1 /* Support for printing Pascal types for GDB, the GNU debugger.
2 Copyright (C) 2000, 2001, 2002, 2006, 2007, 2008, 2009, 2010
3 Free Software Foundation, Inc.
5 This file is part of GDB.
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 3 of the License, or
10 (at your option) any later version.
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with this program. If not, see <http://www.gnu.org/licenses/>. */
20 /* This file is derived from p-typeprint.c */
23 #include "gdb_obstack.h"
24 #include "bfd.h" /* Binary File Description */
27 #include "expression.h"
33 #include "typeprint.h"
35 #include "gdb_string.h"
39 static void pascal_type_print_varspec_suffix (struct type *, struct ui_file *, int, int, int);
41 static void pascal_type_print_derivation_info (struct ui_file *, struct type *);
43 void pascal_type_print_varspec_prefix (struct type *, struct ui_file *, int, int);
46 /* LEVEL is the depth to indent lines by. */
49 pascal_print_type (struct type *type, char *varstring, struct ui_file *stream,
55 code = TYPE_CODE (type);
60 if ((code == TYPE_CODE_FUNC
61 || code == TYPE_CODE_METHOD))
63 pascal_type_print_varspec_prefix (type, stream, show, 0);
66 fputs_filtered (varstring, stream);
68 if ((varstring != NULL && *varstring != '\0')
69 && !(code == TYPE_CODE_FUNC
70 || code == TYPE_CODE_METHOD))
72 fputs_filtered (" : ", stream);
75 if (!(code == TYPE_CODE_FUNC
76 || code == TYPE_CODE_METHOD))
78 pascal_type_print_varspec_prefix (type, stream, show, 0);
81 pascal_type_print_base (type, stream, show, level);
82 /* For demangled function names, we have the arglist as part of the name,
83 so don't print an additional pair of ()'s */
85 demangled_args = varstring ? strchr (varstring, '(') != NULL : 0;
86 pascal_type_print_varspec_suffix (type, stream, show, 0, demangled_args);
90 /* Print a typedef using Pascal syntax. TYPE is the underlying type.
91 NEW_SYMBOL is the symbol naming the type. STREAM is the stream on
95 pascal_print_typedef (struct type *type, struct symbol *new_symbol,
96 struct ui_file *stream)
99 fprintf_filtered (stream, "type ");
100 fprintf_filtered (stream, "%s = ", SYMBOL_PRINT_NAME (new_symbol));
101 type_print (type, "", stream, 0);
102 fprintf_filtered (stream, ";\n");
105 /* If TYPE is a derived type, then print out derivation information.
106 Print only the actual base classes of this type, not the base classes
107 of the base classes. I.E. for the derivation hierarchy:
110 class B : public A {int b; };
111 class C : public B {int c; };
113 Print the type of class C as:
119 Not as the following (like gdb used to), which is not legal C++ syntax for
120 derived types and may be confused with the multiple inheritance form:
122 class C : public B : public A {
126 In general, gdb should try to print the types as closely as possible to
127 the form that they appear in the source code. */
130 pascal_type_print_derivation_info (struct ui_file *stream, struct type *type)
135 for (i = 0; i < TYPE_N_BASECLASSES (type); i++)
137 fputs_filtered (i == 0 ? ": " : ", ", stream);
138 fprintf_filtered (stream, "%s%s ",
139 BASETYPE_VIA_PUBLIC (type, i) ? "public" : "private",
140 BASETYPE_VIA_VIRTUAL (type, i) ? " virtual" : "");
141 name = type_name_no_tag (TYPE_BASECLASS (type, i));
142 fprintf_filtered (stream, "%s", name ? name : "(null)");
146 fputs_filtered (" ", stream);
150 /* Print the Pascal method arguments ARGS to the file STREAM. */
153 pascal_type_print_method_args (char *physname, char *methodname,
154 struct ui_file *stream)
156 int is_constructor = (strncmp (physname, "__ct__", 6) == 0);
157 int is_destructor = (strncmp (physname, "__dt__", 6) == 0);
159 if (is_constructor || is_destructor)
164 fputs_filtered (methodname, stream);
166 if (physname && (*physname != 0))
172 fputs_filtered (" (", stream);
173 /* we must demangle this */
174 while (isdigit (physname[0]))
176 while (isdigit (physname[len]))
180 i = strtol (physname, &argname, 0);
182 storec = physname[i];
184 fputs_filtered (physname, stream);
185 physname[i] = storec;
187 if (physname[0] != 0)
189 fputs_filtered (", ", stream);
192 fputs_filtered (")", stream);
196 /* Print any asterisks or open-parentheses needed before the
197 variable name (to describe its type).
