wip:

Add type system and refator for having only epression

examples/test_function_call.lox

@@ -1,30 +1,30 @@
 
-function :: fn() do
+function :: fn(): Nil do
     print "Function";
-end
+end;
 
 
-function_factory :: fn() do
+function_factory :: fn(): Any do
     print "Function Factory";
-    function
-end
+    function;
+end;
 
-function_fatcoty_factory :: fn() do
+function_fatcoty_factory :: fn(): Any do
     print "Function Factory Factory";
     return function_factory;
-end
+end;
 
 //function();
 //function_factory()();
 //function_fatcoty_factory()()();
-clock()
+clock();
 
-closure :: fn() do
-    value = "Closure";
-    internal :: fn() do
+closure :: fn(): Any do
+    value := "Closure";
+    internal :: fn(): Nil do
         print value;
-    end
+    end;
     return internal;
-end
+end;
 
-closure()
+closure();