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213516ef31
This commit is the result of running the gdb/copyright.py script, which automated the update of the copyright year range for all source files managed by the GDB project to be updated to include year 2023.
782 lines
19 KiB
C
782 lines
19 KiB
C
/* Support for printing Pascal types for GDB, the GNU debugger.
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Copyright (C) 2000-2023 Free Software Foundation, Inc.
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This file is part of GDB.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>. */
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/* This file is derived from p-typeprint.c */
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#include "defs.h"
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#include "gdbsupport/gdb_obstack.h"
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#include "bfd.h" /* Binary File Description */
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#include "symtab.h"
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#include "gdbtypes.h"
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#include "expression.h"
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#include "value.h"
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#include "gdbcore.h"
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#include "target.h"
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#include "language.h"
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#include "p-lang.h"
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#include "typeprint.h"
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#include "gdb-demangle.h"
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#include <ctype.h>
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#include "cli/cli-style.h"
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/* See language.h. */
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void
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pascal_language::print_type (struct type *type, const char *varstring,
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struct ui_file *stream, int show, int level,
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const struct type_print_options *flags) const
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{
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enum type_code code;
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int demangled_args;
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code = type->code ();
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if (show > 0)
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type = check_typedef (type);
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if ((code == TYPE_CODE_FUNC
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|| code == TYPE_CODE_METHOD))
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{
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type_print_varspec_prefix (type, stream, show, 0, flags);
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}
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/* first the name */
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gdb_puts (varstring, stream);
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if ((varstring != NULL && *varstring != '\0')
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&& !(code == TYPE_CODE_FUNC
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|| code == TYPE_CODE_METHOD))
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{
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gdb_puts (" : ", stream);
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}
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if (!(code == TYPE_CODE_FUNC
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|| code == TYPE_CODE_METHOD))
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{
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type_print_varspec_prefix (type, stream, show, 0, flags);
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}
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type_print_base (type, stream, show, level, flags);
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/* For demangled function names, we have the arglist as part of the name,
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so don't print an additional pair of ()'s. */
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demangled_args = varstring ? strchr (varstring, '(') != NULL : 0;
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type_print_varspec_suffix (type, stream, show, 0, demangled_args,
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flags);
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}
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/* See language.h. */
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void
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pascal_language::print_typedef (struct type *type, struct symbol *new_symbol,
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struct ui_file *stream) const
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{
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type = check_typedef (type);
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gdb_printf (stream, "type ");
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gdb_printf (stream, "%s = ", new_symbol->print_name ());
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type_print (type, "", stream, 0);
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gdb_printf (stream, ";");
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}
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/* See p-lang.h. */
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void
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pascal_language::type_print_derivation_info (struct ui_file *stream,
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struct type *type) const
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{
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const char *name;
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int i;
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for (i = 0; i < TYPE_N_BASECLASSES (type); i++)
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{
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gdb_puts (i == 0 ? ": " : ", ", stream);
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gdb_printf (stream, "%s%s ",
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BASETYPE_VIA_PUBLIC (type, i) ? "public" : "private",
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BASETYPE_VIA_VIRTUAL (type, i) ? " virtual" : "");
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name = TYPE_BASECLASS (type, i)->name ();
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gdb_printf (stream, "%s", name ? name : "(null)");
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}
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if (i > 0)
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{
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gdb_puts (" ", stream);
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}
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}
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/* See p-lang.h. */
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void
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pascal_language::type_print_method_args (const char *physname,
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const char *methodname,
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struct ui_file *stream) const
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{
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int is_constructor = (startswith (physname, "__ct__"));
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int is_destructor = (startswith (physname, "__dt__"));
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if (is_constructor || is_destructor)
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{
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physname += 6;
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}
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gdb_puts (methodname, stream);
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if (physname && (*physname != 0))
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{
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gdb_puts (" (", stream);
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/* We must demangle this. */
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while (isdigit (physname[0]))
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{
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int len = 0;
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int i, j;
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char *argname;
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while (isdigit (physname[len]))
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{
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len++;
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}
