/* Copyright (C) 1995,1996,1997,1998,2000,2001 Free Software Foundation, Inc. * * 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 2, 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 software; see the file COPYING. If not, write to * the Free Software Foundation, Inc., 59 Temple Place, Suite 330, * Boston, MA 02111-1307 USA * * As a special exception, the Free Software Foundation gives permission * for additional uses of the text contained in its release of GUILE. * * The exception is that, if you link the GUILE library with other files * to produce an executable, this does not by itself cause the * resulting executable to be covered by the GNU General Public License. * Your use of that executable is in no way restricted on account of * linking the GUILE library code into it. * * This exception does not however invalidate any other reasons why * the executable file might be covered by the GNU General Public License. * * This exception applies only to the code released by the * Free Software Foundation under the name GUILE. If you copy * code from other Free Software Foundation releases into a copy of * GUILE, as the General Public License permits, the exception does * not apply to the code that you add in this way. To avoid misleading * anyone as to the status of such modified files, you must delete * this exception notice from them. * * If you write modifications of your own for GUILE, it is your choice * whether to permit this exception to apply to your modifications. * If you do not wish that, delete this exception notice. */ #include #include #include "libguile/_scm.h" #include "libguile/pairs.h" #include "libguile/strings.h" #include "libguile/throw.h" #include "libguile/validate.h" #include "libguile/error.h" #ifdef HAVE_STRING_H #include #endif #ifdef HAVE_UNISTD_H #include #endif /* For Windows... */ #ifdef HAVE_IO_H #include #endif /* {Errors and Exceptional Conditions} */ /* All errors should pass through here. */ void scm_error (SCM key, const char *subr, const char *message, SCM args, SCM rest) { SCM arg_list; if (scm_gc_running_p) { /* The error occured during GC --- abort */ fprintf (stderr, "Error in %s during GC: %s\n", subr ? subr : "unknown function", message ? message : ""); abort (); } arg_list = scm_list_4 (subr ? scm_makfrom0str (subr) : SCM_BOOL_F, message ? scm_makfrom0str (message) : SCM_BOOL_F, args, rest); scm_ithrow (key, arg_list, 1); /* No return, but just in case: */ { const char msg[] = "guile:scm_error:scm_ithrow returned!\n"; write (2, msg, (sizeof msg) - 1); } exit (1); } /* Scheme interface to scm_error. */ SCM_DEFINE (scm_error_scm, "scm-error", 5, 0, 0, (SCM key, SCM subr, SCM message, SCM args, SCM data), "Raise an error with key @var{key}. @var{subr} can be a string\n" "naming the procedure associated with the error, or @code{#f}.\n" "@var{message} is the error message string, possibly containing\n" "@code{~S} and @code{~A} escapes. When an error is reported,\n" "these are replaced by formatting the corresponding members of\n" "@var{args}: @code{~A} (was @code{%s} in older versions of\n" "Guile) formats using @code{display} and @code{~S} (was\n" "@code{%S}) formats using @code{write}. @var{data} is a list or\n" "@code{#f} depending on @var{key}: if @var{key} is\n" "@code{system-error} then it should be a list containing the\n" "Unix @code{errno} value; If @var{key} is @code{signal} then it\n" "should be a list containing the Unix signal number; otherwise\n" "it will usually be @code{#f}.") #define FUNC_NAME s_scm_error_scm { char *szSubr; char *szMessage; SCM_VALIDATE_SYMBOL (1, key); if (SCM_FALSEP (subr)) { szSubr = NULL; } else if (SCM_SYMBOLP (subr)) { szSubr = SCM_SYMBOL_CHARS (subr); } else { SCM_VALIDATE_STRING (2, subr); SCM_STRING_COERCE_0TERMINATION_X (subr); szSubr = SCM_STRING_CHARS (subr); } if (SCM_FALSEP (message)) { szMessage = NULL; } else { SCM_VALIDATE_STRING (2, message); SCM_STRING_COERCE_0TERMINATION_X (message); szMessage = SCM_STRING_CHARS (message); } scm_error (key, szSubr, szMessage, args, data); /* not reached. */ } #undef FUNC_NAME