Local<Value> FieldAccessor::GetJavaField(Isolate *isolate, const Local<Object>& target, FieldCallbackData *fieldData)
{
JEnv env;
EscapableHandleScope handleScope(isolate);
auto runtime = Runtime::GetRuntime(isolate);
auto objectManager = runtime->GetObjectManager();
Local<Value> fieldResult;
JniLocalRef targetJavaObject;
const auto& fieldTypeName = fieldData->signature;
auto isStatic = fieldData->isStatic;
auto isPrimitiveType = fieldTypeName.size() == 1;
auto isFieldArray = fieldTypeName[0] == '[';
if (fieldData->fid == nullptr)
{
auto fieldJniSig = isPrimitiveType
? fieldTypeName
:
(isFieldArray
? fieldTypeName
:
("L" + fieldTypeName + ";"));
if (isStatic)
{
fieldData->clazz = env.FindClass(fieldData->declaringType);
fieldData->fid = env.GetStaticFieldID(fieldData->clazz, fieldData->name, fieldJniSig);
}
else
{
fieldData->clazz = env.FindClass(fieldData->declaringType);
fieldData->fid = env.GetFieldID(fieldData->clazz, fieldData->name, fieldJniSig);
}
}
if (!isStatic)
{
targetJavaObject = objectManager->GetJavaObjectByJsObject(target);
if (targetJavaObject.IsNull())
{
stringstream ss;
ss << "Cannot access property '" << fieldData->name << "' because there is no corresponding Java object";
throw NativeScriptException(ss.str());
}
}
auto fieldId = fieldData->fid;
auto clazz = fieldData->clazz;
if (isPrimitiveType)
{
switch (fieldTypeName[0])
{
case 'Z': //bool
{
jboolean result;
if (isStatic)
{
result = env.GetStaticBooleanField(clazz, fieldId);
}
else
{
result = env.GetBooleanField(targetJavaObject, fieldId);
}
fieldResult = Boolean::New(isolate, (result == JNI_TRUE));
break;
}
case 'B': //byte
{
jbyte result;
if (isStatic)
{
result = env.GetStaticByteField(clazz, fieldId);
}
else
{
result = env.GetByteField(targetJavaObject, fieldId);
}
fieldResult = handleScope.Escape(Int32::New(isolate, result));
break;
}
case 'C': //char
{
jchar result;
if (isStatic)
{
result = env.GetStaticCharField(clazz, fieldId);
}
else
{
result = env.GetCharField(targetJavaObject, fieldId);
}
JniLocalRef str(env.NewString(&result, 1));
jboolean bol = true;
const char* resP = env.GetStringUTFChars(str, &bol);
fieldResult = handleScope.Escape(ConvertToV8String(resP, 1));
env.ReleaseStringUTFChars(str, resP);
break;
}
case 'S': //short
{
jshort result;
if (isStatic)
{
result = env.GetStaticShortField(clazz, fieldId);
}
else
{
result = env.GetShortField(targetJavaObject, fieldId);
}
fieldResult = handleScope.Escape(Int32::New(isolate, result));
break;
}
case 'I': //int
{
jint result;
if (isStatic)
{
result = env.GetStaticIntField(clazz, fieldId);
}
else
{
result = env.GetIntField(targetJavaObject, fieldId);
}
fieldResult = handleScope.Escape(Int32::New(isolate, result));
break;
}
case 'J': //long
{
jlong result;
if (isStatic)
{
result = env.GetStaticLongField(clazz, fieldId);
}
else
{
result = env.GetLongField(targetJavaObject, fieldId);
}
fieldResult = handleScope.Escape(ArgConverter::ConvertFromJavaLong(isolate, result));
break;
}
case 'F': //float
{
jfloat result;
if (isStatic)
{
result = env.GetStaticFloatField(clazz, fieldId);
}
else
{
result = env.GetFloatField(targetJavaObject, fieldId);
}
fieldResult = handleScope.Escape(Number::New(isolate, (double) result));
break;
}
case 'D': //double
{
jdouble result;
if (isStatic)
{
result = env.GetStaticDoubleField(clazz, fieldId);
}
else
{
result = env.GetDoubleField(targetJavaObject, fieldId);
}
fieldResult = handleScope.Escape(Number::New(isolate, result));
break;
}
default:
{
stringstream ss;
ss << "(InternalError): in FieldAccessor::GetJavaField: Unknown field type: '" << fieldTypeName[0] << "'";
throw NativeScriptException(ss.str());
}
}
}
else
{
jobject result;
if (isStatic)
{
result = env.GetStaticObjectField(clazz, fieldId);
}
else
{
result = env.GetObjectField(targetJavaObject, fieldId);
}
if (result != nullptr)
{
bool isString = fieldTypeName == "java/lang/String";
if (isString)
{
auto resultV8Value = ArgConverter::jstringToV8String((jstring) result);
fieldResult = handleScope.Escape(resultV8Value);
}
else
{
int javaObjectID = objectManager->GetOrCreateObjectId(result);
