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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_vprintf(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((ao_poly) va_arg(args, unsigned int), true);
  28                                 break;
  29                         case 'V':
  30                                 ao_scheme_poly_write((ao_poly) va_arg(args, unsigned int), false);
  31                                 break;
  32                         case 'p':
  33                                 printf("%p", va_arg(args, void *));
  34                                 break;
  35                         case 'd':
  36                                 printf("%d", va_arg(args, int));
  37                                 break;
  38                         case 's':
  39                                 printf("%s", va_arg(args, char *));
  40                                 break;
  41                         default:
  42                                 putchar(c);
  43                                 break;
  44                         }
  45                 } else
  46                         putchar(c);
  47         }
  48 }
  49
  50 void
  51 ao_scheme_printf(const char *format, ...)
  52 {
  53         va_list args;
  54         va_start(args, format);
  55         ao_scheme_vprintf(format, args);
  56         va_end(args);
  57 }
  58
  59 ao_poly
  60 ao_scheme_error(int error, const char *format, ...)
  61 {
  62         va_list args;
  63
  64         ao_scheme_exception |= error;
  65         va_start(args, format);
  66         ao_scheme_vprintf(format, args);
  67         putchar('\n');
  68         va_end(args);
  69         ao_scheme_printf("Value:  %v\n", ao_scheme_v);
  70         ao_scheme_printf("Frame:  %v\n", ao_scheme_frame_poly(ao_scheme_frame_current));
  71         printf("Stack:\n");
  72         ao_scheme_stack_write(ao_scheme_stack_poly(ao_scheme_stack), true);
  73         ao_scheme_printf("Globals: %v\n", ao_scheme_frame_poly(ao_scheme_frame_global));
  74         return AO_SCHEME_NIL;
  75 }