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mes.c: single-statement body lambda closures.

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Jan Nieuwenhuizen 2016-07-17 15:59:21 +02:00
parent e8d7fd95c7
commit bfb2f42cd5
1 changed files with 26 additions and 16 deletions
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42
mes.c
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@ -320,15 +320,8 @@ apply_env_ (scm *fn, scm *x, scm *a)
display (r);
puts ("");
#endif
//return apply_env (r, x, a);
scm *e = eval_ (r, a);
return apply_env (e, x, a);
//return eval_ (cons (r, x), a);
//return apply_env_ (eval (cdr (macro), a), x, a);
//return eval (apply_env_ (cdr (macro), x, a), a);
//return eval (apply_env_ (eval (cdr (macro), a), x, a), a);
}
#endif // MACROS
return &scm_unspecified;
@ -367,8 +360,16 @@ eval_ (scm *e, scm *a)
#endif // MACROS
if (car (e) == &scm_symbol_quote)
return cadr (e);
if (car (e) == &scm_lambda)
return e;
if (car (e) == &scm_lambda) {
scm *p = pairlis (cadr (e), cadr (e), a);
printf ("CLOSURE pairlis=");
display (p);
puts ("");
///return e;
//return make_lambda (cadr (e), eval (cddr (e), evlis (cadr (e), a)));
// FIXME: CLOSURE...caddr: body of ONE: cons with '()
return make_lambda (cadr (e), cons (eval_ (caddr (e), pairlis (cadr (e), cadr (e), a)), &scm_nil));
}
if (car (e) == &scm_symbol_set_x)
return set_env_x (cadr (e), eval (caddr (e), a), a);
#if QUASIQUOTE
@ -1164,14 +1165,8 @@ eval_quasiquote (scm *e, scm *a)
#endif
if (e == &scm_nil) return e;
else if (atom_p (e) == &scm_t) return e;
// else if (eq_p (car (e), &scm_symbol_quote) == &scm_t)
// return cons (car (e), eval_quasiquote (cdr (e), a));
// else if (eq_p (car (e), &scm_symbol_quasiquote) == &scm_t)
// return cons (e, eval_quasiquote (cdr (e), a));
else if (eq_p (car (e), &scm_symbol_unquote) == &scm_t)
return eval (cadr (e), a);
// else if (atom_p (car (e)) == &scm_t)
// return cons (car (e), eval_quasiquote (cdr (e), a));
else if (e->type == PAIR && e->car->type == PAIR
&& eq_p (caar (e), &scm_symbol_unquote_splicing) == &scm_t)
return append2 (eval_ (cadar (e), a), eval_quasiquote (cdr (e), a));
@ -1222,7 +1217,22 @@ define (scm *x, scm *a)
{
if (atom_p (cadr (x)) != &scm_f)
return cons (cadr (x), eval (caddr (x), a));
return cons (caadr (x), make_lambda (cdadr (x), cddr (x)));
#if 1//DEBUG
scm *name = caadr (x);
scm *args = cdadr (x);
scm *body = cddr (x);
printf ("\nc:define name=");
display (name);
printf (" args=");
display (args);
printf (" body=");
display (body);
printf ("\ndefine=");
scm *aa = cons (name, make_lambda (args, body));
display (aa);
puts ("");
#endif
return cons (caadr (x), eval (make_lambda (cdadr (x), cddr (x)), a));
}
scm *