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[thirdparty/binutils-gdb.git] / gdb / f-typeprint.c
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c906108c 1/* Support for printing Fortran types for GDB, the GNU debugger.
1bac305b
AC
2
3 Copyright 1986, 1988, 1989, 1991, 1993, 1994, 1995, 1996, 1998,
4 2000, 2001, 2002, 2003 Free Software Foundation, Inc.
5
c906108c
SS
6 Contributed by Motorola. Adapted from the C version by Farooq Butt
7 (fmbutt@engage.sps.mot.com).
8
c5aa993b 9 This file is part of GDB.
c906108c 10
c5aa993b
JM
11 This program is free software; you can redistribute it and/or modify
12 it under the terms of the GNU General Public License as published by
13 the Free Software Foundation; either version 2 of the License, or
14 (at your option) any later version.
c906108c 15
c5aa993b
JM
16 This program is distributed in the hope that it will be useful,
17 but WITHOUT ANY WARRANTY; without even the implied warranty of
18 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19 GNU General Public License for more details.
c906108c 20
c5aa993b
JM
21 You should have received a copy of the GNU General Public License
22 along with this program; if not, write to the Free Software
23 Foundation, Inc., 59 Temple Place - Suite 330,
24 Boston, MA 02111-1307, USA. */
c906108c
SS
25
26#include "defs.h"
04ea0df1 27#include "gdb_obstack.h"
c906108c
SS
28#include "bfd.h"
29#include "symtab.h"
30#include "gdbtypes.h"
31#include "expression.h"
32#include "value.h"
33#include "gdbcore.h"
34#include "target.h"
c906108c 35#include "f-lang.h"
c906108c
SS
36
37#include "gdb_string.h"
38#include <errno.h>
39
c5aa993b 40#if 0 /* Currently unused */
d9fcf2fb 41static void f_type_print_args (struct type *, struct ui_file *);
c906108c
SS
42#endif
43
d9fcf2fb
JM
44static void print_equivalent_f77_float_type (struct type *,
45 struct ui_file *);
c906108c 46
d9fcf2fb
JM
47static void f_type_print_varspec_suffix (struct type *, struct ui_file *,
48 int, int, int);
c906108c 49
d9fcf2fb
JM
50void f_type_print_varspec_prefix (struct type *, struct ui_file *,
51 int, int);
c906108c 52
d9fcf2fb 53void f_type_print_base (struct type *, struct ui_file *, int, int);
c906108c 54\f
c5aa993b 55
c906108c
SS
56/* LEVEL is the depth to indent lines by. */
57
58void
fba45db2
KB
59f_print_type (struct type *type, char *varstring, struct ui_file *stream,
60 int show, int level)
c906108c
SS
61{
62 register enum type_code code;
63 int demangled_args;
64
65 f_type_print_base (type, stream, show, level);
66 code = TYPE_CODE (type);
67 if ((varstring != NULL && *varstring != '\0')
68 ||
c5aa993b
JM
69 /* Need a space if going to print stars or brackets;
70 but not if we will print just a type name. */
c906108c
SS
71 ((show > 0 || TYPE_NAME (type) == 0)
72 &&
73 (code == TYPE_CODE_PTR || code == TYPE_CODE_FUNC
74 || code == TYPE_CODE_METHOD
75 || code == TYPE_CODE_ARRAY
76 || code == TYPE_CODE_MEMBER
77 || code == TYPE_CODE_REF)))
78 fputs_filtered (" ", stream);
79 f_type_print_varspec_prefix (type, stream, show, 0);
80
81 fputs_filtered (varstring, stream);
82
83 /* For demangled function names, we have the arglist as part of the name,
84 so don't print an additional pair of ()'s */
85
c5aa993b 86 demangled_args = varstring[strlen (varstring) - 1] == ')';
c906108c
SS
87 f_type_print_varspec_suffix (type, stream, show, 0, demangled_args);
88}
89
90/* Print any asterisks or open-parentheses needed before the
91 variable name (to describe its type).
