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[/] [openrisc/] [trunk/] [gnu-dev/] [or1k-gcc/] [gcc/] [cp/] [cxx-pretty-print.c] - Blame information for rev 750

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1 710 jeremybenn
/* Implementation of subroutines for the GNU C++ pretty-printer.
2
   Copyright (C) 2003, 2004, 2005, 2007, 2008,
3
   2009, 2010, 2011 Free Software Foundation, Inc.
4
   Contributed by Gabriel Dos Reis <gdr@integrable-solutions.net>
5
 
6
This file is part of GCC.
7
 
8
GCC is free software; you can redistribute it and/or modify it under
9
the terms of the GNU General Public License as published by the Free
10
Software Foundation; either version 3, or (at your option) any later
11
version.
12
 
13
GCC is distributed in the hope that it will be useful, but WITHOUT ANY
14
WARRANTY; without even the implied warranty of MERCHANTABILITY or
15
FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
16
for more details.
17
 
18
You should have received a copy of the GNU General Public License
19
along with GCC; see the file COPYING3.  If not see
20
<http://www.gnu.org/licenses/>.  */
21
 
22
#include "config.h"
23
#include "system.h"
24
#include "coretypes.h"
25
#include "tm.h"
26
#include "intl.h"
27
#include "cp-tree.h"
28
#include "cxx-pretty-print.h"
29
#include "tree-pretty-print.h"
30
 
31
/* Translate if being used for diagnostics, but not for dump files or
32
   __PRETTY_FUNCTION.  */
33
#define M_(msgid) (pp_translate_identifiers (pp) ? _(msgid) : (msgid))
34
 
35
static void pp_cxx_unqualified_id (cxx_pretty_printer *, tree);
36
static void pp_cxx_nested_name_specifier (cxx_pretty_printer *, tree);
37
static void pp_cxx_qualified_id (cxx_pretty_printer *, tree);
38
static void pp_cxx_assignment_expression (cxx_pretty_printer *, tree);
39
static void pp_cxx_expression (cxx_pretty_printer *, tree);
40
static void pp_cxx_template_argument_list (cxx_pretty_printer *, tree);
41
static void pp_cxx_type_specifier_seq (cxx_pretty_printer *, tree);
42
static void pp_cxx_ptr_operator (cxx_pretty_printer *, tree);
43
static void pp_cxx_type_id (cxx_pretty_printer *, tree);
44
static void pp_cxx_direct_abstract_declarator (cxx_pretty_printer *, tree);
45
static void pp_cxx_declarator (cxx_pretty_printer *, tree);
46
static void pp_cxx_parameter_declaration_clause (cxx_pretty_printer *, tree);
47
static void pp_cxx_abstract_declarator (cxx_pretty_printer *, tree);
48
static void pp_cxx_statement (cxx_pretty_printer *, tree);
49
static void pp_cxx_template_parameter (cxx_pretty_printer *, tree);
50
static void pp_cxx_cast_expression (cxx_pretty_printer *, tree);
51
static void pp_cxx_typeid_expression (cxx_pretty_printer *, tree);
52
 
53
 
54
static inline void
55
pp_cxx_nonconsecutive_character (cxx_pretty_printer *pp, int c)
56
{
57
  const char *p = pp_last_position_in_text (pp);
58
 
59
  if (p != NULL && *p == c)
60
    pp_cxx_whitespace (pp);
61
  pp_character (pp, c);
62
  pp_base (pp)->padding = pp_none;
63
}
64
 
65
#define pp_cxx_storage_class_specifier(PP, T) \
66
   pp_c_storage_class_specifier (pp_c_base (PP), T)
67
#define pp_cxx_expression_list(PP, T)    \
68
   pp_c_expression_list (pp_c_base (PP), T)
69
#define pp_cxx_space_for_pointer_operator(PP, T)  \
70
   pp_c_space_for_pointer_operator (pp_c_base (PP), T)
71
#define pp_cxx_init_declarator(PP, T)    \
72
   pp_c_init_declarator (pp_c_base (PP), T)
73
#define pp_cxx_call_argument_list(PP, T) \
74
   pp_c_call_argument_list (pp_c_base (PP), T)
75
 
76
void
77
pp_cxx_colon_colon (cxx_pretty_printer *pp)
78
{
79
  pp_colon_colon (pp);
80
  pp_base (pp)->padding = pp_none;
81
}
82
 
83
void
84
pp_cxx_begin_template_argument_list (cxx_pretty_printer *pp)
85
{
86
  pp_cxx_nonconsecutive_character (pp, '<');
87
}
88
 
89
void
90
pp_cxx_end_template_argument_list (cxx_pretty_printer *pp)
91
{
92
  pp_cxx_nonconsecutive_character (pp, '>');
93
}
94
 
95
void
96
pp_cxx_separate_with (cxx_pretty_printer *pp, int c)
97
{
98
  pp_separate_with (pp, c);
99
  pp_base (pp)->padding = pp_none;
100
}
101
 
102
/* Expressions.  */
103
 
104
static inline bool
105
is_destructor_name (tree name)
106
{
107
  return name == complete_dtor_identifier
108
    || name == base_dtor_identifier
109
    || name == deleting_dtor_identifier;
110
}
111
 
112
/* conversion-function-id:
113
      operator conversion-type-id
114
 
115
   conversion-type-id:
116
      type-specifier-seq conversion-declarator(opt)
117
 
118
   conversion-declarator:
119
      ptr-operator conversion-declarator(opt)  */
120
 
121
static inline void
122
pp_cxx_conversion_function_id (cxx_pretty_printer *pp, tree t)
123
{
124
  pp_cxx_ws_string (pp, "operator");
125
  pp_cxx_type_specifier_seq (pp, TREE_TYPE (t));
126
}
127
 
128
static inline void
129
pp_cxx_template_id (cxx_pretty_printer *pp, tree t)
130
{
131
  pp_cxx_unqualified_id (pp, TREE_OPERAND (t, 0));
132
  pp_cxx_begin_template_argument_list (pp);
133
  pp_cxx_template_argument_list (pp, TREE_OPERAND (t, 1));
134
  pp_cxx_end_template_argument_list (pp);
135
}
136
 
137
/* Prints the unqualified part of the id-expression T.
138
 
139
   unqualified-id:
140
     identifier
141
     operator-function-id
142
     conversion-function-id
143
     ~ class-name
144
     template-id  */
145
 
146
static void
147
pp_cxx_unqualified_id (cxx_pretty_printer *pp, tree t)
148
{
149
  enum tree_code code = TREE_CODE (t);
150
  switch (code)
151
    {
152
    case RESULT_DECL:
153
      pp_cxx_ws_string (pp, M_("<return-value>"));
154
      break;
155
 
156
    case OVERLOAD:
157
      t = OVL_CURRENT (t);
158
    case VAR_DECL:
159
    case PARM_DECL:
160
    case CONST_DECL:
161
    case TYPE_DECL:
162
    case FUNCTION_DECL:
163
    case NAMESPACE_DECL:
164
    case FIELD_DECL:
165
    case LABEL_DECL:
166
    case USING_DECL:
167
    case TEMPLATE_DECL:
168
      t = DECL_NAME (t);
169
 
170
    case IDENTIFIER_NODE:
171
      if (t == NULL)
172
        pp_cxx_ws_string (pp, M_("<unnamed>"));
173
      else if (IDENTIFIER_TYPENAME_P (t))
174
        pp_cxx_conversion_function_id (pp, t);
175
      else
176
        {
177
          if (is_destructor_name (t))
178
            {
179
              pp_complement (pp);
180
              /* FIXME: Why is this necessary? */
181
              if (TREE_TYPE (t))
182
                t = constructor_name (TREE_TYPE (t));
183
            }
184
          pp_cxx_tree_identifier (pp, t);
185
        }
186
      break;
187
 
188
    case TEMPLATE_ID_EXPR:
189
      pp_cxx_template_id (pp, t);
190
      break;
191
 
192
    case BASELINK:
193
      pp_cxx_unqualified_id (pp, BASELINK_FUNCTIONS (t));
194
      break;
195
 
196
    case RECORD_TYPE:
197
    case UNION_TYPE:
198
    case ENUMERAL_TYPE:
199
    case TYPENAME_TYPE:
200
    case UNBOUND_CLASS_TEMPLATE:
201
      pp_cxx_unqualified_id (pp, TYPE_NAME (t));
202
      if (CLASS_TYPE_P (t) && CLASSTYPE_USE_TEMPLATE (t))
203
        {
204
          pp_cxx_begin_template_argument_list (pp);
205
          pp_cxx_template_argument_list (pp, INNERMOST_TEMPLATE_ARGS
206
                                                 (CLASSTYPE_TI_ARGS (t)));
207
          pp_cxx_end_template_argument_list (pp);
208
        }
209
      break;
210
 
211
    case BIT_NOT_EXPR:
212
      pp_cxx_complement (pp);
213
      pp_cxx_unqualified_id (pp, TREE_OPERAND (t, 0));
214
      break;
215
 
216
    case TEMPLATE_TYPE_PARM:
217
    case TEMPLATE_TEMPLATE_PARM:
218
      if (TYPE_IDENTIFIER (t))
219
        pp_cxx_unqualified_id (pp, TYPE_IDENTIFIER (t));
220
      else
221
        pp_cxx_canonical_template_parameter (pp, t);
222
      break;
223
 
224
    case TEMPLATE_PARM_INDEX:
225
      pp_cxx_unqualified_id (pp, TEMPLATE_PARM_DECL (t));
226
      break;
227
 
228
    case BOUND_TEMPLATE_TEMPLATE_PARM:
229
      pp_cxx_cv_qualifier_seq (pp, t);
230
      pp_cxx_unqualified_id (pp, TYPE_IDENTIFIER (t));
231
      pp_cxx_begin_template_argument_list (pp);
232
      pp_cxx_template_argument_list (pp, TYPE_TI_ARGS (t));
233
      pp_cxx_end_template_argument_list (pp);
234
      break;
235
 
236
    default:
237
      pp_unsupported_tree (pp, t);
238
      break;
239
    }
240
}
241
 
242
/* Pretty-print out the token sequence ":: template" in template codes
243
   where it is needed to "inline declare" the (following) member as
244
   a template.  This situation arises when SCOPE of T is dependent
245
   on template parameters.  */
246
 
247
static inline void
248
pp_cxx_template_keyword_if_needed (cxx_pretty_printer *pp, tree scope, tree t)
249
{
250
  if (TREE_CODE (t) == TEMPLATE_ID_EXPR
251
      && TYPE_P (scope) && dependent_type_p (scope))
252
    pp_cxx_ws_string (pp, "template");
253
}
254
 
255
/* nested-name-specifier:
256
      class-or-namespace-name :: nested-name-specifier(opt)
257
      class-or-namespace-name :: template nested-name-specifier   */
258
 
259
static void
260
pp_cxx_nested_name_specifier (cxx_pretty_printer *pp, tree t)
261
{
262
  if (!SCOPE_FILE_SCOPE_P (t) && t != pp->enclosing_scope)
263
    {
264
      tree scope = TYPE_P (t) ? TYPE_CONTEXT (t) : DECL_CONTEXT (t);
265
      pp_cxx_nested_name_specifier (pp, scope);
266
      pp_cxx_template_keyword_if_needed (pp, scope, t);
267
      pp_cxx_unqualified_id (pp, t);
268
      pp_cxx_colon_colon (pp);
269
    }
270
}
271
 
272
/* qualified-id:
273
      nested-name-specifier template(opt) unqualified-id  */
274
 
275
static void
276
pp_cxx_qualified_id (cxx_pretty_printer *pp, tree t)
277
{
278
  switch (TREE_CODE (t))
279
    {
280
      /* A pointer-to-member is always qualified.  */
281
    case PTRMEM_CST:
282
      pp_cxx_nested_name_specifier (pp, PTRMEM_CST_CLASS (t));
283
      pp_cxx_unqualified_id (pp, PTRMEM_CST_MEMBER (t));
284
      break;
285
 
