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      1 /*
      2  * Copyright (C) 2003, 2004, 2005, 2007, 2009 Apple Inc. All rights reserved.
      3  * Copyright 2010, The Android Open Source Project
      4  *
      5  * Redistribution and use in source and binary forms, with or without
      6  * modification, are permitted provided that the following conditions
      7  * are met:
      8  * 1. Redistributions of source code must retain the above copyright
      9  *    notice, this list of conditions and the following disclaimer.
     10  * 2. Redistributions in binary form must reproduce the above copyright
     11  *    notice, this list of conditions and the following disclaimer in the
     12  *    documentation and/or other materials provided with the distribution.
     13  *
     14  * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY
     15  * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     16  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     17  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE COMPUTER, INC. OR
     18  * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
     19  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
     20  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
     21  * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
     22  * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     23  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
     24  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     25  */
     26 
     27 #include "config.h"
     28 #include "JavaArrayJSC.h"
     29 
     30 #if ENABLE(JAVA_BRIDGE)
     31 
     32 #include "JNIUtilityPrivate.h"
     33 #include "JavaInstanceJSC.h"
     34 #include "JobjectWrapper.h"
     35 #include "Logging.h"
     36 #include "runtime_array.h"
     37 #include "runtime_object.h"
     38 #include "runtime_root.h"
     39 #include <runtime/Error.h>
     40 
     41 using namespace JSC;
     42 using namespace JSC::Bindings;
     43 using namespace WebCore;
     44 
     45 JSValue JavaArray::convertJObjectToArray(ExecState* exec, jobject anObject, const char* type, PassRefPtr<RootObject> rootObject)
     46 {
     47     if (type[0] != '[')
     48         return jsUndefined();
     49 
     50     return new (exec) RuntimeArray(exec, new JavaArray(anObject, type, rootObject));
     51 }
     52 
     53 JavaArray::JavaArray(jobject array, const char* type, PassRefPtr<RootObject> rootObject)
     54     : Array(rootObject)
     55 {
     56     m_array = new JobjectWrapper(array);
     57     // Java array are fixed length, so we can cache length.
     58     JNIEnv* env = getJNIEnv();
     59     m_length = env->GetArrayLength(static_cast<jarray>(m_array->m_instance));
     60     m_type = strdup(type);
     61 }
     62 
     63 JavaArray::~JavaArray()
     64 {
     65     free(const_cast<char*>(m_type));
     66 }
     67 
     68 RootObject* JavaArray::rootObject() const
     69 {
     70     return m_rootObject && m_rootObject->isValid() ? m_rootObject.get() : 0;
     71 }
     72 
     73 void JavaArray::setValueAt(ExecState* exec, unsigned index, JSValue aValue) const
     74 {
     75     JNIEnv* env = getJNIEnv();
     76     char* javaClassName = 0;
     77 
     78     JavaType arrayType = javaTypeFromPrimitiveType(m_type[1]);
     79     if (m_type[1] == 'L') {
     80         // The type of the array will be something like:
     81         // "[Ljava.lang.string;". This is guaranteed, so no need
     82         // for extra sanity checks.
     83         javaClassName = strdup(&m_type[2]);
     84         javaClassName[strchr(javaClassName, ';')-javaClassName] = 0;
     85     }
     86     jvalue aJValue = convertValueToJValue(exec, m_rootObject.get(), aValue, arrayType, javaClassName);
     87 
     88     switch (arrayType) {
     89     case JavaTypeObject:
     90         {
     91             env->SetObjectArrayElement(static_cast<jobjectArray>(javaArray()), index, aJValue.l);
     92             break;
     93         }
     94 
     95     case JavaTypeBoolean:
     96         {
     97             env->SetBooleanArrayRegion(static_cast<jbooleanArray>(javaArray()), index, 1, &aJValue.z);
     98             break;
     99         }
    100 
    101     case JavaTypeByte:
    102         {
    103             env->SetByteArrayRegion(static_cast<jbyteArray>(javaArray()), index, 1, &aJValue.b);
    104             break;
    105         }
    106 
    107     case JavaTypeChar:
    108         {
    109             env->SetCharArrayRegion(static_cast<jcharArray>(javaArray()), index, 1, &aJValue.c);
    110             break;
    111         }
    112 
    113     case JavaTypeShort:
    114         {
    115             env->SetShortArrayRegion(static_cast<jshortArray>(javaArray()), index, 1, &aJValue.s);
