#include "java.h"

#include <string>

#ifdef WIN32

#else

#include <unistd.h>

#endif

#include "javaObject.h"

#include "javaScope.h"

#include "methodCallBaton.h"

#include "node_NodeDynamicProxyClass.h"

#include <nan.h>

#include <node_version.h>

#include <queue>

#include <sstream>

#define DYNAMIC_PROXY_JS_ERROR -4

#ifdef WIN32

typedef long threadId;

#else

typedef pthread_t threadId;

#endif

threadId v8ThreadId;

bool isDefaultLoopRunning = false;

std::queue<DynamicProxyJsCallData *> queue_dynamicProxyJsCallData;

uv_mutex_t uvMutex_dynamicProxyJsCall;

uv_async_t uvAsync_dynamicProxyJsCall;

/*static*/ Nan::Persistent<v8::FunctionTemplate> Java::s_ct;

/*static*/ std::string Java::s_nativeBindingLocation;

void my_sleep(int dur) {

#ifdef WIN32

Sleep(dur);

#else

usleep(dur);

#endif

}

threadId my_getThreadId() {

#ifdef WIN32

return (long)GetCurrentThreadId();

#else

return pthread_self();

#endif

}

bool v8ThreadIdEquals(threadId a, threadId b) {

#ifdef WIN32

return a == b;

#else

return pthread_equal(a, b);

#endif

}

void EIO_CallJs(DynamicProxyJsCallData *callData);

void uvAsyncCb_dynamicProxyJsCall(uv_async_t *handle) {

DynamicProxyJsCallData *callData;

do {

uv_mutex_lock(&uvMutex_dynamicProxyJsCall);

if (!queue_dynamicProxyJsCallData.empty()) {

callData = queue_dynamicProxyJsCallData.front();

queue_dynamicProxyJsCallData.pop();

} else {

callData = NULL;

}

uv_mutex_unlock(&uvMutex_dynamicProxyJsCall);

if (callData) {

EIO_CallJs(callData);

}

} while (callData);

}

/*static*/ void Java::Init(v8::Local<v8::Object> target) {

Nan::HandleScope scope;

v8ThreadId = my_getThreadId();

isDefaultLoopRunning = false; // init as false

uv_mutex_init(&uvMutex_dynamicProxyJsCall);

v8::Local<v8::FunctionTemplate> t = Nan::New<v8::FunctionTemplate>(New);

s_ct.Reset(t);

t->InstanceTemplate()->SetInternalFieldCount(1);

t->SetClassName(Nan::New<v8::String>("Java").ToLocalChecked());

Nan::SetPrototypeMethod(t, "getClassLoader", getClassLoader);

Nan::SetPrototypeMethod(t, "newInstance", newInstance);

Nan::SetPrototypeMethod(t, "newInstanceSync", newInstanceSync);

Nan::SetPrototypeMethod(t, "newProxy", newProxy);

Nan::SetPrototypeMethod(t, "callStaticMethod", callStaticMethod);

Nan::SetPrototypeMethod(t, "callStaticMethodSync", callStaticMethodSync);

Nan::SetPrototypeMethod(t, "callMethod", callMethod);

Nan::SetPrototypeMethod(t, "callMethodSync", callMethodSync);

Nan::SetPrototypeMethod(t, "findClassSync", findClassSync);

Nan::SetPrototypeMethod(t, "newArray", newArray);

Nan::SetPrototypeMethod(t, "newByte", newByte);

Nan::SetPrototypeMethod(t, "newShort", newShort);

Nan::SetPrototypeMethod(t, "newLong", newLong);

Nan::SetPrototypeMethod(t, "newChar", newChar);

Nan::SetPrototypeMethod(t, "newFloat", newFloat);

Nan::SetPrototypeMethod(t, "newDouble", newDouble);

Nan::SetPrototypeMethod(t, "getStaticFieldValue", getStaticFieldValue);

Nan::SetPrototypeMethod(t, "setStaticFieldValue", setStaticFieldValue);

Nan::SetPrototypeMethod(t, "instanceOf", instanceOf);

Nan::SetPrototypeMethod(t, "stop", stop);

Nan::Set(target, Nan::New<v8::String>("Java").ToLocalChecked(), Nan::GetFunction(t).ToLocalChecked());

JavaProxyObject::init();

}

NAN_METHOD(Java::New) {

Nan::HandleScope scope;

if (!isDefaultLoopRunning) {

uv_async_init(uv_default_loop(), &uvAsync_dynamicProxyJsCall, uvAsyncCb_dynamicProxyJsCall);

isDefaultLoopRunning = true;

}

Java *self = new Java();

self->Wrap(info.This());

Nan::Set(self->handle(), Nan::New<v8::String>("classpath").ToLocalChecked(), Nan::New<v8::Array>());

Nan::Set(self->handle(), Nan::New<v8::String>("options").ToLocalChecked(), Nan::New<v8::Array>());

Nan::Set(self->handle(), Nan::New<v8::String>("nativeBindingLocation").ToLocalChecked(),

Nan::New<v8::String>("Not Set").ToLocalChecked());

Nan::Set(self->handle(), Nan::New<v8::String>("asyncOptions").ToLocalChecked(), Nan::Null());

info.GetReturnValue().Set(info.This());

