4
Copyright (C) 2005-2010 Julien Jorge, Sebastien Angibaud
6
This program is free software; you can redistribute it and/or modify it
7
under the terms of the GNU General Public License as published by the
8
Free Software Foundation; either version 2 of the License, or (at your
9
option) any later version.
11
This program is distributed in the hope that it will be useful, but WITHOUT
12
ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13
FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
16
You should have received a copy of the GNU General Public License along
17
with this program; if not, write to the Free Software Foundation, Inc.,
18
51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
20
contact: plee-the-bear@gamned.org
22
Please add the tag [Bear] in the subject of your mails.
25
* \file with_expression_creation.hpp
26
* \brief An utility class to determine the item brick to use as the
27
* creation class for a given expression type.
28
* \author Julien Jorge
30
#ifndef __ENGINE_WITH_EXPRESSION_CREATION_HPP__
31
#define __ENGINE_WITH_EXPRESSION_CREATION_HPP__
33
#include "engine/item_brick/with_boolean_expression_creation.hpp"
34
#include "engine/item_brick/with_linear_expression_creation.hpp"
36
#include <claw/meta/conditional.hpp>
37
#include <claw/meta/is_base_of.hpp>
38
#include <claw/meta/no_type.hpp>
45
* \brief An utility class to determine the item brick to use as the
46
* creation class for a given expression type.
48
* \author Julien Jorge
50
template<typename Expression>
51
class with_expression_creation
54
/** \brief The type of the class to use to instanciate Expression. */
56
claw::meta::if_then_else
58
claw::meta::is_base_of /* check if it's a boolean expression. */
60
expr::base_boolean_expression,
63
with_boolean_expression_creation,
64
typename claw::meta::if_then_else /* maybe a linear expression then? */
66
claw::meta::is_base_of
68
expr::base_linear_expression,
71
with_linear_expression_creation,
72
claw::meta::no_type /* I can't determine the expression. */
74
>::result creation_class_type;
75
}; // class with_expression_creation
80
#endif // __ENGINE_WITH_EXPRESSION_CREATION_HPP__