From 89c2621bf66c330dc3f5f025accef543f6fa59ee Mon Sep 17 00:00:00 2001
From: Matt Ward <ward.matt@gmail.com>
Date: Wed, 7 Dec 2011 18:29:55 +0000
Subject: [PATCH] Add simple ASP.NET web forms fold parser.

---
 .../AspNet.Mvc/Project/AspNet.Mvc.csproj      |  11 +
 .../Project/Src/Folding/CharacterReader.cs    |  85 +++++
 .../Project/Src/Folding/HtmlElementFold.cs    |  56 +++
 .../Project/Src/Folding/HtmlNode.cs           |  37 ++
 .../Src/Folding/SimpleWebFormsHtmlReader.cs   | 111 ++++++
 .../Src/Folding/WebFormsHtmlFoldParser.cs     |  66 ++++
 .../AspNet.Mvc/Test/AspNet.Mvc.Tests.csproj   |   8 +
 .../Test/Src/Folding/HtmlElementFoldTests.cs  | 105 ++++++
 .../Folding/WebFormsHtmlFoldParserTests.cs    | 159 +++++++++
 .../Src/Folding/WebFormsHtmlReaderTests.cs    | 324 ++++++++++++++++++
 10 files changed, 962 insertions(+)
 create mode 100644 src/AddIns/BackendBindings/AspNet.Mvc/Project/Src/Folding/CharacterReader.cs
 create mode 100644 src/AddIns/BackendBindings/AspNet.Mvc/Project/Src/Folding/HtmlElementFold.cs
 create mode 100644 src/AddIns/BackendBindings/AspNet.Mvc/Project/Src/Folding/HtmlNode.cs
 create mode 100644 src/AddIns/BackendBindings/AspNet.Mvc/Project/Src/Folding/SimpleWebFormsHtmlReader.cs
 create mode 100644 src/AddIns/BackendBindings/AspNet.Mvc/Project/Src/Folding/WebFormsHtmlFoldParser.cs
 create mode 100644 src/AddIns/BackendBindings/AspNet.Mvc/Test/Src/Folding/HtmlElementFoldTests.cs
 create mode 100644 src/AddIns/BackendBindings/AspNet.Mvc/Test/Src/Folding/WebFormsHtmlFoldParserTests.cs
 create mode 100644 src/AddIns/BackendBindings/AspNet.Mvc/Test/Src/Folding/WebFormsHtmlReaderTests.cs

diff --git a/src/AddIns/BackendBindings/AspNet.Mvc/Project/AspNet.Mvc.csproj b/src/AddIns/BackendBindings/AspNet.Mvc/Project/AspNet.Mvc.csproj
index 3eb7704d3b..6fede1304a 100644
--- a/src/AddIns/BackendBindings/AspNet.Mvc/Project/AspNet.Mvc.csproj
+++ b/src/AddIns/BackendBindings/AspNet.Mvc/Project/AspNet.Mvc.csproj
@@ -115,6 +115,11 @@
     <Compile Include="Src\CurrentAppDomainFactory.cs" />
     <Compile Include="Src\DelegateCommand.cs" />
     <Compile Include="Src\FileSystem.cs" />
+    <Compile Include="Src\Folding\CharacterReader.cs" />
+    <Compile Include="Src\Folding\HtmlElementFold.cs" />
+    <Compile Include="Src\Folding\WebFormsHtmlFoldParser.cs" />
+    <Compile Include="Src\Folding\HtmlNode.cs" />
+    <Compile Include="Src\Folding\SimpleWebFormsHtmlReader.cs" />
     <Compile Include="Src\IAddMvcItemToProjectView.cs" />
     <Compile Include="Src\IFileSystem.cs" />
     <Compile Include="Src\IMvcModelClassLocator.cs" />
@@ -198,8 +203,14 @@
     <Folder Include="ItemTemplates\VisualBasic\CodeTemplates\AddController" />
     <Folder Include="ItemTemplates\VisualBasic\CodeTemplates\AddView\VBHTML" />
     <Folder Include="Resources" />
+    <Folder Include="Src\Folding" />
   </ItemGroup>
   <ItemGroup>
+    <ProjectReference Include="..\..\..\..\Libraries\AvalonEdit\ICSharpCode.AvalonEdit\ICSharpCode.AvalonEdit.csproj">
+      <Project>{6C55B776-26D4-4DB3-A6AB-87E783B2F3D1}</Project>
+      <Name>ICSharpCode.AvalonEdit</Name>
+      <Private>False</Private>
+    </ProjectReference>
     <ProjectReference Include="..\..\..\..\Main\Base\Project\ICSharpCode.SharpDevelop.csproj">
       <Project>{2748AD25-9C63-4E12-877B-4DCE96FBED54}</Project>
       <Name>ICSharpCode.SharpDevelop</Name>
diff --git a/src/AddIns/BackendBindings/AspNet.Mvc/Project/Src/Folding/CharacterReader.cs b/src/AddIns/BackendBindings/AspNet.Mvc/Project/Src/Folding/CharacterReader.cs
new file mode 100644
index 0000000000..74d0070082
--- /dev/null
+++ b/src/AddIns/BackendBindings/AspNet.Mvc/Project/Src/Folding/CharacterReader.cs
@@ -0,0 +1,85 @@
+// Copyright (c) AlphaSierraPapa for the SharpDevelop Team (for details please see \doc\copyright.txt)
+// This code is distributed under the GNU LGPL (for details please see \doc\license.txt)
+
+using System;
+using System.IO;
+
+namespace ICSharpCode.AspNet.Mvc.Folding
+{
+	public class CharacterReader
+	{
+		public const int EndOfCharacters = -1;
