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
59
60
61
62
63
64
65
66
67
68
|
/* ****************************************************************************
*
* Copyright (c) Microsoft Corporation.
*
* This source code is subject to terms and conditions of the Microsoft Public License. A
* copy of the license can be found in the License.html file at the root of this distribution. If
* you cannot locate the Microsoft Public License, please send an email to
* dlr@microsoft.com. By using this source code in any fashion, you are agreeing to be bound
* by the terms of the Microsoft Public License.
*
* You must not remove this notice, or any other, from this software.
*
*
* ***************************************************************************/
using System.Reflection;
using Microsoft.Contracts;
namespace Microsoft.Scripting.Generation {
/// <summary>
/// Helper class to remove methods w/ identical signatures. Used for GetDefaultMembers
/// which returns members from all types in the hierarchy.
/// </summary>
public class MethodSignatureInfo {
private readonly ParameterInfo[] _pis;
private readonly bool _isStatic;
private readonly int _genericArity;
public MethodSignatureInfo(MethodInfo info)
: this(info.IsStatic, info.GetParameters(), info.IsGenericMethodDefinition ? info.GetGenericArguments().Length : 0){
}
public MethodSignatureInfo(bool isStatic, ParameterInfo[] pis, int genericArity) {
_isStatic = isStatic;
_pis = pis;
_genericArity = genericArity;
}
[Confined]
public override bool Equals(object obj) {
MethodSignatureInfo args = obj as MethodSignatureInfo;
if (args == null) return false;
if (args._isStatic != _isStatic || args._pis.Length != _pis.Length || args._genericArity != _genericArity) {
return false;
}
for (int i = 0; i < _pis.Length; i++) {
ParameterInfo self = _pis[i];
ParameterInfo other = args._pis[i];
if (self.ParameterType != other.ParameterType)
return false;
}
return true;
}
[Confined]
public override int GetHashCode() {
int hash = 6551 ^ (_isStatic ? 79234 : 3123) ^ _genericArity;
foreach (ParameterInfo pi in _pis) {
hash ^= pi.ParameterType.GetHashCode();
}
return hash;
}
}
}
|
