Microsoft.Automata.Z3.TreeRule.CheckForAllStates C# (CSharp) 메소드

        private static bool CheckForAllStates(Expr output, Func<Expr, bool> phi)
        {
            if (output.ASTKind != Z3_ast_kind.Z3_APP_AST)
                throw new AutomataException(AutomataExceptionKind.TreeTransducer_UnexpectedOutputExpr);

            var f = output.FuncDecl;
            var args = output.Args;

            if (TreeTheory.IsTrans(f))
            {
                //check the state condition for the first argument
                bool res = phi(args[0]);
                return res;
            }
            else //must be constructor
            {
                for (int i = 1; i < args.Length; i++)
                    if (!CheckForAllStates(args[i], phi))
                        return false;
                return true;
            }
        }