}

Java::Java() {

this->m_jvm = NULL;

this->m_env = NULL;

m_SyncSuffix = "Sync";

m_AsyncSuffix = "";

doSync = true;

doAsync = true;

doPromise = false;

}

Java::~Java() { this->destroyJVM(&this->m_jvm, &this->m_env); }

v8::Local<v8::Value> Java::ensureJvm() {

if (!m_jvm) {

v8::Local<v8::Value> result = createJVM(&this->m_jvm, &this->m_env);

assert(result->IsNull());

return result;

}

return Nan::Null();

}

void Java::configureAsync(v8::Local<v8::Value> &asyncOptions) {

v8::Local<v8::Object> asyncOptionsObj = asyncOptions.As<v8::Object>();

m_SyncSuffix = "invalid";

m_AsyncSuffix = "invalid";

m_PromiseSuffix = "invalid";

doSync = false;

doAsync = false;

doPromise = false;

v8::MaybeLocal<v8::Value> maybeSuffixValue =

Nan::Get(asyncOptionsObj, Nan::New<v8::String>("syncSuffix").ToLocalChecked());

v8::Local<v8::Value> suffixValue;

if (maybeSuffixValue.ToLocal(&suffixValue) && suffixValue->IsString()) {

v8::Local<v8::String> suffix = suffixValue->ToString(Nan::GetCurrentContext()).ToLocalChecked();

Nan::Utf8String utf8(suffix);

m_SyncSuffix.assign(*utf8);

doSync = true;

}

maybeSuffixValue = Nan::Get(asyncOptionsObj, Nan::New<v8::String>("asyncSuffix").ToLocalChecked());

if (maybeSuffixValue.ToLocal(&suffixValue) && suffixValue->IsString()) {

v8::Local<v8::String> suffix = suffixValue->ToString(Nan::GetCurrentContext()).ToLocalChecked();

Nan::Utf8String utf8(suffix);

m_AsyncSuffix.assign(*utf8);

doAsync = true;

}

maybeSuffixValue = Nan::Get(asyncOptionsObj, Nan::New<v8::String>("promiseSuffix").ToLocalChecked());

if (maybeSuffixValue.ToLocal(&suffixValue) && suffixValue->IsString()) {

v8::Local<v8::String> suffix = suffixValue->ToString(Nan::GetCurrentContext()).ToLocalChecked();

Nan::Utf8String utf8(suffix);

m_PromiseSuffix.assign(*utf8);

v8::MaybeLocal<v8::Value> maybePromisify =

Nan::Get(asyncOptionsObj, Nan::New<v8::String>("promisify").ToLocalChecked());

v8::Local<v8::Value> promisify;

if (maybePromisify.ToLocal(&promisify) && !promisify->IsFunction()) {

fprintf(stderr, "asyncOptions.promisify must be a function");

assert(promisify->IsFunction());

}

doPromise = true;

}

if (doSync && doAsync) {

assert(m_SyncSuffix != m_AsyncSuffix);

}

if (doSync && doPromise) {

assert(m_SyncSuffix != m_PromiseSuffix);

}

if (doAsync && doPromise) {

assert(m_AsyncSuffix != m_PromiseSuffix);

}

m_asyncOptions.Reset(asyncOptionsObj);

}

v8::Local<v8::Value> Java::createJVM(JavaVM **jvm, JNIEnv **env) {

v8::MaybeLocal<v8::Value> maybeAsyncOptions =

Nan::Get(this->handle(), Nan::New<v8::String>("asyncOptions").ToLocalChecked());

v8::Local<v8::Value> asyncOptions;

if (maybeAsyncOptions.ToLocal(&asyncOptions) && asyncOptions->IsObject()) {

configureAsync(asyncOptions);

}

// setup classpath

std::ostringstream classPath;

classPath << "-Djava.class.path=";

v8::MaybeLocal<v8::Value> maybeClassPathValue =

Nan::Get(this->handle(), Nan::New<v8::String>("classpath").ToLocalChecked());

v8::Local<v8::Value> classPathValue;

if (!maybeClassPathValue.ToLocal(&classPathValue) || !classPathValue->IsArray()) {

return Nan::TypeError("Classpath must be an array");

}

v8::Local<v8::Array> classPathArrayTemp = v8::Local<v8::Array>::Cast(classPathValue);

m_classPathArray.Reset(classPathArrayTemp);

for (uint32_t i = 0; i < classPathArrayTemp->Length(); i++) {

if (i != 0) {

#ifdef WIN32

classPath << ";";

#else

classPath << ":";

#endif

}

v8::Local<v8::Value> arrayItemValue = classPathArrayTemp->Get(Nan::GetCurrentContext(), i).ToLocalChecked();

if (!arrayItemValue->IsString()) {

return Nan::TypeError("Classpath must only contain strings");

}

v8::Local<v8::String> arrayItem = arrayItemValue->ToString(Nan::GetCurrentContext()).ToLocalChecked();

Nan::Utf8String arrayItemStr(arrayItem);

classPath << *arrayItemStr;

}

// set the native binding location

v8::Local<v8::Value> v8NativeBindingLocation =

Nan::Get(this->handle(), Nan::New<v8::String>("nativeBindingLocation").ToLocalChecked())

.FromMaybe(v8::Local<v8::Value>());

Nan::Utf8String nativeBindingLocationStr(v8NativeBindingLocation);

s_nativeBindingLocation = *nativeBindingLocationStr;

