-
Notifications
You must be signed in to change notification settings - Fork 2
/
ReadOnlyCollectionBase.cs
58 lines (52 loc) · 1.47 KB
/
ReadOnlyCollectionBase.cs
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
using System;
using System.Collections.Generic;
using System.Text;
using System.Linq;
namespace Loyc.Collections.Impl
{
/// <summary>Helps you implement read-only collections by providing
/// default implementations for most methods of <see cref="ICollection{T}"/>
/// and <see cref="IReadOnlyCollection{T}"/>.</summary>
/// <remarks>
/// You only need to implement two methods yourself:
/// <code>
/// public abstract int Count { get; }
/// public abstract IEnumerator<T> GetEnumerator();
/// </code>
/// </remarks>
[Serializable]
public abstract class ReadOnlyCollectionBase<T> : ICollectionAndReadOnly<T>
{
#region ISource<T> Members
public abstract int Count { get; }
public abstract IEnumerator<T> GetEnumerator();
System.Collections.IEnumerator System.Collections.IEnumerable.GetEnumerator() { return GetEnumerator(); }
#endregion
#region ICollection<T> Members
void ICollection<T>.Add(T item)
{
throw new NotSupportedException("Collection is read-only.");
}
void ICollection<T>.Clear()
{
throw new NotSupportedException("Collection is read-only.");
}
void ICollection<T>.CopyTo(T[] array, int arrayIndex)
{
ListExt.CopyTo(this, array, arrayIndex);
}
bool ICollection<T>.IsReadOnly
{
get { return true; }
}
bool ICollection<T>.Remove(T item)
{
throw new NotSupportedException("Collection is read-only.");
}
public bool Contains(T item)
{
return Enumerable.Contains(this, item);
}
#endregion
}
}