286
      /* In Standard C++, functions cannot possibly be used as
287
         nested-name-specifiers.  However, there are situations where
288
         is "makes sense" to output the surrounding function name for the
289
         purpose of emphasizing on the scope kind.  Just printing the
290
         function name might not be sufficient as it may be overloaded; so,
291
         we decorate the function with its signature too.
292
         FIXME:  This is probably the wrong pretty-printing for conversion
293
         functions and some function templates.  */
294
    case OVERLOAD:
295
      t = OVL_CURRENT (t);
296
    case FUNCTION_DECL:
297
      if (DECL_FUNCTION_MEMBER_P (t))
298
        pp_cxx_nested_name_specifier (pp, DECL_CONTEXT (t));
299
      pp_cxx_unqualified_id
300
        (pp, DECL_CONSTRUCTOR_P (t) ? DECL_CONTEXT (t) : t);
301
      pp_cxx_parameter_declaration_clause (pp, TREE_TYPE (t));
302
      break;
303
 
304
    case OFFSET_REF:
305
    case SCOPE_REF:
306
      pp_cxx_nested_name_specifier (pp, TREE_OPERAND (t, 0));
307
      pp_cxx_unqualified_id (pp, TREE_OPERAND (t, 1));
308
      break;
309
 
310
    default:
311
      {
312
        tree scope = TYPE_P (t) ? TYPE_CONTEXT (t) : DECL_CONTEXT (t);
313
        if (scope != pp->enclosing_scope)
314
          {
315
            pp_cxx_nested_name_specifier (pp, scope);
316
            pp_cxx_template_keyword_if_needed (pp, scope, t);
317
          }
318
        pp_cxx_unqualified_id (pp, t);
319
      }
320
      break;
321
    }
322
}
323
 
324
 
325
static void
326
pp_cxx_constant (cxx_pretty_printer *pp, tree t)
327
{
328
  switch (TREE_CODE (t))
329
    {
330
    case STRING_CST:
331
      {
332
        const bool in_parens = PAREN_STRING_LITERAL_P (t);
333
        if (in_parens)
334
          pp_cxx_left_paren (pp);
335
        pp_c_constant (pp_c_base (pp), t);
336
        if (in_parens)
337
          pp_cxx_right_paren (pp);
338
      }
339
      break;
340
 
341
    case INTEGER_CST:
342
      if (NULLPTR_TYPE_P (TREE_TYPE (t)))
343
        {
344
          pp_string (pp, "nullptr");
345
          break;
346
        }
347
      /* else fall through.  */
348
 
349
    default:
350
      pp_c_constant (pp_c_base (pp), t);
351
      break;
352
    }
353
}
354
 
355
/* id-expression:
356
      unqualified-id
357
      qualified-id   */
358
 
359
static inline void
360
pp_cxx_id_expression (cxx_pretty_printer *pp, tree t)
361
{
362
  if (TREE_CODE (t) == OVERLOAD)
363
    t = OVL_CURRENT (t);
364
  if (DECL_P (t) && DECL_CONTEXT (t))
365
    pp_cxx_qualified_id (pp, t);
366
  else
367
    pp_cxx_unqualified_id (pp, t);
368
}
369
 
370
/* user-defined literal:
371
      literal ud-suffix  */
372
 
373
void
374
pp_cxx_userdef_literal (cxx_pretty_printer *pp, tree t)
375
{
376
  pp_cxx_constant (pp, USERDEF_LITERAL_VALUE (t));
377
  pp_cxx_id_expression (pp, USERDEF_LITERAL_SUFFIX_ID (t));
378
}
379
 
380
 
381
/* primary-expression:
382
     literal
383
     this
384
     :: identifier
385
     :: operator-function-id
386
     :: qualifier-id
387
     ( expression )
388
     id-expression
389
 
390
   GNU Extensions:
391
     __builtin_va_arg ( assignment-expression , type-id )
392
     __builtin_offsetof ( type-id, offsetof-expression )
393
 
394
     __has_nothrow_assign ( type-id )
395
     __has_nothrow_constructor ( type-id )
396
     __has_nothrow_copy ( type-id )
397
     __has_trivial_assign ( type-id )
398
     __has_trivial_constructor ( type-id )
399
     __has_trivial_copy ( type-id )
400
     __has_trivial_destructor ( type-id )
401
     __has_virtual_destructor ( type-id )
402
     __is_abstract ( type-id )
403
     __is_base_of ( type-id , type-id )
404
     __is_class ( type-id )
405
     __is_convertible_to ( type-id , type-id )
406
     __is_empty ( type-id )
407
     __is_enum ( type-id )
408
     __is_literal_type ( type-id )
409
     __is_pod ( type-id )
410
     __is_polymorphic ( type-id )
411
     __is_std_layout ( type-id )
412
     __is_trivial ( type-id )
413
     __is_union ( type-id )  */
414
 
415
static void
416
pp_cxx_primary_expression (cxx_pretty_printer *pp, tree t)
417
{
418
  switch (TREE_CODE (t))
419
    {
420
    case INTEGER_CST:
421
    case REAL_CST:
422
    case COMPLEX_CST:
423
    case STRING_CST:
424
      pp_cxx_constant (pp, t);
425
      break;
426
 
427
    case USERDEF_LITERAL:
428
      pp_cxx_userdef_literal (pp, t);
429
      break;
430
 
431
    case BASELINK:
432
      t = BASELINK_FUNCTIONS (t);
433
    case VAR_DECL:
434
    case PARM_DECL:
435
    case FIELD_DECL:
436
    case FUNCTION_DECL:
437
    case OVERLOAD:
438
    case CONST_DECL:
439
    case TEMPLATE_DECL:
440
      pp_cxx_id_expression (pp, t);
441
      break;
442
 
443
    case RESULT_DECL:
444
    case TEMPLATE_TYPE_PARM:
445
    case TEMPLATE_TEMPLATE_PARM:
446
    case TEMPLATE_PARM_INDEX:
447
      pp_cxx_unqualified_id (pp, t);
448
      break;
449
 
450
    case STMT_EXPR:
451
      pp_cxx_left_paren (pp);
452
      pp_cxx_statement (pp, STMT_EXPR_STMT (t));
453
      pp_cxx_right_paren (pp);
454
      break;
455
 
456
    case TRAIT_EXPR:
457
      pp_cxx_trait_expression (pp, t);
458
      break;
459
 
460
    case VA_ARG_EXPR:
461
      pp_cxx_va_arg_expression (pp, t);
462
      break;
463
 
464
    case OFFSETOF_EXPR:
465
      pp_cxx_offsetof_expression (pp, t);
466
      break;
467
 
468
    default:
469
      pp_c_primary_expression (pp_c_base (pp), t);
470
      break;
471
    }
472
}
473
 
474
/* postfix-expression:
475
     primary-expression
476
     postfix-expression [ expression ]
477
     postfix-expression ( expression-list(opt) )
478
     simple-type-specifier ( expression-list(opt) )
479
     typename ::(opt) nested-name-specifier identifier ( expression-list(opt) )
480
     typename ::(opt) nested-name-specifier template(opt)
481
                                       template-id ( expression-list(opt) )
482
     postfix-expression . template(opt) ::(opt) id-expression
483
     postfix-expression -> template(opt) ::(opt) id-expression
484
     postfix-expression . pseudo-destructor-name
485
     postfix-expression -> pseudo-destructor-name
486
     postfix-expression ++
487
     postfix-expression --
488
     dynamic_cast < type-id > ( expression )
489
     static_cast < type-id > ( expression )
490
     reinterpret_cast < type-id > ( expression )
491
     const_cast < type-id > ( expression )
492
     typeid ( expression )
493
     typeid ( type-id )  */
494
 
495
static void
496
pp_cxx_postfix_expression (cxx_pretty_printer *pp, tree t)
497
{
498
  enum tree_code code = TREE_CODE (t);
499
 
500
  switch (code)
501
    {
502
    case AGGR_INIT_EXPR:
503
    case CALL_EXPR:
504
      {
505
        tree fun = (code == AGGR_INIT_EXPR ? AGGR_INIT_EXPR_FN (t)
506
                                           : CALL_EXPR_FN (t));
507
        tree saved_scope = pp->enclosing_scope;
508
        bool skipfirst = false;
509
        tree arg;
510
 
511
        if (TREE_CODE (fun) == ADDR_EXPR)
512
          fun = TREE_OPERAND (fun, 0);
513
 
514
        /* In templates, where there is no way to tell whether a given
515
           call uses an actual member function.  So the parser builds
516
           FUN as a COMPONENT_REF or a plain IDENTIFIER_NODE until
517
           instantiation time.  */
518
        if (TREE_CODE (fun) != FUNCTION_DECL)
519
          ;
520
        else if (DECL_NONSTATIC_MEMBER_FUNCTION_P (fun))
521
          {
522
            tree object = (code == AGGR_INIT_EXPR
523
                           ? (AGGR_INIT_VIA_CTOR_P (t)
524
                              ? AGGR_INIT_EXPR_SLOT (t)
525
                              : AGGR_INIT_EXPR_ARG (t, 0))
526
                           : CALL_EXPR_ARG (t, 0));
527
 
528
            while (TREE_CODE (object) == NOP_EXPR)
529
              object = TREE_OPERAND (object, 0);
530
 
531
            if (TREE_CODE (object) == ADDR_EXPR)
532
              object = TREE_OPERAND (object, 0);
533
 
534
            if (TREE_CODE (TREE_TYPE (object)) != POINTER_TYPE)
535
              {
536
                pp_cxx_postfix_expression (pp, object);
537
                pp_cxx_dot (pp);
538
              }
539
            else
540
              {
541
                pp_cxx_postfix_expression (pp, object);
542
                pp_cxx_arrow (pp);
543
              }
544
            skipfirst = true;
545
            pp->enclosing_scope = strip_pointer_operator (TREE_TYPE (object));
546
          }
547
 
548
        pp_cxx_postfix_expression (pp, fun);
549
        pp->enclosing_scope = saved_scope;
550
        pp_cxx_left_paren (pp);
551
        if (code == AGGR_INIT_EXPR)
552
          {
553
            aggr_init_expr_arg_iterator iter;
554
            FOR_EACH_AGGR_INIT_EXPR_ARG (arg, iter, t)
555
              {
556
                if (skipfirst)
557
                  skipfirst = false;
558
                else
559
                  {
560
                    pp_cxx_expression (pp, arg);
561
                    if (more_aggr_init_expr_args_p (&iter))
562
                      pp_cxx_separate_with (pp, ',');
563
                  }
564
              }
565
          }
566
        else
567
          {
568
            call_expr_arg_iterator iter;
569
            FOR_EACH_CALL_EXPR_ARG (arg, iter, t)
570
              {
571
                if (skipfirst)
572
                  skipfirst = false;
573
                else
574
                  {
575
                    pp_cxx_expression (pp, arg);
576
                    if (more_call_expr_args_p (&iter))
577
                      pp_cxx_separate_with (pp, ',');
578
                  }
579
              }
580
          }
581
        pp_cxx_right_paren (pp);
582
      }
583
      if (code == AGGR_INIT_EXPR && AGGR_INIT_VIA_CTOR_P (t))
584
        {
585
          pp_cxx_separate_with (pp, ',');
586
          pp_cxx_postfix_expression (pp, AGGR_INIT_EXPR_SLOT (t));
587
        }
588
      break;
589
 
590
    case BASELINK:
591
    case VAR_DECL:
592
    case PARM_DECL:
593
    case FIELD_DECL:
594
    case FUNCTION_DECL:
595
    case OVERLOAD:
596
    case CONST_DECL:
597
    case TEMPLATE_DECL:
598
    case RESULT_DECL:
599
      pp_cxx_primary_expression (pp, t);
600
      break;
601
 
602
    case DYNAMIC_CAST_EXPR:
603
    case STATIC_CAST_EXPR:
604
    case REINTERPRET_CAST_EXPR:
605
    case CONST_CAST_EXPR:
606
      if (code == DYNAMIC_CAST_EXPR)
607
        pp_cxx_ws_string (pp, "dynamic_cast");
608
      else if (code == STATIC_CAST_EXPR)
609
        pp_cxx_ws_string (pp, "static_cast");
610
      else if (code == REINTERPRET_CAST_EXPR)
611
        pp_cxx_ws_string (pp, "reinterpret_cast");
612
      else
613
        pp_cxx_ws_string (pp, "const_cast");
614
      pp_cxx_begin_template_argument_list (pp);
615
      pp_cxx_type_id (pp, TREE_TYPE (t));
616
      pp_cxx_end_template_argument_list (pp);
617
      pp_left_paren (pp);
618
      pp_cxx_expression (pp, TREE_OPERAND (t, 0));
619
      pp_right_paren (pp);
620
      break;
621
 
