2 Copyright (C) 2001-2006, William Joseph.
5 This file is part of GtkRadiant.
7 GtkRadiant is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 2 of the License, or
10 (at your option) any later version.
12 GtkRadiant is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with GtkRadiant; if not, write to the Free Software
19 Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
22 #if !defined( INCLUDED_TYPESYSTEM_H )
23 #define INCLUDED_TYPESYSTEM_H
28 #include "generic/callback.h"
29 #include "generic/static.h"
33 typedef std::list<Callback<void()>> Initialisers;
34 Initialisers m_initialisers;
35 mutable bool m_initialised;
37 InitialiserList() : m_initialised( false ){
39 void addInitialiser( const Callback<void()>& callback ){
40 m_initialisers.push_back( callback );
42 void initialise() const {
43 if ( !m_initialised ) {
46 for ( Initialisers::const_iterator i = m_initialisers.begin(); i != m_initialisers.end(); ++i )
54 //--Type System-------------------
56 class TypeSystemInitialiser : public InitialiserList
60 typedef SmartStatic<TypeSystemInitialiser> StaticTypeSystemInitialiser;
62 class TypeSystemRef : public StaticTypeSystemInitialiser
66 StaticTypeSystemInitialiser::instance().initialise();
72 typedef std::size_t TypeId;
73 typedef void*( *TypeCast )( void* );
75 template<std::size_t SIZE>
78 TypeCast m_casts[SIZE];
81 std::uninitialized_fill( m_casts, m_casts + SIZE, TypeCast( 0 ) );
83 void install( TypeId typeId, TypeCast typeCast ){
84 m_casts[typeId] = typeCast;
86 void* cast( TypeId typeId, void* p ){
87 TypeCast typeCast = m_casts[typeId];
88 if ( typeCast != 0 ) {
95 template<typename Type, typename Cast>
99 static void install( TypeCastTable<Type::SIZE>& table ){
100 table.install( Type::getTypeId(), Cast::cast );
104 template<typename Type>
108 static void* cast( void* p ){
113 template<typename Type, typename Base>
117 static void* cast( void* p ){
118 return static_cast<Base*>( reinterpret_cast<Type*>( p ) );
122 template<typename Type>
127 template<typename Type, typename Contained>
131 static void* cast( void* p ){
132 return &reinterpret_cast<Type*>( p )->get( NullType<Contained>() );