// get other options

v8::Local<v8::Value> optionsValue =

Nan::Get(this->handle(), Nan::New<v8::String>("options").ToLocalChecked()).FromMaybe(v8::Local<v8::Value>());

if (!optionsValue->IsArray()) {

return Nan::TypeError("options must be an array");

}

v8::Local<v8::Array> optionsArrayTemp = v8::Local<v8::Array>::Cast(optionsValue);

m_optionsArray.Reset(optionsArrayTemp);

// create vm options

int vmOptionsCount = optionsArrayTemp->Length() + 1;

JavaVMOption *vmOptions = new JavaVMOption[vmOptionsCount];

// printf("classPath: %s\n", classPath.str().c_str());

vmOptions[0].optionString = strdup(classPath.str().c_str());

for (uint32_t i = 0; i < optionsArrayTemp->Length(); i++) {

v8::Local<v8::Value> arrayItemValue = optionsArrayTemp->Get(Nan::GetCurrentContext(), i).ToLocalChecked();

if (!arrayItemValue->IsString()) {

delete[] vmOptions;

return Nan::TypeError("options must only contain strings");

}

v8::Local<v8::String> arrayItem = arrayItemValue->ToString(Nan::GetCurrentContext()).ToLocalChecked();

Nan::Utf8String arrayItemStr(arrayItem);

vmOptions[i + 1].optionString = strdup(*arrayItemStr);

}

JavaVMInitArgs args;

// The JNI invocation is documented to include a function JNI_GetDefaultJavaVMInitArgs that

// was formerly called here. But the documentation from Oracle is confusing/contradictory.

// 1) It claims that the caller must set args.version before calling JNI_GetDefaultJavaVMInitArgs, which

// we did not do.

// 2) The sample code provide at the top of the doc doesn't even call JNI_GetDefaultJavaVMInitArgs.

// 3) The Oracle documentation for Java 6 through Java 8 all contain a comment "Note that in the JDK/JRE, there is no

// longer any need to call JNI_GetDefaultJavaVMInitArgs."

// 4) It seems that some platforms don't implement JNI_GetDefaultJavaVMInitArgs, or have

// marked it deprecated.

// Omitting the call to JNI_GetDefaultJavaVMInitArgs works fine on Mac and Linux with Java 7 and Java 8.

// The Oracle documentation is here:

// http://docs.oracle.com/javase/6/docs/technotes/guides/jni/spec/invocation.html

// http://docs.oracle.com/javase/7/docs/technotes/guides/jni/spec/invocation.html

// http://docs.oracle.com/javase/8/docs/technotes/guides/jni/spec/invocation.html

args.version = JNI_BEST_VERSION;

// JNI_GetDefaultJavaVMInitArgs(&args); // If this turns out to be necessary, it should be called here.

args.ignoreUnrecognized = false;

args.options = vmOptions;

args.nOptions = vmOptionsCount;

JavaVM *jvmTemp;

JNI_CreateJavaVM(&jvmTemp, (void **)env, &args);

*jvm = jvmTemp;

delete[] vmOptions;

m_classLoader = getSystemClassLoader(*env);

v8::Local<v8::Value> onJvmCreated =

Nan::Get(this->handle(), Nan::New<v8::String>("onJvmCreated").ToLocalChecked()).FromMaybe(v8::Local<v8::Value>());

// TODO: this handles sets put doesn't prevent modifing the underlying data. So java.classpath.push will still work

// which is invalid.

Nan::SetAccessor(this->handle(), Nan::New<v8::String>("classpath").ToLocalChecked(),

AccessorProhibitsOverwritingGetter, AccessorProhibitsOverwritingSetter);

Nan::SetAccessor(this->handle(), Nan::New<v8::String>("options").ToLocalChecked(), AccessorProhibitsOverwritingGetter,

AccessorProhibitsOverwritingSetter);

Nan::SetAccessor(this->handle(), Nan::New<v8::String>("nativeBindingLocation").ToLocalChecked(),

AccessorProhibitsOverwritingGetter, AccessorProhibitsOverwritingSetter);

Nan::SetAccessor(this->handle(), Nan::New<v8::String>("asyncOptions").ToLocalChecked(),

AccessorProhibitsOverwritingGetter, AccessorProhibitsOverwritingSetter);

Nan::SetAccessor(this->handle(), Nan::New<v8::String>("onJvmCreated").ToLocalChecked(),

AccessorProhibitsOverwritingGetter, AccessorProhibitsOverwritingSetter);

if (onJvmCreated->IsFunction()) {

v8::Local<v8::Function> onJvmCreatedFunc = onJvmCreated.As<v8::Function>();

v8::Local<v8::Object> context = Nan::New<v8::Object>();

Nan::Call(onJvmCreatedFunc, context, 0, NULL);

}

return Nan::Null();

}

NAN_GETTER(Java::AccessorProhibitsOverwritingGetter) {

Java *self = Nan::ObjectWrap::Unwrap<Java>(info.This());

Nan::HandleScope scope;

Nan::Utf8String nameStr(property);

if (!strcmp("classpath", *nameStr)) {

info.GetReturnValue().Set(Nan::New(self->m_classPathArray));

return;

} else if (!strcmp("options", *nameStr)) {

info.GetReturnValue().Set(Nan::New(self->m_optionsArray));

return;

} else if (!strcmp("nativeBindingLocation", *nameStr)) {

info.GetReturnValue().Set(Nan::New(Java::s_nativeBindingLocation.c_str()).ToLocalChecked());

return;

} else if (!strcmp("asyncOptions", *nameStr)) {

info.GetReturnValue().Set(Nan::New(self->m_asyncOptions));

return;

} else if (!strcmp("onJvmCreated", *nameStr)) {

// There is no good reason to get onJvmCreated, so just fall through to error below.

