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393 lines (321 loc) · 15.2 KB
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#include "javaObject.h"
#include "java.h"
#include "javaScope.h"
#include "utils.h"
#include <algorithm>
#include <sstream>
/*static*/ std::map<std::string, Nan::Persistent<v8::FunctionTemplate> *> JavaObject::sFunctionTemplates;
/*static*/ void JavaObject::Init(v8::Local<v8::Object> target) {}
/*static*/ v8::Local<v8::Object> JavaObject::New(Java *java, jobject obj) {
Nan::EscapableHandleScope scope;
JNIEnv *env = java->getJavaEnv();
JavaScope javaScope(env);
jclass objClazz = env->GetObjectClass(obj);
jclass classClazz = env->FindClass("java/lang/Class");
jmethodID class_getName = env->GetMethodID(classClazz, "getName", "()Ljava/lang/String;");
jobject classNameJava = env->CallObjectMethod(objClazz, class_getName);
checkJavaException(env);
std::string className = javaObjectToString(env, classNameJava);
std::replace(className.begin(), className.end(), '.', '_');
std::replace(className.begin(), className.end(), '$', '_');
std::replace(className.begin(), className.end(), '[', 'a');
className = "nodeJava_" + className;
v8::Local<v8::Function> promisify;
if (java->DoPromise()) {
v8::Local<v8::Value> promisifyValue =
java->handle()
->Get(Nan::GetCurrentContext(), Nan::New<v8::String>("promisify").ToLocalChecked())
.ToLocalChecked();
promisify = promisifyValue.As<v8::Function>();
}
v8::Local<v8::FunctionTemplate> funcTemplate;
if (sFunctionTemplates.find(className) != sFunctionTemplates.end()) {
// printf("existing className: %s\n", className.c_str());
funcTemplate = Nan::New(*sFunctionTemplates[className]);
} else {
// printf("create className: %s\n", className.c_str());
funcTemplate = Nan::New<v8::FunctionTemplate>();
funcTemplate->InstanceTemplate()->SetInternalFieldCount(1);
funcTemplate->SetClassName(Nan::New<v8::String>(className.c_str()).ToLocalChecked());
// copy methods to template
std::list<jobject> methods;
javaReflectionGetMethods(env, objClazz, &methods, false);
jclass methodClazz = env->FindClass("java/lang/reflect/Method");
jmethodID method_getName = env->GetMethodID(methodClazz, "getName", "()Ljava/lang/String;");
for (std::list<jobject>::iterator it = methods.begin(); it != methods.end(); ++it) {
jstring methodNameJava = (jstring)env->CallObjectMethod(*it, method_getName);
assertNoException(env);
std::string methodNameStr = javaToString(env, methodNameJava);
v8::Local<v8::String> baseMethodName = Nan::New<v8::String>(methodNameStr.c_str()).ToLocalChecked();
std::string methodNameAsyncStr = methodNameStr;
const char *methodNameAsync = methodNameAsyncStr.append(java->AsyncSuffix()).c_str();
v8::Local<v8::FunctionTemplate> methodCallTemplate = Nan::New<v8::FunctionTemplate>(methodCall, baseMethodName);
Nan::SetPrototypeTemplate(funcTemplate, methodNameAsync, methodCallTemplate);
std::string methodNameSyncStr = methodNameStr;
const char *methodNameSync = methodNameSyncStr.append(java->SyncSuffix()).c_str();
v8::Local<v8::FunctionTemplate> methodCallSyncTemplate =
Nan::New<v8::FunctionTemplate>(methodCallSync, baseMethodName);
Nan::SetPrototypeTemplate(funcTemplate, methodNameSync, methodCallSyncTemplate);
if (java->DoPromise()) {
v8::Local<v8::Object> recv = Nan::New<v8::Object>();
v8::Local<v8::Value> argv[] = {methodCallTemplate->GetFunction(Nan::GetCurrentContext()).ToLocalChecked()};
v8::Local<v8::Value> result = Nan::Call(promisify, recv, 1, argv).FromMaybe(v8::Local<v8::Value>());
if (!result->IsFunction()) {
fprintf(stderr, "Promisified result is not a function.\n");
assert(result->IsFunction());
}
