summaryrefslogtreecommitdiff
path: root/cli/traversal/elements.hxx
blob: a2ada23e020808d47af9e1521b3045c39d9dfe7a (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
// file      : cli/traversal/elements.hxx
// author    : Boris Kolpackov <boris@codesynthesis.com>
// license   : MIT; see accompanying LICENSE file

#ifndef CLI_TRAVERSAL_ELEMENTS_HXX
#define CLI_TRAVERSAL_ELEMENTS_HXX

#include <cutl/compiler/traversal.hxx>

#include <cli/semantics/elements.hxx>

namespace traversal
{
  using namespace cutl;

  //
  //
  typedef compiler::dispatcher<semantics::node> node_dispatcher;
  typedef compiler::dispatcher<semantics::edge> edge_dispatcher;

  //
  //
  struct node_base: node_dispatcher, edge_dispatcher
  {
    void
    edge_traverser (edge_dispatcher& d)
    {
      edge_dispatcher::traverser (d);
    }

    edge_dispatcher&
    edge_traverser ()
    {
      return *this;
    }

    using node_dispatcher::dispatch;
    using edge_dispatcher::dispatch;

    using edge_dispatcher::iterate_and_dispatch;
  };

  struct edge_base: edge_dispatcher, node_dispatcher
  {
    void
    node_traverser (node_dispatcher& d)
    {
      node_dispatcher::traverser (d);
    }

    node_dispatcher&
    node_traverser ()
    {
      return *this;
    }

    using edge_dispatcher::dispatch;
    using node_dispatcher::dispatch;

    using node_dispatcher::iterate_and_dispatch;
  };

  inline edge_base&
  operator>> (node_base& n, edge_base& e)
  {
    n.edge_traverser (e);
    return e;
  }

  inline node_base&
  operator>> (edge_base& e, node_base& n)
  {
    e.node_traverser (n);
    return n;
  }

  //
  //
  template <typename X>
  struct node: compiler::traverser_impl<X, semantics::node>,
               virtual node_base
  {
  };

  template <typename X>
  struct edge: compiler::traverser_impl<X, semantics::edge>,
               virtual edge_base
  {
  };

  // Edges
  //

  struct names: edge<semantics::names>
  {
    names ()
    {
    }

    names (node_dispatcher& n)
    {
      node_traverser (n);
    }

    virtual void
    traverse (type&);
  };

  // Nodes
  //

  struct nameable: node<semantics::nameable> {};

  template <typename T>
  struct scope_template: node<T>
  {
  public:
    virtual void
    traverse (T& s)
    {
      names (s);
    }

    virtual void
    names (T& s)
    {
      names (s, *this);
    }

    virtual void
    names (T& s, edge_dispatcher& d)
    {
      this->iterate_and_dispatch (s.names_begin (), s.names_end (), d);
    }
  };

  typedef scope_template<semantics::scope> scope;

  struct type: node<semantics::type> {};
}

#endif // CLI_TRAVERSAL_ELEMENTS_HXX