}

std::ostringstream errStr;

errStr << "Invalid call to accessor " << *nameStr;

info.GetReturnValue().Set(Nan::Error(errStr.str().c_str()));

}

NAN_SETTER(Java::AccessorProhibitsOverwritingSetter) {

Nan::Utf8String nameStr(property);

std::ostringstream errStr;

errStr << "Cannot set " << *nameStr << " after calling any other java function.";

Nan::ThrowError(errStr.str().c_str());

}

void Java::destroyJVM(JavaVM **jvm, JNIEnv **env) {

(*jvm)->DestroyJavaVM();

*jvm = NULL;

*env = NULL;

}

NAN_METHOD(Java::getClassLoader) {

Nan::HandleScope scope;

Java *self = Nan::ObjectWrap::Unwrap<Java>(info.This());

v8::Local<v8::Value> ensureJvmResults = self->ensureJvm();

if (!ensureJvmResults->IsNull()) {

info.GetReturnValue().Set(ensureJvmResults);

return;

}

JNIEnv *env = self->getJavaEnv();

JavaScope javaScope(env);

jclass classClazz = env->FindClass("java/lang/ClassLoader");

jmethodID class_getClassLoader =

env->GetStaticMethodID(classClazz, "getSystemClassLoader", "()Ljava/lang/ClassLoader;");

jobject classLoader = env->CallStaticObjectMethod(classClazz, class_getClassLoader);

checkJavaException(env);

jobject result = env->NewGlobalRef(classLoader);

info.GetReturnValue().Set(javaToV8(self, env, result));

}

NAN_METHOD(Java::newInstance) {

Nan::HandleScope scope;

Java *self = Nan::ObjectWrap::Unwrap<Java>(info.This());

v8::Local<v8::Value> ensureJvmResults = self->ensureJvm();

if (!ensureJvmResults->IsNull()) {

info.GetReturnValue().Set(ensureJvmResults);

return;

}

JNIEnv *env = self->getJavaEnv();

JavaScope javaScope(env);

int argsStart = 0;

int argsEnd = info.Length();

// arguments

ARGS_FRONT_CLASSNAME();

ARGS_BACK_CALLBACK();

// find class

jclass clazz = javaFindClass(env, className);

if (clazz == NULL) {

EXCEPTION_CALL_CALLBACK(self, "Could not find class " << className.c_str());

info.GetReturnValue().SetUndefined();

return;

}

// get method

jobjectArray methodArgs = v8ToJava(env, info, argsStart, argsEnd);

jobject method = javaFindConstructor(env, clazz, methodArgs);

if (method == NULL) {

std::string msg = methodNotFoundToString(env, clazz, className, true, info, argsStart, argsEnd);

EXCEPTION_CALL_CALLBACK(self, msg);

info.GetReturnValue().SetUndefined();

return;

}

// run

NewInstanceBaton *baton = new NewInstanceBaton(self, clazz, method, methodArgs, callback);

baton->run();

END_CALLBACK_FUNCTION("\"Constructor for class '"

<< className << "' called without a callback did you mean to use the Sync version?\"");

}

NAN_METHOD(Java::newInstanceSync) {

Nan::HandleScope scope;

Java *self = Nan::ObjectWrap::Unwrap<Java>(info.This());

v8::Local<v8::Value> ensureJvmResults = self->ensureJvm();

if (!ensureJvmResults->IsNull()) {

info.GetReturnValue().Set(ensureJvmResults);

return;

}

JNIEnv *env = self->getJavaEnv();

JavaScope javaScope(env);

int argsStart = 0;

int argsEnd = info.Length();

// arguments

ARGS_FRONT_CLASSNAME();

// find class

jclass clazz = javaFindClass(env, className);

if (clazz == NULL) {

std::ostringstream errStr;

errStr << "Could not create class " << className.c_str();

return Nan::ThrowError(javaExceptionToV8(self, env, errStr.str()));

}

// find method

jobjectArray methodArgs = v8ToJava(env, info, argsStart, argsEnd);

jobject method = javaFindConstructor(env, clazz, methodArgs);

if (method == NULL) {

std::string msg = methodNotFoundToString(env, clazz, className, true, info, argsStart, argsEnd);

return Nan::ThrowError(javaExceptionToV8(self, env, msg));

}

// run

v8::Local<v8::Value> callback = Nan::Null();

NewInstanceBaton *baton = new NewInstanceBaton(self, clazz, method, methodArgs, callback);

v8::Local<v8::Value> result = baton->runSync();

delete baton;

if (result->IsNativeError()) {

return Nan::ThrowError(result);

}

info.GetReturnValue().Set(result);

}

NAN_METHOD(Java::newProxy) {

Nan::HandleScope scope;