    116             break;
    117         }
    118 
    119     case JavaTypeInt:
    120         {
    121             env->SetIntArrayRegion(static_cast<jintArray>(javaArray()), index, 1, &aJValue.i);
    122             break;
    123         }
    124 
    125     case JavaTypeLong:
    126         {
    127             env->SetLongArrayRegion(static_cast<jlongArray>(javaArray()), index, 1, &aJValue.j);
    128         }
    129 
    130     case JavaTypeFloat:
    131         {
    132             env->SetFloatArrayRegion(static_cast<jfloatArray>(javaArray()), index, 1, &aJValue.f);
    133             break;
    134         }
    135 
    136     case JavaTypeDouble:
    137         {
    138             env->SetDoubleArrayRegion(static_cast<jdoubleArray>(javaArray()), index, 1, &aJValue.d);
    139             break;
    140         }
    141     default:
    142         break;
    143     }
    144 
    145     if (javaClassName)
    146         free(const_cast<char*>(javaClassName));
    147 }
    148 
    149 JSValue JavaArray::valueAt(ExecState* exec, unsigned index) const
    150 {
    151     JNIEnv* env = getJNIEnv();
    152     JavaType arrayType = javaTypeFromPrimitiveType(m_type[1]);
    153     switch (arrayType) {
    154     case JavaTypeObject:
    155         {
    156             jobjectArray objectArray = static_cast<jobjectArray>(javaArray());
    157             jobject anObject;
    158             anObject = env->GetObjectArrayElement(objectArray, index);
    159 
    160             // No object?
    161             if (!anObject)
    162                 return jsNull();
    163 
    164             // Nested array?
    165             if (m_type[1] == '[')
    166                 return JavaArray::convertJObjectToArray(exec, anObject, m_type + 1, rootObject());
    167             // or array of other object type?
    168             return JavaInstance::create(anObject, rootObject())->createRuntimeObject(exec);
    169         }
    170 
    171     case JavaTypeBoolean:
    172         {
    173             jbooleanArray booleanArray = static_cast<jbooleanArray>(javaArray());
    174             jboolean aBoolean;
    175             env->GetBooleanArrayRegion(booleanArray, index, 1, &aBoolean);
    176             return jsBoolean(aBoolean);
    177         }
    178 
    179     case JavaTypeByte:
    180         {
    181             jbyteArray byteArray = static_cast<jbyteArray>(javaArray());
    182             jbyte aByte;
    183             env->GetByteArrayRegion(byteArray, index, 1, &aByte);
    184             return jsNumber(aByte);
    185         }
    186 
    187     case JavaTypeChar:
    188         {
    189             jcharArray charArray = static_cast<jcharArray>(javaArray());
    190             jchar aChar;
    191             env->GetCharArrayRegion(charArray, index, 1, &aChar);
    192             return jsNumber(aChar);
    193             break;
    194         }
    195 
    196     case JavaTypeShort:
    197         {
    198             jshortArray shortArray = static_cast<jshortArray>(javaArray());
    199             jshort aShort;
    200             env->GetShortArrayRegion(shortArray, index, 1, &aShort);
    201             return jsNumber(aShort);
    202         }
    203 
    204     case JavaTypeInt:
    205         {
    206             jintArray intArray = static_cast<jintArray>(javaArray());
    207             jint anInt;
    208             env->GetIntArrayRegion(intArray, index, 1, &anInt);
    209             return jsNumber(anInt);
    210         }
    211 
    212     case JavaTypeLong:
    213         {
    214             jlongArray longArray = static_cast<jlongArray>(javaArray());
    215             jlong aLong;
    216             env->GetLongArrayRegion(longArray, index, 1, &aLong);
    217             return jsNumber(aLong);
    218         }
    219 
    220     case JavaTypeFloat:
    221         {
    222             jfloatArray floatArray = static_cast<jfloatArray>(javaArray());
    223             jfloat aFloat;
    224             env->GetFloatArrayRegion(floatArray, index, 1, &aFloat);
    225             return jsNumber(aFloat);
    226         }
    227 
    228     case JavaTypeDouble:
    229         {
    230             jdoubleArray doubleArray = static_cast<jdoubleArray>(javaArray());
    231             jdouble aDouble;
    232             env->GetDoubleArrayRegion(doubleArray, index, 1, &aDouble);
    233             return jsNumber(aDouble);
    234         }
    235     default:
    236         break;
    237     }
    238     return jsUndefined();
    239 }
    240 
    241 unsigned int JavaArray::getLength() const
    242 {
    243     return m_length;
    244 }
    245 
    246 #endif // ENABLE(JAVA_BRIDGE)
    247