| /* |
| * Copyright (C) 2003 Apple Computer, 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_class.h" |
| #include "jni_instance.h" |
| #include "jni_runtime.h" |
| #include "jni_utility.h" |
| #include "runtime_object.h" |
| #include "runtime_root.h" |
| |
| #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 KJS::Bindings; |
| using namespace KJS; |
| |
| 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::begin() |
| { |
| getJNIEnv()->PushLocalFrame (NUM_LOCAL_REFS); |
| } |
| |
| void JavaInstance::end() |
| { |
| getJNIEnv()->PopLocalFrame (NULL); |
| } |
| |
| Class *JavaInstance::getClass() const |
| { |
| if (_class == 0) |
| _class = new JavaClass (_instance->_instance); |
| return _class; |
| } |
| |
| JSValue *JavaInstance::stringValue() const |
| { |
| JSLock lock; |
| |
| jstring stringValue = (jstring)callJNIObjectMethod (_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(u); |
| } |
| |
| JSValue *JavaInstance::numberValue() const |
| { |
| jdouble doubleValue = callJNIDoubleMethod (_instance->_instance, "doubleValue", "()D"); |
| return jsNumber(doubleValue); |
| } |
| |
| JSValue *JavaInstance::booleanValue() const |
| { |
| jboolean booleanValue = callJNIBooleanMethod (_instance->_instance, "booleanValue", "()Z"); |
| return jsBoolean(booleanValue); |
| } |
| |
| JSValue *JavaInstance::invokeMethod (ExecState *exec, const MethodList &methodList, const List &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", method->name(), 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 = NULL; |
| const char *callingURL = 0; // FIXME, need to propagate calling URL to Java |
| handled = dispatchJNICall(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: { |
| callJNIVoidMethodIDA (obj, jMethod->methodID(obj), jArgs); |
| } |
| break; |
| |
| case object_type: { |
| result.l = callJNIObjectMethodIDA (obj, jMethod->methodID(obj), jArgs); |
| } |
| break; |
| |
| case boolean_type: { |
| result.z = callJNIBooleanMethodIDA (obj, jMethod->methodID(obj), jArgs); |
| } |
| break; |
| |
| case byte_type: { |
| result.b = callJNIByteMethodIDA (obj, jMethod->methodID(obj), jArgs); |
| } |
| break; |
| |
| case char_type: { |
| result.c = callJNICharMethodIDA (obj, jMethod->methodID(obj), jArgs); |
| } |
| break; |
| |
| case short_type: { |
| result.s = callJNIShortMethodIDA (obj, jMethod->methodID(obj), jArgs); |
| } |
| break; |
| |
| case int_type: { |
| result.i = callJNIIntMethodIDA (obj, jMethod->methodID(obj), jArgs); |
| } |
| break; |
| |
| case long_type: { |
| result.j = callJNILongMethodIDA (obj, jMethod->methodID(obj), jArgs); |
| } |
| break; |
| |
| case float_type: { |
| result.f = callJNIFloatMethodIDA (obj, jMethod->methodID(obj), jArgs); |
| } |
| break; |
| |
| case double_type: { |
| result.d = callJNIDoubleMethodIDA (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 = Instance::createRuntimeObject(Instance::JavaLanguage, result.l, rootObject); |
| } |
| } |
| else { |
| resultValue = jsUndefined(); |
| } |
| } |
| break; |
| |
| case boolean_type: { |
| resultValue = jsBoolean(result.z); |
| } |
| break; |
| |
| case byte_type: { |
| resultValue = jsNumber(result.b); |
| } |
| break; |
| |
| case char_type: { |
| resultValue = jsNumber(result.c); |
| } |
| break; |
| |
| case short_type: { |
| resultValue = jsNumber(result.s); |
| } |
| break; |
| |
| case int_type: { |
| resultValue = jsNumber(result.i); |
| } |
| break; |
| |
| case long_type: { |
| resultValue = jsNumber(result.j); |
| } |
| break; |
| |
| case float_type: { |
| resultValue = jsNumber(result.f); |
| } |
| break; |
| |
| case double_type: { |
| resultValue = jsNumber(result.d); |
| } |
| break; |
| |
| case invalid_type: |
| default: { |
| resultValue = jsUndefined(); |
| } |
| break; |
| } |
| |
| free (jArgs); |
| |
| return resultValue; |
| } |
| |
| JSValue *JavaInstance::defaultValue (JSType hint) const |
| { |
| if (hint == StringType) { |
| return stringValue(); |
| } |
| else if (hint == NumberType) { |
| return numberValue(); |
| } |
| else if (hint == BooleanType) { |
| return booleanValue(); |
| } |
| else if (hint == UnspecifiedType) { |
| JavaClass *aClass = static_cast<JavaClass*>(getClass()); |
| if (aClass->isStringClass()) { |
| return stringValue(); |
| } |
| else if (aClass->isNumberClass()) { |
| return numberValue(); |
| } |
| else if (aClass->isBooleanClass()) { |
| return booleanValue(); |
| } |
| } |
| |
| return valueOf(); |
| } |
| |
| JSValue *JavaInstance::valueOf() const |
| { |
| return stringValue(); |
| } |
| |
| 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); |
| } |
