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e25dae2ce1
binutils-gdb/gdb/language.c
Pedro Alves d7e747318f Eliminate make_cleanup_ui_file_delete / make ui_file a class hierarchy 
This patch starts from the desire to eliminate
make_cleanup_ui_file_delete, but then goes beyond.  It makes ui_file &
friends a real C++ class hierarchy, and switches temporary
ui_file-like objects to stack-based allocation.

- mem_fileopen -> string_file

mem_fileopen is replaced with a new string_file class that is treated
as a value class created on the stack.  This alone eliminates most
make_cleanup_ui_file_delete calls, and, simplifies code a whole lot
(diffstat shows around 1k loc dropped.)

string_file's internal buffer is a std::string, thus the "string" in
the name.  This simplifies the implementation much, compared to
mem_fileopen, which managed growing its internal buffer manually.

- ui_file_as_string, ui_file_strdup, ui_file_obsavestring all gone

The new string_file class has a string() method that provides direct
writable access to the internal std::string buffer.  This replaced
ui_file_as_string, which forced a copy of the same data the stream had
inside.  With direct access via a writable reference, we can instead
move the string out of the string_stream, avoiding deep string
copying.

Related, ui_file_xstrdup calls are replaced with xstrdup'ping the
stream's string, and ui_file_obsavestring is replaced by
obstack_copy0.

With all those out of the way, getting rid of the weird ui_file_put
mechanism was possible.

- New ui_file::printf, ui_file::puts, etc. methods

These simplify / clarify client code.  I considered splitting
client-code changes, like these, e.g.:

  -  stb = mem_fileopen ();
  -  fprintf_unfiltered (stb, "%s%s%s",
  -		      _("The valid values are:\n"),
  -		      regdesc,
  -		      _("The default is \"std\"."));
  +  string_file stb;
  +  stb.printf ("%s%s%s",
  +	      _("The valid values are:\n"),
  +	      regdesc,
  +	      _("The default is \"std\"."));

In two steps, with the first step leaving fprintf_unfiltered (etc.)
calls in place, and only afterwards do a pass to change all those to
call stb.printf etc..  I didn't do that split, because (when I tried),
it turned out to be pointless make-work: the first pass would have to
touch the fprintf_unfiltered line anyway, to replace "stb" with
"&stb".

- gdb_fopen replaced with stack-based objects

This avoids the need for cleanups or unique_ptr's.  I.e., this:

      struct ui_file *file = gdb_fopen (filename, "w");
      if (filename == NULL)
 	perror_with_name (filename);
      cleanups = make_cleanup_ui_file_delete (file);
      // use file.
      do_cleanups (cleanups);

is replaced with this:

      stdio_file file;
      if (!file.open (filename, "w"))
 	perror_with_name (filename);
      // use file.

- odd contorsions in null_file_write / null_file_fputs around when to
  call to_fputs / to_write eliminated.

- Global null_stream object

A few places that were allocating a ui_file in order to print to
"nowhere" are adjusted to instead refer to a new 'null_stream' global
stream.

- TUI's tui_sfileopen eliminated.  TUI's ui_file much simplified

The TUI's ui_file was serving a dual purpose.  It supported being used
as string buffer, and supported being backed by a stdio FILE.  The
string buffer part is gone, replaced by using of string_file.  The
'FILE *' support is now much simplified, by making the TUI's ui_file
inherit from stdio_file.

