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53befeb700
(Not quite finished, the following will be done tomorrow. module/srfi/*.scm module/rnrs/*.scm module/scripts/*.scm testsuite/*.scm guile-readline/* )
284 lines
7.6 KiB
C
284 lines
7.6 KiB
C
/* Copyright (C) 1995,1996,1997,1998,2000,2001, 2004, 2006 Free Software Foundation, Inc.
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public License
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* as published by the Free Software Foundation; either version 3 of
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* the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
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* 02110-1301 USA
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*/
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#ifdef HAVE_CONFIG_H
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# include <config.h>
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#endif
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#include <stdio.h>
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#include <errno.h>
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#include "libguile/_scm.h"
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#include "libguile/dynwind.h"
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#include "libguile/pairs.h"
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#include "libguile/strings.h"
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#include "libguile/throw.h"
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#include "libguile/validate.h"
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#include "libguile/error.h"
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#ifdef HAVE_STRING_H
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#include <string.h>
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#endif
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#ifdef HAVE_UNISTD_H
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#include <unistd.h>
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#endif
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/* For Windows... */
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#ifdef HAVE_IO_H
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#include <io.h>
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#endif
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/* {Errors and Exceptional Conditions}
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*/
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/* Scheme interface to scm_error_scm. */
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void
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scm_error (SCM key, const char *subr, const char *message, SCM args, SCM rest)
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{
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scm_error_scm
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(key,
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(subr == NULL) ? SCM_BOOL_F : scm_from_locale_string (subr),
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(message == NULL) ? SCM_BOOL_F : scm_from_locale_string (message),
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args, rest);
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}
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/* All errors should pass through here. */
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SCM_DEFINE (scm_error_scm, "scm-error", 5, 0, 0,
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(SCM key, SCM subr, SCM message, SCM args, SCM data),
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"Raise an error with key @var{key}. @var{subr} can be a string\n"
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"naming the procedure associated with the error, or @code{#f}.\n"
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"@var{message} is the error message string, possibly containing\n"
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"@code{~S} and @code{~A} escapes. When an error is reported,\n"
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"these are replaced by formatting the corresponding members of\n"
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"@var{args}: @code{~A} (was @code{%s} in older versions of\n"
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"Guile) formats using @code{display} and @code{~S} (was\n"
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"@code{%S}) formats using @code{write}. @var{data} is a list or\n"
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"@code{#f} depending on @var{key}: if @var{key} is\n"
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"@code{system-error} then it should be a list containing the\n"
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"Unix @code{errno} value; If @var{key} is @code{signal} then it\n"
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"should be a list containing the Unix signal number; If\n"
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"@var{key} is @code{out-of-range} or @code{wrong-type-arg},\n"
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"it is a list containing the bad value; otherwise\n"
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"it will usually be @code{#f}.")
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#define FUNC_NAME s_scm_error_scm
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{
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if (scm_gc_running_p)
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{
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/* The error occured during GC --- abort */
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fprintf (stderr, "Guile: error during GC.\n"),
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abort ();
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}
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scm_ithrow (key, scm_list_4 (subr, message, args, data), 1);
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/* No return, but just in case: */
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fprintf (stderr, "Guile scm_ithrow returned!\n");
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exit (1);
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}
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#undef FUNC_NAME
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#ifdef __MINGW32__
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# include "win32-socket.h"
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# define SCM_I_STRERROR(err) \
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((err >= WSABASEERR) ? scm_i_socket_strerror (err) : strerror (err))
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# define SCM_I_ERRNO() \
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(errno ? errno : scm_i_socket_errno ())
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#else
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# define SCM_I_STRERROR(err) strerror (err)
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# define SCM_I_ERRNO() errno
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#endif /* __MINGW32__ */
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/* strerror may not be thread safe, for instance in glibc (version 2.3.2) an
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error number not among the known values results in a string like "Unknown
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error 9999" formed in a static buffer, which will be overwritten by a
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similar call in another thread. A test program running two threads with
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different unknown error numbers can trip this fairly quickly.
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Some systems don't do what glibc does, instead just giving a single
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"Unknown error" for unrecognised numbers. It doesn't seem worth trying
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to tell if that's the case, a mutex is reasonably fast, and strerror
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isn't needed very often.
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strerror_r (when available) could be used, it might be a touch faster
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than a frame and a mutex, though there's probably not much
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difference. */
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SCM_DEFINE (scm_strerror, "strerror", 1, 0, 0,
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(SCM err),
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"Return the Unix error message corresponding to @var{err}, which\n"
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"must be an integer value.")
