HostRef* JPMethodOverload::invokeInstance(vector<HostRef*>& args)
{
TRACE_IN("JPMethodOverload::invokeInstance");
HostRef* res;
{
JPCleaner cleaner;
// Arg 0 is "this"
HostRef* self = args[0];
JPObject* selfObj = JPEnv::getHost()->asObject(self);
size_t len = args.size();
JPMallocCleaner<jvalue> v(len-1);
for (unsigned int i = 1; i < len; i++)
{
HostRef* obj = args[i];
JPType* type = JPTypeManager::getType(m_Arguments[i]);
v[i-1] = type->convertToJava(obj);
// below seems not to be necessary, since jvalues are clean by jpmalloccleaner
// if (type->isObjectType())
// {
// //TODO : investigate: this is not valid for either local or global ref
// // add hostref to garbage collection
// cleaner.add(v[i-1].l);
// }
}
JPType* retType = JPTypeManager::getType(m_ReturnType);
jobject c = selfObj->getObject();
cleaner.addLocal(c);
jclass clazz = m_Class->getClass();
cleaner.addGlobal(clazz);
res = retType->invoke(c, clazz, m_MethodID, v.borrow());
TRACE1("Call finished");
}
TRACE1("Call successfull");
return res;
TRACE_OUT;
}
jvalue JPStringType::convertToJava(HostRef* obj)
{
TRACE_IN("JPStringType::convertToJava");
JPCleaner cleaner;
jvalue v;
if (JPEnv::getHost()->isNone(obj))
{
v.l = NULL;
return v;
}
if (JPEnv::getHost()->isWrapper(obj))
{
return JPEnv::getHost()->getWrapperValue(obj);
}
if (JPEnv::getHost()->isObject(obj))
{
JPObject* o = JPEnv::getHost()->asObject(obj);
JPClass* oc = o->getClass();
if (oc->getName().getSimpleName() == "java.lang.String")
{
v.l = o->getObject();
return v;
}
}
JCharString wstr = JPEnv::getHost()->stringAsJCharString(obj);
jchar* jstr = new jchar[wstr.length()+1];
jstr[wstr.length()] = 0;
for (size_t i = 0; i < wstr.length(); i++)
{
jstr[i] = (jchar)wstr[i];
}
jstring res = JPEnv::getJava()->NewString(jstr, (jint)wstr.length());
delete[] jstr;
v.l = res;
return v;
TRACE_OUT;
}
jobject JPPrimitiveType::convertToJavaObject(HostRef* obj)
{
JPCleaner cleaner;
JPTypeName tname = getObjectType();
JPClass* c = JPTypeManager::findClass(tname);
jclass jc = c->getClass();
cleaner.addLocal(jc);
vector<HostRef*> args(1);
args[0] = obj;
JPObject* o = c->newInstance(args);
jobject res = o->getObject();
delete o;
return res;
}
EMatchType JPStringType::canConvertToJava(HostRef* obj)
{
TRACE_IN("JPStringType::canConvertToJava");
JPCleaner cleaner;
if (obj == NULL || JPEnv::getHost()->isNone(obj))
{
return _implicit;
}
if (JPEnv::getHost()->isString(obj))
{
return _exact;
}
if (JPEnv::getHost()->isWrapper(obj))
{
JPTypeName name = JPEnv::getHost()->getWrapperTypeName(obj);
if (name.getType() == JPTypeName::_string)
{
return _exact;
}
}
if (JPEnv::getHost()->isObject(obj))
{
JPObject* o = JPEnv::getHost()->asObject(obj);
JPClass* oc = o->getClass();
if (oc->getName().getSimpleName() == "java.lang.String")
{
return _exact;
}
}
return _none;
TRACE_OUT;
}
jvalue JPClass::convertToJava(HostRef* obj)
{
jvalue res;
JPCleaner cleaner;
res.l = NULL;
// assume it is convertible;
if (JPEnv::getHost()->isNone(obj))
{
res.l = NULL;
}
string simpleName = m_Name.getSimpleName();
if (JPEnv::getHost()->isInt(obj) && (simpleName == "java.lang.Byte" || simpleName == "java.lang.Short" ||
simpleName == "java.lang.Integer"))
{
return buildObjectWrapper(obj);
}
if ((JPEnv::getHost()->isInt(obj) || JPEnv::getHost()->isLong(obj)) && simpleName == "java.lang.Long" && JPEnv::getHost()->isLong(obj))
