优化插件；

chr

2025-03-04 3f62d18e4361cd1d7a49c126765d95b2ad9c8246

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
using System;
using System.Collections.Generic;
using System.Linq;
using System.Reflection.Emit;
using System.Reflection;
using System.Text;
using System.Threading.Tasks;
 
namespace PdmSwPlugin.PropertySetting.Util
{
    public delegate void SetValueDelegate(object target, object arg);
 
    public static class PropSetter
    {
        public static SetValueDelegate CreatePropertySetter(PropertyInfo property)
        {
            if (property == null)
                throw new ArgumentNullException("property");
 
            if (!property.CanWrite)
                return null;
 
            MethodInfo setMethod = property.GetSetMethod(true);
 
            DynamicMethod dm = new DynamicMethod("PropertySetter", null,
                new Type[] { typeof(object), typeof(object) }, property.DeclaringType, true);
 
            ILGenerator il = dm.GetILGenerator();
 
            if (!setMethod.IsStatic)
            {
                il.Emit(OpCodes.Ldarg_0);
            }
            il.Emit(OpCodes.Ldarg_1);
 
            EmitCastToReference(il, property.PropertyType);
            if (!setMethod.IsStatic && !property.DeclaringType.IsValueType)
            {
                il.EmitCall(OpCodes.Callvirt, setMethod, null);
            }
            else
                il.EmitCall(OpCodes.Call, setMethod, null);
 
            il.Emit(OpCodes.Ret);
 
            return (SetValueDelegate)dm.CreateDelegate(typeof(SetValueDelegate));
        }
 
        private static void EmitCastToReference(ILGenerator il, Type type)
        {
            if (type.IsValueType)
                il.Emit(OpCodes.Unbox_Any, type);
            else
                il.Emit(OpCodes.Castclass, type);
        }
    }
}