199 On outermost call, pass 0 for PASSED_A_PTR.
200 On outermost call, SHOW > 0 means should ignore
201 any typename for TYPE and show its details.
202 SHOW is always zero on recursive calls. */
205 pascal_type_print_varspec_prefix (struct type *type, struct ui_file *stream,
206 int show, int passed_a_ptr)
211 if (TYPE_NAME (type) && show <= 0)
216 switch (TYPE_CODE (type))
219 fprintf_filtered (stream, "^");
220 pascal_type_print_varspec_prefix (TYPE_TARGET_TYPE (type), stream, 0, 1);
221 break; /* pointer should be handled normally in pascal */
223 case TYPE_CODE_METHOD:
225 fprintf_filtered (stream, "(");
226 if (TYPE_CODE (TYPE_TARGET_TYPE (type)) != TYPE_CODE_VOID)
228 fprintf_filtered (stream, "function ");
232 fprintf_filtered (stream, "procedure ");
237 fprintf_filtered (stream, " ");
238 pascal_type_print_base (TYPE_DOMAIN_TYPE (type), stream, 0, passed_a_ptr);
239 fprintf_filtered (stream, "::");
244 pascal_type_print_varspec_prefix (TYPE_TARGET_TYPE (type), stream, 0, 1);
245 fprintf_filtered (stream, "&");
250 fprintf_filtered (stream, "(");
252 if (TYPE_CODE (TYPE_TARGET_TYPE (type)) != TYPE_CODE_VOID)
254 fprintf_filtered (stream, "function ");
258 fprintf_filtered (stream, "procedure ");
263 case TYPE_CODE_ARRAY:
265 fprintf_filtered (stream, "(");
266 fprintf_filtered (stream, "array ");
267 if (TYPE_LENGTH (TYPE_TARGET_TYPE (type)) > 0
268 && !TYPE_ARRAY_UPPER_BOUND_IS_UNDEFINED (type))
269 fprintf_filtered (stream, "[%s..%s] ",
270 plongest (TYPE_ARRAY_LOWER_BOUND_VALUE (type)),
271 plongest (TYPE_ARRAY_UPPER_BOUND_VALUE (type)));
272 fprintf_filtered (stream, "of ");
275 case TYPE_CODE_UNDEF:
276 case TYPE_CODE_STRUCT:
277 case TYPE_CODE_UNION:
282 case TYPE_CODE_ERROR:
286 case TYPE_CODE_RANGE:
287 case TYPE_CODE_STRING:
288 case TYPE_CODE_BITSTRING:
289 case TYPE_CODE_COMPLEX:
290 case TYPE_CODE_TYPEDEF:
291 /* These types need no prefix. They are listed here so that
292 gcc -Wall will reveal any types that haven't been handled. */
295 error (_("type not handled in pascal_type_print_varspec_prefix()"));
301 pascal_print_func_args (struct type *type, struct ui_file *stream)
303 int i, len = TYPE_NFIELDS (type);
306 fprintf_filtered (stream, "(");
308 for (i = 0; i < len; i++)
312 fputs_filtered (", ", stream);
315 /* can we find if it is a var parameter ??
316 if ( TYPE_FIELD(type, i) == )
318 fprintf_filtered (stream, "var ");
320 pascal_print_type (TYPE_FIELD_TYPE (type, i), "" /* TYPE_FIELD_NAME seems invalid ! */
325 fprintf_filtered (stream, ")");
329 /* Print any array sizes, function arguments or close parentheses
330 needed after the variable name (to describe its type).
