webkit/src/WebCore/bridge/jni/jni_instance.cpp - toolchain/benchmark - Git at Google

 /*
  * Copyright (C) 2003, 2008 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.
  */

 #include "config.h"
 #include "jni_instance.h"

 #if ENABLE(MAC_JAVA_BRIDGE)

 #include "jni_class.h"
 #include "jni_runtime.h"
 #include "jni_utility.h"
 #include "jni_utility_private.h"
 #include "runtime_object.h"
 #include "runtime_root.h"
 #include <runtime/ArgList.h>
 #include <runtime/Error.h>
 #include <runtime/JSLock.h>

 #if PLATFORM(ANDROID)
 #include <assert.h>
 #endif

 #ifdef NDEBUG
 #define JS_LOG(formatAndArgs...) ((void)0)
 #else
 #define JS_LOG(formatAndArgs...) { \
     fprintf (stderr, "%s:%d -- %s:  ", __FILE__, __LINE__, __FUNCTION__); \
     fprintf(stderr, formatAndArgs); \
 }
 #endif

 using namespace JSC::Bindings;
 using namespace JSC;

 JavaInstance::JavaInstance (jobject instance, PassRefPtr<RootObject> rootObject)
     : Instance(rootObject)
 {
     _instance = new JObjectWrapper (instance);
     _class = 0;
 }

 JavaInstance::~JavaInstance ()
 {
     delete _class;
 }

 #define NUM_LOCAL_REFS 64

 void JavaInstance::virtualBegin()
 {
     getJNIEnv()->PushLocalFrame (NUM_LOCAL_REFS);
 }

 void JavaInstance::virtualEnd()
 {
     getJNIEnv()->PopLocalFrame (NULL);
 }

 Class *JavaInstance::getClass() const
 {
     if (_class == 0)
         _class = new JavaClass (_instance->_instance);
     return _class;
 }

 JSValue JavaInstance::stringValue(ExecState* exec) const
 {
     JSLock lock(SilenceAssertionsOnly);

     jstring stringValue = (jstring)callJNIMethod<jobject>(_instance->_instance, "toString", "()Ljava/lang/String;");
     JNIEnv *env = getJNIEnv();
     const jchar *c = getUCharactersFromJStringInEnv(env, stringValue);
     UString u((const UChar *)c, (int)env->GetStringLength(stringValue));
     releaseUCharactersForJStringInEnv(env, stringValue, c);
     return jsString(exec, u);
 }

 JSValue JavaInstance::numberValue(ExecState* exec) const
 {
     jdouble doubleValue = callJNIMethod<jdouble>(_instance->_instance, "doubleValue", "()D");
     return jsNumber(exec, doubleValue);
 }

 JSValue JavaInstance::booleanValue() const
 {
     jboolean booleanValue = callJNIMethod<jboolean>(_instance->_instance, "booleanValue", "()Z");
     return jsBoolean(booleanValue);
 }

 JSValue JavaInstance::invokeMethod (ExecState *exec, const MethodList &methodList, const ArgList &args)
 {
     int i, count = args.size();
     jvalue *jArgs;
     JSValue resultValue;
     Method *method = 0;
     size_t numMethods = methodList.size();

     // Try to find a good match for the overloaded method.  The
     // fundamental problem is that JavaScript doesn have the
     // notion of method overloading and Java does.  We could
     // get a bit more sophisticated and attempt to does some
     // type checking as we as checking the number of parameters.
     Method *aMethod;
     for (size_t methodIndex = 0; methodIndex < numMethods; methodIndex++) {
         aMethod = methodList[methodIndex];
         if (aMethod->numParameters() == count) {
             method = aMethod;
             break;
         }
     }
     if (method == 0) {
         JS_LOG ("unable to find an appropiate method\n");
         return jsUndefined();
     }

     const JavaMethod *jMethod = static_cast<const JavaMethod*>(method);
     JS_LOG ("call %s %s on %p\n", UString(jMethod->name()).UTF8String().c_str(), jMethod->signature(), _instance->_instance);

     if (count > 0) {
         jArgs = (jvalue *)malloc (count * sizeof(jvalue));
     }
     else
         jArgs = 0;

     for (i = 0; i < count; i++) {
         JavaParameter* aParameter = jMethod->parameterAt(i);
         jArgs[i] = convertValueToJValue(exec, args.at(i), aParameter->getJNIType(), aParameter->type());
         JS_LOG("arg[%d] = %s\n", i, args.at(i).toString(exec).ascii());
     }

     jvalue result;

