xref: /dragonfly/contrib/gdb-7/gdb/ada-typeprint.c (revision 91dc43dd)
1 /* Support for printing Ada types for GDB, the GNU debugger.
2    Copyright (C) 1986-2013 Free Software Foundation, Inc.
3 
4    This file is part of GDB.
5 
6    This program is free software; you can redistribute it and/or modify
7    it under the terms of the GNU General Public License as published by
8    the Free Software Foundation; either version 3 of the License, or
9    (at your option) any later version.
10 
11    This program is distributed in the hope that it will be useful,
12    but WITHOUT ANY WARRANTY; without even the implied warranty of
13    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
14    GNU General Public License for more details.
15 
16    You should have received a copy of the GNU General Public License
17    along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
18 
19 #include "defs.h"
20 #include "gdb_obstack.h"
21 #include "bfd.h"		/* Binary File Description */
22 #include "symtab.h"
23 #include "gdbtypes.h"
24 #include "expression.h"
25 #include "value.h"
26 #include "gdbcore.h"
27 #include "target.h"
28 #include "command.h"
29 #include "gdbcmd.h"
30 #include "language.h"
31 #include "demangle.h"
32 #include "c-lang.h"
33 #include "typeprint.h"
34 #include "ada-lang.h"
35 
36 #include <ctype.h>
37 #include "gdb_string.h"
38 #include <errno.h>
39 
40 static int print_selected_record_field_types (struct type *, struct type *,
41 					      int, int,
42 					      struct ui_file *, int, int,
43 					      const struct type_print_options *);
44 
45 static int print_record_field_types (struct type *, struct type *,
46 				     struct ui_file *, int, int,
47 				     const struct type_print_options *);
48 
49 static void print_array_type (struct type *, struct ui_file *, int, int,
50 			      const struct type_print_options *);
51 
52 static int print_choices (struct type *, int, struct ui_file *,
53 			  struct type *);
54 
55 static void print_range (struct type *, struct ui_file *);
56 
57 static void print_range_bound (struct type *, char *, int *,
58 			       struct ui_file *);
59 
60 static void
61 print_dynamic_range_bound (struct type *, const char *, int,
62 			   const char *, struct ui_file *);
63 
64 static void print_range_type (struct type *, struct ui_file *);
65 
66 
67 
68 static char *name_buffer;
69 static int name_buffer_len;
70 
71 /* The (decoded) Ada name of TYPE.  This value persists until the
72    next call.  */
73 
74 static char *
75 decoded_type_name (struct type *type)
76 {
77   if (ada_type_name (type) == NULL)
78     return NULL;
79   else
80     {
81       const char *raw_name = ada_type_name (type);
82       char *s, *q;
83 
84       if (name_buffer == NULL || name_buffer_len <= strlen (raw_name))
85 	{
86 	  name_buffer_len = 16 + 2 * strlen (raw_name);
87 	  name_buffer = xrealloc (name_buffer, name_buffer_len);
88 	}
89       strcpy (name_buffer, raw_name);
90 
91       s = (char *) strstr (name_buffer, "___");
92       if (s != NULL)
93 	*s = '\0';
94 
95       s = name_buffer + strlen (name_buffer) - 1;
96       while (s > name_buffer && (s[0] != '_' || s[-1] != '_'))
97 	s -= 1;
98 
99       if (s == name_buffer)
100 	return name_buffer;
101 
102       if (!islower (s[1]))
103 	return NULL;
104 
105       for (s = q = name_buffer; *s != '\0'; q += 1)
106 	{
107 	  if (s[0] == '_' && s[1] == '_')
108 	    {
109 	      *q = '.';
110 	      s += 2;
111 	    }
112 	  else
113 	    {
114 	      *q = *s;
115 	      s += 1;
116 	    }
117 	}
118       *q = '\0';
119       return name_buffer;
120     }
