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Return unique_xmalloc_ptr from gdbscm_scm_to_string
This changes gdbscm_scm_to_string to return a unique_xmalloc_ptr and then fixes all the callers. This allows for the removal of some cleanups. gdb/ChangeLog 2018-07-17 Tom Tromey <tom@tromey.com> * guile/scm-param.c (pascm_set_func, pascm_show_func) (compute_enum_list, pascm_set_param_value_x) (gdbscm_parameter_value): Update. * guile/guile-internal.h (gdbscm_scm_to_string): Update. (gdbscm_scm_to_host_string): Update. * guile/scm-math.c (vlscm_convert_typed_value_from_scheme): Update. * guile/scm-cmd.c (cmdscm_add_completion): Update. * guile/scm-pretty-print.c (ppscm_print_string_repr): Update. * guile/scm-string.c (gdbscm_scm_to_string): Return unique_xmalloc_ptr. (gdbscm_scm_to_host_string): Likewise.
This commit is contained in:
Tom Tromey
parent
a1a31cb8dc
commit
c6c6149af4
@ -1,3 +1,18 @@
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2018-07-17 Tom Tromey <tom@tromey.com>
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* guile/scm-param.c (pascm_set_func, pascm_show_func)
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(compute_enum_list, pascm_set_param_value_x)
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(gdbscm_parameter_value): Update.
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* guile/guile-internal.h (gdbscm_scm_to_string): Update.
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(gdbscm_scm_to_host_string): Update.
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* guile/scm-math.c (vlscm_convert_typed_value_from_scheme):
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Update.
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* guile/scm-cmd.c (cmdscm_add_completion): Update.
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* guile/scm-pretty-print.c (ppscm_print_string_repr): Update.
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* guile/scm-string.c (gdbscm_scm_to_string): Return
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unique_xmalloc_ptr.
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(gdbscm_scm_to_host_string): Likewise.
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2018-07-17 Tom Tromey <tom@tromey.com>
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* guile/guile.c (gdbscm_eval_from_control_command): Update.
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@ -526,14 +526,14 @@ extern SCM gdbscm_scm_from_c_string (const char *string);
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extern SCM gdbscm_scm_from_printf (const char *format, ...)
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ATTRIBUTE_PRINTF (1, 2);
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extern char *gdbscm_scm_to_string (SCM string, size_t *lenp,
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const char *charset,
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int strict, SCM *except_scmp);
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extern gdb::unique_xmalloc_ptr<char> gdbscm_scm_to_string
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(SCM string, size_t *lenp, const char *charset, int strict, SCM *except_scmp);
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extern SCM gdbscm_scm_from_string (const char *string, size_t len,
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const char *charset, int strict);
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extern char *gdbscm_scm_to_host_string (SCM string, size_t *lenp, SCM *except);
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extern gdb::unique_xmalloc_ptr<char> gdbscm_scm_to_host_string
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(SCM string, size_t *lenp, SCM *except);
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extern SCM gdbscm_scm_from_host_string (const char *string, size_t len);
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@ -362,8 +362,8 @@ cmdscm_add_completion (SCM completion, completion_tracker &tracker)
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}
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gdb::unique_xmalloc_ptr<char> item
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(gdbscm_scm_to_string (completion, NULL, host_charset (), 1,
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&except_scm));
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= gdbscm_scm_to_string (completion, NULL, host_charset (), 1,
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&except_scm);
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if (item == NULL)
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{
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/* Inform the user, but otherwise ignore the entire result. */
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@ -826,7 +826,6 @@ vlscm_convert_typed_value_from_scheme (const char *func_name,
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}
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else if (scm_is_string (obj))
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{
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char *s;
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size_t len;
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struct cleanup *cleanup;
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@ -840,19 +839,15 @@ vlscm_convert_typed_value_from_scheme (const char *func_name,
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else
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{
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/* TODO: Provide option to specify conversion strategy. */
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s = gdbscm_scm_to_string (obj, &len,
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gdb::unique_xmalloc_ptr<char> s
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= gdbscm_scm_to_string (obj, &len,
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target_charset (gdbarch),
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0 /*non-strict*/,
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&except_scm);
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if (s != NULL)
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{
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cleanup = make_cleanup (xfree, s);
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value
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= value_cstring (s, len,
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language_string_char_type (language,
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gdbarch));
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do_cleanups (cleanup);
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}
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value = value_cstring (s.get (), len,
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language_string_char_type (language,
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gdbarch));
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else
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value = NULL;
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}
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@ -273,8 +273,6 @@ pascm_set_func (const char *args, int from_tty, struct cmd_list_element *c)
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{
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param_smob *p_smob = (param_smob *) get_cmd_context (c);
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SCM self, result, exception;
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char *msg;
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struct cleanup *cleanups;
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gdb_assert (gdbscm_is_procedure (p_smob->set_func));
