73 lines
2.2 KiB
C++
73 lines
2.2 KiB
C++
// Filename: dcast.cxx
|
|
// Created by: drose (07Aug01)
|
|
//
|
|
////////////////////////////////////////////////////////////////////
|
|
//
|
|
// PANDA 3D SOFTWARE
|
|
// Copyright (c) 2001 - 2004, Disney Enterprises, Inc. All rights reserved
|
|
//
|
|
// All use of this software is subject to the terms of the Panda 3d
|
|
// Software license. You should have received a copy of this license
|
|
// along with this source code; you will also find a current copy of
|
|
// the license at http://etc.cmu.edu/panda3d/docs/license/ .
|
|
//
|
|
// To contact the maintainers of this program write to
|
|
// panda3d-general@lists.sourceforge.net .
|
|
//
|
|
////////////////////////////////////////////////////////////////////
|
|
|
|
#include "dcast.h"
|
|
#include "config_express.h"
|
|
|
|
#ifdef _WIN32
|
|
#include <windows.h> // for IsBadWritePtr()
|
|
#endif
|
|
|
|
|
|
#ifdef DO_DCAST
|
|
////////////////////////////////////////////////////////////////////
|
|
// Function: _dcast_verify
|
|
// Description: This function performs the actual check that the
|
|
// indicated TypedObject pointer is of the intended
|
|
// type.
|
|
////////////////////////////////////////////////////////////////////
|
|
bool
|
|
_dcast_verify(TypeHandle want_handle, size_t want_size,
|
|
const TypedObject *ptr) {
|
|
if (get_verify_dcast()) {
|
|
if (ptr == (const TypedObject *)NULL) {
|
|
// This is allowed these days. It used to be an error, but
|
|
// what the heck.
|
|
if (express_cat->is_debug()) {
|
|
express_cat->debug()
|
|
<< "Attempt to cast NULL pointer to "
|
|
<< want_handle << "\n";
|
|
}
|
|
return true;
|
|
}
|
|
#if defined(_DEBUG) && defined(_WIN32)
|
|
if (IsBadWritePtr((TypedObject *)ptr, want_size)) {
|
|
express_cat->warning()
|
|
<< "Attempt to cast invalid pointer to "
|
|
<< want_handle << "\n";
|
|
return false;
|
|
}
|
|
#endif
|
|
if (!ptr->is_of_type(want_handle)) {
|
|
express_cat->error()
|
|
<< "Attempt to cast pointer from " << ptr->get_type()
|
|
<< " to " << want_handle << "\n";
|
|
if (ptr->get_type() == TypedObject::get_class_type()) {
|
|
express_cat->error(false)
|
|
<< "Perhaps pointer was inadvertently deleted?\n";
|
|
}
|
|
return false;
|
|
}
|
|
}
|
|
|
|
return true;
|
|
}
|
|
#endif // DO_DCAST
|
|
|
|
|