Java *self = Nan::ObjectWrap::Unwrap<Java>(info.This());

v8::Local<v8::Value> ensureJvmResults = self->ensureJvm();

if (!ensureJvmResults->IsNull()) {

info.GetReturnValue().Set(ensureJvmResults);

return;

}

JNIEnv *env = self->getJavaEnv();

JavaScope javaScope(env);

int argsStart = 0;

ARGS_FRONT_STRING(interfaceName);

ARGS_FRONT_OBJECT(functions);

DynamicProxyData *dynamicProxyData = new DynamicProxyData();

dynamicProxyData->markerStart = DYNAMIC_PROXY_DATA_MARKER_START;

dynamicProxyData->markerEnd = DYNAMIC_PROXY_DATA_MARKER_END;

dynamicProxyData->java = self;

dynamicProxyData->interfaceName = interfaceName;

dynamicProxyData->functions.Reset(functions);

// find NodeDynamicProxyClass

std::string className = "node.NodeDynamicProxyClass";

jclass clazz = javaFindClass(env, className);

if (clazz == NULL) {

std::ostringstream errStr;

errStr << "Could not create class node/NodeDynamicProxyClass";

delete dynamicProxyData;

return Nan::ThrowError(javaExceptionToV8(self, env, errStr.str()));

}

// find constructor

jclass objectClazz = env->FindClass("java/lang/Object");

jobjectArray methodArgs = env->NewObjectArray(2, objectClazz, NULL);

env->SetObjectArrayElement(methodArgs, 0,

v8ToJava(env, Nan::New<v8::String>(s_nativeBindingLocation.c_str()).ToLocalChecked()));

env->SetObjectArrayElement(methodArgs, 1, longToJavaLongObj(env, (jlong)dynamicProxyData));

jobject method = javaFindConstructor(env, clazz, methodArgs);

if (method == NULL) {

std::ostringstream errStr;

errStr << "Could not find constructor for class node/NodeDynamicProxyClass";

return Nan::ThrowError(javaExceptionToV8(self, env, errStr.str()));

}

// create the NodeDynamicProxyClass

jclass constructorClazz = env->FindClass("java/lang/reflect/Constructor");

jmethodID constructor_newInstance =

env->GetMethodID(constructorClazz, "newInstance", "([Ljava/lang/Object;)Ljava/lang/Object;");

// printf("invoke: %s\n", javaMethodCallToString(env, m_method, constructor_newInstance, m_args).c_str());

// run constructor

jobject dynamicProxy = env->CallObjectMethod(method, constructor_newInstance, methodArgs);

if (env->ExceptionCheck()) {

std::ostringstream errStr;

errStr << "Error creating class";

return Nan::ThrowError(javaExceptionToV8(self, env, errStr.str()));

}

jclass dynamicInterface = javaFindClass(env, interfaceName);

if (dynamicInterface == NULL) {

std::ostringstream errStr;

errStr << "Could not find interface ";

errStr << interfaceName;

return Nan::ThrowError(javaExceptionToV8(self, env, errStr.str()));

}

jclass classClazz = env->FindClass("java/lang/Class");

jobjectArray classArray = env->NewObjectArray(1, classClazz, NULL);

if (classArray == NULL) {

std::ostringstream errStr;

errStr << "Could not create class array for Proxy";

return Nan::ThrowError(javaExceptionToV8(self, env, errStr.str()));

}

env->SetObjectArrayElement(classArray, 0, dynamicInterface);

jmethodID class_getClassLoader = env->GetMethodID(classClazz, "getClassLoader", "()Ljava/lang/ClassLoader;");

jobject classLoader = env->CallObjectMethod(dynamicInterface, class_getClassLoader);

assertNoException(env);

if (classLoader == NULL) {

jclass objectClazz = env->FindClass("java/lang/Object");

jmethodID object_getClass = env->GetMethodID(objectClazz, "getClass", "()Ljava/lang/Class;");

jobject jobjClass = env->CallObjectMethod(dynamicProxy, object_getClass);

checkJavaException(env);

classLoader = env->CallObjectMethod(jobjClass, class_getClassLoader);

checkJavaException(env);

}

if (classLoader == NULL) {

std::ostringstream errStr;

errStr << "Could not get classloader for Proxy";

return Nan::ThrowError(javaExceptionToV8(self, env, errStr.str()));

}

// create proxy instance

jclass proxyClass = env->FindClass("java/lang/reflect/Proxy");

jmethodID proxy_newProxyInstance = env->GetStaticMethodID(

proxyClass, "newProxyInstance",

"(Ljava/lang/ClassLoader;[Ljava/lang/Class;Ljava/lang/reflect/InvocationHandler;)Ljava/lang/Object;");

jobject proxyInstance =

env->CallStaticObjectMethod(proxyClass, proxy_newProxyInstance, classLoader, classArray, dynamicProxy);

if (env->ExceptionCheck()) {

std::ostringstream errStr;

errStr << "Error creating java.lang.reflect.Proxy";

return Nan::ThrowError(javaExceptionToV8(self, env, errStr.str()));

}

v8::Local<v8::Value> result = javaToV8(self, env, proxyInstance, dynamicProxyData);

dynamicProxyData->jsObject.Reset(result);

info.GetReturnValue().Set(result);

}

NAN_METHOD(Java::callStaticMethod) {

Nan::HandleScope scope;