v8::Local<v8::Function> promFunction = result.As<v8::Function>();
v8::Local<v8::FunctionTemplate> promFunctionTemplate =
Nan::New<v8::FunctionTemplate>(methodCallPromise, promFunction);
std::string methodNamePromiseStr = methodNameStr;
const char *methodNamePromise = methodNamePromiseStr.append(java->PromiseSuffix()).c_str();
Nan::SetPrototypeTemplate(funcTemplate, methodNamePromise, promFunctionTemplate);
}
}
// copy fields to template
std::list<jobject> fields;
javaReflectionGetFields(env, objClazz, &fields);
jclass fieldClazz = env->FindClass("java/lang/reflect/Field");
jmethodID field_getName = env->GetMethodID(fieldClazz, "getName", "()Ljava/lang/String;");
for (std::list<jobject>::iterator it = fields.begin(); it != fields.end(); ++it) {
jstring fieldNameJava = (jstring)env->CallObjectMethod(*it, field_getName);
checkJavaException(env);
std::string fieldNameStr = javaToString(env, fieldNameJava);
v8::Local<v8::String> fieldName = Nan::New<v8::String>(fieldNameStr.c_str()).ToLocalChecked();
Nan::SetAccessor(funcTemplate->InstanceTemplate(), fieldName, fieldGetter, fieldSetter);
}
// copy array methods to template
jmethodID class_isArray = env->GetMethodID(classClazz, "isArray", "()Z");
jboolean isArray = env->CallBooleanMethod(objClazz, class_isArray);
if (isArray) {
v8::Local<v8::String> fieldName = Nan::New<v8::String>("length").ToLocalChecked();
Nan::SetAccessor(funcTemplate->InstanceTemplate(), fieldName, fieldGetter, NULL);
Nan::SetIndexedPropertyHandler(funcTemplate->InstanceTemplate(), indexGetter);
}
Nan::Persistent<v8::FunctionTemplate> *persistentFuncTemplate = new Nan::Persistent<v8::FunctionTemplate>();
persistentFuncTemplate->Reset(funcTemplate);
sFunctionTemplates[className] = persistentFuncTemplate;
}
v8::Local<v8::Function> ctor = Nan::GetFunction(funcTemplate).ToLocalChecked();
v8::Local<v8::Object> javaObjectObj = Nan::NewInstance(ctor).ToLocalChecked();
SetHiddenValue(javaObjectObj, Nan::New<v8::String>(V8_HIDDEN_MARKER_JAVA_OBJECT).ToLocalChecked(),
Nan::New<v8::Boolean>(true));
JavaObject *self = new JavaObject(java, obj);
self->Wrap(javaObjectObj);
return scope.Escape(javaObjectObj);
}
JavaObject::JavaObject(Java *java, jobject obj) {
m_java = java;
JNIEnv *env = m_java->getJavaEnv();
m_obj = env->NewGlobalRef(obj);
m_class = (jclass)env->NewGlobalRef(env->GetObjectClass(obj));
}
JavaObject::~JavaObject() {
JNIEnv *env = m_java->getJavaEnv();
env->DeleteGlobalRef(m_obj);
env->DeleteGlobalRef(m_class);
}
NAN_METHOD(JavaObject::methodCall) {
Nan::HandleScope scope;
JavaObject *self = Nan::ObjectWrap::Unwrap<JavaObject>(info.This());
JNIEnv *env = self->m_java->getJavaEnv();
JavaScope javaScope(env);
Nan::Utf8String methodName(info.Data());
std::string methodNameStr = *methodName;
int argsStart = 0;
int argsEnd = info.Length();
// arguments
ARGS_BACK_CALLBACK();
if (!callbackProvided && methodNameStr == "toString") {
return methodCallSync(info);
}
jobjectArray methodArgs = v8ToJava(env, info, argsStart, argsEnd);
jobject method = javaFindMethod(env, self->m_class, methodNameStr, methodArgs);
if (method == NULL) {
std::string msg = methodNotFoundToString(env, self->m_class, methodNameStr, false, info, argsStart, argsEnd);
EXCEPTION_CALL_CALLBACK(self->m_java, msg);
info.GetReturnValue().SetUndefined();
return;
}
// run
InstanceMethodCallBaton *baton = new InstanceMethodCallBaton(self->m_java, self, method, methodArgs, callback);
baton->run();
END_CALLBACK_FUNCTION("\"Method '" << methodNameStr
<< "' called without a callback did you mean to use the Sync version?\"");
}
NAN_METHOD(JavaObject::methodCallSync) {
Nan::HandleScope scope;
