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5 * modification, are permitted provided that the following conditions
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26 #ifndef SmallStrings_h
27 #define SmallStrings_h
30 #include <wtf/FixedArray.h>
31 #include <wtf/OwnPtr.h>
35 class HeapRootVisitor;
38 class SmallStringsStorage;
41 static const unsigned maxSingleCharacterString = 0xFF;
44 WTF_MAKE_NONCOPYABLE(SmallStrings);
49 JSString* emptyString(JSGlobalData* globalData)
52 createEmptyString(globalData);
56 JSString* singleCharacterString(JSGlobalData* globalData, unsigned char character)
58 if (!m_singleCharacterStrings[character])
59 createSingleCharacterString(globalData, character);
60 return m_singleCharacterStrings[character];
63 StringImpl* singleCharacterStringRep(unsigned char character);
65 void finalizeSmallStrings();
68 unsigned count() const;
70 JSString** singleCharacterStrings() { return &m_singleCharacterStrings[0]; }
73 static const unsigned singleCharacterStringCount = maxSingleCharacterString + 1;
75 void createEmptyString(JSGlobalData*);
76 void createSingleCharacterString(JSGlobalData*, unsigned char);
78 JSString* m_emptyString;
79 JSString* m_singleCharacterStrings[singleCharacterStringCount];
80 OwnPtr<SmallStringsStorage> m_storage;
85 #endif // SmallStrings_h