Java *self = Nan::ObjectWrap::Unwrap<Java>(info.This());

v8::Local<v8::Value> ensureJvmResults = self->ensureJvm();

if (!ensureJvmResults->IsNull()) {

info.GetReturnValue().Set(ensureJvmResults);

return;

}

JNIEnv *env = self->getJavaEnv();

JavaScope javaScope(env);

int argsStart = 0;

int argsEnd = info.Length();

// arguments

ARGS_FRONT_CLASSNAME();

ARGS_FRONT_STRING(methodName);

ARGS_BACK_CALLBACK();

// find class

jclass clazz = javaFindClass(env, className);

if (clazz == NULL) {

EXCEPTION_CALL_CALLBACK(self, "Could not create class " << className.c_str());

info.GetReturnValue().SetUndefined();

return;

}

// find method

jobjectArray methodArgs = v8ToJava(env, info, argsStart, argsEnd);

jobject method = javaFindMethod(env, clazz, methodName, methodArgs);

if (method == NULL) {

std::string msg = methodNotFoundToString(env, clazz, methodName, false, info, argsStart, argsEnd);

EXCEPTION_CALL_CALLBACK(self, msg);

info.GetReturnValue().SetUndefined();

return;

}

// run

StaticMethodCallBaton *baton = new StaticMethodCallBaton(self, clazz, method, methodArgs, callback);

baton->run();

END_CALLBACK_FUNCTION("\"Static method '" << methodName

<< "' called without a callback did you mean to use the Sync version?\"");

}

NAN_METHOD(Java::callStaticMethodSync) {

Nan::HandleScope scope;

Java *self = Nan::ObjectWrap::Unwrap<Java>(info.This());

v8::Local<v8::Value> ensureJvmResults = self->ensureJvm();

if (!ensureJvmResults->IsNull()) {

info.GetReturnValue().Set(ensureJvmResults);

return;

}

JNIEnv *env = self->getJavaEnv();

JavaScope javaScope(env);

int argsStart = 0;

int argsEnd = info.Length();

// arguments

ARGS_FRONT_CLASSNAME();

ARGS_FRONT_STRING(methodName);

// find class

jclass clazz = javaFindClass(env, className);

if (clazz == NULL) {

std::ostringstream errStr;

errStr << "Could not create class " << className.c_str();

return Nan::ThrowError(javaExceptionToV8(self, env, errStr.str()));

}

// find method

jobjectArray methodArgs = v8ToJava(env, info, argsStart, argsEnd);

jobject method = javaFindMethod(env, clazz, methodName, methodArgs);

if (method == NULL) {

std::string msg = methodNotFoundToString(env, clazz, methodName, false, info, argsStart, argsEnd);

return Nan::ThrowError(javaExceptionToV8(self, env, msg));

}

// run

v8::Local<v8::Value> callback = Nan::Null();

StaticMethodCallBaton *baton = new StaticMethodCallBaton(self, clazz, method, methodArgs, callback);

v8::Local<v8::Value> result = baton->runSync();

delete baton;

if (result->IsNativeError()) {

Nan::ThrowError(result);

return;

}

info.GetReturnValue().Set(result);

}

NAN_METHOD(Java::callMethodSync) {

Nan::HandleScope scope;

Java *self = Nan::ObjectWrap::Unwrap<Java>(info.This());

v8::Local<v8::Value> ensureJvmResults = self->ensureJvm();

if (!ensureJvmResults->IsNull()) {

info.GetReturnValue().Set(ensureJvmResults);

return;

}

JNIEnv *env = self->getJavaEnv();

JavaScope javaScope(env);

int argsStart = 0;

int argsEnd = info.Length();

// arguments

ARGS_FRONT_OBJECT(instanceObj);

ARGS_FRONT_STRING(methodName);

JavaObject *javaObj = Nan::ObjectWrap::Unwrap<JavaObject>(instanceObj);

// find method

jclass clazz = javaObj->getClass();

jobjectArray methodArgs = v8ToJava(env, info, argsStart, argsEnd);

jobject method = javaFindMethod(env, clazz, methodName, methodArgs);

if (method == NULL) {

std::string msg = methodNotFoundToString(env, clazz, methodName, false, info, argsStart, argsEnd);

return Nan::ThrowError(javaExceptionToV8(self, env, msg));

}

// run

v8::Local<v8::Value> callback = Nan::Null();

InstanceMethodCallBaton *baton = new InstanceMethodCallBaton(self, javaObj, method, methodArgs, callback);

v8::Local<v8::Value> result = baton->runSync();

delete baton;

if (result->IsNativeError()) {

return Nan::ThrowError(result);

}

info.GetReturnValue().Set(result);

}

NAN_METHOD(Java::callMethod) {

Nan::HandleScope scope;

Java *self = Nan::ObjectWrap::Unwrap<Java>(info.This());

v8::Local<v8::Value> ensureJvmResults = self->ensureJvm();

if (!ensureJvmResults->IsNull()) {

info.GetReturnValue().Set(ensureJvmResults);

return;

}

JNIEnv *env = self->getJavaEnv();

JavaScope javaScope(env);

int argsStart = 0;

int argsEnd = info.Length();

// arguments

ARGS_FRONT_OBJECT(instanceObj);

ARGS_FRONT_STRING(methodName);

ARGS_BACK_CALLBACK();

