1 /* Support for printing Pascal types for GDB, the GNU debugger.
2 Copyright (C) 2000-2023 Free Software Foundation, Inc.
4 This file is part of GDB.
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.
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.
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/>. */
19 /* This file is derived from p-typeprint.c */
22 #include "gdbsupport/gdb_obstack.h"
23 #include "bfd.h" /* Binary File Description */
26 #include "expression.h"
32 #include "typeprint.h"
33 #include "gdb-demangle.h"
35 #include "cli/cli-style.h"
40 pascal_language::print_type (struct type
*type
, const char *varstring
,
41 struct ui_file
*stream
, int show
, int level
,
42 const struct type_print_options
*flags
) const
50 type
= check_typedef (type
);
52 if ((code
== TYPE_CODE_FUNC
53 || code
== TYPE_CODE_METHOD
))
55 type_print_varspec_prefix (type
, stream
, show
, 0, flags
);
58 gdb_puts (varstring
, stream
);
60 if ((varstring
!= NULL
&& *varstring
!= '\0')
61 && !(code
== TYPE_CODE_FUNC
62 || code
== TYPE_CODE_METHOD
))
64 gdb_puts (" : ", stream
);
67 if (!(code
== TYPE_CODE_FUNC
68 || code
== TYPE_CODE_METHOD
))
70 type_print_varspec_prefix (type
, stream
, show
, 0, flags
);
73 type_print_base (type
, stream
, show
, level
, flags
);
74 /* For demangled function names, we have the arglist as part of the name,
75 so don't print an additional pair of ()'s. */
77 demangled_args
= varstring
? strchr (varstring
, '(') != NULL
: 0;
78 type_print_varspec_suffix (type
, stream
, show
, 0, demangled_args
,
86 pascal_language::print_typedef (struct type
*type
, struct symbol
*new_symbol
,
87 struct ui_file
*stream
) const
89 type
= check_typedef (type
);
90 gdb_printf (stream
, "type ");
91 gdb_printf (stream
, "%s = ", new_symbol
->print_name ());
92 type_print (type
, "", stream
, 0);
93 gdb_printf (stream
, ";");
99 pascal_language::type_print_derivation_info (struct ui_file
*stream
,
100 struct type
*type
) const
105 for (i
= 0; i
< TYPE_N_BASECLASSES (type
); i
++)
107 gdb_puts (i
== 0 ? ": " : ", ", stream
);
108 gdb_printf (stream
, "%s%s ",
109 BASETYPE_VIA_PUBLIC (type
, i
) ? "public" : "private",
110 BASETYPE_VIA_VIRTUAL (type
, i
) ? " virtual" : "");
111 name
= TYPE_BASECLASS (type
, i
)->name ();
112 gdb_printf (stream
, "%s", name
? name
: "(null)");
116 gdb_puts (" ", stream
);
123 pascal_language::type_print_method_args (const char *physname
,
124 const char *methodname
,
125 struct ui_file
*stream
) const
127 int is_constructor
= (startswith (physname
, "__ct__"));
128 int is_destructor
= (startswith (physname
, "__dt__"));
130 if (is_constructor
|| is_destructor
)
135 gdb_puts (methodname
, stream
);
137 if (physname
&& (*physname
!= 0))
139 gdb_puts (" (", stream
);
140 /* We must demangle this. */
141 while (isdigit (physname
[0]))
147 while (isdigit (physname
[len
]))
151 i
= strtol (physname
, &argname
, 0);
154 for (j
= 0; j
< i
; ++j
)
155 gdb_putc (physname
[j
], stream
);
158 if (physname
[0] != 0)
160 gdb_puts (", ", stream
);
163 gdb_puts (")", stream
);
170 pascal_language::type_print_varspec_prefix (struct type
*type
,
171 struct ui_file
*stream
,
172 int show
, int passed_a_ptr
,
173 const struct type_print_options
*flags
) const
178 if (type
->name () && show
<= 0)
183 switch (type
->code ())
186 gdb_printf (stream
, "^");
187 type_print_varspec_prefix (type
->target_type (), stream
, 0, 1,
189 break; /* Pointer should be handled normally
192 case TYPE_CODE_METHOD
:
194 gdb_printf (stream
, "(");
195 if (type
