source: branches/2434_crossvalidation/HeuristicLab.ExtLibs/HeuristicLab.NRefactory/5.5.0/NRefactory.CSharp-5.5.0/Ast/ErrorNode.cs

// 
// ErrorNode.cs
//
// Author:
//       Mike Krüger <mkrueger@novell.com>
// 
// Copyright (c) 2011 Xamarin (http://www.xamarin.com);
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
// 
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
// 
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.
using System;

namespace ICSharpCode.NRefactory.CSharp
{
  /// <summary>
  /// Represents a parsing error in the ast. At the moment it only represents missing closing bracket.
  /// This closing bracket is replaced by a node at the highest possible position.
  /// (To make GetAstNodeAt (line, col) working).
  /// </summary>
  public class ErrorNode : AstNode
  {
    static TextLocation maxLoc = new TextLocation (int.MaxValue, int.MaxValue);
    
    public override NodeType NodeType {
      get {
        return NodeType.Unknown;
      }
    }
        
    public override TextLocation StartLocation {
      get {
        return maxLoc;
      }
    }
    
    public override TextLocation EndLocation {
      get {
        return maxLoc;
      }
    }
    
    public ErrorNode ()
    {
    }

    public override void AcceptVisitor(IAstVisitor visitor)
    {
      visitor.VisitErrorNode(this);
    }

    public override T AcceptVisitor<T>(IAstVisitor<T> visitor)
    {
      return visitor.VisitErrorNode(this);
    }

    public override S AcceptVisitor<T, S>(IAstVisitor<T, S> visitor, T data)
    {
      return visitor.VisitErrorNode(this, data);
    }

    protected internal override bool DoMatch(AstNode other, PatternMatching.Match match)
    {
      var o = other as ErrorNode;
      return o != null;
    }

    public override string ToString(CSharpFormattingOptions formattingOptions)
    {
      return "[ErrorNode]";
    }
  }
}