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i = strtol (physname, &argname, 0);
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physname += len;
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for (j = 0; j < i; ++j)
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gdb_putc (physname[j], stream);
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physname += i;
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if (physname[0] != 0)
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{
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gdb_puts (", ", stream);
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}
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}
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gdb_puts (")", stream);
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}
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}
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/* See p-lang.h. */
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void
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pascal_language::type_print_varspec_prefix (struct type *type,
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struct ui_file *stream,
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int show, int passed_a_ptr,
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const struct type_print_options *flags) const
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{
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if (type == 0)
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return;
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if (type->name () && show <= 0)
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return;
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QUIT;
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switch (type->code ())
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{
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case TYPE_CODE_PTR:
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gdb_printf (stream, "^");
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type_print_varspec_prefix (type->target_type (), stream, 0, 1,
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flags);
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break; /* Pointer should be handled normally
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in pascal. */
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case TYPE_CODE_METHOD:
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if (passed_a_ptr)
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gdb_printf (stream, "(");
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if (type->target_type () != NULL
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&& type->target_type ()->code () != TYPE_CODE_VOID)
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{
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gdb_printf (stream, "function ");
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}
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else
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{
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gdb_printf (stream, "procedure ");
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}
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if (passed_a_ptr)
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{
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gdb_printf (stream, " ");
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type_print_base (TYPE_SELF_TYPE (type),
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stream, 0, passed_a_ptr, flags);
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gdb_printf (stream, "::");
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}
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break;
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case TYPE_CODE_REF:
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type_print_varspec_prefix (type->target_type (), stream, 0, 1,
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flags);
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gdb_printf (stream, "&");
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break;
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case TYPE_CODE_FUNC:
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if (passed_a_ptr)
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gdb_printf (stream, "(");
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if (type->target_type () != NULL
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&& type->target_type ()->code () != TYPE_CODE_VOID)
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{
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gdb_printf (stream, "function ");
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}
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else
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{
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gdb_printf (stream, "procedure ");
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}
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break;
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case TYPE_CODE_ARRAY:
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if (passed_a_ptr)
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gdb_printf (stream, "(");
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gdb_printf (stream, "array ");
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if (type->target_type ()->length () > 0
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&& type->bounds ()->high.kind () != PROP_UNDEFINED)
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gdb_printf (stream, "[%s..%s] ",
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plongest (type->bounds ()->low.const_val ()),
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plongest (type->bounds ()->high.const_val ()));
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gdb_printf (stream, "of ");
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break;
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case TYPE_CODE_UNDEF:
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case TYPE_CODE_STRUCT:
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case TYPE_CODE_UNION:
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case TYPE_CODE_ENUM:
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case TYPE_CODE_INT:
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case TYPE_CODE_FLT:
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case TYPE_CODE_VOID:
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case TYPE_CODE_ERROR:
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case TYPE_CODE_CHAR:
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case TYPE_CODE_BOOL:
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case TYPE_CODE_SET:
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case TYPE_CODE_RANGE:
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case TYPE_CODE_STRING:
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case TYPE_CODE_COMPLEX:
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case TYPE_CODE_TYPEDEF:
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case TYPE_CODE_FIXED_POINT:
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/* These types need no prefix. They are listed here so that
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gcc -Wall will reveal any types that haven't been handled. */
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break;
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default:
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gdb_assert_not_reached ("unexpected type");
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break;
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}
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}
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/* See p-lang.h. */
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void
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pascal_language::print_func_args (struct type *type, struct ui_file *stream,
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const struct type_print_options *flags) const
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{
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int i, len = type->num_fields ();
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if (len)
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{
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gdb_printf (stream, "(");
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}
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for (i = 0; i < len; i++)
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{
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if (i > 0)
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{
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gdb_puts (", ", stream);
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stream->wrap_here (4);
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}
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/* Can we find if it is a var parameter ??
