Task #11436

Lisp interpreter added.

* gc.c (finalize, mark_obj): Handle ENV objects.

* hash.c (struct hash): acons_new_l_fun function
pointer order of arguments change.
(equal_hash): Handle ENV.
(make_hash, gethash_l): Use cobj_handle for
type safety. Follow change in acons_new_l.
(gethash, gethash_f, remhash, hash_count,
hash_get_userdata, hash_set_userdata, hash_next): Use cobj_handle.
(gethash_n): New function.

* hash.h (gethash_n): Declared.

* lib.c (env_s): New symbol variable.
(code2type, equal): Handle ENV.  (plusv, minusv, mul, mulv, trunc, mod,
gtv, ltv, gev, lev, maxv, minv, int_str): New functions.
(rehome_sym): New static function.
(func_f0, func_f1, func_f2, func_f3, func_f4, func_n0, func_n1,
func_n2, func_n3, func_n4): Initialize new fields of struct func.
(func_f0v, func_f1v, func_f2v, func_f3v, func_f4v,
func_n0v, func_n1v, func_n2v, func_n3v, func_n4v,
func_interp): New functions.
(apply): Function removed: sanely re-implemented in new eval.c file.
(funcall, funcall1, funcall2, funcall3, funcall4): Handle
variadic and interpreted functions.
(acons, acons_new, acons_new_l, aconsq_new, aconsq_new_l): Reordered
arguments for compatibility with Common Lisp acons.
(obj_init): Special hack to prepare hash_s symbol, which is
needed for type checking inside the hash table funtions invoked
by make_package, at a time when the symbol is not yet interned.
Initialize new env_s variable.
(obj_print, obj_pprint): Handle ENV. Fix confusing rendering of
of function type.
(init): Call new function eval_init.

* lib.h (enum type): New enumeration member ENV.
(struct func): functype member changed to bitfield.
New bitfied members minparam and variadic.
New members in f union: f0v, f1v, f2v, f3v,
f4v, n0v, n1v, n2v, n3v, n4v.
(struct env): New type.
(union obj): New member e of type struct env.
(env_s): Variable declared.
(plusv, minusv, mul, mulv, trunc, mod, gtv, ltv, gev, lev, maxv, minv,

1 files changed, 2 insertions, 0 deletions

diff --git a/hash.h b/hash.h
index 3f4cd2d0..7526b746 100644
--- a/hash.h
+++ b/hash.h
@@ -28,6 +28,7 @@ val hash_obj(val);
 val make_hash(val weak_keys, val weak_vals, val equal_based);
 val *gethash_l(val hash, val key, val *new_p);
 val gethash(val hash, val key);
+val gethash_n(val hash, val key, val notfound_val);
 val gethash_f(val hash, val key, val *found);
 val sethash(val hash, val key, val value);
 val pushhash(val hash, val key, val value);
@@ -38,6 +39,7 @@ val set_hash_userdata(val hash, val data);
 val hashp(val obj);
 val hash_begin(val hash);
 val hash_next(val *iter);
+
 void hash_process_weak(void);
 
 void hash_init(void);