1 /* Support for printing Pascal types for GDB, the GNU debugger.
2 Copyright (C) 2000, 2001, 2002, 2006, 2007, 2008, 2009, 2010, 2011
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
, const char *varstring
,
50 struct ui_file
*stream
, int show
, int level
)
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))
168 fputs_filtered (" (", stream
);
169 /* we must demangle this */
170 while (isdigit (physname
[0]))
177 while (isdigit (physname
[len
]))
181 i
= strtol (physname
, &argname
, 0);
183 storec
= physname
[i
];
185 fputs_filtered (physname
, stream
);
186 physname
[i
] = storec
;
188 if (physname
[0] != 0)
190 fputs_filtered (", ", stream
);
193 fputs_filtered (")", stream
);
197 /* Print any asterisks or open-parentheses needed before the
198 variable name (to describe its type).
200 On outermost call, pass 0 for PASSED_A_PTR.
201 On outermost call, SHOW > 0 means should ignore
202 any typename for TYPE and show its details.
203 SHOW is always zero on recursive calls. */
206 pascal_type_print_varspec_prefix (struct type
*type
, struct ui_file
*stream
,
207 int show
, int passed_a_ptr
)
212 if (TYPE_NAME (type
) && show
<= 0)
217 switch (TYPE_CODE (type
))
220 fprintf_filtered (stream
, "^");
221 pascal_type_print_varspec_prefix (TYPE_TARGET_TYPE (type
), stream
, 0, 1);
222 break; /* pointer should be handled normally in pascal */
224 case TYPE_CODE_METHOD
:
226 fprintf_filtered (stream
, "(");
227 if (TYPE_CODE (TYPE_TARGET_TYPE (type
)) != TYPE_CODE_VOID
)
229 fprintf_filtered (stream
, "function ");
233 fprintf_filtered (stream
, "procedure ");
238 fprintf_filtered (stream
, " ");
239 pascal_type_print_base (TYPE_DOMAIN_TYPE (type
), stream
, 0, passed_a_ptr
);
240 fprintf_filtered (stream
, "::");
245 pascal_type_print_varspec_prefix (TYPE_TARGET_TYPE (type
), stream
, 0, 1);
246 fprintf_filtered (stream
, "&");
251 fprintf_filtered (stream
, "(");
253 if (TYPE_CODE (TYPE_TARGET_TYPE (type
)) != TYPE_CODE_VOID
)
255 fprintf_filtered (stream
, "function ");
259 fprintf_filtered (stream
, "procedure ");
264 case TYPE_CODE_ARRAY
:
266 fprintf_filtered (stream
, "(");
267 fprintf_filtered (stream
, "array ");
268 if (TYPE_LENGTH (TYPE_TARGET_TYPE (type
)) > 0
269 && !TYPE_ARRAY_UPPER_BOUND_IS_UNDEFINED (type
))
270 fprintf_filtered (stream
, "[%s..%s] ",
271 plongest (TYPE_ARRAY_LOWER_BOUND_VALUE (type
)),
272 plongest (TYPE_ARRAY_UPPER_BOUND_VALUE (type
)));
273 fprintf_filtered (stream
, "of ");
276 case TYPE_CODE_UNDEF
:
277 case TYPE_CODE_STRUCT
:
278 case TYPE_CODE_UNION
:
283 case TYPE_CODE_ERROR
:
287 case TYPE_CODE_RANGE
:
288 case TYPE_CODE_STRING
:
289 case TYPE_CODE_BITSTRING
:
290 case TYPE_CODE_COMPLEX
:
291 case TYPE_CODE_TYPEDEF
:
292 /* These types need no prefix. They are listed here so that
293 gcc -Wall will reveal any types that haven't been handled. */
296 error (_("type not handled in pascal_type_print_varspec_prefix()"));
302 pascal_print_func_args (struct type
*type
, struct ui_file
*stream
)
304 int i
, len
= TYPE_NFIELDS (type
);
308 fprintf_filtered (stream
, "(");
310 for (i
= 0; i
< len
; i
++)
314 fputs_filtered (", ", stream
);
317 /* can we find if it is a var parameter ??
318 if ( TYPE_FIELD(type, i) == )
320 fprintf_filtered (stream, "var ");
322 pascal_print_type (TYPE_FIELD_TYPE (type
, i
), "" /* TYPE_FIELD_NAME seems invalid ! */
327 fprintf_filtered (stream
, ")");
331 /* Print any array sizes, function arguments or close parentheses
332 needed after the variable name (to describe its type).