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if ( TYPE_FIELD(type, i) == )
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{
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gdb_printf (stream, "var ");
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} */
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print_type (type->field (i).type (), "" /* TYPE_FIELD_NAME
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seems invalid! */
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,stream, -1, 0, flags);
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}
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if (len)
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{
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gdb_printf (stream, ")");
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}
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}
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/* See p-lang.h. */
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void
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pascal_language::type_print_func_varspec_suffix (struct type *type,
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struct ui_file *stream,
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int show, int passed_a_ptr,
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int demangled_args,
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const struct type_print_options *flags) const
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{
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if (type->target_type () == NULL
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|| type->target_type ()->code () != TYPE_CODE_VOID)
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{
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gdb_printf (stream, " : ");
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type_print_varspec_prefix (type->target_type (),
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stream, 0, 0, flags);
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if (type->target_type () == NULL)
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type_print_unknown_return_type (stream);
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else
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type_print_base (type->target_type (), stream, show, 0,
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flags);
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type_print_varspec_suffix (type->target_type (), stream, 0,
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passed_a_ptr, 0, flags);
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}
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}
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/* See p-lang.h. */
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void
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pascal_language::type_print_varspec_suffix (struct type *type,
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struct ui_file *stream,
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int show, int passed_a_ptr,
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int demangled_args,
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const struct type_print_options *flags) const
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{
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if (type == 0)
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return;
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if (type->name () && show <= 0)
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return;
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QUIT;
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switch (type->code ())
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{
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case TYPE_CODE_ARRAY:
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if (passed_a_ptr)
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gdb_printf (stream, ")");
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break;
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case TYPE_CODE_METHOD:
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if (passed_a_ptr)
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gdb_printf (stream, ")");
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type_print_method_args ("", "", stream);
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type_print_func_varspec_suffix (type, stream, show,
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passed_a_ptr, 0, flags);
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break;
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case TYPE_CODE_PTR:
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case TYPE_CODE_REF:
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type_print_varspec_suffix (type->target_type (),
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stream, 0, 1, 0, flags);
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break;
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case TYPE_CODE_FUNC:
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if (passed_a_ptr)
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gdb_printf (stream, ")");
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if (!demangled_args)
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print_func_args (type, stream, flags);
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type_print_func_varspec_suffix (type, stream, show,
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passed_a_ptr, 0, flags);
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break;
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case TYPE_CODE_UNDEF:
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case TYPE_CODE_STRUCT:
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case TYPE_CODE_UNION:
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case TYPE_CODE_ENUM:
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case TYPE_CODE_INT:
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case TYPE_CODE_FLT:
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case TYPE_CODE_VOID:
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case TYPE_CODE_ERROR:
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case TYPE_CODE_CHAR:
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case TYPE_CODE_BOOL:
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case TYPE_CODE_SET:
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case TYPE_CODE_RANGE:
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case TYPE_CODE_STRING:
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case TYPE_CODE_COMPLEX:
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case TYPE_CODE_TYPEDEF:
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case TYPE_CODE_FIXED_POINT:
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/* These types do not need a suffix. They are listed so that
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gcc -Wall will report types that may not have been considered. */
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break;
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default:
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gdb_assert_not_reached ("unexpected type");
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break;
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}
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}
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/* See p-lang.h. */
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void
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pascal_language::type_print_base (struct type *type, struct ui_file *stream, int show,
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int level, const struct type_print_options *flags) const
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{
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int i;
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int len;
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LONGEST lastval;
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enum
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{
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s_none, s_public, s_private, s_protected
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}
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section_type;
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QUIT;
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stream->wrap_here (4);
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if (type == NULL)
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{
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fputs_styled ("<type unknown>", metadata_style.style (), stream);
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return;
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}
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/* void pointer */
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if ((type->code () == TYPE_CODE_PTR)
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&& (type->target_type ()->code () == TYPE_CODE_VOID))
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{
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gdb_puts (type->name () ? type->name () : "pointer",
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stream);
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return;