     // Try to use the JNI abstraction first, otherwise fall back to
     // nornmal JNI.  The JNI dispatch abstraction allows the Java plugin
     // to dispatch the call on the appropriate internal VM thread.
     RootObject* rootObject = this->rootObject();
     if (!rootObject)
         return jsUndefined();

     bool handled = false;
     if (rootObject->nativeHandle()) {
         jobject obj = _instance->_instance;
         JSValue exceptionDescription;
         const char *callingURL = 0;  // FIXME, need to propagate calling URL to Java
         handled = dispatchJNICall(exec, rootObject->nativeHandle(), obj, jMethod->isStatic(), jMethod->JNIReturnType(), jMethod->methodID(obj), jArgs, result, callingURL, exceptionDescription);
         if (exceptionDescription) {
             throwError(exec, GeneralError, exceptionDescription.toString(exec));
             free (jArgs);
             return jsUndefined();
         }
     }

     // The following code can be conditionally removed once we have a Tiger update that
     // contains the new Java plugin.  It is needed for builds prior to Tiger.
     if (!handled) {
         jobject obj = _instance->_instance;
         switch (jMethod->JNIReturnType()){
             case void_type:
                 callJNIMethodIDA<void>(obj, jMethod->methodID(obj), jArgs);
                 break;
             case object_type:
                 result.l = callJNIMethodIDA<jobject>(obj, jMethod->methodID(obj), jArgs);
                 break;
             case boolean_type:
                 result.z = callJNIMethodIDA<jboolean>(obj, jMethod->methodID(obj), jArgs);
                 break;
             case byte_type:
                 result.b = callJNIMethodIDA<jbyte>(obj, jMethod->methodID(obj), jArgs);
                 break;
             case char_type:
                 result.c = callJNIMethodIDA<jchar>(obj, jMethod->methodID(obj), jArgs);
                 break;
             case short_type:
                 result.s = callJNIMethodIDA<jshort>(obj, jMethod->methodID(obj), jArgs);
                 break;
             case int_type:
                 result.i = callJNIMethodIDA<jint>(obj, jMethod->methodID(obj), jArgs);
                 break;

             case long_type:
                 result.j = callJNIMethodIDA<jlong>(obj, jMethod->methodID(obj), jArgs);
                 break;
             case float_type:
                 result.f = callJNIMethodIDA<jfloat>(obj, jMethod->methodID(obj), jArgs);
                 break;
             case double_type:
                 result.d = callJNIMethodIDA<jdouble>(obj, jMethod->methodID(obj), jArgs);
                 break;
             case invalid_type:
             default:
                 break;
         }
     }

     switch (jMethod->JNIReturnType()){
         case void_type: {
             resultValue = jsUndefined();
         }
         break;

         case object_type: {
             if (result.l != 0) {
                 const char *arrayType = jMethod->returnType();
                 if (arrayType[0] == '[') {
                     resultValue = JavaArray::convertJObjectToArray(exec, result.l, arrayType, rootObject);
                 }
                 else {
                     resultValue = JavaInstance::create(result.l, rootObject)->createRuntimeObject(exec);
                 }
             }
             else {
                 resultValue = jsUndefined();
             }
         }
         break;

         case boolean_type: {
             resultValue = jsBoolean(result.z);
         }
         break;

         case byte_type: {
             resultValue = jsNumber(exec, result.b);
         }
         break;