333 Args work like pascal_type_print_varspec_prefix. */
336 pascal_type_print_varspec_suffix (struct type
*type
, struct ui_file
*stream
,
337 int show
, int passed_a_ptr
,
343 if (TYPE_NAME (type
) && show
<= 0)
348 switch (TYPE_CODE (type
))
350 case TYPE_CODE_ARRAY
:
352 fprintf_filtered (stream
, ")");
355 case TYPE_CODE_METHOD
:
357 fprintf_filtered (stream
, ")");
358 pascal_type_print_method_args ("",
361 if (TYPE_CODE (TYPE_TARGET_TYPE (type
)) != TYPE_CODE_VOID
)
363 fprintf_filtered (stream
, " : ");
364 pascal_type_print_varspec_prefix (TYPE_TARGET_TYPE (type
), stream
, 0, 0);
365 pascal_type_print_base (TYPE_TARGET_TYPE (type
), stream
, show
, 0);
366 pascal_type_print_varspec_suffix (TYPE_TARGET_TYPE (type
), stream
, 0,
373 pascal_type_print_varspec_suffix (TYPE_TARGET_TYPE (type
), stream
, 0, 1, 0);
378 fprintf_filtered (stream
, ")");
380 pascal_print_func_args (type
, stream
);
381 if (TYPE_CODE (TYPE_TARGET_TYPE (type
)) != TYPE_CODE_VOID
)
383 fprintf_filtered (stream
, " : ");
384 pascal_type_print_varspec_prefix (TYPE_TARGET_TYPE (type
), stream
, 0, 0);
385 pascal_type_print_base (TYPE_TARGET_TYPE (type
), stream
, show
, 0);
386 pascal_type_print_varspec_suffix (TYPE_TARGET_TYPE (type
), stream
, 0,
391 case TYPE_CODE_UNDEF
:
392 case TYPE_CODE_STRUCT
:
393 case TYPE_CODE_UNION
:
398 case TYPE_CODE_ERROR
:
402 case TYPE_CODE_RANGE
:
403 case TYPE_CODE_STRING
:
404 case TYPE_CODE_BITSTRING
:
405 case TYPE_CODE_COMPLEX
:
406 case TYPE_CODE_TYPEDEF
:
407 /* These types do not need a suffix. They are listed so that
408 gcc -Wall will report types that may not have been considered. */
411 error (_("type not handled in pascal_type_print_varspec_suffix()"));
416 /* Print the name of the type (or the ultimate pointer target,
417 function value or array element), or the description of a
420 SHOW positive means print details about the type (e.g. enum values),
421 and print structure elements passing SHOW - 1 for show.
422 SHOW negative means just print the type name or struct tag if there is one.
423 If there is no name, print something sensible but concise like
425 SHOW zero means just print the type name or struct tag if there is one.
426 If there is no name, print something sensible but not as concise like
427 "struct {int x; int y;}".
429 LEVEL is the number of spaces to indent by.
430 We increase it for some recursive calls. */
433 pascal_type_print_base (struct type
*type
, struct ui_file
*stream
, int show
,
441 s_none
, s_public
, s_private
, s_protected
449 fputs_filtered ("<type unknown>", stream
);
454 if ((TYPE_CODE (type
) == TYPE_CODE_PTR
) && (TYPE_CODE (TYPE_TARGET_TYPE (type
)) == TYPE_CODE_VOID
))
456 fputs_filtered (TYPE_NAME (type
) ? TYPE_NAME (type
) : "pointer",
460 /* When SHOW is zero or less, and there is a valid type name, then always
461 just print the type name directly from the type. */
464 && TYPE_NAME (type
) != NULL
)
466 fputs_filtered (TYPE_NAME (type
), stream
);
470 CHECK_TYPEDEF (type
);
472 switch (TYPE_CODE (type
))
474 case TYPE_CODE_TYPEDEF
:
477 /* case TYPE_CODE_FUNC:
478 case TYPE_CODE_METHOD: */
479 pascal_type_print_base (TYPE_TARGET_TYPE (type
), stream
, show
, level
);
482 case TYPE_CODE_ARRAY
:
483 /* pascal_type_print_varspec_prefix (TYPE_TARGET_TYPE (type), stream, 0, 0);
484 pascal_type_print_base (TYPE_TARGET_TYPE (type), stream, show, level);
485 pascal_type_print_varspec_suffix (TYPE_TARGET_TYPE (type), stream, 0, 0, 0); */
486 pascal_print_type (TYPE_TARGET_TYPE (type
), NULL
, stream
