source: branches/CodeEditor/HeuristicLab.ExtLibs/HeuristicLab.NRefactory/5.5.0/NRefactory.CSharp-5.5.0/IndentEngine/NullIStateMachineIndentEngine.cs @ 11700

//
// NullIStateMachineIndentEngine.cs
//
// Author:
//       Mike KrÃŒger <mkrueger@xamarin.com>
//
// Copyright (c) 2013 Xamarin Inc. (http://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>
  /// An empty IStateMachineIndentEngine implementation that does nothing.
  /// </summary>
  public sealed class NullIStateMachineIndentEngine : IStateMachineIndentEngine
  {
    readonly ICSharpCode.NRefactory.Editor.IDocument document;
    int offset;

    public NullIStateMachineIndentEngine(ICSharpCode.NRefactory.Editor.IDocument document)
    {
      if (document == null)
        throw new ArgumentNullException("document");
      this.document = document;
    }

    #region IStateMachineIndentEngine implementation
    public IStateMachineIndentEngine Clone()
    {
      return new NullIStateMachineIndentEngine(document) { offset = this.offset };
    }

    bool IStateMachineIndentEngine.IsInsidePreprocessorDirective {
      get {
        return false;
      }
    }

    bool IStateMachineIndentEngine.IsInsidePreprocessorComment {
      get {
        return false;
      }
    }

    bool IStateMachineIndentEngine.IsInsideStringLiteral {
      get {
        return false;
      }
    }

    bool IStateMachineIndentEngine.IsInsideVerbatimString {
      get {
        return false;
      }
    }

    bool IStateMachineIndentEngine.IsInsideCharacter {
      get {
        return false;
      }
    }

    bool IStateMachineIndentEngine.IsInsideString {
      get {
        return false;
      }
    }

    bool IStateMachineIndentEngine.IsInsideLineComment {
      get {
        return false;
      }
    }

    bool IStateMachineIndentEngine.IsInsideMultiLineComment {
      get {
        return false;
      }
    }

    bool IStateMachineIndentEngine.IsInsideDocLineComment {
      get {
        return false;
      }
    }

    bool IStateMachineIndentEngine.IsInsideComment {
      get {
        return false;
      }
    }

    bool IStateMachineIndentEngine.IsInsideOrdinaryComment {
      get {
        return false;
      }
    }

    bool IStateMachineIndentEngine.IsInsideOrdinaryCommentOrString {
      get {
        return false;
      }
    }

    bool IStateMachineIndentEngine.LineBeganInsideVerbatimString {
      get {
        return false;
      }
    }

    bool IStateMachineIndentEngine.LineBeganInsideMultiLineComment {
      get {
        return false;
      }
    }
    #endregion

    #region IDocumentIndentEngine implementation
    void IDocumentIndentEngine.Push(char ch)
    {
      offset++;
    }

    void IDocumentIndentEngine.Reset()
    {
      this.offset = 0;
    }

    void IDocumentIndentEngine.Update(int offset)
    {
      this.offset = offset;
    }

    IDocumentIndentEngine IDocumentIndentEngine.Clone()
    {
      return Clone();
    }

    ICSharpCode.NRefactory.Editor.IDocument IDocumentIndentEngine.Document {
      get {
        return document;
      }
    }

    string IDocumentIndentEngine.ThisLineIndent {
      get {
        return "";
      }
    }

    string IDocumentIndentEngine.NextLineIndent {
      get {
        return "";
      }
    }

    string IDocumentIndentEngine.CurrentIndent {
      get {
        return "";
      }
    }

    bool IDocumentIndentEngine.NeedsReindent {
      get {
        return false;
      }
    }

    int IDocumentIndentEngine.Offset {
      get {
        return offset;
      }
    }
    TextLocation IDocumentIndentEngine.Location {
      get {
        return TextLocation.Empty;
      }
    }

    /// <inheritdoc />
    public bool EnableCustomIndentLevels
    {
      get { return false; }
      set { }
    }

    #endregion

    #region ICloneable implementation
    object ICloneable.Clone()
    {
      return Clone();
    }
    #endregion
  }
}