1 files changed, 56 insertions, 0 deletions
diff --git a/Software/Visual_Studio/Scripting/Tango.Scripting.Editors/Utils/ThrowUtil.cs b/Software/Visual_Studio/Scripting/Tango.Scripting.Editors/Utils/ThrowUtil.cs
new file mode 100644
index 000000000..69dbb5ad0
--- /dev/null
+++ b/Software/Visual_Studio/Scripting/Tango.Scripting.Editors/Utils/ThrowUtil.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 System.Globalization;
+
+namespace Tango.Scripting.Editors.Utils
+{
+	/// <summary>
+	/// Contains exception-throwing helper methods.
+	/// </summary>
+	static class ThrowUtil
+	{
+		/// <summary>
+		/// Throws an ArgumentNullException if <paramref name="val"/> is null; otherwise
+		/// returns val.
+		/// </summary>
+		/// <example>
+		/// Use this method to throw an ArgumentNullException when using parameters for base
+		/// constructor calls.
+		/// <code>
+		/// public VisualLineText(string text) : base(ThrowUtil.CheckNotNull(text, "text").Length)
+		/// </code>
+		/// </example>
+		public static T CheckNotNull<T>(T val, string parameterName) where T : class
+		{
+			if (val == null)
+				throw new ArgumentNullException(parameterName);
+			return val;
+		}
+		
+		public static int CheckNotNegative(int val, string parameterName)
+		{
+			if (val < 0)
+				throw new ArgumentOutOfRangeException(parameterName, val, "value must not be negative");
+			return val;
+		}
+		
+		public static int CheckInRangeInclusive(int val, string parameterName, int lower, int upper)
+		{
+			if (val < lower || val > upper)
+				throw new ArgumentOutOfRangeException(parameterName, val, "Expected: " + lower.ToString(CultureInfo.InvariantCulture) + " <= " + parameterName + " <= " + upper.ToString(CultureInfo.InvariantCulture));
+			return val;
+		}
+		
+		public static InvalidOperationException NoDocumentAssigned()
+		{
+			return new InvalidOperationException("Document is null");
+		}
+		
+		public static InvalidOperationException NoValidCaretPosition()
+		{
+			return new InvalidOperationException("Could not find a valid caret position in the line");
+		}
+	}
+}