, 0, 0);
490 case TYPE_CODE_METHOD
:
492 pascal_type_print_base (TYPE_TARGET_TYPE (type), stream, show, level);
493 only after args !! */
495 case TYPE_CODE_STRUCT
:
496 if (TYPE_TAG_NAME (type
) != NULL
)
498 fputs_filtered (TYPE_TAG_NAME (type
), stream
);
499 fputs_filtered (" = ", stream
);
501 if (HAVE_CPLUS_STRUCT (type
))
503 fprintf_filtered (stream
, "class ");
507 fprintf_filtered (stream
, "record ");
511 case TYPE_CODE_UNION
:
512 if (TYPE_TAG_NAME (type
) != NULL
)
514 fputs_filtered (TYPE_TAG_NAME (type
), stream
);
515 fputs_filtered (" = ", stream
);
517 fprintf_filtered (stream
, "case <?> of ");
523 /* If we just printed a tag name, no need to print anything else. */
524 if (TYPE_TAG_NAME (type
) == NULL
)
525 fprintf_filtered (stream
, "{...}");
527 else if (show
> 0 || TYPE_TAG_NAME (type
) == NULL
)
529 pascal_type_print_derivation_info (stream
, type
);
531 fprintf_filtered (stream
, "\n");
532 if ((TYPE_NFIELDS (type
) == 0) && (TYPE_NFN_FIELDS (type
) == 0))
534 if (TYPE_STUB (type
))
535 fprintfi_filtered (level
+ 4, stream
, "<incomplete type>\n");
537 fprintfi_filtered (level
+ 4, stream
, "<no data fields>\n");
540 /* Start off with no specific section type, so we can print
541 one for the first field we find, and use that section type
542 thereafter until we find another type. */
544 section_type
= s_none
;
546 /* If there is a base class for this type,
547 do not print the field that it occupies. */
549 len
= TYPE_NFIELDS (type
);
550 for (i
= TYPE_N_BASECLASSES (type
); i
< len
; i
++)
553 /* Don't print out virtual function table. */
554 if ((strncmp (TYPE_FIELD_NAME (type
, i
), "_vptr", 5) == 0)
555 && is_cplus_marker ((TYPE_FIELD_NAME (type
, i
))[5]))
558 /* If this is a pascal object or class we can print the
559 various section labels. */
561 if (HAVE_CPLUS_STRUCT (type
))
563 if (TYPE_FIELD_PROTECTED (type
, i
))
565 if (section_type
!= s_protected
)
567 section_type
= s_protected
;
568 fprintfi_filtered (level
+ 2, stream
,
572 else if (TYPE_FIELD_PRIVATE (type
, i
))
574 if (section_type
!= s_private
)
576 section_type
= s_private
;
577 fprintfi_filtered (level
+ 2, stream
, "private\n");
582 if (section_type
!= s_public
)
584 section_type
= s_public
;
585 fprintfi_filtered (level
+ 2, stream
, "public\n");
590 print_spaces_filtered (level
+ 4, stream
);
591 if (field_is_static (&TYPE_FIELD (type
, i
)))
592 fprintf_filtered (stream
, "static ");
593 pascal_print_type (TYPE_FIELD_TYPE (type
, i
),
594 TYPE_FIELD_NAME (type
, i
),
595 stream
, show
- 1, level
+ 4);
596 if (!field_is_static (&TYPE_FIELD (type
, i
))
597 && TYPE_FIELD_PACKED (type
, i
))
599 /* It is a bitfield. This code does not attempt
600 to look at the bitpos and reconstruct filler,
601 unnamed fields. This would lead to misleading
602 results if the compiler does not put out fields
603 for such things (I don't know what it does). */
604 fprintf_filtered (stream
, " : %d",
605 TYPE_FIELD_BITSIZE (type
, i
));
607 fprintf_filtered (stream
, ";\n");
610 /* If there are both fields and methods, put a space between. */
611 len
= TYPE_NFN_FIELDS (type
);
612 if (len
&& section_type
!= s_none
)
613 fprintf_filtered (stream
, "\n");
615 /* Pbject pascal: print out the methods */
617 for (i
= 0; i
< len
; i
++)
619 struct fn_field
*f
= TYPE_FN_FIELDLIST1 (type
, i
);
620 int j
, len2
= TYPE_FN_FIELDLIST_LENGTH (type
, i
);
621 char *method_name
= TYPE_FN_FIELDLIST_NAME (type
, i
);
623 /* this is GNU C++ specific
624 how can we know constructor/destructor?
