source: branches/2929_PrioritizedGrammarEnumeration/HeuristicLab.ExtLibs/HeuristicLab.NRefactory/5.5.0/NRefactory.Xml-5.5.0/InternalDocument.cs

// Copyright (c) 2009-2013 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
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// DEALINGS IN THE SOFTWARE.

using System;

namespace ICSharpCode.NRefactory.Xml
{
  internal abstract class InternalObject
  {
    public int StartRelativeToParent;
    public int Length;
    /// <summary>Length that was touched to parsed this object.</summary>
    public int LengthTouched;
    public InternalSyntaxError[] SyntaxErrors;
    public InternalObject[] NestedObjects;
    
    public InternalObject SetStartRelativeToParent(int newStartRelativeToParent)
    {
      if (newStartRelativeToParent == StartRelativeToParent)
        return this;
      InternalObject obj = (InternalObject)MemberwiseClone();
      obj.StartRelativeToParent = newStartRelativeToParent;
      return obj;
    }
    
    public abstract AXmlObject CreatePublicObject(AXmlObject parent, int parentStartOffset);
  }
  
  sealed class InternalDocument : InternalObject
  {
    public override AXmlObject CreatePublicObject(AXmlObject parent, int parentStartOffset)
    {
      return new AXmlDocument(parent, (parent != null ? parentStartOffset + StartRelativeToParent : parentStartOffset), this);
    }
  }
  
  sealed class InternalText : InternalObject
  {
    public TextType Type;
    public bool ContainsOnlyWhitespace;
    public string Value;
    
    public override AXmlObject CreatePublicObject(AXmlObject parent, int parentStartOffset)
    {
      return new AXmlText(parent, (parent != null ? parentStartOffset + StartRelativeToParent : parentStartOffset), this);
    }
    
    public override string ToString()
    {
      return "Text: " + this.Value.Replace("\n", "\\n").Replace("\r", "\\r");
    }
  }
  
  sealed class InternalTag : InternalObject
  {
    public string OpeningBracket;
    public int RelativeNameStart;
    public string Name;
    public string ClosingBracket;
    
    /// <summary> True if tag starts with "&lt;" </summary>
    public bool IsStartOrEmptyTag       { get { return OpeningBracket == "<"; } }
    /// <summary> True if tag starts with "&lt;" and ends with "&gt;" </summary>
    public bool IsStartTag              { get { return OpeningBracket == "<" && ClosingBracket == ">"; } }
    /// <summary> True if tag starts with "&lt;" and does not end with "&gt;" </summary>
    public bool IsEmptyTag              { get { return OpeningBracket == "<" && ClosingBracket != ">" ; } }
    /// <summary> True if tag starts with "&lt;/" </summary>
    public bool IsEndTag                { get { return OpeningBracket == "</"; } }
    /// <summary> True if tag starts with "&lt;?" </summary>
    public bool IsProcessingInstruction { get { return OpeningBracket == "<?"; } }
    /// <summary> True if tag starts with "&lt;!--" </summary>
    public bool IsComment               { get { return OpeningBracket == "<!--"; } }
    /// <summary> True if tag starts with "&lt;![CDATA[" </summary>
    public bool IsCData                 { get { return OpeningBracket == "<![CDATA["; } }
    /// <summary> True if tag starts with one of the DTD starts </summary>
    public bool IsDocumentType          { get { return AXmlTag.DtdNames.Contains(OpeningBracket); } }
    /// <summary> True if tag starts with "&lt;!" </summary>
    public bool IsUnknownBang           { get { return OpeningBracket == "<!"; } }
    
    public override AXmlObject CreatePublicObject(AXmlObject parent, int parentStartOffset)
    {
      return new AXmlTag(parent, (parent != null ? parentStartOffset + StartRelativeToParent : parentStartOffset), this);
    }
    
    public override string ToString()
    {
      return "Tag: " + OpeningBracket + Name + ClosingBracket;
    }
    
    public InternalTag AddSyntaxError(string description)
    {
      if (this.SyntaxErrors != null && this.SyntaxErrors.Length > 0)
        return this; // don't add error if there already is one
      InternalTag tag = (InternalTag)MemberwiseClone();
      tag.SyntaxErrors = new InternalSyntaxError[] { new InternalSyntaxError(0, Length, description) };
      return tag;
    }
  }
  
  struct InternalSyntaxError
  {
    public readonly int RelativeStart;
    public readonly int RelativeEnd;
    public readonly string Description;
    
    public InternalSyntaxError(int relativeStart, int relativeEnd, string description)
    {
      this.RelativeStart = relativeStart;
      this.RelativeEnd = relativeEnd;
      this.Description = description;
    }
  }
  
  sealed class InternalAttribute : InternalObject
  {
    public string Name;
    public int EqualsSignLength; // length of equals sign including the surrounding whitespace
    public string Value;
    
    public override AXmlObject CreatePublicObject(AXmlObject parent, int parentStartOffset)
    {
      return new AXmlAttribute(parent, (parent != null ? parentStartOffset + StartRelativeToParent : parentStartOffset), this);
    }
    
    public override string ToString()
    {
      return "Attribute: " + Name + "='" + Value + "'";
    }
  }
  
  sealed class InternalElement : InternalObject
  {
    public bool HasEndTag;
    public bool IsPropertyNested;
    public readonly string Name;
    
    public InternalElement(InternalTag tag)
    {
      this.Name = tag.Name;
    }
    
    public string Prefix {
      get { return AXmlObject.GetNamespacePrefix(Name); }
    }
    
    public string LocalName {
      get { return AXmlObject.GetLocalName(Name); }
    }
    
    public override AXmlObject CreatePublicObject(AXmlObject parent, int parentStartOffset)
    {
      return new AXmlElement(parent, (parent != null ? parentStartOffset + StartRelativeToParent : parentStartOffset), this);
    }
    
    public override string ToString()
    {
      return "Element: " + NestedObjects[0].ToString();
    }
  }
}