source: trunk/HeuristicLab.ExtLibs/HeuristicLab.NRefactory/5.5.0/NRefactory.CSharp-5.5.0/Ast/GeneralScope/NewLineNode.cs @ 16240

using System;
namespace ICSharpCode.NRefactory.CSharp
{

  /// <summary>
  /// A New line node represents a line break in the text.
  /// </summary>
  public sealed class NewLineNode : AstNode
  {
    public override NodeType NodeType {
      get {
        return NodeType.Whitespace;
      }
    }

    const uint newLineMask = 0xfu << AstNodeFlagsUsedBits;
    static readonly UnicodeNewline[] newLineTypes = {
      UnicodeNewline.Unknown,
      UnicodeNewline.LF,
      UnicodeNewline.CRLF,
      UnicodeNewline.CR,
      UnicodeNewline.NEL,
      UnicodeNewline.VT,
      UnicodeNewline.FF,
      UnicodeNewline.LS,
      UnicodeNewline.PS
    };
    
    public UnicodeNewline NewLineType {
      get {
        return newLineTypes[(flags & newLineMask) >> AstNodeFlagsUsedBits];
      }
      set {
        ThrowIfFrozen();
        int pos = Array.IndexOf(newLineTypes, value);
        if (pos < 0)
          pos = 0;
        flags &= ~newLineMask; // clear old newline type
        flags |= (uint)pos << AstNodeFlagsUsedBits;
      }
    }

    TextLocation startLocation;
    public override TextLocation StartLocation {
      get { 
        return startLocation;
      }
    }
    
    public override TextLocation EndLocation {
      get {
        return new TextLocation (startLocation.Line + 1, 1);
      }
    }

    public NewLineNode() : this (TextLocation.Empty)
    {
    }

    public NewLineNode(TextLocation startLocation)
    {
      this.startLocation = startLocation;
    }

    public sealed override string ToString(CSharpFormattingOptions formattingOptions)
    {
      return NewLine.GetString (NewLineType);
    }

    public override void AcceptVisitor(IAstVisitor visitor)
    {
      visitor.VisitNewLine (this);
    }
      
    public override T AcceptVisitor<T>(IAstVisitor<T> visitor)
    {
      return visitor.VisitNewLine (this);
    }
    
    public override S AcceptVisitor<T, S>(IAstVisitor<T, S> visitor, T data)
    {
      return visitor.VisitNewLine (this, data);
    }
    
    protected internal override bool DoMatch(AstNode other, ICSharpCode.NRefactory.PatternMatching.Match match)
    {
      return other is NewLineNode;
    }
  }
}