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