runtime/NameInstance.h

   1 /*
   2  * Copyright (C) 2012 Apple Inc. All rights reserved.
   3  *
   4  * Redistribution and use in source and binary forms, with or without
   5  * modification, are permitted provided that the following conditions
   6  * are met:
   7  * 1. Redistributions of source code must retain the above copyright
   8  *    notice, this list of conditions and the following disclaimer.
   9  * 2. Redistributions in binary form must reproduce the above copyright
  10  *    notice, this list of conditions and the following disclaimer in the
  11  *    documentation and/or other materials provided with the distribution.
  12  *
  13  * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
  14  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
  15  * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  16  * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
  17  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  18  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  19  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  20  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  21  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  22  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
  23  * THE POSSIBILITY OF SUCH DAMAGE.
  24  */
  25
  26 #ifndef NameInstance_h
  27 #define NameInstance_h
  28
  29 #include "JSDestructibleObject.h"
  30 #include "PrivateName.h"
  31
  32 namespace JSC {
  33
  34 class NameInstance : public JSDestructibleObject {
  35 public:
  36     typedef JSDestructibleObject Base;
  37
  38     DECLARE_INFO;
  39
  40     static Structure* createStructure(VM& vm, JSGlobalObject* globalObject, JSValue prototype)
  41     {
  42         return Structure::create(vm, globalObject, prototype, TypeInfo(NameInstanceType, StructureFlags), info());
  43     }
  44
  45     static NameInstance* create(VM& vm, Structure* structure, JSString* nameString)
  46     {
  47         NameInstance* name = new (NotNull, allocateCell<NameInstance>(vm.heap)) NameInstance(vm, structure, nameString);
  48         name->finishCreation(vm);
  49         return name;
  50     }
  51
  52     const PrivateName& privateName() { return m_privateName; }
  53     JSString* nameString() { return m_nameString.get(); }
  54
  55 protected:
  56     static void destroy(JSCell*);
  57
  58     NameInstance(VM&, Structure*, JSString*);
  59
  60     void finishCreation(VM& vm)
  61     {
  62         Base::finishCreation(vm);
  63         ASSERT(inherits(info()));
  64     }
  65
  66     PrivateName m_privateName;
  67     WriteBarrier<JSString> m_nameString;
  68 };
  69
  70 inline bool isName(JSValue v)
  71 {
  72     return v.isCell() && v.asCell()->type() == NameInstanceType;
  73 }
  74
  75 } // namespace JSC
  76
  77 #endif // NameInstance_h