From 7a3b25b4dc85643ec1550e68afda45c864e370cf Mon Sep 17 00:00:00 2001
From: Daniel Grunwald <daniel@danielgrunwald.de>
Date: Fri, 3 Aug 2012 18:15:32 +0200
Subject: [PATCH] Add WriteTextTo() method to ITextSource.

---
 ICSharpCode.NRefactory/Editor/ITextSource.cs  | 10 ++++++
 .../Editor/ReadOnlyDocument.cs                | 12 +++++++
 .../Editor/StringBuilderDocument.cs           | 34 +++++++++++++++++++
 .../Editor/StringTextSource.cs                | 12 +++++++
 4 files changed, 68 insertions(+)

diff --git a/ICSharpCode.NRefactory/Editor/ITextSource.cs b/ICSharpCode.NRefactory/Editor/ITextSource.cs
index c8810571de..148aee0d29 100644
--- a/ICSharpCode.NRefactory/Editor/ITextSource.cs
+++ b/ICSharpCode.NRefactory/Editor/ITextSource.cs
@@ -94,6 +94,16 @@ namespace ICSharpCode.NRefactory.Editor
 		/// <exception cref="ArgumentOutOfRangeException">offset or length is outside the valid range.</exception>
 		string GetText(ISegment segment);
 		
+		/// <summary>
+		/// Writes the text from this document into the TextWriter.
+		/// </summary>
+		void WriteTextTo(TextWriter writer);
+		
+		/// <summary>
+		/// Writes the text from this document into the TextWriter.
+		/// </summary>
+		void WriteTextTo(TextWriter writer, int offset, int length);
+		
 		/// <summary>
 		/// Gets the index of the first occurrence of the character in the specified array.
 		/// </summary>
diff --git a/ICSharpCode.NRefactory/Editor/ReadOnlyDocument.cs b/ICSharpCode.NRefactory/Editor/ReadOnlyDocument.cs
index 2a36ccda33..0cc4b68dc5 100644
--- a/ICSharpCode.NRefactory/Editor/ReadOnlyDocument.cs
+++ b/ICSharpCode.NRefactory/Editor/ReadOnlyDocument.cs
@@ -359,6 +359,18 @@ namespace ICSharpCode.NRefactory.Editor
 			return textSource.CreateReader(offset, length);
 		}
 		
+		/// <inheritdoc/>
+		public void WriteTextTo(System.IO.TextWriter writer)
+		{
+			textSource.WriteTextTo(writer);
+		}
+		
+		/// <inheritdoc/>
+		public void WriteTextTo(System.IO.TextWriter writer, int offset, int length)
+		{
+			textSource.WriteTextTo(writer, offset, length);
+		}
+		
 		/// <inheritdoc/>
 		public char GetCharAt(int offset)
 		{
diff --git a/ICSharpCode.NRefactory/Editor/StringBuilderDocument.cs b/ICSharpCode.NRefactory/Editor/StringBuilderDocument.cs
index f69070a196..d310f34c4a 100644
--- a/ICSharpCode.NRefactory/Editor/StringBuilderDocument.cs
+++ b/ICSharpCode.NRefactory/Editor/StringBuilderDocument.cs
@@ -41,11 +41,27 @@ namespace ICSharpCode.NRefactory.Editor
 			b = new StringBuilder();
 		}
 		
+		/// <summary>
+		/// Creates a new StringBuilderDocument with the specified initial text.
+		/// </summary>
 		public StringBuilderDocument(string text)
 		{
+			if (text == null)
+				throw new ArgumentNullException("text");
 			b = new StringBuilder(text);
 		}
 		
+		/// <summary>
+		/// Creates a new StringBuilderDocument with the initial text copied from the specified text source.
+		/// </summary>
+		public StringBuilderDocument(ITextSource textSource)
+		{
+			if (textSource == null)
+				throw new ArgumentNullException("textSource");
+			b = new StringBuilder(textSource.TextLength);
+			textSource.WriteTextTo(new StringWriter(b));
+		}
+		
 		/// <inheritdoc/>
 		public event EventHandler<TextChangeEventArgs> TextChanging;
 		
@@ -273,6 +289,22 @@ namespace ICSharpCode.NRefactory.Editor
 		{
 			return new StringReader(GetText(offset, length));
 		}
+		
+		/// <inheritdoc/>
+		public void WriteTextTo(TextWriter writer)
+		{
+			if (writer == null)
+				throw new ArgumentNullException("writer");
+			writer.Write(this.Text);
+		}
+		
+		/// <inheritdoc/>
+		public void WriteTextTo(TextWriter writer, int offset, int length)
+		{
+			if (writer == null)
+				throw new ArgumentNullException("writer");
+			writer.Write(GetText(offset, length));
+		}
 		#endregion
 		
 		#region GetText / IndexOf
@@ -310,6 +342,8 @@ namespace ICSharpCode.NRefactory.Editor
 		/// <inheritdoc/>
 		public string GetText(ISegment segment)
 		{
+			if (segment == null)
+				throw new ArgumentNullException("segment");
 			return b.ToString(segment.Offset, segment.Length);
 		}
 		
diff --git a/ICSharpCode.NRefactory/Editor/StringTextSource.cs b/ICSharpCode.NRefactory/Editor/StringTextSource.cs
index 36780954bd..99a81f02a7 100644
--- a/ICSharpCode.NRefactory/Editor/StringTextSource.cs
+++ b/ICSharpCode.NRefactory/Editor/StringTextSource.cs
@@ -95,6 +95,18 @@ namespace ICSharpCode.NRefactory.Editor
 			return new StringReader(text.Substring(offset, length));
 		}
 		
+		/// <inheritdoc/>
+		public void WriteTextTo(TextWriter writer)
+		{
+			writer.Write(text);
+		}
+		
+		/// <inheritdoc/>
+		public void WriteTextTo(TextWriter writer, int offset, int length)
+		{
+			writer.Write(text.Substring(offset, length));
+		}
+		
 		/// <inheritdoc/>
 		public char GetCharAt(int offset)
 		{