diff options
Diffstat (limited to 'mcs/class/Mono.C5/C5/Comparer.cs')
| -rw-r--r-- | mcs/class/Mono.C5/C5/Comparer.cs | 154 |
1 files changed, 0 insertions, 154 deletions
diff --git a/mcs/class/Mono.C5/C5/Comparer.cs b/mcs/class/Mono.C5/C5/Comparer.cs deleted file mode 100644 index 7d760131d9f..00000000000 --- a/mcs/class/Mono.C5/C5/Comparer.cs +++ /dev/null @@ -1,154 +0,0 @@ -#if NET_2_0 -/*
- Copyright (c) 2003-2006 Niels Kokholm and Peter Sestoft
- Permission is hereby granted, free of charge, to any person obtaining a copy
- of this software and associated documentation 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 C5;
-using System;
-using System.Reflection;
-using System.Reflection.Emit;
-using System.Diagnostics;
-using SCG = System.Collections.Generic;
-
-namespace C5
-{
-/// <summary>
-/// A default item comparer for an item type that is either generic (IComparable<T>)
-/// or ordinarily (System.IComparable) comparable.
-/// </summary>
- public static class Comparer<T>
- {
- readonly static Type naturalComparerO = typeof(NaturalComparerO<>);
-
- readonly static Type naturalComparer = typeof(NaturalComparer<>);
-
- static SCG.IComparer<T> cachedComparer = null;
-
- /// <summary>
- /// Create a default comparer.
- /// <para>The IComparer[T] object is constructed when this class is initialised, i.e.
- /// its static constructors called. Thus, the property will be the same object
- /// for the duration of an invocation of the runtime, but a value serialized in
- /// another invocation and deserialized here will not be the same object.</para>
- /// </summary>
- /// <exception cref="NotComparableException">If T is not comparable</exception>
- /// <value>The comparer</value>
- [Tested]
- public static SCG.IComparer<T> Default
- {
- get
- {
- if (cachedComparer != null)
- return cachedComparer;
-
- Type t = typeof(T);
-
- if (t.IsValueType)
- {
- if (t.Equals(typeof(int)))
- return cachedComparer = (SCG.IComparer<T>)(new IntComparer());
-
- if (t.Equals(typeof(double)))
- return cachedComparer = (SCG.IComparer<T>)(new DoubleComparer());
-
- if (t.Equals(typeof(byte)))
- return cachedComparer = (SCG.IComparer<T>)(new ByteComparer());
- }
-
- if (typeof(IComparable<T>).IsAssignableFrom(t))
- {
- Type c = naturalComparer.MakeGenericType(new Type[] { t });
-
- return cachedComparer = (SCG.IComparer<T>)(c.GetConstructor(System.Type.EmptyTypes).Invoke(null));
- }
-
- if (t.GetInterface("System.IComparable") != null)
- {
- Type c = naturalComparerO.MakeGenericType(new Type[] { t });
-
- return cachedComparer = (SCG.IComparer<T>)(c.GetConstructor(System.Type.EmptyTypes).Invoke(null));
- }
-
- throw new NotComparableException(String.Format("Cannot make comparer for type {0}", t));
- }
- }
- }
-
- /// <summary>
- /// A natural generic IComparer for an IComparable<T> item type
- /// </summary>
- /// <typeparam name="T"></typeparam>
- public class NaturalComparer<T> : SCG.IComparer<T>
- where T : IComparable<T>
- {
- /// <summary>
- /// Compare two items
- /// </summary>
- /// <param name="item1">First item</param>
- /// <param name="item2">Second item</param>
- /// <returns>item1 <=> item2</returns>
- [Tested]
- public int Compare(T item1, T item2) { return item1 != null ? item1.CompareTo(item2) : item2 != null ? -1 : 0; }
- }
-
- /// <summary>
- /// A natural generic IComparer for a System.IComparable item type
- /// </summary>
- /// <typeparam name="T"></typeparam>
- public class NaturalComparerO<T> : SCG.IComparer<T>
- where T : System.IComparable
- {
- /// <summary>
- /// Compare two items
- /// </summary>
- /// <param name="item1">First item</param>
- /// <param name="item2">Second item</param>
- /// <returns>item1 <=> item2</returns>
- [Tested]
- public int Compare(T item1, T item2) { return item1 != null ? item1.CompareTo(item2) : item2 != null ? -1 : 0; }
- }
-
- /// <summary>
- /// A generic comparer for type T based on a Comparison[T] delegate
- /// </summary>
- /// <typeparam name="T"></typeparam>
- public class DelegateComparer<T> : SCG.IComparer<T>
- {
- readonly Comparison<T> cmp;
- /// <summary>
- ///
- /// </summary>
- /// <param name="comparison"></param>
- public DelegateComparer(Comparison<T> comparison)
- {
- if (comparison == null)
- throw new NullReferenceException("Comparison cannot be null");
- this.cmp = comparison;
- }
- /// <summary>
- ///
- /// </summary>
- /// <param name="item1">First item</param>
- /// <param name="item2">Second item</param>
- /// <returns>item1 <=> item2</returns>
- public int Compare(T item1, T item2) { return cmp(item1, item2); }
- }
-} -#endif |