Mono x86-32 forge MonoVTable reference of MonoObject

[RawCode]

subj:

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[MethodImpl(MethodImplOptions.NoInlining)]
static public void ForgeObjectType
(
object Target,
Type Newtype
)
{
MethodInfo _CII = typeof(Activator).GetMethod ("CreateInstanceInternal", (BindingFlags)60);
object vtablesource = _CII.Invoke (null, new object[]{ Newtype });
UnionHack.Cast (Target)[0] = UnionHack.Cast (vtablesource)[0];
}

union hack definition:

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[StructLayout(LayoutKind.Explicit)]
public unsafe struct UnionHack
{
[FieldOffset(0)] public object arg;
[FieldOffset(0)] public int*   ret;

static private UnionHack INSTANCE = new UnionHack ();

static public int* Cast(object o)
{
INSTANCE.arg = o;
return INSTANCE.ret;
}

private void illayer()
{
DynamicMethod dm = new DynamicMethod("void",typeof(int),new Type[]{typeof(object)});
ILGenerator ilg = dm.GetILGenerator ();
ilg.Emit (OpCodes.Ldarg_0);
ilg.Emit (OpCodes.Conv_I);
ilg.Emit (OpCodes.Ret);
}
}


1) unsafe cast, string to ArrayList anyone
2) full access to private fields with native performance levels
3) memcopy for objects
4) other funny applications

[1000101]

Interesting bit of code.  Could you provide a simple example of usage?

I had heard (via a third party's testing) that the mono library / unity engine that RimWorld ships with, there was no access to the compiler services library.  I have tried similar things in the past which worked just fine when compiling against mono/.Net 3.5 but failed entirely within RimWorld.

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illayer() is not used and provided for reference only.

mono library provided with game have large number of methods removed from export table, including mono_reflection_create_dynamic_method essential for dynamic code.

But...
this is not safety measure and just filter for lazy hackers, who care about dynamic methods when you allowed to load arbitrary DLLs?