+		
+		TextReader reader;
+		
+		public CharacterReader(string html)
+			: this(new StringReader(html))
+		{
+		}
+		
+		public CharacterReader(TextReader reader)
+		{
+			this.reader = reader;
+		}
+		
+		public bool Read()
+		{
+			CurrentCharacter = reader.Read();
+			Offset++;
+			return HasMoreCharactersToRead();
+		}
+		
+		bool HasMoreCharactersToRead()
+		{
+			return CurrentCharacter != EndOfCharacters;
+		}
+		
+		public int Offset { get; private set; }
+		
+		public int PreviousOffset {
+			get { return Offset - 1; }
+		}
+		
+		public int CurrentCharacter { get; private set; }
+		
+		public bool IsLetterOrDigit()
+		{
+			return Char.IsLetterOrDigit((char)CurrentCharacter);
+		}
+		
+		public bool IsLessThanSign()
+		{
+			return CurrentCharacter == '<';
+		}
+		
+		public bool IsGreaterThanSign()
+		{
+			return CurrentCharacter == '>';
+		}
+		
+		public bool IsForwardSlash()
+		{
+			return CurrentCharacter == '/';
+		}
+		
+		public bool IsNextCharacterForwardSlash()
+		{
+			return reader.Peek() == '/';
+		}
+		
+		public bool IsSpace()
+		{
+			return CurrentCharacter == ' ';
+		}
+		
+		public bool IsDoubleQuote()
+		{
+			return CurrentCharacter == '\"';
+		}
+		
+		public bool IsSingleQuote()
+		{
+			return CurrentCharacter == '\'';
+		}
+	}
+}
diff --git a/src/AddIns/BackendBindings/AspNet.Mvc/Project/Src/Folding/HtmlElementFold.cs b/src/AddIns/BackendBindings/AspNet.Mvc/Project/Src/Folding/HtmlElementFold.cs
new file mode 100644
index 0000000000..c7f3bc876a
--- /dev/null
+++ b/src/AddIns/BackendBindings/AspNet.Mvc/Project/Src/Folding/HtmlElementFold.cs
@@ -0,0 +1,56 @@
+// Copyright (c) AlphaSierraPapa for the SharpDevelop Team (for details please see \doc\copyright.txt)
+// This code is distributed under the GNU LGPL (for details please see \doc\license.txt)
+
+using System;
+using ICSharpCode.AvalonEdit.Folding;
+
+namespace ICSharpCode.AspNet.Mvc.Folding
+{
+	public class HtmlElementFold : NewFolding
+	{
+		string elementName = String.Empty;
+		
+		public HtmlElementFold()
+		{
+		}
+		
+		public string ElementName {
+			get { return elementName; }
+			set {
+				elementName = value;
+				UpdateFoldName();
+			}
+		}
+		
+		void UpdateFoldName()
+		{
+			Name = String.Format("<{0}>", elementName);
+		}
+		
+		public override bool Equals(object obj)
+		{
+			var rhs = obj as HtmlElementFold;
+			if (rhs != null) {
+				return
+					(elementName == rhs.ElementName) &&
+					(StartOffset == rhs.StartOffset) &&
+					(EndOffset == rhs.EndOffset);
+			}
+			return false;
+		}
+		
+		public override int GetHashCode()
+		{
+			return base.GetHashCode();
+		}
+		
+		public override string ToString()
+		{
+			return String.Format(
+				"[HtmlElementFold Name='{0}', StartOffset={1}, EndOffset={2}]",
+				Name,
+				StartOffset,
+				EndOffset);
+		}
+	}
+}
diff --git a/src/AddIns/BackendBindings/AspNet.Mvc/Project/Src/Folding/HtmlNode.cs b/src/AddIns/BackendBindings/AspNet.Mvc/Project/Src/Folding/HtmlNode.cs
new file mode 100644
index 0000000000..e7cc615f19
--- /dev/null
+++ b/src/AddIns/BackendBindings/AspNet.Mvc/Project/Src/Folding/HtmlNode.cs
@@ -0,0 +1,37 @@
+// Copyright (c) AlphaSierraPapa for the SharpDevelop Team (for details please see \doc\copyright.txt)
+// This code is distributed under the GNU LGPL (for details please see \doc\license.txt)
+
+using System;
+using System.Text;
+
+namespace ICSharpCode.AspNet.Mvc.Folding
+{
+	public class HtmlNode
+	{
+		StringBuilder nodeValue = new StringBuilder();
+		
+		public string Value {
+			get { return GetElementNameBeforeSpaceCharacter(); }
+		}
+		
+		string GetElementNameBeforeSpaceCharacter()
+		{
+			string elementName = nodeValue.ToString();
+			return GetTextBeforeSpaceCharacter(elementName);
+		}
+		
+		string GetTextBeforeSpaceCharacter(string text)
+		{
+			int spaceIndex = text.IndexOf(' ');
+			if (spaceIndex > 0) {
+				return text.Substring(0, spaceIndex);
+			}
+			return text;
+		}
+		
+		public void Append(int character)
+		{
+			nodeValue.Append((char)character);
