,
|
|
aResult);
|
|
break;
|
|
}
|
|
case eSVGStringList:
|
|
{
|
|
SVGAttrValueWrapper::ToString(GetMiscContainer()->mValue.mSVGStringList,
|
|
aResult);
|
|
break;
|
|
}
|
|
case eSVGTransformList:
|
|
{
|
|
SVGAttrValueWrapper::ToString(GetMiscContainer()->mValue.mSVGTransformList,
|
|
aResult);
|
|
break;
|
|
}
|
|
case eSVGViewBox:
|
|
{
|
|
SVGAttrValueWrapper::ToString(GetMiscContainer()->mValue.mSVGViewBox,
|
|
aResult);
|
|
break;
|
|
}
|
|
default:
|
|
{
|
|
aResult.Truncate();
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
already_AddRefed<nsAtom>
|
|
nsAttrValue::GetAsAtom() const
|
|
{
|
|
switch (Type()) {
|
|
case eString:
|
|
return NS_AtomizeMainThread(GetStringValue());
|
|
|
|
case eAtom:
|
|
{
|
|
RefPtr<nsAtom> atom = GetAtomValue();
|
|
return atom.forget();
|
|
}
|
|
|
|
default:
|
|
{
|
|
nsAutoString val;
|
|
ToString(val);
|
|
return NS_AtomizeMainThread(val);
|
|
}
|
|
}
|
|
}
|
|
|
|
const nsCheapString
|
|
nsAttrValue::GetStringValue() const
|
|
{
|
|
MOZ_ASSERT(Type() == eString, "wrong type");
|
|
|
|
return nsCheapString(static_cast<nsStringBuffer*>(GetPtr()));
|
|
}
|
|
|
|
bool
|
|
nsAttrValue::GetColorValue(nscolor& aColor) const
|
|
{
|
|
if (Type() != eColor) {
|
|
// Unparseable value, treat as unset.
|
|
NS_ASSERTION(Type() == eString, "unexpected type for color-valued attr");
|
|
return false;
|
|
}
|
|
|
|
aColor = GetMiscContainer()->mValue.mColor;
|
|
return true;
|
|
}
|
|
|
|
void
|
|
nsAttrValue::GetEnumString(nsAString& aResult, bool aRealTag) const
|
|
{
|
|
MOZ_ASSERT(Type() == eEnum, "wrong type");
|
|
|
|
uint32_t allEnumBits =
|
|
(BaseType() == eIntegerBase) ? static_cast<uint32_t>(GetIntInternal())
|
|
: GetMiscContainer()->mValue.mEnumValue;
|
|
int16_t val = allEnumBits >> NS_ATTRVALUE_ENUMTABLEINDEX_BITS;
|
|
const EnumTable* table = sEnumTableArray->
|
|
ElementAt(allEnumBits & NS_ATTRVALUE_ENUMTABLEINDEX_MASK);
|
|
|
|
while (table->tag) {
|
|
if (table->value == val) {
|
|
aResult.AssignASCII(table->tag);
|
|
if (!aRealTag && allEnumBits & NS_ATTRVALUE_ENUMTABLE_VALUE_NEEDS_TO_UPPER) {
|
|
nsContentUtils::ASCIIToUpper(aResult);
|
|
}
|
|
return;
|
|
}
|
|
table++;
|
|
}
|
|
|
|
NS_NOTREACHED("couldn't find value in EnumTable");
|
|
}
|
|
|
|
uint32_t
|
|
nsAttrValue::GetAtomCount() const
|
|
{
|
|
ValueType type = Type();
|
|
|
|
if (type == eAtom) {
|
|
return 1;
|
|
}
|
|
|
|
if (type == eAtomArray) {
|
|
return GetAtomArrayValue()->Length();
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
nsAtom*
|
|
nsAttrValue::AtomAt(int32_t aIndex) const
|
|
{
|
|
MOZ_ASSERT(aIndex >= 0, "Index must not be negative");
|
|
MOZ_ASSERT(GetAtomCount() > uint32_t(aIndex), "aIndex out of range");
|
|
|
|
if (BaseType() == eAtomBase) {
|
|
return GetAtomValue();
|
|
}
|
|
|
|
NS_ASSERTION(Type() == eAtomArray, "GetAtomCount must be confused");
|
|
|
|
return GetAtomArrayValue()->ElementAt(aIndex);
|
|
}
|
|
|
|
uint32_t
|
|
nsAttrValue::HashValue() const
|
|
{
|
|
switch(BaseType()) {
|
|
case eStringBase:
|
|
{
|
|
nsStringBuffer* str = static_cast<nsStringBuffer*>(GetPtr());
|
|
if (str) {
|
|
uint32_t len = str->StorageSize()/sizeof(char16_t) - 1;
|
|
return HashString(static_cast<char16_t*>(str->Data()), len);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
case eOtherBase:
|
|
{
|
|
break;
|
|
}
|
|
case eAtomBase:
|
|
case eIntegerBase:
|
|
{
|
|
// mBits and uint32_t might have different size. This should silence
|
|
// any warnings or compile-errors. This is what the implementation of
|
|
// NS_PTR_TO_INT32 does to take care of the same problem.