gdb/ChangeLog:
2017-02-02  Pedro Alves  <palves@redhat.com>

	* ada-lang.c (type_as_string): Use string_file.
	* ada-valprint.c (ada_print_floating): Use string_file.
	* ada-varobj.c (ada_varobj_scalar_image)
	(ada_varobj_get_value_image): Use string_file.
	* aix-thread.c (aix_thread_extra_thread_info): Use string_file.
	* arm-tdep.c (_initialize_arm_tdep): Use string_printf.
	* breakpoint.c (update_inserted_breakpoint_locations)
	(insert_breakpoint_locations, reattach_breakpoints)
	(print_breakpoint_location, print_one_detail_ranged_breakpoint)
	(print_it_watchpoint): Use string_file.
	(save_breakpoints): Use stdio_file.
	* c-exp.y (oper): Use string_file.
	* cli/cli-logging.c (set_logging_redirect): Use ui_file_up and
	tee_file.
	(pop_output_files): Use delete.
	(handle_redirections): Use stdio_file and tee_file.
	* cli/cli-setshow.c (do_show_command): Use string_file.
	* compile/compile-c-support.c (c_compute_program): Use
	string_file.
	* compile/compile-c-symbols.c (generate_vla_size): Take a
	'string_file &' instead of a 'ui_file *'.
	(generate_c_for_for_one_variable): Take a 'string_file &' instead
	of a 'ui_file *'.  Use string_file.
	(generate_c_for_variable_locations): Take a 'string_file &'
	instead of a 'ui_file *'.
	* compile/compile-internal.h (generate_c_for_for_one_variable):
	Take a 'string_file &' instead of a 'ui_file *'.
	* compile/compile-loc2c.c (push, pushf, unary, binary)
	(print_label, pushf_register_address, pushf_register)
	(do_compile_dwarf_expr_to_c): Take a 'string_file &' instead of a
	'ui_file *'.  Adjust.
	* compile/compile.c (compile_to_object): Use string_file.
	* compile/compile.h (compile_dwarf_expr_to_c)
	(compile_dwarf_bounds_to_c): Take a 'string_file &' instead of a
	'ui_file *'.
	* cp-support.c (inspect_type): Use string_file and obstack_copy0.
	(replace_typedefs_qualified_name): Use string_file and
	obstack_copy0.
	* disasm.c (gdb_pretty_print_insn): Use string_file.
	(gdb_disassembly): Adjust reference the null_stream global.
	(do_ui_file_delete): Delete.
	(gdb_insn_length): Use null_stream.
	* dummy-frame.c (maintenance_print_dummy_frames): Use stdio_file.
	* dwarf2loc.c (dwarf2_compile_property_to_c)
	(locexpr_generate_c_location, loclist_generate_c_location): Take a
	'string_file &' instead of a 'ui_file *'.
	* dwarf2loc.h (dwarf2_compile_property_to_c): Likewise.
	* dwarf2read.c (do_ui_file_peek_last): Delete.
	(dwarf2_compute_name): Use string_file.
	* event-top.c (gdb_setup_readline): Use stdio_file.
	* gdbarch.sh (verify_gdbarch): Use string_file.
	* gdbtypes.c (safe_parse_type): Use null_stream.
	* guile/scm-breakpoint.c (gdbscm_breakpoint_commands): Use
	string_file.
	* guile/scm-disasm.c (gdbscm_print_insn_from_port): Take a
	'string_file *' instead of a 'ui_file *'.
	(gdbscm_arch_disassemble): Use string_file.
	* guile/scm-frame.c (frscm_print_frame_smob): Use string_file.
	* guile/scm-ports.c (class ioscm_file_port): Now a class that
	inherits from ui_file.
	(ioscm_file_port_delete, ioscm_file_port_rewind)
	(ioscm_file_port_put): Delete.
	(ioscm_file_port_write): Rename to ...
	(ioscm_file_port::write): ... this.  Remove file_port_magic
	checks.
	(ioscm_file_port_new): Delete.
	(ioscm_with_output_to_port_worker): Use ioscm_file_port and
	ui_file_up.
	* guile/scm-type.c (tyscm_type_name): Use string_file.
	* guile/scm-value.c (vlscm_print_value_smob, gdbscm_value_print):
	Use string_file.
	* infcmd.c (print_return_value_1): Use string_file.
	* infrun.c (print_target_wait_results): Use string_file.
	* language.c (add_language): Use string_file.
	* location.c (explicit_to_string_internal): Use string_file.
	* main.c (captured_main_1): Use null_file.
	* maint.c (maintenance_print_architecture): Use stdio_file.
	* mi/mi-cmd-stack.c (list_arg_or_local): Use string_file.
	* mi/mi-common.h (struct mi_interp) <out, err, log, targ,
	event_channel>: Change type to mi_console_file pointer.
	* mi/mi-console.c (mi_console_file_fputs, mi_console_file_flush)
	(mi_console_file_delete): Delete.
	(struct mi_console_file): Delete.
	(mi_console_file_magic): Delete.
	(mi_console_file_new): Delete.
	(mi_console_file::mi_console_file): New.
	(mi_console_file_delete): Delete.
	(mi_console_file_fputs): Delete.
	(mi_console_file::write): New.
	(mi_console_raw_packet): Delete.
	(mi_console_file::flush): New.
	(mi_console_file_flush): Delete.
	(mi_console_set_raw): Rename to ...
	(mi_console_file::set_raw): ... this.
	* mi/mi-console.h (class mi_console_file): New class.
	(mi_console_file_new, mi_console_set_raw): Delete.
	* mi/mi-interp.c (mi_interpreter_init): Use mi_console_file.
	(mi_set_logging): Use delete and tee_file.  Adjust.
	* mi/mi-main.c (output_register): Use string_file.
	(mi_cmd_data_evaluate_expression): Use string_file.
	(mi_cmd_data_read_memory): Use string_file.
	(mi_cmd_execute, print_variable_or_computed): Use string_file.
	* mi/mi-out.c (mi_ui_out::main_stream): New.
	(mi_ui_out::rewind): Use main_stream and
	string_file.
	(mi_ui_out::put): Use main_stream and string_file.
	(mi_ui_out::mi_ui_out): Remove 'stream' parameter.
	Allocate a 'string_file' instead.
	(mi_out_new): Don't allocate a mem_fileopen stream here.
	* mi/mi-out.h (mi_ui_out::mi_ui_out): Remove 'stream' parameter.
	(mi_ui_out::main_stream): Declare method.
	* printcmd.c (eval_command): Use string_file.
	* psymtab.c (maintenance_print_psymbols): Use stdio_file.
	* python/py-arch.c (archpy_disassemble): Use string_file.
	* python/py-breakpoint.c (bppy_get_commands): Use string_file.
	* python/py-frame.c (frapy_str): Use string_file.
	* python/py-framefilter.c (py_print_type, py_print_single_arg):
	Use string_file.
	* python/py-type.c (typy_str): Use string_file.
	* python/py-unwind.c (unwind_infopy_str): Use string_file.
	* python/py-value.c (valpy_str): Use string_file.
	* record-btrace.c (btrace_insn_history): Use string_file.
	* regcache.c (regcache_print): Use stdio_file.
	* reggroups.c (maintenance_print_reggroups): Use stdio_file.
	* remote.c (escape_buffer): Use string_file.
	* rust-lang.c (rust_get_disr_info): Use string_file.
	* serial.c (serial_open_ops_1): Use stdio_file.
	(do_serial_close): Use delete.
	* stack.c (print_frame_arg): Use string_file.
