/* Language independent support for printing types for GDB, the GNU debugger.
- Copyright 1986, 1988, 1989, 1991, 1992, 1993, 1994, 1995, 1998, 1999,
- 2000 Free Software Foundation, Inc.
+
+ Copyright (C) 1986-2019 Free Software Foundation, Inc.
This file is part of GDB.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
- the Free Software Foundation; either version 2 of the License, or
+ the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
- along with this program; if not, write to the Free Software
- Foundation, Inc., 59 Temple Place - Suite 330,
- Boston, MA 02111-1307, USA. */
+ along with this program. If not, see <http://www.gnu.org/licenses/>. */
#include "defs.h"
-#include "obstack.h"
+#include "gdb_obstack.h"
#include "bfd.h" /* Binary File Description */
#include "symtab.h"
#include "gdbtypes.h"
#include "target.h"
#include "language.h"
#include "cp-abi.h"
+#include "typeprint.h"
+#include "valprint.h"
+#include <ctype.h>
+#include "cli/cli-utils.h"
+#include "extension.h"
+#include "completer.h"
+
+const struct type_print_options type_print_raw_options =
+{
+ 1, /* raw */
+ 1, /* print_methods */
+ 1, /* print_typedefs */
+ 0, /* print_offsets */
+ 0, /* print_nested_type_limit */
+ NULL, /* local_typedefs */
+ NULL, /* global_table */
+ NULL /* global_printers */
+};
+
+/* The default flags for 'ptype' and 'whatis'. */
+
+static struct type_print_options default_ptype_flags =
+{
+ 0, /* raw */
+ 1, /* print_methods */
+ 1, /* print_typedefs */
+ 0, /* print_offsets */
+ 0, /* print_nested_type_limit */
+ NULL, /* local_typedefs */
+ NULL, /* global_table */
+ NULL /* global_printers */
+};
-#include "gdb_string.h"
-#include <errno.h>
-
-/* For real-type printing in whatis_exp() */
-extern int objectprint; /* Controls looking up an object's derived type
- using what we find in its vtables. */
+\f
-extern void _initialize_typeprint (void);
+/* See typeprint.h. */
-static void ptype_command (char *, int);
+const int print_offset_data::indentation = 23;
-static struct type *ptype_eval (struct expression *);
-static void whatis_command (char *, int);
+/* See typeprint.h. */
-static void whatis_exp (char *, int);
+void
+print_offset_data::maybe_print_hole (struct ui_file *stream,
+ unsigned int bitpos,
+ const char *for_what)
+{
+ /* We check for END_BITPOS > 0 because there is a specific
+ scenario when END_BITPOS can be zero and BITPOS can be >
+ 0: when we are dealing with a struct/class with a virtual method.
+ Because of the vtable, the first field of the struct/class will
+ have an offset of sizeof (void *) (the size of the vtable). If
+ we do not check for END_BITPOS > 0 here, GDB will report
+ a hole before the first field, which is not accurate. */
+ if (end_bitpos > 0 && end_bitpos < bitpos)
+ {
+ /* If END_BITPOS is smaller than the current type's
+ bitpos, it means there's a hole in the struct, so we report
+ it here. */
+ unsigned int hole = bitpos - end_bitpos;
+ unsigned int hole_byte = hole / TARGET_CHAR_BIT;
+ unsigned int hole_bit = hole % TARGET_CHAR_BIT;
+
+ if (hole_bit > 0)
+ fprintf_filtered (stream, "/* XXX %2u-bit %s */\n", hole_bit,
+ for_what);
+
+ if (hole_byte > 0)
+ fprintf_filtered (stream, "/* XXX %2u-byte %s */\n", hole_byte,
+ for_what);
+ }
+}
-/* Print a description of a type in the format of a
- typedef for the current language.