|
|
return mBits - 0;
|
|
}
|
|
}
|
|
|
|
MiscContainer* cont = GetMiscContainer();
|
|
if (static_cast<ValueBaseType>(cont->mStringBits & NS_ATTRVALUE_BASETYPE_MASK)
|
|
== eAtomBase) {
|
|
return cont->mStringBits - 0;
|
|
}
|
|
|
|
switch (cont->mType) {
|
|
case eInteger:
|
|
{
|
|
return cont->mValue.mInteger;
|
|
}
|
|
case eEnum:
|
|
{
|
|
return cont->mValue.mEnumValue;
|
|
}
|
|
case ePercent:
|
|
{
|
|
return cont->mValue.mPercent;
|
|
}
|
|
case eColor:
|
|
{
|
|
return cont->mValue.mColor;
|
|
}
|
|
case eCSSDeclaration:
|
|
{
|
|
return NS_PTR_TO_INT32(cont->mValue.mCSSDeclaration);
|
|
}
|
|
case eURL:
|
|
{
|
|
nsString str;
|
|
ToString(str);
|
|
return HashString(str);
|
|
}
|
|
case eAtomArray:
|
|
{
|
|
uint32_t hash = 0;
|
|
uint32_t count = cont->mValue.mAtomArray->Length();
|
|
for (RefPtr<nsAtom> *cur = cont->mValue.mAtomArray->Elements(),
|
|
*end = cur + count;
|
|
cur != end; ++cur) {
|
|
hash = AddToHash(hash, cur->get());
|
|
}
|
|
return hash;
|
|
}
|
|
case eDoubleValue:
|
|
{
|
|
// XXX this is crappy, but oh well
|
|
return cont->mDoubleValue;
|
|
}
|
|
case eIntMarginValue:
|
|
{
|
|
return NS_PTR_TO_INT32(cont->mValue.mIntMargin);
|
|
}
|
|
default:
|
|
{
|
|
if (IsSVGType(cont->mType)) {
|
|
// All SVG types are just pointers to classes so we can treat them alike
|
|
return NS_PTR_TO_INT32(cont->mValue.mSVGAngle);
|
|
}
|
|
NS_NOTREACHED("unknown type stored in MiscContainer");
|
|
return 0;
|
|
}
|
|
}
|
|
}
|
|
|
|
bool
|
|
nsAttrValue::Equals(const nsAttrValue& aOther) const
|
|
{
|
|
if (BaseType() != aOther.BaseType()) {
|
|
return false;
|
|
}
|
|
|
|
switch(BaseType()) {
|
|
case eStringBase:
|
|
{
|
|
return GetStringValue().Equals(aOther.GetStringValue());
|
|
}
|
|
case eOtherBase:
|
|
{
|
|
break;
|
|
}
|
|
case eAtomBase:
|
|
case eIntegerBase:
|
|
{
|
|
return mBits == aOther.mBits;
|
|
}
|
|
}
|
|
|
|
MiscContainer* thisCont = GetMiscContainer();
|
|
MiscContainer* otherCont = aOther.GetMiscContainer();
|
|
if (thisCont == otherCont) {
|
|
return true;
|
|
}
|
|
|
|
if (thisCont->mType != otherCont->mType) {
|
|
return false;
|
|
}
|
|
|
|
bool needsStringComparison = false;
|
|
|
|
switch (thisCont->mType) {
|
|
case eInteger:
|
|
{
|
|
if (thisCont->mValue.mInteger == otherCont->mValue.mInteger) {
|
|
needsStringComparison = true;
|
|
}
|
|
break;
|
|
}
|
|
case eEnum:
|
|
{
|
|
if (thisCont->mValue.mEnumValue == otherCont->mValue.mEnumValue) {
|
|
needsStringComparison = true;
|
|
}
|
|
break;
|
|
}
|
|
case ePercent:
|
|
{
|
|
if (thisCont->mValue.mPercent == otherCont->mValue.mPercent) {
|
|
needsStringComparison = true;
|
|
}
|
|
break;
|
|
}
|
|
case eColor:
|
|
{
|
|
if (thisCont->mValue.mColor == otherCont->mValue.mColor) {
|
|
needsStringComparison = true;
|
|
}
|
|
break;
|
|
}
|
|
case eCSSDeclaration:
|
|
{
|
|
return thisCont->mValue.mCSSDeclaration ==
|
|
otherCont->mValue.mCSSDeclaration;
|
|
}
|
|
case eURL:
|
|
{
|
|
return thisCont->mValue.mURL == otherCont->mValue.mURL;
|
|
}
|
|
case eAtomArray:
|
|
{
|
|
// For classlists we could be insensitive to order, however
|
|
// classlists are never mapped attributes so they are never compared.
|
|
|
|
if (!(*thisCont->mValue.mAtomArray == *otherCont->mValue.mAtomArray)) {
|
|
return false;
|
|
}
|
|
|
|
needsStringComparison = true;
|
|
break;
|
|
}
|
|
case eDoubleValue:
|
|
{
|
|
return thisCont->mDoubleValue == otherCont->mDoubleValue;
|
|
}
|
|
case eIntMarginValue:
|
|
{
|
|
return thisCont->mValue.mIntMargin == otherCont->mValue.mIntMargin;
|
|
}
|
|
default:
|
|
{
|
|
if (IsSVGType(thisCont->mType)) {
|
|
// Currently this method is never called for nsAttrValue objects that
|
|
// point to SVG data types.
|
|
// If that changes then we probably want to add methods to the
|
|
// corresponding SVG types to compare their base values.
|
|
// As a shortcut, however, we can begin by comparing the pointers.
|
|
MOZ_ASSERT(false, "Comparing nsAttrValues that point to SVG data");
|
|
return false;
|
|
}
|
|
NS_NOTREACHED("unknown type stored in MiscContainer");
|
|
return false;
|
|
}
|
|
}
|
|
if (needsStringComparison) {
|
|
if (thisCont->mStringBits == otherCont->mStringBits) {
|
|
return true;
|
|
}
|
|
if ((static_cast<ValueBaseType>(thisCont->mStringBits & NS_ATTRVALUE_BASETYPE_MASK) ==
|
|
eStringBase) &&
|
|
(static_cast<ValueBaseType>(otherCont->mStringBits & NS_ATTRVALUE_BASETYPE_MASK) ==
|
|
eStringBase)) {
|
|
return nsCheapString(reinterpret_cast<nsStringBuffer*>(static_cast<uintptr_t>(thisCont->mStringBits))).Equals(
|
|
nsCheapString(reinterpret_cast<nsStringBuffer*>(static_cast<uintptr_t>(otherCont->mStringBits))));
|
|
}
|
|
}
|
|
return false;
|
|
}
|
|
|
|
bool
|
|
nsAttrValue::Equals(const nsAString& aValue,
|
|
nsCaseTreatment aCaseSensitive) const
|
|
{
|
|
switch (BaseType()) {
|
|
case eStringBase:
|
|
{
|
|
nsStringBuffer* str = static_cast<nsStringBuffer*>(GetPtr());
|
|
if (str) {
|
|
nsDependentString dep(static_cast<char16_t*>(str->Data()),
|
|
str->StorageSize()/sizeof(char16_t) - 1);
|
|
return aCaseSensitive == eCaseMatters ? aValue.Equals(dep) :
|
|
nsContentUtils::EqualsIgnoreASCIICase(aValue, dep);
|
|
}
|
|
return aValue.IsEmpty();
|
|
}
|
|
case eAtomBase:
|
|
if (aCaseSensitive == eCaseMatters) {
|
|
return static_cast<nsAtom*>(GetPtr())->Equals(aValue);
|
|
}
|
|
return nsContentUtils::EqualsIgnoreASCIICase(
|
|
nsDependentAtomString(static_cast<nsAtom*>(GetPtr())),
|
|
aValue);
|
|
default:
|
|
break;
|
|
}
|
|
|
|
nsAutoString val;
|
|
ToString(val);
|
|
return aCaseSensitive == eCaseMatters ? val.Equals(aValue) :
|
|
nsContentUtils::EqualsIgnoreASCIICase(val, aValue);
|
|
}
|
|
|
|
bool
|
|
nsAttrValue::Equals(nsAtom* aValue, nsCaseTreatment aCaseSensitive) const
|
|
{
|
|
if (aCaseSensitive != eCaseMatters) {
|
|
// Need a better way to handle this!
