25c29ecb6d
* mes.c (r0, r1, r2, r3, stack): New globals. (gc_loop): Handle MACRO and SCM. (gc_copy): Handle FUNCTION, allow for pre-allocated SCM and SYMBOL. (assq): Flag any BROKEN_HEARTs. (vm_call): New function. Enables moving C stack to GC stack. (evlis_env, apply_env, eval_env, expand_macro_env, begin_env, if_env): Use vm_call-indirection. (call_lambda): New function. (vm_apply_env): Rename from apply_env. Remove parameters, instead use r1, r2 and r0. (vm_evlis_env, vm_eval_env, vm_expand_macro_env, vm_begin_env, vm_if_env): Likewise. (acons): New function. (mes_environment) [!MES_FULL, MES_MINI]: Add cpp switches to create minimally filled environment, for debugging. (main): Print free value at exit. * define.c (define_env): Use vm_call-indirection. (vm_define_env): Rename from define_env. * quasiquote.c (eval_quasiquote): Use vm_call-indirection. (vm_eval_quasiquote): Rename from eval_quasiquote. * tests/gc-2.test: New test. tests/gc-2a.test: New test. tests/gc-3.test: New test.
127 lines
3.2 KiB
C
127 lines
3.2 KiB
C
/* -*-comment-start: "//";comment-end:""-*-
|
|
* Mes --- Maxwell Equations of Software
|
|
* Copyright © 2016 Jan Nieuwenhuizen <janneke@gnu.org>
|
|
*
|
|
* This file is part of Mes.
|
|
*
|
|
* Mes is free software; you can redistribute it and/or modify it
|
|
* under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation; either version 3 of the License, or (at
|
|
* your option) any later version.
|
|
*
|
|
* Mes is distributed in the hope that it will be useful, but
|
|
* WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with Mes. If not, see <http://www.gnu.org/licenses/>.
|
|
*/
|
|
|
|
#if QUASIQUOTE
|
|
scm *add_environment (scm *a, char const *name, scm *x);
|
|
|
|
scm *
|
|
unquote (scm *x) ///((no-environment))
|
|
{
|
|
return cons (&symbol_unquote, x);
|
|
}
|
|
|
|
scm *
|
|
unquote_splicing (scm *x) ///((no-environment))
|
|
{
|
|
return cons (&symbol_unquote_splicing, x);
|
|
}
|
|
|
|
scm *
|
|
eval_quasiquote (scm *e, scm *a)
|
|
{
|
|
return vm_call (vm_eval_quasiquote, e, &scm_undefined, a);
|
|
}
|
|
|
|
scm *
|
|
vm_eval_quasiquote ()
|
|
{
|
|
if (r1 == &scm_nil) return r1;
|
|
else if (atom_p (r1) == &scm_t) return r1;
|
|
else if (eq_p (car (r1), &symbol_unquote) == &scm_t)
|
|
return eval_env (cadr (r1), r0);
|
|
else if (r1->type == PAIR && r1->car->type == PAIR
|
|
&& eq_p (caar (r1), &symbol_unquote_splicing) == &scm_t)
|
|
{
|
|
r2 = eval_env (cadar (r1), r0);
|
|
return append2 (r2, eval_quasiquote (cdr (r1), r0));
|
|
}
|
|
r2 = eval_quasiquote (car (r1), r0);
|
|
return cons (r2, eval_quasiquote (cdr (r1), r0));
|
|
}
|
|
|
|
scm *
|
|
the_unquoters = &scm_nil;
|
|
|
|
scm *
|
|
add_unquoters (scm *a)
|
|
{
|
|
if (the_unquoters == &scm_nil)
|
|
the_unquoters = cons (cons (&symbol_unquote, &scm_unquote),
|
|
cons (cons (&symbol_unquote_splicing, &scm_unquote_splicing),
|
|
&scm_nil));
|
|
return append2 (the_unquoters, a);
|
|
}
|
|
#else // !QUASIQUOTE
|
|
|
|
scm*add_unquoters (scm *a){}
|
|
scm*eval_quasiquote (scm *e, scm *a){}
|
|
|
|
#endif // QUASIQUOTE
|
|
|
|
#if QUASISYNTAX
|
|
scm *
|
|
syntax (scm *x)
|
|
{
|
|
return cons (&symbol_syntax, x);
|
|
}
|
|
|
|
scm *
|
|
unsyntax (scm *x) ///((no-environment))
|
|
{
|
|
return cons (&symbol_unsyntax, x);
|
|
}
|
|
|
|
scm *
|
|
unsyntax_splicing (scm *x) ///((no-environment))
|
|
{
|
|
return cons (&symbol_unsyntax_splicing, x);
|
|
}
|
|
|
|
scm *
|
|
eval_quasisyntax (scm *e, scm *a)
|
|
{
|
|
if (e == &scm_nil) return e;
|
|
else if (atom_p (e) == &scm_t) return e;
|
|
else if (eq_p (car (e), &symbol_unsyntax) == &scm_t)
|
|
return eval_env (cadr (e), a);
|
|
else if (e->type == PAIR && e->car->type == PAIR
|
|
&& eq_p (caar (e), &symbol_unsyntax_splicing) == &scm_t)
|
|
return append2 (eval_env (cadar (e), a), eval_quasisyntax (cdr (e), a));
|
|
return cons (eval_quasisyntax (car (e), a), eval_quasisyntax (cdr (e), a));
|
|
}
|
|
|
|
scm *
|
|
add_unsyntaxers (scm *a)
|
|
{
|
|
a = cons (cons (&symbol_unsyntax, &scm_unsyntax), a);
|
|
a = cons (cons (&symbol_unsyntax_splicing, &scm_unsyntax_splicing), a);
|
|
return a;
|
|
}
|
|
|
|
#else // !QUASISYNTAX
|
|
scm*syntax (scm *x){}
|
|
scm*unsyntax (scm *x){}
|
|
scm*unsyntax_splicing (scm *x){}
|
|
scm*add_unsyntaxers (scm *a){}
|
|
scm*eval_unsyntax (scm *e, scm *a){}
|
|
scm*eval_quasisyntax (scm *e, scm *a){}
|
|
|
|
#endif // !QUASISYNTAX
|