121 }
122 
123 /* Print TYPE on STREAM, preferably as a range.  */
124 
125 static void
126 print_range (struct type *type, struct ui_file *stream)
127 {
128   switch (TYPE_CODE (type))
129     {
130     case TYPE_CODE_RANGE:
131     case TYPE_CODE_ENUM:
132       {
133 	struct type *target_type;
134 	target_type = TYPE_TARGET_TYPE (type);
135 	if (target_type == NULL)
136 	  target_type = type;
137 	ada_print_scalar (target_type, ada_discrete_type_low_bound (type),
138 			  stream);
139 	fprintf_filtered (stream, " .. ");
140 	ada_print_scalar (target_type, ada_discrete_type_high_bound (type),
141 			  stream);
142       }
143       break;
144     default:
145       fprintf_filtered (stream, "%.*s",
146 			ada_name_prefix_len (TYPE_NAME (type)),
147 			TYPE_NAME (type));
148       break;
149     }
150 }
151 
152 /* Print the number or discriminant bound at BOUNDS+*N on STREAM, and
153    set *N past the bound and its delimiter, if any.  */
154 
155 static void
156 print_range_bound (struct type *type, char *bounds, int *n,
157 		   struct ui_file *stream)
158 {
159   LONGEST B;
160 
161   if (ada_scan_number (bounds, *n, &B, n))
162     {
163       /* STABS decodes all range types which bounds are 0 .. -1 as
164          unsigned integers (ie. the type code is TYPE_CODE_INT, not
165          TYPE_CODE_RANGE).  Unfortunately, ada_print_scalar() relies
166          on the unsigned flag to determine whether the bound should
167          be printed as a signed or an unsigned value.  This causes
168          the upper bound of the 0 .. -1 range types to be printed as
169          a very large unsigned number instead of -1.
170          To workaround this stabs deficiency, we replace the TYPE by NULL
171          to indicate default output when we detect that the bound is negative,
172          and the type is a TYPE_CODE_INT.  The bound is negative when
173          'm' is the last character of the number scanned in BOUNDS.  */
174       if (bounds[*n - 1] == 'm' && TYPE_CODE (type) == TYPE_CODE_INT)
175 	type = NULL;
176       ada_print_scalar (type, B, stream);
177       if (bounds[*n] == '_')
178 	*n += 2;
179     }
180   else
181     {
182       int bound_len;
183       char *bound = bounds + *n;
184       char *pend;
185 
186       pend = strstr (bound, "__");
187       if (pend == NULL)
188 	*n += bound_len = strlen (bound);
189       else
190 	{
191 	  bound_len = pend - bound;
192 	  *n += bound_len + 2;
193 	}
194       fprintf_filtered (stream, "%.*s", bound_len, bound);
195     }
196 }
197 
198 /* Assuming NAME[0 .. NAME_LEN-1] is the name of a range type, print
199    the value (if found) of the bound indicated by SUFFIX ("___L" or
200    "___U") according to the ___XD conventions.  */
201 
202 static void
203 print_dynamic_range_bound (struct type *type, const char *name, int name_len,
204 			   const char *suffix, struct ui_file *stream)
205 {
206   static char *name_buf = NULL;
207   static size_t name_buf_len = 0;
208   LONGEST B;
209   int OK;
210 
211   GROW_VECT (name_buf, name_buf_len, name_len + strlen (suffix) + 1);
212   strncpy (name_buf, name, name_len);
213   strcpy (name_buf + name_len, suffix);
214 
215   B = get_int_var_value (name_buf, &OK);
216   if (OK)
217     ada_print_scalar (type, B, stream);
218   else
219     fprintf_filtered (stream, "?");
220 }
221 
222 /* Print RAW_TYPE as a range type, using any bound information
223    following the GNAT encoding (if available).  */
224 
225 static void
226 print_range_type (struct type *raw_type, struct ui_file *stream)
227 {
228   const char *name;
229   struct type *base_type;
