1/*
2 * Copyright (C) 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010 Apple 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 "JavaClassJSC.h"
28
29#if ENABLE(JAVA_BRIDGE)
30
31#include "JSDOMWindow.h"
32#include "JavaFieldJSC.h"
33#include "JavaMethodJobject.h"
34#include <runtime/Identifier.h>
35#include <runtime/JSLock.h>
36
37using namespace JSC::Bindings;
38
39JavaClass::JavaClass(jobject anInstance)
40{
41    jobject aClass = callJNIMethod<jobject>(anInstance, "getClass", "()Ljava/lang/Class;");
42
43    if (!aClass) {
44        LOG_ERROR("Unable to call getClass on instance %p", anInstance);
45        m_name = fastStrDup("<Unknown>");
46        return;
47    }
48
49    if (jstring className = (jstring)callJNIMethod<jobject>(aClass, "getName", "()Ljava/lang/String;")) {
50        const char* classNameC = getCharactersFromJString(className);
51        m_name = fastStrDup(classNameC);
52        releaseCharactersForJString(className, classNameC);
53    } else
54        m_name = fastStrDup("<Unknown>");
55
56    int i;
57    JNIEnv* env = getJNIEnv();
58
59    // Get the fields
60    if (jarray fields = (jarray)callJNIMethod<jobject>(aClass, "getFields", "()[Ljava/lang/reflect/Field;")) {
61        int numFields = env->GetArrayLength(fields);
62        for (i = 0; i < numFields; i++) {
63            jobject aJField = env->GetObjectArrayElement((jobjectArray)fields, i);
64            JavaField* aField = new JavaField(env, aJField); // deleted in the JavaClass destructor
65            {
66                JSLock lock(SilenceAssertionsOnly);
67                m_fields.set(aField->name().impl(), aField);
68            }
69            env->DeleteLocalRef(aJField);
70        }
71        env->DeleteLocalRef(fields);
72    }
73
74    // Get the methods
75    if (jarray methods = (jarray)callJNIMethod<jobject>(aClass, "getMethods", "()[Ljava/lang/reflect/Method;")) {
76        int numMethods = env->GetArrayLength(methods);
77        for (i = 0; i < numMethods; i++) {
78            jobject aJMethod = env->GetObjectArrayElement((jobjectArray)methods, i);
79            JavaMethod* aMethod = new JavaMethodJobject(env, aJMethod); // deleted in the JavaClass destructor
80            MethodList* methodList;
81            {
82                JSLock lock(SilenceAssertionsOnly);
83
84                methodList = m_methods.get(aMethod->name().impl());
85                if (!methodList) {
86                    methodList = new MethodList();
87                    m_methods.set(aMethod->name().impl(), methodList);
88                }
89            }
90            methodList->append(aMethod);
91            env->DeleteLocalRef(aJMethod);
92        }
93        env->DeleteLocalRef(methods);
94    }
95
96    env->DeleteLocalRef(aClass);
97}
98
99JavaClass::~JavaClass()
100{
101    fastFree(const_cast<char*>(m_name));
102
103    JSLock lock(SilenceAssertionsOnly);
104
105    deleteAllValues(m_fields);
106    m_fields.clear();
107
108    MethodListMap::const_iterator end = m_methods.end();
109    for (MethodListMap::const_iterator it = m_methods.begin(); it != end; ++it) {
110        const MethodList* methodList = it->second;
111        deleteAllValues(*methodList);
112        delete methodList;
113    }
114    m_methods.clear();
115}
116
117MethodList JavaClass::methodsNamed(const Identifier& identifier, Instance*) const
118{
119    MethodList* methodList = m_methods.get(identifier.ustring().impl());
120
121    if (methodList)
122        return *methodList;
123    return MethodList();
124}
125
126Field* JavaClass::fieldNamed(const Identifier& identifier, Instance*) const
127{
128    return m_fields.get(identifier.ustring().impl());
129}
130
131bool JavaClass::isNumberClass() const
132{
133    return (!strcmp(m_name, "java.lang.Byte")
134        || !strcmp(m_name, "java.lang.Short")
135        || !strcmp(m_name, "java.lang.Integer")
136        || !strcmp(m_name, "java.lang.Long")
137        || !strcmp(m_name, "java.lang.Float")
138        || !strcmp(m_name, "java.lang.Double"));
139}
140
141bool JavaClass::isBooleanClass() const
142{
143    return !strcmp(m_name, "java.lang.Boolean");
144}
145
146bool JavaClass::isStringClass() const
147{
148    return !strcmp(m_name, "java.lang.String");
149}
150
151#endif // ENABLE(JAVA_BRIDGE)
152