runtime/RegExpObject.h

   1 /*
   2  *  Copyright (C) 1999-2000 Harri Porten (porten@kde.org)
   3  *  Copyright (C) 2003, 2007, 2008, 2012 Apple Inc. All Rights Reserved.
   4  *
   5  *  This library is free software; you can redistribute it and/or
   6  *  modify it under the terms of the GNU Lesser General Public
   7  *  License as published by the Free Software Foundation; either
   8  *  version 2 of the License, or (at your option) any later version.
   9  *
  10  *  This library is distributed in the hope that it will be useful,
  11  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13  *  Lesser General Public License for more details.
  14  *
  15  *  You should have received a copy of the GNU Lesser General Public
  16  *  License along with this library; if not, write to the Free Software
  17  *  Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
  18  *
  19  */
  20
  21 #ifndef RegExpObject_h
  22 #define RegExpObject_h
  23
  24 #include "JSObject.h"
  25 #include "RegExp.h"
  26
  27 namespace JSC {
  28
  29     class RegExpObject : public JSNonFinalObject {
  30     public:
  31         typedef JSNonFinalObject Base;
  32
  33         static RegExpObject* create(ExecState* exec, JSGlobalObject* globalObject, Structure* structure, RegExp* regExp)
  34         {
  35             RegExpObject* object = new (NotNull, allocateCell<RegExpObject>(*exec->heap())) RegExpObject(globalObject, structure, regExp);
  36             object->finishCreation(globalObject);
  37             return object;
  38         }
  39
  40         static RegExpObject* create(JSGlobalData& globalData, JSGlobalObject* globalObject, Structure* structure, RegExp* regExp)
  41         {
  42             RegExpObject* object = new (NotNull, allocateCell<RegExpObject>(globalData.heap)) RegExpObject(globalObject, structure, regExp);
  43             object->finishCreation(globalObject);
  44             return object;
  45         }
  46
  47         void setRegExp(JSGlobalData& globalData, RegExp* r) { m_regExp.set(globalData, this, r); }
  48         RegExp* regExp() const { return m_regExp.get(); }
  49
  50         void setLastIndex(ExecState* exec, size_t lastIndex)
  51         {
  52             m_lastIndex.setWithoutWriteBarrier(jsNumber(lastIndex));
  53             if (LIKELY(m_lastIndexIsWritable))
  54                 m_lastIndex.setWithoutWriteBarrier(jsNumber(lastIndex));
  55             else
  56                 throwTypeError(exec, StrictModeReadonlyPropertyWriteError);
  57         }
  58         void setLastIndex(ExecState* exec, JSValue lastIndex, bool shouldThrow)
  59         {
  60             if (LIKELY(m_lastIndexIsWritable))
  61                 m_lastIndex.set(exec->globalData(), this, lastIndex);
  62             else if (shouldThrow)
  63                 throwTypeError(exec, StrictModeReadonlyPropertyWriteError);
  64         }
  65         JSValue getLastIndex() const
  66         {
  67             return m_lastIndex.get();
  68         }
  69
  70         bool test(ExecState* exec, JSString* string) { return match(exec, string); }
  71         JSValue exec(ExecState*, JSString*);
  72
  73         static bool getOwnPropertySlot(JSCell*, ExecState*, const Identifier& propertyName, PropertySlot&);
  74         static bool getOwnPropertyDescriptor(JSObject*, ExecState*, const Identifier&, PropertyDescriptor&);
  75         static void put(JSCell*, ExecState*, const Identifier& propertyName, JSValue, PutPropertySlot&);
  76
  77         static JS_EXPORTDATA const ClassInfo s_info;
  78
  79         static Structure* createStructure(JSGlobalData& globalData, JSGlobalObject* globalObject, JSValue prototype)
  80         {
  81             return Structure::create(globalData, globalObject, prototype, TypeInfo(ObjectType, StructureFlags), &s_info);
  82         }
  83
  84     protected:
  85         JS_EXPORT_PRIVATE RegExpObject(JSGlobalObject*, Structure*, RegExp*);
  86         JS_EXPORT_PRIVATE void finishCreation(JSGlobalObject*);
  87
  88         static const unsigned StructureFlags = OverridesVisitChildren | OverridesGetOwnPropertySlot | Base::StructureFlags;
  89
  90         static void visitChildren(JSCell*, SlotVisitor&);
  91
  92         JS_EXPORT_PRIVATE static bool deleteProperty(JSCell*, ExecState*, const Identifier& propertyName);
  93         JS_EXPORT_PRIVATE static void getOwnPropertyNames(JSObject*, ExecState*, PropertyNameArray&, EnumerationMode);
  94         JS_EXPORT_PRIVATE static void getPropertyNames(JSObject*, ExecState*, PropertyNameArray&, EnumerationMode);
  95         JS_EXPORT_PRIVATE static bool defineOwnProperty(JSObject*, ExecState*, const Identifier& propertyName, PropertyDescriptor&, bool shouldThrow);
  96
  97     private:
  98         MatchResult match(ExecState*, JSString*);
  99
 100         WriteBarrier<RegExp> m_regExp;
 101         WriteBarrier<Unknown> m_lastIndex;
 102         bool m_lastIndexIsWritable;
 103     };
 104
 105     RegExpObject* asRegExpObject(JSValue);
 106
 107     inline RegExpObject* asRegExpObject(JSValue value)
 108     {
 109         ASSERT(asObject(value)->inherits(&RegExpObject::s_info));
 110         return static_cast<RegExpObject*>(asObject(value));
 111     }
 112
 113 } // namespace JSC
 114
 115 #endif // RegExpObject_h