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1 #ifndef BOOST_STATECHART_DETAIL_LEAF_STATE_HPP_INCLUDED
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2 #define BOOST_STATECHART_DETAIL_LEAF_STATE_HPP_INCLUDED
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3 //////////////////////////////////////////////////////////////////////////////
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4 // Copyright 2002-2006 Andreas Huber Doenni
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5 // Distributed under the Boost Software License, Version 1.0. (See accompany-
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6 // ing file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
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7 //////////////////////////////////////////////////////////////////////////////
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8
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9
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10
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11 #include <boost/statechart/detail/state_base.hpp>
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12
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13
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14
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15 namespace boost
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16 {
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17 namespace statechart
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18 {
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19 namespace detail
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20 {
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21
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22
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23
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24 //////////////////////////////////////////////////////////////////////////////
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25 template< class Allocator, class RttiPolicy >
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26 class leaf_state : public state_base< Allocator, RttiPolicy >
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27 {
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28 typedef state_base< Allocator, RttiPolicy > base_type;
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29 protected:
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30 //////////////////////////////////////////////////////////////////////////
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31 leaf_state( typename RttiPolicy::id_provider_type idProvider ) :
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32 base_type( idProvider )
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33 {
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34 }
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35
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36 ~leaf_state() {}
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37
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38 public:
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39 //////////////////////////////////////////////////////////////////////////
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40 // The following declarations should be private.
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41 // They are only public because many compilers lack template friends.
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42 //////////////////////////////////////////////////////////////////////////
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43 void set_list_position(
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44 typename base_type::state_list_type::iterator listPosition )
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45 {
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46 listPosition_ = listPosition;
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47 }
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48
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49 typedef typename base_type::leaf_state_ptr_type
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50 direct_state_base_ptr_type;
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51
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52 virtual void remove_from_state_list(
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53 typename base_type::state_list_type::iterator & statesEnd,
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54 typename base_type::node_state_base_ptr_type & pOutermostUnstableState,
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55 bool performFullExit )
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56 {
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57 --statesEnd;
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58 swap( *listPosition_, *statesEnd );
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59 ( *listPosition_ )->set_list_position( listPosition_ );
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60 direct_state_base_ptr_type & pState = *statesEnd;
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61 // Because the list owns the leaf_state, this leads to the immediate
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62 // termination of this state.
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63 pState->exit_impl( pState, pOutermostUnstableState, performFullExit );
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64 }
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65
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66 virtual void exit_impl(
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67 direct_state_base_ptr_type & pSelf,
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68 typename base_type::node_state_base_ptr_type & pOutermostUnstableState,
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69 bool performFullExit ) = 0;
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70
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71 private:
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72 //////////////////////////////////////////////////////////////////////////
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73 typename base_type::state_list_type::iterator listPosition_;
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74 };
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75
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76
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77
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78 } // namespace detail
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79 } // namespace statechart
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80 } // namespace boost
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81
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82
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83
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84 #endif
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