blob: 1b1984c9bb4eda80f93668ff968f2f43d0fc6813 (
plain)
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
|
//-----------------------------------------------------------------------
// <copyright file="ReferenceEqualityComparer.cs" company="Sirenix IVS">
// Copyright (c) 2018 Sirenix IVS
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
// </copyright>
//-----------------------------------------------------------------------
namespace VRC.Udon.Serialization.OdinSerializer.Utilities
{
using System;
using System.Collections.Generic;
/// <summary>
/// Compares objects by reference only, ignoring equality operators completely. This is used by the property tree reference dictionaries to keep track of references.
/// </summary>
public class ReferenceEqualityComparer<T> : IEqualityComparer<T> where T : class
{
/// <summary>
/// A default, cached instance of this generic variant of the reference equality comparer.
/// </summary>
public static readonly ReferenceEqualityComparer<T> Default = new ReferenceEqualityComparer<T>();
/// <summary>
/// Returns true if the object references are equal.
/// </summary>
public bool Equals(T x, T y)
{
return object.ReferenceEquals(x, y);
}
/// <summary>
/// Returns the result of the object's own GetHashCode method.
/// </summary>
public int GetHashCode(T obj)
{
try
{
return obj.GetHashCode();
}
catch (NullReferenceException)
{
return -1;
}
}
}
}
|