	(print_frame_args): Remove local mem_fileopen stream, not used.
	(print_frame): Use string_file.
	* symmisc.c (maintenance_print_symbols): Use stdio_file.
	* symtab.h (struct symbol_computed_ops) <generate_c_location>:
	Take a 'string_file *' instead of a 'ui_file *'.
	* top.c (new_ui): Use stdio_file and stderr_file.
	(free_ui): Use delete.
	(execute_command_to_string): Use string_file.
	(quit_confirm): Use string_file.
	* tracepoint.c (collection_list::append_exp): Use string_file.
	* tui/tui-disasm.c (tui_disassemble): Use string_file.
	* tui/tui-file.c: Don't include "ui-file.h".
	(enum streamtype, struct tui_stream): Delete.
	(tui_file_new, tui_file_delete, tui_fileopen, tui_sfileopen)
	(tui_file_isatty, tui_file_rewind, tui_file_put): Delete.
	(tui_file::tui_file): New method.
	(tui_file_fputs): Delete.
	(tui_file_get_strbuf): Delete.
	(tui_file::puts): New method.
	(tui_file_adjust_strbuf): Delete.
	(tui_file_flush): Delete.
	(tui_file::flush): New method.
	* tui/tui-file.h: Tweak intro comment.
	Include ui-file.h.
	(tui_fileopen, tui_sfileopen, tui_file_get_strbuf)
	(tui_file_adjust_strbuf): Delete declarations.
	(class tui_file): New class.
	* tui/tui-io.c (tui_initialize_io): Use tui_file.
	* tui/tui-regs.c (tui_restore_gdbout): Use delete.
	(tui_register_format): Use string_stream.
	* tui/tui-stack.c (tui_make_status_line): Use string_file.
	(tui_get_function_from_frame): Use string_file.
	* typeprint.c (type_to_string): Use string_file.
	* ui-file.c (struct ui_file, ui_file_magic, ui_file_new): Delete.
	(null_stream): New global.
	(ui_file_delete): Delete.
	(ui_file::ui_file): New.
	(null_file_isatty): Delete.
	(ui_file::~ui_file): New.
	(null_file_rewind): Delete.
	(ui_file::printf): New.
	(null_file_put): Delete.
	(null_file_flush): Delete.
	(ui_file::putstr): New.
	(null_file_write): Delete.
	(ui_file::putstrn): New.
	(null_file_read): Delete.
	(ui_file::putc): New.
	(null_file_fputs): Delete.
	(null_file_write_async_safe): Delete.
	(ui_file::vprintf): New.
	(null_file_delete): Delete.
	(null_file::write): New.
	(null_file_fseek): Delete.
	(null_file::puts): New.
	(ui_file_data): Delete.
	(null_file::write_async_safe): New.
	(gdb_flush, ui_file_isatty): Adjust.
	(ui_file_put, ui_file_rewind): Delete.
	(ui_file_write): Adjust.
	(ui_file_write_for_put): Delete.
	(ui_file_write_async_safe, ui_file_read): Adjust.
	(ui_file_fseek): Delete.
	(fputs_unfiltered): Adjust.
	(set_ui_file_flush, set_ui_file_isatty, set_ui_file_rewind)
	(set_ui_file_put, set_ui_file_write, set_ui_file_write_async_safe)
	(set_ui_file_read, set_ui_file_fputs, set_ui_file_fseek)
	(set_ui_file_data): Delete.
	(string_file::~string_file, string_file::write)
	(struct accumulated_ui_file, do_ui_file_xstrdup, ui_file_xstrdup)
	(do_ui_file_as_string, ui_file_as_string): Delete.
	(do_ui_file_obsavestring, ui_file_obsavestring): Delete.
	(struct mem_file): Delete.
	(mem_file_new): Delete.
	(stdio_file::stdio_file): New.
	(mem_file_delete): Delete.
	(stdio_file::stdio_file): New.
	(mem_fileopen): Delete.
	(stdio_file::~stdio_file): New.
	(mem_file_rewind): Delete.
	(stdio_file::set_stream): New.
	(mem_file_put): Delete.
	(stdio_file::open): New.
	(mem_file_write): Delete.
	(stdio_file_magic, struct stdio_file): Delete.
	(stdio_file_new, stdio_file_delete, stdio_file_flush): Delete.
	(stdio_file::flush): New.
	(stdio_file_read): Rename to ...
	(stdio_file::read): ... this.  Adjust.
	(stdio_file_write): Rename to ...
	(stdio_file::write): ... this.  Adjust.
	(stdio_file_write_async_safe): Rename to ...
	(stdio_file::write_async_safe) ... this.  Adjust.
	(stdio_file_fputs): Rename to ...
	(stdio_file::puts) ... this.  Adjust.
	(stdio_file_isatty): Delete.
	(stdio_file_fseek): Delete.
	(stdio_file::isatty): New.
	(stderr_file_write): Rename to ...
	(stderr_file::write) ... this.  Adjust.
	(stderr_file_fputs): Rename to ...
	(stderr_file::puts) ... this.  Adjust.
	(stderr_fileopen, stdio_fileopen, gdb_fopen): Delete.
	(stderr_file::stderr_file): New.
	(tee_file_magic): Delete.
	(struct tee_file): Delete.
	(tee_file::tee_file): New.
	(tee_file_new): Delete.
	(tee_file::~tee_file): New.
	(tee_file_delete): Delete.
	(tee_file_flush): Rename to ...
	(tee_file::flush): ... this.  Adjust.
	(tee_file_write): Rename to ...
	(tee_file::write): ... this.  Adjust.
	(tee_file::write_async_safe): New.
	(tee_file_fputs): Rename to ...
	(tee_file::puts): ... this.  Adjust.
	(tee_file_isatty): Rename to ...
	(tee_file::isatty): ... this.  Adjust.
	* ui-file.h (struct obstack, struct ui_file): Don't
	forward-declare.
	(ui_file_new, ui_file_flush_ftype, set_ui_file_flush)
	(ui_file_write_ftype)
	(set_ui_file_write, ui_file_fputs_ftype, set_ui_file_fputs)
	(ui_file_write_async_safe_ftype, set_ui_file_write_async_safe)
	(ui_file_read_ftype, set_ui_file_read, ui_file_isatty_ftype)
	(set_ui_file_isatty, ui_file_rewind_ftype, set_ui_file_rewind)
	(ui_file_put_method_ftype, ui_file_put_ftype, set_ui_file_put)
	(ui_file_delete_ftype, set_ui_file_data, ui_file_fseek_ftype)
	(set_ui_file_fseek): Delete.
	(ui_file_data, ui_file_delete, ui_file_rewind)
	(struct ui_file): New.
	(ui_file_up): New.
	(class null_file): New.
	(null_stream): Declare.
	(ui_file_write_for_put, ui_file_put): Delete.
	(ui_file_xstrdup, ui_file_as_string, ui_file_obsavestring):
	Delete.
	(ui_file_fseek, mem_fileopen, stdio_fileopen, stderr_fileopen)
	(gdb_fopen, tee_file_new): Delete.
	(struct string_file): New.
	(struct stdio_file): New.
	(stdio_file_up): New.
	(struct stderr_file): New.
	(class tee_file): New.
	* ui-out.c (ui_out::field_stream): Take a 'string_file &' instead
	of a 'ui_file *'.  Adjust.
	* ui-out.h (class ui_out) <field_stream>: Likewise.
	* utils.c (do_ui_file_delete, make_cleanup_ui_file_delete)
	(null_stream): Delete.
	(error_stream): Take a 'string_file &' instead of a 'ui_file *'.
	Adjust.
	* utils.h (struct ui_file): Delete forward declaration..
	(make_cleanup_ui_file_delete, null_stream): Delete declarations.
	(error_stream): Take a 'string_file &' instead of a
	'ui_file *'.
	* varobj.c (varobj_value_get_print_value): Use string_file.
	* xtensa-tdep.c (xtensa_verify_config): Use string_file.
	* gdbarch.c: Regenerate.
2017-02-02 11:11:47 +00:00

