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
12namespace boost
13{
14namespace lexer
15{
16namespace detail
17{
18class end_node : public node
19{
20public:
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 (x: this);
29 node::_lastpos.push_back (x: 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
73private:
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
91

source code of boost/libs/spirit/include/boost/spirit/home/support/detail/lexer/parser/tree/end_node.hpp