1 : /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
2 : /* ***** BEGIN LICENSE BLOCK *****
3 : * Version: MPL 1.1/GPL 2.0/LGPL 2.1
4 : *
5 : * The contents of this file are subject to the Mozilla Public License Version
6 : * 1.1 (the "License"); you may not use this file except in compliance with
7 : * the License. You may obtain a copy of the License at
8 : * http://www.mozilla.org/MPL/
9 : *
10 : * Software distributed under the License is distributed on an "AS IS" basis,
11 : * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
12 : * for the specific language governing rights and limitations under the
13 : * License.
14 : *
15 : * The Original Code is mozilla.org code.
16 : *
17 : * The Initial Developer of the Original Code is
18 : * Mozilla Foundation.
19 : * Portions created by the Initial Developer are Copyright (C) 2012
20 : * the Initial Developer. All Rights Reserved.
21 : *
22 : * Contributor(s):
23 : * Jeff Muizelaar <jmuizelaar@mozilla.com>
24 : *
25 : * Alternatively, the contents of this file may be used under the terms of
26 : * either the GNU General Public License Version 2 or later (the "GPL"), or
27 : * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
28 : * in which case the provisions of the GPL or the LGPL are applicable instead
29 : * of those above. If you wish to allow use of your version of this file only
30 : * under the terms of either the GPL or the LGPL, and not to allow others to
31 : * use your version of this file under the terms of the MPL, indicate your
32 : * decision by deleting the provisions above and replace them with the notice
33 : * and other provisions required by the GPL or the LGPL. If you do not delete
34 : * the provisions above, a recipient may use your version of this file under
35 : * the terms of any one of the MPL, the GPL or the LGPL.
36 : *
37 : * ***** END LICENSE BLOCK ***** */
38 :
39 : #include "jsapi.h"
40 :
41 : /* this is handy wrapper around JSAPI to make it more pleasant to use.
42 : * We collect the JSAPI errors and so that callers don't need to */
43 : class JSObjectBuilder
44 : {
45 : public:
46 :
47 0 : void DefineProperty(JSObject *aObject, const char *name, JSObject *aValue)
48 : {
49 0 : if (!mOk)
50 0 : return;
51 :
52 0 : mOk = JS_DefineProperty(mCx, aObject, name, OBJECT_TO_JSVAL(aValue), NULL, NULL, JSPROP_ENUMERATE);
53 : }
54 :
55 : void DefineProperty(JSObject *aObject, const char *name, int value)
56 : {
57 : if (!mOk)
58 : return;
59 :
60 : mOk = JS_DefineProperty(mCx, aObject, name, INT_TO_JSVAL(value), NULL, NULL, JSPROP_ENUMERATE);
61 : }
62 :
63 : void DefineProperty(JSObject *aObject, const char *name, double value)
64 : {
65 : if (!mOk)
66 : return;
67 :
68 : mOk = JS_DefineProperty(mCx, aObject, name, DOUBLE_TO_JSVAL(value), NULL, NULL, JSPROP_ENUMERATE);
69 : }
70 :
71 0 : void DefineProperty(JSObject *aObject, const char *name, nsAString &value)
72 : {
73 0 : if (!mOk)
74 0 : return;
75 :
76 0 : const nsString &flat = PromiseFlatString(value);
77 0 : JSString *string = JS_NewUCStringCopyN(mCx, static_cast<const jschar*>(flat.get()), flat.Length());
78 0 : if (!string)
79 0 : mOk = JS_FALSE;
80 :
81 0 : if (!mOk)
82 : return;
83 :
84 0 : mOk = JS_DefineProperty(mCx, aObject, name, STRING_TO_JSVAL(string), NULL, NULL, JSPROP_ENUMERATE);
85 : }
86 :
87 0 : void DefineProperty(JSObject *aObject, const char *name, const char *value)
88 : {
89 0 : nsAutoString string = NS_ConvertASCIItoUTF16(value);
90 0 : DefineProperty(aObject, name, string);
91 0 : }
92 :
93 : void ArrayPush(JSObject *aArray, int value)
94 : {
95 : if (!mOk)
96 : return;
97 :
98 : jsval objval = INT_TO_JSVAL(value);
99 : uint32_t length;
100 : mOk = JS_GetArrayLength(mCx, aArray, &length);
101 :
102 : if (!mOk)
103 : return;
104 :
105 : mOk = JS_SetElement(mCx, aArray, length, &objval);
106 : }
107 :
108 :
109 0 : void ArrayPush(JSObject *aArray, JSObject *aObject)
110 : {
111 0 : if (!mOk)
112 0 : return;
113 :
114 0 : jsval objval = OBJECT_TO_JSVAL(aObject);
115 : uint32_t length;
116 0 : mOk = JS_GetArrayLength(mCx, aArray, &length);
117 :
118 0 : if (!mOk)
119 0 : return;
120 :
121 0 : mOk = JS_SetElement(mCx, aArray, length, &objval);
122 : }
123 :
124 0 : JSObject *CreateArray() {
125 0 : JSObject *array = JS_NewArrayObject(mCx, 0, NULL);
126 0 : if (!array)
127 0 : mOk = JS_FALSE;
128 :
129 0 : return array;
130 : }
131 :
132 0 : JSObject *CreateObject() {
133 0 : JSObject *obj = JS_NewObject(mCx, NULL, NULL, NULL);
134 0 : if (!obj)
135 0 : mOk = JS_FALSE;
136 :
137 0 : return obj;
138 : }
139 :
140 :
141 : // We need to ensure that this object lives on the stack so that GC sees it properly
142 0 : JSObjectBuilder(JSContext *aCx) : mCx(aCx), mOk(JS_TRUE)
143 : {
144 0 : }
145 : private:
146 : JSObjectBuilder(JSObjectBuilder&);
147 :
148 : JSContext *mCx;
149 : JSObject *mObj;
150 : JSBool mOk;
151 : };
152 :
153 :
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