331 Args work like pascal_type_print_varspec_prefix. */
334 pascal_type_print_varspec_suffix (struct type *type, struct ui_file *stream,
335 int show, int passed_a_ptr,
341 if (TYPE_NAME (type) && show <= 0)
346 switch (TYPE_CODE (type))
348 case TYPE_CODE_ARRAY:
350 fprintf_filtered (stream, ")");
353 case TYPE_CODE_METHOD:
355 fprintf_filtered (stream, ")");
356 pascal_type_print_method_args ("",
359 if (TYPE_CODE (TYPE_TARGET_TYPE (type)) != TYPE_CODE_VOID)
361 fprintf_filtered (stream, " : ");
362 pascal_type_print_varspec_prefix (TYPE_TARGET_TYPE (type), stream, 0, 0);
363 pascal_type_print_base (TYPE_TARGET_TYPE (type), stream, show, 0);
364 pascal_type_print_varspec_suffix (TYPE_TARGET_TYPE (type), stream, 0,
371 pascal_type_print_varspec_suffix (TYPE_TARGET_TYPE (type), stream, 0, 1, 0);
376 fprintf_filtered (stream, ")");
378 pascal_print_func_args (type, stream);
379 if (TYPE_CODE (TYPE_TARGET_TYPE (type)) != TYPE_CODE_VOID)
381 fprintf_filtered (stream, " : ");
382 pascal_type_print_varspec_prefix (TYPE_TARGET_TYPE (type), stream, 0, 0);
383 pascal_type_print_base (TYPE_TARGET_TYPE (type), stream, show, 0);
384 pascal_type_print_varspec_suffix (TYPE_TARGET_TYPE (type), stream, 0,
389 case TYPE_CODE_UNDEF:
390 case TYPE_CODE_STRUCT:
391 case TYPE_CODE_UNION:
396 case TYPE_CODE_ERROR:
400 case TYPE_CODE_RANGE:
401 case TYPE_CODE_STRING:
402 case TYPE_CODE_BITSTRING:
403 case TYPE_CODE_COMPLEX:
404 case TYPE_CODE_TYPEDEF:
405 /* These types do not need a suffix. They are listed so that
406 gcc -Wall will report types that may not have been considered. */
409 error (_("type not handled in pascal_type_print_varspec_suffix()"));
414 /* Print the name of the type (or the ultimate pointer target,
415 function value or array element), or the description of a
418 SHOW positive means print details about the type (e.g. enum values),
419 and print structure elements passing SHOW - 1 for show.
420 SHOW negative means just print the type name or struct tag if there is one.
421 If there is no name, print something sensible but concise like
423 SHOW zero means just print the type name or struct tag if there is one.
424 If there is no name, print something sensible but not as concise like
425 "struct {int x; int y;}".
427 LEVEL is the number of spaces to indent by.
428 We increase it for some recursive calls. */
431 pascal_type_print_base (struct type *type, struct ui_file *stream, int show,
439 s_none, s_public, s_private, s_protected
447 fputs_filtered ("<type unknown>", stream);
452 if ((TYPE_CODE (type) == TYPE_CODE_PTR) && (TYPE_CODE (TYPE_TARGET_TYPE (type)) == TYPE_CODE_VOID))
454 fputs_filtered (TYPE_NAME (type) ? TYPE_NAME (type) : "pointer",
458 /* When SHOW is zero or less, and there is a valid type name, then always
459 just print the type name directly from the type. */
462 && TYPE_NAME (type) != NULL)
464 fputs_filtered (TYPE_NAME (type), stream);
468 CHECK_TYPEDEF (type);
470 switch (TYPE_CODE (type))
472 case TYPE_CODE_TYPEDEF:
475 /* case TYPE_CODE_FUNC:
476 case TYPE_CODE_METHOD: */
477 pascal_type_print_base (TYPE_TARGET_TYPE (type), stream, show, level);
480 case TYPE_CODE_ARRAY:
481 /* pascal_type_print_varspec_prefix (TYPE_TARGET_TYPE (type), stream, 0, 0);
482 pascal_type_print_base (TYPE_TARGET_TYPE (type), stream, show, level);
483 pascal_type_print_varspec_suffix (TYPE_TARGET_TYPE (type), stream, 0, 0, 0); */
484 pascal_print_type (TYPE_TARGET_TYPE (type), NULL, stream, 0, 0);