JavaObject *javaObj = Nan::ObjectWrap::Unwrap<JavaObject>(instanceObj);

// find method

jclass clazz = javaObj->getClass();

jobjectArray methodArgs = v8ToJava(env, info, argsStart, argsEnd);

jobject method = javaFindMethod(env, clazz, methodName, methodArgs);

if (method == NULL) {

std::string msg = methodNotFoundToString(env, clazz, methodName, false, info, argsStart, argsEnd);

EXCEPTION_CALL_CALLBACK(self, msg);

info.GetReturnValue().SetUndefined();

return;

}

// run

InstanceMethodCallBaton *baton = new InstanceMethodCallBaton(self, javaObj, method, methodArgs, callback);

baton->run();

END_CALLBACK_FUNCTION("\"method '" << methodName

<< "' called without a callback did you mean to use the Sync version?\"");

}

NAN_METHOD(Java::findClassSync) {

Nan::HandleScope scope;

Java *self = Nan::ObjectWrap::Unwrap<Java>(info.This());

v8::Local<v8::Value> ensureJvmResults = self->ensureJvm();

if (!ensureJvmResults->IsNull()) {

info.GetReturnValue().Set(ensureJvmResults);

return;

}

JNIEnv *env = self->getJavaEnv();

JavaScope javaScope(env);

int argsStart = 0;

// arguments

ARGS_FRONT_CLASSNAME();

// find class

jclass clazz = javaFindClass(env, className);

if (clazz == NULL) {

std::ostringstream errStr;

errStr << "Could not create class " << className.c_str();

return Nan::ThrowError(javaExceptionToV8(self, env, errStr.str()));

}

// run

v8::Local<v8::Value> result = javaToV8(self, env, clazz);

info.GetReturnValue().Set(result);

}

NAN_METHOD(Java::newArray) {

Nan::HandleScope scope;

Java *self = Nan::ObjectWrap::Unwrap<Java>(info.This());

v8::Local<v8::Value> ensureJvmResults = self->ensureJvm();

if (!ensureJvmResults->IsNull()) {

info.GetReturnValue().Set(ensureJvmResults);

return;

}

JNIEnv *env = self->getJavaEnv();

JavaScope javaScope(env);

int argsStart = 0;

// arguments

ARGS_FRONT_CLASSNAME();

// argument - array

if (info.Length() < argsStart + 1 || !info[argsStart]->IsArray()) {

std::ostringstream errStr;

errStr << "Argument " << (argsStart + 1) << " must be an array";

return Nan::ThrowError(Nan::TypeError(errStr.str().c_str()));

}

v8::Local<v8::Array> arrayObj = v8::Local<v8::Array>::Cast(info[argsStart]);

// find class and method

jarray results;

if (strcmp(className.c_str(), "byte") == 0) {

results = env->NewByteArray(arrayObj->Length());

for (uint32_t i = 0; i < arrayObj->Length(); i++) {

v8::Local<v8::Value> item = arrayObj->Get(Nan::GetCurrentContext(), i).ToLocalChecked();

jobject val = v8ToJava(env, item);

jclass byteClazz = env->FindClass("java/lang/Byte");

jmethodID byte_byteValue = env->GetMethodID(byteClazz, "byteValue", "()B");

jbyte byteValues[1];

byteValues[0] = env->CallByteMethod(val, byte_byteValue);

assertNoException(env);

env->SetByteArrayRegion((jbyteArray)results, i, 1, byteValues);

}

}

else if (strcmp(className.c_str(), "char") == 0) {

results = env->NewCharArray(arrayObj->Length());

for (uint32_t i = 0; i < arrayObj->Length(); i++) {

v8::Local<v8::Value> item = arrayObj->Get(Nan::GetCurrentContext(), i).ToLocalChecked();

jobject val = v8ToJava(env, item);

jclass stringClazz = env->FindClass("java/lang/String");

jmethodID string_charAt = env->GetMethodID(stringClazz, "charAt", "(I)C");

jchar itemValues[1];

itemValues[0] = env->CallCharMethod(val, string_charAt, 0);

checkJavaException(env);

env->SetCharArrayRegion((jcharArray)results, i, 1, itemValues);

}

}

else if (strcmp(className.c_str(), "short") == 0) {

results = env->NewShortArray(arrayObj->Length());

for (uint32_t i = 0; i < arrayObj->Length(); i++) {

v8::Local<v8::Value> item = arrayObj->Get(Nan::GetCurrentContext(), i).ToLocalChecked();

jobject val = v8ToJava(env, item);

jclass shortClazz = env->FindClass("java/lang/Short");

jmethodID short_shortValue = env->GetMethodID(shortClazz, "shortValue", "()S");

jshort shortValues[1];

shortValues[0] = env->CallShortMethod(val, short_shortValue);

assertNoException(env);

env->SetShortArrayRegion((jshortArray)results, i, 1, shortValues);

}

}

else if (strcmp(className.c_str(), "double") == 0) {

results = env->NewDoubleArray(arrayObj->Length());

for (uint32_t i = 0; i < arrayObj->Length(); i++) {

v8::Local<v8::Value> item = arrayObj->Get(Nan::GetCurrentContext(), i).ToLocalChecked();

jobject val = v8ToJava(env, item);

jclass doubleClazz = env->FindClass("java/lang/Double");

jmethodID double_doubleValue = env->GetMethodID(doubleClazz, "doubleValue", "()D");

jdouble doubleValues[1];

doubleValues[0] = env->CallDoubleMethod(val, double_doubleValue);

assertNoException(env);

env->SetDoubleArrayRegion((jdoubleArray)results, i, 1, doubleValues);

