src/complain.h

   1 /* Declaration for error-reporting function for Bison.
   2
   3    Copyright (C) 2000-2002, 2006, 2009-2013 Free Software Foundation,
   4    Inc.
   5
   6    This program is free software: you can redistribute it and/or modify
   7    it under the terms of the GNU General Public License as published by
   8    the Free Software Foundation, either version 3 of the License, or
   9    (at your option) any later version.
  10
  11    This program is distributed in the hope that it will be useful,
  12    but WITHOUT ANY WARRANTY; without even the implied warranty of
  13    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14    GNU General Public License for more details.
  15
  16    You should have received a copy of the GNU General Public License
  17    along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
  18
  19 #ifndef COMPLAIN_H_
  20 # define COMPLAIN_H_ 1
  21
  22 # include "location.h"
  23
  24 # ifdef __cplusplus
  25 extern "C" {
  26 # endif
  27
  28 /* Sub-messages indent. */
  29 #define SUB_INDENT (4)
  30
  31 /** Record that a warning is about to be issued, and treat it as an
  32     error if <tt>warnings_flag & warnings_error</tt>.  This is exported
  33     only for the sake of Yacc-compatible conflict reports in conflicts.c.
  34     All other warnings should be implemented in complain.c and should use
  35     the normal warning format.  */
  36 void set_warning_issued (void);
  37
  38 /** Informative messages, but we proceed.  Report iff
  39     <tt>warnings_flag & warnings_other</tt>.  */
  40
  41 void warn (char const *format, ...)
  42   __attribute__ ((__format__ (__printf__, 1, 2)));
  43
  44 void warn_at (location loc, char const *format, ...)
  45   __attribute__ ((__format__ (__printf__, 2, 3)));
  46
  47 /* Generate a message aligned by an indent.
  48    When *indent == 0, assign message's indent to *indent,
  49    When *indent > 0, align the message by *indent value. */
  50 void warn_at_indent (location loc, unsigned *indent,
  51                      char const *format, ...)
  52   __attribute__ ((__format__ (__printf__, 3, 4)));
  53
  54 /** An error, but we continue and die later.  */
  55
  56 void complain (char const *format, ...)
  57   __attribute__ ((__format__ (__printf__, 1, 2)));
  58
  59 void complain_at (location loc, char const *format, ...)
  60   __attribute__ ((__format__ (__printf__, 2, 3)));
  61
  62 /* Generate a message aligned by an indent.
  63    When *indent == 0, assign message's indent to *indent,
  64    When *indent > 0, align the message by *indent value. */
  65 void complain_at_indent (location loc, unsigned *indent,
  66                          char const *format, ...)
  67   __attribute__ ((__format__ (__printf__, 3, 4)));
  68
  69 /** An incompatibility with POSIX Yacc: mapped either to warn* or
  70     complain* depending on yacc_flag. */
  71
  72 void yacc_at (location loc, char const *format, ...)
  73   __attribute__ ((__format__ (__printf__, 2, 3)));
  74
  75 /** A midrule-value warning.  Report iff
  76     <tt>warnings_flag & warnings_midrule_values</tt>.  */
  77
  78 void midrule_value_at (location loc, char const *format, ...)
  79   __attribute__ ((__format__ (__printf__, 2, 3)));
  80
  81 /** A fatal error, causing immediate exit.  */
  82
  83 void fatal (char const *format, ...)
  84   __attribute__ ((__noreturn__, __format__ (__printf__, 1, 2)));
  85
  86 void fatal_at (location loc, char const *format, ...)
  87   __attribute__ ((__noreturn__, __format__ (__printf__, 2, 3)));
  88
  89 /** Whether an error was reported.  */
  90 extern bool complaint_issued;
  91
  92 # ifdef __cplusplus
  93 }
  94 # endif
  95
  96 #endif /* !COMPLAIN_H_ */