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/* Multiple source language support for GDB.
Copyright (C) 1991-2017 Free Software Foundation, Inc.
Contributed by the Department of Computer Science at the State University
of New York at Buffalo.
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 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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, see <http://www.gnu.org/licenses/>. */
/* This file contains functions that return things that are specific
to languages. Each function should examine current_language if necessary,
and return the appropriate result. */
/* FIXME: Most of these would be better organized as macros which
return data out of a "language-specific" struct pointer that is set
whenever the working language changes. That would be a lot faster. */
#include "defs.h"
#include <ctype.h>
#include "symtab.h"
#include "gdbtypes.h"
#include "value.h"
#include "gdbcmd.h"
#include "expression.h"
#include "language.h"
#include "varobj.h"
#include "target.h"
#include "parser-defs.h"
#include "demangle.h"
#include "symfile.h"
#include "cp-support.h"
#include "frame.h"
extern void _initialize_language (void);
static void unk_lang_error (char *);
static int unk_lang_parser (struct parser_state *);
static void show_check (char *, int);
static void set_check (char *, int);
static void set_range_case (void);
static void unk_lang_emit_char (int c, struct type *type,
struct ui_file *stream, int quoter);
static void unk_lang_printchar (int c, struct type *type,
struct ui_file *stream);
static void unk_lang_value_print (struct value *, struct ui_file *,
const struct value_print_options *);
static CORE_ADDR unk_lang_trampoline (struct frame_info *, CORE_ADDR pc);
/* Forward declaration */
extern const struct language_defn unknown_language_defn;
/* The current (default at startup) state of type and range checking.
(If the modes are set to "auto", though, these are changed based
on the default language at startup, and then again based on the
language of the first source file. */
enum range_mode range_mode = range_mode_auto;
enum range_check range_check = range_check_off;
enum case_mode case_mode = case_mode_auto;
enum case_sensitivity case_sensitivity = case_sensitive_on;
/* The current language and language_mode (see language.h). */
const struct language_defn *current_language = &unknown_language_defn;
enum language_mode language_mode = language_mode_auto;
/* The language that the user expects to be typing in (the language
of main(), or the last language we notified them about, or C). */
const struct language_defn *expected_language;
/* The list of supported languages. The list itself is malloc'd. */
static const struct language_defn **languages;
static unsigned languages_size;
static unsigned languages_allocsize;
#define DEFAULT_ALLOCSIZE 4
/* The current values of the "set language/type/range" enum
commands. */
static const char *language;
static const char *type;
static const char *range;
static const char *case_sensitive;
/* Warning issued when current_language and the language of the current
frame do not match. */
char lang_frame_mismatch_warn[] =
"Warning: the current language does not match this frame.";
/* This page contains the functions corresponding to GDB commands
and their helpers. */
/* Show command. Display a warning if the language set
does not match the frame. */
static void
show_language_command (struct ui_file *file, int from_tty,
struct cmd_list_element *c, const char *value)
{
enum language flang; /* The language of the frame. */
if (language_mode == language_mode_auto)
fprintf_filtered (gdb_stdout,
_("The current source language is "
"\"auto; currently %s\".\n"),
current_language->la_name);
else
fprintf_filtered (gdb_stdout,
_("The current source language is \"%s\".\n"),
current_language->la_name);
if (has_stack_frames ())
{
struct frame_info *frame;
frame = get_selected_frame (NULL);
flang = get_frame_language (frame);
if (flang != language_unknown
&& language_mode == language_mode_manual
&& current_language->la_language != flang)
printf_filtered ("%s\n", lang_frame_mismatch_warn);
}
}
/* Set command. Change the current working language. */
static void
set_language_command (char *ignore, int from_tty, struct cmd_list_element *c)
{
int i;
enum language flang = language_unknown;
/* Search the list of languages for a match. */
for (i = 0; i < languages_size; i++)
{
if (strcmp (languages[i]->la_name, language) == 0)
{
/* Found it! Go into manual mode, and use this language. */
if (languages[i]->la_language == language_auto)
{
/* Enter auto mode. Set to the current frame's language, if
known, or fallback to the initial language. */
language_mode = language_mode_auto;
TRY
{
struct frame_info *frame;
frame = get_selected_frame (NULL);
flang = get_frame_language (frame);
}
CATCH (ex, RETURN_MASK_ERROR)
{
flang = language_unknown;
}
END_CATCH
if (flang != language_unknown)
set_language (flang);
else
set_initial_language ();
expected_language = current_language;
return;
}
else
{
/* Enter manual mode. Set the specified language. */
language_mode = language_mode_manual;
current_language = languages[i];
set_range_case ();
expected_language = current_language;
return;
}
}
}
internal_error (__FILE__, __LINE__,
"Couldn't find language `%s' in known languages list.",
language);
}
/* Show command. Display a warning if the range setting does
not match the current language. */
static void
show_range_command (struct ui_file *file, int from_tty,
struct cmd_list_element *c, const char *value)
{
if (range_mode == range_mode_auto)
{
char *tmp;
switch (range_check)
{
case range_check_on:
tmp = "on";
break;
case range_check_off:
tmp = "off";
break;
case range_check_warn:
tmp = "warn";
break;
default:
internal_error (__FILE__, __LINE__,
"Unrecognized range check setting.");
}
fprintf_filtered (gdb_stdout,
_("Range checking is \"auto; currently %s\".\n"),
tmp);
}
else
fprintf_filtered (gdb_stdout, _("Range checking is \"%s\".\n"),
value);
if (range_check != current_language->la_range_check)
warning (_("the current range check setting "
"does not match the language.\n"));
}
/* Set command. Change the setting for range checking. */
