-
Notifications
You must be signed in to change notification settings - Fork 1.7k
/
TypeDefinitionExtensions.cs
60 lines (51 loc) · 1.93 KB
/
TypeDefinitionExtensions.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
59
60
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 module = targetType.Module;
var parentType = module.ImportReference(("mscorlib", "System", "Object"));
return AddDefaultConstructor(targetType, parentType);
}
public static MethodDefinition AddDefaultConstructor(this TypeDefinition targetType, TypeReference parentType)
{
var module = targetType.Module;
var voidType = module.ImportReference(("mscorlib", "System", "Void"));
var methodAttributes = MethodAttributes.Public |
MethodAttributes.HideBySig |
MethodAttributes.SpecialName |
MethodAttributes.RTSpecialName;
var parentctor = module.ImportCtorReference(parentType, paramCount: 0) ?? module.ImportCtorReference(("mscorlib", "System", "Object"), parameterTypes: null);
var ctor = new MethodDefinition(".ctor", methodAttributes, voidType)
{
CallingConvention = MethodCallingConvention.Default,
ImplAttributes = (MethodImplAttributes.IL | MethodImplAttributes.Managed)
};
ctor.Body.InitLocals = true;
var IL = ctor.Body.GetILProcessor();
IL.Emit(OpCodes.Ldarg_0);
IL.Emit(OpCodes.Call, parentctor);
IL.Emit(OpCodes.Ret);
targetType.Methods.Add(ctor);
return ctor;
}
public static IEnumerable<(MethodDefinition methodDef, TypeReference declTypeRef)> AllMethods(this TypeDefinition self)
{
TypeReference selfTypeRef = self;
while (self != null) {
foreach (var md in self.Methods)
yield return (md, selfTypeRef);
selfTypeRef = self.BaseType;
self = self.BaseType?.ResolveCached();
}
}
}
}