230   const char *subtype_info;
231 
232   gdb_assert (raw_type != NULL);
233   name = TYPE_NAME (raw_type);
234   gdb_assert (name != NULL);
235 
236   if (TYPE_CODE (raw_type) == TYPE_CODE_RANGE)
237     base_type = TYPE_TARGET_TYPE (raw_type);
238   else
239     base_type = raw_type;
240 
241   subtype_info = strstr (name, "___XD");
242   if (subtype_info == NULL)
243     print_range (raw_type, stream);
244   else
245     {
246       int prefix_len = subtype_info - name;
247       char *bounds_str;
248       int n;
249 
250       subtype_info += 5;
251       bounds_str = strchr (subtype_info, '_');
252       n = 1;
253 
254       if (*subtype_info == 'L')
255 	{
256 	  print_range_bound (base_type, bounds_str, &n, stream);
257 	  subtype_info += 1;
258 	}
259       else
260 	print_dynamic_range_bound (base_type, name, prefix_len, "___L",
261 				   stream);
262 
263       fprintf_filtered (stream, " .. ");
264 
265       if (*subtype_info == 'U')
266 	print_range_bound (base_type, bounds_str, &n, stream);
267       else
268 	print_dynamic_range_bound (base_type, name, prefix_len, "___U",
269 				   stream);
270     }
271 }
272 
273 /* Print enumerated type TYPE on STREAM.  */
274 
275 static void
276 print_enum_type (struct type *type, struct ui_file *stream)
277 {
278   int len = TYPE_NFIELDS (type);
279   int i;
280   LONGEST lastval;
281 
282   fprintf_filtered (stream, "(");
283   wrap_here (" ");
284 
285   lastval = 0;
286   for (i = 0; i < len; i++)
287     {
288       QUIT;
289       if (i)
290 	fprintf_filtered (stream, ", ");
291       wrap_here ("    ");
292       fputs_filtered (ada_enum_name (TYPE_FIELD_NAME (type, i)), stream);
293       if (lastval != TYPE_FIELD_ENUMVAL (type, i))
294 	{
295 	  fprintf_filtered (stream, " => %s",
296 			    plongest (TYPE_FIELD_ENUMVAL (type, i)));
297 	  lastval = TYPE_FIELD_ENUMVAL (type, i);
298 	}
299       lastval += 1;
300     }
301   fprintf_filtered (stream, ")");
302 }
303 
304 /* Print representation of Ada fixed-point type TYPE on STREAM.  */
305 
306 static void
307 print_fixed_point_type (struct type *type, struct ui_file *stream)
308 {
309   DOUBLEST delta = ada_delta (type);
310   DOUBLEST small = ada_fixed_to_float (type, 1.0);
311 
312   if (delta < 0.0)
313     fprintf_filtered (stream, "delta ??");
314   else
315     {
316       fprintf_filtered (stream, "delta %g", (double) delta);
317       if (delta != small)
318 	fprintf_filtered (stream, " <'small = %g>", (double) small);
319     }
320 }
321 
322 /* Print simple (constrained) array type TYPE on STREAM.  LEVEL is the
323    recursion (indentation) level, in case the element type itself has
324    nested structure, and SHOW is the number of levels of internal
325    structure to show (see ada_print_type).  */
326 
327 static void
328 print_array_type (struct type *type, struct ui_file *stream, int show,
329 		  int level, const struct type_print_options *flags)
330 {
331   int bitsize;
332   int n_indices;
333 
334   if (ada_is_constrained_packed_array_type (type))
335     type = ada_coerce_to_simple_array_type (type);
336 
337   bitsize = 0;
338   fprintf_filtered (stream, "array (");
339 
340   if (type == NULL)
341     {
342       fprintf_filtered (stream, _("<undecipherable array type>"));
343       return;
344     }
345 
346   n_indices = -1;
347   if (ada_is_simple_array_type (type))
348     {
349       struct type *range_desc_type;
350       struct type *arr_type;
351 
352       range_desc_type = ada_find_parallel_type (type, "___XA");
353       ada_fixup_array_indexes_type (range_desc_type);
354 