|
|
nsAutoString value;
|
|
aValue->ToString(value);
|
|
return Equals(value, aCaseSensitive);
|
|
}
|
|
|
|
switch (BaseType()) {
|
|
case eStringBase:
|
|
{
|
|
nsStringBuffer* str = static_cast<nsStringBuffer*>(GetPtr());
|
|
if (str) {
|
|
nsDependentString dep(static_cast<char16_t*>(str->Data()),
|
|
str->StorageSize()/sizeof(char16_t) - 1);
|
|
return aValue->Equals(dep);
|
|
}
|
|
return aValue == nsGkAtoms::_empty;
|
|
}
|
|
case eAtomBase:
|
|
{
|
|
return static_cast<nsAtom*>(GetPtr()) == aValue;
|
|
}
|
|
default:
|
|
break;
|
|
}
|
|
|
|
nsAutoString val;
|
|
ToString(val);
|
|
return aValue->Equals(val);
|
|
}
|
|
|
|
bool
|
|
nsAttrValue::EqualsAsStrings(const nsAttrValue& aOther) const
|
|
{
|
|
if (Type() == aOther.Type()) {
|
|
return Equals(aOther);
|
|
}
|
|
|
|
// We need to serialize at least one nsAttrValue before passing to
|
|
// Equals(const nsAString&), but we can avoid unnecessarily serializing both
|
|
// by checking if one is already of a string type.
|
|
bool thisIsString = (BaseType() == eStringBase || BaseType() == eAtomBase);
|
|
const nsAttrValue& lhs = thisIsString ? *this : aOther;
|
|
const nsAttrValue& rhs = thisIsString ? aOther : *this;
|
|
|
|
switch (rhs.BaseType()) {
|
|
case eAtomBase:
|
|
return lhs.Equals(rhs.GetAtomValue(), eCaseMatters);
|
|
|
|
case eStringBase:
|
|
return lhs.Equals(rhs.GetStringValue(), eCaseMatters);
|
|
|
|
default:
|
|
{
|
|
nsAutoString val;
|
|
rhs.ToString(val);
|
|
return lhs.Equals(val, eCaseMatters);
|
|
}
|
|
}
|
|
}
|
|
|
|
bool
|
|
nsAttrValue::Contains(nsAtom* aValue, nsCaseTreatment aCaseSensitive) const
|
|
{
|
|
switch (BaseType()) {
|
|
case eAtomBase:
|
|
{
|
|
nsAtom* atom = GetAtomValue();
|
|
|
|
if (aCaseSensitive == eCaseMatters) {
|
|
return aValue == atom;
|
|
}
|
|
|
|
// For performance reasons, don't do a full on unicode case insensitive
|
|
// string comparison. This is only used for quirks mode anyway.
|
|
return
|
|
nsContentUtils::EqualsIgnoreASCIICase(nsDependentAtomString(aValue),
|
|
nsDependentAtomString(atom));
|
|
}
|
|
default:
|
|
{
|
|
if (Type() == eAtomArray) {
|
|
AtomArray* array = GetAtomArrayValue();
|
|
if (aCaseSensitive == eCaseMatters) {
|
|
return array->Contains(aValue);
|
|
}
|
|
|
|
nsDependentAtomString val1(aValue);
|
|
|
|
for (RefPtr<nsAtom> *cur = array->Elements(),
|
|
*end = cur + array->Length();
|
|
cur != end; ++cur) {
|
|
// For performance reasons, don't do a full on unicode case
|
|
// insensitive string comparison. This is only used for quirks mode
|
|
// anyway.
