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140 lines
4.6 KiB
C++
140 lines
4.6 KiB
C++
#ifndef BOOST_STATECHART_DETAIL_CONSTRUCTOR_HPP_INCLUDED
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#define BOOST_STATECHART_DETAIL_CONSTRUCTOR_HPP_INCLUDED
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//////////////////////////////////////////////////////////////////////////////
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// Copyright 2002-2006 Andreas Huber Doenni
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// Distributed under the Boost Software License, Version 1.0. (See accompany-
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// ing file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
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//////////////////////////////////////////////////////////////////////////////
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#include <boost/mpl/eval_if.hpp>
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#include <boost/mpl/identity.hpp>
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#include <boost/mpl/equal_to.hpp>
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#include <boost/mpl/size.hpp>
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#include <boost/mpl/front.hpp>
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#include <boost/mpl/advance.hpp>
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#include <boost/mpl/find.hpp>
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#include <boost/mpl/push_front.hpp>
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#include <boost/mpl/pop_front.hpp>
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#include <boost/mpl/erase.hpp>
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#include <boost/mpl/reverse.hpp>
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#include <boost/mpl/long.hpp>
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namespace boost
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{
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namespace statechart
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{
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namespace detail
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{
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template< class ContextList, class OutermostContextBase >
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struct constructor;
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//////////////////////////////////////////////////////////////////////////////
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template< class ContextList, class OutermostContextBase >
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struct outer_constructor
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{
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typedef typename mpl::front< ContextList >::type to_construct;
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typedef typename to_construct::context_ptr_type context_ptr_type;
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typedef typename to_construct::inner_context_ptr_type
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inner_context_ptr_type;
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typedef typename to_construct::inner_initial_list inner_initial_list;
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typedef typename mpl::pop_front< ContextList >::type inner_context_list;
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typedef typename mpl::front< inner_context_list >::type::orthogonal_position
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inner_orthogonal_position;
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typedef typename mpl::advance<
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typename mpl::begin< inner_initial_list >::type,
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inner_orthogonal_position >::type to_construct_iter;
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typedef typename mpl::erase<
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inner_initial_list,
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to_construct_iter,
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typename mpl::end< inner_initial_list >::type
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>::type first_inner_initial_list;
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typedef typename mpl::erase<
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inner_initial_list,
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typename mpl::begin< inner_initial_list >::type,
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typename mpl::next< to_construct_iter >::type
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>::type last_inner_initial_list;
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static void construct(
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const context_ptr_type & pContext,
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OutermostContextBase & outermostContextBase )
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{
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const inner_context_ptr_type pInnerContext =
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to_construct::shallow_construct( pContext, outermostContextBase );
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to_construct::template deep_construct_inner<
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first_inner_initial_list >( pInnerContext, outermostContextBase );
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constructor< inner_context_list, OutermostContextBase >::construct(
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pInnerContext, outermostContextBase );
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to_construct::template deep_construct_inner<
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last_inner_initial_list >( pInnerContext, outermostContextBase );
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}
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};
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//////////////////////////////////////////////////////////////////////////////
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template< class ContextList, class OutermostContextBase >
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struct inner_constructor
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{
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typedef typename mpl::front< ContextList >::type to_construct;
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typedef typename to_construct::context_ptr_type context_ptr_type;
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static void construct(
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const context_ptr_type & pContext,
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OutermostContextBase & outermostContextBase )
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{
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to_construct::deep_construct( pContext, outermostContextBase );
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}
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};
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//////////////////////////////////////////////////////////////////////////////
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template< class ContextList, class OutermostContextBase >
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struct constructor_impl : public mpl::eval_if<
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mpl::equal_to< mpl::size< ContextList >, mpl::long_< 1 > >,
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mpl::identity< inner_constructor< ContextList, OutermostContextBase > >,
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mpl::identity< outer_constructor< ContextList, OutermostContextBase > > >
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{
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};
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//////////////////////////////////////////////////////////////////////////////
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template< class ContextList, class OutermostContextBase >
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struct constructor :
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constructor_impl< ContextList, OutermostContextBase >::type {};
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//////////////////////////////////////////////////////////////////////////////
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template< class CommonContext, class DestinationState >
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struct make_context_list
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{
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typedef typename mpl::reverse< typename mpl::push_front<
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typename mpl::erase<
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typename DestinationState::context_type_list,
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typename mpl::find<
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typename DestinationState::context_type_list,
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CommonContext
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>::type,
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typename mpl::end<
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typename DestinationState::context_type_list
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>::type
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>::type,
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DestinationState
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>::type >::type type;
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};
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} // namespace detail
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} // namespace statechart
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} // namespace boost
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#endif
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