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}
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/* When SHOW is zero or less, and there is a valid type name, then always
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just print the type name directly from the type. */
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if (show <= 0
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&& type->name () != NULL)
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{
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gdb_puts (type->name (), stream);
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return;
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}
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type = check_typedef (type);
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switch (type->code ())
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{
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case TYPE_CODE_TYPEDEF:
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case TYPE_CODE_PTR:
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case TYPE_CODE_REF:
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type_print_base (type->target_type (), stream, show, level,
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flags);
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break;
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case TYPE_CODE_ARRAY:
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print_type (type->target_type (), NULL, stream, 0, 0, flags);
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break;
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case TYPE_CODE_FUNC:
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case TYPE_CODE_METHOD:
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break;
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case TYPE_CODE_STRUCT:
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if (type->name () != NULL)
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{
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gdb_puts (type->name (), stream);
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gdb_puts (" = ", stream);
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}
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if (HAVE_CPLUS_STRUCT (type))
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{
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gdb_printf (stream, "class ");
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}
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else
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{
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gdb_printf (stream, "record ");
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}
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goto struct_union;
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case TYPE_CODE_UNION:
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if (type->name () != NULL)
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{
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gdb_puts (type->name (), stream);
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gdb_puts (" = ", stream);
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}
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gdb_printf (stream, "case <?> of ");
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struct_union:
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stream->wrap_here (4);
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if (show < 0)
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{
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/* If we just printed a tag name, no need to print anything else. */
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if (type->name () == NULL)
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gdb_printf (stream, "{...}");
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}
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else if (show > 0 || type->name () == NULL)
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{
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type_print_derivation_info (stream, type);
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gdb_printf (stream, "\n");
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if ((type->num_fields () == 0) && (TYPE_NFN_FIELDS (type) == 0))
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{
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if (type->is_stub ())
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gdb_printf (stream, "%*s<incomplete type>\n",
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level + 4, "");
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else
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gdb_printf (stream, "%*s<no data fields>\n",
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level + 4, "");
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}
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/* Start off with no specific section type, so we can print
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one for the first field we find, and use that section type
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thereafter until we find another type. */
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section_type = s_none;
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/* If there is a base class for this type,
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do not print the field that it occupies. */
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len = type->num_fields ();
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for (i = TYPE_N_BASECLASSES (type); i < len; i++)
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{
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QUIT;
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/* Don't print out virtual function table. */
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if ((startswith (type->field (i).name (), "_vptr"))
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&& is_cplus_marker ((type->field (i).name ())[5]))
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continue;
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/* If this is a pascal object or class we can print the
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various section labels. */
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if (HAVE_CPLUS_STRUCT (type))
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{
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if (TYPE_FIELD_PROTECTED (type, i))
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{
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if (section_type != s_protected)
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{
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section_type = s_protected;
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gdb_printf (stream, "%*sprotected\n",
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level + 2, "");
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}
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}
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else if (TYPE_FIELD_PRIVATE (type, i))
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{
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if (section_type != s_private)
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{
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section_type = s_private;
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gdb_printf (stream, "%*sprivate\n",
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level + 2, "");
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}
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}
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else
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{
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if (section_type != s_public)
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{
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section_type = s_public;
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gdb_printf (stream, "%*spublic\n",
|
|
level + 2, "");
|
|
}
|
|
}
|
|
}
|
|
|
|
print_spaces (level + 4, stream);
|
|
if (field_is_static (&type->field (i)))
|
|
gdb_printf (stream, "static ");
|
|
print_type (type->field (i).type (),
|
|
type->field (i).name (),
|
|
stream, show - 1, level + 4, flags);
|
|
if (!field_is_static (&type->field (i))
|
|
&& TYPE_FIELD_PACKED (type, i))
|
|
{
|
|
/* It is a bitfield. This code does not attempt
|
|
to look at the bitpos and reconstruct filler,
|
|
unnamed fields. This would lead to misleading
|
|
results if the compiler does not put out fields
|
|
for such things (I don't know what it does). */
|
|
gdb_printf (stream, " : %d",
|
|
TYPE_FIELD_BITSIZE (type, i));
|
|
}
|
|
gdb_printf (stream, ";\n");
|
|
}
|
|
|
|
/* If there are both fields and methods, put a space between. */
|
|
len = TYPE_NFN_FIELDS (type);
|
|
if (len && section_type != s_none)
|
|
gdb_printf (stream, "\n");
|
|
|
|
/* Object pascal: print out the methods. */
|
|
|
|
for (i = 0; i < len; i++)
|
|
{
|
|
struct fn_field *f = TYPE_FN_FIELDLIST1 (type, i);
|
|
int j, len2 = TYPE_FN_FIELDLIST_LENGTH (type, i);
|
|
const char *method_name = TYPE_FN_FIELDLIST_NAME (type, i);
|
|
|
|
/* this is GNU C++ specific
|
|
how can we know constructor/destructor?