->target_type () != NULL
196 && type
->target_type ()->code () != TYPE_CODE_VOID
)
198 gdb_printf (stream
, "function ");
202 gdb_printf (stream
, "procedure ");
207 gdb_printf (stream
, " ");
208 type_print_base (TYPE_SELF_TYPE (type
),
209 stream
, 0, passed_a_ptr
, flags
);
210 gdb_printf (stream
, "::");
215 type_print_varspec_prefix (type
->target_type (), stream
, 0, 1,
217 gdb_printf (stream
, "&");
222 gdb_printf (stream
, "(");
224 if (type
->target_type () != NULL
225 && type
->target_type ()->code () != TYPE_CODE_VOID
)
227 gdb_printf (stream
, "function ");
231 gdb_printf (stream
, "procedure ");
236 case TYPE_CODE_ARRAY
:
238 gdb_printf (stream
, "(");
239 gdb_printf (stream
, "array ");
240 if (type
->target_type ()->length () > 0
241 && type
->bounds ()->high
.is_constant ())
242 gdb_printf (stream
, "[%s..%s] ",
243 plongest (type
->bounds ()->low
.const_val ()),
244 plongest (type
->bounds ()->high
.const_val ()));
245 gdb_printf (stream
, "of ");
253 pascal_language::print_func_args (struct type
*type
, struct ui_file
*stream
,
254 const struct type_print_options
*flags
) const
256 int i
, len
= type
->num_fields ();
260 gdb_printf (stream
, "(");
262 for (i
= 0; i
< len
; i
++)
266 gdb_puts (", ", stream
);
267 stream
->wrap_here (4);
269 /* Can we find if it is a var parameter ??
270 if ( TYPE_FIELD(type, i) == )
272 gdb_printf (stream, "var ");
274 print_type (type
->field (i
).type (), "" /* TYPE_FIELD_NAME
276 ,stream
, -1, 0, flags
);
280 gdb_printf (stream
, ")");
287 pascal_language::type_print_func_varspec_suffix (struct type
*type
,
288 struct ui_file
*stream
,
289 int show
, int passed_a_ptr
,
291 const struct type_print_options
*flags
) const
293 if (type
->target_type () == NULL
294 || type
->target_type ()->code () != TYPE_CODE_VOID
)
296 gdb_printf (stream
, " : ");
297 type_print_varspec_prefix (type
->target_type (),
298 stream
, 0, 0, flags
);
300 if (type
->target_type () == NULL
)
301 type_print_unknown_return_type (stream
);
303 type_print_base (type
->target_type (), stream
, show
, 0,
306 type_print_varspec_suffix (type
->target_type (), stream
, 0,
307 passed_a_ptr
, 0, flags
);
314 pascal_language::type_print_varspec_suffix (struct type
*type
,
315 struct ui_file
*stream
,
316 int show
, int passed_a_ptr
,
318 const struct type_print_options
*flags
) const
323 if (type
->name () && show
<= 0)
328 switch (type
->code ())
330 case TYPE_CODE_ARRAY
:
332 gdb_printf (stream
, ")");
335 case TYPE_CODE_METHOD
:
337 gdb_printf (stream
, ")");
338 type_print_method_args ("", "", stream
);
339 type_print_func_varspec_suffix (type
, stream
, show
,
340 passed_a_ptr
, 0, flags
);
345 type_print_varspec_suffix (type
->target_type (),
346 stream
, 0, 1, 0, flags
);
351 gdb_printf (stream
, ")");
353 print_func_args (type
, stream
, flags
);
354 type_print_func_varspec_suffix (type
, stream
, show
,
355 passed_a_ptr
, 0, flags
);
363 pascal_language::type_print_base (struct type
*type
, struct ui_file
*stream
, int show
,
364 int level
, const struct type_print_options
*flags
) const
371 s_none
, s_public
, s_private
, s_protected
376 stream
->wrap_here (4);
379 fputs_styled ("<type unknown>", metadata_style
.style (), stream
);
384 if ((type
->code () == TYPE_CODE_PTR
)
385 && (type
->target_type ()->code () == TYPE_CODE_VOID
))
387 gdb_puts (type
->name () ? type
->name () : "pointer",
391 /* When SHOW is zero or less, and there is a valid type name, then always
392 just print the type name directly from the type. */
395 && type