- NEW is the new name for a type TYPE. */
+/* See typeprint.h. */
void
-typedef_print (struct type *type, struct symbol *new, struct ui_file *stream)
+print_offset_data::update (struct type *type, unsigned int field_idx,
+ struct ui_file *stream)
{
- CHECK_TYPEDEF (type);
- switch (current_language->la_language)
+ if (field_is_static (&TYPE_FIELD (type, field_idx)))
{
-#ifdef _LANG_c
- case language_c:
- case language_cplus:
- fprintf_filtered (stream, "typedef ");
- type_print (type, "", stream, 0);
- if (TYPE_NAME ((SYMBOL_TYPE (new))) == 0
- || !STREQ (TYPE_NAME ((SYMBOL_TYPE (new))), SYMBOL_NAME (new)))
- fprintf_filtered (stream, " %s", SYMBOL_SOURCE_NAME (new));
- break;
-#endif
-#ifdef _LANG_m2
- case language_m2:
- fprintf_filtered (stream, "TYPE ");
- if (!TYPE_NAME (SYMBOL_TYPE (new)) ||
- !STREQ (TYPE_NAME (SYMBOL_TYPE (new)), SYMBOL_NAME (new)))
- fprintf_filtered (stream, "%s = ", SYMBOL_SOURCE_NAME (new));
- else
- fprintf_filtered (stream, "<builtin> = ");
- type_print (type, "", stream, 0);
- break;
-#endif
-#ifdef _LANG_pascal
- case language_pascal:
- fprintf_filtered (stream, "type ");
- fprintf_filtered (stream, "%s = ", SYMBOL_SOURCE_NAME (new));
- type_print (type, "", stream, 0);
- break;
-#endif
-#ifdef _LANG_chill
- case language_chill:
- fprintf_filtered (stream, "SYNMODE ");
- if (!TYPE_NAME (SYMBOL_TYPE (new)) ||
- !STREQ (TYPE_NAME (SYMBOL_TYPE (new)), SYMBOL_NAME (new)))
- fprintf_filtered (stream, "%s = ", SYMBOL_SOURCE_NAME (new));
+ print_spaces_filtered (indentation, stream);
+ return;
+ }
+
+ struct type *ftype = check_typedef (TYPE_FIELD_TYPE (type, field_idx));
+ if (TYPE_CODE (type) == TYPE_CODE_UNION)
+ {
+ /* Since union fields don't have the concept of offsets, we just
+ print their sizes. */
+ fprintf_filtered (stream, "/* %4u */", TYPE_LENGTH (ftype));
+ return;
+ }
+
+ unsigned int bitpos = TYPE_FIELD_BITPOS (type, field_idx);
+ unsigned int fieldsize_byte = TYPE_LENGTH (ftype);
+ unsigned int fieldsize_bit = fieldsize_byte * TARGET_CHAR_BIT;
+
+ maybe_print_hole (stream, bitpos, "hole");
+
+ if (TYPE_FIELD_PACKED (type, field_idx))
+ {
+ /* We're dealing with a bitfield. Print how many bits are left
+ to be used. */
+ unsigned int bitsize = TYPE_FIELD_BITSIZE (type, field_idx);
+ /* The bitpos relative to the beginning of our container
+ field. */
+ unsigned int relative_bitpos;
+
+ /* The following was copied from
+ value.c:value_primitive_field. */
+ if ((bitpos % fieldsize_bit) + bitsize <= fieldsize_bit)
+ relative_bitpos = bitpos % fieldsize_bit;
else
- fprintf_filtered (stream, "<builtin> = ");
- type_print (type, "", stream, 0);
- break;
-#endif
- default:
- error ("Language not supported.");
+ relative_bitpos = bitpos % TARGET_CHAR_BIT;
+
+ /* This is the exact offset (in bits) of this bitfield. */
+ unsigned int bit_offset
+ = (bitpos - relative_bitpos) + offset_bitpos;
+
+ /* The position of the field, relative to the beginning of the
+ struct, and how many bits are left to be used in this
+ container. */
+ fprintf_filtered (stream, "/* %4u:%2u", bit_offset / TARGET_CHAR_BIT,
+ fieldsize_bit - (relative_bitpos + bitsize));
+ fieldsize_bit = bitsize;
+ }
+ else
+ {
+ /* The position of the field, relative to the beginning of the
+ struct. */
+ fprintf_filtered (stream, "/* %4u",
