API/tests/JSNodeList.c

   1 /*
   2  * Copyright (C) 2006 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 "JSNode.h"
  27 #include "JSNodeList.h"
  28 #include "JSObjectRef.h"
  29 #include "JSValueRef.h"
  30 #include "UnusedParam.h"
  31 #include <wtf/Assertions.h>
  32
  33 static JSValueRef JSNodeList_item(JSContextRef context, JSObjectRef object, JSObjectRef thisObject, size_t argumentCount, const JSValueRef arguments[], JSValueRef* exception)
  34 {
  35     UNUSED_PARAM(object);
  36
  37     if (argumentCount > 0) {
  38         NodeList* nodeList = JSObjectGetPrivate(thisObject);
  39         ASSERT(nodeList);
  40         Node* node = NodeList_item(nodeList, (unsigned)JSValueToNumber(context, arguments[0], exception));
  41         if (node)
  42             return JSNode_new(context, node);
  43     }
  44
  45     return JSValueMakeUndefined(context);
  46 }
  47
  48 static JSStaticFunction JSNodeList_staticFunctions[] = {
  49     { "item", JSNodeList_item, kJSPropertyAttributeDontDelete },
  50     { 0, 0, 0 }
  51 };
  52
  53 static JSValueRef JSNodeList_length(JSContextRef context, JSObjectRef thisObject, JSStringRef propertyName, JSValueRef* exception)
  54 {
  55     UNUSED_PARAM(propertyName);
  56     UNUSED_PARAM(exception);
  57
  58     NodeList* nodeList = JSObjectGetPrivate(thisObject);
  59     ASSERT(nodeList);
  60     return JSValueMakeNumber(context, NodeList_length(nodeList));
  61 }
  62
  63 static JSStaticValue JSNodeList_staticValues[] = {
  64     { "length", JSNodeList_length, NULL, kJSPropertyAttributeReadOnly | kJSPropertyAttributeDontDelete },
  65     { 0, 0, 0, 0 }
  66 };
  67
  68 static JSValueRef JSNodeList_getProperty(JSContextRef context, JSObjectRef thisObject, JSStringRef propertyName, JSValueRef* exception)
  69 {
  70     NodeList* nodeList = JSObjectGetPrivate(thisObject);
  71     ASSERT(nodeList);
  72     double index = JSValueToNumber(context, JSValueMakeString(context, propertyName), exception);
  73     unsigned uindex = (unsigned)index;
  74     if (uindex == index) { /* false for NaN */
  75         Node* node = NodeList_item(nodeList, uindex);
  76         if (node)
  77             return JSNode_new(context, node);
  78     }
  79
  80     return NULL;
  81 }
  82
  83 static void JSNodeList_initialize(JSContextRef context, JSObjectRef thisObject)
  84 {
  85     UNUSED_PARAM(context);
  86
  87     NodeList* nodeList = JSObjectGetPrivate(thisObject);
  88     ASSERT(nodeList);
  89
  90     NodeList_ref(nodeList);
  91 }
  92
  93 static void JSNodeList_finalize(JSObjectRef thisObject)
  94 {
  95     NodeList* nodeList = JSObjectGetPrivate(thisObject);
  96     ASSERT(nodeList);
  97
  98     NodeList_deref(nodeList);
  99 }
 100
 101 static JSClassRef JSNodeList_class(JSContextRef context)
 102 {
 103     UNUSED_PARAM(context);
 104
 105     static JSClassRef jsClass;
 106     if (!jsClass) {
 107         JSClassDefinition definition = kJSClassDefinitionEmpty;
 108         definition.staticValues = JSNodeList_staticValues;
 109         definition.staticFunctions = JSNodeList_staticFunctions;
 110         definition.getProperty = JSNodeList_getProperty;
 111         definition.initialize = JSNodeList_initialize;
 112         definition.finalize = JSNodeList_finalize;
 113
 114         jsClass = JSClassCreate(&definition);
 115     }
 116
 117     return jsClass;
 118 }
 119
 120 JSObjectRef JSNodeList_new(JSContextRef context, NodeList* nodeList)
 121 {
 122     return JSObjectMake(context, JSNodeList_class(context), nodeList);
 123 }