{
return buildObjectWrapper(obj);
}
if (JPEnv::getHost()->isFloat(obj) && (simpleName == "java.lang.Float" || simpleName == "java.lang.Double"))
{
if (JPEnv::getHost()->isFloat(obj))
{
return buildObjectWrapper(obj);
}
}
if (JPEnv::getHost()->isString(obj))
{
JPTypeName name = JPTypeName::fromSimple("java.lang.String");
JPType* type = JPTypeManager::getType(name);
return type->convertToJava(obj);
}
if (JPEnv::getHost()->isObject(obj))
{
JPObject* ref = JPEnv::getHost()->asObject(obj);
res.l = ref->getObject();
}
if (JPEnv::getHost()->isProxy(obj))
{
JPProxy* proxy = JPEnv::getHost()->asProxy(obj);
res.l = proxy->getProxy();
}
if (JPEnv::getHost()->isWrapper(obj))
{
res = JPEnv::getHost()->getWrapperValue(obj);
}
if (JPEnv::getHost()->isInt(obj))
{
JPTypeName tname = JPTypeName::fromType(JPTypeName::_int);
JPType* t = JPTypeManager::getType(tname);
res.l = t->convertToJavaObject(obj);
}
if (JPEnv::getHost()->isLong(obj))
{
JPTypeName tname = JPTypeName::fromType(JPTypeName::_long);
JPType* t = JPTypeManager::getType(tname);
res.l = t->convertToJavaObject(obj);
}
if (JPEnv::getHost()->isFloat(obj))
{
JPTypeName tname = JPTypeName::fromType(JPTypeName::_double);
JPType* t = JPTypeManager::getType(tname);
res.l = t->convertToJavaObject(obj);
}
if (JPEnv::getHost()->isBoolean(obj))
{
JPTypeName tname = JPTypeName::fromType(JPTypeName::_boolean);
JPType* t = JPTypeManager::getType(tname);
res.l = t->convertToJavaObject(obj);
}
if (JPEnv::getHost()->isArray(obj) && simpleName == "java.lang.Object")
{
JPArray* a = JPEnv::getHost()->asArray(obj);
res = a->getValue();
}
return res;
}
EMatchType JPClass::canConvertToJava(HostRef* obj)
{
if (JPEnv::getHost()->isNone(obj))
{
return _implicit;
}
JPCleaner cleaner;
string simpleName = m_Name.getSimpleName();
if (simpleName == "java.lang.Byte" || simpleName == "java.lang.Short" ||
simpleName == "java.lang.Integer")
{
if (JPEnv::getHost()->isInt(obj))
{
return _explicit;
}
}
if (simpleName == "java.lang.Long" && JPEnv::getHost()->isLong(obj))
{
return _explicit;
}
if (simpleName == "java.lang.Float" || simpleName == "java.lang.Double")
{
if (JPEnv::getHost()->isFloat(obj))
{
return _explicit;
}
}
if (JPEnv::getHost()->isObject(obj))
{
JPObject* o = JPEnv::getHost()->asObject(obj);
JPClass* oc = o->getClass();
if (oc == this)
{
// hey, this is me! :)
return _exact;
}
if (JPEnv::getJava()->IsAssignableFrom(oc->m_Class, m_Class))
{
return _implicit;
}
}
if (JPEnv::getHost()->isProxy(obj))
{
JPProxy* proxy = JPEnv::getHost()->asProxy(obj);
// Check if any of the interfaces matches ...
vector<jclass> itf = proxy->getInterfaces();
for (unsigned int i = 0; i < itf.size(); i++)
{
if (JPEnv::getJava()->IsAssignableFrom(itf[i], m_Class))
{
return _implicit;
}
}
}
if (JPEnv::getHost()->isWrapper(obj))
{
JPTypeName o = JPEnv::getHost()->getWrapperTypeName(obj);
if (o.getSimpleName() == m_Name.getSimpleName())
{
return _exact;
}
}
if (m_Name.getSimpleName() == "java.lang.Object")
{
// arrays are objects
if (JPEnv::getHost()->isArray(obj))
{
return _implicit;
}
// Strings are objects too
if (JPEnv::getHost()->isString(obj))
{
return _implicit;
}
// Class are objects too
if (JPEnv::getHost()->isClass(obj) || JPEnv::getHost()->isArrayClass(obj))
{
return _implicit;
}
// Let'a allow primitives (int, long, float and boolean) to convert implicitly too ...
