コード例 #1
0
        /// <summary>
        /// Evaluates the current expression.
        /// </summary>
        /// <param name="context">The context of the evaluation.</param>
        /// <param name="res">The variable which will contain the result of the evaluation.</param>
        protected override void Evaluate(EvaluationContext context, out EvaluationResult res)
        {
            Commands.Command cmd = null;

            if (context.State != null)
            {
                cmd = context.State.GetCommand(CommandName);
            }

            if (cmd == null)
            {
                cmd = context.Host.GetCommand(CommandName);
            }

            if (cmd == null)
            {
                res = new EvaluationResult(CommonStatusCodes.CommandNotFound, this
                                           , string.Format(CultureInfo.InvariantCulture
                                                           , "Command not found: {0}"
                                                           , CommandName)
                                           , this.CommandName);

                return;
            }

            res            = cmd.Invoke(Toggle, context, args_a ?? args.ToArray());
            res.Expression = this;
        }