JavaObject *self = Nan::ObjectWrap::Unwrap<JavaObject>(info.This());
JNIEnv *env = self->m_java->getJavaEnv();
JavaScope javaScope(env);
Nan::Utf8String methodName(info.Data());
std::string methodNameStr = *methodName;
int argsStart = 0;
int argsEnd = info.Length();
jobjectArray methodArgs = v8ToJava(env, info, argsStart, argsEnd);
jobject method = javaFindMethod(env, self->m_class, methodNameStr, methodArgs);
if (method == NULL) {
std::string msg = methodNotFoundToString(env, self->m_class, methodNameStr, false, info, argsStart, argsEnd);
v8::Local<v8::Value> ex = javaExceptionToV8(self->m_java, env, msg);
Nan::ThrowError(ex);
return;
}
// run
v8::Local<v8::Value> callback = Nan::Undefined();
InstanceMethodCallBaton *baton = new InstanceMethodCallBaton(self->m_java, self, 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(JavaObject::methodCallPromise) {
Nan::HandleScope scope;
v8::Local<v8::Function> fn = info.Data().As<v8::Function>();
v8::Local<v8::Value> *argv = new v8::Local<v8::Value>[info.Length()];
for (int i = 0; i < info.Length(); i++) {
argv[i] = info[i];
}
v8::MaybeLocal<v8::Value> result = Nan::Call(fn, info.This(), info.Length(), argv);
delete[] argv;
if (!result.IsEmpty()) {
info.GetReturnValue().Set(result.ToLocalChecked());
}
}
NAN_GETTER(JavaObject::fieldGetter) {
Nan::HandleScope scope;
JavaObject *self = Nan::ObjectWrap::Unwrap<JavaObject>(info.This());
JNIEnv *env = self->m_java->getJavaEnv();
JavaScope javaScope(env);
Nan::Utf8String propertyCStr(property);
std::string propertyStr = *propertyCStr;
jobject field = javaFindField(env, self->m_class, propertyStr);
if (field == NULL) {
if (propertyStr == "length") {
jclass classClazz = env->FindClass("java/lang/Class");
jmethodID class_isArray = env->GetMethodID(classClazz, "isArray", "()Z");
jboolean isArray = env->CallBooleanMethod(self->m_class, class_isArray);
if (isArray) {
jclass arrayClass = env->FindClass("java/lang/reflect/Array");
jmethodID array_getLength = env->GetStaticMethodID(arrayClass, "getLength", "(Ljava/lang/Object;)I");
jint arrayLength = env->CallStaticIntMethod(arrayClass, array_getLength, self->m_obj);
assertNoException(env);
info.GetReturnValue().Set(Nan::New<v8::Int32>(static_cast<int32_t>(arrayLength)));
return;
}
}
std::ostringstream errStr;
errStr << "Could not find field \"" << propertyStr << "\" for get";
v8::Local<v8::Value> ex = javaExceptionToV8(self->m_java, env, errStr.str());
Nan::ThrowError(ex);
return;
}
jclass fieldClazz = env->FindClass("java/lang/reflect/Field");
jmethodID field_get = env->GetMethodID(fieldClazz, "get", "(Ljava/lang/Object;)Ljava/lang/Object;");
// get field value
jobject val = env->CallObjectMethod(field, field_get, self->m_obj);
if (env->ExceptionOccurred()) {
std::ostringstream errStr;
errStr << "Could not get field " << propertyStr;
v8::Local<v8::Value> ex = javaExceptionToV8(self->m_java, env, errStr.str());
Nan::ThrowError(ex);
return;
}
v8::Local<v8::Value> result = javaToV8(self->m_java, env, val);
info.GetReturnValue().Set(result);
}
NAN_SETTER(JavaObject::fieldSetter) {
Nan::HandleScope scope;
JavaObject *self = Nan::ObjectWrap::Unwrap<JavaObject>(info.This());
JNIEnv *env = self->m_java->getJavaEnv();
JavaScope javaScope(env);
jobject newValue = v8ToJava(env, value);
Nan::Utf8String propertyCStr(property);
std::string propertyStr = *propertyCStr;
jobject field = javaFindField(env, self->m_class, propertyStr);
if (field == NULL) {
std::ostringstream errStr;
errStr << "Could not find field \"" << propertyStr << "\" for set";
v8::Local<v8::Value> error = javaExceptionToV8(self->m_java, env, errStr.str());
Nan::ThrowError(error);