         case char_type: {
             resultValue = jsNumber(exec, result.c);
         }
         break;

         case short_type: {
             resultValue = jsNumber(exec, result.s);
         }
         break;

         case int_type: {
             resultValue = jsNumber(exec, result.i);
         }
         break;

         case long_type: {
             resultValue = jsNumber(exec, result.j);
         }
         break;

         case float_type: {
             resultValue = jsNumber(exec, result.f);
         }
         break;

         case double_type: {
             resultValue = jsNumber(exec, result.d);
         }
         break;

         case invalid_type:
         default: {
             resultValue = jsUndefined();
         }
         break;
     }

     free (jArgs);

     return resultValue;
 }

 JSValue JavaInstance::defaultValue(ExecState* exec, PreferredPrimitiveType hint) const
 {
     if (hint == PreferString)
         return stringValue(exec);
     if (hint == PreferNumber)
         return numberValue(exec);
     JavaClass *aClass = static_cast<JavaClass*>(getClass());
     if (aClass->isStringClass())
         return stringValue(exec);
     if (aClass->isNumberClass())
         return numberValue(exec);
     if (aClass->isBooleanClass())
         return booleanValue();
     return valueOf(exec);
 }

 JSValue JavaInstance::valueOf(ExecState* exec) const
 {
     return stringValue(exec);
 }

 JObjectWrapper::JObjectWrapper(jobject instance)
 : _refCount(0)
 {
     assert (instance != 0);

     // Cache the JNIEnv used to get the global ref for this java instanace.
     // It'll be used to delete the reference.
     _env = getJNIEnv();

     _instance = _env->NewGlobalRef (instance);

     JS_LOG ("new global ref %p for %p\n", _instance, instance);

     if  (_instance == NULL) {
         fprintf (stderr, "%s:  could not get GlobalRef for %p\n", __PRETTY_FUNCTION__, instance);
     }
 }

 JObjectWrapper::~JObjectWrapper() {
     JS_LOG ("deleting global ref %p\n", _instance);
     _env->DeleteGlobalRef (_instance);
 }

 #endif // ENABLE(MAC_JAVA_BRIDGE)
	/*
	* Copyright (C) 2003, 2008 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.
	*/

	#include "config.h"
	#include "jni_instance.h"

	#if ENABLE(MAC_JAVA_BRIDGE)

	#include "jni_class.h"
	#include "jni_runtime.h"
	#include "jni_utility.h"
	#include "jni_utility_private.h"
	#include "runtime_object.h"
	#include "runtime_root.h"
	#include <runtime/ArgList.h>
	#include <runtime/Error.h>
	#include <runtime/JSLock.h>

	#if PLATFORM(ANDROID)
	#include <assert.h>
	#endif

	#ifdef NDEBUG
	#define JS_LOG(formatAndArgs...) ((void)0)
	#else
	#define JS_LOG(formatAndArgs...) { \
	fprintf (stderr, "%s:%d -- %s: ", __FILE__, __LINE__, __FUNCTION__); \
	fprintf(stderr, formatAndArgs); \
	}
	#endif

	using namespace JSC::Bindings;
	using namespace JSC;

	JavaInstance::JavaInstance (jobject instance, PassRefPtr<RootObject> rootObject)
	: Instance(rootObject)
	{
	_instance = new JObjectWrapper (instance);
	_class = 0;
	}

	JavaInstance::~JavaInstance ()
	{
	delete _class;
	}

	#define NUM_LOCAL_REFS 64

	void JavaInstance::virtualBegin()
	{
	getJNIEnv()->PushLocalFrame (NUM_LOCAL_REFS);
	}

	void JavaInstance::virtualEnd()
	{
	getJNIEnv()->PopLocalFrame (NULL);
	}

	Class *JavaInstance::getClass() const
	{
	if (_class == 0)
	_class = new JavaClass (_instance->_instance);
	return _class;
	}