355       bitsize = 0;
356       if (range_desc_type == NULL)
357 	{
358 	  for (arr_type = type; TYPE_CODE (arr_type) == TYPE_CODE_ARRAY;
359 	       arr_type = TYPE_TARGET_TYPE (arr_type))
360 	    {
361 	      if (arr_type != type)
362 		fprintf_filtered (stream, ", ");
363 	      print_range (TYPE_INDEX_TYPE (arr_type), stream);
364 	      if (TYPE_FIELD_BITSIZE (arr_type, 0) > 0)
365 		bitsize = TYPE_FIELD_BITSIZE (arr_type, 0);
366 	    }
367 	}
368       else
369 	{
370 	  int k;
371 
372 	  n_indices = TYPE_NFIELDS (range_desc_type);
373 	  for (k = 0, arr_type = type;
374 	       k < n_indices;
375 	       k += 1, arr_type = TYPE_TARGET_TYPE (arr_type))
376 	    {
377 	      if (k > 0)
378 		fprintf_filtered (stream, ", ");
379 	      print_range_type (TYPE_FIELD_TYPE (range_desc_type, k),
380 				stream);
381 	      if (TYPE_FIELD_BITSIZE (arr_type, 0) > 0)
382 		bitsize = TYPE_FIELD_BITSIZE (arr_type, 0);
383 	    }
384 	}
385     }
386   else
387     {
388       int i, i0;
389 
390       for (i = i0 = ada_array_arity (type); i > 0; i -= 1)
391 	fprintf_filtered (stream, "%s<>", i == i0 ? "" : ", ");
392     }
393 
394   fprintf_filtered (stream, ") of ");
395   wrap_here ("");
396   ada_print_type (ada_array_element_type (type, n_indices), "", stream,
397 		  show == 0 ? 0 : show - 1, level + 1, flags);
398   if (bitsize > 0)
399     fprintf_filtered (stream, " <packed: %d-bit elements>", bitsize);
400 }
401 
402 /* Print the choices encoded by field FIELD_NUM of variant-part TYPE on
403    STREAM, assuming that VAL_TYPE (if non-NULL) is the type of the
404    values.  Return non-zero if the field is an encoding of
405    discriminant values, as in a standard variant record, and 0 if the
406    field is not so encoded (as happens with single-component variants
407    in types annotated with pragma Unchecked_Variant).  */
408 
409 static int
410 print_choices (struct type *type, int field_num, struct ui_file *stream,
411 	       struct type *val_type)
412 {
413   int have_output;
414   int p;
415   const char *name = TYPE_FIELD_NAME (type, field_num);
416 
417   have_output = 0;
418 
419   /* Skip over leading 'V': NOTE soon to be obsolete.  */
420   if (name[0] == 'V')
421     {
422       if (!ada_scan_number (name, 1, NULL, &p))
423 	goto Huh;
424     }
425   else
426     p = 0;
427 
428   while (1)
429     {
430       switch (name[p])
431 	{
432 	default:
433 	  goto Huh;
434 	case '_':
435 	case '\0':
436 	  fprintf_filtered (stream, " =>");
437 	  return 1;
438 	case 'S':
439 	case 'R':
440 	case 'O':
441 	  if (have_output)
442 	    fprintf_filtered (stream, " | ");
443 	  have_output = 1;
444 	  break;
445 	}
446 
447       switch (name[p])
448 	{
449 	case 'S':
450 	  {
451 	    LONGEST W;
452 
453 	    if (!ada_scan_number (name, p + 1, &W, &p))
454 	      goto Huh;
455 	    ada_print_scalar (val_type, W, stream);
456 	    break;
457 	  }
458 	case 'R':
459 	  {
460 	    LONGEST L, U;
461 
462 	    if (!ada_scan_number (name, p + 1, &L, &p)
463 		|| name[p] != 'T' || !ada_scan_number (name, p + 1, &U, &p))
464 	      goto Huh;
465 	    ada_print_scalar (val_type, L, stream);
466 	    fprintf_filtered (stream, " .. ");
467 	    ada_print_scalar (val_type, U, stream);
468 	    break;
469 	  }
470 	case 'O':
471 	  fprintf_filtered (stream, "others");
472 	  p += 1;
473 	  break;
474 	}
475     }
476 
477 Huh:
478   fprintf_filtered (stream, "?? =>");
479   return 0;
480 }
481 
482 /* Assuming that field FIELD_NUM of TYPE represents variants whose
483    discriminant is contained in OUTER_TYPE, print its components on STREAM.
