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   1 /*
   2  * Copyright © 2016 Keith Packard <keithp@keithp.com>
   3  *
   4  * This program is free software; you can redistribute it and/or modify
   5  * it under the terms of the GNU General Public License as published by
   6  * the Free Software Foundation, either version 2 of the License, or
   7  * (at your option) any later version.
   8  *
   9  * This program is distributed in the hope that it will be useful, but
  10  * WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12  * General Public License for more details.
  13  */
  14
  15 #include "ao_scheme.h"
  16 #include <stdarg.h>
  17
  18 void
  19 ao_scheme_vfprintf(FILE *out, const char *format, va_list args)
  20 {
  21         char c;
  22
  23         while ((c = *format++) != '\0') {
  24                 if (c == '%') {
  25                         switch (c = *format++) {
  26                         case 'v':
  27                                 ao_scheme_poly_write(out, (ao_poly) va_arg(args, unsigned int), true);
  28                                 break;
  29                         case 'V':
  30                                 ao_scheme_poly_write(out, (ao_poly) va_arg(args, unsigned int), false);
  31                                 break;
  32                         case 'p':
  33                                 fprintf(out, "%p", va_arg(args, void *));
  34                                 break;
  35                         case 'd':
  36                                 fprintf(out, "%d", va_arg(args, int));
  37                                 break;
  38                         case 'x':
  39                                 fprintf(out, "%x", va_arg(args, int));
  40                                 break;
  41                         case 's':
  42                                 fprintf(out, "%s", va_arg(args, char *));
  43                                 break;
  44                         default:
  45                                 putc(c, out);
  46                                 break;
  47                         }
  48                 } else
  49                         putc(c, out);
  50         }
  51 }
  52
  53 void
  54 ao_scheme_fprintf(FILE *out, const char *format, ...)
  55 {
  56         va_list args;
  57         va_start(args, format);
  58         ao_scheme_vfprintf(out, format, args);
  59         va_end(args);
  60 }
  61
  62 ao_poly
  63 ao_scheme_error(int error, const char *format, ...)
  64 {
  65         va_list args;
  66
  67         ao_scheme_exception |= error;
  68         va_start(args, format);
  69         ao_scheme_vfprintf(stdout, format, args);
  70         putchar('\n');
  71         va_end(args);
  72         ao_scheme_fprintf(stdout, "Value:  %v\n", ao_scheme_v);
  73         ao_scheme_fprintf(stdout, "Frame:  %v\n", ao_scheme_frame_poly(ao_scheme_frame_current));
  74         printf("Stack:\n");
  75         ao_scheme_stack_write(stdout, ao_scheme_stack_poly(ao_scheme_stack), true);
  76         ao_scheme_fprintf(stdout, "Globals: %v\n", ao_scheme_frame_poly(ao_scheme_frame_global));
  77         return AO_SCHEME_NIL;
  78 }