92
93 On outermost call, pass 0 for PASSED_A_PTR.
94 On outermost call, SHOW > 0 means should ignore
95 any typename for TYPE and show its details.
96 SHOW is always zero on recursive calls. */
97
98void
fba45db2
KB
99f_type_print_varspec_prefix (struct type *type, struct ui_file *stream,
100 int show, int passed_a_ptr)
c906108c
SS
101{
102 if (type == 0)
103 return;
104
105 if (TYPE_NAME (type) && show <= 0)
106 return;
107
108 QUIT;
109
110 switch (TYPE_CODE (type))
111 {
112 case TYPE_CODE_PTR:
113 f_type_print_varspec_prefix (TYPE_TARGET_TYPE (type), stream, 0, 1);
114 break;
115
116 case TYPE_CODE_FUNC:
117 f_type_print_varspec_prefix (TYPE_TARGET_TYPE (type), stream, 0, 0);
118 if (passed_a_ptr)
119 fprintf_filtered (stream, "(");
120 break;
121
122 case TYPE_CODE_ARRAY:
123 f_type_print_varspec_prefix (TYPE_TARGET_TYPE (type), stream, 0, 0);
124 break;
125
126 case TYPE_CODE_UNDEF:
127 case TYPE_CODE_STRUCT:
128 case TYPE_CODE_UNION:
129 case TYPE_CODE_ENUM:
130 case TYPE_CODE_INT:
131 case TYPE_CODE_FLT:
132 case TYPE_CODE_VOID:
133 case TYPE_CODE_ERROR:
134 case TYPE_CODE_CHAR:
135 case TYPE_CODE_BOOL:
136 case TYPE_CODE_SET:
137 case TYPE_CODE_RANGE:
138 case TYPE_CODE_STRING:
139 case TYPE_CODE_BITSTRING:
140 case TYPE_CODE_METHOD:
141 case TYPE_CODE_MEMBER:
142 case TYPE_CODE_REF:
143 case TYPE_CODE_COMPLEX:
144 case TYPE_CODE_TYPEDEF:
145 /* These types need no prefix. They are listed here so that
c5aa993b 146 gcc -Wall will reveal any types that haven't been handled. */
c906108c
SS
147 break;
148 }
149}
150
c906108c
SS
151/* Print any array sizes, function arguments or close parentheses
152 needed after the variable name (to describe its type).
153 Args work like c_type_print_varspec_prefix. */
154
155static void
fba45db2
KB
156f_type_print_varspec_suffix (struct type *type, struct ui_file *stream,
157 int show, int passed_a_ptr, int demangled_args)
c906108c
SS
158{
159 int upper_bound, lower_bound;
160 int lower_bound_was_default = 0;
161 static int arrayprint_recurse_level = 0;
162 int retcode;
163
164 if (type == 0)
165 return;
166
167 if (TYPE_NAME (type) && show <= 0)
168 return;
169
170 QUIT;
171
172 switch (TYPE_CODE (type))
173 {
174 case TYPE_CODE_ARRAY:
175 arrayprint_recurse_level++;
176
177 if (arrayprint_recurse_level == 1)
c5aa993b 178 fprintf_filtered (stream, "(");
c906108c
SS
179
180 if (TYPE_CODE (TYPE_TARGET_TYPE (type)) == TYPE_CODE_ARRAY)
181 f_type_print_varspec_suffix (TYPE_TARGET_TYPE (type), stream, 0, 0, 0);
182
c5aa993b 183 retcode = f77_get_dynamic_lowerbound (type, &lower_bound);
c906108c
SS
184
185 lower_bound_was_default = 0;
186
187 if (retcode == BOUND_FETCH_ERROR)
c5aa993b
JM
188 fprintf_filtered (stream, "???");
189 else if (lower_bound == 1) /* The default */
190 lower_bound_was_default = 1;
c906108c 191 else
