ceph/src/boost/libs/spirit/include/boost/spirit/home/support/detail/lexer/parser/tree/end_node.hpp

   1 // end_node.hpp
   2 // Copyright (c) 2007-2009 Ben Hanson (http://www.benhanson.net/)
   3 //
   4 // Distributed under the Boost Software License, Version 1.0. (See accompanying
   5 // file licence_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
   6 #ifndef BOOST_LEXER_END_NODE_HPP
   7 #define BOOST_LEXER_END_NODE_HPP
   8
   9 #include "node.hpp"
  10 #include "../../size_t.hpp"
  11
  12 namespace boost
  13 {
  14 namespace lexer
  15 {
  16 namespace detail
  17 {
  18 class end_node : public node
  19 {
  20 public:
  21     end_node (const std::size_t id_, const std::size_t unique_id_,
  22         const std::size_t lexer_state_) :
  23         node (false),
  24         _id (id_),
  25         _unique_id (unique_id_),
  26         _lexer_state (lexer_state_)
  27     {
  28         node::_firstpos.push_back (this);
  29         node::_lastpos.push_back (this);
  30     }
  31
  32     virtual ~end_node ()
  33     {
  34     }
  35
  36     virtual type what_type () const
  37     {
  38         return END;
  39     }
  40
  41     virtual bool traverse (const_node_stack &/*node_stack_*/,
  42         bool_stack &/*perform_op_stack_*/) const
  43     {
  44         return false;
  45     }
  46
  47     virtual const node_vector &followpos () const
  48     {
  49         // _followpos is always empty..!
  50         return _followpos;
  51     }
  52
  53     virtual bool end_state () const
  54     {
  55         return true;
  56     }
  57
  58     virtual std::size_t id () const
  59     {
  60         return _id;
  61     }
  62
  63     virtual std::size_t unique_id () const
  64     {
  65         return _unique_id;
  66     }
  67
  68     virtual std::size_t lexer_state () const
  69     {
  70         return _lexer_state;
  71     }
  72
  73 private:
  74     std::size_t _id;
  75     std::size_t _unique_id;
  76     std::size_t _lexer_state;
  77     node_vector _followpos;
  78
  79     virtual void copy_node (node_ptr_vector &/*node_ptr_vector_*/,
  80         node_stack &/*new_node_stack_*/, bool_stack &/*perform_op_stack_*/,
  81         bool &/*down_*/) const
  82     {
  83         // Nothing to do, as end_nodes are not copied.
  84     }
  85 };
  86 }
  87 }
  88 }
  89
  90 #endif