+		}
+	}
+}
diff --git a/src/AddIns/BackendBindings/AspNet.Mvc/Project/Src/Folding/SimpleWebFormsHtmlReader.cs b/src/AddIns/BackendBindings/AspNet.Mvc/Project/Src/Folding/SimpleWebFormsHtmlReader.cs
new file mode 100644
index 0000000000..cb921018e2
--- /dev/null
+++ b/src/AddIns/BackendBindings/AspNet.Mvc/Project/Src/Folding/SimpleWebFormsHtmlReader.cs
@@ -0,0 +1,111 @@
+// Copyright (c) AlphaSierraPapa for the SharpDevelop Team (for details please see \doc\copyright.txt)
+// This code is distributed under the GNU LGPL (for details please see \doc\license.txt)
+
+using System;
+using System.IO;
+using System.Text;
+
+namespace ICSharpCode.AspNet.Mvc.Folding
+{
+	public class SimpleWebFormsHtmlReader
+	{
+		CharacterReader reader;
+		HtmlNode currentNode = new HtmlNode();
+		
+		public SimpleWebFormsHtmlReader(string html)
+			: this(new StringReader(html))
+		{
+		}
+		
+		public SimpleWebFormsHtmlReader(TextReader reader)
+			: this(new CharacterReader(reader))
+		{
+		}
+		
+		public SimpleWebFormsHtmlReader(CharacterReader reader)
+		{
+			this.reader = reader;
+		}
+		
+		public string Value {
+			get { return currentNode.Value; }
+		}
+		
+		public int Offset { get; private set; }
+		public int Length { get; private set; }
+		
+		public int EndOffset {
+			get { return Offset + Length; }
+		}
+		
+		public bool IsEmptyElement { get; private set; }
+		public bool IsEndElement { get; private set; }
+		
+		public bool IsStartElement {
+			get { return !IsEndElement; }
+		}
+		
+		public bool Read()
+		{
+			while (ReadNextCharacter()) {
+				if (IsElementStartCharacter()) {
+					currentNode = new HtmlNode();
+					IsEndElement = reader.IsNextCharacterForwardSlash();
+					IsEmptyElement = false;
+					Offset = reader.PreviousOffset;
+				} else if (IsElementEndCharacter()) {
+					Length = reader.Offset - Offset;
+					return true;
+				} else if (reader.IsForwardSlash()) {
+					IsEmptyElement = !IsEndElement;
+				} else if (IsElementNameCharacter()) {
+					currentNode.Append(reader.CurrentCharacter);
+				} else if (reader.IsDoubleQuote()) {
+					ReadDoubleQuotedString();
+				} else if (reader.IsSingleQuote()) {
+					ReadSingleQuotedString();
+				}
+			}
+			return false;
+		}
+		
+		bool ReadNextCharacter()
+		{
+			return reader.Read();
+		}
+		
+		bool IsElementStartCharacter()
+		{
+			return reader.IsLessThanSign();
+		}
+		
+		bool IsElementEndCharacter()
+		{
+			return reader.IsGreaterThanSign();
+		}
+		
+		bool IsElementNameCharacter()
+		{
+			return reader.IsLetterOrDigit() || reader.IsSpace();
+		}
+		
+		void ReadDoubleQuotedString()
+		{
+			ReadUntil(() => reader.IsDoubleQuote());
+		}
+		
+		void ReadUntil(Func<bool> match)
+		{
+			while (ReadNextCharacter()) {
+				if (match()) {
+					return;
+				}
+			}
+		}
+		
+		void ReadSingleQuotedString()
+		{
+			ReadUntil(() => reader.IsSingleQuote());
+		}
+	}
+}
diff --git a/src/AddIns/BackendBindings/AspNet.Mvc/Project/Src/Folding/WebFormsHtmlFoldParser.cs b/src/AddIns/BackendBindings/AspNet.Mvc/Project/Src/Folding/WebFormsHtmlFoldParser.cs
new file mode 100644
index 0000000000..236154e446
--- /dev/null
+++ b/src/AddIns/BackendBindings/AspNet.Mvc/Project/Src/Folding/WebFormsHtmlFoldParser.cs
@@ -0,0 +1,66 @@
+// Copyright (c) AlphaSierraPapa for the SharpDevelop Team (for details please see \doc\copyright.txt)
+// This code is distributed under the GNU LGPL (for details please see \doc\license.txt)
+
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using ICSharpCode.AvalonEdit.Folding;
+
+namespace ICSharpCode.AspNet.Mvc.Folding
+{
+	public class WebFormsHtmlFoldParser
+	{
+		List<HtmlElementFold> folds = new List<HtmlElementFold>();
+		Stack<HtmlElementFold> foldStack = new Stack<HtmlElementFold>();
+		SimpleWebFormsHtmlReader htmlReader;
+		
+		public IEnumerable<NewFolding> GetFolds(string html)
+		{
+			ClearPreviousFolds();
+			htmlReader = new SimpleWebFormsHtmlReader(html);
+			while (htmlReader.Read()) {
+				if (htmlReader.IsEmptyElement) {
+					// No folds for empty elements.
