blob: 51b3fdbf28a731039f829ff9aa05eac7433b4233 (
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
58
59
60
61
62
63
64
65
66
|
using System;
using System.Collections.Generic;
using System.Reflection;
using Mono.Cecil;
using Mono.Cecil.Cil;
using MethodAttributes = Mono.Cecil.MethodAttributes;
using MethodImplAttributes = Mono.Cecil.MethodImplAttributes;
namespace Xamarin.Forms.Build.Tasks
{
static class TypeDefinitionExtensions
{
public static MethodDefinition AddDefaultConstructor(this TypeDefinition targetType)
{
var parentType = typeof (object);
return AddDefaultConstructor(targetType, parentType);
}
public static MethodDefinition AddDefaultConstructor(this TypeDefinition targetType, Type parentType)
{
var module = targetType.Module;
var voidType = module.Import(typeof (void));
var methodAttributes = MethodAttributes.Public |
MethodAttributes.HideBySig |
MethodAttributes.SpecialName |
MethodAttributes.RTSpecialName;
var flags = BindingFlags.Public |
BindingFlags.NonPublic |
BindingFlags.Instance;
var objectConstructor = parentType.GetConstructor(flags, null, new Type[0], null);
if (objectConstructor == null)
objectConstructor = typeof (object).GetConstructor(new Type[0]);
var baseConstructor = module.Import(objectConstructor);
var ctor = new MethodDefinition(".ctor", methodAttributes, voidType)
{
CallingConvention = MethodCallingConvention.Default,
ImplAttributes = (MethodImplAttributes.IL | MethodImplAttributes.Managed)
};
var IL = ctor.Body.GetILProcessor();
IL.Emit(OpCodes.Ldarg_0);
IL.Emit(OpCodes.Call, baseConstructor);
IL.Emit(OpCodes.Ret);
targetType.Methods.Add(ctor);
return ctor;
}
public static IEnumerable<MethodDefinition> AllMethods(this TypeDefinition self)
{
while (self != null)
{
foreach (var md in self.Methods)
yield return md;
self = self.BaseType == null ? null : self.BaseType.Resolve();
}
}
}
}
|