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
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
|
// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.
// See the LICENSE file in the project root for more information.
using System.Reflection;
using System.Globalization;
using System.Runtime.Remoting;
using System.Threading;
namespace System
{
public static partial class Activator
{
public static object CreateInstance(Type type, BindingFlags bindingAttr, Binder binder, object[] args, CultureInfo culture, object[] activationAttributes)
{
if (type is null)
throw new ArgumentNullException(nameof(type));
if (type is System.Reflection.Emit.TypeBuilder)
throw new NotSupportedException(SR.NotSupported_CreateInstanceWithTypeBuilder);
// If they didn't specify a lookup, then we will provide the default lookup.
const int LookupMask = 0x000000FF;
if ((bindingAttr & (BindingFlags)LookupMask) == 0)
bindingAttr |= ConstructorDefault;
if (activationAttributes?.Length > 0)
throw new PlatformNotSupportedException(SR.NotSupported_ActivAttr);
if (type.UnderlyingSystemType is RuntimeType rt)
return rt.CreateInstanceImpl(bindingAttr, binder, args, culture);
throw new ArgumentException(SR.Arg_MustBeType, nameof(type));
}
[System.Security.DynamicSecurityMethod]
public static ObjectHandle CreateInstance(string assemblyName, string typeName)
{
StackCrawlMark stackMark = StackCrawlMark.LookForMyCaller;
return CreateInstanceInternal(assemblyName,
typeName,
false,
ConstructorDefault,
null,
null,
null,
null,
ref stackMark);
}
[System.Security.DynamicSecurityMethod]
public static ObjectHandle CreateInstance(string assemblyName, string typeName, bool ignoreCase, BindingFlags bindingAttr, Binder binder, object[] args, CultureInfo culture, object[] activationAttributes)
{
StackCrawlMark stackMark = StackCrawlMark.LookForMyCaller;
return CreateInstanceInternal(assemblyName,
typeName,
ignoreCase,
bindingAttr,
binder,
args,
culture,
activationAttributes,
ref stackMark);
}
[System.Security.DynamicSecurityMethod]
public static ObjectHandle CreateInstance(string assemblyName, string typeName, object[] activationAttributes)
{
StackCrawlMark stackMark = StackCrawlMark.LookForMyCaller;
return CreateInstanceInternal(assemblyName,
typeName,
false,
ConstructorDefault,
null,
null,
null,
activationAttributes,
ref stackMark);
}
public static object CreateInstance(Type type, bool nonPublic) =>
CreateInstance(type, nonPublic, wrapExceptions: true);
internal static object CreateInstance(Type type, bool nonPublic, bool wrapExceptions)
{
if (type is null)
throw new ArgumentNullException(nameof(type));
if (type.UnderlyingSystemType is RuntimeType rt)
return rt.CreateInstanceDefaultCtor(publicOnly: !nonPublic, skipCheckThis: false, fillCache: true, wrapExceptions: wrapExceptions);
throw new ArgumentException(SR.Arg_MustBeType, nameof(type));
}
private static ObjectHandle CreateInstanceInternal(string assemblyString,
string typeName,
bool ignoreCase,
BindingFlags bindingAttr,
Binder binder,
object[] args,
CultureInfo culture,
object[] activationAttributes,
ref StackCrawlMark stackMark)
{
Type type = null;
Assembly assembly = null;
if (assemblyString == null)
{
assembly = Assembly.GetExecutingAssembly(ref stackMark);
}
else
{
RuntimeAssembly assemblyFromResolveEvent;
AssemblyName assemblyName = RuntimeAssembly.CreateAssemblyName(assemblyString, out assemblyFromResolveEvent);
if (assemblyFromResolveEvent != null)
{
// Assembly was resolved via AssemblyResolve event
assembly = assemblyFromResolveEvent;
}
else if (assemblyName.ContentType == AssemblyContentType.WindowsRuntime)
{
// WinRT type - we have to use Type.GetType
type = Type.GetType(typeName + ", " + assemblyString, true /*throwOnError*/, ignoreCase);
}
else
{
// Classic managed type
assembly = RuntimeAssembly.InternalLoadAssemblyName(
assemblyName, ref stackMark);
}
}
if (type == null)
{
type = assembly.GetType(typeName, throwOnError: true, ignoreCase);
}
object o = CreateInstance(type, bindingAttr, binder, args, culture, activationAttributes);
return o != null ? new ObjectHandle(o) : null;
}
public static T CreateInstance<T>()
{
var rt = (RuntimeType)typeof(T);
// This is a workaround to maintain compatibility with V2. Without this we would throw a NotSupportedException for void[].
// Array, Ref, and Pointer types don't have default constructors.
if (rt.HasElementType)
throw new MissingMethodException(SR.Format(SR.Arg_NoDefCTor, rt));
// Skip the CreateInstanceCheckThis call to avoid perf cost and to maintain compatibility with V2 (throwing the same exceptions).
return (T)rt.CreateInstanceDefaultCtor(publicOnly: true, skipCheckThis: true, fillCache: true, wrapExceptions: true);
}
}
}
|