488 case TYPE_CODE_METHOD:
490 pascal_type_print_base (TYPE_TARGET_TYPE (type), stream, show, level);
491 only after args !! */
493 case TYPE_CODE_STRUCT:
494 if (TYPE_TAG_NAME (type) != NULL)
496 fputs_filtered (TYPE_TAG_NAME (type), stream);
497 fputs_filtered (" = ", stream);
499 if (HAVE_CPLUS_STRUCT (type))
501 fprintf_filtered (stream, "class ");
505 fprintf_filtered (stream, "record ");
509 case TYPE_CODE_UNION:
510 if (TYPE_TAG_NAME (type) != NULL)
512 fputs_filtered (TYPE_TAG_NAME (type), stream);
513 fputs_filtered (" = ", stream);
515 fprintf_filtered (stream, "case <?> of ");
521 /* If we just printed a tag name, no need to print anything else. */
522 if (TYPE_TAG_NAME (type) == NULL)
523 fprintf_filtered (stream, "{...}");
525 else if (show > 0 || TYPE_TAG_NAME (type) == NULL)
527 pascal_type_print_derivation_info (stream, type);
529 fprintf_filtered (stream, "\n");
530 if ((TYPE_NFIELDS (type) == 0) && (TYPE_NFN_FIELDS (type) == 0))
532 if (TYPE_STUB (type))
533 fprintfi_filtered (level + 4, stream, "<incomplete type>\n");
535 fprintfi_filtered (level + 4, stream, "<no data fields>\n");
538 /* Start off with no specific section type, so we can print
539 one for the first field we find, and use that section type
540 thereafter until we find another type. */
542 section_type = s_none;
544 /* If there is a base class for this type,
545 do not print the field that it occupies. */
547 len = TYPE_NFIELDS (type);
548 for (i = TYPE_N_BASECLASSES (type); i < len; i++)
551 /* Don't print out virtual function table. */
552 if ((strncmp (TYPE_FIELD_NAME (type, i), "_vptr", 5) == 0)
553 && is_cplus_marker ((TYPE_FIELD_NAME (type, i))[5]))
556 /* If this is a pascal object or class we can print the
557 various section labels. */
559 if (HAVE_CPLUS_STRUCT (type))
561 if (TYPE_FIELD_PROTECTED (type, i))
563 if (section_type != s_protected)
565 section_type = s_protected;
566 fprintfi_filtered (level + 2, stream,
570 else if (TYPE_FIELD_PRIVATE (type, i))
572 if (section_type != s_private)
574 section_type = s_private;
575 fprintfi_filtered (level + 2, stream, "private\n");
580 if (section_type != s_public)
582 section_type = s_public;
583 fprintfi_filtered (level + 2, stream, "public\n");
588 print_spaces_filtered (level + 4, stream);
589 if (field_is_static (&TYPE_FIELD (type, i)))
590 fprintf_filtered (stream, "static ");
591 pascal_print_type (TYPE_FIELD_TYPE (type, i),
592 TYPE_FIELD_NAME (type, i),
593 stream, show - 1, level + 4);
594 if (!field_is_static (&TYPE_FIELD (type, i))
595 && TYPE_FIELD_PACKED (type, i))
597 /* It is a bitfield. This code does not attempt
598 to look at the bitpos and reconstruct filler,
599 unnamed fields. This would lead to misleading
600 results if the compiler does not put out fields
601 for such things (I don't know what it does). */
602 fprintf_filtered (stream, " : %d",
603 TYPE_FIELD_BITSIZE (type, i));
605 fprintf_filtered (stream, ";\n");
608 /* If there are both fields and methods, put a space between. */
609 len = TYPE_NFN_FIELDS (type);
610 if (len && section_type != s_none)
611 fprintf_filtered (stream, "\n");
613 /* Pbject pascal: print out the methods */
615 for (i = 0; i < len; i++)
617 struct fn_field *f = TYPE_FN_FIELDLIST1 (type, i);
618 int j, len2 = TYPE_FN_FIELDLIST_LENGTH (type, i);
619 char *method_name = TYPE_FN_FIELDLIST_NAME (type, i);
621 /* this is GNU C++ specific
622 how can we know constructor/destructor?
