[svn] r7556: vs-plugin/trunk/Nemerle.VsIntegration/StringOrInt.cs

[kliss]

Log:
FIX: Missing file

Author: kliss
Date: Wed Mar 28 13:17:54 2007
New Revision: 7556

Added:
   vs-plugin/trunk/Nemerle.VsIntegration/StringOrInt.cs

Added: vs-plugin/trunk/Nemerle.VsIntegration/StringOrInt.cs
==============================================================================
--- (empty file)
+++ vs-plugin/trunk/Nemerle.VsIntegration/StringOrInt.cs	Wed Mar 28 13:17:54 2007
@@ -0,0 +1,95 @@
+using System;
+
+namespace Nemerle.VisualStudio
+{
+	/// <summary>
+	/// This class represents a piece of information that can be expressed either by string
+	/// or integer. For example, one can reference DataTable.Columns by name or index.
+	/// Or we may select a contract by its number (string) or ID (integer).
+	/// </summary>
+	public class StringOrInt
+	{
+		private string	_stringValue;
+		private int		_intValue;
+		
+		/// <summary>
+		/// Constructs new instance of <see cref="StringOrInt"/> out of <see cref="string"/>
+		/// </summary>
+		/// <param name="value">Value</param>
+		public StringOrInt(string value)
+		{
+			_stringValue = value;
+			_intValue = 0;
+		}
+
+		/// <summary>
+		/// Constructs new instance of <see cref="StringOrInt"/> out of <see cref="int"/>
+		/// </summary>
+		/// <param name="value">Value</param>
+		public StringOrInt(int value)
+		{
+			_stringValue = null;
+			_intValue = value;
+		}
+		
+		/// <summary>
+		/// Gets value indicating if value of this instance is string.
+		/// </summary>
+		public bool IsString
+		{
+			get{ return _stringValue != null;}
+		}
+		
+		/// <summary>
+		/// Gets string value of instance. If value isn't string, <see cref="InvalidOperationException"/
+		/// is thrown.
+		/// </summary>
+		public string StringValue
+		{
+			get
+			{
+				if(_stringValue == null)
+					throw new InvalidOperationException("Value is specified by integer.");
+				return _stringValue;
+			}
+		}
+
+		/// <summary>
+		/// Gets integer value of instance. If value isn't integer, <see cref="InvalidOperationException"/
+		/// is thrown.
+		/// </summary>
+		public int IntValue
+		{
+			get
+			{
+				if(_stringValue != null)
+					throw new InvalidOperationException("Value is specified by string.");
+				return _intValue;
+			}
+		}
+		
+		/// <summary>
+		/// Implicit conversion operator.
+		/// </summary>
+		/// <param name="str">String value to convert from.</param>
+		/// <returns>New instance of <see cref="StringOrInt"/></returns>
+		public static implicit operator StringOrInt(string str)
+		{
+			return new StringOrInt(str);
+		}
+
+		
+		/// <summary>
+		/// Implicit conversion operator.
+		/// </summary>
+		/// <param name="num">Integer value to convert from.</param>
+		/// <returns>New instance of <see cref="StringOrInt"/></returns>
+		public static implicit operator StringOrInt(int num)
+		{
+			return new StringOrInt(num);
+		}
+
+		
+	}
+}
+