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_SPIRIT_SUPPORT_DETAIL_LEXER_PARSER_TREE_END_NODE_HPP
7 #define BOOST_SPIRIT_SUPPORT_DETAIL_LEXER_PARSER_TREE_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:
end_node(const std::size_t id_,const std::size_t unique_id_,const std::size_t lexer_state_)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 
~end_node()32     virtual ~end_node ()
33     {
34     }
35 
what_type() const36     virtual type what_type () const
37     {
38         return END;
39     }
40 
traverse(const_node_stack &,bool_stack &) const41     virtual bool traverse (const_node_stack &/*node_stack_*/,
42         bool_stack &/*perform_op_stack_*/) const
43     {
44         return false;
45     }
46 
followpos() const47     virtual const node_vector &followpos () const
48     {
49         // _followpos is always empty..!
50         return _followpos;
51     }
52 
end_state() const53     virtual bool end_state () const
54     {
55         return true;
56     }
57 
id() const58     virtual std::size_t id () const
59     {
60         return _id;
61     }
62 
unique_id() const63     virtual std::size_t unique_id () const
64     {
65         return _unique_id;
66     }
67 
lexer_state() const68     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 
copy_node(node_ptr_vector &,node_stack &,bool_stack &,bool &) const79     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
91