Initial commit - fix problems & refactor code

core/primitives/list.py

@@ -0,0 +1,26 @@
+from typing import Any
+
+from core.exceptions import syntaxError
+# from core.printer import Representation
+
+class LinkedList:
+    value = None
+    nxt = None
+
+    def __init__(self, value_, nxt_):
+        self.value = value_
+        self.nxt = nxt_
+
+def car(lst):
+    return lst.value
+
+def cdr(lst):
+    return lst.nxt
+
+def cons(val, lst):
+    return LinkedList(val, lst)
+
+def isList(val):
+    return isinstance(val, LinkedList)
+
+NIL = cons(None, None)