622
    case EMPTY_CLASS_EXPR:
623
      pp_cxx_type_id (pp, TREE_TYPE (t));
624
      pp_left_paren (pp);
625
      pp_right_paren (pp);
626
      break;
627
 
628
    case TYPEID_EXPR:
629
      pp_cxx_typeid_expression (pp, t);
630
      break;
631
 
632
    case PSEUDO_DTOR_EXPR:
633
      pp_cxx_postfix_expression (pp, TREE_OPERAND (t, 0));
634
      pp_cxx_dot (pp);
635
      pp_cxx_qualified_id (pp, TREE_OPERAND (t, 1));
636
      pp_cxx_colon_colon (pp);
637
      pp_complement (pp);
638
      pp_cxx_unqualified_id (pp, TREE_OPERAND (t, 2));
639
      break;
640
 
641
    case ARROW_EXPR:
642
      pp_cxx_postfix_expression (pp, TREE_OPERAND (t, 0));
643
      pp_cxx_arrow (pp);
644
      break;
645
 
646
    default:
647
      pp_c_postfix_expression (pp_c_base (pp), t);
648
      break;
649
    }
650
}
651
 
652
/* new-expression:
653
      ::(opt) new new-placement(opt) new-type-id new-initializer(opt)
654
      ::(opt) new new-placement(opt) ( type-id ) new-initializer(opt)
655
 
656
   new-placement:
657
      ( expression-list )
658
 
659
   new-type-id:
660
      type-specifier-seq new-declarator(opt)
661
 
662
   new-declarator:
663
      ptr-operator new-declarator(opt)
664
      direct-new-declarator
665
 
666
   direct-new-declarator
667
      [ expression ]
668
      direct-new-declarator [ constant-expression ]
669
 
670
   new-initializer:
671
      ( expression-list(opt) )  */
672
 
673
static void
674
pp_cxx_new_expression (cxx_pretty_printer *pp, tree t)
675
{
676
  enum tree_code code = TREE_CODE (t);
677
  tree type = TREE_OPERAND (t, 1);
678
  tree init = TREE_OPERAND (t, 2);
679
  switch (code)
680
    {
681
    case NEW_EXPR:
682
    case VEC_NEW_EXPR:
683
      if (NEW_EXPR_USE_GLOBAL (t))
684
        pp_cxx_colon_colon (pp);
685
      pp_cxx_ws_string (pp, "new");
686
      if (TREE_OPERAND (t, 0))
687
        {
688
          pp_cxx_call_argument_list (pp, TREE_OPERAND (t, 0));
689
          pp_space (pp);
690
        }
691
      if (TREE_CODE (type) == ARRAY_REF)
692
        type = build_cplus_array_type
693
          (TREE_OPERAND (type, 0),
694
           build_index_type (fold_build2_loc (input_location,
695
                                          MINUS_EXPR, integer_type_node,
696
                                          TREE_OPERAND (type, 1),
697
                                          integer_one_node)));
698
      pp_cxx_type_id (pp, type);
699
      if (init)
700
        {
701
          pp_left_paren (pp);
702
          if (TREE_CODE (init) == TREE_LIST)
703
            pp_c_expression_list (pp_c_base (pp), init);
704
          else if (init == void_zero_node)
705
            ;                   /* OK, empty initializer list.  */
706
          else
707
            pp_cxx_expression (pp, init);
708
          pp_right_paren (pp);
709
        }
710
      break;
711
 
712
    default:
713
      pp_unsupported_tree (pp, t);
714
    }
715
}
716
 
717
/* delete-expression:
718
      ::(opt) delete cast-expression
719
      ::(opt) delete [ ] cast-expression   */
720
 
721
static void
722
pp_cxx_delete_expression (cxx_pretty_printer *pp, tree t)
723
{
724
  enum tree_code code = TREE_CODE (t);
725
  switch (code)
726
    {
727
    case DELETE_EXPR:
728
    case VEC_DELETE_EXPR:
729
      if (DELETE_EXPR_USE_GLOBAL (t))
730
        pp_cxx_colon_colon (pp);
731
      pp_cxx_ws_string (pp, "delete");
732
      pp_space (pp);
733
      if (code == VEC_DELETE_EXPR
734
          || DELETE_EXPR_USE_VEC (t))
735
        {
736
          pp_left_bracket (pp);
737
          pp_right_bracket (pp);
738
          pp_space (pp);
739
        }
740
      pp_c_cast_expression (pp_c_base (pp), TREE_OPERAND (t, 0));
741
      break;
742
 
743
    default:
744
      pp_unsupported_tree (pp, t);
745
    }
746
}
747
 
748
/* unary-expression:
749
      postfix-expression
750
      ++ cast-expression
751
      -- cast-expression
752
      unary-operator cast-expression
753
      sizeof unary-expression
754
      sizeof ( type-id )
755
      sizeof ... ( identifier )
756
      new-expression
757
      delete-expression
758
 
759
   unary-operator: one of
760
      *   &   +   -  !
761
 
762
   GNU extensions:
763
      __alignof__ unary-expression
764
      __alignof__ ( type-id )  */
765
 
766
static void
767
pp_cxx_unary_expression (cxx_pretty_printer *pp, tree t)
768
{
769
  enum tree_code code = TREE_CODE (t);
770
  switch (code)
771
    {
772
    case NEW_EXPR:
773
    case VEC_NEW_EXPR:
774
      pp_cxx_new_expression (pp, t);
775
      break;
776
 
777
    case DELETE_EXPR:
778
    case VEC_DELETE_EXPR:
779
      pp_cxx_delete_expression (pp, t);
780
      break;
781
 
782
    case SIZEOF_EXPR:
783
      if (PACK_EXPANSION_P (TREE_OPERAND (t, 0)))
784
        {
785
          pp_cxx_ws_string (pp, "sizeof");
786
          pp_cxx_ws_string (pp, "...");
787
          pp_cxx_whitespace (pp);
788
          pp_cxx_left_paren (pp);
789
          if (TYPE_P (TREE_OPERAND (t, 0)))
790
            pp_cxx_type_id (pp, TREE_OPERAND (t, 0));
791
          else
792
            pp_unary_expression (pp, TREE_OPERAND (t, 0));
793
          pp_cxx_right_paren (pp);
794
          break;
795
        }
796
      /* Fall through  */
797
 
798
    case ALIGNOF_EXPR:
799
      pp_cxx_ws_string (pp, code == SIZEOF_EXPR ? "sizeof" : "__alignof__");
800
      pp_cxx_whitespace (pp);
801
      if (TYPE_P (TREE_OPERAND (t, 0)))
802
        {
803
          pp_cxx_left_paren (pp);
804
          pp_cxx_type_id (pp, TREE_OPERAND (t, 0));
805
          pp_cxx_right_paren (pp);
806
        }
807
      else
808
        pp_unary_expression (pp, TREE_OPERAND (t, 0));
809
      break;
810
 
811
    case AT_ENCODE_EXPR:
812
      pp_cxx_ws_string (pp, "@encode");
813
      pp_cxx_whitespace (pp);
814
      pp_cxx_left_paren (pp);
815
      pp_cxx_type_id (pp, TREE_OPERAND (t, 0));
816
      pp_cxx_right_paren (pp);
817
      break;
818
 
819
    case NOEXCEPT_EXPR:
820
      pp_cxx_ws_string (pp, "noexcept");
821
      pp_cxx_whitespace (pp);
822
      pp_cxx_left_paren (pp);
823
      pp_cxx_expression (pp, TREE_OPERAND (t, 0));
824
      pp_cxx_right_paren (pp);
825
      break;
826
 
827
    case UNARY_PLUS_EXPR:
828
      pp_plus (pp);
829
      pp_cxx_cast_expression (pp, TREE_OPERAND (t, 0));
830
      break;
831
 
832
    default:
833
      pp_c_unary_expression (pp_c_base (pp), t);
834
      break;
835
    }
836
}
837
 
838
/* cast-expression:
839
      unary-expression
840
      ( type-id ) cast-expression  */
841
 
842
static void
843
pp_cxx_cast_expression (cxx_pretty_printer *pp, tree t)
844
{
845
  switch (TREE_CODE (t))
846
    {
847
    case CAST_EXPR:
848
    case IMPLICIT_CONV_EXPR:
849
      pp_cxx_type_id (pp, TREE_TYPE (t));
850
      pp_cxx_call_argument_list (pp, TREE_OPERAND (t, 0));
851
      break;
852
 
853
    default:
854
      pp_c_cast_expression (pp_c_base (pp), t);
855
      break;
856
    }
857
}
858
 
859
/* pm-expression:
860
      cast-expression
861
      pm-expression .* cast-expression
862
      pm-expression ->* cast-expression  */
863
 
864
static void
865
pp_cxx_pm_expression (cxx_pretty_printer *pp, tree t)
866
{
867
  switch (TREE_CODE (t))
868
    {
869
      /* Handle unfortunate OFFSET_REF overloading here.  */
870
    case OFFSET_REF:
871
      if (TYPE_P (TREE_OPERAND (t, 0)))
872
        {
873
          pp_cxx_qualified_id (pp, t);
874
          break;
875
        }
876
      /* Else fall through.  */
877
    case MEMBER_REF:
878
    case DOTSTAR_EXPR:
879
      pp_cxx_pm_expression (pp, TREE_OPERAND (t, 0));
880
      if (TREE_CODE (t) == MEMBER_REF)
881
        pp_cxx_arrow (pp);
882
      else
883
        pp_cxx_dot (pp);
884
      pp_star(pp);
885
      pp_cxx_cast_expression (pp, TREE_OPERAND (t, 1));
886
      break;
887
 
888
 
889
    default:
890
      pp_cxx_cast_expression (pp, t);
891
      break;
892
    }
893
}
894
 
895
/* multiplicative-expression:
896
      pm-expression
897
      multiplicative-expression * pm-expression
898
      multiplicative-expression / pm-expression
899
      multiplicative-expression % pm-expression  */
900
 
901
static void
902
pp_cxx_multiplicative_expression (cxx_pretty_printer *pp, tree e)
903
{
904
  enum tree_code code = TREE_CODE (e);
905
  switch (code)
906
    {
907
    case MULT_EXPR:
908
    case TRUNC_DIV_EXPR:
909
    case TRUNC_MOD_EXPR:
910
      pp_cxx_multiplicative_expression (pp, TREE_OPERAND (e, 0));
911
      pp_space (pp);
912
      if (code == MULT_EXPR)
913
        pp_star (pp);
914
      else if (code == TRUNC_DIV_EXPR)
915
        pp_slash (pp);
916
      else
917
        pp_modulo (pp);
918
      pp_space (pp);
919
      pp_cxx_pm_expression (pp, TREE_OPERAND (e, 1));
920
      break;
921
 
922
    default:
923
      pp_cxx_pm_expression (pp, e);
924
      break;
925
    }
926
}
927
 
928
/* conditional-expression:
929
      logical-or-expression
930
      logical-or-expression ?  expression  : assignment-expression  */
931
 
932
static void
933
pp_cxx_conditional_expression (cxx_pretty_printer *pp, tree e)
934
{
935
  if (TREE_CODE (e) == COND_EXPR)
936
    {
937
      pp_c_logical_or_expression (pp_c_base (pp), TREE_OPERAND (e, 0));
938
      pp_space (pp);
939
      pp_question (pp);
940
      pp_space (pp);
941
      pp_cxx_expression (pp, TREE_OPERAND (e, 1));
942
      pp_space (pp);
943
      pp_cxx_assignment_expression (pp, TREE_OPERAND (e, 2));
944
    }
945
  else
946
    pp_c_logical_or_expression (pp_c_base (pp), e);
947
}
948
 
949
/* Pretty-print a compound assignment operator token as indicated by T.  */
950
 
951
static void
952
pp_cxx_assignment_operator (cxx_pretty_printer *pp, tree t)
953
{
954
  const char *op;
955
 
956
  switch (TREE_CODE (t))
957
    {
958
    case NOP_EXPR:
959
      op = "=";
960
      break;
961
 