	JSValue JavaInstance::stringValue(ExecState* exec) const
	{
	JSLock lock(SilenceAssertionsOnly);

	jstring stringValue = (jstring)callJNIMethod<jobject>(_instance->_instance, "toString", "()Ljava/lang/String;");
	JNIEnv *env = getJNIEnv();
	const jchar *c = getUCharactersFromJStringInEnv(env, stringValue);
	UString u((const UChar *)c, (int)env->GetStringLength(stringValue));
	releaseUCharactersForJStringInEnv(env, stringValue, c);
	return jsString(exec, u);
	}

	JSValue JavaInstance::numberValue(ExecState* exec) const
	{
	jdouble doubleValue = callJNIMethod<jdouble>(_instance->_instance, "doubleValue", "()D");
	return jsNumber(exec, doubleValue);
	}

	JSValue JavaInstance::booleanValue() const
	{
	jboolean booleanValue = callJNIMethod<jboolean>(_instance->_instance, "booleanValue", "()Z");
	return jsBoolean(booleanValue);
	}

	JSValue JavaInstance::invokeMethod (ExecState *exec, const MethodList &methodList, const ArgList &args)
	{
	int i, count = args.size();
	jvalue *jArgs;
	JSValue resultValue;
	Method *method = 0;
	size_t numMethods = methodList.size();

	// Try to find a good match for the overloaded method. The
	// fundamental problem is that JavaScript doesn have the
	// notion of method overloading and Java does. We could
	// get a bit more sophisticated and attempt to does some
	// type checking as we as checking the number of parameters.
	Method *aMethod;
	for (size_t methodIndex = 0; methodIndex < numMethods; methodIndex++) {
	aMethod = methodList[methodIndex];
	if (aMethod->numParameters() == count) {
	method = aMethod;
	break;
	}
	}
	if (method == 0) {
	JS_LOG ("unable to find an appropiate method\n");
	return jsUndefined();
	}

	const JavaMethod jMethod = static_cast<const JavaMethod>(method);
	JS_LOG ("call %s %s on %p\n", UString(jMethod->name()).UTF8String().c_str(), jMethod->signature(), _instance->_instance);

	if (count > 0) {
	jArgs = (jvalue )malloc (count sizeof(jvalue));
	}
	else
	jArgs = 0;

	for (i = 0; i < count; i++) {
	JavaParameter* aParameter = jMethod->parameterAt(i);
	jArgs[i] = convertValueToJValue(exec, args.at(i), aParameter->getJNIType(), aParameter->type());
	JS_LOG("arg[%d] = %s\n", i, args.at(i).toString(exec).ascii());
	}

	jvalue result;

	// Try to use the JNI abstraction first, otherwise fall back to
	// nornmal JNI. The JNI dispatch abstraction allows the Java plugin
	// to dispatch the call on the appropriate internal VM thread.
	RootObject* rootObject = this->rootObject();
	if (!rootObject)
	return jsUndefined();

	bool handled = false;
	if (rootObject->nativeHandle()) {
	jobject obj = _instance->_instance;
	JSValue exceptionDescription;
	const char *callingURL = 0; // FIXME, need to propagate calling URL to Java
	handled = dispatchJNICall(exec, rootObject->nativeHandle(), obj, jMethod->isStatic(), jMethod->JNIReturnType(), jMethod->methodID(obj), jArgs, result, callingURL, exceptionDescription);
	if (exceptionDescription) {
	throwError(exec, GeneralError, exceptionDescription.toString(exec));
	free (jArgs);
	return jsUndefined();
	}
	}