+ (bitpos + offset_bitpos) / TARGET_CHAR_BIT);
+
+ fprintf_filtered (stream, " ");
}
- fprintf_filtered (stream, ";\n");
+
+ fprintf_filtered (stream, " | %4u */", fieldsize_byte);
+
+ end_bitpos = bitpos + fieldsize_bit;
+}
+
+/* See typeprint.h. */
+
+void
+print_offset_data::finish (struct type *type, int level,
+ struct ui_file *stream)
+{
+ unsigned int bitpos = TYPE_LENGTH (type) * TARGET_CHAR_BIT;
+ maybe_print_hole (stream, bitpos, "padding");
+
+ fputs_filtered ("\n", stream);
+ print_spaces_filtered (level + 4 + print_offset_data::indentation, stream);
+ fprintf_filtered (stream, "/* total size (bytes): %4u */\n",
+ TYPE_LENGTH (type));
+}
+
+\f
+
+/* A hash function for a typedef_field. */
+
+static hashval_t
+hash_typedef_field (const void *p)
+{
+ const struct decl_field *tf = (const struct decl_field *) p;
+ struct type *t = check_typedef (tf->type);
+
+ return htab_hash_string (TYPE_SAFE_NAME (t));
+}
+
+/* An equality function for a typedef field. */
+
+static int
+eq_typedef_field (const void *a, const void *b)
+{
+ const struct decl_field *tfa = (const struct decl_field *) a;
+ const struct decl_field *tfb = (const struct decl_field *) b;
+
+ return types_equal (tfa->type, tfb->type);
+}
+
+/* See typeprint.h. */
+
+void
+typedef_hash_table::recursively_update (struct type *t)
+{
+ int i;
+
+ for (i = 0; i < TYPE_TYPEDEF_FIELD_COUNT (t); ++i)
+ {
+ struct decl_field *tdef = &TYPE_TYPEDEF_FIELD (t, i);
+ void **slot;
+
+ slot = htab_find_slot (m_table, tdef, INSERT);
+ /* Only add a given typedef name once. Really this shouldn't
+ happen; but it is safe enough to do the updates breadth-first
+ and thus use the most specific typedef. */
+ if (*slot == NULL)
+ *slot = tdef;
+ }
+
+ /* Recurse into superclasses. */
+ for (i = 0; i < TYPE_N_BASECLASSES (t); ++i)
+ recursively_update (TYPE_BASECLASS (t, i));
+}
+
+/* See typeprint.h. */
+
+void
+typedef_hash_table::add_template_parameters (struct type *t)
+{
+ int i;
+
+ for (i = 0; i < TYPE_N_TEMPLATE_ARGUMENTS (t); ++i)
+ {
+ struct decl_field *tf;
+ void **slot;
+
+ /* We only want type-valued template parameters in the hash. */
+ if (SYMBOL_CLASS (TYPE_TEMPLATE_ARGUMENT (t, i)) != LOC_TYPEDEF)
+ continue;
+
+ tf = XOBNEW (&m_storage, struct decl_field);
+ tf->name = SYMBOL_LINKAGE_NAME (TYPE_TEMPLATE_ARGUMENT (t, i));
+ tf->type = SYMBOL_TYPE (TYPE_TEMPLATE_ARGUMENT (t, i));
+
+ slot = htab_find_slot (m_table, tf, INSERT);
+ if (*slot == NULL)
+ *slot = tf;
+ }
+}
+
+/* See typeprint.h. */
+
+typedef_hash_table::typedef_hash_table ()
+{
+ m_table = htab_create_alloc (10, hash_typedef_field, eq_typedef_field,
+ NULL, xcalloc, xfree);
+}
+
+/* Free a typedef field table. */
+
+typedef_hash_table::~typedef_hash_table ()
+{
+ htab_delete (m_table);
+}
+
+/* Helper function for typedef_hash_table::copy. */
+
+static int
+copy_typedef_hash_element (void **slot, void *nt)
+{
+ htab_t new_table = (htab_t) nt;
+ void **new_slot;
+
+ new_slot = htab_find_slot (new_table, *slot, INSERT);
+ if (*new_slot == NULL)
+ *new_slot = *slot;
+
+ return 1;
+}
+
+/* See typeprint.h. */
+
+typedef_hash_table::typedef_hash_table (const typedef_hash_table &table)
+{
+ m_table = htab_create_alloc (10, hash_typedef_field, eq_typedef_field,
+ NULL, xcalloc, xfree);
+ htab_traverse_noresize (table.m_table, copy_typedef_hash_element,