+				} else if (htmlReader.IsEndElement) {
+					AddFoldForCompletedElement();
+				} else {
+					SaveFoldStartOnStack();
+				}
+			}
+			SortFoldsByStartOffset();
+			return folds;
+		}
+		
+		void ClearPreviousFolds()
+		{
+			folds.Clear();
+		}
+		
+		void SaveFoldStartOnStack()
+		{
+			var fold = new HtmlElementFold() {
+				ElementName = htmlReader.Value,
+				StartOffset = htmlReader.Offset
+			};
+			foldStack.Push(fold);
+		}
+		
+		void AddFoldForCompletedElement()
+		{
+			if (foldStack.Any()) {
+				var fold = foldStack.Pop();
+				if (fold.ElementName == htmlReader.Value) {
+					fold.EndOffset = htmlReader.EndOffset;
+					folds.Add(fold);
+				} else {
+					AddFoldForCompletedElement();
+				}
+			}
+		}
+		
+		void SortFoldsByStartOffset()
+		{
+			folds.Sort((fold1, fold2) => fold1.StartOffset.CompareTo(fold2.StartOffset));
+		}
+	}
+}
diff --git a/src/AddIns/BackendBindings/AspNet.Mvc/Test/AspNet.Mvc.Tests.csproj b/src/AddIns/BackendBindings/AspNet.Mvc/Test/AspNet.Mvc.Tests.csproj
index a7f03462ac..26486ef4fa 100644
--- a/src/AddIns/BackendBindings/AspNet.Mvc/Test/AspNet.Mvc.Tests.csproj
+++ b/src/AddIns/BackendBindings/AspNet.Mvc/Test/AspNet.Mvc.Tests.csproj
@@ -103,6 +103,9 @@
     <Compile Include="Src\CodeTemplates\RazorCSharpEditViewTemplateTests.cs" />
     <Compile Include="Src\CodeTemplates\RazorCSharpEmptyViewTemplateTests.cs" />
     <Compile Include="Src\CodeTemplates\RazorCSharpListViewTemplateTests.cs" />
+    <Compile Include="Src\Folding\HtmlElementFoldTests.cs" />
+    <Compile Include="Src\Folding\WebFormsHtmlFoldParserTests.cs" />
+    <Compile Include="Src\Folding\WebFormsHtmlReaderTests.cs" />
     <Compile Include="Src\IsMvcControllerFolderSelectedConditionEvaluatorTests.cs" />
     <Compile Include="Src\IsMvcViewFolderSelectedConditionEvaluatorTests.cs" />
     <Compile Include="Configuration\AssemblyInfo.cs" />
@@ -124,6 +127,10 @@
     <Compile Include="Src\SelectedMvcViewFolderTests.cs" />
   </ItemGroup>
   <ItemGroup>
+    <ProjectReference Include="..\..\..\..\Libraries\AvalonEdit\ICSharpCode.AvalonEdit\ICSharpCode.AvalonEdit.csproj">
+      <Project>{6C55B776-26D4-4DB3-A6AB-87E783B2F3D1}</Project>
+      <Name>ICSharpCode.AvalonEdit</Name>
+    </ProjectReference>
     <ProjectReference Include="..\..\..\..\Main\Base\Project\ICSharpCode.SharpDevelop.csproj">
       <Project>{2748AD25-9C63-4E12-877B-4DCE96FBED54}</Project>
       <Name>ICSharpCode.SharpDevelop</Name>
@@ -149,6 +156,7 @@
     <Folder Include="Helpers" />
     <Folder Include="Src\CodeTemplates" />
     <Folder Include="Src\CodeTemplates\Models" />
+    <Folder Include="Src\Folding" />
   </ItemGroup>
   <Import Project="$(MSBuildBinPath)\Microsoft.CSharp.Targets" />
 </Project>
\ No newline at end of file
diff --git a/src/AddIns/BackendBindings/AspNet.Mvc/Test/Src/Folding/HtmlElementFoldTests.cs b/src/AddIns/BackendBindings/AspNet.Mvc/Test/Src/Folding/HtmlElementFoldTests.cs
new file mode 100644
index 0000000000..936279eefd
--- /dev/null
+++ b/src/AddIns/BackendBindings/AspNet.Mvc/Test/Src/Folding/HtmlElementFoldTests.cs
@@ -0,0 +1,105 @@
+// Copyright (c) AlphaSierraPapa for the SharpDevelop Team (for details please see \doc\copyright.txt)
+// This code is distributed under the GNU LGPL (for details please see \doc\license.txt)
+
+using System;
+using ICSharpCode.AspNet.Mvc.Folding;
