nsz Git - cparser/blob - diagnostic.c

   1 /*
   2  * This file is part of cparser.
   3  * Copyright (C) 2007-2008 Matthias Braun <matze@braunis.de>
   4  *
   5  * This program is free software; you can redistribute it and/or
   6  * modify it under the terms of the GNU General Public License
   7  * as published by the Free Software Foundation; either version 2
   8  * of the License, or (at your option) any later version.
   9  *
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  * GNU General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU General Public License
  16  * along with this program; if not, write to the Free Software
  17  * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
  18  * 02111-1307, USA.
  19  */
  20 #include <stdarg.h>
  21 #include <stdio.h>
  22
  23 #include "adt/error.h"
  24 #include "ast.h"
  25 #include "diagnostic.h"
  26 #include "token_t.h"
  27 #include "type.h"
  28 #include "warning.h"
  29
  30 /** Number of occurred diagnostics. */
  31 unsigned diagnostic_count = 0;
  32 /** Number of occurred errors. */
  33 unsigned error_count      = 0;
  34 /** Number of occurred warnings. */
  35 unsigned warning_count    = 0;
  36 /** true if warnings should be inhibited */
  37 bool inhibit_all_warnings = false;
  38
  39 /**
  40  * Issue a diagnostic message.
  41  */
  42 static void diagnosticvf(const char *const fmt, va_list ap)
  43 {
  44         for (const char* f = fmt; *f != '\0'; ++f) {
  45                 if (*f == '%') {
  46                         ++f;
  47
  48                         bool extended = false;
  49                         if (*f == '#') {
  50                                 extended = true;
  51                                 ++f;
  52                         }
  53
  54                         switch (*f) {
  55                                 case '%':
  56                                         fputc(*f, stderr);
  57                                         break;
  58
  59                                 case 'C': {
  60                                         const wint_t val = va_arg(ap, wint_t);
  61                                         fputwc(val, stderr);
  62                                         break;
  63                                 }
  64
  65                                 case 'c': {
  66                                         const unsigned char val = (unsigned char) va_arg(ap, int);
  67                                         fputc(val, stderr);
  68                                         break;
  69                                 }
  70
  71                                 case 'd': {
  72                                         const int val = va_arg(ap, int);
  73                                         fprintf(stderr, "%d", val);
  74                                         break;
  75                                 }
  76
  77                                 case 's': {
  78                                         const char* const str = va_arg(ap, const char*);
  79                                         fputs(str, stderr);
  80                                         break;
  81                                 }
  82
  83                                 case 'Y': {
  84                                         const symbol_t *const symbol = va_arg(ap, const symbol_t*);
  85                                         fputs(symbol->string, stderr);
  86                                         break;
  87                                 }
  88
  89                                 case 'E': {
  90                                         const expression_t* const expr = va_arg(ap, const expression_t*);
  91                                         print_expression(expr);
  92                                         break;
  93                                 }
  94
  95                                 case 'Q': {
  96                                         const unsigned qualifiers = va_arg(ap, unsigned);
  97                                         print_type_qualifiers(qualifiers);
  98                                         break;
  99                                 }
 100
 101                                 case 'T': {
 102                                         const type_t* const type = va_arg(ap, const type_t*);
 103                                         const symbol_t*     sym  = NULL;
 104                                         if (extended) {
 105                                                 sym = va_arg(ap, const symbol_t*);
 106                                         }
 107                                         print_type_ext(type, sym, NULL);
 108                                         break;
 109                                 }
 110
 111                                 case 'K': {
 112                                         const token_t* const token = va_arg(ap, const token_t*);
 113                                         print_token(stderr, token);
 114                                         break;
 115                                 }
 116
 117                                 case 'k': {
 118                                         if (extended) {
 119                                                 bool              first     = false;
 120                                                 va_list*          toks      = va_arg(ap, va_list*);
 121                                                 const char* const delimiter = va_arg(ap, const char*);
 122                                                 for (;;) {
 123                                                         const token_type_t tok = va_arg(*toks, token_type_t);
 124                                                         if (tok == 0)
 125                                                                 break;
 126                                                         if (first) {
 127                                                                 first = false;
 128                                                         } else {
 129                                                                 fputs(delimiter, stderr);
 130                                                         }
 131                                                         print_token_type(stderr, tok);
 132                                                 }
 133                                         } else {
 134                                                 const token_type_t token = va_arg(ap, token_type_t);
 135                                                 print_token_type(stderr, token);
 136                                         }
 137                                         break;
 138                                 }
 139
 140                                 default:
 141                                         panic("unknown format specifier");
 142                         }
 143                 } else {
 144                         fputc(*f, stderr);
 145                 }
 146         }
 147 }
 148
 149 void diagnosticf(const char *const fmt, ...)
 150 {
 151         va_list ap;
 152         va_start(ap, fmt);
 153         ++diagnostic_count;
 154         diagnosticvf(fmt, ap);
 155         va_end(ap);
 156 }
 157
 158 static void errorvf(const source_position_t pos,
 159                     const char *const fmt, va_list ap)
 160 {
 161         fprintf(stderr, "%s:%u: error: ", pos.input_name, pos.linenr);
 162         ++error_count;
 163         diagnosticvf(fmt, ap);
 164         fputc('\n', stderr);
 165
 166         if (warning.fatal_errors)
 167                 exit(EXIT_FAILURE);
 168 }
 169
 170 void errorf(const source_position_t pos, const char *const fmt, ...)
 171 {
 172         va_list ap;
 173         va_start(ap, fmt);
 174         errorvf(pos, fmt, ap);
 175         va_end(ap);
 176 }
 177
 178 static void warningvf(const source_position_t pos,
 179                       const char *const fmt, va_list ap)
 180 {
 181         fprintf(stderr, "%s:%u: warning: ", pos.input_name, pos.linenr);
 182         ++warning_count;
 183         diagnosticvf(fmt, ap);
 184         fputc('\n', stderr);
 185 }
 186
 187 void warningf(const source_position_t pos, const char *const fmt, ...)
 188 {
 189         if (inhibit_all_warnings)
 190                 return;
 191
 192         va_list ap;
 193         va_start(ap, fmt);
 194         if (warning.s_are_errors) {
 195                 errorvf(pos, fmt, ap);
 196         } else {
 197                 warningvf(pos, fmt, ap);
 198         }
 199         va_end(ap);
 200 }