484    LEVEL is the recursion (indentation) level, in case any of the fields
485    themselves have nested structure, and SHOW is the number of levels of
486    internal structure to show (see ada_print_type).  For this purpose,
487    fields nested in a variant part are taken to be at the same level as
488    the fields immediately outside the variant part.  */
489 
490 static void
491 print_variant_clauses (struct type *type, int field_num,
492 		       struct type *outer_type, struct ui_file *stream,
493 		       int show, int level,
494 		       const struct type_print_options *flags)
495 {
496   int i;
497   struct type *var_type, *par_type;
498   struct type *discr_type;
499 
500   var_type = TYPE_FIELD_TYPE (type, field_num);
501   discr_type = ada_variant_discrim_type (var_type, outer_type);
502 
503   if (TYPE_CODE (var_type) == TYPE_CODE_PTR)
504     {
505       var_type = TYPE_TARGET_TYPE (var_type);
506       if (var_type == NULL || TYPE_CODE (var_type) != TYPE_CODE_UNION)
507 	return;
508     }
509 
510   par_type = ada_find_parallel_type (var_type, "___XVU");
511   if (par_type != NULL)
512     var_type = par_type;
513 
514   for (i = 0; i < TYPE_NFIELDS (var_type); i += 1)
515     {
516       fprintf_filtered (stream, "\n%*swhen ", level + 4, "");
517       if (print_choices (var_type, i, stream, discr_type))
518 	{
519 	  if (print_record_field_types (TYPE_FIELD_TYPE (var_type, i),
520 					outer_type, stream, show, level + 4,
521 					flags)
522 	      <= 0)
523 	    fprintf_filtered (stream, " null;");
524 	}
525       else
526 	print_selected_record_field_types (var_type, outer_type, i, i,
527 					   stream, show, level + 4, flags);
528     }
529 }
530 
531 /* Assuming that field FIELD_NUM of TYPE is a variant part whose
532    discriminants are contained in OUTER_TYPE, print a description of it
533    on STREAM.  LEVEL is the recursion (indentation) level, in case any of
534    the fields themselves have nested structure, and SHOW is the number of
535    levels of internal structure to show (see ada_print_type).  For this
536    purpose, fields nested in a variant part are taken to be at the same
537    level as the fields immediately outside the variant part.  */
538 
539 static void
540 print_variant_part (struct type *type, int field_num, struct type *outer_type,
541 		    struct ui_file *stream, int show, int level,
542 		    const struct type_print_options *flags)
543 {
544   fprintf_filtered (stream, "\n%*scase %s is", level + 4, "",
545 		    ada_variant_discrim_name
546 		    (TYPE_FIELD_TYPE (type, field_num)));
547   print_variant_clauses (type, field_num, outer_type, stream, show,
548 			 level + 4, flags);
549   fprintf_filtered (stream, "\n%*send case;", level + 4, "");
550 }
551 
552 /* Print a description on STREAM of the fields FLD0 through FLD1 in
553    record or union type TYPE, whose discriminants are in OUTER_TYPE.
