X-Git-Url: https://git.saurik.com/bison.git/blobdiff_plain/0fb669f9d648dfdd7a39478a6b658511455ae966..686e83e396696572171fad32f440cc279ab82a75:/src/complain.c diff --git a/src/complain.c b/src/complain.c index 4769df5c..3b0041e8 100644 --- a/src/complain.c +++ b/src/complain.c @@ -1,10 +1,12 @@ /* Declaration for error-reporting function for Bison. - Copyright (C) 2000, 2001, 2002, 2004 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. + Copyright (C) 2000-2002, 2004-2006, 2009-2011 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 3 of the License, 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 @@ -12,67 +14,122 @@ GNU General Public License for more details. You should have received a copy of the GNU General Public License - along with this program; if not, write to the Free Software - Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, - USA. */ + along with this program. If not, see . */ /* Based on error.c and error.h, written by David MacKenzie . */ +#include #include "system.h" #include #include "complain.h" #include "files.h" +#include "getargs.h" -/* The calling program should define program_name and set it to the - name of the executing program. */ -extern char *program_name; - -/* This variable is set each time `warn' is called. */ -bool warning_issued; - -/* This variable is set each time `complain' is called. */ bool complaint_issued; +static unsigned *indent_ptr = 0; + +/** Report an error message. + * + * \param loc the location, defaulting to the current file, + * or the program name. + * \param prefix put before the message (e.g., "warning"). + * \param message the error message, a printf format string. Iff it + * ends with ": ", then no trailing newline is printed, + * and the caller should print the remaining + * newline-terminated message to stderr. + * \param args the arguments of the format string. + */ +static +void +error_message (location *loc, + const char *prefix, + const char *message, va_list args) +{ + unsigned pos = 0; + + if (loc) + pos += location_print (stderr, *loc); + else + pos += fprintf(stderr, "%s", current_file ? current_file : program_name); + pos += fprintf(stderr, ": "); + + if (indent_ptr) + { + if (!*indent_ptr) + *indent_ptr = pos; + else if (*indent_ptr > pos) + fprintf (stderr, "%*s", *indent_ptr - pos, ""); + indent_ptr = 0; + } + + if (prefix) + fprintf (stderr, "%s: ", prefix); + + vfprintf (stderr, message, args); + { + size_t l = strlen (message); + if (l < 2 || message[l-2] != ':' || message[l-1] != ' ') { + putc ('\n', stderr); + fflush (stderr); + } + } +} + +/** Wrap error_message() with varargs handling. */ +#define ERROR_MESSAGE(Loc, Prefix, Message) \ +{ \ + va_list args; \ + va_start (args, Message); \ + error_message (Loc, Prefix, Message, args); \ + va_end (args); \ +} + + /*--------------------------------. | Report a warning, and proceed. | `--------------------------------*/ +static void +set_warning_issued (void) +{ + static bool warning_issued = false; + if (!warning_issued && (warnings_flag & warnings_error)) + { + fprintf (stderr, "%s: warnings being treated as errors\n", program_name); + complaint_issued = true; + } + warning_issued = true; +} + void warn_at (location loc, const char *message, ...) { - va_list args; - - location_print (stderr, loc); - fputs (": ", stderr); - fputs (_("warning: "), stderr); - - va_start (args, message); - vfprintf (stderr, message, args); - va_end (args); + set_warning_issued (); + ERROR_MESSAGE (&loc, _("warning"), message); +} - warning_issued = true; - putc ('\n', stderr); +void +warn_at_indent (location loc, unsigned *indent, + const char *message, ...) +{ + set_warning_issued (); + indent_ptr = indent; + ERROR_MESSAGE (&loc, _("warning"), message); } void warn (const char *message, ...) { - va_list args; - - fprintf (stderr, "%s: %s", current_file ? current_file : program_name, _("warning: ")); + set_warning_issued (); + ERROR_MESSAGE (NULL, _("warning"), message); +} - va_start (args, message); - vfprintf (stderr, message, args); - va_end (args); - warning_issued = true; - putc ('\n', stderr); -} - /*-----------------------------------------------------------. | An error has occurred, but we can proceed, and die later. | `-----------------------------------------------------------*/ @@ -80,34 +137,48 @@ warn (const char *message, ...) void complain_at (location loc, const char *message, ...) { - va_list args; - - location_print (stderr, loc); - fputs (": ", stderr); - - va_start (args, message); - vfprintf (stderr, message, args); - va_end (args); + ERROR_MESSAGE (&loc, NULL, message); + complaint_issued = true; +} +void +complain_at_indent (location loc, unsigned *indent, + const char *message, ...) +{ + indent_ptr = indent; + ERROR_MESSAGE (&loc, NULL, message); complaint_issued = true; - putc ('\n', stderr); } void complain (const char *message, ...) { - va_list args; + ERROR_MESSAGE (NULL, NULL, message); + complaint_issued = true; +} - fprintf (stderr, "%s: ", current_file ? current_file : program_name); - va_start (args, message); - vfprintf (stderr, message, args); - va_end (args); +/*--------------------------------------------------------------. +| An incompatibility with POSIX Yacc: mapped either to warn* or | +| complain* depending on yacc_flag. | +`--------------------------------------------------------------*/ - complaint_issued = true; - putc ('\n', stderr); +void +yacc_at (location loc, const char *message, ...) +{ + if (yacc_flag) + { + ERROR_MESSAGE (&loc, NULL, message); + complaint_issued = true; + } + else if (warnings_flag & warnings_yacc) + { + set_warning_issued (); + ERROR_MESSAGE (&loc, _("warning"), message); + } } - + + /*-------------------------------------------------. | A severe error has occurred, we cannot proceed. | `-------------------------------------------------*/ @@ -115,31 +186,13 @@ complain (const char *message, ...) void fatal_at (location loc, const char *message, ...) { - va_list args; - - location_print (stderr, loc); - fputs (": ", stderr); - fputs (_("fatal error: "), stderr); - - va_start (args, message); - vfprintf (stderr, message, args); - va_end (args); - putc ('\n', stderr); + ERROR_MESSAGE (&loc, _("fatal error"), message); exit (EXIT_FAILURE); } void fatal (const char *message, ...) { - va_list args; - - fprintf (stderr, "%s: ", current_file ? current_file : program_name); - - fputs (_("fatal error: "), stderr); - - va_start (args, message); - vfprintf (stderr, message, args); - va_end (args); - putc ('\n', stderr); + ERROR_MESSAGE (NULL, _("fatal error"), message); exit (EXIT_FAILURE); }