->name () != NULL
)
397 gdb_puts (type
->name (), stream
);
401 type
= check_typedef (type
);
403 switch (type
->code ())
405 case TYPE_CODE_TYPEDEF
:
408 type_print_base (type
->target_type (), stream
, show
, level
,
412 case TYPE_CODE_ARRAY
:
413 print_type (type
->target_type (), NULL
, stream
, 0, 0, flags
);
417 case TYPE_CODE_METHOD
:
419 case TYPE_CODE_STRUCT
:
420 if (type
->name () != NULL
)
422 gdb_puts (type
->name (), stream
);
423 gdb_puts (" = ", stream
);
425 if (HAVE_CPLUS_STRUCT (type
))
427 gdb_printf (stream
, "class ");
431 gdb_printf (stream
, "record ");
435 case TYPE_CODE_UNION
:
436 if (type
->name () != NULL
)
438 gdb_puts (type
->name (), stream
);
439 gdb_puts (" = ", stream
);
441 gdb_printf (stream
, "case <?> of ");
444 stream
->wrap_here (4);
447 /* If we just printed a tag name, no need to print anything else. */
448 if (type
->name () == NULL
)
449 gdb_printf (stream
, "{...}");
451 else if (show
> 0 || type
->name () == NULL
)
453 type_print_derivation_info (stream
, type
);
455 gdb_printf (stream
, "\n");
456 if ((type
->num_fields () == 0) && (TYPE_NFN_FIELDS (type
) == 0))
458 if (type
->is_stub ())
459 gdb_printf (stream
, "%*s<incomplete type>\n",
462 gdb_printf (stream
, "%*s<no data fields>\n",
466 /* Start off with no specific section type, so we can print
467 one for the first field we find, and use that section type
468 thereafter until we find another type. */
470 section_type
= s_none
;
472 /* If there is a base class for this type,
473 do not print the field that it occupies. */
475 len
= type
->num_fields ();
476 for (i
= TYPE_N_BASECLASSES (type
); i
< len
; i
++)
479 /* Don't print out virtual function table. */
480 if ((startswith (type
->field (i
).name (), "_vptr"))
481 && is_cplus_marker ((type
->field (i
).name ())[5]))
484 /* If this is a pascal object or class we can print the
485 various section labels. */
487 if (HAVE_CPLUS_STRUCT (type
))
489 if (TYPE_FIELD_PROTECTED (type
, i
))
491 if (section_type
!= s_protected
)
493 section_type
= s_protected
;
494 gdb_printf (stream
, "%*sprotected\n",
498 else if (TYPE_FIELD_PRIVATE (type
, i
))
500 if (section_type
!= s_private
)
502 section_type
= s_private
;
503 gdb_printf (stream
, "%*sprivate\n",
509 if (section_type
!= s_public
)
511 section_type
= s_public
;
512 gdb_printf (stream
, "%*spublic\n",
518 print_spaces (level
+ 4, stream
);
519 if (type
->field (i
).is_static ())
520 gdb_printf (stream
, "static ");
521 print_type (type
->field (i
).type (),
522 type
->field (i
).name (),
523 stream
, show
- 1, level
+ 4, flags
);
524 if (!type
->field (i
).is_static ()
525 && TYPE_FIELD_PACKED (type
, i
))
527 /* It is a bitfield. This code does not attempt
528 to look at the bitpos and reconstruct filler,
529 unnamed fields. This would lead to misleading
530 results if the compiler does not put out fields
531 for such things (I don't know what it does). */
532 gdb_printf (stream
, " : %d",
533 TYPE_FIELD_BITSIZE (type
, i
));
535 gdb_printf (stream
, ";\n");
538 /* If there are both fields and methods, put a space between. */
539 len
= TYPE_NFN_FIELDS (type
);
540 if (len
&& section_type
!= s_none
)
541 gdb_printf (stream
, "\n");
543 /* Object pascal: print out the methods. */
545 for (i
= 0; i
< len
; i
++)
547 struct fn_field
*f
= TYPE_FN_FIELDLIST1 (type
, i
);
548 int j
, len2
= TYPE_FN_FIELDLIST_LENGTH (type
, i
);
549 const char *method_name
= TYPE_FN_FIELDLIST_NAME (type
, i
);
551 /* this is GNU C++ specific
552 how can we know constructor/destructor?
