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(VM& vm, Structure* structure, RegExp* regExp)
  34         {
  35             RegExpObject* object = new (NotNull, allocateCell<RegExpObject>(vm.heap)) RegExpObject(vm, structure, regExp);
  36             object->finishCreation(vm);
  37             return object;
  38         }
  39
  40         void setRegExp(VM& vm, RegExp* r) { m_regExp.set(vm, this, r); }
  41         RegExp* regExp() const { return m_regExp.get(); }
  42
  43         void setLastIndex(ExecState* exec, size_t lastIndex)
  44         {
  45             m_lastIndex.setWithoutWriteBarrier(jsNumber(lastIndex));
  46             if (LIKELY(m_lastIndexIsWritable))
  47                 m_lastIndex.setWithoutWriteBarrier(jsNumber(lastIndex));
  48             else
  49                 throwTypeError(exec, StrictModeReadonlyPropertyWriteError);
  50         }
  51         void setLastIndex(ExecState* exec, JSValue lastIndex, bool shouldThrow)
  52         {
  53             if (LIKELY(m_lastIndexIsWritable))
  54                 m_lastIndex.set(exec->vm(), this, lastIndex);
  55             else if (shouldThrow)
  56                 throwTypeError(exec, StrictModeReadonlyPropertyWriteError);
  57         }
  58         JSValue getLastIndex() const
  59         {
  60             return m_lastIndex.get();
  61         }
  62
  63         bool test(ExecState* exec, JSString* string) { return match(exec, string); }
  64         JSValue exec(ExecState*, JSString*);
  65
  66         static bool getOwnPropertySlot(JSObject*, ExecState*, PropertyName, PropertySlot&);
  67         static void put(JSCell*, ExecState*, PropertyName, JSValue, PutPropertySlot&);
  68
  69         DECLARE_EXPORT_INFO;
  70
  71         static Structure* createStructure(VM& vm, JSGlobalObject* globalObject, JSValue prototype)
  72         {
  73             return Structure::create(vm, globalObject, prototype, TypeInfo(ObjectType, StructureFlags), info());
  74         }
  75
  76     protected:
  77         JS_EXPORT_PRIVATE RegExpObject(VM&, Structure*, RegExp*);
  78         JS_EXPORT_PRIVATE void finishCreation(VM&);
  79
  80         static const unsigned StructureFlags = OverridesVisitChildren | OverridesGetOwnPropertySlot | Base::StructureFlags;
  81
  82         static void visitChildren(JSCell*, SlotVisitor&);
  83
  84         JS_EXPORT_PRIVATE static bool deleteProperty(JSCell*, ExecState*, PropertyName);
  85         JS_EXPORT_PRIVATE static void getOwnNonIndexPropertyNames(JSObject*, ExecState*, PropertyNameArray&, EnumerationMode);
  86         JS_EXPORT_PRIVATE static void getPropertyNames(JSObject*, ExecState*, PropertyNameArray&, EnumerationMode);
  87         JS_EXPORT_PRIVATE static bool defineOwnProperty(JSObject*, ExecState*, PropertyName, const PropertyDescriptor&, bool shouldThrow);
  88
  89     private:
  90         MatchResult match(ExecState*, JSString*);
  91
  92         WriteBarrier<RegExp> m_regExp;
  93         WriteBarrier<Unknown> m_lastIndex;
  94         bool m_lastIndexIsWritable;
  95     };
  96
  97     RegExpObject* asRegExpObject(JSValue);
  98
  99     inline RegExpObject* asRegExpObject(JSValue value)
 100     {
 101         ASSERT(asObject(value)->inherits(RegExpObject::info()));
 102         return static_cast<RegExpObject*>(asObject(value));
 103     }
 104
 105 } // namespace JSC
 106
 107 #endif // RegExpObject_h