aboutsummaryrefslogtreecommitdiff
path: root/tests/compiler/traversal/driver.cxx
blob: 65580aa6e0be16e23989f31e123610ff56782b75 (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
// file      : tests/compiler/traversal/driver.cxx
// copyright : Copyright (c) 2009-2013 Code Synthesis Tools CC
// license   : MIT; see accompanying LICENSE file

#include <vector>
#include <iostream>

#include <cutl/shared-ptr.hxx>

#include <cutl/compiler/type-info.hxx>
#include <cutl/compiler/traversal.hxx>

using namespace std;
using namespace cutl;

// Data types.
//
struct base
{
  virtual ~base () {}
};

struct derived1: base {};
struct derived2: base {};

typedef vector<cutl::shared_ptr<base> > objects;

struct init
{
  init ()
  {
    using compiler::type_info;

    {
      type_info ti (typeid (base));
      insert (ti);
    }

    {
      type_info ti (typeid (derived1));
      ti.add_base (typeid (base));
      insert (ti);
    }

    {
      type_info ti (typeid (derived2));
      ti.add_base (typeid (base));
      insert (ti);
    }
  }
} init_;

// Traversers.
//
template <typename X>
struct traverser: compiler::traverser_impl<X, base>,
                  virtual compiler::dispatcher<base>
{
  void
  add_traverser (compiler::traverser_map<base>& m)
  {
    compiler::dispatcher<base>::traverser (m);
  }
};

typedef traverser<base> base_trav;
typedef traverser<derived1> derived1_trav;
typedef traverser<derived2> derived2_trav;

struct base_impl: base_trav
{
  virtual void
  traverse (type&)
  {
    cout << "base_impl: base" << endl;
  }
};

struct derived1_impl: derived1_trav
{
  virtual void
  traverse (type&)
  {
    cout << "derived1_impl: derived1" << endl;
  }
};

struct combined_impl: derived1_trav, derived2_trav
{
  virtual void
  traverse (derived1&)
  {
    cout << "combined_impl: derived1" << endl;
  }

  virtual void
  traverse (derived2&)
  {
    cout << "combined_impl: derived2" << endl;
  }
};

int
main ()
{
  using cutl::shared_ptr;

  objects o;
  o.push_back (shared_ptr<base> (new (shared) base));
  o.push_back (shared_ptr<base> (new (shared) derived1));
  o.push_back (shared_ptr<base> (new (shared) derived2));

  base_impl base;
  derived1_impl derived1;
  combined_impl combined;

  for (objects::iterator i (o.begin ()); i != o.end (); ++i)
    base.dispatch (**i);

  cout << endl;

  for (objects::iterator i (o.begin ()); i != o.end (); ++i)
    derived1.dispatch (**i);

  cout << endl;

  for (objects::iterator i (o.begin ()); i != o.end (); ++i)
    combined.dispatch (**i);

  cout << endl;

  base.add_traverser (derived1);
  for (objects::iterator i (o.begin ()); i != o.end (); ++i)
    base.dispatch (**i);

  cout << endl;

  derived1.add_traverser (combined);
  for (objects::iterator i (o.begin ()); i != o.end (); ++i)
    derived1.dispatch (**i);
}