/vqdr/trunk

namespace VQDR.Expression {

  public class VariableValueToken : ValueToken {

    protected string name;

    construct {

      this.priority = PRIO_VALUE;

    }

    public VariableValueToken (string name, int position) {

      base (position);

      this.name = name;

    }

    public override void evaluate_self (Context instance) throws GLib.Error {

      // in the original code there was a check to see if the intance

      // was null, this is not needed here as we don't allow null for that

      // value.

      try {

        result_value = instance.get_value (name);

        result_string = "[" + name + ":" + result_value.to_string () + "]";

      } catch (GLib.Error? e) {

        result_value = result_min_value = result_max_value = 0;

        result_string = "";

        GLib.Error? err = null;

        GLib.Error.propagate (out err, e);

        throw e;

      }

    }

  }

}