if (JPEnv::getHost()->isInt(obj))
{
return _implicit;
}
if (JPEnv::getHost()->isLong(obj))
{
return _implicit;
}
if (JPEnv::getHost()->isFloat(obj))
{
return _implicit;
}
if (JPEnv::getHost()->isBoolean(obj))
{
return _implicit;
}
}
return _none;
}
JNIEXPORT jobject JNICALL Java_jpype_JPypeInvocationHandler_hostInvoke(
JNIEnv *env, jclass clazz, jstring name,
jlong hostObj, jobjectArray args,
jobjectArray types, jclass returnType)
{
TRACE_IN("Java_jpype_JPypeInvocationHandler_hostInvoke");
void* callbackState = JPEnv::getHost()->prepareCallbackBegin();
JPCleaner cleaner;
try {
string cname = JPJni::asciiFromJava(name);
HostRef* hostObjRef = (HostRef*)hostObj;
HostRef* callable = JPEnv::getHost()->getCallableFrom(hostObjRef, cname);
cleaner.add(callable);
if (callable == NULL || callable->isNull() || JPEnv::getHost()->isNone(callable))
{
JPEnv::getJava()->ThrowNew(JPJni::s_NoSuchMethodErrorClass, cname.c_str());
JPEnv::getHost()->prepareCallbackFinish(callbackState);
return NULL;
}
// convert the arguments into a python list
jsize argLen = JPEnv::getJava()->GetArrayLength(types);
vector<HostRef*> hostArgs;
std::vector<JPTypeName> argTypes;
for (jsize j = 0; j < argLen; j++)
{
jclass c = (jclass)JPEnv::getJava()->GetObjectArrayElement(types, j);
cleaner.addLocal(c);
JPTypeName tn = JPJni::getName(c);
argTypes.push_back(tn);
}
for (int i = 0; i < argLen; i++)
{
jobject obj = JPEnv::getJava()->GetObjectArrayElement(args, i);
cleaner.addLocal(obj);
JPTypeName t = argTypes[i];
jvalue v;
v.l = obj;
HostRef* o = JPTypeManager::getType(t)->asHostObjectFromObject(v);
cleaner.add(o);
hostArgs.push_back(o);
}
HostRef* returnValue = JPEnv::getHost()->callObject(callable, hostArgs);
cleaner.add(returnValue);
JPTypeName returnT = JPJni::getName(returnType);
if (returnValue == NULL || returnValue->isNull() || JPEnv::getHost()->isNone(returnValue))
{
if (returnT.getType() != JPTypeName::_void && returnT.getType() < JPTypeName::_object)
{
JPEnv::getJava()->ThrowNew(JPJni::s_RuntimeExceptionClass, "Return value is None when it cannot be");
JPEnv::getHost()->prepareCallbackFinish(callbackState);
return NULL;
}
}
if (returnT.getType() == JPTypeName::_void)
{
JPEnv::getHost()->prepareCallbackFinish(callbackState);
return NULL;
}
JPType* rt = JPTypeManager::getType(returnT);
if (rt->canConvertToJava(returnValue) == _none)
{
JPEnv::getJava()->ThrowNew(JPJni::s_RuntimeExceptionClass, "Return value is not compatible with required type.");
JPEnv::getHost()->prepareCallbackFinish(callbackState);
return NULL;
}
jobject returnObj = rt->convertToJavaObject(returnValue);
JPEnv::getHost()->prepareCallbackFinish(callbackState);
return returnObj;
}
catch(HostException* ex)
{
JPEnv::getHost()->clearError();
if (JPEnv::getHost()->isJavaException(ex))
{
JPCleaner cleaner;
HostRef* javaExcRef = JPEnv::getHost()->getJavaException(ex);
JPObject* javaExc = JPEnv::getHost()->asObject(javaExcRef);
cleaner.add(javaExcRef);
jobject obj = javaExc->getObject();
cleaner.addLocal(obj);
JPEnv::getJava()->Throw((jthrowable)obj);
}
else
{
JPEnv::getJava()->ThrowNew(JPJni::s_RuntimeExceptionClass, "Python exception thrown");
}
}
catch(JavaException*)
{
cerr << "Java exception at " << __FILE__ << ":" << __LINE__ << endl;
}
catch(JPypeException* ex)
{
JPEnv::getJava()->ThrowNew(JPJni::s_RuntimeExceptionClass, ex->getMsg());
}
JPEnv::getHost()->prepareCallbackFinish(callbackState);
return NULL;
TRACE_OUT;
}