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https://git.savannah.gnu.org/git/guile.git
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320 lines
8.8 KiB
C
320 lines
8.8 KiB
C
/* Copyright (C) 1995,1996,1997,1998 Free Software Foundation, Inc.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2, or (at your option)
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* any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this software; see the file COPYING. If not, write to
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* the Free Software Foundation, Inc., 59 Temple Place, Suite 330,
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* Boston, MA 02111-1307 USA
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*
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* As a special exception, the Free Software Foundation gives permission
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* for additional uses of the text contained in its release of GUILE.
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*
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* The exception is that, if you link the GUILE library with other files
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* to produce an executable, this does not by itself cause the
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* resulting executable to be covered by the GNU General Public License.
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* Your use of that executable is in no way restricted on account of
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* linking the GUILE library code into it.
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*
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* This exception does not however invalidate any other reasons why
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* the executable file might be covered by the GNU General Public License.
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*
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* This exception applies only to the code released by the
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* Free Software Foundation under the name GUILE. If you copy
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* code from other Free Software Foundation releases into a copy of
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* GUILE, as the General Public License permits, the exception does
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* not apply to the code that you add in this way. To avoid misleading
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* anyone as to the status of such modified files, you must delete
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* this exception notice from them.
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*
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* If you write modifications of your own for GUILE, it is your choice
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* whether to permit this exception to apply to your modifications.
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* If you do not wish that, delete this exception notice. */
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/* Software engineering face-lift by Greg J. Badros, 11-Dec-1999,
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gjb@cs.washington.edu, http://www.cs.washington.edu/homes/gjb */
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#include <stdio.h>
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#include "_scm.h"
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#include "pairs.h"
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#include "throw.h"
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#include "validate.h"
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#include "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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/* {Errors and Exceptional Conditions}
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*/
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extern int errno;
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/* All errors should pass through here. */
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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 arg_list;
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arg_list = scm_listify (subr ? scm_makfrom0str (subr) : SCM_BOOL_F,
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message ? scm_makfrom0str (message) : SCM_BOOL_F,
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args,
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rest,
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SCM_UNDEFINED);
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scm_ithrow (key, arg_list, 1);
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/* No return, but just in case: */
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{
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const char msg[] = "guile:scm_error:scm_ithrow returned!\n";
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write (2, msg, (sizeof msg) - 1);
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}
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exit (1);
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}
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/* Scheme interface to scm_error. */
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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 rest),
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"Raise an error with key @var{key}. @var{subr} can be a string naming\n"
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"the procedure associated with the error, or @code{#f}. @var{message}\n"
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"is the error message string, possibly containing @code{~S} and @code{~A}\n"
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"escapes. When an error is reported, these are replaced by formating the\n"
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"corresponding members of @var{args}: @code{~A} (was @code{%s}) formats using @code{display}\n"
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"and @code(~S) (was @code{%S}) formats using @code{write}. @var{data} is a\n"
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"list or @code{#f} depending on @var{key}: if @var{key} is\n"
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"@code{system-error} then it should be a list\n"
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"containing the Unix @code{errno} value; If @var{key} is @code{signal} then\n"
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"it should be a list containing the Unix signal number; otherwise it\n"
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"will usually be @code{#f}.")
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#define FUNC_NAME s_scm_error_scm
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{
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char *szSubr;
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char *szMessage;
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SCM_VALIDATE_SYMBOL (1,key);
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SCM_VALIDATE_NULLORROSTRING_COPY (2,subr,szSubr);
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SCM_VALIDATE_NULLORROSTRING_COPY (3,message,szMessage);
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SCM_COERCE_SUBSTR (message);
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scm_error (key, szSubr, szMessage, args, rest);
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/* not reached. */
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}
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#undef FUNC_NAME
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SCM_DEFINE (scm_strerror, "strerror", 1, 0, 0,
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(SCM err),
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"Returns the Unix error message corresponding to @var{errno}, an integer.")
