New command line argument '--admit-non-public-types'

[skondratov]

Currently mpu.exe ignores internal types.
This feature introduces new argument '--admit-non-public-types', which can be used to make generator to consider non-public types.

[yfakariya]

Thank you for contribution, and it looks good to me.

But I have a question. As I answered in #226, the generated code or assembly should not work unless:

• The assembly will be friend assembly of the target type's assembly.
• The source code will be included in the target type's assembly.

Did you consider them?

[skondratov]

Hi @yfakariya,

The assembly will be friend assembly of the target type's assembly.
The source code will be included in the target type's assembly.

As any other internal functionality, i guess. Or may be i miss something?

In my case i serialize structures in same assembly where structures and serializers are placed. I did not test [InternalsVisibleTo].

Btw, i also generate so-called activator with RegisterOverride for serializers and MsgPack.Serialization.MessagePackSerializer.PrepareType for nested types. And everything is ok for my Unity iOs builds.

[yfakariya]

Hi @skondratov,

OK, I understand your intent. Thank you for contribution!