c5aa993b 192 fprintf_filtered (stream, "%d", lower_bound);
c906108c
SS
193
194 if (lower_bound_was_default)
195 lower_bound_was_default = 0;
196 else
c5aa993b 197 fprintf_filtered (stream, ":");
c906108c
SS
198
199 /* Make sure that, if we have an assumed size array, we
c5aa993b 200 print out a warning and print the upperbound as '*' */
c906108c 201
c5aa993b 202 if (TYPE_ARRAY_UPPER_BOUND_TYPE (type) == BOUND_CANNOT_BE_DETERMINED)
c906108c 203 fprintf_filtered (stream, "*");
c5aa993b
JM
204 else
205 {
206 retcode = f77_get_dynamic_upperbound (type, &upper_bound);
c906108c 207
c5aa993b
JM
208 if (retcode == BOUND_FETCH_ERROR)
209 fprintf_filtered (stream, "???");
210 else
211 fprintf_filtered (stream, "%d", upper_bound);
212 }
c906108c
SS
213
214 if (TYPE_CODE (TYPE_TARGET_TYPE (type)) != TYPE_CODE_ARRAY)
215 f_type_print_varspec_suffix (TYPE_TARGET_TYPE (type), stream, 0, 0, 0);
216 if (arrayprint_recurse_level == 1)
217 fprintf_filtered (stream, ")");
218 else
c5aa993b 219 fprintf_filtered (stream, ",");
c906108c
SS
220 arrayprint_recurse_level--;
221 break;
222
223 case TYPE_CODE_PTR:
224 case TYPE_CODE_REF:
225 f_type_print_varspec_suffix (TYPE_TARGET_TYPE (type), stream, 0, 1, 0);
c5aa993b 226 fprintf_filtered (stream, ")");
c906108c
SS
227 break;
228
229 case TYPE_CODE_FUNC:
230 f_type_print_varspec_suffix (TYPE_TARGET_TYPE (type), stream, 0,
c5aa993b 231 passed_a_ptr, 0);
c906108c
SS
232 if (passed_a_ptr)
233 fprintf_filtered (stream, ")");
234
235 fprintf_filtered (stream, "()");
236 break;
237
238 case TYPE_CODE_UNDEF:
239 case TYPE_CODE_STRUCT:
240 case TYPE_CODE_UNION:
241 case TYPE_CODE_ENUM:
242 case TYPE_CODE_INT:
243 case TYPE_CODE_FLT:
244 case TYPE_CODE_VOID:
245 case TYPE_CODE_ERROR:
246 case TYPE_CODE_CHAR:
247 case TYPE_CODE_BOOL:
248 case TYPE_CODE_SET:
249 case TYPE_CODE_RANGE:
250 case TYPE_CODE_STRING:
251 case TYPE_CODE_BITSTRING:
252 case TYPE_CODE_METHOD:
253 case TYPE_CODE_MEMBER:
254 case TYPE_CODE_COMPLEX:
255 case TYPE_CODE_TYPEDEF:
256 /* These types do not need a suffix. They are listed so that
c5aa993b 257 gcc -Wall will report types that may not have been considered. */
c906108c
SS
258 break;
259 }
260}
261
262static void
fba45db2 263print_equivalent_f77_float_type (struct type *type, struct ui_file *stream)
c906108c
SS
264{
265 /* Override type name "float" and make it the
266 appropriate real. XLC stupidly outputs -12 as a type
267 for real when it really should be outputting -18 */
268
269 fprintf_filtered (stream, "real*%d", TYPE_LENGTH (type));
270}
271
272/* Print the name of the type (or the ultimate pointer target,
273 function value or array element), or the description of a
274 structure or union.
275
276 SHOW nonzero means don't print this type as just its name;
277 show its real definition even if it has a name.
