haiku.git

/*
 * Copyright 2009, Ingo Weinhold, ingo_weinhold@gmx.de.
 * Distributed under the terms of the MIT License.
 */


#include "PointerToMemberValueNode.h"

#include <new>

#include "Architecture.h"
#include "IntegerValue.h"
#include "Tracing.h"
#include "Type.h"
#include "ValueLoader.h"
#include "ValueLocation.h"


PointerToMemberValueNode::PointerToMemberValueNode(ValueNodeChild* nodeChild,
	PointerToMemberType* type)
	:
	ChildlessValueNode(nodeChild),
	fType(type)
{
	fType->AcquireReference();
}


PointerToMemberValueNode::~PointerToMemberValueNode()
{
	fType->ReleaseReference();
}


Type*
PointerToMemberValueNode::GetType() const
{
	return fType;
}


status_t
PointerToMemberValueNode::ResolvedLocationAndValue(ValueLoader* valueLoader,
	ValueLocation*& _location, Value*& _value)
{
	// get the location
	ValueLocation* location = NodeChild()->Location();
	if (location == NULL)
		return B_BAD_VALUE;

	TRACE_LOCALS("  TYPE_POINTER_TO_MEMBER\n");

	// get the value type
	type_code valueType;
	if (valueLoader->GetArchitecture()->AddressSize() == 4) {
		valueType = B_UINT32_TYPE;
		TRACE_LOCALS("    -> 32 bit\n");
	} else {
		valueType = B_UINT64_TYPE;
		TRACE_LOCALS("    -> 64 bit\n");
	}

	// load the value data
	BVariant valueData;
	status_t error = valueLoader->LoadValue(location, valueType, false,
		valueData);
	if (error != B_OK)
		return error;

	// create the type object
	Value* value = new(std::nothrow) IntegerValue(valueData);
	if (value == NULL)
		return B_NO_MEMORY;

	location->AcquireReference();
	_location = location;
	_value = value;
	return B_OK;
}