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#define FUNC_NAME s_scm_strerror
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{
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SCM ret;
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scm_dynwind_begin (0);
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scm_i_dynwind_pthread_mutex_lock (&scm_i_misc_mutex);
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ret = scm_from_locale_string (SCM_I_STRERROR (scm_to_int (err)));
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scm_dynwind_end ();
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return ret;
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}
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#undef FUNC_NAME
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SCM_GLOBAL_SYMBOL (scm_system_error_key, "system-error");
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void
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scm_syserror (const char *subr)
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{
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SCM err = scm_from_int (SCM_I_ERRNO ());
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scm_error (scm_system_error_key,
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subr,
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"~A",
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scm_cons (scm_strerror (err), SCM_EOL),
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scm_cons (err, SCM_EOL));
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}
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void
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scm_syserror_msg (const char *subr, const char *message, SCM args, int eno)
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{
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scm_error (scm_system_error_key,
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subr,
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message,
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args,
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scm_cons (scm_from_int (eno), SCM_EOL));
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}
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SCM_GLOBAL_SYMBOL (scm_num_overflow_key, "numerical-overflow");
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void
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scm_num_overflow (const char *subr)
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{
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scm_error (scm_num_overflow_key,
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subr,
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"Numerical overflow",
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SCM_BOOL_F,
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SCM_BOOL_F);
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}
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SCM_GLOBAL_SYMBOL (scm_out_of_range_key, "out-of-range");
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void
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scm_out_of_range (const char *subr, SCM bad_value)
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{
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scm_error (scm_out_of_range_key,
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subr,
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"Value out of range: ~S",
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scm_list_1 (bad_value),
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scm_list_1 (bad_value));
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}
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void
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scm_out_of_range_pos (const char *subr, SCM bad_value, SCM pos)
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{
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scm_error (scm_out_of_range_key,
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subr,
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"Argument ~A out of range: ~S",
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scm_list_2 (pos, bad_value),
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scm_list_1 (bad_value));
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}
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SCM_GLOBAL_SYMBOL (scm_args_number_key, "wrong-number-of-args");
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void
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scm_wrong_num_args (SCM proc)
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{
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scm_error (scm_args_number_key,
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NULL,
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"Wrong number of arguments to ~A",
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scm_list_1 (proc),
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SCM_BOOL_F);
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}
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void
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scm_error_num_args_subr (const char *subr)
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{
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scm_error (scm_args_number_key,
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NULL,
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"Wrong number of arguments to ~A",
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scm_list_1 (scm_from_locale_string (subr)),
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SCM_BOOL_F);
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}
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SCM_GLOBAL_SYMBOL (scm_arg_type_key, "wrong-type-arg");
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void
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scm_wrong_type_arg (const char *subr, int pos, SCM bad_value)
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{
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scm_error (scm_arg_type_key,
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subr,
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(pos == 0) ? "Wrong type: ~S"
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: "Wrong type argument in position ~A: ~S",
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(pos == 0) ? scm_list_1 (bad_value)
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: scm_list_2 (scm_from_int (pos), bad_value),
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scm_list_1 (bad_value));
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}
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void
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scm_wrong_type_arg_msg (const char *subr, int pos, SCM bad_value, const char *szMessage)
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{
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SCM msg = scm_from_locale_string (szMessage);
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if (pos == 0)
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{
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scm_error (scm_arg_type_key,
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subr, "Wrong type (expecting ~A): ~S",
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scm_list_2 (msg, bad_value),
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scm_list_1 (bad_value));
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}
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else
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{
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scm_error (scm_arg_type_key,
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subr,
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"Wrong type argument in position ~A (expecting ~A): ~S",
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scm_list_3 (scm_from_int (pos), msg, bad_value),
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scm_list_1 (bad_value));
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}
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}
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SCM_GLOBAL_SYMBOL (scm_memory_alloc_key, "memory-allocation-error");
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void
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scm_memory_error (const char *subr)
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{
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fprintf (stderr, "FATAL: memory error in %s\n", subr);
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abort ();
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}
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SCM_GLOBAL_SYMBOL (scm_misc_error_key, "misc-error");
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void
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scm_misc_error (const char *subr, const char *message, SCM args)
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{
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scm_error (scm_misc_error_key, subr, message, args, SCM_BOOL_F);
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}
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void
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scm_init_error ()
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{
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#include "libguile/cpp_err_symbols.c"
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#include "libguile/error.x"
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}
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/*
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Local Variables:
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c-file-style: "gnu"
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End:
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*/
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