|
|
It might work for GNU pascal. */
|
|
for (j = 0; j < len2; j++)
|
|
{
|
|
const char *physname = TYPE_FN_FIELD_PHYSNAME (f, j);
|
|
|
|
int is_constructor = (startswith (physname, "__ct__"));
|
|
int is_destructor = (startswith (physname, "__dt__"));
|
|
|
|
QUIT;
|
|
if (TYPE_FN_FIELD_PROTECTED (f, j))
|
|
{
|
|
if (section_type != s_protected)
|
|
{
|
|
section_type = s_protected;
|
|
gdb_printf (stream, "%*sprotected\n",
|
|
level + 2, "");
|
|
}
|
|
}
|
|
else if (TYPE_FN_FIELD_PRIVATE (f, j))
|
|
{
|
|
if (section_type != s_private)
|
|
{
|
|
section_type = s_private;
|
|
gdb_printf (stream, "%*sprivate\n",
|
|
level + 2, "");
|
|
}
|
|
}
|
|
else
|
|
{
|
|
if (section_type != s_public)
|
|
{
|
|
section_type = s_public;
|
|
gdb_printf (stream, "%*spublic\n",
|
|
level + 2, "");
|
|
}
|
|
}
|
|
|
|
print_spaces (level + 4, stream);
|
|
if (TYPE_FN_FIELD_STATIC_P (f, j))
|
|
gdb_printf (stream, "static ");
|
|
if (TYPE_FN_FIELD_TYPE (f, j)->target_type () == 0)
|
|
{
|
|
/* Keep GDB from crashing here. */
|
|
gdb_printf (stream, "<undefined type> %s;\n",
|
|
TYPE_FN_FIELD_PHYSNAME (f, j));
|
|
break;
|
|
}
|
|
|
|
if (is_constructor)
|
|
{
|
|
gdb_printf (stream, "constructor ");
|
|
}
|
|
else if (is_destructor)
|
|
{
|
|
gdb_printf (stream, "destructor ");
|
|
}
|
|
else if (TYPE_FN_FIELD_TYPE (f, j)->target_type () != 0
|
|
&& (TYPE_FN_FIELD_TYPE(f, j)->target_type ()->code ()
|
|
!= TYPE_CODE_VOID))
|
|
{
|
|
gdb_printf (stream, "function ");
|
|
}
|
|
else
|
|
{
|
|
gdb_printf (stream, "procedure ");
|
|
}
|
|
/* This does not work, no idea why !! */
|
|
|
|
type_print_method_args (physname, method_name, stream);
|
|
|
|
if (TYPE_FN_FIELD_TYPE (f, j)->target_type () != 0
|
|
&& (TYPE_FN_FIELD_TYPE(f, j)->target_type ()->code ()
|
|
!= TYPE_CODE_VOID))
|
|
{
|
|
gdb_puts (" : ", stream);
|
|
type_print (TYPE_FN_FIELD_TYPE (f, j)->target_type (),
|
|
"", stream, -1);
|
|
}
|
|
if (TYPE_FN_FIELD_VIRTUAL_P (f, j))
|
|
gdb_printf (stream, "; virtual");
|
|
|
|
gdb_printf (stream, ";\n");
|
|
}
|
|
}
|
|
gdb_printf (stream, "%*send", level, "");
|
|
}
|
|
break;
|
|
|
|
case TYPE_CODE_ENUM:
|
|
if (type->name () != NULL)
|
|
{
|
|
gdb_puts (type->name (), stream);
|
|
if (show > 0)
|
|
gdb_puts (" ", stream);
|
|
}