+using NUnit.Framework;
+
+namespace AspNet.Mvc.Tests.Folding
+{
+	[TestFixture]
+	public class HtmlElementFoldTests
+	{
+		HtmlElementFold fold;
+		HtmlElementFold lhs;
+		HtmlElementFold rhs;
+		
+		void CreateHtmlElementFoldWithElementName(string elementName)
+		{
+			fold = new HtmlElementFold() { ElementName = elementName };
+		}
+		
+		void CreateHtmlElementFoldsForComparison()
+		{
+			lhs = new HtmlElementFold();
+			rhs = new HtmlElementFold();
+		}
+		
+		[Test]
+		public void Name_HtmlFoldCreatedUsingElementName_ReturnsElementNameInsideTags()
+		{
+			CreateHtmlElementFoldWithElementName("p");
+			
+			Assert.AreEqual("<p>", fold.Name);
+		}
+		
+		[Test]
+		public void Equals_AllPropertiesAreTheSame_ReturnsTrue()
+		{
+			CreateHtmlElementFoldsForComparison();
+			
+			bool result = lhs.Equals(rhs);
+			
+			Assert.IsTrue(result);
+		}
+		
+		[Test]
+		public void Equals_NullCompared_ReturnsFalse()
+		{
+			CreateHtmlElementFoldsForComparison();
+			
+			bool result = lhs.Equals(null);
+			
+			Assert.IsFalse(result);
+		}
+		
+		[Test]
+		public void Equals_DifferentElementNames_ReturnsFalse()
+		{
+			CreateHtmlElementFoldsForComparison();
+			lhs.ElementName = "Test1";
+			rhs.ElementName = "Test";
+			
+			bool result	= lhs.Equals(rhs);
+			
+			Assert.IsFalse(result);
+		}
+		
+		[Test]
+		public void Equals_DifferentStartOffsets_ReturnsFalse()
+		{
+			CreateHtmlElementFoldsForComparison();
+			lhs.StartOffset = 0;
+			rhs.StartOffset = 100;
+			
+			bool result = lhs.Equals(rhs);
+			
+			Assert.IsFalse(result);
+		}
+		
+		[Test]
+		public void Equals_DifferentEndOffsets_ReturnsFalse()
+		{
+			CreateHtmlElementFoldsForComparison();
+			lhs.EndOffset = 0;
+			rhs.EndOffset = 100;
+			
+			bool result = lhs.Equals(rhs);
+			
+			Assert.IsFalse(result);
+		}
+		
+		[Test]
+		public void ToString_ElementNameAndOffsetsSet_ReturnsFoldNameAndOffsets()
+		{
+			CreateHtmlElementFoldWithElementName("foo");
+			fold.StartOffset = 1;
+			fold.EndOffset = 10;
+			
+			string text = fold.ToString();
+			
+			string expectedText = "[HtmlElementFold Name='<foo>', StartOffset=1, EndOffset=10]";
+			Assert.AreEqual(expectedText, text);
+		}
+	}
+}
diff --git a/src/AddIns/BackendBindings/AspNet.Mvc/Test/Src/Folding/WebFormsHtmlFoldParserTests.cs b/src/AddIns/BackendBindings/AspNet.Mvc/Test/Src/Folding/WebFormsHtmlFoldParserTests.cs
new file mode 100644
index 0000000000..fa12832051
--- /dev/null
+++ b/src/AddIns/BackendBindings/AspNet.Mvc/Test/Src/Folding/WebFormsHtmlFoldParserTests.cs
@@ -0,0 +1,159 @@
+// Copyright (c) AlphaSierraPapa for the SharpDevelop Team (for details please see \doc\copyright.txt)
+// This code is distributed under the GNU LGPL (for details please see \doc\license.txt)
+
+using System;
+using System.Collections.Generic;
+using System.Linq;
+
+using ICSharpCode.AspNet.Mvc.Folding;
+using ICSharpCode.AvalonEdit.Folding;
+using NUnit.Framework;
+
+namespace AspNet.Mvc.Tests.Folding
+{
+	[TestFixture]
+	public class WebFormsHtmlFoldParserTests
+	{
+		WebFormsHtmlFoldParser parser;
+		List<NewFolding> folds;
+		
+		void CreateParser()
+		{
+			parser = new WebFormsHtmlFoldParser();
+		}
+		
+		void GetFolds(string text)
+		{
+			folds = parser.GetFolds(text).ToList();
+		}
+		
+		[Test]
+		public void GetFolds_ParagraphStartAndEndTag_ReturnsOneFoldForParagraphTag()