+ m_table);
+}
+
+/* Look up the type T in the global typedef hash. If it is found,
+ return the typedef name. If it is not found, apply the
+ type-printers, if any, given by start_script_type_printers and return the
+ result. A NULL return means that the name was not found. */
+
+const char *
+typedef_hash_table::find_global_typedef (const struct type_print_options *flags,
+ struct type *t)
+{
+ char *applied;
+ void **slot;
+ struct decl_field tf, *new_tf;
+
+ if (flags->global_typedefs == NULL)
+ return NULL;
+
+ tf.name = NULL;
+ tf.type = t;
+
+ slot = htab_find_slot (flags->global_typedefs->m_table, &tf, INSERT);
+ if (*slot != NULL)
+ {
+ new_tf = (struct decl_field *) *slot;
+ return new_tf->name;
+ }
+
+ /* Put an entry into the hash table now, in case
+ apply_ext_lang_type_printers recurses. */
+ new_tf = XOBNEW (&flags->global_typedefs->m_storage, struct decl_field);
+ new_tf->name = NULL;
+ new_tf->type = t;
+
+ *slot = new_tf;
+
+ applied = apply_ext_lang_type_printers (flags->global_printers, t);
+
+ if (applied != NULL)
+ {
+ new_tf->name
+ = (const char *) obstack_copy0 (&flags->global_typedefs->m_storage,
+ applied, strlen (applied));
+ xfree (applied);
+ }
+
+ return new_tf->name;
+}
+
+/* See typeprint.h. */
+
+const char *
+typedef_hash_table::find_typedef (const struct type_print_options *flags,
+ struct type *t)
+{
+ if (flags->local_typedefs != NULL)
+ {
+ struct decl_field tf, *found;
+
+ tf.name = NULL;
+ tf.type = t;
+ found = (struct decl_field *) htab_find (flags->local_typedefs->m_table,
+ &tf);
+
+ if (found != NULL)
+ return found->name;
+ }
+
+ return find_global_typedef (flags, t);
+}
+
+\f
+
+/* Print a description of a type in the format of a
+ typedef for the current language.
+ NEW is the new name for a type TYPE. */
+
+void
+typedef_print (struct type *type, struct symbol *newobj, struct ui_file *stream)
+{
+ LA_PRINT_TYPEDEF (type, newobj, stream);
+}
+
+/* The default way to print a typedef. */
+
+void
+default_print_typedef (struct type *type, struct symbol *new_symbol,
+ struct ui_file *stream)
+{
+ error (_("Language not supported."));
}
/* Print a description of a type TYPE in the form of a declaration of a
If SHOW is negative, we never show the details of elements' types. */
void
-type_print (struct type *type, char *varstring, struct ui_file *stream,
+type_print (struct type *type, const char *varstring, struct ui_file *stream,
int show)
{
- LA_PRINT_TYPE (type, varstring, stream, show, 0);
+ LA_PRINT_TYPE (type, varstring, stream, show, 0, &default_ptype_flags);
+}
+
+/* Print TYPE to a string, returning it. The caller is responsible for
+ freeing the string. */
+
+std::string
+type_to_string (struct type *type)
+{
+ TRY
+ {
+ string_file stb;
+
+ type_print (type, "", &stb, -1);
+ return std::move (stb.string ());
+ }
+ CATCH (except, RETURN_MASK_ALL)
+ {
+ }
+ END_CATCH
+
+ return {};
+}
+
+/* See typeprint.h. */
+
+void
+type_print_unknown_return_type (struct ui_file *stream)
+{
+ fprintf_filtered (stream, _("<unknown return type>"));
+}
+
+/* See typeprint.h. */
+
+void
+error_unknown_type (const char *sym_print_name)
+{
+ error (_("'%s' has unknown type; cast it to its declared type"),
+ sym_print_name);
}
/* Print type of EXP, or last thing in value history if EXP == NULL.