static void
set_range_command (char *ignore, int from_tty, struct cmd_list_element *c)
{
if (strcmp (range, "on") == 0)
{
range_check = range_check_on;
range_mode = range_mode_manual;
}
else if (strcmp (range, "warn") == 0)
{
range_check = range_check_warn;
range_mode = range_mode_manual;
}
else if (strcmp (range, "off") == 0)
{
range_check = range_check_off;
range_mode = range_mode_manual;
}
else if (strcmp (range, "auto") == 0)
{
range_mode = range_mode_auto;
set_range_case ();
return;
}
else
{
internal_error (__FILE__, __LINE__,
_("Unrecognized range check setting: \"%s\""), range);
}
if (range_check != current_language->la_range_check)
warning (_("the current range check setting "
"does not match the language.\n"));
}
/* Show command. Display a warning if the case sensitivity setting does
not match the current language. */
static void
show_case_command (struct ui_file *file, int from_tty,
struct cmd_list_element *c, const char *value)
{
if (case_mode == case_mode_auto)
{
char *tmp = NULL;
switch (case_sensitivity)
{
case case_sensitive_on:
tmp = "on";
break;
case case_sensitive_off:
tmp = "off";
break;
default:
internal_error (__FILE__, __LINE__,
"Unrecognized case-sensitive setting.");
}
fprintf_filtered (gdb_stdout,
_("Case sensitivity in "
"name search is \"auto; currently %s\".\n"),
tmp);
}
else
fprintf_filtered (gdb_stdout,
_("Case sensitivity in name search is \"%s\".\n"),
value);
if (case_sensitivity != current_language->la_case_sensitivity)
warning (_("the current case sensitivity setting does not match "
"the language.\n"));
}
/* Set command. Change the setting for case sensitivity. */
static void
set_case_command (char *ignore, int from_tty, struct cmd_list_element *c)
{
if (strcmp (case_sensitive, "on") == 0)
{
case_sensitivity = case_sensitive_on;
case_mode = case_mode_manual;
}
else if (strcmp (case_sensitive, "off") == 0)
{
case_sensitivity = case_sensitive_off;
case_mode = case_mode_manual;
}
else if (strcmp (case_sensitive, "auto") == 0)
{
case_mode = case_mode_auto;
set_range_case ();
return;
}
else
{
internal_error (__FILE__, __LINE__,
"Unrecognized case-sensitive setting: \"%s\"",
case_sensitive);
}
if (case_sensitivity != current_language->la_case_sensitivity)
warning (_("the current case sensitivity setting does not match "
"the language.\n"));
}
/* Set the status of range and type checking and case sensitivity based on
the current modes and the current language.
If SHOW is non-zero, then print out the current language,
type and range checking status. */
static void
set_range_case (void)
{
if (range_mode == range_mode_auto)
range_check = current_language->la_range_check;
if (case_mode == case_mode_auto)
case_sensitivity = current_language->la_case_sensitivity;
}
/* Set current language to (enum language) LANG. Returns previous
language. */
enum language
set_language (enum language lang)
{
int i;
enum language prev_language;
prev_language = current_language->la_language;
for (i = 0; i < languages_size; i++)
{
if (languages[i]->la_language == lang)
{
current_language = languages[i];
set_range_case ();
break;
}
}
return prev_language;
}
/* Print out the current language settings: language, range and
type checking. If QUIETLY, print only what has changed. */
void
language_info (int quietly)
{
if (quietly && expected_language == current_language)
return;
expected_language = current_language;
printf_unfiltered (_("Current language: %s\n"), language);
show_language_command (NULL, 1, NULL, NULL);
if (!quietly)
{
printf_unfiltered (_("Range checking: %s\n"), range);
show_range_command (NULL, 1, NULL, NULL);
printf_unfiltered (_("Case sensitivity: %s\n"), case_sensitive);
show_case_command (NULL, 1, NULL, NULL);
}
}
/* Returns non-zero if the value is a pointer type. */
int
pointer_type (struct type *type)
{
return TYPE_CODE (type) == TYPE_CODE_PTR ||
TYPE_CODE (type) == TYPE_CODE_REF;
}
/* This page contains functions that return info about
(struct value) values used in GDB. */
/* Returns non-zero if the value VAL represents a true value. */
int
value_true (struct value *val)
{
/* It is possible that we should have some sort of error if a non-boolean
value is used in this context. Possibly dependent on some kind of
"boolean-checking" option like range checking. But it should probably
not depend on the language except insofar as is necessary to identify
a "boolean" value (i.e. in C using a float, pointer, etc., as a boolean
should be an error, probably). */
return !value_logical_not (val);
}
/* This page contains functions for the printing out of
error messages that occur during type- and range-
checking. */
/* This is called when a language fails a range-check. The
first argument should be a printf()-style format string, and the
rest of the arguments should be its arguments. If range_check is
range_check_on, an error is printed; if range_check_warn, a warning;
otherwise just the message. */
void
range_error (const char *string,...)
{
va_list args;
va_start (args, string);
switch (range_check)
{
case range_check_warn:
vwarning (string, args);
break;
case range_check_on:
verror (string, args);
break;
case range_check_off:
/* FIXME: cagney/2002-01-30: Should this function print anything
when range error is off? */
vfprintf_filtered (gdb_stderr, string, args);
fprintf_filtered (gdb_stderr, "\n");
break;
default:
internal_error (__FILE__, __LINE__, _("bad switch"));
}
va_end (args);
}
/* This page contains miscellaneous functions. */
/* Return the language enum for a given language string. */
enum language
language_enum (char *str)
{
int i;
for (i = 0; i < languages_size; i++)
if (strcmp (languages[i]->la_name, str) == 0)
return languages[i]->la_language;
return language_unknown;
}
/* Return the language struct for a given language enum. */
const struct language_defn *
language_def (enum language lang)
{
int i;
for (i = 0; i < languages_size; i++)
{
if (languages[i]->la_language == lang)
{
return languages[i];
}
}
return NULL;
}
/* Return the language as a string. */
const char *
language_str (enum language lang)
{
int i;
for (i = 0; i < languages_size; i++)
{
if (languages[i]->la_language == lang)
{
return languages[i]->la_name;
}
}
