Question over C++ to D conversion

[Richard]

Hi,
I'm sure this question has been asked a few times before
But I'm currently looking at something that will convert Cpp code 
to D

I've recently setup a proof of concept demo which uses mbed for 
an embedded LPC1769 Arm board
This is just a test, but I've recently managed to get debugging 
working across both C and D files at the same time.
This means single stepping code on a remotely attached Arm board 
in VSCode, while being able to inspect registers with an svd file
https://github.com/grbd/GBD.Dlang.MbedBlinkyTest

There's a couple of outstanding things at the moment though

The first is the use of BetterC, although from what I can tell 
DMD now has support for a minimal runtime feature as part of 
2.079.0
https://dlang.org/changelog/2.079.0.html#minimal_runtime
so hopefully when this makes it's way into LDC I can then make 
use of it for an Arm MCU for creating class's without the full 
runtime.
https://github.com/ldc-developers/ldc/pull/2587

These were also mentioned in a separate thread.
   * https://bitbucket.org/timosi/minlibd
   * https://github.com/JinShil/stm32f42_discovery_demo
   * https://github.com/kubo39/stm32f407discovery


The second is that mbed uses C++ class's for it's API
most of this is just headers such as DigitalOut.h
https://github.com/ARMmbed/mbed-os/blob/master/drivers/DigitalOut.h
So ideally I've been looking for something that can translate 
those headers into Dlang so they can be used there instead.

   * The first two utils I've found were DStep and htod, however 
they seem to only hand C
     https://github.com/jacob-carlborg/dstep

   * I discovered some examples of libraries over here
     https://github.com/D-Programming-Deimos

   * There's CPP2D but the last update was around 2016
     https://github.com/lhamot/CPP2D

   * Calypso seems to be a Fork of LDC, but I think it might be a 
while before 2.079.0 makes it in.
     https://github.com/Syniurge/Calypso

     One possibility I might look into is a D backend for CppSharp 
if I can figure it out, since I'm familiar with C#.
   * https://github.com/mono/CppSharp

I was wondering if there are any other ways that are known about 
for translating C++ into D, or accessing C++ libraries.

Many Thanks
Richard