962
    case PLUS_EXPR:
963
      op = "+=";
964
      break;
965
 
966
    case MINUS_EXPR:
967
      op = "-=";
968
      break;
969
 
970
    case TRUNC_DIV_EXPR:
971
      op = "/=";
972
      break;
973
 
974
    case TRUNC_MOD_EXPR:
975
      op = "%=";
976
      break;
977
 
978
    default:
979
      op = tree_code_name[TREE_CODE (t)];
980
      break;
981
    }
982
 
983
  pp_cxx_ws_string (pp, op);
984
}
985
 
986
 
987
/* assignment-expression:
988
      conditional-expression
989
      logical-or-expression assignment-operator assignment-expression
990
      throw-expression
991
 
992
   throw-expression:
993
       throw assignment-expression(opt)
994
 
995
   assignment-operator: one of
996
      =    *=    /=    %=    +=    -=    >>=    <<=    &=    ^=    |=  */
997
 
998
static void
999
pp_cxx_assignment_expression (cxx_pretty_printer *pp, tree e)
1000
{
1001
  switch (TREE_CODE (e))
1002
    {
1003
    case MODIFY_EXPR:
1004
    case INIT_EXPR:
1005
      pp_c_logical_or_expression (pp_c_base (pp), TREE_OPERAND (e, 0));
1006
      pp_space (pp);
1007
      pp_equal (pp);
1008
      pp_space (pp);
1009
      pp_cxx_assignment_expression (pp, TREE_OPERAND (e, 1));
1010
      break;
1011
 
1012
    case THROW_EXPR:
1013
      pp_cxx_ws_string (pp, "throw");
1014
      if (TREE_OPERAND (e, 0))
1015
        pp_cxx_assignment_expression (pp, TREE_OPERAND (e, 0));
1016
      break;
1017
 
1018
    case MODOP_EXPR:
1019
      pp_c_logical_or_expression (pp_c_base (pp), TREE_OPERAND (e, 0));
1020
      pp_cxx_assignment_operator (pp, TREE_OPERAND (e, 1));
1021
      pp_cxx_assignment_expression (pp, TREE_OPERAND (e, 2));
1022
      break;
1023
 
1024
    default:
1025
      pp_cxx_conditional_expression (pp, e);
1026
      break;
1027
    }
1028
}
1029
 
1030
static void
1031
pp_cxx_expression (cxx_pretty_printer *pp, tree t)
1032
{
1033
  switch (TREE_CODE (t))
1034
    {
1035
    case STRING_CST:
1036
    case INTEGER_CST:
1037
    case REAL_CST:
1038
    case COMPLEX_CST:
1039
      pp_cxx_constant (pp, t);
1040
      break;
1041
 
1042
    case USERDEF_LITERAL:
1043
      pp_cxx_userdef_literal (pp, t);
1044
      break;
1045
 
1046
    case RESULT_DECL:
1047
      pp_cxx_unqualified_id (pp, t);
1048
      break;
1049
 
1050
#if 0
1051
    case OFFSET_REF:
1052
#endif
1053
    case SCOPE_REF:
1054
    case PTRMEM_CST:
1055
      pp_cxx_qualified_id (pp, t);
1056
      break;
1057
 
1058
    case OVERLOAD:
1059
      t = OVL_CURRENT (t);
1060
    case VAR_DECL:
1061
    case PARM_DECL:
1062
    case FIELD_DECL:
1063
    case CONST_DECL:
1064
    case FUNCTION_DECL:
1065
    case BASELINK:
1066
    case TEMPLATE_DECL:
1067
    case TEMPLATE_TYPE_PARM:
1068
    case TEMPLATE_PARM_INDEX:
1069
    case TEMPLATE_TEMPLATE_PARM:
1070
    case STMT_EXPR:
1071
      pp_cxx_primary_expression (pp, t);
1072
      break;
1073
 
1074
    case CALL_EXPR:
1075
    case DYNAMIC_CAST_EXPR:
1076
    case STATIC_CAST_EXPR:
1077
    case REINTERPRET_CAST_EXPR:
1078
    case CONST_CAST_EXPR:
1079
#if 0
1080
    case MEMBER_REF:
1081
#endif
1082
    case EMPTY_CLASS_EXPR:
1083
    case TYPEID_EXPR:
1084
    case PSEUDO_DTOR_EXPR:
1085
    case AGGR_INIT_EXPR:
1086
    case ARROW_EXPR:
1087
      pp_cxx_postfix_expression (pp, t);
1088
      break;
1089
 
1090
    case NEW_EXPR:
1091
    case VEC_NEW_EXPR:
1092
      pp_cxx_new_expression (pp, t);
1093
      break;
1094
 
1095
    case DELETE_EXPR:
1096
    case VEC_DELETE_EXPR:
1097
      pp_cxx_delete_expression (pp, t);
1098
      break;
1099
 
1100
    case SIZEOF_EXPR:
1101
    case ALIGNOF_EXPR:
1102
    case NOEXCEPT_EXPR:
1103
      pp_cxx_unary_expression (pp, t);
1104
      break;
1105
 
1106
    case CAST_EXPR:
1107
    case IMPLICIT_CONV_EXPR:
1108
      pp_cxx_cast_expression (pp, t);
1109
      break;
1110
 
1111
    case OFFSET_REF:
1112
    case MEMBER_REF:
1113
    case DOTSTAR_EXPR:
1114
      pp_cxx_pm_expression (pp, t);
1115
      break;
1116
 
1117
    case MULT_EXPR:
1118
    case TRUNC_DIV_EXPR:
1119
    case TRUNC_MOD_EXPR:
1120
      pp_cxx_multiplicative_expression (pp, t);
1121
      break;
1122
 
1123
    case COND_EXPR:
1124
      pp_cxx_conditional_expression (pp, t);
1125
      break;
1126
 
1127
    case MODIFY_EXPR:
1128
    case INIT_EXPR:
1129
    case THROW_EXPR:
1130
    case MODOP_EXPR:
1131
      pp_cxx_assignment_expression (pp, t);
1132
      break;
1133
 
1134
    case NON_DEPENDENT_EXPR:
1135
    case MUST_NOT_THROW_EXPR:
1136
      pp_cxx_expression (pp, TREE_OPERAND (t, 0));
1137
      break;
1138
 
1139
    case EXPR_PACK_EXPANSION:
1140
      pp_cxx_expression (pp, PACK_EXPANSION_PATTERN (t));
1141
      pp_cxx_ws_string (pp, "...");
1142
      break;
1143
 
1144
    case TEMPLATE_ID_EXPR:
1145
      pp_cxx_template_id (pp, t);
1146
      break;
1147
 
1148
    case NONTYPE_ARGUMENT_PACK:
1149
      {
1150
        tree args = ARGUMENT_PACK_ARGS (t);
1151
        int i, len = TREE_VEC_LENGTH (args);
1152
        for (i = 0; i < len; ++i)
1153
          {
1154
            if (i > 0)
1155
              pp_cxx_separate_with (pp, ',');
1156
            pp_cxx_expression (pp, TREE_VEC_ELT (args, i));
1157
          }
1158
      }
1159
      break;
1160
 
1161
    default:
1162
      pp_c_expression (pp_c_base (pp), t);
1163
      break;
1164
    }
1165
}
1166
 
1167
 
1168
/* Declarations.  */
1169
 
1170
/* function-specifier:
1171
      inline
1172
      virtual
1173
      explicit   */
1174
 
1175
static void
1176
pp_cxx_function_specifier (cxx_pretty_printer *pp, tree t)
1177
{
1178
  switch (TREE_CODE (t))
1179
    {
1180
    case FUNCTION_DECL:
1181
      if (DECL_VIRTUAL_P (t))
1182
        pp_cxx_ws_string (pp, "virtual");
1183
      else if (DECL_CONSTRUCTOR_P (t) && DECL_NONCONVERTING_P (t))
1184
        pp_cxx_ws_string (pp, "explicit");
1185
      else
1186
        pp_c_function_specifier (pp_c_base (pp), t);
1187
 
1188
    default:
1189
      break;
1190
    }
1191
}
1192
 
1193
/* decl-specifier-seq:
1194
      decl-specifier-seq(opt) decl-specifier
1195
 
1196
   decl-specifier:
1197
      storage-class-specifier
1198
      type-specifier
1199
      function-specifier
1200
      friend
1201
      typedef  */
1202
 
1203
static void
1204
pp_cxx_decl_specifier_seq (cxx_pretty_printer *pp, tree t)
1205
{
1206
  switch (TREE_CODE (t))
1207
    {
1208
    case VAR_DECL:
1209
    case PARM_DECL:
1210
    case CONST_DECL:
1211
    case FIELD_DECL:
1212
      pp_cxx_storage_class_specifier (pp, t);
1213
      pp_cxx_decl_specifier_seq (pp, TREE_TYPE (t));
1214
      break;
1215
 
1216
    case TYPE_DECL:
1217
      pp_cxx_ws_string (pp, "typedef");
1218
      pp_cxx_decl_specifier_seq (pp, TREE_TYPE (t));
1219
      break;
1220
 
1221
    case FUNCTION_DECL:
1222
      /* Constructors don't have return types.  And conversion functions
1223
         do not have a type-specifier in their return types.  */
1224
      if (DECL_CONSTRUCTOR_P (t) || DECL_CONV_FN_P (t))
1225
        pp_cxx_function_specifier (pp, t);
1226
      else if (DECL_NONSTATIC_MEMBER_FUNCTION_P (t))
1227
        pp_cxx_decl_specifier_seq (pp, TREE_TYPE (TREE_TYPE (t)));
1228
      else
1229
        default:
1230
      pp_c_declaration_specifiers (pp_c_base (pp), t);
1231
      break;
1232
    }
1233
}
1234
 
1235
/* simple-type-specifier:
1236
      ::(opt) nested-name-specifier(opt) type-name
1237
      ::(opt) nested-name-specifier(opt) template(opt) template-id
1238
      char
1239
      wchar_t
1240
      bool
1241
      short
1242
      int
1243
      long
1244
      signed
1245
      unsigned
1246
      float
1247
      double
1248
      void  */
1249
 
1250
static void
1251
pp_cxx_simple_type_specifier (cxx_pretty_printer *pp, tree t)
1252
{
1253
  switch (TREE_CODE (t))
1254
    {
1255
    case RECORD_TYPE:
1256
    case UNION_TYPE:
1257
    case ENUMERAL_TYPE:
1258
      pp_cxx_qualified_id (pp, t);
1259
      break;
1260
 
1261
    case TEMPLATE_TYPE_PARM:
1262
    case TEMPLATE_TEMPLATE_PARM:
1263
    case TEMPLATE_PARM_INDEX:
1264
      pp_cxx_unqualified_id (pp, t);
1265
      break;
1266
 
1267
    case TYPENAME_TYPE:
1268
      pp_cxx_ws_string (pp, "typename");
1269
      pp_cxx_nested_name_specifier (pp, TYPE_CONTEXT (t));
1270
      pp_cxx_unqualified_id (pp, TYPE_NAME (t));
1271
      break;
1272
 
1273
    default:
1274
      pp_c_type_specifier (pp_c_base (pp), t);
1275
      break;
1276
    }
1277
}
1278
 
1279
/* type-specifier-seq:
1280
      type-specifier type-specifier-seq(opt)
1281
 
1282
   type-specifier:
1283
      simple-type-specifier
1284
      class-specifier
1285
      enum-specifier
1286
      elaborated-type-specifier
1287
      cv-qualifier   */
1288
 
1289
static void
1290
pp_cxx_type_specifier_seq (cxx_pretty_printer *pp, tree t)
1291
{
1292
  switch (TREE_CODE (t))
1293
    {
1294
    case TEMPLATE_DECL:
1295
    case TEMPLATE_TYPE_PARM:
1296
    case TEMPLATE_TEMPLATE_PARM:
1297
    case TYPE_DECL:
1298
    case BOUND_TEMPLATE_TEMPLATE_PARM:
1299
      pp_cxx_cv_qualifier_seq (pp, t);
1300
      pp_cxx_simple_type_specifier (pp, t);
1301
      break;
1302
 
1303
    case METHOD_TYPE:
1304
      pp_cxx_type_specifier_seq (pp, TREE_TYPE (t));
1305
      pp_cxx_space_for_pointer_operator (pp, TREE_TYPE (t));
1306
      pp_cxx_nested_name_specifier (pp, TYPE_METHOD_BASETYPE (t));
1307
      break;
1308
 
