Remove unused code from Extensions.cs

Author: andyleejordan

src/PowerShellEditorServices/Utility/Extensions.cs

@@ -2,9 +2,6 @@
 // Licensed under the MIT License.
 
 using System;
-using System.Linq;
-using System.Collections.Generic;
-using System.Management.Automation.Language;
 using System.Text;
 
 namespace Microsoft.PowerShell.EditorServices.Utility
@@ -33,126 +30,6 @@ public static string SafeToString(this object obj)
             return str;
         }
 
-        /// <summary>
-        /// Get the maximum of the elements from the given enumerable.
-        /// </summary>
-        /// <typeparam name="T">Type of object for which the enumerable is defined.</typeparam>
-        /// <param name="elements">An enumerable object of type T</param>
-        /// <param name="comparer">A comparer for ordering elements of type T. The comparer should handle null values.</param>
-        /// <returns>An object of type T. If the enumerable is empty or has all null elements, then the method returns null.</returns>
-        public static T MaxElement<T>(this IEnumerable<T> elements, Func<T, T, int> comparer) where T : class
-        {
-            if (elements == null)
-            {
-                throw new ArgumentNullException(nameof(elements));
-            }
-
-            if (comparer == null)
-            {
-                throw new ArgumentNullException(nameof(comparer));
-            }
-
-            if (!elements.Any())
-            {
-                return null;
-            }
-
-            T maxElement = elements.First();
-            foreach (T element in elements.Skip(1))
-            {
-                if (element != null && comparer(element, maxElement) > 0)
-                {
-                    maxElement = element;
-                }
-            }
-
-            return maxElement;
-        }
-
-        /// <summary>
-        /// Get the minimum of the elements from the given enumerable.
-        /// </summary>
-        /// <typeparam name="T">Type of object for which the enumerable is defined.</typeparam>
-        /// <param name="elements">An enumerable object of type T</param>
-        /// <param name="comparer">A comparer for ordering elements of type T. The comparer should handle null values.</param>
-        /// <returns>An object of type T. If the enumerable is empty or has all null elements, then the method returns null.</returns>
-        public static T MinElement<T>(this IEnumerable<T> elements, Func<T, T, int> comparer) where T : class => MaxElement(elements, (elementX, elementY) => -1 * comparer(elementX, elementY));
-
-        /// <summary>
-        /// Compare extents with respect to their widths.
-        ///
-        /// Width of an extent is defined as the difference between its EndOffset and StartOffest properties.
-        /// </summary>
-        /// <param name="extentX">Extent of type IScriptExtent.</param>
-        /// <param name="extentY">Extent of type IScriptExtent.</param>
-        /// <returns>0 if extentX and extentY are equal in width. 1 if width of extent X is greater than that of extent Y. Otherwise, -1.</returns>
-        public static int ExtentWidthComparer(this IScriptExtent extentX, IScriptExtent extentY)
-        {
-            if (extentX == null && extentY == null)
-            {
-                return 0;
-            }
-
-            if (extentX != null && extentY == null)
-            {
-                return 1;
-            }
-
-            if (extentX == null)
-            {
-                return -1;
-            }
-
-            int extentWidthX = extentX.EndOffset - extentX.StartOffset;
-            int extentWidthY = extentY.EndOffset - extentY.StartOffset;
-            if (extentWidthX > extentWidthY)
-            {
-                return 1;
-            }
-            else if (extentWidthX < extentWidthY)
-            {
-                return -1;
-            }
-            else
-            {
-                return 0;
-            }
-        }
-
-        /// <summary>
-        /// Check if the given coordinates are wholly contained in the instance's extent.
-        /// </summary>
-        /// <param name="scriptExtent">Extent of type IScriptExtent.</param>
-        /// <param name="line">1-based line number.</param>
-        /// <param name="column">1-based column number</param>
-        /// <returns>True if the coordinates are wholly contained in the instance's extent, otherwise, false.</returns>
-        public static bool Contains(this IScriptExtent scriptExtent, int line, int column)
-        {
-            if (scriptExtent.StartLineNumber > line || scriptExtent.EndLineNumber < line)
-            {
-                return false;
-            }
-
-            if (scriptExtent.StartLineNumber == line)
-            {
-                if (scriptExtent.StartLineNumber == scriptExtent.EndLineNumber)
-                {
-                    return scriptExtent.StartColumnNumber <= column && scriptExtent.EndColumnNumber >= column;
-                }
-                else
-                {
-                    return scriptExtent.StartColumnNumber <= column;
-                }
-            }
-
-            if (scriptExtent.EndLineNumber == line)
-            {
-                return scriptExtent.EndColumnNumber >= column;
-            }
-
-            return true;
-        }
-
         /// <summary>
         /// Same as <see cref="StringBuilder.AppendLine()" /> but never CRLF. Use this when building
         /// formatting for clients that may not render CRLF correctly.