show is passed to type_print. */
static void
-whatis_exp (char *exp, int show)
+whatis_exp (const char *exp, int show)
{
- struct expression *expr;
- register value_ptr val;
- register struct cleanup *old_chain = NULL;
+ struct value *val;
struct type *real_type = NULL;
struct type *type;
int full = 0;
- int top = -1;
+ LONGEST top = -1;
int using_enc = 0;
+ struct value_print_options opts;
+ struct type_print_options flags = default_ptype_flags;
if (exp)
{
- expr = parse_expression (exp);
- old_chain = make_cleanup (free_current_contents, &expr);
- val = evaluate_type (expr);
+ if (*exp == '/')
+ {
+ int seen_one = 0;
+
+ for (++exp; *exp && !isspace (*exp); ++exp)
+ {
+ switch (*exp)
+ {
+ case 'r':
+ flags.raw = 1;
+ break;
+ case 'm':
+ flags.print_methods = 0;
+ break;
+ case 'M':
+ flags.print_methods = 1;
+ break;
+ case 't':
+ flags.print_typedefs = 0;
+ break;
+ case 'T':
+ flags.print_typedefs = 1;
+ break;
+ case 'o':
+ {
+ /* Filter out languages which don't implement the
+ feature. */
+ if (show > 0
+ && (current_language->la_language == language_c
+ || current_language->la_language == language_cplus
+ || current_language->la_language == language_rust))
+ {
+ flags.print_offsets = 1;
+ flags.print_typedefs = 0;
+ flags.print_methods = 0;
+ }
+ break;
+ }
+ default:
+ error (_("unrecognized flag '%c'"), *exp);
+ }
+ seen_one = 1;
+ }
+
+ if (!*exp && !seen_one)
+ error (_("flag expected"));
+ if (!isspace (*exp))
+ error (_("expected space after format"));
+ exp = skip_spaces (exp);
+ }
+
+ expression_up expr = parse_expression (exp);
+
+ /* The behavior of "whatis" depends on whether the user
+ expression names a type directly, or a language expression
+ (including variable names). If the former, then "whatis"
+ strips one level of typedefs, only. If an expression,
+ "whatis" prints the type of the expression without stripping
+ any typedef level. "ptype" always strips all levels of
+ typedefs. */
+ if (show == -1 && expr->elts[0].opcode == OP_TYPE)
+ {
+ /* The user expression names a type directly. */
+ type = expr->elts[1].type;
+
+ /* If this is a typedef, then find its immediate target.
+ Use check_typedef to resolve stubs, but ignore its result
+ because we do not want to dig past all typedefs. */
+ check_typedef (type);
+ if (TYPE_CODE (type) == TYPE_CODE_TYPEDEF)
+ type = TYPE_TARGET_TYPE (type);
+
+ /* If the expression is actually a type, then there's no
+ value to fetch the dynamic type from. */
+ val = NULL;
+ }
+ else
+ {
+ /* The user expression names a type indirectly by naming an
+ object or expression of that type. Find that
+ indirectly-named type. */
+ val = evaluate_type (expr.get ());
+ type = value_type (val);
+ }
}
else
- val = access_value_history (0);
-
- type = VALUE_TYPE (val);
+ {
+ val = access_value_history (0);
+ type = value_type (val);
+ }
- if (objectprint)
+ get_user_print_options (&opts);
+ if (val != NULL && opts.objectprint)
{
- if (((TYPE_CODE (type) == TYPE_CODE_PTR) ||