+		{
+			CreateParser();
+			
+			string text =
+				"<p>\r\n" +
+				"</p>";
+			
+			GetFolds(text);
+			
+			var expectedFolds = new HtmlElementFold[] {
+				new HtmlElementFold() {
+					ElementName = "p",
+					StartOffset = 0,
+					EndOffset = 9
+				}
+			};
+			
+			CollectionAssert.AreEqual(expectedFolds, folds);
+		}
+		
+		[Test]
+		public void GetFolds_HtmlWithSingleParagraphStartAndEndTag_ReturnsTwoFolds()
+		{
+			CreateParser();
+			
+			string text =
+				"<html>\r\n" +
+				"<p>\r\n" +
+				"</p>\r\n" +
+				"</html>";
+			
+			GetFolds(text);
+			
+			var expectedFolds = new HtmlElementFold[] {
+				new HtmlElementFold() {
+					ElementName = "html",
+					StartOffset = 0,
+					EndOffset = 26
+				},
+				new HtmlElementFold() {
+					ElementName = "p",
+					StartOffset = 8,
+					EndOffset = 17
+				}
+			};
+			
+			CollectionAssert.AreEqual(expectedFolds, folds);
+		}
+		
+		[Test]
+		public void GetFolds_GetFoldsCalledTwiceForParagraphStartAndEndTag_ReturnsOneFoldForParagraphTag()
+		{
+			CreateParser();
+			
+			string text =
+				"<p>\r\n" +
+				"</p>";
+			
+			GetFolds(text);
+			GetFolds(text);
+			
+			var expectedFolds = new HtmlElementFold[] {
+				new HtmlElementFold() {
+					ElementName = "p",
+					StartOffset = 0,
+					EndOffset = 9
+				}
+			};
+			
+			CollectionAssert.AreEqual(expectedFolds, folds);
+		}
+		
+		[Test]
+		public void GetFolds_ParagraphTagsWithUnclosedBoldTagInside_ReturnsOneFoldForParagraphTag()
+		{
+			CreateParser();
+			
+			string text =
+				"<p>\r\n" +
+				"<b>\r\n" +
+				"</p>";
+			
+			GetFolds(text);
+			
+			var expectedFolds = new HtmlElementFold[] {
+				new HtmlElementFold() {
+					ElementName = "p",
+					StartOffset = 0,
+					EndOffset = 14
+				}
+			};
+			
+			CollectionAssert.AreEqual(expectedFolds, folds);
+		}
+		
+		[Test]
+		public void GetFolds_EndParagraphTag_ReturnsNoFolds()
+		{
+			CreateParser();
+			
+			GetFolds("</p>");
+			
+			Assert.AreEqual(0, folds.Count);
+		}
+		
+		[Test]
+		public void GetFolds_DivTagWithClassAttribute_ReturnsOneFold()
+		{
+			CreateParser();
+			
+			string text =
+				"<div class=\"foo\">\r\n" +
+				"</div>\r\n";
+			
+			GetFolds(text);
+			
+			var expectedFolds = new HtmlElementFold[] {
+				new HtmlElementFold() {
+					ElementName = "div",
+					StartOffset = 0,
+					EndOffset = 25
+				}
+			};
+			
+			CollectionAssert.AreEqual(expectedFolds, folds);
+		}
+	}
+}
\ No newline at end of file
diff --git a/src/AddIns/BackendBindings/AspNet.Mvc/Test/Src/Folding/WebFormsHtmlReaderTests.cs b/src/AddIns/BackendBindings/AspNet.Mvc/Test/Src/Folding/WebFormsHtmlReaderTests.cs
new file mode 100644
index 0000000000..cc54d29a6b
--- /dev/null
+++ b/src/AddIns/BackendBindings/AspNet.Mvc/Test/Src/Folding/WebFormsHtmlReaderTests.cs
@@ -0,0 +1,324 @@
+// Copyright (c) AlphaSierraPapa for the SharpDevelop Team (for details please see \doc\copyright.txt)
+// This code is distributed under the GNU LGPL (for details please see \doc\license.txt)
+
+using System;
+using System.IO;
+using ICSharpCode.AspNet.Mvc.Folding;
+using NUnit.Framework;
+
+namespace AspNet.Mvc.Tests.Folding
+{
+	public class WebFormsHtmlReaderTests
+	{
+		SimpleWebFormsHtmlReader htmlReader;
+		
+		void CreateHtmlReader(string html)
+		{
+			htmlReader = new SimpleWebFormsHtmlReader(html);
+		}
+		
