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/*
* Copyright (C) 2011, 2012 Apple Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
* THE POSSIBILITY OF SUCH DAMAGE.
*/
#pragma once
#include "CSSColorValue.h"
#include "CSSPrimitiveValue.h"
#include "ColorHash.h"
#include <wtf/HashMap.h>
#include <wtf/NeverDestroyed.h>
#include <wtf/text/AtomStringHash.h>
namespace WebCore {
class CSSValueList;
class CSSValuePool;
class StaticCSSValuePool {
friend class CSSPrimitiveValue;
friend class CSSValuePool;
friend class LazyNeverDestroyed<StaticCSSValuePool>;
public:
static void init();
private:
StaticCSSValuePool();
LazyNeverDestroyed<CSSPrimitiveValue> m_implicitInitialValue;
LazyNeverDestroyed<CSSColorValue> m_transparentColor;
LazyNeverDestroyed<CSSColorValue> m_whiteColor;
LazyNeverDestroyed<CSSColorValue> m_blackColor;
static constexpr int maximumCacheableIntegerValue = 255;
std::array<LazyNeverDestroyed<CSSPrimitiveValue>, maximumCacheableIntegerValue + 1> m_pixelValues;
std::array<LazyNeverDestroyed<CSSPrimitiveValue>, maximumCacheableIntegerValue + 1> m_percentageValues;
std::array<LazyNeverDestroyed<CSSPrimitiveValue>, maximumCacheableIntegerValue + 1> m_numberValues;
std::array<LazyNeverDestroyed<CSSPrimitiveValue>, numCSSValueKeywords> m_identifierValues;
};
WEBCORE_EXPORT extern LazyNeverDestroyed<StaticCSSValuePool> staticCSSValuePool;
DECLARE_ALLOCATOR_WITH_HEAP_IDENTIFIER(CSSValuePool);
class CSSValuePool {
WTF_MAKE_FAST_ALLOCATED_WITH_HEAP_IDENTIFIER(CSSValuePool);
WTF_MAKE_NONCOPYABLE(CSSValuePool);
public:
CSSValuePool();
static CSSValuePool& singleton();
void drain();
Ref<CSSColorValue> createColorValue(const WebCore::Color&);
RefPtr<CSSValueList> createFontFaceValue(const AtomString&);
Ref<CSSPrimitiveValue> createFontFamilyValue(const AtomString&);
private:
UncheckedKeyHashMap<WebCore::Color, Ref<CSSColorValue>> m_colorValueCache;
UncheckedKeyHashMap<AtomString, RefPtr<CSSValueList>> m_fontFaceValueCache;
UncheckedKeyHashMap<AtomString, Ref<CSSPrimitiveValue>> m_fontFamilyValueCache;
};
inline CSSPrimitiveValue& CSSPrimitiveValue::implicitInitialValue()
{
return staticCSSValuePool->m_implicitInitialValue.get();
}
inline Ref<CSSPrimitiveValue> CSSPrimitiveValue::create(CSSValueID identifier)
{
RELEASE_ASSERT(identifier < numCSSValueKeywords);
return staticCSSValuePool->m_identifierValues[identifier].get();
}
} // namespace WebCore
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