623 It might work for GNU pascal */
624 for (j = 0; j < len2; j++)
626 char *physname = TYPE_FN_FIELD_PHYSNAME (f, j);
628 int is_constructor = (strncmp (physname, "__ct__", 6) == 0);
629 int is_destructor = (strncmp (physname, "__dt__", 6) == 0);
632 if (TYPE_FN_FIELD_PROTECTED (f, j))
634 if (section_type != s_protected)
636 section_type = s_protected;
637 fprintfi_filtered (level + 2, stream,
641 else if (TYPE_FN_FIELD_PRIVATE (f, j))
643 if (section_type != s_private)
645 section_type = s_private;
646 fprintfi_filtered (level + 2, stream, "private\n");
651 if (section_type != s_public)
653 section_type = s_public;
654 fprintfi_filtered (level + 2, stream, "public\n");
658 print_spaces_filtered (level + 4, stream);
659 if (TYPE_FN_FIELD_STATIC_P (f, j))
660 fprintf_filtered (stream, "static ");
661 if (TYPE_TARGET_TYPE (TYPE_FN_FIELD_TYPE (f, j)) == 0)
663 /* Keep GDB from crashing here. */
664 fprintf_filtered (stream, "<undefined type> %s;\n",
665 TYPE_FN_FIELD_PHYSNAME (f, j));
671 fprintf_filtered (stream, "constructor ");
673 else if (is_destructor)
675 fprintf_filtered (stream, "destructor ");
677 else if (TYPE_TARGET_TYPE (TYPE_FN_FIELD_TYPE (f, j)) != 0
678 && TYPE_CODE (TYPE_TARGET_TYPE (
679 TYPE_FN_FIELD_TYPE (f, j))) != TYPE_CODE_VOID)
681 fprintf_filtered (stream, "function ");
685 fprintf_filtered (stream, "procedure ");
687 /* this does not work, no idea why !! */
689 pascal_type_print_method_args (physname,
693 if (TYPE_TARGET_TYPE (TYPE_FN_FIELD_TYPE (f, j)) != 0
694 && TYPE_CODE (TYPE_TARGET_TYPE (
695 TYPE_FN_FIELD_TYPE (f, j))) != TYPE_CODE_VOID)
697 fputs_filtered (" : ", stream);
698 type_print (TYPE_TARGET_TYPE (TYPE_FN_FIELD_TYPE (f, j)),
701 if (TYPE_FN_FIELD_VIRTUAL_P (f, j))
702 fprintf_filtered (stream, "; virtual");
704 fprintf_filtered (stream, ";\n");
707 fprintfi_filtered (level, stream, "end");
712 if (TYPE_TAG_NAME (type) != NULL)
714 fputs_filtered (TYPE_TAG_NAME (type), stream);
716 fputs_filtered (" ", stream);
718 /* enum is just defined by
719 type enume_name = (enum_member1,enum_member2,...) */
720 fprintf_filtered (stream, " = ");
724 /* If we just printed a tag name, no need to print anything else. */
725 if (TYPE_TAG_NAME (type) == NULL)
726 fprintf_filtered (stream, "(...)");
728 else if (show > 0 || TYPE_TAG_NAME (type) == NULL)
730 fprintf_filtered (stream, "(");
731 len = TYPE_NFIELDS (type);
733 for (i = 0; i < len; i++)
737 fprintf_filtered (stream, ", ");
739 fputs_filtered (TYPE_FIELD_NAME (type, i), stream);
740 if (lastval != TYPE_FIELD_BITPOS (type, i))
742 fprintf_filtered (stream, " := %d", TYPE_FIELD_BITPOS (type, i));
743 lastval = TYPE_FIELD_BITPOS (type, i);
747 fprintf_filtered (stream, ")");
752 fprintf_filtered (stream, "void");
755 case TYPE_CODE_UNDEF:
756 fprintf_filtered (stream, "record <unknown>");
759 case TYPE_CODE_ERROR:
760 fprintf_filtered (stream, "<unknown type>");
763 /* this probably does not work for enums */
764 case TYPE_CODE_RANGE:
766 struct type *target = TYPE_TARGET_TYPE (type);
767 print_type_scalar (target, TYPE_LOW_BOUND (type), stream);
768 fputs_filtered ("..", stream);
769 print_type_scalar (target, TYPE_HIGH_BOUND (type), stream);
774 fputs_filtered ("set of ", stream);
775 pascal_print_type (TYPE_INDEX_TYPE (type), "", stream,
779 case TYPE_CODE_BITSTRING:
780 fputs_filtered ("BitString", stream);
783 case TYPE_CODE_STRING:
784 fputs_filtered ("String", stream);
788 /* Handle types not explicitly handled by the other cases,
789 such as fundamental types. For these, just print whatever
790 the type name is, as recorded in the type itself. If there
791 is no type name, then complain. */
792 if (TYPE_NAME (type) != NULL)
794 fputs_filtered (TYPE_NAME (type), stream);
798 /* At least for dump_symtab, it is important that this not be
800 fprintf_filtered (stream, "<invalid unnamed pascal type code %d>",