+		[Test]
+		public void Value_ReadSingleParagraphTag_ReturnsParagraphTagName()
+		{
+			CreateHtmlReader("<p>");
+			htmlReader.Read();
+			
+			string value = htmlReader.Value;
+			
+			Assert.AreEqual("p", value);
+		}
+		
+		[Test]
+		public void Read_EmptyString_ReturnsFalse()
+		{
+			CreateHtmlReader(String.Empty);
+			
+			bool result = htmlReader.Read();
+			
+			Assert.IsFalse(result);
+		}
+		
+		[Test]
+		public void Read_ReadSingleParagraphTagHtml_ReturnsTrue()
+		{
+			CreateHtmlReader("<p>");
+			
+			bool result = htmlReader.Read();
+			
+			Assert.IsTrue(result);
+		}
+		
+		[Test]
+		public void Read_ReadTwiceFromSingleParagraphTag_SecondReadReturnsFalse()
+		{
+			CreateHtmlReader("<p>");
+			
+			bool result = htmlReader.Read();
+			result = htmlReader.Read();
+			
+			Assert.IsFalse(result);
+		}
+		
+		[Test]
+		public void Offset_SingleParagraphTagAtStartOfString_ReturnsZero()
+		{
+			CreateHtmlReader("<p>");
+			htmlReader.Read();
+			
+			int offset = htmlReader.Offset;
+			
+			Assert.AreEqual(0, offset);
+		}
+		
+		[Test]
+		public void Length_SingleParagraphTagAtStartOfString_ReturnsThree()
+		{
+			CreateHtmlReader("<p>");
+			htmlReader.Read();
+			
+			int length = htmlReader.Length;
+			
+			Assert.AreEqual(3, length);
+		}
+		
+		[Test]
+		public void Offset_SingleParagraphTagOnSecondLine_IsAfterCarriageReturnAndLineFeedAndReturnsTwo()
+		{
+			CreateHtmlReader("\r\n<p>");
+			htmlReader.Read();
+			
+			int offset = htmlReader.Offset;
+			
+			Assert.AreEqual(2, offset);
+		}
+		
+		[Test]
+		public void Length_SingleParagraphTagOnSecondLine_ReturnsThreeForParagraphNodeRead()
+		{
+			CreateHtmlReader("\r\n<p>");
+			htmlReader.Read();
+			
+			int length = htmlReader.Length;
+			
+			Assert.AreEqual(3, length);
+		}
+		
+		[Test]
+		public void Value_ReadSingleLineBreakTag_ReturnsLineBreakTagName()
+		{
+			CreateHtmlReader("<br>");
+			htmlReader.Read();
+			
+			string value = htmlReader.Value;
+			
+			Assert.AreEqual("br", value);
+		}
+		
+		[Test]
+		public void Length_ReadSingleLineBreakTag_ReturnsFour()
+		{
+			CreateHtmlReader("<br>");
+			htmlReader.Read();
+			
+			int length = htmlReader.Length;
+			
+			Assert.AreEqual(4, length);
+		}
+		
+		[Test]
+		public void Value_ReadParagraphTagFollowedByBoldTag_ReturnsBoldTagName()
+		{
+			CreateHtmlReader("<p><b>");
+			htmlReader.Read();
+			htmlReader.Read();
+			
+			string value = htmlReader.Value;
+			
+			Assert.AreEqual("b", value);
+		}
+		
+		[Test]
+		public void Offset_ReadParagraphTagFollowedByBoldTag_ReturnsThree()
+		{
+			CreateHtmlReader("<p><b>");
+			htmlReader.Read();
+			htmlReader.Read();
+			
+			int offset = htmlReader.Offset;
+			
+			Assert.AreEqual(3, offset);
+		}
+		
+		[Test]
+		public void Value_ReadParagraphTagFollowedByEndParagraphTag_ReturnsParagraphTagName()
+		{
+			CreateHtmlReader("<p></p>");
+			htmlReader.Read();
+			htmlReader.Read();
+			
+			string value = htmlReader.Value;
+			
+			Assert.AreEqual("p", value);
+		}
+		
+		[Test]
+		public void IsEndElement_ReadParagraphTagFollowedByEndParagraphTag_ReturnsTrue()
+		{
+			CreateHtmlReader("<p></p>");
+			htmlReader.Read();
+			htmlReader.Read();
+			
+			bool result = htmlReader.IsEndElement;
+			
+			Assert.IsTrue(result);
+		}
+		
+		[Test]
+		public void IsEmptyElement_ReadEmptyBreakTagElement_ReturnsTrue()