1309
    case DECLTYPE_TYPE:
1310
      pp_cxx_ws_string (pp, "decltype");
1311
      pp_cxx_left_paren (pp);
1312
      pp_cxx_expression (pp, DECLTYPE_TYPE_EXPR (t));
1313
      pp_cxx_right_paren (pp);
1314
      break;
1315
 
1316
    case RECORD_TYPE:
1317
      if (TYPE_PTRMEMFUNC_P (t))
1318
        {
1319
          tree pfm = TYPE_PTRMEMFUNC_FN_TYPE (t);
1320
          pp_cxx_decl_specifier_seq (pp, TREE_TYPE (TREE_TYPE (pfm)));
1321
          pp_cxx_whitespace (pp);
1322
          pp_cxx_ptr_operator (pp, t);
1323
          break;
1324
        }
1325
      /* else fall through */
1326
 
1327
    default:
1328
      if (!(TREE_CODE (t) == FUNCTION_DECL && DECL_CONSTRUCTOR_P (t)))
1329
        pp_c_specifier_qualifier_list (pp_c_base (pp), t);
1330
    }
1331
}
1332
 
1333
/* ptr-operator:
1334
      * cv-qualifier-seq(opt)
1335
      &
1336
      ::(opt) nested-name-specifier * cv-qualifier-seq(opt)  */
1337
 
1338
static void
1339
pp_cxx_ptr_operator (cxx_pretty_printer *pp, tree t)
1340
{
1341
  if (!TYPE_P (t) && TREE_CODE (t) != TYPE_DECL)
1342
    t = TREE_TYPE (t);
1343
  switch (TREE_CODE (t))
1344
    {
1345
    case REFERENCE_TYPE:
1346
    case POINTER_TYPE:
1347
      if (TREE_CODE (TREE_TYPE (t)) == POINTER_TYPE
1348
          || TYPE_PTR_TO_MEMBER_P (TREE_TYPE (t)))
1349
        pp_cxx_ptr_operator (pp, TREE_TYPE (t));
1350
      pp_c_attributes_display (pp_c_base (pp),
1351
                               TYPE_ATTRIBUTES (TREE_TYPE (t)));
1352
      if (TREE_CODE (t) == POINTER_TYPE)
1353
        {
1354
          pp_star (pp);
1355
          pp_cxx_cv_qualifier_seq (pp, t);
1356
        }
1357
      else
1358
        pp_ampersand (pp);
1359
      break;
1360
 
1361
    case RECORD_TYPE:
1362
      if (TYPE_PTRMEMFUNC_P (t))
1363
        {
1364
          pp_cxx_left_paren (pp);
1365
          pp_cxx_nested_name_specifier (pp, TYPE_PTRMEMFUNC_OBJECT_TYPE (t));
1366
          pp_star (pp);
1367
          break;
1368
        }
1369
    case OFFSET_TYPE:
1370
      if (TYPE_PTR_TO_MEMBER_P (t))
1371
        {
1372
          if (TREE_CODE (TREE_TYPE (t)) == ARRAY_TYPE)
1373
            pp_cxx_left_paren (pp);
1374
          pp_cxx_nested_name_specifier (pp, TYPE_PTRMEM_CLASS_TYPE (t));
1375
          pp_star (pp);
1376
          pp_cxx_cv_qualifier_seq (pp, t);
1377
          break;
1378
        }
1379
      /* else fall through.  */
1380
 
1381
    default:
1382
      pp_unsupported_tree (pp, t);
1383
      break;
1384
    }
1385
}
1386
 
1387
static inline tree
1388
pp_cxx_implicit_parameter_type (tree mf)
1389
{
1390
  return class_of_this_parm (TREE_TYPE (mf));
1391
}
1392
 
1393
/*
1394
   parameter-declaration:
1395
      decl-specifier-seq declarator
1396
      decl-specifier-seq declarator = assignment-expression
1397
      decl-specifier-seq abstract-declarator(opt)
1398
      decl-specifier-seq abstract-declarator(opt) assignment-expression  */
1399
 
1400
static inline void
1401
pp_cxx_parameter_declaration (cxx_pretty_printer *pp, tree t)
1402
{
1403
  pp_cxx_decl_specifier_seq (pp, t);
1404
  if (TYPE_P (t))
1405
    pp_cxx_abstract_declarator (pp, t);
1406
  else
1407
    pp_cxx_declarator (pp, t);
1408
}
1409
 
1410
/* parameter-declaration-clause:
1411
      parameter-declaration-list(opt) ...(opt)
1412
      parameter-declaration-list , ...
1413
 
1414
   parameter-declaration-list:
1415
      parameter-declaration
1416
      parameter-declaration-list , parameter-declaration  */
1417
 
1418
static void
1419
pp_cxx_parameter_declaration_clause (cxx_pretty_printer *pp, tree t)
1420
{
1421
  tree args = TYPE_P (t) ? NULL : FUNCTION_FIRST_USER_PARM (t);
1422
  tree types =
1423
    TYPE_P (t) ? TYPE_ARG_TYPES (t) : FUNCTION_FIRST_USER_PARMTYPE (t);
1424
  const bool abstract = args == NULL
1425
    || pp_c_base (pp)->flags & pp_c_flag_abstract;
1426
  bool first = true;
1427
 
1428
  /* Skip artificial parameter for nonstatic member functions.  */
1429
  if (TREE_CODE (t) == METHOD_TYPE)
1430
    types = TREE_CHAIN (types);
1431
 
1432
  pp_cxx_left_paren (pp);
1433
  for (; args; args = TREE_CHAIN (args), types = TREE_CHAIN (types))
1434
    {
1435
      if (!first)
1436
        pp_cxx_separate_with (pp, ',');
1437
      first = false;
1438
      pp_cxx_parameter_declaration (pp, abstract ? TREE_VALUE (types) : args);
1439
      if (!abstract && pp_c_base (pp)->flags & pp_cxx_flag_default_argument)
1440
        {
1441
          pp_cxx_whitespace (pp);
1442
          pp_equal (pp);
1443
          pp_cxx_whitespace (pp);
1444
          pp_cxx_assignment_expression (pp, TREE_PURPOSE (types));
1445
        }
1446
    }
1447
  pp_cxx_right_paren (pp);
1448
}
1449
 
1450
/* exception-specification:
1451
      throw ( type-id-list(opt) )
1452
 
1453
   type-id-list
1454
      type-id
1455
      type-id-list , type-id   */
1456
 
1457
static void
1458
pp_cxx_exception_specification (cxx_pretty_printer *pp, tree t)
1459
{
1460
  tree ex_spec = TYPE_RAISES_EXCEPTIONS (t);
1461
  bool need_comma = false;
1462
 
1463
  if (ex_spec == NULL)
1464
    return;
1465
  if (TREE_PURPOSE (ex_spec))
1466
    {
1467
      pp_cxx_ws_string (pp, "noexcept");
1468
      pp_cxx_whitespace (pp);
1469
      pp_cxx_left_paren (pp);
1470
      if (DEFERRED_NOEXCEPT_SPEC_P (ex_spec))
1471
        pp_cxx_ws_string (pp, "<uninstantiated>");
1472
      else
1473
        pp_cxx_expression (pp, TREE_PURPOSE (ex_spec));
1474
      pp_cxx_right_paren (pp);
1475
      return;
1476
    }
1477
  pp_cxx_ws_string (pp, "throw");
1478
  pp_cxx_left_paren (pp);
1479
  for (; ex_spec && TREE_VALUE (ex_spec); ex_spec = TREE_CHAIN (ex_spec))
1480
    {
1481
      tree type = TREE_VALUE (ex_spec);
1482
      tree argpack = NULL_TREE;
1483
      int i, len = 1;
1484
 
1485
      if (ARGUMENT_PACK_P (type))
1486
        {
1487
          argpack = ARGUMENT_PACK_ARGS (type);
1488
          len = TREE_VEC_LENGTH (argpack);
1489
        }
1490
 
1491
      for (i = 0; i < len; ++i)
1492
        {
1493
          if (argpack)
1494
            type = TREE_VEC_ELT (argpack, i);
1495
 
1496
          if (need_comma)
1497
            pp_cxx_separate_with (pp, ',');
1498
          else
1499
            need_comma = true;
1500
 
1501
          pp_cxx_type_id (pp, type);
1502
        }
1503
    }
1504
  pp_cxx_right_paren (pp);
1505
}
1506
 
1507
/* direct-declarator:
1508
      declarator-id
1509
      direct-declarator ( parameter-declaration-clause ) cv-qualifier-seq(opt)
1510
                                            exception-specification(opt)
1511
      direct-declaration [ constant-expression(opt) ]
1512
      ( declarator )  */
1513
 
1514
static void
1515
pp_cxx_direct_declarator (cxx_pretty_printer *pp, tree t)
1516
{
1517
  switch (TREE_CODE (t))
1518
    {
1519
    case VAR_DECL:
1520
    case PARM_DECL:
1521
    case CONST_DECL:
1522
    case FIELD_DECL:
1523
      if (DECL_NAME (t))
1524
        {
1525
          pp_cxx_space_for_pointer_operator (pp, TREE_TYPE (t));
1526
 
1527
          if ((TREE_CODE (t) == PARM_DECL && FUNCTION_PARAMETER_PACK_P (t))
1528
              || template_parameter_pack_p (t))
1529
            /* A function parameter pack or non-type template
1530
               parameter pack.  */
1531
            pp_cxx_ws_string (pp, "...");
1532
 
1533
          pp_cxx_id_expression (pp, DECL_NAME (t));
1534
        }
1535
      pp_cxx_abstract_declarator (pp, TREE_TYPE (t));
1536
      break;
1537
 
1538
    case FUNCTION_DECL:
1539
      pp_cxx_space_for_pointer_operator (pp, TREE_TYPE (TREE_TYPE (t)));
1540
      pp_cxx_id_expression (pp, t);
1541
      pp_cxx_parameter_declaration_clause (pp, t);
1542
 
1543
      if (DECL_NONSTATIC_MEMBER_FUNCTION_P (t))
1544
        {
1545
          pp_base (pp)->padding = pp_before;
1546
          pp_cxx_cv_qualifier_seq (pp, pp_cxx_implicit_parameter_type (t));
1547
        }
1548
 
1549
      pp_cxx_exception_specification (pp, TREE_TYPE (t));
1550
      break;
1551
 
1552
    case TYPENAME_TYPE:
1553
    case TEMPLATE_DECL:
1554
    case TEMPLATE_TYPE_PARM:
1555
    case TEMPLATE_PARM_INDEX:
1556
    case TEMPLATE_TEMPLATE_PARM:
1557
      break;
1558
 
1559
    default:
1560
      pp_c_direct_declarator (pp_c_base (pp), t);
1561
      break;
1562
    }
1563
}
1564
 
1565
/* declarator:
1566
   direct-declarator
1567
   ptr-operator declarator  */
1568
 
1569
static void
1570
pp_cxx_declarator (cxx_pretty_printer *pp, tree t)
1571
{
1572
  pp_cxx_direct_declarator (pp, t);
1573
}
1574
 
1575
/* ctor-initializer:
1576
      : mem-initializer-list
1577
 
1578
   mem-initializer-list:
1579
      mem-initializer
1580
      mem-initializer , mem-initializer-list
1581
 
1582
   mem-initializer:
1583
      mem-initializer-id ( expression-list(opt) )
1584
 
1585
   mem-initializer-id:
1586
      ::(opt) nested-name-specifier(opt) class-name
1587
      identifier   */
1588
 
1589
static void
1590
pp_cxx_ctor_initializer (cxx_pretty_printer *pp, tree t)
1591
{
1592
  t = TREE_OPERAND (t, 0);
1593
  pp_cxx_whitespace (pp);
1594
  pp_colon (pp);
1595
  pp_cxx_whitespace (pp);
1596
  for (; t; t = TREE_CHAIN (t))
1597
    {
1598
      tree purpose = TREE_PURPOSE (t);
1599
      bool is_pack = PACK_EXPANSION_P (purpose);
1600
 
