add pic_equal_p

This commit is contained in:
Yuichi Nishiwaki 2013-12-07 06:29:29 -08:00
parent a99cd35a93
commit 28da6d71ba
3 changed files with 34 additions and 10 deletions

View File

@ -100,6 +100,8 @@ int pic_get_args(pic_state *, const char *, ...);
void pic_defun(pic_state *, const char *, pic_func_t);
void pic_defmacro(pic_state *, const char *, struct pic_proc *);
bool pic_equal_p(pic_state *, pic_value, pic_value);
pic_sym pic_intern_cstr(pic_state *, const char *);
const char *pic_symbol_name(pic_state *, pic_sym);

View File

@ -260,16 +260,6 @@
(define-macro (unless test . exprs)
(list 'if test #f (cons 'begin exprs)))
(define (equal? x y)
(cond
((eqv? x y)
#t)
((and (pair? x) (pair? y))
(and (equal? (car x) (car y))
(equal? (cdr x) (cdr y))))
(else
#f)))
(define (member obj list . opts)
(let ((compare (if (null? opts) equal? (car opts))))
(if (null? list)

View File

@ -1,6 +1,27 @@
#include <string.h>
#include "picrin.h"
#include "picrin/pair.h"
bool
pic_equal_p(pic_state *pic, pic_value x, pic_value y)
{
enum pic_tt type;
if (pic_eqv_p(x, y))
return true;
type = pic_type(x);
if (type != pic_type(y))
return false;
switch (type) {
case PIC_TT_PAIR:
return pic_equal_p(pic, pic_car(pic, x), pic_car(pic, y))
&& pic_equal_p(pic, pic_cdr(pic, x), pic_cdr(pic, y));
default:
return false;
}
}
static pic_value
pic_bool_eq_p(pic_state *pic)
@ -22,6 +43,16 @@ pic_bool_eqv_p(pic_state *pic)
return pic_bool_value(pic_eqv_p(x, y));
}
static pic_value
pic_bool_equal_p(pic_state *pic)
{
pic_value x, y;
pic_get_args(pic, "oo", &x, &y);
return pic_bool_value(pic_equal_p(pic, x, y));
}
/* TODO: replace it with native opcode */
static pic_value
pic_bool_not(pic_state *pic)
@ -48,6 +79,7 @@ pic_init_bool(pic_state *pic)
{
pic_defun(pic, "eq?", pic_bool_eq_p);
pic_defun(pic, "eqv?", pic_bool_eqv_p);
pic_defun(pic, "equal?", pic_bool_equal_p);
pic_defun(pic, "not", pic_bool_not);
pic_defun(pic, "boolean?", pic_bool_boolean_p);