auto objectResult = objectManager->GetJsObjectByJavaObject(javaObjectID);
if (objectResult.IsEmpty())
{
objectResult = objectManager->CreateJSWrapper(javaObjectID, fieldTypeName, result);
}
fieldResult = handleScope.Escape(objectResult);
}
env.DeleteLocalRef(result);
}
else
{
fieldResult = handleScope.Escape(Null(isolate));
}
}
return fieldResult;
}
void FieldAccessor::SetJavaField(Isolate *isolate, const Local<Object>& target, const Local<Value>& value, FieldCallbackData *fieldData)
{
JEnv env;
HandleScope handleScope(isolate);
auto runtime = Runtime::GetRuntime(isolate);
auto objectManager = runtime->GetObjectManager();
JniLocalRef targetJavaObject;
const auto& fieldTypeName = fieldData->signature;
auto isStatic = fieldData->isStatic;
auto isPrimitiveType = fieldTypeName.size() == 1;
auto isFieldArray = fieldTypeName[0] == '[';
if (fieldData->fid == nullptr)
{
auto fieldJniSig = isPrimitiveType
? fieldTypeName
:
(isFieldArray
? fieldTypeName
:
("L" + fieldTypeName + ";"));
if (isStatic)
{
fieldData->clazz = env.FindClass(fieldData->declaringType);
assert(fieldData->clazz != nullptr);
fieldData->fid = env.GetStaticFieldID(fieldData->clazz, fieldData->name, fieldJniSig);
assert(fieldData->fid != nullptr);
}
else
{
fieldData->clazz = env.FindClass(fieldData->declaringType);
assert(fieldData->clazz != nullptr);
fieldData->fid = env.GetFieldID(fieldData->clazz, fieldData->name, fieldJniSig);
assert(fieldData->fid != nullptr);
}
}
if (!isStatic)
{
targetJavaObject = objectManager->GetJavaObjectByJsObject(target);
if (targetJavaObject.IsNull())
{
stringstream ss;
ss << "Cannot access property '" << fieldData->name << "' because there is no corresponding Java object";
throw NativeScriptException(ss.str());
}
}
auto fieldId = fieldData->fid;
auto clazz = fieldData->clazz;
if (isPrimitiveType)
{
switch (fieldTypeName[0])
{
case 'Z': //bool
{
//TODO: validate value is a boolean before calling
if (isStatic)
{
env.SetStaticBooleanField(clazz, fieldId, value->BooleanValue());
}
else
{
env.SetBooleanField(targetJavaObject, fieldId, value->BooleanValue());
}
break;
}
case 'B': //byte
{
//TODO: validate value is a byte before calling
if (isStatic)
{
env.SetStaticByteField(clazz, fieldId, value->Int32Value());
}
else
{
env.SetByteField(targetJavaObject, fieldId, value->Int32Value());
}
break;
}
case 'C': //char
{
//TODO: validate value is a single char
String::Utf8Value stringValue(value->ToString());
JniLocalRef value(env.NewStringUTF(*stringValue));
const char* chars = env.GetStringUTFChars(value, 0);
if (isStatic)
{
env.SetStaticCharField(clazz, fieldId, chars[0]);
}
else
{
env.SetCharField(targetJavaObject, fieldId, chars[0]);
}
env.ReleaseStringUTFChars(value, chars);
break;
}
case 'S': //short
{
//TODO: validate value is a short before calling
if (isStatic)
{
env.SetStaticShortField(clazz, fieldId, value->Int32Value());
}
else
{
env.SetShortField(targetJavaObject, fieldId, value->Int32Value());
}
break;
}
case 'I': //int
{
//TODO: validate value is a int before calling
if (isStatic)
{
env.SetStaticIntField(clazz, fieldId, value->Int32Value());
}
else
{
env.SetIntField(targetJavaObject, fieldId, value->Int32Value());
}
break;
}
case 'J': //long
{
jlong longValue = static_cast<jlong>(ArgConverter::ConvertToJavaLong(value));
if (isStatic)
{
env.SetStaticLongField(clazz, fieldId, longValue);
}
else
{
env.SetLongField(targetJavaObject, fieldId, longValue);
}
break;
}
case 'F': //float
{
if (isStatic)
{
env.SetStaticFloatField(clazz, fieldId, static_cast<jfloat>(value->NumberValue()));
}
else
{
env.SetFloatField(targetJavaObject, fieldId, static_cast<jfloat>(value->NumberValue()));
}
break;
}
case 'D': //double
{
if (isStatic)
{
env.SetStaticDoubleField(clazz, fieldId, value->NumberValue());
}
else
{
env.SetDoubleField(targetJavaObject, fieldId, value->NumberValue());
}
break;
}
default:
{
stringstream ss;
ss << "(InternalError): in FieldAccessor::SetJavaField: Unknown field type: '" << fieldTypeName[0] << "'";
throw NativeScriptException(ss.str());
}
}
}
else
{
bool isString = fieldTypeName == "java/lang/String";
JniLocalRef result;
if (!value->IsNull())
{
if (isString)
{