return;
}
jclass fieldClazz = env->FindClass("java/lang/reflect/Field");
jmethodID field_set = env->GetMethodID(fieldClazz, "set", "(Ljava/lang/Object;Ljava/lang/Object;)V");
// printf("newValue: %s\n", javaObjectToString(env, newValue).c_str());
// set field value
env->CallObjectMethod(field, field_set, self->m_obj, newValue);
if (env->ExceptionOccurred()) {
std::ostringstream errStr;
errStr << "Could not set field " << propertyStr;
v8::Local<v8::Value> error = javaExceptionToV8(self->m_java, env, errStr.str());
Nan::ThrowError(error);
return;
}
}
NAN_INDEX_GETTER(JavaObject::indexGetter) {
Nan::HandleScope scope;
JavaObject *self = Nan::ObjectWrap::Unwrap<JavaObject>(info.This());
JNIEnv *env = self->m_java->getJavaEnv();
JavaScope javaScope(env);
jclass arrayClass = env->FindClass("java/lang/reflect/Array");
jmethodID array_getLength = env->GetStaticMethodID(arrayClass, "getLength", "(Ljava/lang/Object;)I");
jint arrayLength = env->CallStaticIntMethod(arrayClass, array_getLength, self->m_obj);
assertNoException(env);
if ((jint)index >= arrayLength) {
info.GetReturnValue().SetUndefined();
RETURN_INTERCEPTED_YES;
}
jmethodID array_get = env->GetStaticMethodID(arrayClass, "get", "(Ljava/lang/Object;I)Ljava/lang/Object;");
jobject item = env->CallStaticObjectMethod(arrayClass, array_get, self->m_obj, index);
assertNoException(env);
v8::Local<v8::Value> result = javaToV8(self->m_java, env, item);
info.GetReturnValue().Set(result);
RETURN_INTERCEPTED_YES;
}
/*static*/ Nan::Persistent<v8::FunctionTemplate> JavaProxyObject::s_proxyCt;
/*static*/ void JavaProxyObject::init() {
v8::Local<v8::FunctionTemplate> t = Nan::New<v8::FunctionTemplate>();
s_proxyCt.Reset(t);
t->InstanceTemplate()->SetInternalFieldCount(1);
t->SetClassName(Nan::New<v8::String>("NodeDynamicProxy").ToLocalChecked());
Nan::SetPrototypeTemplate(t, "unref", Nan::New<v8::FunctionTemplate>(doUnref));
v8::Local<v8::String> fieldName = Nan::New<v8::String>("invocationHandler").ToLocalChecked();
Nan::SetAccessor(t->InstanceTemplate(), fieldName, invocationHandlerGetter);
}
v8::Local<v8::Object> JavaProxyObject::New(Java *java, jobject obj, DynamicProxyData *dynamicProxyData) {
Nan::EscapableHandleScope scope;
v8::Local<v8::Function> ctor = Nan::New(s_proxyCt)->GetFunction(Nan::GetCurrentContext()).ToLocalChecked();
v8::Local<v8::Object> javaObjectObj = Nan::NewInstance(ctor).ToLocalChecked();
SetHiddenValue(javaObjectObj, Nan::New<v8::String>(V8_HIDDEN_MARKER_JAVA_OBJECT).ToLocalChecked(),
Nan::New<v8::Boolean>(true));
JavaProxyObject *self = new JavaProxyObject(java, obj, dynamicProxyData);
self->Wrap(javaObjectObj);
return scope.Escape(javaObjectObj);
}
JavaProxyObject::JavaProxyObject(Java *java, jobject obj, DynamicProxyData *dynamicProxyData) : JavaObject(java, obj) {
m_dynamicProxyData = dynamicProxyData;
}
JavaProxyObject::~JavaProxyObject() {
if (dynamicProxyDataVerify(m_dynamicProxyData)) {
unref(m_dynamicProxyData);
}
}
NAN_METHOD(JavaProxyObject::doUnref) {
JavaProxyObject *self = Nan::ObjectWrap::Unwrap<JavaProxyObject>(info.This());
if (dynamicProxyDataVerify(self->m_dynamicProxyData)) {
unref(self->m_dynamicProxyData);
}
info.GetReturnValue().SetUndefined();
}
NAN_GETTER(JavaProxyObject::invocationHandlerGetter) {
Nan::HandleScope scope;
JavaProxyObject *self = Nan::ObjectWrap::Unwrap<JavaProxyObject>(info.This());
if (!dynamicProxyDataVerify(self->m_dynamicProxyData)) {
Nan::ThrowError("dynamicProxyData has been destroyed or corrupted");
return;
}
info.GetReturnValue().Set(Nan::New(self->m_dynamicProxyData->functions));
}
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