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ICSharpCode.TextEditor/Project/Src/Document/TextLocation.cs

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+// <file>
+//     <copyright see="prj:///doc/copyright.txt"/>
+//     <license see="prj:///doc/license.txt"/>
+//     <owner name="Daniel Grunwald" email="daniel@danielgrunwald.de"/>
+//     <version>$Revision: 2658$</version>
+// </file>
+
+using System;
+
+namespace ICSharpCode.TextEditor
+{
+	/// <summary>
+	/// A line/column position.
+	/// Text editor lines/columns are counting from zero.
+	/// </summary>
+	public struct TextLocation : IComparable<TextLocation>, IEquatable<TextLocation>
+	{
+		/// <summary>
+		/// Represents no text location (-1, -1).
+		/// </summary>
+		public static readonly TextLocation Empty = new TextLocation(-1, -1);
+		
+		public TextLocation(int column, int line)
+		{
+			x = column;
+			y = line;
+		}
+		
+		int x, y;
+		
+		public int X {
+			get { return x; }
+			set { x = value; }
+		}
+		
+		public int Y {
+			get { return y; }
+			set { y = value; }
+		}
+		
+		public int Line {
+			get { return y; }
+			set { y = value; }
+		}
+		
+		public int Column {
+			get { return x; }
+			set { x = value; }
+		}
+		
+		public bool IsEmpty {
+			get {
+				return x <= 0 && y <= 0;
+			}
+		}
+		
+		public override string ToString()
+		{
+			return string.Format("(Line {1}, Col {0})", this.x, this.y);
+		}
+		
+		public override int GetHashCode()
+		{
+			return unchecked (87 * x.GetHashCode() ^ y.GetHashCode());
+		}
+		
+		public override bool Equals(object obj)
+		{
+			if (!(obj is TextLocation)) return false;
+			return (TextLocation)obj == this;
+		}
+		
+		public bool Equals(TextLocation other)
+		{
+			return this == other;
+		}
+		
+		public static bool operator ==(TextLocation a, TextLocation b)
+		{
+			return a.x == b.x && a.y == b.y;
+		}
+		
+		public static bool operator !=(TextLocation a, TextLocation b)
+		{
+			return a.x != b.x || a.y != b.y;
+		}
+		
+		public static bool operator <(TextLocation a, TextLocation b)
+		{
+			if (a.y < b.y)
+				return true;
+			else if (a.y == b.y)
+				return a.x < b.x;
+			else
+				return false;
+		}
+		
+		public static bool operator >(TextLocation a, TextLocation b)
+		{
+			if (a.y > b.y)
+				return true;
+			else if (a.y == b.y)
+				return a.x > b.x;
+			else
+				return false;
+		}
+		
+		public static bool operator <=(TextLocation a, TextLocation b)
+		{
+			return !(a > b);
+		}
+		
+		public static bool operator >=(TextLocation a, TextLocation b)
+		{
+			return !(a < b);
+		}
+		
+		public int CompareTo(TextLocation other)
+		{
+			if (this == other)
+				return 0;
+			if (this < other)
+				return -1;
+			else
+				return 1;
+		}
+	}
+}