//TODO: validate valie is a string;
result = ConvertToJavaString(value);
}
else
{
auto objectWithHiddenID = value->ToObject();
result = objectManager->GetJavaObjectByJsObject(objectWithHiddenID);
}
}
if (isStatic)
{
env.SetStaticObjectField(clazz, fieldId, result);
}
else
{
env.SetObjectField(targetJavaObject, fieldId, result);
}
}
}
void FieldAccessor::SetJavaField(const Local<Object>& target, const Local<Value>& value, FieldCallbackData *fieldData)
{
JEnv env;
auto isolate = Isolate::GetCurrent();
HandleScope handleScope(isolate);
jweak targetJavaObject;
const auto& fieldTypeName = fieldData->signature;
auto isStatic = fieldData->isStatic;
auto isPrimitiveType = fieldTypeName.size() == 1;
auto isFieldArray = fieldTypeName[0] == '[';
if (fieldData->fid == nullptr)
{
auto fieldJniSig = isPrimitiveType
? fieldTypeName
: (isFieldArray
? fieldTypeName
: ("L" + fieldTypeName + ";"));
if (isStatic)
{
fieldData->clazz = env.FindClass(fieldData->declaringType);
assert(fieldData->clazz != nullptr);
fieldData->fid = env.GetStaticFieldID(fieldData->clazz, fieldData->name, fieldJniSig);
assert(fieldData->fid != nullptr);
}
else
{
fieldData->clazz = env.FindClass(fieldData->declaringType);
assert(fieldData->clazz != nullptr);
fieldData->fid = env.GetFieldID(fieldData->clazz, fieldData->name, fieldJniSig);
assert(fieldData->fid != nullptr);
}
}
if (!isStatic)
{
targetJavaObject = objectManager->GetJavaObjectByJsObject(target);
}
auto fieldId = fieldData->fid;
auto clazz = fieldData->clazz;
if (isPrimitiveType)
{
switch (fieldTypeName[0])
{
case 'Z': //bool
{
//TODO: validate value is a boolean before calling
if (isStatic)
{
env.SetStaticBooleanField(clazz, fieldId, value->BooleanValue());
}
else
{
env.SetBooleanField(targetJavaObject, fieldId, value->BooleanValue());
}
break;
}
case 'B': //byte
{
//TODO: validate value is a byte before calling
if (isStatic)
{
env.SetStaticByteField(clazz, fieldId, value->Int32Value());
}
else
{
env.SetByteField(targetJavaObject, fieldId, value->Int32Value());
}
break;
}
case 'C': //char
{
//TODO: validate value is a single char
String::Utf8Value stringValue(value->ToString());
JniLocalRef value(env.NewStringUTF(*stringValue));
const char* chars = env.GetStringUTFChars(value, 0);
if (isStatic)
{
env.SetStaticCharField(clazz, fieldId, chars[0]);
}
else
{
env.SetCharField(targetJavaObject, fieldId, chars[0]);
}
env.ReleaseStringUTFChars(value, chars);
break;
}
case 'S': //short
{
//TODO: validate value is a short before calling
if (isStatic)
{
env.SetStaticShortField(clazz, fieldId, value->Int32Value());
}
else
{
env.SetShortField(targetJavaObject, fieldId, value->Int32Value());
}
break;
}
case 'I': //int
{
//TODO: validate value is a int before calling
if (isStatic)
{
env.SetStaticIntField(clazz, fieldId, value->Int32Value());
}
else
{
env.SetIntField(targetJavaObject, fieldId, value->Int32Value());
}
break;
}
case 'J': //long
{
jlong longValue = static_cast<jlong>(ArgConverter::ConvertToJavaLong(value));
if (isStatic)
{
env.SetStaticLongField(clazz, fieldId, longValue);
}
else
{
env.SetLongField(targetJavaObject, fieldId, longValue);
}
break;
}
case 'F': //float
{
if (isStatic)
{
env.SetStaticFloatField(clazz, fieldId, static_cast<jfloat>(value->NumberValue()));
}
else
{
env.SetFloatField(targetJavaObject, fieldId, static_cast<jfloat>(value->NumberValue()));
}
break;
}
case 'D': //double
{
if (isStatic)
{
env.SetStaticDoubleField(clazz, fieldId, value->NumberValue());
}
else
{
env.SetDoubleField(targetJavaObject, fieldId, value->NumberValue());
}
break;
}
default:
{
// TODO:
ASSERT_FAIL("Unknown field type");
break;
}
}
}
else
{
bool isString = fieldTypeName == "java/lang/String";
jobject result = nullptr;
if(!value->IsNull()) {
if (isString)
{
//TODO: validate valie is a string;
result = ConvertToJavaString(value);
}
else
{
auto objectWithHiddenID = value->ToObject();
result =objectManager->GetJavaObjectByJsObject(objectWithHiddenID);
}
}
if (isStatic)
{
env.SetStaticObjectField(clazz, fieldId, result);
}
else
{
env.SetObjectField(targetJavaObject, fieldId, result);
}
if (isString)
{
env.DeleteLocalRef(result);
}
}
}
