1#ifndef JSDestructibleObject_h
2#define JSDestructibleObject_h
3
4#include "JSObject.h"
5
6namespace JSC {
7
8struct ClassInfo;
9
10class JSDestructibleObject : public JSNonFinalObject {
11public:
12    typedef JSNonFinalObject Base;
13
14    static const bool needsDestruction = true;
15
16    const ClassInfo* classInfo() const { return m_classInfo; }
17
18    static ptrdiff_t classInfoOffset() { return OBJECT_OFFSETOF(JSDestructibleObject, m_classInfo); }
19
20protected:
21    JSDestructibleObject(VM& vm, Structure* structure, Butterfly* butterfly = 0)
22        : JSNonFinalObject(vm, structure, butterfly)
23        , m_classInfo(structure->classInfo())
24    {
25        ASSERT(m_classInfo);
26    }
27
28private:
29    const ClassInfo* m_classInfo;
30};
31
32inline const ClassInfo* JSCell::classInfo() const
33{
34    MarkedBlock* block = MarkedBlock::blockFor(this);
35    if (block->destructorType() == MarkedBlock::Normal)
36        return static_cast<const JSDestructibleObject*>(this)->classInfo();
37    return structure(*block->vm())->classInfo();
38}
39
40} // namespace JSC
41
42#endif
43