- (TYPE_CODE (type) == TYPE_CODE_REF))
- &&
- (TYPE_CODE (TYPE_TARGET_TYPE (type)) == TYPE_CODE_CLASS))
- {
- real_type = value_rtti_target_type (val, &full, &top, &using_enc);
- if (real_type)
- {
- if (TYPE_CODE (type) == TYPE_CODE_PTR)
- real_type = lookup_pointer_type (real_type);
- else
- real_type = lookup_reference_type (real_type);
- }
- }
- else if (TYPE_CODE (type) == TYPE_CODE_CLASS)
- real_type = value_rtti_type (val, &full, &top, &using_enc);
+ if (((TYPE_CODE (type) == TYPE_CODE_PTR) || TYPE_IS_REFERENCE (type))
+ && (TYPE_CODE (TYPE_TARGET_TYPE (type)) == TYPE_CODE_STRUCT))
+ real_type = value_rtti_indirect_type (val, &full, &top, &using_enc);
+ else if (TYPE_CODE (type) == TYPE_CODE_STRUCT)
+ real_type = value_rtti_type (val, &full, &top, &using_enc);
}
+ if (flags.print_offsets
+ && (TYPE_CODE (type) == TYPE_CODE_STRUCT
+ || TYPE_CODE (type) == TYPE_CODE_UNION))
+ fprintf_filtered (gdb_stdout, "/* offset | size */ ");
+
printf_filtered ("type = ");
+ std::unique_ptr<typedef_hash_table> table_holder;
+ std::unique_ptr<ext_lang_type_printers> printer_holder;
+ if (!flags.raw)
+ {
+ table_holder.reset (new typedef_hash_table);
+ flags.global_typedefs = table_holder.get ();
+
+ printer_holder.reset (new ext_lang_type_printers);
+ flags.global_printers = printer_holder.get ();
+ }
+
if (real_type)
{
printf_filtered ("/* real type = ");
printf_filtered (" */\n");
}
- type_print (type, "", gdb_stdout, show);
+ LA_PRINT_TYPE (type, "", gdb_stdout, show, 0, &flags);
printf_filtered ("\n");
-
- if (exp)
- do_cleanups (old_chain);
}
-/* ARGSUSED */
static void
-whatis_command (char *exp, int from_tty)
+whatis_command (const char *exp, int from_tty)
{
/* Most of the time users do not want to see all the fields
in a structure. If they do they can use the "ptype" command.
whatis_exp (exp, -1);
}
-/* Simple subroutine for ptype_command. */
-
-static struct type *
-ptype_eval (struct expression *exp)
-{
- if (exp->elts[0].opcode == OP_TYPE)
- {
- return (exp->elts[1].type);
- }
- else
- {
- return (NULL);
- }
-}
-
/* TYPENAME is either the name of a type, or an expression. */
-/* ARGSUSED */
static void
-ptype_command (char *typename, int from_tty)
+ptype_command (const char *type_name, int from_tty)
{
- register struct type *type;
- struct expression *expr;
- register struct cleanup *old_chain;
-
- if (typename == NULL)
- {
- /* Print type of last thing in value history. */
- whatis_exp (typename, 1);
- }
- else
- {
- expr = parse_expression (typename);
- old_chain = make_cleanup (free_current_contents, &expr);
- type = ptype_eval (expr);
- if (type != NULL)
- {
- /* User did "ptype <typename>" */
- printf_filtered ("type = ");
- type_print (type, "", gdb_stdout, 1);
- printf_filtered ("\n");
- do_cleanups (old_chain);
- }
- else
- {
- /* User did "ptype <symbolname>" */
- do_cleanups (old_chain);
- whatis_exp (typename, 1);
- }
- }
+ whatis_exp (type_name, 1);
}
/* Print integral scalar data VAL, of type TYPE, onto stdio stream STREAM.
