picrin/src/port.c

63 lines
1.1 KiB
C

#include <stdio.h>
#include <stdlib.h>
#include "picrin.h"
#include "picrin/proc.h"
void
pic_debug(pic_state *pic, pic_value obj)
{
switch (pic_type(obj)) {
case PIC_TT_NIL:
printf("()");
break;
case PIC_TT_PAIR:
printf("(");
pic_debug(pic, pic_car(pic, obj));
printf(" . ");
pic_debug(pic, pic_cdr(pic, obj));
printf(")");
break;
case PIC_TT_SYMBOL:
printf("%s", pic_symbol_ptr(obj)->name);
break;
case PIC_TT_FLOAT:
printf("%g", pic_float(obj));
break;
case PIC_TT_UNDEF:
printf("#<undef>");
break;
case PIC_TT_PROC:
printf("#<proc %p>", pic_proc_ptr(obj));
break;
default:
printf("#<unknown type>");
break;
}
}
static pic_value
pic_port_write(pic_state *pic)
{
pic_value v;
pic_get_args(pic, "o", &v);
pic_debug(pic, v);
return pic_undef_value();
}
static pic_value
pic_port_newline(pic_state *pic)
{
puts("");
return pic_undef_value();
}
void
pic_init_port(pic_state *pic)
{
pic_defun(pic, "write", pic_port_write);
pic_defun(pic, "newline", pic_port_newline);
}