return "Unknown";
}
static void
set_check (char *ignore, int from_tty)
{
printf_unfiltered (
"\"set check\" must be followed by the name of a check subcommand.\n");
help_list (setchecklist, "set check ", all_commands, gdb_stdout);
}
static void
show_check (char *ignore, int from_tty)
{
cmd_show_list (showchecklist, from_tty, "");
}
/* Add a language to the set of known languages. */
void
add_language (const struct language_defn *lang)
{
/* For the "set language" command. */
static const char **language_names = NULL;
/* For the "help set language" command. */
if (lang->la_magic != LANG_MAGIC)
{
fprintf_unfiltered (gdb_stderr,
"Magic number of %s language struct wrong\n",
lang->la_name);
internal_error (__FILE__, __LINE__,
_("failed internal consistency check"));
}
if (!languages)
{
languages_allocsize = DEFAULT_ALLOCSIZE;
languages = XNEWVEC (const struct language_defn *, languages_allocsize);
}
if (languages_size >= languages_allocsize)
{
languages_allocsize *= 2;
languages = (const struct language_defn **) xrealloc ((char *) languages,
languages_allocsize * sizeof (*languages));
}
languages[languages_size++] = lang;
/* Build the language names array, to be used as enumeration in the
set language" enum command. */
language_names = XRESIZEVEC (const char *, language_names,
languages_size + 1);
for (int i = 0; i < languages_size; ++i)
language_names[i] = languages[i]->la_name;
language_names[languages_size] = NULL;
/* Add the filename extensions. */
if (lang->la_filename_extensions != NULL)
{
int i;
for (i = 0; lang->la_filename_extensions[i] != NULL; ++i)
add_filename_language (lang->la_filename_extensions[i],
lang->la_language);
}
/* Build the "help set language" docs. */
string_file doc;
doc.printf (_("Set the current source language.\n"
"The currently understood settings are:\n\nlocal or "
"auto Automatic setting based on source file\n"));
for (int i = 0; i < languages_size; ++i)
{
/* Already dealt with these above. */
if (languages[i]->la_language == language_unknown
|| languages[i]->la_language == language_auto)
continue;
/* FIXME: i18n: for now assume that the human-readable name is
just a capitalization of the internal name. */
doc.printf ("%-16s Use the %c%s language\n",
languages[i]->la_name,
/* Capitalize first letter of language name. */
toupper (languages[i]->la_name[0]),
languages[i]->la_name + 1);
}
add_setshow_enum_cmd ("language", class_support,
(const char **) language_names,
&language,
doc.c_str (),
_("Show the current source language."),
NULL, set_language_command,
show_language_command,
&setlist, &showlist);
}
/* Iterate through all registered languages looking for and calling
any non-NULL struct language_defn.skip_trampoline() functions.
Return the result from the first that returns non-zero, or 0 if all
`fail'. */
CORE_ADDR
skip_language_trampoline (struct frame_info *frame, CORE_ADDR pc)
{
int i;
for (i = 0; i < languages_size; i++)
{
if (languages[i]->skip_trampoline)
{
CORE_ADDR real_pc = (languages[i]->skip_trampoline) (frame, pc);
if (real_pc)
return real_pc;
}
}
return 0;
}
/* Return demangled language symbol, or NULL.
FIXME: Options are only useful for certain languages and ignored
by others, so it would be better to remove them here and have a
more flexible demangler for the languages that need it.
FIXME: Sometimes the demangler is invoked when we don't know the
language, so we can't use this everywhere. */
char *
language_demangle (const struct language_defn *current_language,
const char *mangled, int options)
{
if (current_language != NULL && current_language->la_demangle)
return current_language->la_demangle (mangled, options);
return NULL;
}
/* See langauge.h. */
int
language_sniff_from_mangled_name (const struct language_defn *lang,
const char *mangled, char **demangled)
{
gdb_assert (lang != NULL);
if (lang->la_sniff_from_mangled_name == NULL)
{
*demangled = NULL;
return 0;
}
return lang->la_sniff_from_mangled_name (mangled, demangled);
}
/* Return class name from physname or NULL. */
char *
language_class_name_from_physname (const struct language_defn *lang,
const char *physname)
{
if (lang != NULL && lang->la_class_name_from_physname)
return lang->la_class_name_from_physname (physname);
return NULL;
}
/* Return non-zero if TYPE should be passed (and returned) by
reference at the language level. */
int
language_pass_by_reference (struct type *type)
{
return current_language->la_pass_by_reference (type);
}
/* Return zero; by default, types are passed by value at the language
level. The target ABI may pass or return some structs by reference
independent of this. */
int
default_pass_by_reference (struct type *type)
{
return 0;
}
/* Return the default string containing the list of characters
delimiting words. This is a reasonable default value that
most languages should be able to use. */
char *
default_word_break_characters (void)
{
return " \t\n!@#$%^&*()+=|~`}{[]\"';:?/>.<,-";
}
/* Print the index of array elements using the C99 syntax. */
void
default_print_array_index (struct value *index_value, struct ui_file *stream,
const struct value_print_options *options)
{
fprintf_filtered (stream, "[");
LA_VALUE_PRINT (index_value, stream, options);
fprintf_filtered (stream, "] = ");
}
void
default_get_string (struct value *value, gdb_byte **buffer, int *length,
struct type **char_type, const char **charset)
{
error (_("Getting a string is unsupported in this language."));
}
/* Define the language that is no language. */
static int
unk_lang_parser (struct parser_state *ps)
{
return 1;
}
static void
unk_lang_error (char *msg)
{
error (_("Attempted to parse an expression with unknown language"));
}
static void
unk_lang_emit_char (int c, struct type *type, struct ui_file *stream,
int quoter)
{
error (_("internal error - unimplemented "
"function unk_lang_emit_char called."));
}
static void
unk_lang_printchar (int c, struct type *type, struct ui_file *stream)
{
error (_("internal error - unimplemented "
"function unk_lang_printchar called."));
}
static void
unk_lang_printstr (struct ui_file *stream, struct type *type,
const gdb_byte *string, unsigned int length,
const char *encoding, int force_ellipses,
const struct value_print_options *options)
{