	// The following code can be conditionally removed once we have a Tiger update that
	// contains the new Java plugin. It is needed for builds prior to Tiger.
	if (!handled) {
	jobject obj = _instance->_instance;
	switch (jMethod->JNIReturnType()){
	case void_type:
	callJNIMethodIDA<void>(obj, jMethod->methodID(obj), jArgs);
	break;
	case object_type:
	result.l = callJNIMethodIDA<jobject>(obj, jMethod->methodID(obj), jArgs);
	break;
	case boolean_type:
	result.z = callJNIMethodIDA<jboolean>(obj, jMethod->methodID(obj), jArgs);
	break;
	case byte_type:
	result.b = callJNIMethodIDA<jbyte>(obj, jMethod->methodID(obj), jArgs);
	break;
	case char_type:
	result.c = callJNIMethodIDA<jchar>(obj, jMethod->methodID(obj), jArgs);
	break;
	case short_type:
	result.s = callJNIMethodIDA<jshort>(obj, jMethod->methodID(obj), jArgs);
	break;
	case int_type:
	result.i = callJNIMethodIDA<jint>(obj, jMethod->methodID(obj), jArgs);
	break;

	case long_type:
	result.j = callJNIMethodIDA<jlong>(obj, jMethod->methodID(obj), jArgs);
	break;
	case float_type:
	result.f = callJNIMethodIDA<jfloat>(obj, jMethod->methodID(obj), jArgs);
	break;
	case double_type:
	result.d = callJNIMethodIDA<jdouble>(obj, jMethod->methodID(obj), jArgs);
	break;
	case invalid_type:
	default:
	break;
	}
	}

	switch (jMethod->JNIReturnType()){
	case void_type: {
	resultValue = jsUndefined();
	}
	break;

	case object_type: {
	if (result.l != 0) {
	const char *arrayType = jMethod->returnType();
	if (arrayType[0] == '[') {
	resultValue = JavaArray::convertJObjectToArray(exec, result.l, arrayType, rootObject);
	}
	else {
	resultValue = JavaInstance::create(result.l, rootObject)->createRuntimeObject(exec);
	}
	}
	else {
	resultValue = jsUndefined();
	}
	}
	break;

	case boolean_type: {
	resultValue = jsBoolean(result.z);
	}
	break;

	case byte_type: {
	resultValue = jsNumber(exec, result.b);
	}
	break;

	case char_type: {
	resultValue = jsNumber(exec, result.c);
	}
	break;

	case short_type: {
	resultValue = jsNumber(exec, result.s);
	}
	break;

	case int_type: {
	resultValue = jsNumber(exec, result.i);
	}
	break;

	case long_type: {
	resultValue = jsNumber(exec, result.j);
	}
	break;

	case float_type: {
	resultValue = jsNumber(exec, result.f);
	}
	break;

	case double_type: {
	resultValue = jsNumber(exec, result.d);
	}
	break;

	case invalid_type:
	default: {
	resultValue = jsUndefined();
	}
	break;
	}

	free (jArgs);

	return resultValue;
	}

	JSValue JavaInstance::defaultValue(ExecState* exec, PreferredPrimitiveType hint) const
	{
	if (hint == PreferString)
	return stringValue(exec);
	if (hint == PreferNumber)
	return numberValue(exec);
	JavaClass aClass = static_cast<JavaClass>(getClass());
	if (aClass->isStringClass())
	return stringValue(exec);
	if (aClass->isNumberClass())
	return numberValue(exec);
	if (aClass->isBooleanClass())
	return booleanValue();
	return valueOf(exec);
	}

	JSValue JavaInstance::valueOf(ExecState* exec) const
	{
	return stringValue(exec);
	}

	JObjectWrapper::JObjectWrapper(jobject instance)
	: _refCount(0)
	{
	assert (instance != 0);

	// Cache the JNIEnv used to get the global ref for this java instanace.
	// It'll be used to delete the reference.
	_env = getJNIEnv();

	_instance = _env->NewGlobalRef (instance);

	JS_LOG ("new global ref %p for %p\n", _instance, instance);

	if (_instance == NULL) {
	fprintf (stderr, "%s: could not get GlobalRef for %p\n", __PRETTY_FUNCTION__, instance);
	}
	}

	JObjectWrapper::~JObjectWrapper() {
	JS_LOG ("deleting global ref %p\n", _instance);
	_env->DeleteGlobalRef (_instance);
	}

	#endif // ENABLE(MAC_JAVA_BRIDGE)