554    LEVEL is the recursion (indentation) level, in case any of the
555    fields themselves have nested structure, and SHOW is the number of
556    levels of internal structure to show (see ada_print_type).  Does
557    not print parent type information of TYPE.  Returns 0 if no fields
558    printed, -1 for an incomplete type, else > 0.  Prints each field
559    beginning on a new line, but does not put a new line at end.  */
560 
561 static int
562 print_selected_record_field_types (struct type *type, struct type *outer_type,
563 				   int fld0, int fld1,
564 				   struct ui_file *stream, int show, int level,
565 				   const struct type_print_options *flags)
566 {
567   int i, flds;
568 
569   flds = 0;
570 
571   if (fld0 > fld1 && TYPE_STUB (type))
572     return -1;
573 
574   for (i = fld0; i <= fld1; i += 1)
575     {
576       QUIT;
577 
578       if (ada_is_parent_field (type, i) || ada_is_ignored_field (type, i))
579 	;
580       else if (ada_is_wrapper_field (type, i))
581 	flds += print_record_field_types (TYPE_FIELD_TYPE (type, i), type,
582 					  stream, show, level, flags);
583       else if (ada_is_variant_part (type, i))
584 	{
585 	  print_variant_part (type, i, outer_type, stream, show, level, flags);
586 	  flds = 1;
587 	}
588       else
589 	{
590 	  flds += 1;
591 	  fprintf_filtered (stream, "\n%*s", level + 4, "");
592 	  ada_print_type (TYPE_FIELD_TYPE (type, i),
593 			  TYPE_FIELD_NAME (type, i),
594 			  stream, show - 1, level + 4, flags);
595 	  fprintf_filtered (stream, ";");
596 	}
597     }
598 
599   return flds;
600 }
601 
602 /* Print a description on STREAM of all fields of record or union type
603    TYPE, as for print_selected_record_field_types, above.  */
604 
605 static int
606 print_record_field_types (struct type *type, struct type *outer_type,
607 			  struct ui_file *stream, int show, int level,
608 			  const struct type_print_options *flags)
609 {
610   return print_selected_record_field_types (type, outer_type,
611 					    0, TYPE_NFIELDS (type) - 1,
612 					    stream, show, level, flags);
613 }
614 
615 
616 /* Print record type TYPE on STREAM.  LEVEL is the recursion (indentation)
617    level, in case the element type itself has nested structure, and SHOW is
618    the number of levels of internal structure to show (see ada_print_type).  */
619 
620 static void
621 print_record_type (struct type *type0, struct ui_file *stream, int show,
622 		   int level, const struct type_print_options *flags)
623 {
624   struct type *parent_type;
625   struct type *type;
626 
627   type = ada_find_parallel_type (type0, "___XVE");
628   if (type == NULL)
629     type = type0;
630 
631   parent_type = ada_parent_type (type);
632   if (ada_type_name (parent_type) != NULL)
633     {
634       const char *parent_name = decoded_type_name (parent_type);
635 
636       /* If we fail to decode the parent type name, then use the parent
637 	 type name as is.  Not pretty, but should never happen except
638 	 when the debugging info is incomplete or incorrect.  This
639 	 prevents a crash trying to print a NULL pointer.  */
640       if (parent_name == NULL)
641 	parent_name = ada_type_name (parent_type);
642       fprintf_filtered (stream, "new %s with record", parent_name);
643     }
644   else if (parent_type == NULL && ada_is_tagged_type (type, 0))
645     fprintf_filtered (stream, "tagged record");
646   else
647     fprintf_filtered (stream, "record");
648 
649   if (show < 0)
650     fprintf_filtered (stream, " ... end record");
651   else
652     {
653       int flds;
654 
655       flds = 0;
