add scheme apply, rename apply-> apply_env.

This commit is contained in:
Jan Nieuwenhuizen 2016-07-16 08:17:56 +02:00
parent 08b1a52af2
commit c1886195e6
4 changed files with 33 additions and 37 deletions

36
mes.c
View File

@ -260,16 +260,10 @@ assq (scm *x, scm *a)
}
scm *
eval_quote (scm *fn, scm *x)
{
return apply (fn, x, &scm_nil);
}
scm *
apply_ (scm *fn, scm *x, scm *a)
apply_env_ (scm *fn, scm *x, scm *a)
{
#if DEBUG
printf ("apply fn=");
printf ("apply_env fn=");
display (fn);
printf (" x=");
display (x);
@ -283,12 +277,12 @@ apply_ (scm *fn, scm *x, scm *a)
return call (&scm_call_with_values_env, append2 (x, cons (a, &scm_nil)));
if (builtin_p (fn) == &scm_t)
return call (fn, x);
return apply (eval (fn, a), x, a);
return apply_env (eval (fn, a), x, a);
}
else if (car (fn) == &scm_lambda)
return begin_env (cddr (fn), pairlis (cadr (fn), x, a));
else if (car (fn) == &scm_label)
return apply (caddr (fn), x, cons (cons (cadr (fn), caddr (fn)), a));
return apply_env (caddr (fn), x, cons (cons (cadr (fn), caddr (fn)), a));
return &scm_unspecified;
}
@ -358,11 +352,11 @@ eval_ (scm *e, scm *a)
return evcon (cdr (e), a);
#if MACROS
else if ((macro = assq (car (e), cdr (assq (&scm_macro, a)))) != &scm_f)
return eval (apply_ (cdr (macro), cdr (e), a), a);
return eval (apply_env_ (cdr (macro), cdr (e), a), a);
#endif // MACROS
return apply (car (e), evlis (cdr (e), a), a);
return apply_env (car (e), evlis (cdr (e), a), a);
}
return apply (car (e), evlis (cdr (e), a), a);
return apply_env (car (e), evlis (cdr (e), a), a);
}
scm *
@ -633,10 +627,10 @@ values (scm *x/*...*/)
scm *
call_with_values_env (scm *producer, scm *consumer, scm *a)
{
scm *v = apply_ (producer, &scm_nil, a);
scm *v = apply_env_ (producer, &scm_nil, a);
if (v->type == VALUES)
v = v->cdr;
return apply_ (consumer, v, a);
return apply_env_ (consumer, v, a);
}
scm *
@ -1173,7 +1167,7 @@ loop (scm *r, scm *e, scm *a)
if (e == &scm_nil)
return r;
else if (eq_p (e, &scm_symbol_EOF) == &scm_t)
return apply (cdr (assq (&scm_symbol_loop2, a)),
return apply_env (cdr (assq (&scm_symbol_loop2, a)),
cons (&scm_unspecified, cons (&scm_t, cons (a, &scm_nil))), a);
else if (eq_p (e, &scm_symbol_EOF2) == &scm_t)
return r;
@ -1202,18 +1196,18 @@ main (int argc, char *argv[])
}
scm *
apply (scm *fn, scm *x, scm *a)
apply_env (scm *fn, scm *x, scm *a)
{
#if DEBUG
printf ("\nc:apply fn=");
printf ("\nc:apply_env fn=");
display (fn);
printf (" x=");
display (x);
puts ("");
#endif
if (fn == &scm_apply_)
if (fn == &scm_apply_env_)
return eval_ (x, a);
return apply_ (fn, x, a);
return apply_env_ (fn, x, a);
}
bool evalling_p = false;
@ -1234,7 +1228,7 @@ eval (scm *e, scm *a)
|| evalling_p)
return eval_ (e, a);
evalling_p = true;
scm *r = apply (eval__, cons (e, cons (a, &scm_nil)), a);
scm *r = apply_env (eval__, cons (e, cons (a, &scm_nil)), a);
evalling_p = false;
return r;
}

