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panda/src/putil/factoryBase.I

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// Filename: factoryBase.I
// Created by:  drose (08May00)
//
////////////////////////////////////////////////////////////////////
//
// PANDA 3D SOFTWARE
// Copyright (c) 2001, 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://www.panda3d.org/license.txt .
//
// To contact the maintainers of this program write to
// panda3d@yahoogroups.com .
//
////////////////////////////////////////////////////////////////////


////////////////////////////////////////////////////////////////////
//     Function: FactoryBase::make_instance
//       Access: Public
//  Description: Attempts to create a new instance of some class of
//               the indicated type, or some derivative if necessary.
//               If an instance of the exact type cannot be created,
//               the specified priorities will specify which derived
//               class will be preferred.
//
//               This flavor of make_instance() accepts a string name
//               that indicates the desired type.  It must be the name
//               of some already-registered type.
////////////////////////////////////////////////////////////////////
INLINE TypedObject *FactoryBase::
make_instance(const string &type_name, const FactoryParams &params) {
  TypeHandle handle = TypeRegistry::ptr()->find_type(type_name);
  nassertr(handle != TypeHandle::none(), NULL);

  return make_instance(handle, params);
}


////////////////////////////////////////////////////////////////////
//     Function: FactoryBase::make_instance_more_general
//       Access: Public
//  Description: Attempts to create an instance of the type requested,
//               or some base type of the type requested.  Returns the
//               new instance created, or NULL if the instance could
//               not be created.
//
//               This flavor of make_instance_more_general() accepts a
//               string name that indicates the desired type.  It must
//               be the name of some already-registered type.
////////////////////////////////////////////////////////////////////
INLINE TypedObject *FactoryBase::
make_instance_more_general(const string &type_name,
                           const FactoryParams &params) {
  TypeHandle handle = TypeRegistry::ptr()->find_type(type_name);
  nassertr(handle != TypeHandle::none(), NULL);

  return make_instance_more_general(handle, params);
}

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