656       if (parent_type != NULL && ada_type_name (parent_type) == NULL)
657 	flds += print_record_field_types (parent_type, parent_type,
658 					  stream, show, level, flags);
659       flds += print_record_field_types (type, type, stream, show, level,
660 					flags);
661 
662       if (flds > 0)
663 	fprintf_filtered (stream, "\n%*send record", level, "");
664       else if (flds < 0)
665 	fprintf_filtered (stream, _(" <incomplete type> end record"));
666       else
667 	fprintf_filtered (stream, " null; end record");
668     }
669 }
670 
671 /* Print the unchecked union type TYPE in something resembling Ada
672    format on STREAM.  LEVEL is the recursion (indentation) level
673    in case the element type itself has nested structure, and SHOW is the
674    number of levels of internal structure to show (see ada_print_type).  */
675 static void
676 print_unchecked_union_type (struct type *type, struct ui_file *stream,
677 			    int show, int level,
678 			    const struct type_print_options *flags)
679 {
680   if (show < 0)
681     fprintf_filtered (stream, "record (?) is ... end record");
682   else if (TYPE_NFIELDS (type) == 0)
683     fprintf_filtered (stream, "record (?) is null; end record");
684   else
685     {
686       int i;
687 
688       fprintf_filtered (stream, "record (?) is\n%*scase ? is", level + 4, "");
689 
690       for (i = 0; i < TYPE_NFIELDS (type); i += 1)
691 	{
692 	  fprintf_filtered (stream, "\n%*swhen ? =>\n%*s", level + 8, "",
693 			    level + 12, "");
694 	  ada_print_type (TYPE_FIELD_TYPE (type, i),
695 			  TYPE_FIELD_NAME (type, i),
696 			  stream, show - 1, level + 12, flags);
697 	  fprintf_filtered (stream, ";");
698 	}
699 
700       fprintf_filtered (stream, "\n%*send case;\n%*send record",
701 			level + 4, "", level, "");
702     }
703 }
704 
705 
706 
707 /* Print function or procedure type TYPE on STREAM.  Make it a header
708    for function or procedure NAME if NAME is not null.  */
709 
710 static void
711 print_func_type (struct type *type, struct ui_file *stream, const char *name,
712 		 const struct type_print_options *flags)
713 {
714   int i, len = TYPE_NFIELDS (type);
715 
716   if (TYPE_CODE (TYPE_TARGET_TYPE (type)) == TYPE_CODE_VOID)
717     fprintf_filtered (stream, "procedure");
718   else
719     fprintf_filtered (stream, "function");
720 
721   if (name != NULL && name[0] != '\0')
722     fprintf_filtered (stream, " %s", name);
723 
724   if (len > 0)
725     {
726       fprintf_filtered (stream, " (");
727       for (i = 0; i < len; i += 1)
728 	{
729 	  if (i > 0)
730 	    {
731 	      fputs_filtered ("; ", stream);
732 	      wrap_here ("    ");
733 	    }
734 	  fprintf_filtered (stream, "a%d: ", i + 1);
735 	  ada_print_type (TYPE_FIELD_TYPE (type, i), "", stream, -1, 0,
736 			  flags);
737 	}
738       fprintf_filtered (stream, ")");
739     }
740 
741   if (TYPE_CODE (TYPE_TARGET_TYPE (type)) != TYPE_CODE_VOID)
742     {
743       fprintf_filtered (stream, " return ");
744       ada_print_type (TYPE_TARGET_TYPE (type), "", stream, 0, 0, flags);
745     }
746 }
747 
748 
749 /* Print a description of a type TYPE0.
750    Output goes to STREAM (via stdio).
751    If VARSTRING is a non-empty string, print as an Ada variable/field
752        declaration.
753    SHOW+1 is the maximum number of levels of internal type structure
754       to show (this applies to record types, enumerated types, and
755       array types).
756    SHOW is the number of levels of internal type structure to show
757       when there is a type name for the SHOWth deepest level (0th is
758       outer level).
