nsz Git - cparser/blob - diagnostic.c

   1 #include <stdarg.h>
   2 #include <stdio.h>
   3
   4 #include "adt/error.h"
   5 #include "ast.h"
   6 #include "diagnostic.h"
   7 #include "token_t.h"
   8 #include "type.h"
   9
  10
  11 //#define ABORT_ON_ERROR
  12
  13 /** Number of occurred diagnostics. */
  14 unsigned diagnostic_count = 0;
  15 /** Number of occurred errors. */
  16 unsigned error_count      = 0;
  17 /** Number of occurred warnings. */
  18 unsigned warning_count    = 0;
  19
  20 /**
  21  * Issue a diagnostic message.
  22  */
  23 static void diagnosticvf(const char *const fmt, va_list ap)
  24 {
  25         for (const char* f = fmt; *f != '\0'; ++f) {
  26                 if (*f == '%') {
  27                         ++f;
  28
  29                         bool extended = false;
  30                         if (*f == '#') {
  31                                 extended = true;
  32                                 ++f;
  33                         }
  34
  35                         switch (*f) {
  36                                 case '%':
  37                                         fputc(*f, stderr);
  38                                         break;
  39
  40                                 case 'C': {
  41                                         const wint_t val = va_arg(ap, wint_t);
  42                                         fputwc(val, stderr);
  43                                         break;
  44                                 }
  45
  46                                 case 'c': {
  47                                         const unsigned char val = va_arg(ap, int);
  48                                         fputc(val, stderr);
  49                                         break;
  50                                 }
  51
  52                                 case 'd': {
  53                                         const int val = va_arg(ap, int);
  54                                         fprintf(stderr, "%d", val);
  55                                         break;
  56                                 }
  57
  58                                 case 's': {
  59                                         const char* const str = va_arg(ap, const char*);
  60                                         fputs(str, stderr);
  61                                         break;
  62                                 }
  63
  64                                 case 'E': {
  65                                         const expression_t* const expr = va_arg(ap, const expression_t*);
  66                                         print_expression(expr);
  67                                         break;
  68                                 }
  69
  70                                 case 'Q': {
  71                                         const unsigned qualifiers = va_arg(ap, unsigned);
  72                                         print_type_qualifiers(qualifiers);
  73                                         break;
  74                                 }
  75
  76                                 case 'T': {
  77                                         const type_t* const type = va_arg(ap, const type_t*);
  78                                         const symbol_t*     sym  = NULL;
  79                                         if (extended) {
  80                                                 sym = va_arg(ap, const symbol_t*);
  81                                         }
  82                                         print_type_ext(type, sym, NULL);
  83                                         break;
  84                                 }
  85
  86                                 case 'K': {
  87                                         const token_t* const token = va_arg(ap, const token_t*);
  88                                         print_token(stderr, token);
  89                                         break;
  90                                 }
  91
  92                                 case 'k': {
  93                                         if (extended) {
  94                                                 bool              first     = false;
  95                                                 va_list*          toks      = va_arg(ap, va_list*);
  96                                                 const char* const delimiter = va_arg(ap, const char*);
  97                                                 for (;;) {
  98                                                         const token_type_t tok = va_arg(*toks, token_type_t);
  99                                                         if (tok == 0)
 100                                                                 break;
 101                                                         if (first) {
 102                                                                 first = false;
 103                                                         } else {
 104                                                                 fputs(delimiter, stderr);
 105                                                         }
 106                                                         print_token_type(stderr, tok);
 107                                                 }
 108                                         } else {
 109                                                 const token_type_t token = va_arg(ap, token_type_t);
 110                                                 print_token_type(stderr, token);
 111                                         }
 112                                         break;
 113                                 }
 114
 115                                 default:
 116                                         panic("unknown format specifier");
 117                         }
 118                 } else {
 119                         fputc(*f, stderr);
 120                 }
 121         }
 122 }
 123
 124 void diagnosticf(const char *const fmt, ...)
 125 {
 126         va_list ap;
 127         va_start(ap, fmt);
 128         ++diagnostic_count;
 129         diagnosticvf(fmt, ap);
 130         va_end(ap);
 131 }
 132
 133 void errorf(const source_position_t pos, const char *const fmt, ...)
 134 {
 135         ++error_count;
 136         fprintf(stderr, "%s:%u: error: ", pos.input_name, pos.linenr);
 137         va_list ap;
 138         va_start(ap, fmt);
 139         diagnosticvf(fmt, ap);
 140         va_end(ap);
 141         fputc('\n', stderr);
 142
 143 #ifdef ABORT_ON_ERROR
 144         abort();
 145 #endif
 146 }
 147
 148 void warningf(const source_position_t pos, const char *const fmt, ...)
 149 {
 150         ++warning_count;
 151         fprintf(stderr, "%s:%u: warning: ", pos.input_name, pos.linenr);
 152         va_list ap;
 153         va_start(ap, fmt);
 154         diagnosticvf(fmt, ap);
 155         va_end(ap);
 156         fputc('\n', stderr);
 157 }