1601
      if (is_pack)
1602
        pp_cxx_primary_expression (pp, PACK_EXPANSION_PATTERN (purpose));
1603
      else
1604
        pp_cxx_primary_expression (pp, purpose);
1605
      pp_cxx_call_argument_list (pp, TREE_VALUE (t));
1606
      if (is_pack)
1607
        pp_cxx_ws_string (pp, "...");
1608
      if (TREE_CHAIN (t))
1609
        pp_cxx_separate_with (pp, ',');
1610
    }
1611
}
1612
 
1613
/* function-definition:
1614
      decl-specifier-seq(opt) declarator ctor-initializer(opt) function-body
1615
      decl-specifier-seq(opt) declarator function-try-block  */
1616
 
1617
static void
1618
pp_cxx_function_definition (cxx_pretty_printer *pp, tree t)
1619
{
1620
  tree saved_scope = pp->enclosing_scope;
1621
  pp_cxx_decl_specifier_seq (pp, t);
1622
  pp_cxx_declarator (pp, t);
1623
  pp_needs_newline (pp) = true;
1624
  pp->enclosing_scope = DECL_CONTEXT (t);
1625
  if (DECL_SAVED_TREE (t))
1626
    pp_cxx_statement (pp, DECL_SAVED_TREE (t));
1627
  else
1628
    {
1629
      pp_cxx_semicolon (pp);
1630
      pp_needs_newline (pp) = true;
1631
    }
1632
  pp_flush (pp);
1633
  pp->enclosing_scope = saved_scope;
1634
}
1635
 
1636
/* abstract-declarator:
1637
      ptr-operator abstract-declarator(opt)
1638
      direct-abstract-declarator  */
1639
 
1640
static void
1641
pp_cxx_abstract_declarator (cxx_pretty_printer *pp, tree t)
1642
{
1643
  if (TYPE_PTRMEM_P (t) || TYPE_PTRMEMFUNC_P (t))
1644
    pp_cxx_right_paren (pp);
1645
  else if (POINTER_TYPE_P (t))
1646
    {
1647
      if (TREE_CODE (TREE_TYPE (t)) == ARRAY_TYPE
1648
          || TREE_CODE (TREE_TYPE (t)) == FUNCTION_TYPE)
1649
        pp_cxx_right_paren (pp);
1650
      t = TREE_TYPE (t);
1651
    }
1652
  pp_cxx_direct_abstract_declarator (pp, t);
1653
}
1654
 
1655
/* direct-abstract-declarator:
1656
      direct-abstract-declarator(opt) ( parameter-declaration-clause )
1657
                           cv-qualifier-seq(opt) exception-specification(opt)
1658
      direct-abstract-declarator(opt) [ constant-expression(opt) ]
1659
      ( abstract-declarator )  */
1660
 
1661
static void
1662
pp_cxx_direct_abstract_declarator (cxx_pretty_printer *pp, tree t)
1663
{
1664
  switch (TREE_CODE (t))
1665
    {
1666
    case REFERENCE_TYPE:
1667
      pp_cxx_abstract_declarator (pp, t);
1668
      break;
1669
 
1670
    case RECORD_TYPE:
1671
      if (TYPE_PTRMEMFUNC_P (t))
1672
        pp_cxx_direct_abstract_declarator (pp, TYPE_PTRMEMFUNC_FN_TYPE (t));
1673
      break;
1674
 
1675
    case METHOD_TYPE:
1676
    case FUNCTION_TYPE:
1677
      pp_cxx_parameter_declaration_clause (pp, t);
1678
      pp_cxx_direct_abstract_declarator (pp, TREE_TYPE (t));
1679
      if (TREE_CODE (t) == METHOD_TYPE)
1680
        {
1681
          pp_base (pp)->padding = pp_before;
1682
          pp_cxx_cv_qualifier_seq (pp, class_of_this_parm (t));
1683
        }
1684
      pp_cxx_exception_specification (pp, t);
1685
      break;
1686
 
1687
    case TYPENAME_TYPE:
1688
    case TEMPLATE_TYPE_PARM:
1689
    case TEMPLATE_TEMPLATE_PARM:
1690
    case BOUND_TEMPLATE_TEMPLATE_PARM:
1691
    case UNBOUND_CLASS_TEMPLATE:
1692
      break;
1693
 
1694
    default:
1695
      pp_c_direct_abstract_declarator (pp_c_base (pp), t);
1696
      break;
1697
    }
1698
}
1699
 
1700
/* type-id:
1701
     type-specifier-seq abstract-declarator(opt) */
1702
 
1703
static void
1704
pp_cxx_type_id (cxx_pretty_printer *pp, tree t)
1705
{
1706
  pp_flags saved_flags = pp_c_base (pp)->flags;
1707
  pp_c_base (pp)->flags |= pp_c_flag_abstract;
1708
 
1709
  switch (TREE_CODE (t))
1710
    {
1711
    case TYPE_DECL:
1712
    case UNION_TYPE:
1713
    case RECORD_TYPE:
1714
    case ENUMERAL_TYPE:
1715
    case TYPENAME_TYPE:
1716
    case BOUND_TEMPLATE_TEMPLATE_PARM:
1717
    case UNBOUND_CLASS_TEMPLATE:
1718
    case TEMPLATE_TEMPLATE_PARM:
1719
    case TEMPLATE_TYPE_PARM:
1720
    case TEMPLATE_PARM_INDEX:
1721
    case TEMPLATE_DECL:
1722
    case TYPEOF_TYPE:
1723
    case UNDERLYING_TYPE:
1724
    case DECLTYPE_TYPE:
1725
    case TEMPLATE_ID_EXPR:
1726
      pp_cxx_type_specifier_seq (pp, t);
1727
      break;
1728
 
1729
    case TYPE_PACK_EXPANSION:
1730
      pp_cxx_type_id (pp, PACK_EXPANSION_PATTERN (t));
1731
      pp_cxx_ws_string (pp, "...");
1732
      break;
1733
 
1734
    default:
1735
      pp_c_type_id (pp_c_base (pp), t);
1736
      break;
1737
    }
1738
 
1739
  pp_c_base (pp)->flags = saved_flags;
1740
}
1741
 
1742
/* template-argument-list:
1743
      template-argument ...(opt)
1744
      template-argument-list, template-argument ...(opt)
1745
 
1746
   template-argument:
1747
      assignment-expression
1748
      type-id
1749
      template-name  */
1750
 
1751
static void
1752
pp_cxx_template_argument_list (cxx_pretty_printer *pp, tree t)
1753
{
1754
  int i;
1755
  bool need_comma = false;
1756
 
1757
  if (t == NULL)
1758
    return;
1759
  for (i = 0; i < TREE_VEC_LENGTH (t); ++i)
1760
    {
1761
      tree arg = TREE_VEC_ELT (t, i);
1762
      tree argpack = NULL_TREE;
1763
      int idx, len = 1;
1764
 
1765
      if (ARGUMENT_PACK_P (arg))
1766
        {
1767
          argpack = ARGUMENT_PACK_ARGS (arg);
1768
          len = TREE_VEC_LENGTH (argpack);
1769
        }
1770
 
1771
      for (idx = 0; idx < len; idx++)
1772
        {
1773
          if (argpack)
1774
            arg = TREE_VEC_ELT (argpack, idx);
1775
 
1776
          if (need_comma)
1777
            pp_cxx_separate_with (pp, ',');
1778
          else
1779
            need_comma = true;
1780
 
1781
          if (TYPE_P (arg) || (TREE_CODE (arg) == TEMPLATE_DECL
1782
                               && TYPE_P (DECL_TEMPLATE_RESULT (arg))))
1783
            pp_cxx_type_id (pp, arg);
1784
          else
1785
            pp_cxx_expression (pp, arg);
1786
        }
1787
    }
1788
}
1789
 
1790
 
1791
static void
1792
pp_cxx_exception_declaration (cxx_pretty_printer *pp, tree t)
1793
{
1794
  t = DECL_EXPR_DECL (t);
1795
  pp_cxx_type_specifier_seq (pp, t);
1796
  if (TYPE_P (t))
1797
    pp_cxx_abstract_declarator (pp, t);
1798
  else
1799
    pp_cxx_declarator (pp, t);
1800
}
1801
 
1802
/* Statements.  */
1803
 
1804
static void
1805
pp_cxx_statement (cxx_pretty_printer *pp, tree t)
1806
{
1807
  switch (TREE_CODE (t))
1808
    {
1809
    case CTOR_INITIALIZER:
1810
      pp_cxx_ctor_initializer (pp, t);
1811
      break;
1812
 
1813
    case USING_STMT:
1814
      pp_cxx_ws_string (pp, "using");
1815
      pp_cxx_ws_string (pp, "namespace");
1816
      if (DECL_CONTEXT (t))
1817
        pp_cxx_nested_name_specifier (pp, DECL_CONTEXT (t));
1818
      pp_cxx_qualified_id (pp, USING_STMT_NAMESPACE (t));
1819
      break;
1820
 
1821
    case USING_DECL:
1822
      pp_cxx_ws_string (pp, "using");
1823
      pp_cxx_nested_name_specifier (pp, USING_DECL_SCOPE (t));
1824
      pp_cxx_unqualified_id (pp, DECL_NAME (t));
1825
      break;
1826
 
1827
    case EH_SPEC_BLOCK:
1828
      break;
1829
 
1830
      /* try-block:
1831
            try compound-statement handler-seq  */
1832
    case TRY_BLOCK:
1833
      pp_maybe_newline_and_indent (pp, 0);
1834
      pp_cxx_ws_string (pp, "try");
1835
      pp_newline_and_indent (pp, 3);
1836
      pp_cxx_statement (pp, TRY_STMTS (t));
1837
      pp_newline_and_indent (pp, -3);
1838
      if (CLEANUP_P (t))
1839
        ;
1840
      else
1841
        pp_cxx_statement (pp, TRY_HANDLERS (t));
1842
      break;
1843
 
1844
      /*
1845
         handler-seq:
1846
            handler handler-seq(opt)
1847
 
1848
         handler:
1849
         catch ( exception-declaration ) compound-statement
1850
 
1851
         exception-declaration:
1852
            type-specifier-seq declarator
1853
            type-specifier-seq abstract-declarator
1854
            ...   */
1855
    case HANDLER:
1856
      pp_cxx_ws_string (pp, "catch");
1857
      pp_cxx_left_paren (pp);
1858
      pp_cxx_exception_declaration (pp, HANDLER_PARMS (t));
1859
      pp_cxx_right_paren (pp);
1860
      pp_indentation (pp) += 3;
1861
      pp_needs_newline (pp) = true;
1862
      pp_cxx_statement (pp, HANDLER_BODY (t));
1863
      pp_indentation (pp) -= 3;
1864
      pp_needs_newline (pp) = true;
1865
      break;
1866
 
1867
      /* selection-statement:
1868
            if ( expression ) statement
1869
            if ( expression ) statement else statement  */
1870
    case IF_STMT:
1871
      pp_cxx_ws_string (pp, "if");
1872
      pp_cxx_whitespace (pp);
1873
      pp_cxx_left_paren (pp);
1874
      pp_cxx_expression (pp, IF_COND (t));
1875
      pp_cxx_right_paren (pp);
1876
      pp_newline_and_indent (pp, 2);
1877
      pp_cxx_statement (pp, THEN_CLAUSE (t));
1878
      pp_newline_and_indent (pp, -2);
1879
      if (ELSE_CLAUSE (t))
1880
        {
1881
          tree else_clause = ELSE_CLAUSE (t);
1882
          pp_cxx_ws_string (pp, "else");
1883
          if (TREE_CODE (else_clause) == IF_STMT)
1884
            pp_cxx_whitespace (pp);
1885
          else
1886
            pp_newline_and_indent (pp, 2);
1887
          pp_cxx_statement (pp, else_clause);
1888
          if (TREE_CODE (else_clause) != IF_STMT)
1889
            pp_newline_and_indent (pp, -2);
1890
        }
1891
      break;
1892
 
1893
    case SWITCH_STMT:
1894
      pp_cxx_ws_string (pp, "switch");
1895
      pp_space (pp);
1896
      pp_cxx_left_paren (pp);
1897
      pp_cxx_expression (pp, SWITCH_STMT_COND (t));
1898
      pp_cxx_right_paren (pp);
1899
      pp_indentation (pp) += 3;
1900
      pp_needs_newline (pp) = true;
1901
      pp_cxx_statement (pp, SWITCH_STMT_BODY (t));
1902
      pp_newline_and_indent (pp, -3);
1903
      break;
1904
 