currently use it, and it wasn't clear if it really belonged somewhere
else (like printcmd.c). There are a lot of other gdb routines that do
something similar, but they are generally concerned with printing values
- that come from the inferior in target byte order and target size. */
+ that come from the inferior in target byte order and target size. */
void
print_type_scalar (struct type *type, LONGEST val, struct ui_file *stream)
unsigned int i;
unsigned len;
- CHECK_TYPEDEF (type);
+ type = check_typedef (type);
switch (TYPE_CODE (type))
{
len = TYPE_NFIELDS (type);
for (i = 0; i < len; i++)
{
- if (TYPE_FIELD_BITPOS (type, i) == val)
+ if (TYPE_FIELD_ENUMVAL (type, i) == val)
{
break;
}
break;
case TYPE_CODE_CHAR:
- LA_PRINT_CHAR ((unsigned char) val, stream);
+ LA_PRINT_CHAR ((unsigned char) val, type, stream);
break;
case TYPE_CODE_BOOL:
case TYPE_CODE_SET:
case TYPE_CODE_STRING:
case TYPE_CODE_ERROR:
- case TYPE_CODE_MEMBER:
+ case TYPE_CODE_MEMBERPTR:
+ case TYPE_CODE_METHODPTR:
case TYPE_CODE_METHOD:
case TYPE_CODE_REF:
- error ("internal error: unhandled type in print_type_scalar");
+ case TYPE_CODE_RVALUE_REF:
+ case TYPE_CODE_NAMESPACE:
+ error (_("internal error: unhandled type in print_type_scalar"));
break;
default:
- error ("Invalid type code in symbol table.");
+ error (_("Invalid type code in symbol table."));
}
gdb_flush (stream);
}
/* Dump details of a type specified either directly or indirectly.
Uses the same sort of type lookup mechanism as ptype_command()
- and whatis_command(). */
+ and whatis_command(). */
void
-maintenance_print_type (char *typename, int from_tty)
+maintenance_print_type (const char *type_name, int from_tty)
{
- register value_ptr val;
- register struct type *type;
- register struct cleanup *old_chain;
- struct expression *expr;
+ struct value *val;
+ struct type *type;
- if (typename != NULL)
+ if (type_name != NULL)
{
- expr = parse_expression (typename);
- old_chain = make_cleanup (free_current_contents, &expr);
+ expression_up expr = parse_expression (type_name);
if (expr->elts[0].opcode == OP_TYPE)
{
- /* The user expression names a type directly, just use that type. */
+ /* The user expression names a type directly, just use that type. */
type = expr->elts[1].type;
}
else
{
/* The user expression may name a type indirectly by naming an
- object of that type. Find that indirectly named type. */
- val = evaluate_type (expr);
- type = VALUE_TYPE (val);
+ object of that type. Find that indirectly named type. */
+ val = evaluate_type (expr.get ());
+ type = value_type (val);
}
if (type != NULL)
{
recursive_dump_type (type, 0);
}
- do_cleanups (old_chain);
}
}
\f
+struct cmd_list_element *setprinttypelist;
+
+struct cmd_list_element *showprinttypelist;
+
+static void
+set_print_type (const char *arg, int from_tty)
+{
+ printf_unfiltered (
+ "\"set print type\" must be followed by the name of a subcommand.\n");
+ help_list (setprintlist, "set print type ", all_commands, gdb_stdout);
+}
+
+static void
+show_print_type (const char *args, int from_tty)
+{
+ cmd_show_list (showprinttypelist, from_tty, "");
+}
+
+static int print_methods = 1;
+
+static void
+set_print_type_methods (const char *args,
+ int from_tty, struct cmd_list_element *c)
+{
+ default_ptype_flags.print_methods = print_methods;
+}
+
+static void
+show_print_type_methods (struct ui_file *file, int from_tty,
+ struct cmd_list_element *c, const char *value)
+{
+ fprintf_filtered (file, _("Printing of methods defined in a class in %s\n"),
+ value);
+}
+
+static int print_typedefs = 1;
+
+static void
+set_print_type_typedefs (const char *args,
+ int from_tty, struct cmd_list_element *c)
+{
+ default_ptype_flags.print_typedefs = print_typedefs;
+}
+
+static void
+show_print_type_typedefs (struct ui_file *file, int from_tty,
+ struct cmd_list_element *c, const char *value)
+{
+ fprintf_filtered (file, _("Printing of typedefs defined in a class in %s\n"),
+ value);
+}
+
+/* Limit on the number of nested type definitions to print or -1 to print
