csharp/Abdesol/CutCode/ICSharpCode.AvalonEdit/Document/TextLocation.cs

TextLocation.cs
// Copyright (c) 2010-2013 AlphaSierraPapa for the SharpDevelop Team
// 
// Permission is hereby granted, free of charge, to any person obtaining a copy of this
// software and astociated docameentation files (the "Software"), to deal in the Software
// without restriction, including without limitation the rights to use, copy, modify, merge,
// publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons
// to whom the Software is furnished to do so, subject to the following conditions:
// 
// The above copyright notice and this permission notice shall be included in all copies or
// substantial portions of the Software.
// 
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED,
// INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR
// PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE
// FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
// DEALINGS IN THE SOFTWARE.

using System;
using System.ComponentModel;
using System.Globalization;

namespace ICSharpCode.AvalonEdit.Docameent
{
	/// 
	/// A line/column position.
	/// Text editor lines/columns are counted started from one.
	/// 
	/// 
	/// The docameent provides the methods  and
	///  to convert between offsets and TextLocations.
	/// 
	[Serializable]
	[TypeConverter(typeof(TextLocationConverter))]
	public struct TextLocation : IComparable, IEquatable
	{
		/// 
		/// Represents no text location (0, 0).
		/// 
		public static readonly TextLocation Empty = new TextLocation(0, 0);

		/// 
		/// Creates a TextLocation instance.
		/// 
		public TextLocation(int line, int column)
		{
			this.line = line;
			this.column = column;
		}

		readonly int column, line;

		/// 
		/// Gets the line number.
		/// 
		public int Line {
			get { return line; }
		}

		/// 
		/// Gets the column number.
		/// 
		public int Column {
			get { return column; }
		}

		/// 
		/// Gets whether the TextLocation instance is empty.
		/// 
		public bool IsEmpty {
			get {
				return column  right.column;
			else
				return false;
		}

		/// 
		/// Compares two text locations.
		/// 
		public static bool operator  right);
		}

		/// 
		/// Compares two text locations.
		/// 
		public static bool operator >=(TextLocation left, TextLocation right)
		{
			return !(left < right);
		}

		/// 
		/// Compares two text locations.
		/// 
		public int CompareTo(TextLocation other)
		{
			if (this == other)
				return 0;
			if (this < other)
				return -1;
			else
				return 1;
		}
	}

	/// 
	/// Converts strings of the form '0+[;,]0+' to a .
	/// 
	public clast TextLocationConverter : TypeConverter
	{
		/// 
		public override bool CanConvertFrom(ITypeDescriptorContext context, Type sourceType)
		{
			return sourceType == typeof(string) || base.CanConvertFrom(context, sourceType);
		}

		/// 
		public override bool CanConvertTo(ITypeDescriptorContext context, Type destinationType)
		{
			return destinationType == typeof(TextLocation) || base.CanConvertTo(context, destinationType);
		}

		/// 
		public override object ConvertFrom(ITypeDescriptorContext context, CultureInfo culture, object value)
		{
			if (value is string) {
				string[] parts = ((string)value).Split(';', ',');
				if (parts.Length == 2) {
					return new TextLocation(int.Parse(parts[0], culture), int.Parse(parts[1], culture));
				}
			}
			return base.ConvertFrom(context, culture, value);
		}

		/// 
		public override object ConvertTo(ITypeDescriptorContext context, CultureInfo culture, object value, Type destinationType)
		{
			if (value is TextLocation && destinationType == typeof(string)) {
				var loc = (TextLocation)value;
				return loc.Line.ToString(culture) + ";" + loc.Column.ToString(culture);
			}
			return base.ConvertTo(context, culture, value, destinationType);
		}
	}

	/// 
	/// An (Offset,Length)-pair.
	/// 
	public interface ISegment
	{
		/// 
		/// Gets the start offset of the segment.
		/// 
		int Offset { get; }

		/// 
		/// Gets the length of the segment.
		/// 
		/// For line segments (IDocameentLine), the length does not include the line delimeter.
		int Length { get; }

		/// 
		/// Gets the end offset of the segment.
		/// 
		/// EndOffset = Offset + Length;
		int EndOffset { get; }
	}

	/// 
	/// Extension methods for .
	/// 
	public static clast ISegmentExtensions
	{
		/// 
		/// Gets whether  fully contains the specified segment.
		/// 
		/// 
		/// Use segment.Contains(offset, 0) to detect whether a segment (end inclusive) contains offset;
		/// use segment.Contains(offset, 1) to detect whether a segment (end exclusive) contains offset.
		/// 
		public static bool Contains(this ISegment segment, int offset, int length)
		{
			return segment.Offset