extensions/DictionaryGlue.h

   1 /* -*- Mode: C++; c-basic-offset: 4; indent-tabs-mode: nil; tab-width: 4 -*- */
   2 /* vi: set ts=4 sw=4 expandtab: (add to ~/.vimrc: set modeline modelines=5) */
   3 /* ***** BEGIN LICENSE BLOCK *****
   4  * Version: MPL 1.1/GPL 2.0/LGPL 2.1
   5  *
   6  * The contents of this file are subject to the Mozilla Public License Version
   7  * 1.1 (the "License"); you may not use this file except in compliance with
   8  * the License. You may obtain a copy of the License at
   9  * http://www.mozilla.org/MPL/
  10  *
  11  * Software distributed under the License is distributed on an "AS IS" basis,
  12  * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
  13  * for the specific language governing rights and limitations under the
  14  * License.
  15  *
  16  * The Original Code is [Open Source Virtual Machine.].
  17  *
  18  * The Initial Developer of the Original Code is
  19  * Adobe System Incorporated.
  20  * Portions created by the Initial Developer are Copyright (C) 1993-2006
  21  * the Initial Developer. All Rights Reserved.
  22  *
  23  * Contributor(s):
  24  *   Adobe AS3 Team
  25  *
  26  * Alternatively, the contents of this file may be used under the terms of
  27  * either the GNU General Public License Version 2 or later (the "GPL"), or
  28  * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
  29  * in which case the provisions of the GPL or the LGPL are applicable instead
  30  * of those above. If you wish to allow use of your version of this file only
  31  * under the terms of either the GPL or the LGPL, and not to allow others to
  32  * use your version of this file under the terms of the MPL, indicate your
  33  * decision by deleting the provisions above and replace them with the notice
  34  * and other provisions required by the GPL or the LGPL. If you do not delete
  35  * the provisions above, a recipient may use your version of this file under
  36  * the terms of any one of the MPL, the GPL or the LGPL.
  37  *
  38  * ***** END LICENSE BLOCK ***** */
  39
  40
  41 #ifndef DICTIONARYGLUE_INCLUDED
  42 #define DICTIONARYGLUE_INCLUDED
  43
  44 namespace avmplus
  45 {
  46     class GC_AS3_EXACT_WITH_HOOK(DictionaryObject, ScriptObject)
  47     {
  48     protected:
  49         DictionaryObject(VTable *vtable, ScriptObject *delegate);
  50
  51     public:
  52         REALLY_INLINE static DictionaryObject* create(MMgc::GC* gc, VTable* ivtable, ScriptObject* delegate)
  53         {
  54             return new (gc, ivtable->getExtraSize()) DictionaryObject(ivtable, delegate);
  55         }
  56
  57         void init(bool weakKeys);
  58
  59         // multiname and Stringp forms fall through to ScriptObject
  60         virtual Atom getAtomProperty(Atom name) const;
  61         virtual bool hasAtomProperty(Atom name) const;
  62         virtual bool deleteAtomProperty(Atom name);
  63         virtual void setAtomProperty(Atom name, Atom value);
  64
  65         virtual Atom nextName(int index);
  66         virtual Atom nextValue(int index);
  67         virtual int nextNameIndex(int index);
  68
  69         bool isUsingWeakKeys() const { return getHeapHashtable()->weakKeys(); }
  70
  71     private:
  72
  73         REALLY_INLINE void gcTraceHook_DictionaryObject(MMgc::GC *gc)
  74         {
  75             // This code was ripped out of ScriptObject::getTableNoInit
  76             union {
  77                 uint8_t* p;
  78                 HeapHashtable** hht;
  79             };
  80             p = (uint8_t*)this + vtable->traits->getHashtableOffset();
  81             gc->TraceLocation(hht);
  82         }
  83
  84         inline HeapHashtable* getHeapHashtable() const
  85         {
  86             // uintptr_t (rather than char*) to avoid "increases required alignment" warning
  87             return *(HeapHashtable**)(uintptr_t(this) + vtable->traits->getHashtableOffset());
  88         }
  89
  90         Atom FASTCALL getKeyFromObject(Atom object) const;
  91
  92     // ------------------------ DATA SECTION BEGIN
  93         GC_NO_DATA(DictionaryObject)
  94
  95     private:
  96         DECLARE_SLOTS_DictionaryObject;
  97     // ------------------------ DATA SECTION END
  98     };
  99
 100     class GC_AS3_EXACT(DictionaryClass, ClassClosure)
 101     {
 102     private:
 103         DictionaryClass(VTable *vtable);
 104     public:
 105         REALLY_INLINE static DictionaryClass* create(MMgc::GC* gc, VTable* cvtable)
 106         {
 107             return new (gc, cvtable->getExtraSize()) DictionaryClass(cvtable);
 108         }
 109
 110     // ------------------------ DATA SECTION BEGIN
 111         GC_NO_DATA(DictionaryClass)
 112
 113     private:
 114         DECLARE_SLOTS_DictionaryClass;
 115     // ------------------------ DATA SECTION END
 116     };
 117 }
 118
 119 #endif /* DICTIONARYGLUE_INCLUDED */