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@ -291,18 +289,17 @@ pascm_set_func (const char *args, int from_tty, struct cmd_list_element *c)
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if (!scm_is_string (result))
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error (_("Result of %s set-func is not a string."), p_smob->name);
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msg = gdbscm_scm_to_host_string (result, NULL, &exception);
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gdb::unique_xmalloc_ptr<char> msg = gdbscm_scm_to_host_string (result, NULL,
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&exception);
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if (msg == NULL)
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{
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gdbscm_print_gdb_exception (SCM_BOOL_F, exception);
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error (_("Error converting show text to host string."));
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}
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cleanups = make_cleanup (xfree, msg);
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/* GDB is usually silent when a parameter is set. */
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if (*msg != '\0')
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fprintf_filtered (gdb_stdout, "%s\n", msg);
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do_cleanups (cleanups);
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if (*msg.get () != '\0')
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fprintf_filtered (gdb_stdout, "%s\n", msg.get ());
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}
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/* A callback function that is registered against the respective
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@ -316,8 +313,6 @@ pascm_show_func (struct ui_file *file, int from_tty,
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{
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param_smob *p_smob = (param_smob *) get_cmd_context (c);
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SCM value_scm, self, result, exception;
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char *msg;
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struct cleanup *cleanups;
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gdb_assert (gdbscm_is_procedure (p_smob->show_func));
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@ -338,16 +333,15 @@ pascm_show_func (struct ui_file *file, int from_tty,
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_("Error occurred showing parameter."));
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}
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msg = gdbscm_scm_to_host_string (result, NULL, &exception);
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gdb::unique_xmalloc_ptr<char> msg = gdbscm_scm_to_host_string (result, NULL,
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&exception);
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if (msg == NULL)
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{
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gdbscm_print_gdb_exception (SCM_BOOL_F, exception);
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error (_("Error converting show text to host string."));
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}
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cleanups = make_cleanup (xfree, msg);
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fprintf_filtered (file, "%s\n", msg);
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do_cleanups (cleanups);
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fprintf_filtered (file, "%s\n", msg.get ());
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}
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/* A helper function that dispatches to the appropriate add_setshow
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@ -516,7 +510,8 @@ compute_enum_list (SCM enum_values_scm, int arg_pos, const char *func_name)
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freeargv (enum_values);
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SCM_ASSERT_TYPE (0, value, arg_pos, func_name, _("string"));
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}
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enum_values[i] = gdbscm_scm_to_host_string (value, NULL, &exception);
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enum_values[i] = gdbscm_scm_to_host_string (value, NULL,
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&exception).release ();
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if (enum_values[i] == NULL)
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{
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freeargv (enum_values);
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@ -683,34 +678,33 @@ pascm_set_param_value_x (enum var_types type, union pascm_variable *var,
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}
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else
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{
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char *string;
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SCM exception;
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string = gdbscm_scm_to_host_string (value, NULL, &exception);
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gdb::unique_xmalloc_ptr<char> string
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= gdbscm_scm_to_host_string (value, NULL, &exception);
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if (string == NULL)
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gdbscm_throw (exception);
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xfree (var->stringval);
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var->stringval = string;
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var->stringval = string.release ();
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}
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break;
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case var_enum:
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{
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int i;
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char *str;
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SCM exception;
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SCM_ASSERT_TYPE (scm_is_string (value), value, arg_pos, func_name,
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_("string"));
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str = gdbscm_scm_to_host_string (value, NULL, &exception);
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gdb::unique_xmalloc_ptr<char> str
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= gdbscm_scm_to_host_string (value, NULL, &exception);
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if (str == NULL)
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gdbscm_throw (exception);
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for (i = 0; enumeration[i]; ++i)
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{
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if (strcmp (enumeration[i], str) == 0)
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if (strcmp (enumeration[i], str.get ()) == 0)
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break;
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}
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xfree (str);
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if (enumeration[i] == NULL)
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{
