Hi Max,
You have to create a new MethodReference, with a declaring type being
the type of the parameter which is the nullable generic instance.
The best way to have something running, is to write what you want to
have as a result, read the assembly with Cecil, analyse the code that
is read and that will be generated, and do the same.
Jb
On 6/14/07, Max Bolingbroke <[EMAIL PROTECTED]> wrote:
>
> Fabian Schmied wrote:
> >> Since I can't see a reply, I guess my email trying to clear this up has
> >> still left you confused :-). Can you maybe be a little more specific
> >> about what I need to explain better? I gave some C# code to try and
> >> illustrate it already..
> >>
> >
> > You say you want to emit code like this:
> >
> >> ldarga bar
> >> call [mscorlib]System.Nullable`1<int>.get_HasValue
> >> brtrue LABEL
> >> ldstr "bar"
> >> ldstr "Yes this is a stupid example"
> >> newobj [mscorlib]System.ArgumentNullException
> >> throw
> >> LABEL: nop
> >> // Some stuff goes here
> >>
> >
> > But you need to substitute Nullable`1<int> with other nullable types, right?
> >
> > So you can't use this code:
> >
> >> this.module.Import(typeof(Nullable<int>).GetProperty("HasValue").GetGetMethod())
> >>
> >
> > But when emitting the code, you probably know the concrete nullable
> > types you want to work with, right? So, if you have nullable type NT
> > at the time of emitting code, why not just do this:
> >
> >
> >> this.module.Import(typeof(NT).GetProperty("HasValue").GetGetMethod())
> >>
> >
> > ?
> >
> > I'm probably missing something, but maybe you could elaborate on what it is.
> >
> > Fabian
> >
> Hi Fabian, thanks for your reply.
>
> I can't do what you suggest, though I would love to. The problem is that
> I don't know the nullable type at compile time because I am
> instrumenting arbitrary user code. Essentially I am trying to create the
> equivalent of the Default macro provided in Boo, but for arbitrary .NET
> languages. I also can't get the nullable Type object at runtime because
> I only have the TypeReference from Cecil, which is hard to change into a
> .NET capital T Type.
>
> Cheers,
> Max
>
>
>
> >
>
--
Jb
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