|
|
/* enum is just defined by
|
|
type enume_name = (enum_member1,enum_member2,...) */
|
|
gdb_printf (stream, " = ");
|
|
stream->wrap_here (4);
|
|
if (show < 0)
|
|
{
|
|
/* If we just printed a tag name, no need to print anything else. */
|
|
if (type->name () == NULL)
|
|
gdb_printf (stream, "(...)");
|
|
}
|
|
else if (show > 0 || type->name () == NULL)
|
|
{
|
|
gdb_printf (stream, "(");
|
|
len = type->num_fields ();
|
|
lastval = 0;
|
|
for (i = 0; i < len; i++)
|
|
{
|
|
QUIT;
|
|
if (i)
|
|
gdb_printf (stream, ", ");
|
|
stream->wrap_here (4);
|
|
gdb_puts (type->field (i).name (), stream);
|
|
if (lastval != type->field (i).loc_enumval ())
|
|
{
|
|
gdb_printf (stream,
|
|
" := %s",
|
|
plongest (type->field (i).loc_enumval ()));
|
|
lastval = type->field (i).loc_enumval ();
|
|
}
|
|
lastval++;
|
|
}
|
|
gdb_printf (stream, ")");
|
|
}
|
|
break;
|
|
|
|
case TYPE_CODE_VOID:
|
|
gdb_printf (stream, "void");
|
|
break;
|
|
|
|
case TYPE_CODE_UNDEF:
|
|
gdb_printf (stream, "record <unknown>");
|
|
break;
|
|
|
|
case TYPE_CODE_ERROR:
|
|
gdb_printf (stream, "%s", TYPE_ERROR_NAME (type));
|
|
break;
|
|
|
|
/* this probably does not work for enums. */
|
|
case TYPE_CODE_RANGE:
|
|
{
|
|
struct type *target = type->target_type ();
|
|
|
|
print_type_scalar (target, type->bounds ()->low.const_val (), stream);
|
|
gdb_puts ("..", stream);
|
|
print_type_scalar (target, type->bounds ()->high.const_val (), stream);
|
|
}
|
|
break;
|
|
|
|
case TYPE_CODE_SET:
|
|
gdb_puts ("set of ", stream);
|
|
print_type (type->index_type (), "", stream,
|
|
show - 1, level, flags);
|
|
break;
|
|
|
|
case TYPE_CODE_STRING:
|
|
gdb_puts ("String", stream);
|
|
break;
|
|
|
|
default:
|
|
/* Handle types not explicitly handled by the other cases,
|
|
such as fundamental types. For these, just print whatever
|
|
the type name is, as recorded in the type itself. If there
|
|
is no type name, then complain. */
|
|
if (type->name () != NULL)
|
|
{
|
|
gdb_puts (type->name (), stream);
|
|
}
|
|
else
|
|
{
|
|
/* At least for dump_symtab, it is important that this not be
|
|
an error (). */
|
|
fprintf_styled (stream, metadata_style.style (),
|
|
"<invalid unnamed pascal type code %d>",
|
|
type->code ());
|
|
}
|
|
break;
|
|
}
|
|
}
|