+		{
+			CreateHtmlReader("<br/>");
+			htmlReader.Read();
+			
+			bool result = htmlReader.IsEmptyElement;
+			
+			Assert.IsTrue(result);
+		}
+		
+		[Test]
+		public void IsEmptyElement_ReadParagraphTagFollowedByEndParagraphTag_ReturnsFalse()
+		{
+			CreateHtmlReader("<p></p>");
+			htmlReader.Read();
+			htmlReader.Read();
+			
+			bool result = htmlReader.IsEmptyElement;
+			
+			Assert.IsFalse(result);
+		}
+		
+		[Test]
+		public void Length_ReadParagraphTagFollowedByEndParagraphTag_ReturnsFour()
+		{
+			CreateHtmlReader("<p></p>");
+			htmlReader.Read();
+			htmlReader.Read();
+			
+			int length = htmlReader.Length;
+			
+			Assert.AreEqual(4, length);
+		}
+		
+		[Test]
+		public void IsStartElement_ReadSingleParagraphTag_ReturnTrue()
+		{
+			CreateHtmlReader("<p>");
+			htmlReader.Read();
+			
+			bool result = htmlReader.IsStartElement;
+			
+			Assert.IsTrue(result);
+		}
+		
+		[Test]
+		public void IsEmptyElement_ReadEmptyBreakTagFollowedbySingleParagraphTag_ReturnFalse()
+		{
+			CreateHtmlReader("<br/><p>");
+			htmlReader.Read();
+			htmlReader.Read();
+			
+			bool result = htmlReader.IsEmptyElement;
+			
+			Assert.IsFalse(result);
+		}
+		
+		[Test]
+		public void IsStartElement_ReadEmptyBreakTag_ReturnsTrue()
+		{
+			CreateHtmlReader("<br/>");
+			htmlReader.Read();
+			
+			bool result = htmlReader.IsStartElement;
+			
+			Assert.IsTrue(result);
+		}
+		
+		[Test]
+		public void IsStartElement_ReadParagraphTagFollowedByEndParagraphTag_ReturnsFalse()
+		{
+			CreateHtmlReader("<p></p>");
+			htmlReader.Read();
+			htmlReader.Read();
+			
+			bool result = htmlReader.IsStartElement;
+			
+			Assert.IsFalse(result);
+		}
+		
+		[Test]
+		public void Value_ReadParagraphTagsContainingText_ReturnsParagraphTagName()
+		{
+			CreateHtmlReader("<p>abcdef</p>");
+			htmlReader.Read();
+			htmlReader.Read();
+			
+			string value = htmlReader.Value;
+			
+			Assert.AreEqual("p", value);
+		}
+		
+		[Test]
+		public void Value_ReadDivStartTagWithClassAttribute_ReturnsDivTagName()
+		{
+			CreateHtmlReader("<div class='header'></div>");
+			htmlReader.Read();
+			
+			string value = htmlReader.Value;
+			
+			Assert.AreEqual("div", value);
+		}
+		
+		[Test]
+		public void Value_ScriptStartTagWithForwardSlashInTypeAttribute_ReturnsScriptTagName()
+		{
+			CreateHtmlReader("<script type=\"text/javascript\">");
+			htmlReader.Read();
+			
+			string value = htmlReader.Value;
+			
+			Assert.AreEqual("script", value);
+		}
+		
+		[Test]
+		public void IsStartElement_ScriptStartTagWithForwardSlashInTypeAttribute_ReturnsTrue()
+		{
+			CreateHtmlReader("<script type=\"text/javascript\">");
+			htmlReader.Read();
+			
+			bool result = htmlReader.IsStartElement;
+			
+			Assert.IsTrue(result);
+		}
+		
+		[Test]
+		public void IsEmptyElement_ScriptStartTagWithForwardSlashInTypeAttributeWithDoubleQuotes_ReturnsFalse()
+		{
+			CreateHtmlReader("<script type=\"text/javascript\">");
+			htmlReader.Read();
+			
+			bool result = htmlReader.IsEmptyElement;
+			
+			Assert.IsFalse(result);
+		}
+		
+		[Test]
+		public void IsEmptyElement_ScriptStartTagWithForwardSlashInAttributeWithSingleQuotes_ReturnsFalse()
+		{
+			CreateHtmlReader("<script type='text/javascript'>");
+			htmlReader.Read();
+			
+			bool result = htmlReader.IsEmptyElement;
+			
+			Assert.IsFalse(result);
+		}
+	}
+}