759    When SHOW<0, no inner structure is shown.
760    LEVEL indicates level of recursion (for nested definitions).  */
761 
762 void
763 ada_print_type (struct type *type0, const char *varstring,
764 		struct ui_file *stream, int show, int level,
765 		const struct type_print_options *flags)
766 {
767   struct type *type = ada_check_typedef (ada_get_base_type (type0));
768   char *type_name = decoded_type_name (type0);
769   int is_var_decl = (varstring != NULL && varstring[0] != '\0');
770 
771   if (type == NULL)
772     {
773       if (is_var_decl)
774 	fprintf_filtered (stream, "%.*s: ",
775 			  ada_name_prefix_len (varstring), varstring);
776       fprintf_filtered (stream, "<null type?>");
777       return;
778     }
779 
780   if (show > 0)
781     type = ada_check_typedef (type);
782 
783   if (is_var_decl && TYPE_CODE (type) != TYPE_CODE_FUNC)
784     fprintf_filtered (stream, "%.*s: ",
785 		      ada_name_prefix_len (varstring), varstring);
786 
787   if (type_name != NULL && show <= 0 && !ada_is_aligner_type (type))
788     {
789       fprintf_filtered (stream, "%.*s",
790 			ada_name_prefix_len (type_name), type_name);
791       return;
792     }
793 
794   if (ada_is_aligner_type (type))
795     ada_print_type (ada_aligned_type (type), "", stream, show, level, flags);
796   else if (ada_is_constrained_packed_array_type (type)
797 	   && TYPE_CODE (type) != TYPE_CODE_PTR)
798     print_array_type (type, stream, show, level, flags);
799   else
800     switch (TYPE_CODE (type))
801       {
802       default:
803 	fprintf_filtered (stream, "<");
804 	c_print_type (type, "", stream, show, level, flags);
805 	fprintf_filtered (stream, ">");
806 	break;
807       case TYPE_CODE_PTR:
808       case TYPE_CODE_TYPEDEF:
809 	fprintf_filtered (stream, "access ");
810 	ada_print_type (TYPE_TARGET_TYPE (type), "", stream, show, level,
811 			flags);
812 	break;
813       case TYPE_CODE_REF:
814 	fprintf_filtered (stream, "<ref> ");
815 	ada_print_type (TYPE_TARGET_TYPE (type), "", stream, show, level,
816 			flags);
817 	break;
818       case TYPE_CODE_ARRAY:
819 	print_array_type (type, stream, show, level, flags);
820 	break;
821       case TYPE_CODE_BOOL:
822 	fprintf_filtered (stream, "(false, true)");
823 	break;
824       case TYPE_CODE_INT:
825 	if (ada_is_fixed_point_type (type))
826 	  print_fixed_point_type (type, stream);
827 	else
828 	  {
829 	    const char *name = ada_type_name (type);
830 
831 	    if (!ada_is_range_type_name (name))
832 	      fprintf_filtered (stream, _("<%d-byte integer>"),
833 				TYPE_LENGTH (type));
834 	    else
835 	      {
836 		fprintf_filtered (stream, "range ");
837 		print_range_type (type, stream);
838 	      }
839 	  }
840 	break;
841       case TYPE_CODE_RANGE:
842 	if (ada_is_fixed_point_type (type))
843 	  print_fixed_point_type (type, stream);
844 	else if (ada_is_modular_type (type))
845 	  fprintf_filtered (stream, "mod %s",
846 			    int_string (ada_modulus (type), 10, 0, 0, 1));
847 	else
848 	  {
849 	    fprintf_filtered (stream, "range ");
850 	    print_range (type, stream);
851 	  }
852 	break;
853       case TYPE_CODE_FLT:
854 	fprintf_filtered (stream, _("<%d-byte float>"), TYPE_LENGTH (type));
855 	break;
856       case TYPE_CODE_ENUM:
857 	if (show < 0)
858 	  fprintf_filtered (stream, "(...)");
859 	else
860 	  print_enum_type (type, stream);
861 	break;
862       case TYPE_CODE_STRUCT:
863 	if (ada_is_array_descriptor_type (type))
864 	  print_array_type (type, stream, show, level, flags);
865 	else if (ada_is_bogus_array_descriptor (type))
866 	  fprintf_filtered (stream,
867 			    _("array (?) of ? (<mal-formed descriptor>)"));
868 	else
869 	  print_record_type (type, stream, show, level, flags);
870 	break;
871       case TYPE_CODE_UNION:
872 	print_unchecked_union_type (type, stream, show, level, flags);
873 	break;
874       case TYPE_CODE_FUNC:
875 	print_func_type (type, stream, varstring, flags);
876 	break;
877       }
878 }
879 
880 /* Implement the la_print_typedef language method for Ada.  */
881 
882 void
883 ada_print_typedef (struct type *type, struct symbol *new_symbol,
884                    struct ui_file *stream)
885 {
886   type = ada_check_typedef (type);
887   ada_print_type (type, "", stream, 0, 0, &type_print_raw_options);
888   fprintf_filtered (stream, "\n");
889 }
890