+ all nested type definitions in a class. By default, we do not print
+ nested definitions. */
+
+static int print_nested_type_limit = 0;
+
+/* Set how many nested type definitions should be printed by the type
+ printer. */
+
+static void
+set_print_type_nested_types (const char *args, int from_tty,
+ struct cmd_list_element *c)
+{
+ default_ptype_flags.print_nested_type_limit = print_nested_type_limit;
+}
+
+/* Show how many nested type definitions the type printer will print. */
+
+static void
+show_print_type_nested_types (struct ui_file *file, int from_tty,
+ struct cmd_list_element *c, const char *value)
+{
+ if (*value == '0')
+ {
+ fprintf_filtered (file,
+ _("Will not print nested types defined in a class\n"));
+ }
+ else
+ {
+ fprintf_filtered (file,
+ _("Will print %s nested types defined in a class\n"),
+ value);
+ }
+}
+
void
_initialize_typeprint (void)
{
+ struct cmd_list_element *c;
+
+ c = add_com ("ptype", class_vars, ptype_command, _("\
+Print definition of type TYPE.\n\
+Usage: ptype[/FLAGS] TYPE | EXPRESSION\n\
+Argument may be any type (for example a type name defined by typedef,\n\
+or \"struct STRUCT-TAG\" or \"class CLASS-NAME\" or \"union UNION-TAG\"\n\
+or \"enum ENUM-TAG\") or an expression.\n\
+The selected stack frame's lexical context is used to look up the name.\n\
+Contrary to \"whatis\", \"ptype\" always unrolls any typedefs.\n\
+\n\
+Available FLAGS are:\n\
+ /r print in \"raw\" form; do not substitute typedefs\n\
+ /m do not print methods defined in a class\n\
+ /M print methods defined in a class\n\
+ /t do not print typedefs defined in a class\n\
+ /T print typedefs defined in a class\n\
+ /o print offsets and sizes of fields in a struct (like pahole)\n"));
+ set_cmd_completer (c, expression_completer);
+
+ c = add_com ("whatis", class_vars, whatis_command,
+ _("Print data type of expression EXP.\n\
+Only one level of typedefs is unrolled. See also \"ptype\"."));
+ set_cmd_completer (c, expression_completer);
+
+ add_prefix_cmd ("type", no_class, show_print_type,
+ _("Generic command for showing type-printing settings."),
+ &showprinttypelist, "show print type ", 0, &showprintlist);
+ add_prefix_cmd ("type", no_class, set_print_type,
+ _("Generic command for setting how types print."),
+ &setprinttypelist, "set print type ", 0, &setprintlist);
+
+ add_setshow_boolean_cmd ("methods", no_class, &print_methods,
+ _("\
+Set printing of methods defined in classes."), _("\
+Show printing of methods defined in classes."), NULL,
+ set_print_type_methods,
+ show_print_type_methods,
+ &setprinttypelist, &showprinttypelist);
+ add_setshow_boolean_cmd ("typedefs", no_class, &print_typedefs,
+ _("\
+Set printing of typedefs defined in classes."), _("\
+Show printing of typedefs defined in classes."), NULL,
+ set_print_type_typedefs,
+ show_print_type_typedefs,
+ &setprinttypelist, &showprinttypelist);
+
+ add_setshow_zuinteger_unlimited_cmd ("nested-type-limit", no_class,
+ &print_nested_type_limit,
+ _("\
+Set the number of recursive nested type definitions to print \
+(\"unlimited\" or -1 to show all)."), _("\
+Show the number of recursive nested type definitions to print."), NULL,
+ set_print_type_nested_types,
+ show_print_type_nested_types,
+ &setprinttypelist, &showprinttypelist);
+}
- add_com ("ptype", class_vars, ptype_command,
- "Print definition of type TYPE.\n\
-Argument may be a type name defined by typedef, or \"struct STRUCT-TAG\"\n\
-or \"class CLASS-NAME\" or \"union UNION-TAG\" or \"enum ENUM-TAG\".\n\
-The selected stack frame's lexical context is used to look up the name.");
+/* Print <not allocated> status to stream STREAM. */
- add_com ("whatis", class_vars, whatis_command,
- "Print data type of expression EXP.");
+void
+val_print_not_allocated (struct ui_file *stream)
+{
+ fprintf_filtered (stream, _("<not allocated>"));
+}
+/* Print <not associated> status to stream STREAM. */
+
+void
+val_print_not_associated (struct ui_file *stream)
+{
+ fprintf_filtered (stream, _("<not associated>"));
}
projects / thirdparty / binutils-gdb.git / blobdiff