runtime/JSGlobalThis.cpp

   1 /*
   2  * Copyright (C) 2011 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 #include "config.h"
  27 #include "JSGlobalThis.h"
  28
  29 #include "JSGlobalObject.h"
  30
  31 namespace JSC {
  32
  33 ASSERT_CLASS_FITS_IN_CELL(JSGlobalThis);
  34 ASSERT_HAS_TRIVIAL_DESTRUCTOR(JSGlobalThis);
  35
  36 const ClassInfo JSGlobalThis::s_info = { "JSGlobalThis", &Base::s_info, 0, 0, CREATE_METHOD_TABLE(JSGlobalThis) };
  37
  38 void JSGlobalThis::visitChildren(JSCell* cell, SlotVisitor& visitor)
  39 {
  40     JSGlobalThis* thisObject = jsCast<JSGlobalThis*>(cell);
  41     ASSERT_GC_OBJECT_INHERITS(thisObject, &s_info);
  42
  43     COMPILE_ASSERT(StructureFlags & OverridesVisitChildren, OverridesVisitChildrenWithoutSettingFlag);
  44     ASSERT(thisObject->structure()->typeInfo().overridesVisitChildren());
  45
  46     Base::visitChildren(thisObject, visitor);
  47     if (thisObject->m_unwrappedObject)
  48         visitor.append(&thisObject->m_unwrappedObject);
  49 }
  50
  51 void JSGlobalThis::setUnwrappedObject(JSGlobalData& globalData, JSGlobalObject* globalObject)
  52 {
  53     ASSERT_ARG(globalObject, globalObject);
  54     m_unwrappedObject.set(globalData, this, globalObject);
  55     setPrototype(globalData, globalObject->prototype());
  56     resetInheritorID();
  57 }
  58
  59 } // namespace JSC