source: trunk/HeuristicLab.ExtLibs/HeuristicLab.NRefactory/5.5.0/NRefactory-5.5.0/Documentation/DocumentationComment.cs

// Copyright (c) 2010-2013 AlphaSierraPapa for the SharpDevelop Team
// 
// 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;
using ICSharpCode.NRefactory.Editor;
using ICSharpCode.NRefactory.TypeSystem;

namespace ICSharpCode.NRefactory.Documentation
{
  /// <summary>
  /// Represents a documentation comment.
  /// </summary>
  public class DocumentationComment
  {
    ITextSource xml;
    protected readonly ITypeResolveContext context;
    
    /// <summary>
    /// Gets the XML code for this documentation comment.
    /// </summary>
    public ITextSource Xml {
      get { return xml; }
    }
    
    /// <summary>
    /// Creates a new DocumentationComment.
    /// </summary>
    /// <param name="xml">The XML text.</param>
    /// <param name="context">Context for resolving cref attributes.</param>
    public DocumentationComment(ITextSource xml, ITypeResolveContext context)
    {
      if (xml == null)
        throw new ArgumentNullException("xml");
      if (context == null)
        throw new ArgumentNullException("context");
      this.xml = xml;
      this.context = context;
    }
    
    /// <summary>
    /// Creates a new DocumentationComment.
    /// </summary>
    /// <param name="xml">The XML text.</param>
    /// <param name="context">Context for resolving cref attributes.</param>
    public DocumentationComment(string xml, ITypeResolveContext context)
    {
      if (xml == null)
        throw new ArgumentNullException("xml");
      if (context == null)
        throw new ArgumentNullException("context");
      this.xml = new StringTextSource(xml);
      this.context = context;
    }
    
    /// <summary>
    /// Resolves the given cref value to an entity.
    /// Returns null if the entity is not found, or if the cref attribute is syntactically invalid.
    /// </summary>
    public virtual IEntity ResolveCref(string cref)
    {
      try {
        return IdStringProvider.FindEntity(cref, context);
      } catch (ReflectionNameParseException) {
        return null;
      }
    }
    
    public override string ToString ()
    {
      return Xml.Text;
    }
    
    public static implicit operator string (DocumentationComment documentationComment)
    {
      if (documentationComment != null)
        return documentationComment.ToString ();
      return null;
    }
  }
}