class ASTVarProcessor {

  public static Set<String> process(ASTQueryContainer ast)
  throws VisitorException {
    final Set<String> vars = new HashSet<String>();

    final ASTVarProcessorVisitor v = new ASTVarProcessorVisitor();
    v.visit(ast, vars);
    return vars;
  }

  private  ASTVarProcessor();

}