/*****************************************************************************
   Copyright 2004-2008 Steve Ménard

   Licensed under the Apache License, Version 2.0 (the "License");
   you may not use this file except in compliance with the License.
   You may obtain a copy of the License at

	   http://www.apache.org/licenses/LICENSE-2.0

   Unless required by applicable law or agreed to in writing, software
   distributed under the License is distributed on an "AS IS" BASIS,
   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   See the License for the specific language governing permissions and
   limitations under the License.

 *****************************************************************************/
#include <jp_primitive_common.h>

JPIntType::JPIntType() : JPPrimitiveType(JPTypeManager::_java_lang_Integer)
{
}

JPIntType::~JPIntType()
{
}

bool JPIntType::isSubTypeOf(JPClass* other) const
{
	return other == JPTypeManager::_int
			|| other == JPTypeManager::_long
			|| other == JPTypeManager::_float
			|| other == JPTypeManager::_double;
}

JPPyObject JPIntType::convertToPythonObject(jvalue val)
{
	return JPPyInt::fromInt(field(val));
}

JPValue JPIntType::getValueFromObject(jobject obj)
{
	jvalue v;
	field(v) = JPJni::intValue(obj);
	return JPValue(this, v);
}

JPMatch::Type JPIntType::canConvertToJava(PyObject* obj)
{
	ASSERT_NOT_NULL(obj);
	if (JPPyObject::isNone(obj))
	{
		return JPMatch::_none;
	}

	JPValue* value = JPPythonEnv::getJavaValue(obj);
	if (value != NULL)
	{
		if (value->getClass() == this)
		{
			return JPMatch::_exact;
		}

		// Implied conversion from boxed to primitive (JLS 5.1.8)
		if (value->getClass() == m_BoxedClass)
		{
			return JPMatch::_implicit;
		}

		// Unboxing must be to the from the exact boxed type (JLS 5.1.8) 
		return JPMatch::_none;
	}

	if (JPPyLong::check(obj))
	{
		return JPMatch::_implicit;
	}

	if (JPPyLong::checkConvertable(obj))
	{
		// If it has integer operations then we will call it an int
		if (JPPyLong::checkIndexable(obj))
			return JPMatch::_implicit;
		else
			return JPMatch::_explicit;
	}

	return JPMatch::_none;
}

jvalue JPIntType::convertToJava(PyObject* obj)
{
	JP_TRACE_IN("JPIntType::convertToJava");
	jvalue res;
	field(res) = 0;
	JPValue* value = JPPythonEnv::getJavaValue(obj);
	if (value != NULL)
	{
		if (value->getClass() == this)
		{
			return *value;
		}
		if (value->getClass() == m_BoxedClass)
		{
			return getValueFromObject(value->getJavaObject());
		}
		JP_RAISE_TYPE_ERROR("Cannot convert value to Java int");
	}
	else if (JPPyLong::checkConvertable(obj))
	{
		field(res) = (type_t) assertRange(JPPyLong::asLong(obj));
		return res;
	}

	JP_RAISE_TYPE_ERROR("Cannot convert value to Java int");
	return res; // never reached
	JP_TRACE_OUT;
}

jarray JPIntType::newArrayInstance(JPJavaFrame& frame, jsize sz)
{
	return frame.NewIntArray(sz);
}

JPPyObject JPIntType::getStaticField(JPJavaFrame& frame, jclass c, jfieldID fid)
{
	jvalue v;
	field(v) = frame.GetStaticIntField(c, fid);
	return convertToPythonObject(v);
}

JPPyObject JPIntType::getField(JPJavaFrame& frame, jobject c, jfieldID fid)
{
	jvalue v;
	field(v) = frame.GetIntField(c, fid);
	return convertToPythonObject(v);
}

JPPyObject JPIntType::invokeStatic(JPJavaFrame& frame, jclass claz, jmethodID mth, jvalue* val)
{
	jvalue v;
	{
		JPPyCallRelease call;
		field(v) = frame.CallStaticIntMethodA(claz, mth, val);
	}
	return convertToPythonObject(v);
}

JPPyObject JPIntType::invoke(JPJavaFrame& frame, jobject obj, jclass clazz, jmethodID mth, jvalue* val)
{
	jvalue v;
	{
		JPPyCallRelease call;
		if (clazz == NULL)
			field(v) = frame.CallIntMethodA(obj, mth, val);
		else
			field(v) = frame.CallNonvirtualIntMethodA(obj, clazz, mth, val);
	}
	return convertToPythonObject(v);
}

void JPIntType::setStaticField(JPJavaFrame& frame, jclass c, jfieldID fid, PyObject* obj)
{
	type_t val = field(convertToJava(obj));
	frame.SetStaticIntField(c, fid, val);
}

void JPIntType::setField(JPJavaFrame& frame, jobject c, jfieldID fid, PyObject* obj)
{
	type_t val = field(convertToJava(obj));
	frame.SetIntField(c, fid, val);
}

JPPyObject JPIntType::getArrayRange(JPJavaFrame& frame, jarray a, jsize lo, jsize hi)
{
	return getSlice<type_t>(frame, a, lo, lo + hi, NPY_INT, PyInt_FromLong);
}

void JPIntType::setArrayRange(JPJavaFrame& frame, jarray a, jsize start, jsize length, PyObject* sequence)
{
	JP_TRACE_IN("JPIntType::setArrayRange");
	if (setRangeViaBuffer<array_t, type_t>(frame, a, start, length, sequence, NPY_INT,
			&JPJavaFrame::SetIntArrayRegion))
		return;

	JPPrimitiveArrayAccessor<array_t, type_t*> accessor(frame, a,
			&JPJavaFrame::GetIntArrayElements, &JPJavaFrame::ReleaseIntArrayElements);

	type_t* val = accessor.get();
	JPPySequence seq(JPPyRef::_use, sequence);
	for (Py_ssize_t i = 0; i < length; ++i)
	{
		type_t v = (type_t) PyInt_AsLong(seq[i].get());
		if (v == -1 && JPPyErr::occurred())
		{
			JP_RAISE_PYTHON("JPIntType::setArrayRange");
		}
		val[start + i] = v;
	}
	accessor.commit();
	JP_TRACE_OUT;
}

JPPyObject JPIntType::getArrayItem(JPJavaFrame& frame, jarray a, jsize ndx)
{
	array_t array = (array_t) a;
	type_t val;
	frame.GetIntArrayRegion(array, ndx, 1, &val);
	jvalue v;
	field(v) = val;
	return convertToPythonObject(v);
}

void JPIntType::setArrayItem(JPJavaFrame& frame, jarray a, jsize ndx, PyObject* obj)
{
	array_t array = (array_t) a;
	type_t val = field(convertToJava(obj));
	frame.SetIntArrayRegion(array, ndx, 1, &val);
}

