Exception behavior with errno

[dmitry-kazakov]

@sbenitezb

I saw on your Simple-Components that you had it, but I wanted code generation. I don’t remember if your implementation generates code or only de/serialize from Ada types.

The idea is that no code is needed, except for declarations of Ada types. You describe an ASN.1 packet as single Ada record type. There is a direct mapping from ASN.1 syntax to Ada. E.g.

SEQUENCE
{  A [0] INTEGER,
   B [1] IMPLICIT INTEGER,
   C [2] IMPLICIT INTEGER,
   D [3] IMPLICIT INTEGER
}

becomes

type Four_Integers is new Tagged_Sequence_Data_Item with record
   A : Integer_Data_Item;
   B : Implicit_Integer_Data_Item;
   C : Implicit_Integer_Data_Item;
   D : Implicit_Integer_Data_Item;
end record;

So there is little need to generate that. The record type can be directly used in I/O communication, e.g. you tell the communication layer that this record is to the packet. Then when you get a callback on data received the record is already filled with decoded data. That is.

[JC001]

@sbenitezb

That only works locally, which is fine for my current purposes, but it would prevent me from connecting a GUI to a remote machine if I ever wanted to do that.

You might want to consider Gnoga for your GUI. It is all Ada, works on any platform with a browser, can be used locally, and easily allows remote use as well.