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27 #include "core/css/CSSValuePool.h"
29 #include "core/css/parser/BisonCSSParser.h"
30 #include "core/css/CSSValueList.h"
31 #include "core/rendering/style/RenderStyle.h"
35 DEFINE_GC_INFO(CSSValuePool);
37 CSSValuePool& cssValuePool()
40 DEFINE_STATIC_LOCAL(Persistent<CSSValuePool>, pool, (new CSSValuePool()));
43 DEFINE_STATIC_LOCAL(CSSValuePool, pool, ());
45 #endif // ENABLE(OILPAN)
48 CSSValuePool::CSSValuePool()
49 : m_inheritedValue(CSSInheritedValue::create())
50 , m_implicitInitialValue(CSSInitialValue::createImplicit())
51 , m_explicitInitialValue(CSSInitialValue::createExplicit())
52 , m_colorTransparent(CSSPrimitiveValue::createColor(Color::transparent))
53 , m_colorWhite(CSSPrimitiveValue::createColor(Color::white))
54 , m_colorBlack(CSSPrimitiveValue::createColor(Color::black))
56 m_identifierValueCache.resize(numCSSValueKeywords);
57 m_pixelValueCache.resize(maximumCacheableIntegerValue + 1);
58 m_percentValueCache.resize(maximumCacheableIntegerValue + 1);
59 m_numberValueCache.resize(maximumCacheableIntegerValue + 1);
62 PassRefPtrWillBeRawPtr<CSSPrimitiveValue> CSSValuePool::createIdentifierValue(CSSValueID ident)
65 return CSSPrimitiveValue::createIdentifier(ident);
67 if (!m_identifierValueCache[ident])
68 m_identifierValueCache[ident] = CSSPrimitiveValue::createIdentifier(ident);
69 return m_identifierValueCache[ident];
72 PassRefPtrWillBeRawPtr<CSSPrimitiveValue> CSSValuePool::createIdentifierValue(CSSPropertyID ident)
74 return CSSPrimitiveValue::createIdentifier(ident);
77 PassRefPtrWillBeRawPtr<CSSPrimitiveValue> CSSValuePool::createColorValue(unsigned rgbValue)
79 // These are the empty and deleted values of the hash table.
80 if (rgbValue == Color::transparent)
81 return m_colorTransparent;
82 if (rgbValue == Color::white)
84 // Just because it is common.
85 if (rgbValue == Color::black)
88 // Just wipe out the cache and start rebuilding if it gets too big.
89 const unsigned maximumColorCacheSize = 512;
90 if (m_colorValueCache.size() > maximumColorCacheSize)
91 m_colorValueCache.clear();
93 RefPtrWillBeRawPtr<CSSPrimitiveValue> dummyValue;
94 ColorValueCache::AddResult entry = m_colorValueCache.add(rgbValue, dummyValue);
96 entry.storedValue->value = CSSPrimitiveValue::createColor(rgbValue);
97 return entry.storedValue->value;
100 PassRefPtrWillBeRawPtr<CSSPrimitiveValue> CSSValuePool::createValue(double value, CSSPrimitiveValue::UnitTypes type)
102 if (value < 0 || value > maximumCacheableIntegerValue)
103 return CSSPrimitiveValue::create(value, type);
105 int intValue = static_cast<int>(value);
106 if (value != intValue)
107 return CSSPrimitiveValue::create(value, type);
110 case CSSPrimitiveValue::CSS_PX:
111 if (!m_pixelValueCache[intValue])
112 m_pixelValueCache[intValue] = CSSPrimitiveValue::create(value, type);
113 return m_pixelValueCache[intValue];
114 case CSSPrimitiveValue::CSS_PERCENTAGE:
115 if (!m_percentValueCache[intValue])
116 m_percentValueCache[intValue] = CSSPrimitiveValue::create(value, type);
117 return m_percentValueCache[intValue];
118 case CSSPrimitiveValue::CSS_NUMBER:
119 if (!m_numberValueCache[intValue])
120 m_numberValueCache[intValue] = CSSPrimitiveValue::create(value, type);
121 return m_numberValueCache[intValue];
123 return CSSPrimitiveValue::create(value, type);
127 PassRefPtrWillBeRawPtr<CSSPrimitiveValue> CSSValuePool::createValue(const Length& value, const RenderStyle& style)
129 return CSSPrimitiveValue::create(value, style.effectiveZoom());
132 PassRefPtrWillBeRawPtr<CSSPrimitiveValue> CSSValuePool::createFontFamilyValue(const String& familyName)
134 RefPtrWillBeMember<CSSPrimitiveValue>& value = m_fontFamilyValueCache.add(familyName, 0).storedValue->value;
136 value = CSSPrimitiveValue::create(familyName, CSSPrimitiveValue::CSS_STRING);
140 PassRefPtrWillBeRawPtr<CSSValueList> CSSValuePool::createFontFaceValue(const AtomicString& string)
142 // Just wipe out the cache and start rebuilding if it gets too big.
143 const unsigned maximumFontFaceCacheSize = 128;
144 if (m_fontFaceValueCache.size() > maximumFontFaceCacheSize)
145 m_fontFaceValueCache.clear();
147 RefPtrWillBeMember<CSSValueList>& value = m_fontFaceValueCache.add(string, 0).storedValue->value;
149 value = BisonCSSParser::parseFontFaceValue(string);
153 void CSSValuePool::trace(Visitor* visitor)
155 visitor->trace(m_inheritedValue);
156 visitor->trace(m_implicitInitialValue);
157 visitor->trace(m_explicitInitialValue);
158 visitor->trace(m_identifierValueCache);
159 visitor->trace(m_colorValueCache);
160 visitor->trace(m_colorTransparent);
161 visitor->trace(m_colorWhite);
162 visitor->trace(m_colorBlack);
163 visitor->trace(m_pixelValueCache);
164 visitor->trace(m_percentValueCache);
165 visitor->trace(m_numberValueCache);
166 visitor->trace(m_fontFaceValueCache);
167 visitor->trace(m_fontFamilyValueCache);