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#define FUNC_NAME s_scm_strerror
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{
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SCM_VALIDATE_INUM (1,err);
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return scm_makfrom0str (strerror (SCM_INUM (err)));
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}
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#undef FUNC_NAME
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SCM_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_error (scm_system_error_key,
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subr,
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"~A",
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scm_cons (scm_makfrom0str (strerror (errno)), SCM_EOL),
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scm_cons (SCM_MAKINUM (errno), 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_MAKINUM (eno), SCM_EOL));
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}
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/* scm_sysmissing is no longer used in libguile. it can probably be
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removed after a release or two. there's a comment in NEWS about it
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(2000-01-09). */
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void
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scm_sysmissing (const char *subr)
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{
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#ifdef ENOSYS
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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_makfrom0str (strerror (ENOSYS)), SCM_EOL),
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scm_cons (SCM_MAKINUM (ENOSYS), SCM_EOL));
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#else
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scm_error (scm_system_error_key,
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subr,
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"Missing function",
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SCM_BOOL_F,
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scm_cons (SCM_MAKINUM (0), SCM_EOL));
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#endif
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}
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SCM_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_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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"Argument out of range: ~S",
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SCM_LIST1(bad_value),
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SCM_BOOL_F);
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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 ~S out of range: ~S",
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SCM_LIST2(pos,bad_value),
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SCM_BOOL_F);
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}
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SCM_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_LIST1(proc),
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SCM_BOOL_F);
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}
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SCM_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 argument: ~S"
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: "Wrong type argument in position ~A: ~S",
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(pos == 0) ? SCM_LIST1(bad_value)
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: SCM_LIST2(SCM_MAKINUM(pos), bad_value),
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SCM_BOOL_F);
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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_makfrom0str(szMessage);
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if (pos == 0) {
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scm_error (scm_arg_type_key,
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subr, "Wrong type argument (expecting ~A): ~S",
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SCM_LIST2(msg,bad_value),
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SCM_BOOL_F);
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} else {
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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_LIST3(SCM_MAKINUM(pos),msg,bad_value),
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SCM_BOOL_F);
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}
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}
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SCM_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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scm_error (scm_memory_alloc_key,
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subr,
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"Memory allocation error",
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SCM_BOOL_F,
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SCM_BOOL_F);
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}
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SCM_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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/* implements the SCM_ASSERT interface. */
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SCM
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scm_wta (SCM arg, const char *pos, const char *s_subr)
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{
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if (!s_subr || !*s_subr)
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s_subr = NULL;
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if ((~0x1fL) & (long) pos)
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{
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/* error string supplied. */
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scm_misc_error (s_subr, pos, SCM_LIST1 (arg));
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}
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else
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{
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/* numerical error code. */
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int error = (long) pos;
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switch (error)
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{
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case SCM_ARGn:
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scm_wrong_type_arg (s_subr, 0, arg);
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case SCM_ARG1:
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scm_wrong_type_arg (s_subr, 1, arg);
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case SCM_ARG2:
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scm_wrong_type_arg (s_subr, 2, arg);
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case SCM_ARG3:
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scm_wrong_type_arg (s_subr, 3, arg);
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case SCM_ARG4:
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scm_wrong_type_arg (s_subr, 4, arg);
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case SCM_ARG5:
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scm_wrong_type_arg (s_subr, 5, arg);
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case SCM_ARG6:
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scm_wrong_type_arg (s_subr, 6, arg);
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case SCM_ARG7:
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scm_wrong_type_arg (s_subr, 7, arg);
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case SCM_WNA:
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scm_wrong_num_args (arg);
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case SCM_OUTOFRANGE:
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scm_out_of_range (s_subr, arg);
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case SCM_NALLOC:
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scm_memory_error (s_subr);
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default:
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/* this shouldn't happen. */
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scm_misc_error (s_subr, "Unknown error", SCM_EOL);
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}
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}
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return SCM_UNSPECIFIED;
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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 "cpp_err_symbols.c"
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#include "error.x"
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}
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