|
|
if (nsContentUtils::EqualsIgnoreASCIICase(val1,
|
|
nsDependentAtomString(*cur))) {
|
|
return true;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
struct AtomArrayStringComparator {
|
|
bool Equals(nsAtom* atom, const nsAString& string) const {
|
|
return atom->Equals(string);
|
|
}
|
|
};
|
|
|
|
bool
|
|
nsAttrValue::Contains(const nsAString& aValue) const
|
|
{
|
|
switch (BaseType()) {
|
|
case eAtomBase:
|
|
{
|
|
nsAtom* atom = GetAtomValue();
|
|
return atom->Equals(aValue);
|
|
}
|
|
default:
|
|
{
|
|
if (Type() == eAtomArray) {
|
|
AtomArray* array = GetAtomArrayValue();
|
|
return array->Contains(aValue, AtomArrayStringComparator());
|
|
}
|
|
}
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
void
|
|
nsAttrValue::ParseAtom(const nsAString& aValue)
|
|
{
|
|
ResetIfSet();
|
|
|
|
RefPtr<nsAtom> atom = NS_Atomize(aValue);
|
|
if (atom) {
|
|
SetPtrValueAndType(atom.forget().take(), eAtomBase);
|
|
}
|
|
}
|
|
|
|
void
|
|
nsAttrValue::ParseAtomArray(const nsAString& aValue)
|
|
{
|
|
nsAString::const_iterator iter, end;
|
|
aValue.BeginReading(iter);
|
|
aValue.EndReading(end);
|
|
bool hasSpace = false;
|
|
|
|
// skip initial whitespace
|
|
while (iter != end && nsContentUtils::IsHTMLWhitespace(*iter)) {
|
|
hasSpace = true;
|
|
++iter;
|
|
}
|
|
|
|
if (iter == end) {
|
|
SetTo(aValue);
|
|
return;
|
|
}
|
|
|
|
nsAString::const_iterator start(iter);
|
|
|
|
// get first - and often only - atom
|
|
do {
|
|
++iter;
|
|
} while (iter != end && !nsContentUtils::IsHTMLWhitespace(*iter));
|
|
|
|
RefPtr<nsAtom> classAtom = NS_AtomizeMainThread(Substring(start, iter));
|
|
if (!classAtom) {
|
|
Reset();
|
|
return;
|
|
}
|
|
|
|
// skip whitespace
|
|
while (iter != end && nsContentUtils::IsHTMLWhitespace(*iter)) {
|
|
hasSpace = true;
|
|
++iter;
|
|
}
|
|
|
|
if (iter == end && !hasSpace) {
|
|
// we only found one classname and there was no whitespace so
|
|
// don't bother storing a list
|
|
ResetIfSet();
|
|
nsAtom* atom = nullptr;
|
|
classAtom.swap(atom);
|
|
SetPtrValueAndType(atom, eAtomBase);
|
|
return;
|
|
}
|
|
|
|
if (!EnsureEmptyAtomArray()) {
|
|
return;
|
|
}
|
|
|
|
AtomArray* array = GetAtomArrayValue();
|
|
|
|
if (!array->AppendElement(std::move(classAtom))) {
|
|
Reset();
|
|
return;
|
|
}
|
|
|
|
// parse the rest of the classnames
|
|
while (iter != end) {
|
|
start = iter;
|
|
|
|
do {
|
|
++iter;
|
|
} while (iter != end && !nsContentUtils::IsHTMLWhitespace(*iter));
|
|
|
|
classAtom = NS_AtomizeMainThread(Substring(start, iter));
|
|
|
|
if (!array->AppendElement(std::move(classAtom))) {
|
|
Reset();
|
|
return;
|
|
}
|
|
|
|
// skip whitespace
|
|
while (iter != end && nsContentUtils::IsHTMLWhitespace(*iter)) {
|
|
++iter;
|
|
}
|
|
}
|
|
|
|
SetMiscAtomOrString(&aValue);
|
|
}
|
|
|
|
void
|
|
nsAttrValue::ParseStringOrAtom(const nsAString& aValue)
|
|
{
|
|
uint32_t len = aValue.Length();
|
|
// Don't bother with atoms if it's an empty string since
|
|
// we can store those efficently anyway.
|
|
if (len && len <= NS_ATTRVALUE_MAX_STRINGLENGTH_ATOM) {
|
|
ParseAtom(aValue);
|
|
}
|
|
else {
|
|
SetTo(aValue);
|
|
}
|
|
}
|
|
|
|
void
|
|
nsAttrValue::SetIntValueAndType(int32_t aValue, ValueType aType,
|
|
const nsAString* aStringValue)
|
|
{
|
|
if (aStringValue || aValue > NS_ATTRVALUE_INTEGERTYPE_MAXVALUE ||
|
|
aValue < NS_ATTRVALUE_INTEGERTYPE_MINVALUE) {
|
|
MiscContainer* cont = EnsureEmptyMiscContainer();
|
|
switch (aType) {
|
|
case eInteger:
|
|
{
|
|
cont->mValue.mInteger = aValue;
|
|
break;
|
|
}
|
|
case ePercent:
|
|
{
|
|
cont->mValue.mPercent = aValue;
|
|
break;
|
|
}
|
|
case eEnum:
|
|
{
|
|
cont->mValue.mEnumValue = aValue;
|
|
break;
|
|
}
|
|
default:
|
|
{
|
|
NS_NOTREACHED("unknown integer type");
|
|
break;
|
|
}
|
|
}
|
|
cont->mType = aType;
|
|
SetMiscAtomOrString(aStringValue);
|
|
} else {
|
|
NS_ASSERTION(!mBits, "Reset before calling SetIntValueAndType!");
|
|
mBits = (aValue * NS_ATTRVALUE_INTEGERTYPE_MULTIPLIER) | aType;
|
|
}
|
|
}
|
|
|
|
int16_t
|
|
nsAttrValue::GetEnumTableIndex(const EnumTable* aTable)
|
|
{
|
|
int16_t index = sEnumTableArray->IndexOf(aTable);
|
|
if (index < 0) {
|
|
index = sEnumTableArray->Length();
|
|
NS_ASSERTION(index <= NS_ATTRVALUE_ENUMTABLEINDEX_MAXVALUE,
|
|
"too many enum tables");
|
|
sEnumTableArray->AppendElement(aTable);
|
|
}
|
|
|
|
return index;
|
|
}
|
|
|
|
int32_t
|
|
nsAttrValue::EnumTableEntryToValue(const EnumTable* aEnumTable,
|
|
const EnumTable* aTableEntry)
|
|
{
|
|
int16_t index = GetEnumTableIndex(aEnumTable);
|
|
int32_t value = (aTableEntry->value << NS_ATTRVALUE_ENUMTABLEINDEX_BITS) +
|
|
index;
|
|
return value;
|
|
}
|
|
|
|
bool
|
|
nsAttrValue::ParseEnumValue(const nsAString& aValue,
|
|
const EnumTable* aTable,
|
|
bool aCaseSensitive,
|
|
const EnumTable* aDefaultValue)
|
|
{
|
|
ResetIfSet();
|
|
const EnumTable* tableEntry = aTable;
|
