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