X-Git-Url: http://git.efficios.com/?a=blobdiff_plain;f=gdb%2Ftypeprint.c;h=3d1204e244c972f87abb3d3fd516dc88810d911a;hb=refs%2Fheads%2Fconcurrent-displaced-stepping-2020-04-01;hp=de96fd5fcd1c8a59c075687f792b8f0517ab8429;hpb=c5a570810022466eaa5e077cd1b8aa00d74706f1;p=deliverable%2Fbinutils-gdb.git diff --git a/gdb/typeprint.c b/gdb/typeprint.c index de96fd5fcd..3d1204e244 100644 --- a/gdb/typeprint.c +++ b/gdb/typeprint.c @@ -1,7 +1,6 @@ /* Language independent support for printing types for GDB, the GNU debugger. - Copyright (C) 1986, 1988-1989, 1991-1995, 1998-2001, 2003, 2006-2012 - Free Software Foundation, Inc. + Copyright (C) 1986-2020 Free Software Foundation, Inc. This file is part of GDB. @@ -32,28 +31,341 @@ #include "language.h" #include "cp-abi.h" #include "typeprint.h" -#include "gdb_string.h" -#include "exceptions.h" #include "valprint.h" -#include +#include +#include "cli/cli-utils.h" +#include "extension.h" +#include "completer.h" +#include "cli/cli-style.h" -extern void _initialize_typeprint (void); +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 */ +}; + + + +/* See typeprint.h. */ + +const int print_offset_data::indentation = 23; + + +/* See typeprint.h. */ + +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); + } +} + +/* See typeprint.h. */ + +void +print_offset_data::update (struct type *type, unsigned int field_idx, + struct ui_file *stream) +{ + if (field_is_static (&type->field (field_idx))) + { + print_spaces_filtered (indentation, stream); + return; + } + + struct type *ftype = check_typedef (TYPE_FIELD_TYPE (type, field_idx)); + if (type->code () == TYPE_CODE_UNION) + { + /* Since union fields don't have the concept of offsets, we just + print their sizes. */ + fprintf_filtered (stream, "/* %4s */", + pulongest (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) + || offset_bitpos % TARGET_CHAR_BIT != 0) + { + /* We're dealing with a bitfield. Print the bit offset. */ + fieldsize_bit = TYPE_FIELD_BITSIZE (type, field_idx); + + unsigned real_bitpos = bitpos + offset_bitpos; + + fprintf_filtered (stream, "/* %4u:%2u", real_bitpos / TARGET_CHAR_BIT, + real_bitpos % TARGET_CHAR_BIT); + } + 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, " | %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): %4s */\n", + pulongest (TYPE_LENGTH (type))); +} + + + +/* 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 = TYPE_TEMPLATE_ARGUMENT (t, i)->linkage_name (); + 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; + } -static void ptype_command (char *, int); + /* 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; -static void whatis_command (char *, int); + *slot = new_tf; -static void whatis_exp (char *, int); + applied = apply_ext_lang_type_printers (flags->global_printers, t); + if (applied != NULL) + { + new_tf->name = obstack_strdup (&flags->global_typedefs->m_storage, + 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); +} + + /* 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 *new, struct ui_file *stream) +typedef_print (struct type *type, struct symbol *newobj, struct ui_file *stream) { - LA_PRINT_TYPEDEF (type, new, stream); + LA_PRINT_TYPEDEF (type, newobj, stream); } /* The default way to print a typedef. */ @@ -73,88 +385,186 @@ default_print_typedef (struct type *type, struct symbol *new_symbol, 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. */ -char * +std::string type_to_string (struct type *type) { - char *s = NULL; - struct ui_file *stb; - struct cleanup *old_chain; - volatile struct gdb_exception except; - - stb = mem_fileopen (); - old_chain = make_cleanup_ui_file_delete (stb); + try + { + string_file stb; - TRY_CATCH (except, RETURN_MASK_ALL) + type_print (type, "", &stb, -1); + return std::move (stb.string ()); + } + catch (const gdb_exception &except) { - type_print (type, "", stb, -1); - s = ui_file_xstrdup (stb, NULL); } - if (except.reason < 0) - s = NULL; - do_cleanups (old_chain); + return {}; +} + +/* See typeprint.h. */ - return s; +void +type_print_unknown_return_type (struct ui_file *stream) +{ + fprintf_styled (stream, metadata_style.style (), + _("")); +} + +/* 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; struct value *val; - struct cleanup *old_chain = NULL; 