error (_("internal error - unimplemented "
"function unk_lang_printstr called."));
}
static void
unk_lang_print_type (struct type *type, const char *varstring,
struct ui_file *stream, int show, int level,
const struct type_print_options *flags)
{
error (_("internal error - unimplemented "
"function unk_lang_print_type called."));
}
static void
unk_lang_val_print (struct type *type,
int embedded_offset, CORE_ADDR address,
struct ui_file *stream, int recurse,
struct value *val,
const struct value_print_options *options)
{
error (_("internal error - unimplemented "
"function unk_lang_val_print called."));
}
static void
unk_lang_value_print (struct value *val, struct ui_file *stream,
const struct value_print_options *options)
{
error (_("internal error - unimplemented "
"function unk_lang_value_print called."));
}
static CORE_ADDR unk_lang_trampoline (struct frame_info *frame, CORE_ADDR pc)
{
return 0;
}
/* Unknown languages just use the cplus demangler. */
static char *unk_lang_demangle (const char *mangled, int options)
{
return gdb_demangle (mangled, options);
}
static char *unk_lang_class_name (const char *mangled)
{
return NULL;
}
static const struct op_print unk_op_print_tab[] =
{
{NULL, OP_NULL, PREC_NULL, 0}
};
static void
unknown_language_arch_info (struct gdbarch *gdbarch,
struct language_arch_info *lai)
{
lai->string_char_type = builtin_type (gdbarch)->builtin_char;
lai->bool_type_default = builtin_type (gdbarch)->builtin_int;
lai->primitive_type_vector = GDBARCH_OBSTACK_CALLOC (gdbarch, 1,
struct type *);
}
const struct language_defn unknown_language_defn =
{
"unknown",
"Unknown",
language_unknown,
range_check_off,
case_sensitive_on,
array_row_major,
macro_expansion_no,
NULL,
&exp_descriptor_standard,
unk_lang_parser,
unk_lang_error,
null_post_parser,
unk_lang_printchar, /* Print character constant */
unk_lang_printstr,
unk_lang_emit_char,
unk_lang_print_type, /* Print a type using appropriate syntax */
default_print_typedef, /* Print a typedef using appropriate syntax */
unk_lang_val_print, /* Print a value using appropriate syntax */
unk_lang_value_print, /* Print a top-level value */
default_read_var_value, /* la_read_var_value */
unk_lang_trampoline, /* Language specific skip_trampoline */
"this", /* name_of_this */
basic_lookup_symbol_nonlocal, /* lookup_symbol_nonlocal */
basic_lookup_transparent_type,/* lookup_transparent_type */
unk_lang_demangle, /* Language specific symbol demangler */
NULL,
unk_lang_class_name, /* Language specific
class_name_from_physname */
unk_op_print_tab, /* expression operators for printing */
1, /* c-style arrays */
0, /* String lower bound */
default_word_break_characters,
default_make_symbol_completion_list,
unknown_language_arch_info, /* la_language_arch_info. */
default_print_array_index,
default_pass_by_reference,
default_get_string,
NULL, /* la_get_symbol_name_cmp */
iterate_over_symbols,
&default_varobj_ops,
NULL,
NULL,
LANG_MAGIC
};
/* These two structs define fake entries for the "local" and "auto"
options. */
const struct language_defn auto_language_defn =
{
"auto",
"Auto",
language_auto,
range_check_off,
case_sensitive_on,
array_row_major,
macro_expansion_no,
NULL,
&exp_descriptor_standard,
unk_lang_parser,
unk_lang_error,
null_post_parser,
unk_lang_printchar, /* Print character constant */
unk_lang_printstr,
unk_lang_emit_char,
unk_lang_print_type, /* Print a type using appropriate syntax */
default_print_typedef, /* Print a typedef using appropriate syntax */
unk_lang_val_print, /* Print a value using appropriate syntax */
unk_lang_value_print, /* Print a top-level value */
default_read_var_value, /* la_read_var_value */
unk_lang_trampoline, /* Language specific skip_trampoline */
"this", /* name_of_this */
basic_lookup_symbol_nonlocal, /* lookup_symbol_nonlocal */
basic_lookup_transparent_type,/* lookup_transparent_type */
unk_lang_demangle, /* Language specific symbol demangler */
NULL,
unk_lang_class_name, /* Language specific
class_name_from_physname */
unk_op_print_tab, /* expression operators for printing */
1, /* c-style arrays */
0, /* String lower bound */
default_word_break_characters,
default_make_symbol_completion_list,
unknown_language_arch_info, /* la_language_arch_info. */
default_print_array_index,
default_pass_by_reference,
default_get_string,
NULL, /* la_get_symbol_name_cmp */
iterate_over_symbols,
&default_varobj_ops,
NULL,
NULL,
LANG_MAGIC
};
const struct language_defn local_language_defn =
{
"local",
"Local",
language_auto,
range_check_off,
case_sensitive_on,
array_row_major,
macro_expansion_no,
NULL,
&exp_descriptor_standard,
unk_lang_parser,
unk_lang_error,
null_post_parser,
unk_lang_printchar, /* Print character constant */
unk_lang_printstr,
unk_lang_emit_char,
unk_lang_print_type, /* Print a type using appropriate syntax */
default_print_typedef, /* Print a typedef using appropriate syntax */
unk_lang_val_print, /* Print a value using appropriate syntax */
unk_lang_value_print, /* Print a top-level value */
default_read_var_value, /* la_read_var_value */
unk_lang_trampoline, /* Language specific skip_trampoline */
"this", /* name_of_this */
basic_lookup_symbol_nonlocal, /* lookup_symbol_nonlocal */
basic_lookup_transparent_type,/* lookup_transparent_type */
unk_lang_demangle, /* Language specific symbol demangler */
NULL,
unk_lang_class_name, /* Language specific
class_name_from_physname */
unk_op_print_tab, /* expression operators for printing */
1, /* c-style arrays */
0, /* String lower bound */
default_word_break_characters,
default_make_symbol_completion_list,
unknown_language_arch_info, /* la_language_arch_info. */
default_print_array_index,
default_pass_by_reference,
default_get_string,
NULL, /* la_get_symbol_name_cmp */
iterate_over_symbols,
&default_varobj_ops,
NULL,
NULL,
LANG_MAGIC
};
/* Per-architecture language information. */
static struct gdbarch_data *language_gdbarch_data;
struct language_gdbarch
{
/* A vector of per-language per-architecture info. Indexed by "enum
language". */
struct language_arch_info arch_info[nr_languages];
};
static void *
language_gdbarch_post_init (struct gdbarch *gdbarch)
{
struct language_gdbarch *l;
int i;
l = GDBARCH_OBSTACK_ZALLOC (gdbarch, struct language_gdbarch);
