summaryrefslogtreecommitdiff
path: root/cli/semantics/elements.hxx
blob: e650f37bdab2b0a2e43b7ea720bd8e512e617878 (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
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
// file      : cli/semantics/elements.hxx
// author    : Boris Kolpackov <boris@codesynthesis.com>
// copyright : Copyright (c) 2009-2011 Code Synthesis Tools CC
// license   : MIT; see accompanying LICENSE file

#ifndef CLI_SEMANTICS_ELEMENTS_HXX
#define CLI_SEMANTICS_ELEMENTS_HXX

#include <map>
#include <list>
#include <vector>
#include <string>
#include <cstddef> // std::size_t
#include <cstdlib> // std::abort
#include <utility> // std::pair
#include <cassert>

#include <cutl/fs/path.hxx>

#include <cutl/container/graph.hxx>
#include <cutl/container/pointer-iterator.hxx>

#include <cutl/compiler/context.hxx>

namespace semantics
{
  using namespace cutl;

  using std::size_t;
  using std::string;

  using container::graph;
  using container::pointer_iterator;

  using compiler::context;


  //
  //
  using fs::path;
  using fs::invalid_path;


  //
  //
  class node;
  class edge;


  //
  //
  class edge
  {
  public:
    virtual
    ~edge () {}

  public:
    typedef semantics::context context_type;

    context_type&
    context ()
    {
      return context_;
    }

  public:
    template <typename X>
    bool
    is_a () const
    {
      return dynamic_cast<X const*> (this) != 0;
    }

  private:
    context_type context_;
  };

  //
  //
  class node
  {
  public:
    virtual
    ~node () {}

  public:
    typedef semantics::context context_type;

    context_type&
    context ()
    {
      return context_;
    }

  public:
    path const&
    file () const
    {
      return file_;
    }

    size_t
    line () const
    {
      return line_;
    }

    size_t
    column () const
    {
      return column_;
    }

  public:
    template <typename X>
    bool
    is_a () const
    {
      return dynamic_cast<X const*> (this) != 0;
    }

  public:
    node (path const& file, size_t line, size_t column)
        : file_ (file), line_ (line), column_ (column)
    {
    }

    // For virtual inheritance. Should never be actually called.
    //
    node ()
        : file_ ("")
    {
      std::abort ();
    }

    // Sink functions that allow extensions in the form of one-way
    // edges.
    //
    void
    add_edge_right (edge&)
    {
    }

  private:
    context_type context_;
    path file_;
    size_t line_;
    size_t column_;
  };

  //
  //
  class scope;
  class nameable;


  //
  //
  class names: public edge
  {
  public:
    typedef semantics::scope scope_type;

    typedef std::vector<string> name_list;
    typedef name_list::const_iterator name_iterator;

    // First name.
    //
    string const&
    name () const
    {
      return names_[0];
    }

    name_iterator
    name_begin () const
    {
      return names_.begin ();
    }

    name_iterator
    name_end () const
    {
      return names_.end ();
    }

    scope_type&
    scope () const
    {
      return *scope_;
    }

    nameable&
    named () const
    {
      return *named_;
    }

  public:
    names (string const& name)
    {
      names_.push_back (name);
    }

    names (name_list const& names)
        : names_ (names)
    {
    }

    void
    set_left_node (scope_type& n)
    {
      scope_ = &n;
    }

    void
    set_right_node (nameable& n)
    {
      named_ = &n;
    }

    void
    clear_left_node (scope_type& n)
    {
      assert (scope_ == &n);
      scope_ = 0;
    }

    void
    clear_right_node (nameable& n)
    {
      assert (named_ == &n);
      named_ = 0;
    }

  protected:
    scope_type* scope_;
    nameable* named_;
    name_list names_;
  };


  //
  //
  class nameable: public virtual node
  {
  public:
    typedef semantics::scope scope_type;

    string
    name () const
    {
      return named_->name ();
    }

    string
    fq_name () const;

    scope_type&
    scope ()
    {
      return named_->scope ();
    }

    scope_type const&
    scope () const
    {
      return named_->scope ();
    }

    names&
    named ()
    {
      return *named_;
    }

  public:
    nameable ()
        : named_ (0)
    {
    }

    void
    add_edge_right (names& e)
    {
      assert (named_ == 0);
      named_ = &e;
    }

    void
    remove_edge_right (names& e)
    {
      assert (named_ == &e);
      named_ = 0;
    }

    using node::add_edge_right;

  private:
    names* named_;
  };


  //
  //
  class scope: public virtual nameable
  {
  protected:
    typedef std::list<names*> names_list;
    typedef std::map<names*, names_list::iterator> list_iterator_map;
    typedef std::map<string, names_list> names_map;

  public:
    typedef pointer_iterator<names_list::iterator> names_iterator;
    typedef pointer_iterator<names_list::const_iterator> names_const_iterator;

    typedef
    std::pair<names_const_iterator, names_const_iterator>
    names_iterator_pair;

  public:
    names_iterator
    names_begin ()
    {
      return names_.begin ();
    }

    names_iterator
    names_end ()
    {
      return names_.end ();
    }

    names_const_iterator
    names_begin () const
    {
      return names_.begin ();
    }

    names_const_iterator
    names_end () const
    {
      return names_.end ();
    }

    virtual names_iterator_pair
    find (string const& name) const;

    names_iterator
    find (names&);

  public:
    scope (path const& file, size_t line, size_t column)
        : node (file, line, column)
    {
    }

    scope ()
    {
    }

    void
    add_edge_left (names&);

    void
    remove_edge_left (names&);

    using nameable::add_edge_right;

  private:
    names_list names_;
    list_iterator_map iterator_map_;
    names_map names_map_;
  };

  //
  //
  class type: public node
  {
  public:
    string const&
    name () const
    {
      return name_;
    }

  public:
    type (path const& file, size_t line, size_t column, string const& name)
        : node (file, line, column), name_ (name)
    {
    }

  private:
    string name_;
  };
}

#endif // CLI_SEMANTICS_ELEMENTS_HXX