1905
      /* iteration-statement:
1906
            while ( expression ) statement
1907
            do statement while ( expression ) ;
1908
            for ( expression(opt) ; expression(opt) ; expression(opt) ) statement
1909
            for ( declaration expression(opt) ; expression(opt) ) statement  */
1910
    case WHILE_STMT:
1911
      pp_cxx_ws_string (pp, "while");
1912
      pp_space (pp);
1913
      pp_cxx_left_paren (pp);
1914
      pp_cxx_expression (pp, WHILE_COND (t));
1915
      pp_cxx_right_paren (pp);
1916
      pp_newline_and_indent (pp, 3);
1917
      pp_cxx_statement (pp, WHILE_BODY (t));
1918
      pp_indentation (pp) -= 3;
1919
      pp_needs_newline (pp) = true;
1920
      break;
1921
 
1922
    case DO_STMT:
1923
      pp_cxx_ws_string (pp, "do");
1924
      pp_newline_and_indent (pp, 3);
1925
      pp_cxx_statement (pp, DO_BODY (t));
1926
      pp_newline_and_indent (pp, -3);
1927
      pp_cxx_ws_string (pp, "while");
1928
      pp_space (pp);
1929
      pp_cxx_left_paren (pp);
1930
      pp_cxx_expression (pp, DO_COND (t));
1931
      pp_cxx_right_paren (pp);
1932
      pp_cxx_semicolon (pp);
1933
      pp_needs_newline (pp) = true;
1934
      break;
1935
 
1936
    case FOR_STMT:
1937
      pp_cxx_ws_string (pp, "for");
1938
      pp_space (pp);
1939
      pp_cxx_left_paren (pp);
1940
      if (FOR_INIT_STMT (t))
1941
        pp_cxx_statement (pp, FOR_INIT_STMT (t));
1942
      else
1943
        pp_cxx_semicolon (pp);
1944
      pp_needs_newline (pp) = false;
1945
      pp_cxx_whitespace (pp);
1946
      if (FOR_COND (t))
1947
        pp_cxx_expression (pp, FOR_COND (t));
1948
      pp_cxx_semicolon (pp);
1949
      pp_needs_newline (pp) = false;
1950
      pp_cxx_whitespace (pp);
1951
      if (FOR_EXPR (t))
1952
        pp_cxx_expression (pp, FOR_EXPR (t));
1953
      pp_cxx_right_paren (pp);
1954
      pp_newline_and_indent (pp, 3);
1955
      pp_cxx_statement (pp, FOR_BODY (t));
1956
      pp_indentation (pp) -= 3;
1957
      pp_needs_newline (pp) = true;
1958
      break;
1959
 
1960
    case RANGE_FOR_STMT:
1961
      pp_cxx_ws_string (pp, "for");
1962
      pp_space (pp);
1963
      pp_cxx_left_paren (pp);
1964
      pp_cxx_statement (pp, RANGE_FOR_DECL (t));
1965
      pp_space (pp);
1966
      pp_needs_newline (pp) = false;
1967
      pp_colon (pp);
1968
      pp_space (pp);
1969
      pp_cxx_statement (pp, RANGE_FOR_EXPR (t));
1970
      pp_cxx_right_paren (pp);
1971
      pp_newline_and_indent (pp, 3);
1972
      pp_cxx_statement (pp, FOR_BODY (t));
1973
      pp_indentation (pp) -= 3;
1974
      pp_needs_newline (pp) = true;
1975
      break;
1976
 
1977
      /* jump-statement:
1978
            goto identifier;
1979
            continue ;
1980
            return expression(opt) ;  */
1981
    case BREAK_STMT:
1982
    case CONTINUE_STMT:
1983
      pp_string (pp, TREE_CODE (t) == BREAK_STMT ? "break" : "continue");
1984
      pp_cxx_semicolon (pp);
1985
      pp_needs_newline (pp) = true;
1986
      break;
1987
 
1988
      /* expression-statement:
1989
            expression(opt) ;  */
1990
    case EXPR_STMT:
1991
      pp_cxx_expression (pp, EXPR_STMT_EXPR (t));
1992
      pp_cxx_semicolon (pp);
1993
      pp_needs_newline (pp) = true;
1994
      break;
1995
 
1996
    case CLEANUP_STMT:
1997
      pp_cxx_ws_string (pp, "try");
1998
      pp_newline_and_indent (pp, 2);
1999
      pp_cxx_statement (pp, CLEANUP_BODY (t));
2000
      pp_newline_and_indent (pp, -2);
2001
      pp_cxx_ws_string (pp, CLEANUP_EH_ONLY (t) ? "catch" : "finally");
2002
      pp_newline_and_indent (pp, 2);
2003
      pp_cxx_statement (pp, CLEANUP_EXPR (t));
2004
      pp_newline_and_indent (pp, -2);
2005
      break;
2006
 
2007
    case STATIC_ASSERT:
2008
      pp_cxx_declaration (pp, t);
2009
      break;
2010
 
2011
    default:
2012
      pp_c_statement (pp_c_base (pp), t);
2013
      break;
2014
    }
2015
}
2016
 
2017
/* original-namespace-definition:
2018
      namespace identifier { namespace-body }
2019
 
2020
  As an edge case, we also handle unnamed namespace definition here.  */
2021
 
2022
static void
2023
pp_cxx_original_namespace_definition (cxx_pretty_printer *pp, tree t)
2024
{
2025
  pp_cxx_ws_string (pp, "namespace");
2026
  if (DECL_CONTEXT (t))
2027
    pp_cxx_nested_name_specifier (pp, DECL_CONTEXT (t));
2028
  if (DECL_NAME (t))
2029
    pp_cxx_unqualified_id (pp, t);
2030
  pp_cxx_whitespace (pp);
2031
  pp_cxx_left_brace (pp);
2032
  /* We do not print the namespace-body.  */
2033
  pp_cxx_whitespace (pp);
2034
  pp_cxx_right_brace (pp);
2035
}
2036
 
2037
/* namespace-alias:
2038
      identifier
2039
 
2040
   namespace-alias-definition:
2041
      namespace identifier = qualified-namespace-specifier ;
2042
 
2043
   qualified-namespace-specifier:
2044
      ::(opt) nested-name-specifier(opt) namespace-name   */
2045
 
2046
static void
2047
pp_cxx_namespace_alias_definition (cxx_pretty_printer *pp, tree t)
2048
{
2049
  pp_cxx_ws_string (pp, "namespace");
2050
  if (DECL_CONTEXT (t))
2051
    pp_cxx_nested_name_specifier (pp, DECL_CONTEXT (t));
2052
  pp_cxx_unqualified_id (pp, t);
2053
  pp_cxx_whitespace (pp);
2054
  pp_equal (pp);
2055
  pp_cxx_whitespace (pp);
2056
  if (DECL_CONTEXT (DECL_NAMESPACE_ALIAS (t)))
2057
    pp_cxx_nested_name_specifier (pp,
2058
                                  DECL_CONTEXT (DECL_NAMESPACE_ALIAS (t)));
2059
  pp_cxx_qualified_id (pp, DECL_NAMESPACE_ALIAS (t));
2060
  pp_cxx_semicolon (pp);
2061
}
2062
 
2063
/* simple-declaration:
2064
      decl-specifier-seq(opt) init-declarator-list(opt)  */
2065
 
2066
static void
2067
pp_cxx_simple_declaration (cxx_pretty_printer *pp, tree t)
2068
{
2069
  pp_cxx_decl_specifier_seq (pp, t);
2070
  pp_cxx_init_declarator (pp, t);
2071
  pp_cxx_semicolon (pp);
2072
  pp_needs_newline (pp) = true;
2073
}
2074
 
2075
/*
2076
  template-parameter-list:
2077
     template-parameter
2078
     template-parameter-list , template-parameter  */
2079
 
2080
static inline void
2081
pp_cxx_template_parameter_list (cxx_pretty_printer *pp, tree t)
2082
{
2083
  const int n = TREE_VEC_LENGTH (t);
2084
  int i;
2085
  for (i = 0; i < n; ++i)
2086
    {
2087
      if (i)
2088
        pp_cxx_separate_with (pp, ',');
2089
      pp_cxx_template_parameter (pp, TREE_VEC_ELT (t, i));
2090
    }
2091
}
2092
 
2093
/* template-parameter:
2094
      type-parameter
2095
      parameter-declaration
2096
 
2097
   type-parameter:
2098
     class ...(opt) identifier(opt)
2099
     class identifier(opt) = type-id
2100
     typename identifier(opt)
2101
     typename ...(opt) identifier(opt) = type-id
2102
     template < template-parameter-list > class ...(opt) identifier(opt)
2103
     template < template-parameter-list > class identifier(opt) = template-name  */
2104
 
2105
static void
2106
pp_cxx_template_parameter (cxx_pretty_printer *pp, tree t)
2107
{
2108
  tree parameter =  TREE_VALUE (t);
2109
  switch (TREE_CODE (parameter))
2110
    {
2111
    case TYPE_DECL:
2112
      pp_cxx_ws_string (pp, "class");
2113
      if (TEMPLATE_TYPE_PARAMETER_PACK (TREE_TYPE (t)))
2114
        pp_cxx_ws_string (pp, "...");
2115
      if (DECL_NAME (parameter))
2116
        pp_cxx_tree_identifier (pp, DECL_NAME (parameter));
2117
      /* FIXME: Check if we should print also default argument.  */
2118
      break;
2119
 
2120
    case PARM_DECL:
2121
      pp_cxx_parameter_declaration (pp, parameter);
2122
      break;
2123
 
2124
    case TEMPLATE_DECL:
2125
      break;
2126
 
2127
    default:
2128
      pp_unsupported_tree (pp, t);
2129
      break;
2130
    }
2131
}
2132
 
2133
/* Pretty-print a template parameter in the canonical form
2134
   "template-parameter-<level>-<position in parameter list>".  */
2135
 
2136
void
2137
pp_cxx_canonical_template_parameter (cxx_pretty_printer *pp, tree parm)
2138
{
2139
  const enum tree_code code = TREE_CODE (parm);
2140
 
2141
  /* Brings type template parameters to the canonical forms.  */
2142
  if (code == TEMPLATE_TYPE_PARM || code == TEMPLATE_TEMPLATE_PARM
2143
      || code == BOUND_TEMPLATE_TEMPLATE_PARM)
2144
    parm = TEMPLATE_TYPE_PARM_INDEX (parm);
2145
 
2146
  pp_cxx_begin_template_argument_list (pp);
2147
  pp_cxx_ws_string (pp, M_("template-parameter-"));
2148
  pp_wide_integer (pp, TEMPLATE_PARM_LEVEL (parm));
2149
  pp_minus (pp);
2150
  pp_wide_integer (pp, TEMPLATE_PARM_IDX (parm) + 1);
2151
  pp_cxx_end_template_argument_list (pp);
2152
}
2153
 
2154
/*
2155
  template-declaration:
2156
     export(opt) template < template-parameter-list > declaration   */
2157
 
2158
static void
2159
pp_cxx_template_declaration (cxx_pretty_printer *pp, tree t)
2160
{
2161
  tree tmpl = most_general_template (t);
2162
  tree level;
2163
 
2164
  pp_maybe_newline_and_indent (pp, 0);
2165
  for (level = DECL_TEMPLATE_PARMS (tmpl); level; level = TREE_CHAIN (level))
2166
    {
2167
      pp_cxx_ws_string (pp, "template");
2168
      pp_cxx_begin_template_argument_list (pp);
2169
      pp_cxx_template_parameter_list (pp, TREE_VALUE (level));
2170
      pp_cxx_end_template_argument_list (pp);
2171
      pp_newline_and_indent (pp, 3);
2172
    }
2173
  if (TREE_CODE (t) == FUNCTION_DECL && DECL_SAVED_TREE (t))
2174
    pp_cxx_function_definition (pp, t);
2175
  else
2176
    pp_cxx_simple_declaration (pp, t);
2177
}
2178
 
2179
static void
2180
pp_cxx_explicit_specialization (cxx_pretty_printer *pp, tree t)
2181
{
2182
  pp_unsupported_tree (pp, t);
2183
}
2184
 
2185
static void
2186
pp_cxx_explicit_instantiation (cxx_pretty_printer *pp, tree t)
2187
{
2188
  pp_unsupported_tree (pp, t);
2189
}
2190
 