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gdbscm_out_of_range_error (func_name, arg_pos, value,
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@ -1059,17 +1053,17 @@ gdbscm_parameter_value (SCM self)
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}
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else
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{
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char *name;
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SCM except_scm;
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struct cmd_list_element *alias, *prefix, *cmd;
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char *newarg;
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int found = -1;
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struct gdb_exception except = exception_none;
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name = gdbscm_scm_to_host_string (self, NULL, &except_scm);
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gdb::unique_xmalloc_ptr<char> name
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= gdbscm_scm_to_host_string (self, NULL, &except_scm);
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if (name == NULL)
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gdbscm_throw (except_scm);
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newarg = concat ("show ", name, (char *) NULL);
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newarg = concat ("show ", name.get (), (char *) NULL);
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TRY
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{
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found = lookup_cmd_composition (newarg, &alias, &prefix, &cmd);
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@ -1080,7 +1074,6 @@ gdbscm_parameter_value (SCM self)
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}
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END_CATCH
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xfree (name);
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xfree (newarg);
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GDBSCM_HANDLE_GDB_EXCEPTION (except);
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if (!found)
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@ -668,18 +668,16 @@ ppscm_print_string_repr (SCM printer, enum display_hint hint,
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}
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else if (scm_is_string (str_scm))
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{
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struct cleanup *cleanup;
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size_t length;
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char *string
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gdb::unique_xmalloc_ptr<char> string
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= gdbscm_scm_to_string (str_scm, &length,
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target_charset (gdbarch), 0 /*!strict*/, NULL);
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cleanup = make_cleanup (xfree, string);
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if (hint == HINT_STRING)
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{
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struct type *type = builtin_type (gdbarch)->builtin_char;
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LA_PRINT_STRING (stream, type, (gdb_byte *) string,
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LA_PRINT_STRING (stream, type, (gdb_byte *) string.get (),
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length, NULL, 0, options);
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}
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else
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@ -690,14 +688,13 @@ ppscm_print_string_repr (SCM printer, enum display_hint hint,
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for (i = 0; i < length; ++i)
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{
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if (string[i] == '\0')
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if (string.get ()[i] == '\0')
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fputs_filtered ("\\000", stream);
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else
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fputc_filtered (string[i], stream);
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fputc_filtered (string.get ()[i], stream);
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}
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}
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result = STRING_REPR_OK;
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do_cleanups (cleanup);
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}
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else if (lsscm_is_lazy_string (str_scm))
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{
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@ -113,10 +113,9 @@ gdbscm_call_scm_to_stringn (void *datap)
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If STRICT is zero, then escape sequences are used for characters that
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can't be converted, and EXCEPT_SCMP may be passed as NULL.
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Space for the result is allocated with malloc, caller must free.
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It is an error to call this if STRING is not a string. */
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char *
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gdb::unique_xmalloc_ptr<char>
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gdbscm_scm_to_string (SCM string, size_t *lenp,
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const char *charset, int strict, SCM *except_scmp)
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{
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@ -136,7 +135,7 @@ gdbscm_scm_to_string (SCM string, size_t *lenp,
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if (gdbscm_is_false (scm_result))
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{
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gdb_assert (data.result != NULL);
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return data.result;
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return gdb::unique_xmalloc_ptr<char> (data.result);
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}
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gdb_assert (gdbscm_is_exception (scm_result));
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*except_scmp = scm_result;
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@ -214,10 +213,9 @@ gdbscm_scm_from_string (const char *string, size_t len,
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Returns NULL if there is a conversion error, with the exception object
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stored in *EXCEPT_SCMP.
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Space for the result is allocated with malloc, caller must free.
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It is an error to call this if STRING is not a string. */
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char *
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gdb::unique_xmalloc_ptr<char>
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gdbscm_scm_to_host_string (SCM string, size_t *lenp, SCM *except_scmp)
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{
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return gdbscm_scm_to_string (string, lenp, host_charset (), 1, except_scmp);
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