278 SHOW zero means print just typename or struct tag if there is one
279 SHOW negative means abbreviate structure elements.
280 SHOW is decremented for printing of structure elements.
281
282 LEVEL is the depth to indent by.
283 We increase it for some recursive calls. */
284
285void
fba45db2
KB
286f_type_print_base (struct type *type, struct ui_file *stream, int show,
287 int level)
c906108c
SS
288{
289 int retcode;
290 int upper_bound;
291
292 QUIT;
293
294 wrap_here (" ");
295 if (type == NULL)
296 {
297 fputs_filtered ("<type unknown>", stream);
298 return;
299 }
300
301 /* When SHOW is zero or less, and there is a valid type name, then always
302 just print the type name directly from the type. */
303
304 if ((show <= 0) && (TYPE_NAME (type) != NULL))
305 {
306 if (TYPE_CODE (type) == TYPE_CODE_FLT)
307 print_equivalent_f77_float_type (type, stream);
308 else
309 fputs_filtered (TYPE_NAME (type), stream);
310 return;
311 }
312
313 if (TYPE_CODE (type) != TYPE_CODE_TYPEDEF)
314 CHECK_TYPEDEF (type);
315
316 switch (TYPE_CODE (type))
317 {
318 case TYPE_CODE_TYPEDEF:
319 f_type_print_base (TYPE_TARGET_TYPE (type), stream, 0, level);
320 break;
321
322 case TYPE_CODE_ARRAY:
323 case TYPE_CODE_FUNC:
324 f_type_print_base (TYPE_TARGET_TYPE (type), stream, show, level);
325 break;
326
c5aa993b 327 case TYPE_CODE_PTR:
c906108c
SS
328 fprintf_filtered (stream, "PTR TO -> ( ");
329 f_type_print_base (TYPE_TARGET_TYPE (type), stream, 0, level);
330 break;
331
332 case TYPE_CODE_VOID:
333 fprintf_filtered (stream, "VOID");
334 break;
335
336 case TYPE_CODE_UNDEF:
337 fprintf_filtered (stream, "struct <unknown>");
338 break;
339
340 case TYPE_CODE_ERROR:
341 fprintf_filtered (stream, "<unknown type>");
342 break;
343
344 case TYPE_CODE_RANGE:
345 /* This should not occur */
346 fprintf_filtered (stream, "<range type>");
347 break;
348
349 case TYPE_CODE_CHAR:
350 /* Override name "char" and make it "character" */
351 fprintf_filtered (stream, "character");
352 break;
353
354 case TYPE_CODE_INT:
355 /* There may be some character types that attempt to come
356 through as TYPE_CODE_INT since dbxstclass.h is so
357 C-oriented, we must change these to "character" from "char". */
358
bde58177 359 if (strcmp (TYPE_NAME (type), "char") == 0)
c906108c
SS
360 fprintf_filtered (stream, "character");
361 else
362 goto default_case;
363 break;
364
365 case TYPE_CODE_COMPLEX:
366 fprintf_filtered (stream, "complex*%d", TYPE_LENGTH (type));
367 break;
368
369 case TYPE_CODE_FLT:
370 print_equivalent_f77_float_type (type, stream);
371 break;
372
373 case TYPE_CODE_STRING:
374 /* Strings may have dynamic upperbounds (lengths) like arrays. */
375
376 if (TYPE_ARRAY_UPPER_BOUND_TYPE (type) == BOUND_CANNOT_BE_DETERMINED)
377 fprintf_filtered (stream, "character*(*)");
378 else
379 {
380 retcode = f77_get_dynamic_upperbound (type, &upper_bound);
381
382 if (retcode == BOUND_FETCH_ERROR)
383 fprintf_filtered (stream, "character*???");
384 else
385 fprintf_filtered (stream, "character*%d", upper_bound);
386 }
387 break;
388
389 default_case:
390 default:
391 /* Handle types not explicitly handled by the other cases,
c5aa993b
JM
392 such as fundamental types. For these, just print whatever
393 the type name is, as recorded in the type itself. If there
394 is no type name, then complain. */
c906108c
SS
395 if (TYPE_NAME (type) != NULL)
396 fputs_filtered (TYPE_NAME (type), stream);
397 else
398 error ("Invalid type code (%d) in symbol table.", TYPE_CODE (type));
399 break;
400 }
401}