2191
/*
2192
    declaration:
2193
       block-declaration
2194
       function-definition
2195
       template-declaration
2196
       explicit-instantiation
2197
       explicit-specialization
2198
       linkage-specification
2199
       namespace-definition
2200
 
2201
    block-declaration:
2202
       simple-declaration
2203
       asm-definition
2204
       namespace-alias-definition
2205
       using-declaration
2206
       using-directive
2207
       static_assert-declaration */
2208
void
2209
pp_cxx_declaration (cxx_pretty_printer *pp, tree t)
2210
{
2211
  if (TREE_CODE (t) == STATIC_ASSERT)
2212
    {
2213
      pp_cxx_ws_string (pp, "static_assert");
2214
      pp_cxx_left_paren (pp);
2215
      pp_cxx_expression (pp, STATIC_ASSERT_CONDITION (t));
2216
      pp_cxx_separate_with (pp, ',');
2217
      pp_cxx_expression (pp, STATIC_ASSERT_MESSAGE (t));
2218
      pp_cxx_right_paren (pp);
2219
    }
2220
  else if (!DECL_LANG_SPECIFIC (t))
2221
    pp_cxx_simple_declaration (pp, t);
2222
  else if (DECL_USE_TEMPLATE (t))
2223
    switch (DECL_USE_TEMPLATE (t))
2224
      {
2225
      case 1:
2226
        pp_cxx_template_declaration (pp, t);
2227
        break;
2228
 
2229
      case 2:
2230
        pp_cxx_explicit_specialization (pp, t);
2231
        break;
2232
 
2233
      case 3:
2234
        pp_cxx_explicit_instantiation (pp, t);
2235
        break;
2236
 
2237
      default:
2238
        break;
2239
      }
2240
  else switch (TREE_CODE (t))
2241
    {
2242
    case VAR_DECL:
2243
    case TYPE_DECL:
2244
      pp_cxx_simple_declaration (pp, t);
2245
      break;
2246
 
2247
    case FUNCTION_DECL:
2248
      if (DECL_SAVED_TREE (t))
2249
        pp_cxx_function_definition (pp, t);
2250
      else
2251
        pp_cxx_simple_declaration (pp, t);
2252
      break;
2253
 
2254
    case NAMESPACE_DECL:
2255
      if (DECL_NAMESPACE_ALIAS (t))
2256
        pp_cxx_namespace_alias_definition (pp, t);
2257
      else
2258
        pp_cxx_original_namespace_definition (pp, t);
2259
      break;
2260
 
2261
    default:
2262
      pp_unsupported_tree (pp, t);
2263
      break;
2264
    }
2265
}
2266
 
2267
static void
2268
pp_cxx_typeid_expression (cxx_pretty_printer *pp, tree t)
2269
{
2270
  t = TREE_OPERAND (t, 0);
2271
  pp_cxx_ws_string (pp, "typeid");
2272
  pp_cxx_left_paren (pp);
2273
  if (TYPE_P (t))
2274
    pp_cxx_type_id (pp, t);
2275
  else
2276
    pp_cxx_expression (pp, t);
2277
  pp_cxx_right_paren (pp);
2278
}
2279
 
2280
void
2281
pp_cxx_va_arg_expression (cxx_pretty_printer *pp, tree t)
2282
{
2283
  pp_cxx_ws_string (pp, "va_arg");
2284
  pp_cxx_left_paren (pp);
2285
  pp_cxx_assignment_expression (pp, TREE_OPERAND (t, 0));
2286
  pp_cxx_separate_with (pp, ',');
2287
  pp_cxx_type_id (pp, TREE_TYPE (t));
2288
  pp_cxx_right_paren (pp);
2289
}
2290
 
2291
static bool
2292
pp_cxx_offsetof_expression_1 (cxx_pretty_printer *pp, tree t)
2293
{
2294
  switch (TREE_CODE (t))
2295
    {
2296
    case ARROW_EXPR:
2297
      if (TREE_CODE (TREE_OPERAND (t, 0)) == STATIC_CAST_EXPR
2298
          && POINTER_TYPE_P (TREE_TYPE (TREE_OPERAND (t, 0))))
2299
        {
2300
          pp_cxx_type_id (pp, TREE_TYPE (TREE_TYPE (TREE_OPERAND (t, 0))));
2301
          pp_cxx_separate_with (pp, ',');
2302
          return true;
2303
        }
2304
      return false;
2305
    case COMPONENT_REF:
2306
      if (!pp_cxx_offsetof_expression_1 (pp, TREE_OPERAND (t, 0)))
2307
        return false;
2308
      if (TREE_CODE (TREE_OPERAND (t, 0)) != ARROW_EXPR)
2309
        pp_cxx_dot (pp);
2310
      pp_cxx_expression (pp, TREE_OPERAND (t, 1));
2311
      return true;
2312
    case ARRAY_REF:
2313
      if (!pp_cxx_offsetof_expression_1 (pp, TREE_OPERAND (t, 0)))
2314
        return false;
2315
      pp_left_bracket (pp);
2316
      pp_cxx_expression (pp, TREE_OPERAND (t, 1));
2317
      pp_right_bracket (pp);
2318
      return true;
2319
    default:
2320
      return false;
2321
    }
2322
}
2323
 
2324
void
2325
pp_cxx_offsetof_expression (cxx_pretty_printer *pp, tree t)
2326
{
2327
  pp_cxx_ws_string (pp, "offsetof");
2328
  pp_cxx_left_paren (pp);
2329
  if (!pp_cxx_offsetof_expression_1 (pp, TREE_OPERAND (t, 0)))
2330
    pp_cxx_expression (pp, TREE_OPERAND (t, 0));
2331
  pp_cxx_right_paren (pp);
2332
}
2333
 
2334
void
2335
pp_cxx_trait_expression (cxx_pretty_printer *pp, tree t)
2336
{
2337
  cp_trait_kind kind = TRAIT_EXPR_KIND (t);
2338
 
2339
  switch (kind)
2340
    {
2341
    case CPTK_HAS_NOTHROW_ASSIGN:
2342
      pp_cxx_ws_string (pp, "__has_nothrow_assign");
2343
      break;
2344
    case CPTK_HAS_TRIVIAL_ASSIGN:
2345
      pp_cxx_ws_string (pp, "__has_trivial_assign");
2346
      break;
2347
    case CPTK_HAS_NOTHROW_CONSTRUCTOR:
2348
      pp_cxx_ws_string (pp, "__has_nothrow_constructor");
2349
      break;
2350
    case CPTK_HAS_TRIVIAL_CONSTRUCTOR:
2351
      pp_cxx_ws_string (pp, "__has_trivial_constructor");
2352
      break;
2353
    case CPTK_HAS_NOTHROW_COPY:
2354
      pp_cxx_ws_string (pp, "__has_nothrow_copy");
2355
      break;
2356
    case CPTK_HAS_TRIVIAL_COPY:
2357
      pp_cxx_ws_string (pp, "__has_trivial_copy");
2358
      break;
2359
    case CPTK_HAS_TRIVIAL_DESTRUCTOR:
2360
      pp_cxx_ws_string (pp, "__has_trivial_destructor");
2361
      break;
2362
    case CPTK_HAS_VIRTUAL_DESTRUCTOR:
2363
      pp_cxx_ws_string (pp, "__has_virtual_destructor");
2364
      break;
2365
    case CPTK_IS_ABSTRACT:
2366
      pp_cxx_ws_string (pp, "__is_abstract");
2367
      break;
2368
    case CPTK_IS_BASE_OF:
2369
      pp_cxx_ws_string (pp, "__is_base_of");
2370
      break;
2371
    case CPTK_IS_CLASS:
2372
      pp_cxx_ws_string (pp, "__is_class");
2373
      break;
2374
    case CPTK_IS_CONVERTIBLE_TO:
2375
      pp_cxx_ws_string (pp, "__is_convertible_to");
2376
      break;
2377
    case CPTK_IS_EMPTY:
2378
      pp_cxx_ws_string (pp, "__is_empty");
2379
      break;
2380
    case CPTK_IS_ENUM:
2381
      pp_cxx_ws_string (pp, "__is_enum");
2382
      break;
2383
    case CPTK_IS_FINAL:
2384
      pp_cxx_ws_string (pp, "__is_final");
2385
      break;
2386
    case CPTK_IS_POD:
2387
      pp_cxx_ws_string (pp, "__is_pod");
2388
      break;
2389
    case CPTK_IS_POLYMORPHIC:
2390
      pp_cxx_ws_string (pp, "__is_polymorphic");
2391
      break;
2392
    case CPTK_IS_STD_LAYOUT:
2393
      pp_cxx_ws_string (pp, "__is_std_layout");
2394
      break;
2395
    case CPTK_IS_TRIVIAL:
2396
      pp_cxx_ws_string (pp, "__is_trivial");
2397
      break;
2398
    case CPTK_IS_UNION:
2399
      pp_cxx_ws_string (pp, "__is_union");
2400
      break;
2401
    case CPTK_IS_LITERAL_TYPE:
2402
      pp_cxx_ws_string (pp, "__is_literal_type");
2403
      break;
2404
 
2405
    default:
2406
      gcc_unreachable ();
2407
    }
2408
 
2409
  pp_cxx_left_paren (pp);
2410
  pp_cxx_type_id (pp, TRAIT_EXPR_TYPE1 (t));
2411
 
2412
  if (kind == CPTK_IS_BASE_OF || kind == CPTK_IS_CONVERTIBLE_TO)
2413
    {
2414
      pp_cxx_separate_with (pp, ',');
2415
      pp_cxx_type_id (pp, TRAIT_EXPR_TYPE2 (t));
2416
    }
2417
 
2418
  pp_cxx_right_paren (pp);
2419
}
2420
 
2421
typedef c_pretty_print_fn pp_fun;
2422
 
2423
/* Initialization of a C++ pretty-printer object.  */
2424
 
2425
void
2426
pp_cxx_pretty_printer_init (cxx_pretty_printer *pp)
2427
{
2428
  pp_c_pretty_printer_init (pp_c_base (pp));
2429
  pp_set_line_maximum_length (pp, 0);
2430
 
2431
  pp->c_base.declaration = (pp_fun) pp_cxx_declaration;
2432
  pp->c_base.declaration_specifiers = (pp_fun) pp_cxx_decl_specifier_seq;
2433
  pp->c_base.function_specifier = (pp_fun) pp_cxx_function_specifier;
2434
  pp->c_base.type_specifier_seq = (pp_fun) pp_cxx_type_specifier_seq;
2435
  pp->c_base.declarator = (pp_fun) pp_cxx_declarator;
2436
  pp->c_base.direct_declarator = (pp_fun) pp_cxx_direct_declarator;
2437
  pp->c_base.parameter_list = (pp_fun) pp_cxx_parameter_declaration_clause;
2438
  pp->c_base.type_id = (pp_fun) pp_cxx_type_id;
2439
  pp->c_base.abstract_declarator = (pp_fun) pp_cxx_abstract_declarator;
2440
  pp->c_base.direct_abstract_declarator =
2441
    (pp_fun) pp_cxx_direct_abstract_declarator;
2442
  pp->c_base.simple_type_specifier = (pp_fun)pp_cxx_simple_type_specifier;
2443
 
2444
  /* pp->c_base.statement = (pp_fun) pp_cxx_statement;  */
2445
 
2446
  pp->c_base.constant = (pp_fun) pp_cxx_constant;
2447
  pp->c_base.id_expression = (pp_fun) pp_cxx_id_expression;
2448
  pp->c_base.primary_expression = (pp_fun) pp_cxx_primary_expression;
2449
  pp->c_base.postfix_expression = (pp_fun) pp_cxx_postfix_expression;
2450
  pp->c_base.unary_expression = (pp_fun) pp_cxx_unary_expression;
2451
  pp->c_base.multiplicative_expression = (pp_fun) pp_cxx_multiplicative_expression;
2452
  pp->c_base.conditional_expression = (pp_fun) pp_cxx_conditional_expression;
2453
  pp->c_base.assignment_expression = (pp_fun) pp_cxx_assignment_expression;
2454
  pp->c_base.expression = (pp_fun) pp_cxx_expression;
2455
  pp->enclosing_scope = global_namespace;
2456
}

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