Use of new args for function calls in interpreter.

* args.c (args_copy_to_list): New function.

* args.h (ARGS_MIN): New preprocessor symbol.
(args_add_list): New inline function.
(args_copy_to_list): Declared.

* debug.c (debug): Args in debug frame are now struct args *.
Pull them out nondestructively for printing using
args_copy_to_list.

* eval.c (do_eval_args): Fill struct args argument list
rather than returning evaluated list.
Dot position evaluation is handled by installing
the dot position value as args->list.
(do_eval): Allocate args of at least ARGS_MAX for the
call to do_eval_args. Then use generic_funcall to
invoke the function rather than apply.
(eval_args_lisp1): Modified similarly to do_eval_args.
(eval_lisp1): New static function.
(expand_macro): Construct struct args argument list for
the sake of debug_frame.
(op_dwim): Allocate args which are filled by eval_args_lisp1,
and applied to the function/object with generic_funcall.
The object expression is separately evaluated with
eval_lisp1.

* match.c (h_fun, v_fun): Construct struct args arglist for
the sake of debug_frame call.

* unwind.c (uw_push_debug): args argument becomes
struct args *.

* unwind.h (struct uw_debug): args member becomes
struct args *.
(uw_push_debug): Declaration updated.

* txr.1: Update documentation about dot position argument in
function calls. (list . a) now works, which previously didn't.

1 files changed, 2 insertions, 2 deletions

diff --git a/unwind.h b/unwind.h
index c418eba5..2089608a 100644
--- a/unwind.h
+++ b/unwind.h
@@ -70,7 +70,7 @@ struct uw_debug {
   uw_frame_t *up;
   uw_frtype_t type;
   val func;
-  val args;
+  struct args *args;
   val ub_p_a_pairs;
   val env;
   val data;
@@ -107,7 +107,7 @@ noreturn val uw_errorfv(val fmt, struct args *args);
 val uw_register_subtype(val sub, val super);
 val uw_exception_subtype_p(val sub, val sup);
 void uw_continue(uw_frame_t *curr, uw_frame_t *target);
-void uw_push_debug(uw_frame_t *, val func, val args,
+void uw_push_debug(uw_frame_t *, val func, struct args *,
                    val ub_p_a_pairs, val env, val data,
                    val line, val chr);
 void uw_pop_frame(uw_frame_t *);