|
|
|
while (tableEntry->tag) {
|
|
if (aCaseSensitive ? aValue.EqualsASCII(tableEntry->tag) :
|
|
aValue.LowerCaseEqualsASCII(tableEntry->tag)) {
|
|
int32_t value = EnumTableEntryToValue(aTable, tableEntry);
|
|
|
|
bool equals = aCaseSensitive || aValue.EqualsASCII(tableEntry->tag);
|
|
if (!equals) {
|
|
nsAutoString tag;
|
|
tag.AssignASCII(tableEntry->tag);
|
|
nsContentUtils::ASCIIToUpper(tag);
|
|
if ((equals = tag.Equals(aValue))) {
|
|
value |= NS_ATTRVALUE_ENUMTABLE_VALUE_NEEDS_TO_UPPER;
|
|
}
|
|
}
|
|
SetIntValueAndType(value, eEnum, equals ? nullptr : &aValue);
|
|
NS_ASSERTION(GetEnumValue() == tableEntry->value,
|
|
"failed to store enum properly");
|
|
|
|
return true;
|
|
}
|
|
tableEntry++;
|
|
}
|
|
|
|
if (aDefaultValue) {
|
|
MOZ_ASSERT(aTable <= aDefaultValue && aDefaultValue < tableEntry,
|
|
"aDefaultValue not inside aTable?");
|
|
SetIntValueAndType(EnumTableEntryToValue(aTable, aDefaultValue),
|
|
eEnum, &aValue);
|
|
return true;
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
bool
|
|
nsAttrValue::ParseSpecialIntValue(const nsAString& aString)
|
|
{
|
|
ResetIfSet();
|
|
|
|
nsAutoString tmp(aString);
|
|
nsContentUtils::ParseHTMLIntegerResultFlags result;
|
|
int32_t originalVal = nsContentUtils::ParseHTMLInteger(aString, &result);
|
|
|
|
if (result & nsContentUtils::eParseHTMLInteger_Error) {
|
|
return false;
|
|
}
|
|
|
|
bool isPercent = result & nsContentUtils::eParseHTMLInteger_IsPercent;
|
|
int32_t val = std::max(originalVal, 0);
|
|
bool nonStrict = val != originalVal ||
|
|
(result & nsContentUtils::eParseHTMLInteger_NonStandard) ||
|
|
(result & nsContentUtils::eParseHTMLInteger_DidNotConsumeAllInput);
|
|
|
|
// % (percent)
|
|
if (isPercent || tmp.RFindChar('%') >= 0) {
|
|
isPercent = true;
|
|
}
|
|
|
|
SetIntValueAndType(val, isPercent ? ePercent : eInteger,
|
|
nonStrict ? &aString : nullptr);
|
|
return true;
|
|
}
|
|
|
|
bool
|
|
nsAttrValue::ParseIntWithBounds(const nsAString& aString,
|
|
int32_t aMin, int32_t aMax)
|
|
{
|
|
MOZ_ASSERT(aMin < aMax, "bad boundaries");
|
|
|
|
ResetIfSet();
|
|
|
|
nsContentUtils::ParseHTMLIntegerResultFlags result;
|
|
int32_t originalVal = nsContentUtils::ParseHTMLInteger(aString, &result);
|
|
if (result & nsContentUtils::eParseHTMLInteger_Error) {
|
|
return false;
|
|
}
|
|
|
|
int32_t val = std::max(originalVal, aMin);
|
|
val = std::min(val, aMax);
|
|
bool nonStrict = (val != originalVal) ||
|
|
(result & nsContentUtils::eParseHTMLInteger_IsPercent) ||
|
|
(result & nsContentUtils::eParseHTMLInteger_NonStandard) ||
|
|
(result & nsContentUtils::eParseHTMLInteger_DidNotConsumeAllInput);
|
|
|
|
SetIntValueAndType(val, eInteger, nonStrict ? &aString : nullptr);
|
|
|
|
return true;
|
|
}
|
|
|
|
void
|
|
nsAttrValue::ParseIntWithFallback(const nsAString& aString, int32_t aDefault,
|
|
int32_t aMax)
|
|
{
|
|
ResetIfSet();
|
|
|
|
nsContentUtils::ParseHTMLIntegerResultFlags result;
|
|
int32_t val = nsContentUtils::ParseHTMLInteger(aString, &result);
|
|
bool nonStrict = false;
|
|
if ((result & nsContentUtils::eParseHTMLInteger_Error) || val < 1) {
|
|
val = aDefault;
|
|
nonStrict = true;
|
|
}
|
|
|
|
if (val > aMax) {
|
|
val = aMax;
|
|
nonStrict = true;
|
|
}
|
|
|
|
if ((result & nsContentUtils::eParseHTMLInteger_IsPercent) ||
|
|
(result & nsContentUtils::eParseHTMLInteger_NonStandard) ||
|
|
(result & nsContentUtils::eParseHTMLInteger_DidNotConsumeAllInput)) {
|
|
nonStrict = true;
|
|
}
|
|
|
|
SetIntValueAndType(val, eInteger, nonStrict ? &aString : nullptr);
|
|
}
|
|
|
|
void
|
|
nsAttrValue::ParseClampedNonNegativeInt(const nsAString& aString,
|
|
int32_t aDefault, int32_t aMin,
|
|
int32_t aMax)
|
|
{
|
|
ResetIfSet();
|
|
|
|
nsContentUtils::ParseHTMLIntegerResultFlags result;
|
|
int32_t val = nsContentUtils::ParseHTMLInteger(aString, &result);
|
|
bool nonStrict = (result & nsContentUtils::eParseHTMLInteger_IsPercent) ||
|
|
(result & nsContentUtils::eParseHTMLInteger_NonStandard) ||
|
|
(result & nsContentUtils::eParseHTMLInteger_DidNotConsumeAllInput);
|
|
|
|
if (result & nsContentUtils::eParseHTMLInteger_ErrorOverflow) {
|
|
if (result & nsContentUtils::eParseHTMLInteger_Negative) {
|
|
val = aDefault;
|
|
} else {
|
|
val = aMax;
|
|
}
|
|
nonStrict = true;
|
|
} else if ((result & nsContentUtils::eParseHTMLInteger_Error) || val < 0) {
|
|
val = aDefault;
|
|
nonStrict = true;
|
|
} else if (val < aMin) {
|
|
val = aMin;
|
|
nonStrict = true;
|
|
} else if (val > aMax) {
|
|
val = aMax;
|
|
nonStrict = true;
|
|
}
|
|
|
|
SetIntValueAndType(val, eInteger, nonStrict ? &aString : nullptr);
|
|
}
|
|
|
|
bool
|
|
nsAttrValue::ParseNonNegativeIntValue(const nsAString& aString)
|
|
{
|
|
ResetIfSet();
|
|
|
|
nsContentUtils::ParseHTMLIntegerResultFlags result;
|
|
int32_t originalVal = nsContentUtils::ParseHTMLInteger(aString, &result);
|
|
