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/*
* Copyright (C) 2003, 2004, 2005, 2008, 2009, 2010 Apple Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE COMPUTER, INC. OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef JNIUtility_h
#define JNIUtility_h
#if ENABLE(JAVA_BRIDGE)
#include "JavaType.h"
#if OS(MAC_OS_X)
#include <JavaVM/jni.h>
#else
#include <jni.h>
#endif
namespace JSC {
namespace Bindings {
const char* getCharactersFromJString(jstring);
void releaseCharactersForJString(jstring, const char*);
const char* getCharactersFromJStringInEnv(JNIEnv*, jstring);
void releaseCharactersForJStringInEnv(JNIEnv*, jstring, const char*);
const jchar* getUCharactersFromJStringInEnv(JNIEnv*, jstring);
void releaseUCharactersForJStringInEnv(JNIEnv*, jstring, const jchar*);
JavaType javaTypeFromClassName(const char* name);
JavaType javaTypeFromPrimitiveType(char type);
const char* signatureFromJavaType(JavaType);
jvalue getJNIField(jobject, JavaType, const char* name, const char* signature);
jvalue callJNIMethod(jobject, JavaType returnType, const char* name, const char* signature, jvalue* args);
jmethodID getMethodID(jobject, const char* name, const char* sig);
JNIEnv* getJNIEnv();
JavaVM* getJavaVM();
void setJavaVM(JavaVM*);
template <typename T> struct JNICaller;
template<> struct JNICaller<void> {
static void callA(jobject obj, jmethodID mid, jvalue* args)
{
getJNIEnv()->CallVoidMethodA(obj, mid, args);
}
static void callV(jobject obj, jmethodID mid, va_list args)
{
getJNIEnv()->CallVoidMethodV(obj, mid, args);
}
};
template<> struct JNICaller<jobject> {
static jobject callA(jobject obj, jmethodID mid, jvalue* args)
{
return getJNIEnv()->CallObjectMethodA(obj, mid, args);
}
static jobject callV(jobject obj, jmethodID mid, va_list args)
{
return getJNIEnv()->CallObjectMethodV(obj, mid, args);
}
};
template<> struct JNICaller<jboolean> {
static jboolean callA(jobject obj, jmethodID mid, jvalue* args)
{
return getJNIEnv()->CallBooleanMethodA(obj, mid, args);
}
static jboolean callV(jobject obj, jmethodID mid, va_list args)
{
return getJNIEnv()->CallBooleanMethodV(obj, mid, args);
}
static jboolean callStaticV(jclass cls, jmethodID mid, va_list args)
{
return getJNIEnv()->CallStaticBooleanMethod(cls, mid, args);
}
};
template<> struct JNICaller<jbyte> {
static jbyte callA(jobject obj, jmethodID mid, jvalue* args)
{
return getJNIEnv()->CallByteMethodA(obj, mid, args);
}
static jbyte callV(jobject obj, jmethodID mid, va_list args)
{
return getJNIEnv()->CallByteMethodV(obj, mid, args);
}
};
template<> struct JNICaller<jchar> {
static jchar callA(jobject obj, jmethodID mid, jvalue* args)
{
return getJNIEnv()->CallCharMethodA(obj, mid, args);
}
static jchar callV(jobject obj, jmethodID mid, va_list args)
{
return getJNIEnv()->CallCharMethodV(obj, mid, args);
}
};
template<> struct JNICaller<jshort> {
static jshort callA(jobject obj, jmethodID mid, jvalue* args)
{
return getJNIEnv()->CallShortMethodA(obj, mid, args);
}
static jshort callV(jobject obj, jmethodID mid, va_list args)
{
return getJNIEnv()->CallShortMethodV(obj, mid, args);
}
};
template<> struct JNICaller<jint> {
static jint callA(jobject obj, jmethodID mid, jvalue* args)
{
return getJNIEnv()->CallIntMethodA(obj, mid, args);
}
static jint callV(jobject obj, jmethodID mid, va_list args)
{
return getJNIEnv()->CallIntMethodV(obj, mid, args);
}
};
template<> struct JNICaller<jlong> {
static jlong callA(jobject obj, jmethodID mid, jvalue* args)
{
return getJNIEnv()->CallLongMethodA(obj, mid, args);
}
static jlong callV(jobject obj, jmethodID mid, va_list args)
{
return getJNIEnv()->CallLongMethodV(obj, mid, args);
}
};
template<> struct JNICaller<jfloat> {
static jfloat callA(jobject obj, jmethodID mid, jvalue* args)
{
return getJNIEnv()->CallFloatMethodA(obj, mid, args);
}
static jfloat callV(jobject obj, jmethodID mid, va_list args)
{
return getJNIEnv()->CallFloatMethodV(obj, mid, args);
}
};
template<> struct JNICaller<jdouble> {
static jdouble callA(jobject obj, jmethodID mid, jvalue* args)
{
return getJNIEnv()->CallDoubleMethodA(obj, mid, args);
}
static jdouble callV(jobject obj, jmethodID mid, va_list args)
{
return getJNIEnv()->CallDoubleMethodV(obj, mid, args);
}
};
template<typename T> T callJNIMethodIDA(jobject obj, jmethodID mid, jvalue *args)
{
return JNICaller<T>::callA(obj, mid, args);
}
template<typename T>
static T callJNIMethodV(jobject obj, const char* name, const char* sig, va_list args)
{
JavaVM* jvm = getJavaVM();
JNIEnv* env = getJNIEnv();
if (obj && jvm && env) {
jclass cls = env->GetObjectClass(obj);
if (cls) {
jmethodID mid = env->GetMethodID(cls, name, sig);
if (mid) {
// Avoids references to cls without popping the local frame.
env->DeleteLocalRef(cls);
return JNICaller<T>::callV(obj, mid, args);
}
LOG_ERROR("Could not find method: %s for %p", name, obj);
env->ExceptionDescribe();
env->ExceptionClear();
fprintf(stderr, "\n");
env->DeleteLocalRef(cls);
} else
LOG_ERROR("Could not find class for %p", obj);
}
return 0;
}
template<typename T>
T callJNIMethod(jobject obj, const char* methodName, const char* methodSignature, ...)
{
va_list args;
va_start(args, methodSignature);
T result = callJNIMethodV<T>(obj, methodName, methodSignature, args);
va_end(args);
return result;
}
template<typename T>
T callJNIStaticMethod(jclass cls, const char* methodName, const char* methodSignature, ...)
{
JavaVM* jvm = getJavaVM();
JNIEnv* env = getJNIEnv();
va_list args;
va_start(args, methodSignature);
T result = 0;
if (cls && jvm && env) {
jmethodID mid = env->GetStaticMethodID(cls, methodName, methodSignature);
if (mid)
result = JNICaller<T>::callStaticV(cls, mid, args);
else {
LOG_ERROR("Could not find method: %s for %p", methodName, cls);
env->ExceptionDescribe();
env->ExceptionClear();
fprintf(stderr, "\n");
}
}
va_end(args);
return result;
}
} // namespace Bindings
} // namespace JSC
#endif // ENABLE(JAVA_BRIDGE)
#endif // JNIUtility_h
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