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_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); + } get_user_print_options (&opts); - if (opts.objectprint) + 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) + if (((type->code () == TYPE_CODE_PTR) || TYPE_IS_REFERENCE (type)) + && (TYPE_TARGET_TYPE (type)->code () == TYPE_CODE_STRUCT)) + real_type = value_rtti_indirect_type (val, &full, &top, &using_enc); + else if (type->code () == TYPE_CODE_STRUCT) real_type = value_rtti_type (val, &full, &top, &using_enc); } + if (flags.print_offsets + && (type->code () == TYPE_CODE_STRUCT + || type->code () == TYPE_CODE_UNION)) + fprintf_filtered (gdb_stdout, "/* offset | size */ "); + printf_filtered ("type = "); + std::unique_ptr table_holder; + std::unique_ptr 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 = "); @@ -164,15 +574,12 @@ whatis_exp (char *exp, int show) 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); } 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. @@ -183,9 +590,9 @@ whatis_command (char *exp, int from_tty) /* TYPENAME is either the name of a type, or an expression. */ static void -ptype_command (char *typename, int from_tty) +ptype_command (const char *type_name, int from_tty) { - whatis_exp (typename, 1); + whatis_exp (type_name, 1); } /* Print integral scalar data VAL, of type TYPE, onto stdio stream STREAM. @@ -206,16 +613,16 @@ 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)) + switch (type->code ()) { case TYPE_CODE_ENUM: - len = TYPE_NFIELDS (type); + len = type->num_fields (); for (i = 0; i < len; i++) { - if (TYPE_FIELD_BITPOS (type, i) == val) + if (TYPE_FIELD_ENUMVAL (type, i) == val) { break; } @@ -261,6 +668,7 @@ print_type_scalar (struct type *type, LONGEST val, struct ui_file *stream) case TYPE_CODE_METHODPTR: case TYPE_CODE_METHOD: case TYPE_CODE_REF: + case TYPE_CODE_RVALUE_REF: case TYPE_CODE_NAMESPACE: error (_("internal error: unhandled type in print_type_scalar")); break; @@ -268,7 +676,6 @@ print_type_scalar (struct type *type, LONGEST val, struct ui_file *stream) default: error (_("Invalid type code in symbol table.")); } - gdb_flush (stream); } /* Dump details of a type specified either directly or indirectly. @@ -276,17 +683,14 @@ print_type_scalar (struct type *type, LONGEST val, struct ui_file *stream) and whatis_command(). */ void -maintenance_print_type (char *typename, int from_tty) +maintenance_print_type (const char *type_name, int from_tty) { struct value *val; struct type *type; - struct cleanup *old_chain; - struct expression *expr; - 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. */ @@ -296,29 +700,166 @@ maintenance_print_type (char *typename, int from_tty) { /* The user expression may name a type indirectly by naming an object of that type. Find that indirectly named type. */ - val = evaluate_type (expr); + val = evaluate_type (expr.get ()); type = value_type (val); } if (type != NULL) { recursive_dump_type (type, 0); } - do_cleanups (old_chain); } } +struct cmd_list_element *setprinttypelist; + +struct cmd_list_element *showprinttypelist; + +static bool print_methods = true; + +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 bool print_typedefs = true; + +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 -_initialize_typeprint (void) +_initialize_typeprint () { - add_com ("ptype", class_vars, ptype_command, _("\ + struct cmd_list_element *c; + + c = 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\ +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.")); - - add_com ("whatis", class_vars, whatis_command, - _("Print data type of expression EXP.\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)")); + 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_show_prefix_cmd ("type", no_class, + _("Generic command for showing type-printing settings."), + &showprinttypelist, "show print type ", 0, + &showprintlist); + add_basic_prefix_cmd ("type", no_class, + _("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); +} + +/* Print status to stream STREAM. */ + +void +val_print_not_allocated (struct ui_file *stream) +{ + fprintf_styled (stream, metadata_style.style (), _("")); +} + +/* Print status to stream STREAM. */ + +void +val_print_not_associated (struct ui_file *stream) +{ + fprintf_styled (stream, metadata_style.style (), _("")); }