if ((result & nsContentUtils::eParseHTMLInteger_Error) || originalVal < 0) {
|
|
return false;
|
|
}
|
|
|
|
bool nonStrict = (result & nsContentUtils::eParseHTMLInteger_IsPercent) ||
|
|
(result & nsContentUtils::eParseHTMLInteger_NonStandard) ||
|
|
(result & nsContentUtils::eParseHTMLInteger_DidNotConsumeAllInput);
|
|
|
|
SetIntValueAndType(originalVal, eInteger, nonStrict ? &aString : nullptr);
|
|
|
|
return true;
|
|
}
|
|
|
|
bool
|
|
nsAttrValue::ParsePositiveIntValue(const nsAString& aString)
|
|
{
|
|
ResetIfSet();
|
|
|
|
nsContentUtils::ParseHTMLIntegerResultFlags result;
|
|
int32_t originalVal = nsContentUtils::ParseHTMLInteger(aString, &result);
|
|
if ((result & nsContentUtils::eParseHTMLInteger_Error) || originalVal <= 0) {
|
|
return false;
|
|
}
|
|
|
|
bool nonStrict = (result & nsContentUtils::eParseHTMLInteger_IsPercent) ||
|
|
(result & nsContentUtils::eParseHTMLInteger_NonStandard) ||
|
|
(result & nsContentUtils::eParseHTMLInteger_DidNotConsumeAllInput);
|
|
|
|
SetIntValueAndType(originalVal, eInteger, nonStrict ? &aString : nullptr);
|
|
|
|
return true;
|
|
}
|
|
|
|
void
|
|
nsAttrValue::SetColorValue(nscolor aColor, const nsAString& aString)
|
|
{
|
|
nsStringBuffer* buf = GetStringBuffer(aString).take();
|
|
if (!buf) {
|
|
return;
|
|
}
|
|
|
|
MiscContainer* cont = EnsureEmptyMiscContainer();
|
|
cont->mValue.mColor = aColor;
|
|
cont->mType = eColor;
|
|
|
|
// Save the literal string we were passed for round-tripping.
|
|
cont->SetStringBitsMainThread(reinterpret_cast<uintptr_t>(buf) | eStringBase);
|
|
}
|
|
|
|
bool
|
|
nsAttrValue::ParseColor(const nsAString& aString)
|
|
{
|
|
ResetIfSet();
|
|
|
|
// FIXME (partially, at least): HTML5's algorithm says we shouldn't do
|
|
// the whitespace compression, trimming, or the test for emptiness.
|
|
// (I'm a little skeptical that we shouldn't do the whitespace
|
|
// trimming; WebKit also does it.)
|
|
nsAutoString colorStr(aString);
|
|
colorStr.CompressWhitespace(true, true);
|
|
if (colorStr.IsEmpty()) {
|
|
return false;
|
|
}
|
|
|
|
nscolor color;
|
|
// No color names begin with a '#'; in standards mode, all acceptable
|
|
// numeric colors do.
|
|
if (colorStr.First() == '#') {
|
|
nsDependentString withoutHash(colorStr.get() + 1, colorStr.Length() - 1);
|
|
if (NS_HexToRGBA(withoutHash, nsHexColorType::NoAlpha, &color)) {
|
|
SetColorValue(color, aString);
|
|
return true;
|
|
}
|
|
} else {
|
|
if (NS_ColorNameToRGB(colorStr, &color)) {
|
|
SetColorValue(color, aString);
|
|
return true;
|
|
}
|
|
}
|
|
|
|
// FIXME (maybe): HTML5 says we should handle system colors. This
|
|
// means we probably need another storage type, since we'd need to
|
|
// handle dynamic changes. However, I think this is a bad idea:
|
|
// http://lists.whatwg.org/pipermail/whatwg-whatwg.org/2010-May/026449.html
|
|
|
|
// Use NS_LooseHexToRGB as a fallback if nothing above worked.
|
|
if (NS_LooseHexToRGB(colorStr, &color)) {
|
|
SetColorValue(color, aString);
|
|
return true;
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
bool nsAttrValue::ParseDoubleValue(const nsAString& aString)
|
|
{
|
|
ResetIfSet();
|
|
|
|
nsresult ec;
|
|
double val = PromiseFlatString(aString).ToDouble(&ec);
|
|
if (NS_FAILED(ec)) {
|
|
return false;
|
|
}
|
|
|
|
MiscContainer* cont = EnsureEmptyMiscContainer();
|
|
cont->mDoubleValue = val;
|
|
cont->mType = eDoubleValue;
|
|
nsAutoString serializedFloat;
|
|
serializedFloat.AppendFloat(val);
|
|
SetMiscAtomOrString(serializedFloat.Equals(aString) ? nullptr : &aString);
|
|
return true;
|
|
}
|
|
|
|
bool
|
|
nsAttrValue::ParseIntMarginValue(const nsAString& aString)
|
|
{
|
|
ResetIfSet();
|
|
|
|
nsIntMargin margins;
|
|
if (!nsContentUtils::ParseIntMarginValue(aString, margins))
|
|
return false;
|
|
|
|
MiscContainer* cont = EnsureEmptyMiscContainer();
|
|
cont->mValue.mIntMargin = new nsIntMargin(margins);
|
|
cont->mType = eIntMarginValue;
|
|
SetMiscAtomOrString(&aString);
|
|
return true;
|
|
}
|
|
|
|
bool
|
|
nsAttrValue::ParseStyleAttribute(const nsAString& aString,
|
|
nsIPrincipal* aMaybeScriptedPrincipal,
|
|
nsStyledElement* aElement)
|
|
{
|
|
nsIDocument* ownerDoc = aElement->OwnerDoc();
|
|
nsHTMLCSSStyleSheet* sheet = ownerDoc->GetInlineStyleSheet();
|
|
nsCOMPtr<nsIURI> baseURI = aElement->GetBaseURIForStyleAttr();
|
|
nsIURI* docURI = ownerDoc->GetDocumentURI();
|
|
|
|
NS_ASSERTION(aElement->NodePrincipal() == ownerDoc->NodePrincipal(),
|
|
"This is unexpected");
|
|
|
|
nsCOMPtr<nsIPrincipal> principal = (
|
|
aMaybeScriptedPrincipal ? aMaybeScriptedPrincipal
|
|
: aElement->NodePrincipal());
|
|
|
|
// If the (immutable) document URI does not match the element's base URI
|
|
// (the common case is that they do match) do not cache the rule. This is
|
|
// because the results of the CSS parser are dependent on these URIs, and we
|
|
// do not want to have to account for the URIs in the hash lookup.
