bindings/runtime_array.cpp

   1 /*
   2  * Copyright (C) 2003 Apple Computer, 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 COMPUTER, INC. ``AS IS'' AND ANY
  14  * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  15  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  16  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE COMPUTER, INC. OR
  17  * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
  18  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
  19  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
  20  * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
  21  * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  22  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  23  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  24  */
  25
  26 #include "config.h"
  27 #include "runtime_array.h"
  28
  29 #include "JSGlobalObject.h"
  30 #include "array_object.h"
  31
  32 using namespace KJS;
  33
  34 const ClassInfo RuntimeArray::info = { "RuntimeArray", &ArrayInstance::info, 0 };
  35
  36 RuntimeArray::RuntimeArray(ExecState *exec, Bindings::Array *a)
  37     : JSObject(exec->lexicalGlobalObject()->arrayPrototype())
  38     , _array(a)
  39 {
  40 }
  41
  42 JSValue *RuntimeArray::lengthGetter(ExecState*, JSObject*, const Identifier&, const PropertySlot& slot)
  43 {
  44     RuntimeArray *thisObj = static_cast<RuntimeArray *>(slot.slotBase());
  45     return jsNumber(thisObj->getLength());
  46 }
  47
  48 JSValue *RuntimeArray::indexGetter(ExecState* exec, JSObject*, const Identifier&, const PropertySlot& slot)
  49 {
  50     RuntimeArray *thisObj = static_cast<RuntimeArray *>(slot.slotBase());
  51     return thisObj->getConcreteArray()->valueAt(exec, slot.index());
  52 }
  53
  54 bool RuntimeArray::getOwnPropertySlot(ExecState* exec, const Identifier& propertyName, PropertySlot& slot)
  55 {
  56     if (propertyName == exec->propertyNames().length) {
  57         slot.setCustom(this, lengthGetter);
  58         return true;
  59     }
  60
  61     bool ok;
  62     unsigned index = propertyName.toArrayIndex(&ok);
  63     if (ok) {
  64         if (index < getLength()) {
  65             slot.setCustomIndex(this, index, indexGetter);
  66             return true;
  67         }
  68     }
  69
  70     return JSObject::getOwnPropertySlot(exec, propertyName, slot);
  71 }
  72
  73 bool RuntimeArray::getOwnPropertySlot(ExecState *exec, unsigned index, PropertySlot& slot)
  74 {
  75     if (index < getLength()) {
  76         slot.setCustomIndex(this, index, indexGetter);
  77         return true;
  78     }
  79
  80     return JSObject::getOwnPropertySlot(exec, index, slot);
  81 }
  82
  83 void RuntimeArray::put(ExecState* exec, const Identifier& propertyName, JSValue* value, int attr)
  84 {
  85     if (propertyName == exec->propertyNames().length) {
  86         throwError(exec, RangeError);
  87         return;
  88     }
  89
  90     bool ok;
  91     unsigned index = propertyName.toArrayIndex(&ok);
  92     if (ok) {
  93         getConcreteArray()->setValueAt(exec, index, value);
  94         return;
  95     }
  96
  97     JSObject::put(exec, propertyName, value, attr);
  98 }
  99
 100 void RuntimeArray::put(ExecState* exec, unsigned index, JSValue* value, int)
 101 {
 102     if (index >= getLength()) {
 103         throwError(exec, RangeError);
 104         return;
 105     }
 106
 107     getConcreteArray()->setValueAt(exec, index, value);
 108 }
 109
 110 bool RuntimeArray::deleteProperty(ExecState*, const Identifier&)
 111 {
 112     return false;
 113 }
 114
 115 bool RuntimeArray::deleteProperty(ExecState*, unsigned)
 116 {
 117     return false;
 118 }