1 /*
2 Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies)
3
4 This library is free software; you can redistribute it and/or
5 modify it under the terms of the GNU Library General Public
6 License as published by the Free Software Foundation; either
7 version 2 of the License, or (at your option) any later version.
8
9 This library is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 Library General Public License for more details.
13
14 You should have received a copy of the GNU Library General Public License
15 along with this library; see the file COPYING.LIB. If not, write to
16 the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
17 Boston, MA 02110-1301, USA.
18 */
19
20 // Contains the necessary helper structures to make possible expose
21 // C/C++ functions to JavaScript environment.
22
23 #include "config.h"
24
25 #include "qscriptfunction_p.h"
26
qt_NativeFunction_finalize(JSObjectRef object)27 static void qt_NativeFunction_finalize(JSObjectRef object)
28 {
29 void* priv = JSObjectGetPrivate(object);
30 delete reinterpret_cast<QNativeFunctionData*>(priv);
31 }
32
qt_NativeFunction_callAsFunction(JSContextRef context,JSObjectRef object,JSObjectRef thisObject,size_t argumentCount,const JSValueRef arguments[],JSValueRef * exception)33 static JSValueRef qt_NativeFunction_callAsFunction(JSContextRef context, JSObjectRef object, JSObjectRef thisObject, size_t argumentCount, const JSValueRef arguments[], JSValueRef* exception)
34 {
35 QNativeFunctionData* data = reinterpret_cast<QNativeFunctionData*>(JSObjectGetPrivate(object));
36
37 // TODO: build a QScriptContext and use it in the native call.
38 QScriptContext* scriptContext = 0;
39 Q_UNUSED(context);
40 Q_UNUSED(thisObject);
41 Q_UNUSED(argumentCount);
42 Q_UNUSED(arguments);
43 Q_UNUSED(exception);
44
45 QScriptEnginePrivate* engine = data->engine;
46 QScriptValuePrivate* result = QScriptValuePrivate::get(data->fun(scriptContext, QScriptEnginePrivate::get(engine)));
47 if (!result->isValid()) {
48 qWarning("Invalid value returned from native function, returning undefined value instead.");
49 return engine->makeJSValue(QScriptValue::UndefinedValue);
50 }
51
52 // Make sure that the result will be assigned to the correct engine.
53 if (!result->engine()) {
54 Q_ASSERT(result->isValid());
55 result->assignEngine(engine);
56 } else if (result->engine() != engine) {
57 qWarning("Value from different engine returned from native function, returning undefined value instead.");
58 return engine->makeJSValue(QScriptValue::UndefinedValue);
59 }
60
61 return *result;
62 }
63
64 JSClassDefinition qt_NativeFunctionClass = {
65 0, // version
66 kJSClassAttributeNoAutomaticPrototype, // attributes
67
68 "", // className
69 0, // parentClass
70
71 0, // staticValues
72 0, // staticFunctions
73
74 0, // initialize
75 qt_NativeFunction_finalize, // finalize
76 0, // hasProperty
77 0, // getProperty
78 0, // setProperty
79 0, // deleteProperty
80 0, // getPropertyNames
81 qt_NativeFunction_callAsFunction, // callAsFunction
82 0, // callAsConstructor
83 0, // hasInstance
84 0 // convertToType
85 };
86
qt_NativeFunctionWithArg_finalize(JSObjectRef object)87 static void qt_NativeFunctionWithArg_finalize(JSObjectRef object)
88 {
89 void* priv = JSObjectGetPrivate(object);
90 delete reinterpret_cast<QNativeFunctionWithArgData*>(priv);
91 }
92
qt_NativeFunctionWithArg_callAsFunction(JSContextRef context,JSObjectRef object,JSObjectRef thisObject,size_t argumentCount,const JSValueRef arguments[],JSValueRef * exception)93 static JSValueRef qt_NativeFunctionWithArg_callAsFunction(JSContextRef context, JSObjectRef object, JSObjectRef thisObject, size_t argumentCount, const JSValueRef arguments[], JSValueRef* exception)
94 {
95 QNativeFunctionWithArgData* data = reinterpret_cast<QNativeFunctionWithArgData*>(JSObjectGetPrivate(object));
96
97 // TODO: build a QScriptContext and use it in the native call.
98 QScriptContext* scriptContext = 0;
99 Q_UNUSED(context);
100 Q_UNUSED(thisObject);
101 Q_UNUSED(argumentCount);
102 Q_UNUSED(arguments);
103 Q_UNUSED(exception);
104
105 QScriptEnginePrivate* engine = data->engine;
106 QScriptValuePrivate* result = QScriptValuePrivate::get(data->fun(scriptContext, QScriptEnginePrivate::get(engine), data->arg));
107 if (!result->isValid()) {
108 qWarning("Invalid value returned from native function, returning undefined value instead.");
109 return engine->makeJSValue(QScriptValue::UndefinedValue);
110 }
111
112 // Make sure that the result will be assigned to the correct engine.
113 if (!result->engine()) {
114 Q_ASSERT(result->isValid());
115 result->assignEngine(engine);
116 } else if (result->engine() != engine) {
117 qWarning("Value from different engine returned from native function, returning undefined value instead.");
118 return engine->makeJSValue(QScriptValue::UndefinedValue);
119 }
120
121 return *result;
122 }
123
124 JSClassDefinition qt_NativeFunctionWithArgClass = {
125 0, // version
126 kJSClassAttributeNoAutomaticPrototype, // attributes
127
128 "", // className
129 0, // parentClass
130
131 0, // staticValues
132 0, // staticFunctions
133
134 0, // initialize
135 qt_NativeFunctionWithArg_finalize, // finalize
136 0, // hasProperty
137 0, // getProperty
138 0, // setProperty
139 0, // deleteProperty
140 0, // getPropertyNames
141 qt_NativeFunctionWithArg_callAsFunction, // callAsFunction
142 0, // callAsConstructor
143 0, // hasInstance
144 0 // convertToType
145 };
146