625 It might work for GNU pascal */
626 for (j
= 0; j
< len2
; j
++)
628 char *physname
= TYPE_FN_FIELD_PHYSNAME (f
, j
);
630 int is_constructor
= (strncmp (physname
, "__ct__", 6) == 0);
631 int is_destructor
= (strncmp (physname
, "__dt__", 6) == 0);
634 if (TYPE_FN_FIELD_PROTECTED (f
, j
))
636 if (section_type
!= s_protected
)
638 section_type
= s_protected
;
639 fprintfi_filtered (level
+ 2, stream
,
643 else if (TYPE_FN_FIELD_PRIVATE (f
, j
))
645 if (section_type
!= s_private
)
647 section_type
= s_private
;
648 fprintfi_filtered (level
+ 2, stream
, "private\n");
653 if (section_type
!= s_public
)
655 section_type
= s_public
;
656 fprintfi_filtered (level
+ 2, stream
, "public\n");
660 print_spaces_filtered (level
+ 4, stream
);
661 if (TYPE_FN_FIELD_STATIC_P (f
, j
))
662 fprintf_filtered (stream
, "static ");
663 if (TYPE_TARGET_TYPE (TYPE_FN_FIELD_TYPE (f
, j
)) == 0)
665 /* Keep GDB from crashing here. */
666 fprintf_filtered (stream
, "<undefined type> %s;\n",
667 TYPE_FN_FIELD_PHYSNAME (f
, j
));
673 fprintf_filtered (stream
, "constructor ");
675 else if (is_destructor
)
677 fprintf_filtered (stream
, "destructor ");
679 else if (TYPE_TARGET_TYPE (TYPE_FN_FIELD_TYPE (f
, j
)) != 0
680 && TYPE_CODE (TYPE_TARGET_TYPE (
681 TYPE_FN_FIELD_TYPE (f
, j
))) != TYPE_CODE_VOID
)
683 fprintf_filtered (stream
, "function ");
687 fprintf_filtered (stream
, "procedure ");
689 /* this does not work, no idea why !! */
691 pascal_type_print_method_args (physname
,
695 if (TYPE_TARGET_TYPE (TYPE_FN_FIELD_TYPE (f
, j
)) != 0
696 && TYPE_CODE (TYPE_TARGET_TYPE (
697 TYPE_FN_FIELD_TYPE (f
, j
))) != TYPE_CODE_VOID
)
699 fputs_filtered (" : ", stream
);
700 type_print (TYPE_TARGET_TYPE (TYPE_FN_FIELD_TYPE (f
, j
)),
703 if (TYPE_FN_FIELD_VIRTUAL_P (f
, j
))
704 fprintf_filtered (stream
, "; virtual");
706 fprintf_filtered (stream
, ";\n");
709 fprintfi_filtered (level
, stream
, "end");
714 if (TYPE_TAG_NAME (type
) != NULL
)
716 fputs_filtered (TYPE_TAG_NAME (type
), stream
);
718 fputs_filtered (" ", stream
);
720 /* enum is just defined by
721 type enume_name = (enum_member1,enum_member2,...) */
722 fprintf_filtered (stream
, " = ");
726 /* If we just printed a tag name, no need to print anything else. */
727 if (TYPE_TAG_NAME (type
) == NULL
)
728 fprintf_filtered (stream
, "(...)");
730 else if (show
> 0 || TYPE_TAG_NAME (type
) == NULL
)
732 fprintf_filtered (stream
, "(");
733 len
= TYPE_NFIELDS (type
);
735 for (i
= 0; i
< len
; i
++)
739 fprintf_filtered (stream
, ", ");
741 fputs_filtered (TYPE_FIELD_NAME (type
, i
), stream
);
742 if (lastval
!= TYPE_FIELD_BITPOS (type
, i
))
744 fprintf_filtered (stream
, " := %d", TYPE_FIELD_BITPOS (type
, i
));
745 lastval
= TYPE_FIELD_BITPOS (type
, i
);
749 fprintf_filtered (stream
, ")");
754 fprintf_filtered (stream
, "void");
757 case TYPE_CODE_UNDEF
:
758 fprintf_filtered (stream
, "record <unknown>");
761 case TYPE_CODE_ERROR
:
762 fprintf_filtered (stream
, "%s", TYPE_ERROR_NAME (type
));
765 /* this probably does not work for enums */
766 case TYPE_CODE_RANGE
:
768 struct type
*target
= TYPE_TARGET_TYPE (type
);
770 print_type_scalar (target
, TYPE_LOW_BOUND (type
), stream
);
771 fputs_filtered ("..", stream
);
772 print_type_scalar (target
, TYPE_HIGH_BOUND (type
), stream
);
777 fputs_filtered ("set of ", stream
);
778 pascal_print_type (TYPE_INDEX_TYPE (type
), "", stream
,
782 case TYPE_CODE_BITSTRING
:
783 fputs_filtered ("BitString", stream
);
786 case TYPE_CODE_STRING
:
787 fputs_filtered ("String", stream
);
791 /* Handle types not explicitly handled by the other cases,
792 such as fundamental types. For these, just print whatever
793 the type name is, as recorded in the type itself. If there
794 is no type name, then complain. */
795 if (TYPE_NAME (type
) != NULL
)
797 fputs_filtered (TYPE_NAME (type
), stream
);
801 /* At least for dump_symtab, it is important that this not be
803 fprintf_filtered (stream
, "<invalid unnamed pascal type code %d>",
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