for (i = 0; i < languages_size; i++)
{
if (languages[i] != NULL
&& languages[i]->la_language_arch_info != NULL)
languages[i]->la_language_arch_info
(gdbarch, l->arch_info + languages[i]->la_language);
}
return l;
}
struct type *
language_string_char_type (const struct language_defn *la,
struct gdbarch *gdbarch)
{
struct language_gdbarch *ld
= (struct language_gdbarch *) gdbarch_data (gdbarch, language_gdbarch_data);
return ld->arch_info[la->la_language].string_char_type;
}
struct type *
language_bool_type (const struct language_defn *la,
struct gdbarch *gdbarch)
{
struct language_gdbarch *ld
= (struct language_gdbarch *) gdbarch_data (gdbarch, language_gdbarch_data);
if (ld->arch_info[la->la_language].bool_type_symbol)
{
struct symbol *sym;
sym = lookup_symbol (ld->arch_info[la->la_language].bool_type_symbol,
NULL, VAR_DOMAIN, NULL).symbol;
if (sym)
{
struct type *type = SYMBOL_TYPE (sym);
if (type && TYPE_CODE (type) == TYPE_CODE_BOOL)
return type;
}
}
return ld->arch_info[la->la_language].bool_type_default;
}
/* Helper function for primitive type lookup. */
static struct type **
language_lookup_primitive_type_1 (const struct language_arch_info *lai,
const char *name)
{
struct type **p;
for (p = lai->primitive_type_vector; (*p) != NULL; p++)
{
if (strcmp (TYPE_NAME (*p), name) == 0)
return p;
}
return NULL;
}
/* See language.h. */
struct type *
language_lookup_primitive_type (const struct language_defn *la,
struct gdbarch *gdbarch,
const char *name)
{
struct language_gdbarch *ld =
(struct language_gdbarch *) gdbarch_data (gdbarch, language_gdbarch_data);
struct type **typep;
typep = language_lookup_primitive_type_1 (&ld->arch_info[la->la_language],
name);
if (typep == NULL)
return NULL;
return *typep;
}
/* Helper function for type lookup as a symbol.
Create the symbol corresponding to type TYPE in language LANG. */
static struct symbol *
language_alloc_type_symbol (enum language lang, struct type *type)
{
struct symbol *symbol;
struct gdbarch *gdbarch;
gdb_assert (!TYPE_OBJFILE_OWNED (type));
gdbarch = TYPE_OWNER (type).gdbarch;
symbol = GDBARCH_OBSTACK_ZALLOC (gdbarch, struct symbol);
symbol->ginfo.name = TYPE_NAME (type);
symbol->ginfo.language = lang;
symbol->owner.arch = gdbarch;
SYMBOL_OBJFILE_OWNED (symbol) = 0;
SYMBOL_TYPE (symbol) = type;
SYMBOL_DOMAIN (symbol) = VAR_DOMAIN;
SYMBOL_ACLASS_INDEX (symbol) = LOC_TYPEDEF;
return symbol;
}
/* Initialize the primitive type symbols of language LD.
The primitive type vector must have already been initialized. */
static void
language_init_primitive_type_symbols (struct language_arch_info *lai,
const struct language_defn *la,
struct gdbarch *gdbarch)
{
int n;
gdb_assert (lai->primitive_type_vector != NULL);
for (n = 0; lai->primitive_type_vector[n] != NULL; ++n)
continue;
lai->primitive_type_symbols
= GDBARCH_OBSTACK_CALLOC (gdbarch, n + 1, struct symbol *);
for (n = 0; lai->primitive_type_vector[n] != NULL; ++n)
{
lai->primitive_type_symbols[n]
= language_alloc_type_symbol (la->la_language,
lai->primitive_type_vector[n]);
}
/* Note: The result of symbol lookup is normally a symbol *and* the block
it was found in. Builtin types don't live in blocks. We *could* give
them one, but there is no current need so to keep things simple symbol
lookup is extended to allow for BLOCK_FOUND to be NULL. */
}
/* See language.h. */
struct symbol *
language_lookup_primitive_type_as_symbol (const struct language_defn *la,
struct gdbarch *gdbarch,
const char *name)
{
struct language_gdbarch *ld
= (struct language_gdbarch *) gdbarch_data (gdbarch, language_gdbarch_data);
struct language_arch_info *lai = &ld->arch_info[la->la_language];
struct type **typep;
struct symbol *sym;
if (symbol_lookup_debug)
{
fprintf_unfiltered (gdb_stdlog,
"language_lookup_primitive_type_as_symbol"
" (%s, %s, %s)",
la->la_name, host_address_to_string (gdbarch), name);
}
typep = language_lookup_primitive_type_1 (lai, name);
if (typep == NULL)
{
if (symbol_lookup_debug)
fprintf_unfiltered (gdb_stdlog, " = NULL\n");
return NULL;
}
/* The set of symbols is lazily initialized. */
if (lai->primitive_type_symbols == NULL)
language_init_primitive_type_symbols (lai, la, gdbarch);
sym = lai->primitive_type_symbols[typep - lai->primitive_type_vector];
if (symbol_lookup_debug)
fprintf_unfiltered (gdb_stdlog, " = %s\n", host_address_to_string (sym));
return sym;
}
/* Initialize the language routines. */
void
_initialize_language (void)
{
static const char *const type_or_range_names[]
= { "on", "off", "warn", "auto", NULL };
static const char *const case_sensitive_names[]
= { "on", "off", "auto", NULL };
language_gdbarch_data
= gdbarch_data_register_post_init (language_gdbarch_post_init);
/* GDB commands for language specific stuff. */
add_prefix_cmd ("check", no_class, set_check,
_("Set the status of the type/range checker."),
&setchecklist, "set check ", 0, &setlist);
add_alias_cmd ("c", "check", no_class, 1, &setlist);
add_alias_cmd ("ch", "check", no_class, 1, &setlist);
add_prefix_cmd ("check", no_class, show_check,
_("Show the status of the type/range checker."),
&showchecklist, "show check ", 0, &showlist);
add_alias_cmd ("c", "check", no_class, 1, &showlist);
add_alias_cmd ("ch", "check", no_class, 1, &showlist);
add_setshow_enum_cmd ("range", class_support, type_or_range_names,
&range,
_("Set range checking. (on/warn/off/auto)"),
_("Show range checking. (on/warn/off/auto)"),
NULL, set_range_command,
show_range_command,
&setchecklist, &showchecklist);
add_setshow_enum_cmd ("case-sensitive", class_support, case_sensitive_names,
&case_sensitive, _("\
Set case sensitivity in name search. (on/off/auto)"), _("\
Show case sensitivity in name search. (on/off/auto)"), _("\
For Fortran the default is off; for other languages the default is on."),
set_case_command,
show_case_command,
&setlist, &showlist);
add_language (&auto_language_defn);
add_language (&local_language_defn);
add_language (&unknown_language_defn);
language = xstrdup ("auto");
type = xstrdup ("auto");
range = xstrdup ("auto");
case_sensitive = xstrdup ("auto");
/* Have the above take effect. */
set_language (language_auto);
}
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