void JPField::setStaticAttribute(HostRef* val)
{
TRACE_IN("JPField::setStaticAttribute");
if (m_IsFinal)
{
stringstream err;
err << "Field " << m_Name << " is read-only";
RAISE(JPypeException, err.str().c_str());
}
JPType* type = JPTypeManager::getType(m_Type);
if (type->canConvertToJava(val) <= _explicit)
{
stringstream err;
err << "unable to convert to " << type->getName().getSimpleName();
RAISE(JPypeException, err.str().c_str());
}
JPCleaner cleaner;
jclass claz = m_Class->getClass();
cleaner.addLocal(claz);
type->setStaticValue(claz, m_FieldID, val);
TRACE_OUT;
}
void JPArray::setRange(int start, int stop, vector<HostRef*>& val)
{
JPCleaner cleaner;
JPType* compType = m_Class->getComponentType();
if(stop < start)
{
std::stringstream out;
out << "Slice start (" << start << ") is greater than stop ("
<< stop << ")";
RAISE(JPypeException, out.str());
}
unsigned int len = stop-start;
size_t plength = val.size();
if (len != plength)
{
std::stringstream out;
out << "Slice assignment must be of equal lengths : " << len << " != " << plength;
RAISE(JPypeException, out.str());
}
for (size_t i = 0; i < plength; i++)
{
HostRef* v = val[i];
if ( compType->canConvertToJava(v)<= _explicit)
{
RAISE(JPypeException, "Unable to convert.");
}
}
compType->setArrayRange(m_Object, start, stop-start, val);
}
void JPArray::setItem(int ndx, HostRef* val)
{
JPType* compType = m_Class->getComponentType();
if (compType->canConvertToJava(val) <= _explicit)
{
RAISE(JPypeException, "Unable to convert.");
}
compType->setArrayItem(m_Object, ndx, val);
}
void JPField::setAttribute(jobject inst, HostRef* val)
{
TRACE_IN("JPField::setAttribute");
if (m_IsFinal)
{
stringstream err;
err << "Field " << m_Name << " is read-only";
RAISE(JPypeException, err.str().c_str());
}
JPType* type = JPTypeManager::getType(m_Type);
if (type->canConvertToJava(val) <= _explicit)
{
stringstream err;
err << "unable to convert to " << type->getName().getSimpleName();
RAISE(JPypeException, err.str().c_str());
}
type->setInstanceValue(inst, m_FieldID, val);
TRACE_OUT;
}
EMatchType JPMethodOverload::matches(bool ignoreFirst, vector<HostRef*>& arg)
{
TRACE_IN("JPMethodOverload::matches");
size_t len = arg.size();
if (len != m_Arguments.size())
{
return _none;
}
EMatchType lastMatch = _exact;
for (unsigned int i = 0; i < len; i++)
{
if (i == 0 && ignoreFirst)
{
continue;
}
HostRef* obj = arg[i];
JPType* type = JPTypeManager::getType(m_Arguments[i]);
EMatchType match = type->canConvertToJava(obj);
if (match < _implicit)
{
return _none;
}
if (match < lastMatch)
{
lastMatch = match;
}
}
return lastMatch;
TRACE_OUT;
}
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;
}
