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);
}
}
}