553 It might work for GNU pascal. */
554 for (j
= 0; j
< len2
; j
++)
556 const char *physname
= TYPE_FN_FIELD_PHYSNAME (f
, j
);
558 int is_constructor
= (startswith (physname
, "__ct__"));
559 int is_destructor
= (startswith (physname
, "__dt__"));
562 if (TYPE_FN_FIELD_PROTECTED (f
, j
))
564 if (section_type
!= s_protected
)
566 section_type
= s_protected
;
567 gdb_printf (stream
, "%*sprotected\n",
571 else if (TYPE_FN_FIELD_PRIVATE (f
, j
))
573 if (section_type
!= s_private
)
575 section_type
= s_private
;
576 gdb_printf (stream
, "%*sprivate\n",
582 if (section_type
!= s_public
)
584 section_type
= s_public
;
585 gdb_printf (stream
, "%*spublic\n",
590 print_spaces (level
+ 4, stream
);
591 if (TYPE_FN_FIELD_STATIC_P (f
, j
))
592 gdb_printf (stream
, "static ");
593 if (TYPE_FN_FIELD_TYPE (f
, j
)->target_type () == 0)
595 /* Keep GDB from crashing here. */
596 gdb_printf (stream
, "<undefined type> %s;\n",
597 TYPE_FN_FIELD_PHYSNAME (f
, j
));
603 gdb_printf (stream
, "constructor ");
605 else if (is_destructor
)
607 gdb_printf (stream
, "destructor ");
609 else if (TYPE_FN_FIELD_TYPE (f
, j
)->target_type () != 0
610 && (TYPE_FN_FIELD_TYPE(f
, j
)->target_type ()->code ()
613 gdb_printf (stream
, "function ");
617 gdb_printf (stream
, "procedure ");
619 /* This does not work, no idea why !! */
621 type_print_method_args (physname
, method_name
, stream
);
623 if (TYPE_FN_FIELD_TYPE (f
, j
)->target_type () != 0
624 && (TYPE_FN_FIELD_TYPE(f
, j
)->target_type ()->code ()
627 gdb_puts (" : ", stream
);
628 type_print (TYPE_FN_FIELD_TYPE (f
, j
)->target_type (),
631 if (TYPE_FN_FIELD_VIRTUAL_P (f
, j
))
632 gdb_printf (stream
, "; virtual");
634 gdb_printf (stream
, ";\n");
637 gdb_printf (stream
, "%*send", level
, "");
642 if (type
->name () != NULL
)
644 gdb_puts (type
->name (), stream
);
646 gdb_puts (" ", stream
);
648 /* enum is just defined by
649 type enume_name = (enum_member1,enum_member2,...) */
650 gdb_printf (stream
, " = ");
651 stream
->wrap_here (4);
654 /* If we just printed a tag name, no need to print anything else. */
655 if (type
->name () == NULL
)
656 gdb_printf (stream
, "(...)");
658 else if (show
> 0 || type
->name () == NULL
)
660 gdb_printf (stream
, "(");
661 len
= type
->num_fields ();
663 for (i
= 0; i
< len
; i
++)
667 gdb_printf (stream
, ", ");
668 stream
->wrap_here (4);
669 gdb_puts (type
->field (i
).name (), stream
);
670 if (lastval
!= type
->field (i
).loc_enumval ())
674 plongest (type
->field (i
).loc_enumval ()));
675 lastval
= type
->field (i
).loc_enumval ();
679 gdb_printf (stream
, ")");
684 gdb_printf (stream
, "void");
687 case TYPE_CODE_UNDEF
:
688 gdb_printf (stream
, "record <unknown>");
691 case TYPE_CODE_ERROR
:
692 gdb_printf (stream
, "%s", TYPE_ERROR_NAME (type
));
695 /* this probably does not work for enums. */
696 case TYPE_CODE_RANGE
:
698 struct type
*target
= type
->target_type ();
700 print_type_scalar (target
, type
->bounds ()->low
.const_val (), stream
);
701 gdb_puts ("..", stream
);
702 print_type_scalar (target
, type
->bounds ()->high
.const_val (), stream
);
707 gdb_puts ("set of ", stream
);
708 print_type (type
->index_type (), "", stream
,
709 show
- 1, level
, flags
);
712 case TYPE_CODE_STRING
:
713 gdb_puts ("String", stream
);
717 /* Handle types not explicitly handled by the other cases,
718 such as fundamental types. For these, just print whatever
719 the type name is, as recorded in the type itself. If there
720 is no type name, then complain. */
721 if (type
->name () != NULL
)
723 gdb_puts (type
->name (), stream
);
727 /* At least for dump_symtab, it is important that this not be
729 fprintf_styled (stream
, metadata_style
.style (),
730 "<invalid unnamed pascal type code %d>",