#region License Information
/* HeuristicLab
 * Copyright (C) 2002-2013 Heuristic and Evolutionary Algorithms Laboratory (HEAL)
 *
 * This file is part of HeuristicLab.
 *
 * HeuristicLab is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * HeuristicLab is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with HeuristicLab. If not, see <http://www.gnu.org/licenses/>.
 */
#endregion

using System;

namespace HeuristicLab.Grammars {
  public sealed class AttributeType {
    public static readonly AttributeType In = new AttributeType("");
    public static readonly AttributeType Out = new AttributeType("out");
    public static readonly AttributeType Ref = new AttributeType("ref");
    private string attributeType;
    private AttributeType(string attributeType) {
      this.attributeType = attributeType;
    }

    public static AttributeType Parse(string attributeType) {
      if (string.IsNullOrEmpty(attributeType)) return In;
      else if (attributeType == "ref") return Ref;
      else if (attributeType == "out") return Out;
      else throw new ArgumentException("Unknown attribute type string.", attributeType);
    }

    public override string ToString() {
      return attributeType;
    }
  };

  public class Attribute : IAttribute {
    public AttributeType AttributeType { get; private set; }
    public string Type { get; private set; }
    public string Name { get; private set; }

    public Attribute(string name, string type)
      : this(name, type, AttributeType.In) {
    }

    public Attribute(string name, string type, AttributeType attributeType) {
      this.Name = name;
      this.Type = type;
      this.AttributeType = attributeType;
    }

    public override string ToString() {
      return AttributeType + " " + Type + " " + Name;
    }
  }
}