SCM_DEFINE (scm_strerror, "strerror", 1, 0, 0, (SCM err), "Return the Unix error message corresponding to @var{err}, which\n" "must be an integer value.") #define FUNC_NAME s_scm_strerror { SCM_VALIDATE_INUM (1,err); return scm_makfrom0str (strerror (SCM_INUM (err))); } #undef FUNC_NAME SCM_GLOBAL_SYMBOL (scm_system_error_key, "system-error"); void scm_syserror (const char *subr) { int save_errno = errno; scm_error (scm_system_error_key, subr, "~A", scm_cons (scm_makfrom0str (strerror (save_errno)), SCM_EOL), scm_cons (SCM_MAKINUM (save_errno), SCM_EOL)); } void scm_syserror_msg (const char *subr, const char *message, SCM args, int eno) { scm_error (scm_system_error_key, subr, message, args, scm_cons (SCM_MAKINUM (eno), SCM_EOL)); } SCM_GLOBAL_SYMBOL (scm_num_overflow_key, "numerical-overflow"); void scm_num_overflow (const char *subr) { scm_error (scm_num_overflow_key, subr, "Numerical overflow", SCM_BOOL_F, SCM_BOOL_F); } SCM_GLOBAL_SYMBOL (scm_out_of_range_key, "out-of-range"); void scm_out_of_range (const char *subr, SCM bad_value) { scm_error (scm_out_of_range_key, subr, "Argument out of range: ~S", scm_list_1 (bad_value), SCM_BOOL_F); } void scm_out_of_range_pos (const char *subr, SCM bad_value, SCM pos) { scm_error (scm_out_of_range_key, subr, "Argument ~S out of range: ~S", scm_list_2 (pos,bad_value), SCM_BOOL_F); } SCM_GLOBAL_SYMBOL (scm_args_number_key, "wrong-number-of-args"); void scm_wrong_num_args (SCM proc) { scm_error (scm_args_number_key, NULL, "Wrong number of arguments to ~A", scm_list_1 (proc), SCM_BOOL_F); } void scm_error_num_args_subr (const char *subr) { scm_error (scm_args_number_key, NULL, "Wrong number of arguments to ~A", scm_list_1 (scm_makfrom0str (subr)), SCM_BOOL_F); } SCM_GLOBAL_SYMBOL (scm_arg_type_key, "wrong-type-arg"); void scm_wrong_type_arg (const char *subr, int pos, SCM bad_value) { scm_error (scm_arg_type_key, subr, (pos == 0) ? "Wrong type argument: ~S" : "Wrong type argument in position ~A: ~S", (pos == 0) ? scm_list_1 (bad_value) : scm_list_2 (SCM_MAKINUM (pos), bad_value), SCM_BOOL_F); } void scm_wrong_type_arg_msg (const char *subr, int pos, SCM bad_value, const char *szMessage) { SCM msg = scm_makfrom0str(szMessage); if (pos == 0) { scm_error (scm_arg_type_key, subr, "Wrong type argument (expecting ~A): ~S", scm_list_2 (msg, bad_value), SCM_BOOL_F); } else { scm_error (scm_arg_type_key, subr, "Wrong type argument in position ~A (expecting ~A): ~S", scm_list_3 (SCM_MAKINUM (pos), msg, bad_value), SCM_BOOL_F); } } SCM_GLOBAL_SYMBOL (scm_memory_alloc_key, "memory-allocation-error"); void scm_memory_error (const char *subr) { scm_error (scm_memory_alloc_key, subr, "Memory allocation error", SCM_BOOL_F, SCM_BOOL_F); } SCM_GLOBAL_SYMBOL (scm_misc_error_key, "misc-error"); void scm_misc_error (const char *subr, const char *message, SCM args) { scm_error (scm_misc_error_key, subr, message, args, SCM_BOOL_F); } #if (SCM_DEBUG_DEPRECATED == 0) SCM scm_wta (SCM arg, const char *pos, const char *s_subr) { if (!s_subr || !*s_subr) s_subr = NULL; if ((~0x1fL) & (long) pos) { /* error string supplied. */ scm_misc_error (s_subr, pos, scm_list_1 (arg)); } else { /* numerical error code. */ scm_t_bits error = (scm_t_bits) pos; switch (error) { case SCM_ARGn: scm_wrong_type_arg (s_subr, 0, arg); case SCM_ARG1: scm_wrong_type_arg (s_subr, 1, arg); case SCM_ARG2: scm_wrong_type_arg (s_subr, 2, arg); case SCM_ARG3: scm_wrong_type_arg (s_subr, 3, arg); case SCM_ARG4: scm_wrong_type_arg (s_subr, 4, arg); case SCM_ARG5: scm_wrong_type_arg (s_subr, 5, arg); case SCM_ARG6: scm_wrong_type_arg (s_subr, 6, arg); case SCM_ARG7: scm_wrong_type_arg (s_subr, 7, arg); case SCM_WNA: scm_wrong_num_args (arg); case SCM_OUTOFRANGE: scm_out_of_range (s_subr, arg); case SCM_NALLOC: scm_memory_error (s_subr); default: /* this shouldn't happen. */ scm_misc_error (s_subr, "Unknown error", SCM_EOL); } } return SCM_UNSPECIFIED; } #endif /* SCM_DEBUG_DEPRECATED == 0 */ void scm_init_error () { #include "libguile/cpp_err_symbols.c" #include "libguile/error.x" } /* Local Variables: c-file-style: "gnu" End: */