1 /*
2 * Copyright (C) 2004 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
28 #if ENABLE(NETSCAPE_PLUGIN_API)
29
30 #include "c_runtime.h"
31
32 #include "c_instance.h"
33 #include "c_utility.h"
34 #include "npruntime_impl.h"
35 #ifdef ANDROID_NPN_SETEXCEPTION
36 #include "runtime/Error.h"
37 #endif // ANDROID_NPN_SETEXCEPTION
38 #include <runtime/JSLock.h>
39
40 namespace JSC {
41 namespace Bindings {
42
43 #ifdef ANDROID_NPN_SETEXCEPTION
44 /*
45 * When throwing an exception, we need to use the current ExecState.
46 * The following two methods implement a similar solution to the
47 * Objective-C implementation, where _NPN_SetException set a global
48 * exception (using SetGlobalException).
49 * We then test (using MoveGlobalExceptionToExecState) if the exception
50 * is set, after each javascript call that might result in an exception.
51 * If the exception is set we throw it with the passed ExecState.
52 */
53
54 static UString* globalLastException = 0;
55
SetGlobalException(const NPUTF8 * exception)56 void SetGlobalException(const NPUTF8* exception)
57 {
58 if (globalLastException != 0) {
59 delete globalLastException;
60 globalLastException = 0;
61 }
62 if (exception != 0)
63 globalLastException = new UString(exception);
64 }
65
MoveGlobalExceptionToExecState(ExecState * exec)66 void MoveGlobalExceptionToExecState(ExecState* exec)
67 {
68 if (!globalLastException)
69 return;
70 JSLock lock(exec);
71 throwError(exec, GeneralError, *globalLastException);
72 SetGlobalException(0);
73 }
74 #endif // ANDROID_NPN_SETEXCEPTION
75
valueFromInstance(ExecState * exec,const Instance * inst) const76 JSValue CField::valueFromInstance(ExecState* exec, const Instance* inst) const
77 {
78 const CInstance* instance = static_cast<const CInstance*>(inst);
79 NPObject* obj = instance->getObject();
80 if (obj->_class->getProperty) {
81 NPVariant property;
82 VOID_TO_NPVARIANT(property);
83
84 #ifdef ANDROID_NPN_SETEXCEPTION
85 SetGlobalException(0);
86 #endif // ANDROID_NPN_SETEXCEPTION
87 bool result;
88 {
89 JSLock::DropAllLocks dropAllLocks(SilenceAssertionsOnly);
90 result = obj->_class->getProperty(obj, _fieldIdentifier, &property);
91 }
92 #ifdef ANDROID_NPN_SETEXCEPTION
93 MoveGlobalExceptionToExecState(exec);
94 #endif // ANDROID_NPN_SETEXCEPTION
95 if (result) {
96 JSValue result = convertNPVariantToValue(exec, &property, instance->rootObject());
97 _NPN_ReleaseVariantValue(&property);
98 return result;
99 }
100 }
101 return jsUndefined();
102 }
103
setValueToInstance(ExecState * exec,const Instance * inst,JSValue aValue) const104 void CField::setValueToInstance(ExecState *exec, const Instance *inst, JSValue aValue) const
105 {
106 const CInstance* instance = static_cast<const CInstance*>(inst);
107 NPObject* obj = instance->getObject();
108 if (obj->_class->setProperty) {
109 NPVariant variant;
110 convertValueToNPVariant(exec, aValue, &variant);
111
112 #ifdef ANDROID_NPN_SETEXCEPTION
113 SetGlobalException(0);
114 #endif // ANDROID_NPN_SETEXCEPTION
115 {
116 JSLock::DropAllLocks dropAllLocks(SilenceAssertionsOnly);
117 obj->_class->setProperty(obj, _fieldIdentifier, &variant);
118 }
119
120 _NPN_ReleaseVariantValue(&variant);
121 #ifdef ANDROID_NPN_SETEXCEPTION
122 MoveGlobalExceptionToExecState(exec);
123 #endif // ANDROID_NPN_SETEXCEPTION
124 }
125 }
126
127 } }
128
129 #endif // ENABLE(NETSCAPE_PLUGIN_API)
130