|
|
// Similarly, if the triggering principal does not match the node principal,
|
|
// do not cache the rule, since the principal will be encoded in any parsed
|
|
// URLs in the rule.
|
|
bool cachingAllowed = (sheet && baseURI == docURI &&
|
|
principal == aElement->NodePrincipal());
|
|
if (cachingAllowed) {
|
|
MiscContainer* cont = sheet->LookupStyleAttr(aString);
|
|
if (cont) {
|
|
// Set our MiscContainer to the cached one.
|
|
NS_ADDREF(cont);
|
|
SetPtrValueAndType(cont, eOtherBase);
|
|
return true;
|
|
}
|
|
}
|
|
|
|
RefPtr<URLExtraData> data = new URLExtraData(baseURI, docURI,
|
|
principal);
|
|
RefPtr<DeclarationBlock> decl = DeclarationBlock::
|
|
FromCssText(aString, data,
|
|
ownerDoc->GetCompatibilityMode(),
|
|
ownerDoc->CSSLoader());
|
|
if (!decl) {
|
|
return false;
|
|
}
|
|
decl->SetHTMLCSSStyleSheet(sheet);
|
|
SetTo(decl.forget(), &aString);
|
|
|
|
if (cachingAllowed) {
|
|
MiscContainer* cont = GetMiscContainer();
|
|
cont->Cache();
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
void
|
|
nsAttrValue::SetMiscAtomOrString(const nsAString* aValue)
|
|
{
|
|
NS_ASSERTION(GetMiscContainer(), "Must have MiscContainer!");
|
|
NS_ASSERTION(!GetMiscContainer()->mStringBits || IsInServoTraversal(),
|
|
"Trying to re-set atom or string!");
|
|
if (aValue) {
|
|
uint32_t len = aValue->Length();
|
|
// * We're allowing eCSSDeclaration attributes to store empty
|
|
// strings as it can be beneficial to store an empty style
|
|
// attribute as a parsed rule.
|
|
// * We're allowing enumerated values because sometimes the empty
|
|
// string corresponds to a particular enumerated value, especially
|
|
// for enumerated values that are not limited enumerated.
|
|
// Add other types as needed.
|
|
NS_ASSERTION(len || Type() == eCSSDeclaration || Type() == eEnum,
|
|
"Empty string?");
|
|
MiscContainer* cont = GetMiscContainer();
|
|
|
|
if (len <= NS_ATTRVALUE_MAX_STRINGLENGTH_ATOM) {
|
|
nsAtom* atom = MOZ_LIKELY(!IsInServoTraversal())
|
|
? NS_AtomizeMainThread(*aValue).take()
|
|
: NS_Atomize(*aValue).take();
|
|
NS_ENSURE_TRUE_VOID(atom);
|
|
uintptr_t bits = reinterpret_cast<uintptr_t>(atom) | eAtomBase;
|
|
|
|
// In the common case we're not in the servo traversal, and we can just
|
|
// set the bits normally. The parallel case requires more care.
|
|
if (MOZ_LIKELY(!IsInServoTraversal())) {
|
|
cont->SetStringBitsMainThread(bits);
|
|
} else if (!cont->mStringBits.compareExchange(0, bits)) {
|
|
// We raced with somebody else setting the bits. Release our copy.
|
|
atom->Release();
|
|
}
|
|
} else {
|
|
nsStringBuffer* buffer = GetStringBuffer(*aValue).take();
|
|
NS_ENSURE_TRUE_VOID(buffer);
|
|
uintptr_t bits = reinterpret_cast<uintptr_t>(buffer) | eStringBase;
|
|
|
|
// In the common case we're not in the servo traversal, and we can just
|
|
// set the bits normally. The parallel case requires more care.
|
|
if (MOZ_LIKELY(!IsInServoTraversal())) {
|
|
cont->SetStringBitsMainThread(bits);
|
|
} else if (!cont->mStringBits.compareExchange(0, bits)) {
|
|
// We raced with somebody else setting the bits. Release our copy.
|
|
buffer->Release();
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
void
|
|
nsAttrValue::ResetMiscAtomOrString()
|
|
{
|
|
MiscContainer* cont = GetMiscContainer();
|
|
void* ptr = MISC_STR_PTR(cont);
|
|
if (ptr) {
|
|
if (static_cast<ValueBaseType>(cont->mStringBits & NS_ATTRVALUE_BASETYPE_MASK) ==
|
|
eStringBase) {
|
|
static_cast<nsStringBuffer*>(ptr)->Release();
|
|
} else {
|
|
static_cast<nsAtom*>(ptr)->Release();
|
|
}
|
|
cont->SetStringBitsMainThread(0);
|
|
}
|
|
}
|
|
|
|
void
|
|
nsAttrValue::SetSVGType(ValueType aType, const void* aValue,
|
|
const nsAString* aSerialized) {
|
|
MOZ_ASSERT(IsSVGType(aType), "Not an SVG type");
|
|
|
|
MiscContainer* cont = EnsureEmptyMiscContainer();
|
|
// All SVG types are just pointers to classes so just setting any of them
|
|
// will do. We'll lose type-safety but the signature of the calling
|
|
// function should ensure we don't get anything unexpected, and once we
|
|
// stick aValue in a union we lose type information anyway.
