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34d19ef643
* *.c: add space after commas everywhere. * *.c: use SCM_VECTOR_SET everywhere, where a vector is written. Document cases where SCM_WRITABLE_VELTS() is used. * vectors.h (SCM_VELTS): prepare for write barrier, and let SCM_VELTS() return a const pointer (SCM_VECTOR_SET): add macro. * autogen.sh (mscripts): find and check version number of autoconf. Complain if 2.53 is not found.
317 lines
8.5 KiB
C
317 lines
8.5 KiB
C
/* Copyright (C) 1995,1996,1997,1998,2000,2001 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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#include <stdio.h>
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#include <errno.h>
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#include "libguile/_scm.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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/* 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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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, "Error in %s during GC: %s\n",
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subr ? subr : "unknown function",
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message ? message : "<empty message>");
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abort ();
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}
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arg_list = scm_list_4 (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_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 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; 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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char *szSubr;
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char *szMessage;
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SCM_VALIDATE_SYMBOL (1, key);
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if (SCM_FALSEP (subr))
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{
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szSubr = NULL;
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}
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else if (SCM_SYMBOLP (subr))
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{
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szSubr = SCM_SYMBOL_CHARS (subr);
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}
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else
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{
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SCM_VALIDATE_STRING (2, subr);
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szSubr = SCM_STRING_CHARS (subr);
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}
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if (SCM_FALSEP (message))
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{
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szMessage = NULL;
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}
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else
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{
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SCM_VALIDATE_STRING (2, message);
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szMessage = SCM_STRING_CHARS (message);
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}
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scm_error (key, szSubr, szMessage, args, data);
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/* not reached. */
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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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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_VALIDATE_INUM (1, err);
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return scm_makfrom0str (SCM_I_STRERROR (SCM_INUM (err)));
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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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int save_errno = 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_makfrom0str (SCM_I_STRERROR (save_errno)), SCM_EOL),
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scm_cons (SCM_MAKINUM (save_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_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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"Argument out of range: ~S",
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scm_list_1 (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_list_2 (pos, bad_value),
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SCM_BOOL_F);
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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_makfrom0str (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 argument: ~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_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_list_2 (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_list_3 (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_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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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_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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