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Date: Wed, 11 Sep 2019 22:50:42 -0700 (PDT)
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Subject: Re: Complete Simple Examples of "Pragma Import (CPP,...) With
 Qualifiers?
From: godunko@adacore.com
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Xref: reader01.eternal-september.org comp.lang.ada:57135
Date: 2019-09-11T22:50:42-07:00
List-Id: <comp.lang.ada>

On Wednesday, September 11, 2019 at 9:16:04 PM UTC+3, Ruby_T...@gmail.com w=
rote:
>=20
> Are there other versions of this that I could see? What about C++ qualifi=
ers,  members in classes, and namespaces how are they referenced in the pra=
gma?
>=20
You need to use pragma CPP_Constructor to bind constructors. External_Names=
 are always mangled names, used by linker. Class fields may be mapped to re=
cord, but you need to control memory layout carefully. So, direct binding t=
o C++ is not so simple and it is very complicated to support it. I personal=
ly prefer to create C wrappers around C++ classes when possible, more code =
need to be produced, but you don't need to take care about low level C++ st=
uff mapping and update binding each time API/ABI changed or porting to anot=
her C++ compiler.