|
|
cont->mValue.mSVGAngle = static_cast<const nsSVGAngle*>(aValue);
|
|
cont->mType = aType;
|
|
SetMiscAtomOrString(aSerialized);
|
|
}
|
|
|
|
MiscContainer*
|
|
nsAttrValue::ClearMiscContainer()
|
|
{
|
|
MiscContainer* cont = nullptr;
|
|
if (BaseType() == eOtherBase) {
|
|
cont = GetMiscContainer();
|
|
if (cont->IsRefCounted() && cont->mValue.mRefCount > 1) {
|
|
// This MiscContainer is shared, we need a new one.
|
|
NS_RELEASE(cont);
|
|
|
|
cont = new MiscContainer;
|
|
SetPtrValueAndType(cont, eOtherBase);
|
|
}
|
|
else {
|
|
switch (cont->mType) {
|
|
case eCSSDeclaration:
|
|
{
|
|
MOZ_ASSERT(cont->mValue.mRefCount == 1);
|
|
cont->Release();
|
|
cont->Evict();
|
|
NS_RELEASE(cont->mValue.mCSSDeclaration);
|
|
break;
|
|
}
|
|
case eURL:
|
|
{
|
|
NS_RELEASE(cont->mValue.mURL);
|
|
break;
|
|
}
|
|
case eAtomArray:
|
|
{
|
|
delete cont->mValue.mAtomArray;
|
|
break;
|
|
}
|
|
case eIntMarginValue:
|
|
{
|
|
delete cont->mValue.mIntMargin;
|
|
break;
|
|
}
|
|
default:
|
|
{
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
ResetMiscAtomOrString();
|
|
}
|
|
else {
|
|
ResetIfSet();
|
|
}
|
|
|
|
return cont;
|
|
}
|
|
|
|
MiscContainer*
|
|
nsAttrValue::EnsureEmptyMiscContainer()
|
|
{
|
|
MiscContainer* cont = ClearMiscContainer();
|
|
if (cont) {
|
|
MOZ_ASSERT(BaseType() == eOtherBase);
|
|
ResetMiscAtomOrString();
|
|
cont = GetMiscContainer();
|
|
}
|
|
else {
|
|
cont = new MiscContainer;
|
|
SetPtrValueAndType(cont, eOtherBase);
|
|
}
|
|
|
|
return cont;
|
|
}
|
|
|
|
bool
|
|
nsAttrValue::EnsureEmptyAtomArray()
|
|
{
|
|
if (Type() == eAtomArray) {
|
|
ResetMiscAtomOrString();
|
|
GetAtomArrayValue()->Clear();
|
|
return true;
|
|
}
|
|
|
|
MiscContainer* cont = EnsureEmptyMiscContainer();
|
|
cont->mValue.mAtomArray = new AtomArray;
|
|
cont->mType = eAtomArray;
|
|
|
|
return true;
|
|
}
|
|
|
|
already_AddRefed<nsStringBuffer>
|
|
nsAttrValue::GetStringBuffer(const nsAString& aValue) const
|
|
{
|
|
uint32_t len = aValue.Length();
|
|
if (!len) {
|
|
return nullptr;
|
|
}
|
|
|
|
RefPtr<nsStringBuffer> buf = nsStringBuffer::FromString(aValue);
|
|
if (buf && (buf->StorageSize()/sizeof(char16_t) - 1) == len) {
|
|
return buf.forget();
|
|
}
|
|
|
|
buf = nsStringBuffer::Alloc((len + 1) * sizeof(char16_t));
|
|
if (!buf) {
|
|
return nullptr;
|
|
}
|
|
char16_t *data = static_cast<char16_t*>(buf->Data());
|
|
CopyUnicodeTo(aValue, 0, data, len);
|
|
data[len] = char16_t(0);
|
|
return buf.forget();
|
|
}
|
|
|
|
size_t
|
|
nsAttrValue::SizeOfExcludingThis(MallocSizeOf aMallocSizeOf) const
|
|
{
|
|
size_t n = 0;
|
|
|
|
switch (BaseType()) {
|
|
case eStringBase:
|
|
{
|
|
nsStringBuffer* str = static_cast<nsStringBuffer*>(GetPtr());
|
|
n += str ? str->SizeOfIncludingThisIfUnshared(aMallocSizeOf) : 0;
|
|
break;
|
|
}
|
|
case eOtherBase:
|
|
{
|
|
MiscContainer* container = GetMiscContainer();
|
|
if (!container) {
|
|
break;
|
|
}
|
|
if (container->IsRefCounted() && container->mValue.mRefCount > 1) {
|
|
// We don't report this MiscContainer at all in order to avoid
|
|
// twice-reporting it.
|
|
// TODO DMD, bug 1027551 - figure out how to report this ref-counted
|
|
// object just once.
|
|
break;
|
|
}
|
|
n += aMallocSizeOf(container);
|
|
|
|
void* otherPtr = MISC_STR_PTR(container);
|
|
// We only count the size of the object pointed by otherPtr if it's a
|
|
// string. When it's an atom, it's counted separatly.
|
|
if (otherPtr &&
|
|
static_cast<ValueBaseType>(container->mStringBits & NS_ATTRVALUE_BASETYPE_MASK) == eStringBase) {
|
|
nsStringBuffer* str = static_cast<nsStringBuffer*>(otherPtr);
|
|
n += str ? str->SizeOfIncludingThisIfUnshared(aMallocSizeOf) : 0;
|
|
}
|
|
|
|
if (Type() == eCSSDeclaration && container->mValue.mCSSDeclaration) {
|
|
// TODO: mCSSDeclaration might be owned by another object which
|
|
// would make us count them twice, bug 677493.
|
|
// Bug 1281964: For DeclarationBlock if we do measure we'll
|
|
// need a way to call the Servo heap_size_of function.
|
|
//n += container->mCSSDeclaration->SizeOfIncludingThis(aMallocSizeOf);
|
|
} else if (Type() == eAtomArray && container->mValue.mAtomArray) {
|
|
// Don't measure each nsAtom, they are measured separatly.
|
|
n += container->mValue.mAtomArray->ShallowSizeOfIncludingThis(aMallocSizeOf);
|
|
}
|
|
break;
|
|
}
|
|
case eAtomBase: // Atoms are counted separately.
|
|
case eIntegerBase: // The value is in mBits, nothing to do.
|
|
break;
|
|
}
|
|
|
|
return n;
|
|
}
|