improve ast

lsp-server/test/test_ast/test.tsf

@@ -1,20 +1,10 @@
-var d, e: boolean;
-global c, d;
-static e, f;
-const a: boolean = false;
+function f1(a: string; b: boolean = true): integer;
+begin
+end;
 
-var a, b: boolean := true;
-static d := "abc";
-global c := 123456;
-// e := f1();
-
-// function f1(a: string; b: boolean = true): integer;
-// begin
-// end;
-
-// function f2(a, b, c);overload;
-// begin
-// end;
+function f2(a, b, c);overload;
+begin
+end;
 
 // var d := 1;
 // c := false;