20
mes.mes
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@ -52,7 +52,7 @@
;; ;; Page 13
;; (define (eval-quote fn x)
;; ;(debug "eval-quote fn=~a x=~a" fn x)
;; (apply fn x '()))
;; (apply-env fn x '()))
(define (evcon c a)
;;(debug "evcon c=~a a=~a\n" c a)
@ -78,8 +78,8 @@
(#t (cons (eval (car m) a) (evlis (cdr m) a)))))
(define (apply fn x a)
;; (display 'mes-apply:)
(define (apply-env fn x a)
;; (display 'mes-apply-env:)
;; (newline)
;; (display 'fn:)
;; (display fn)
@ -94,15 +94,15 @@
((atom? fn)
(cond
((eq? fn 'current-module)
(c:apply current-module '() a))
(c:apply-env current-module '() a))
((eq? fn 'call-with-values)
(c:apply 'call-with-values x a))
(c:apply-env 'call-with-values x a))
((builtin? fn)
(call fn x))
(#t (apply (eval fn a) x a))))
(#t (apply-env (eval fn a) x a))))
((eq? (car fn) 'lambda)
(begin-env (cddr fn) (pairlis (cadr fn) x a)))
((eq? (car fn) 'label) (apply (caddr fn) x (cons (cons (cadr fn)
((eq? (car fn) 'label) (apply-env (caddr fn) x (cons (cons (cadr fn)
(caddr fn)) a)))))
(define (begin-env body a)
@ -142,13 +142,13 @@
((eq? (car e) 'cond) (evcon (cdr e) a))
((pair? (assq (car e) (cdr (assq '*macro* a))))
(c:eval
(c:apply
(c:apply-env
(cdr (assq (car e) (cdr (assq '*macro* a))))
(cdr e)
a)
a))
(#t (apply (car e) (evlis (cdr e) a) a))))
(#t (apply (car e) (evlis (cdr e) a) a))))
(#t (apply-env (car e) (evlis (cdr e) a) a))))
(#t (apply-env (car e) (evlis (cdr e) a) a))))
(define (eval-quasiquote e a)
;; (display 'mes-eval-quasiquote:)

11
mes.scm
View File

@ -58,7 +58,6 @@ exec guile -L $(pwd) -e '(mes)' -s "$0" "$@"
pair?
;; ADDITIONAL PRIMITIVES
apply
number?
procedure?
<
@ -124,7 +123,7 @@ exec guile -L $(pwd) -e '(mes)' -s "$0" "$@"
(eval e (append a environment)))
(define (apply-environment fn e a)
(apply fn e (append a environment)))
(apply-env fn e (append a environment)))
(define (readenv a)
(let ((x (guile:read)))
@ -156,7 +155,7 @@ exec guile -L $(pwd) -e '(mes)' -s "$0" "$@"
(assq . ,assq)
(eval . ,eval-environment)
(apply . ,apply-environment)
(apply-env . ,apply-environment)
(readenv . ,readenv)
(display . ,guile:display)
@ -205,9 +204,9 @@ exec guile -L $(pwd) -e '(mes)' -s "$0" "$@"
(define (loop r e a)
(cond ((null? e) r)
((eq? e 'exit)
(apply (cdr (assq 'loop a))
(cons *unspecified* (cons #t (cons a '())))
a))
(apply-env (cdr (assq 'loop a))
(cons *unspecified* (cons #t (cons a '())))
a))
((atom? e) (loop (eval e a) (readenv a) a))
((eq? (car e) 'define)
(loop *unspecified* (readenv a) (cons (mes-define e a) a)))

View File

@ -108,3 +108,6 @@
(define (begin . rest)
(let () rest))
(define (apply f args)
(c:eval (cons f args) (current-module)))