}

}

else if (strcmp(className.c_str(), "int") == 0) {

results = env->NewIntArray(arrayObj->Length());

for (uint32_t i = 0; i < arrayObj->Length(); i++) {

v8::Local<v8::Value> item = arrayObj->Get(Nan::GetCurrentContext(), i).ToLocalChecked();

jobject val = v8ToJava(env, item);

jclass integerClazz = env->FindClass("java/lang/Integer");

jmethodID integer_intValue = env->GetMethodID(integerClazz, "intValue", "()I");

jint intValues[1];

intValues[0] = env->CallIntMethod(val, integer_intValue);

assertNoException(env);

env->SetIntArrayRegion((jintArray)results, i, 1, intValues);

}

}

else if (strcmp(className.c_str(), "float") == 0) {

results = env->NewFloatArray(arrayObj->Length());

for (uint32_t i = 0; i < arrayObj->Length(); i++) {

v8::Local<v8::Value> item = arrayObj->Get(Nan::GetCurrentContext(), i).ToLocalChecked();

jobject val = v8ToJava(env, item);

jclass floatClazz = env->FindClass("java/lang/Float");

jmethodID float_floatValue = env->GetMethodID(floatClazz, "floatValue", "()F");

jfloat floatValues[1];

floatValues[0] = env->CallFloatMethod(val, float_floatValue);

checkJavaException(env);

env->SetFloatArrayRegion((jfloatArray)results, i, 1, floatValues);

}

}

else if (strcmp(className.c_str(), "boolean") == 0) {

results = env->NewBooleanArray(arrayObj->Length());

for (uint32_t i = 0; i < arrayObj->Length(); i++) {

v8::Local<v8::Value> item = arrayObj->Get(Nan::GetCurrentContext(), i).ToLocalChecked();

jobject val = v8ToJava(env, item);

jclass booleanClazz = env->FindClass("java/lang/Boolean");

jmethodID boolean_booleanValue = env->GetMethodID(booleanClazz, "booleanValue", "()Z");

jboolean booleanValues[1];

booleanValues[0] = env->CallBooleanMethod(val, boolean_booleanValue);

checkJavaException(env);

env->SetBooleanArrayRegion((jbooleanArray)results, i, 1, booleanValues);

}

}

else {

jclass clazz = javaFindClass(env, className);

if (clazz == NULL) {

std::ostringstream errStr;

errStr << "Could not create class " << className.c_str();

return Nan::ThrowError(javaExceptionToV8(self, env, errStr.str()));

}

// create array

results = env->NewObjectArray(arrayObj->Length(), clazz, NULL);

for (uint32_t i = 0; i < arrayObj->Length(); i++) {

v8::Local<v8::Value> item = arrayObj->Get(Nan::GetCurrentContext(), i).ToLocalChecked();

jobject val = v8ToJava(env, item);

env->SetObjectArrayElement((jobjectArray)results, i, val);

if (env->ExceptionOccurred()) {

std::ostringstream errStr;

Nan::Utf8String valStr(item);

errStr << "Could not add item \"" << *valStr << "\" to array.";

return Nan::ThrowError(javaExceptionToV8(self, env, errStr.str()));

}

}

}

info.GetReturnValue().Set(JavaObject::New(self, results));

}

NAN_METHOD(Java::newByte) {

Nan::HandleScope scope;

Java *self = Nan::ObjectWrap::Unwrap<Java>(info.This());

v8::Local<v8::Value> ensureJvmResults = self->ensureJvm();

if (!ensureJvmResults->IsNull()) {

info.GetReturnValue().Set(ensureJvmResults);

return;

}

JNIEnv *env = self->getJavaEnv();

JavaScope javaScope(env);

if (info.Length() != 1) {

return Nan::ThrowError(Nan::TypeError("newByte only takes 1 argument"));

}

// argument - value

if (!info[0]->IsNumber()) {

return Nan::ThrowError(Nan::TypeError("Argument 1 must be a number"));

}

jbyte val = Nan::To<int32_t>(info[0]).FromJust();

jclass clazz = env->FindClass("java/lang/Byte");

jmethodID constructor = env->GetMethodID(clazz, "<init>", "(B)V");

jobject newObj = env->NewObject(clazz, constructor, val);

info.GetReturnValue().Set(JavaObject::New(self, newObj));

return;

}

NAN_METHOD(Java::newShort) {

Nan::HandleScope scope;

Java *self = Nan::ObjectWrap::Unwrap<Java>(info.This());

v8::Local<v8::Value> ensureJvmResults = self->ensureJvm();

if (!ensureJvmResults->IsNull()) {

info.GetReturnValue().Set(ensureJvmResults);

return;

}

JNIEnv *env = self->getJavaEnv();

JavaScope javaScope(env);

if (info.Length() != 1) {

return Nan::ThrowError(Nan::TypeError("newShort only takes 1 argument"));

}

// argument - value

if (!info[0]->IsNumber()) {

return Nan::ThrowError(Nan::TypeError("Argument 1 must be a number"));

}