Calypso: Direct and full interfacing to C++

[Elie Morisse via Digitalmars-d-announce]

On Monday, 9 February 2015 at 04:27:06 UTC, Kelly wrote:
>> Thanks, just got that tangled mess of templates that is 
>> std::string working too:
>
> Hey Elie, this is great stuff, as usual. I have written a test 
> file for bitset here also (including a couple failures I am 
> sure you are aware of, but others might want to see what works 
> and what doesn't).
>


Hi Kelly,

Good to see bitset instantiating and basically working too! Can I 
add your code to the tests?

So yes to clear things up a bit, operators are still missing and 
so are many other features. Off the top of my head:

  - Function templates => the groundwork is here, they're already 
mapped and it
shouldn't be too difficult to get them instantiating from D
  - Operators => probably easy to add although there might be 
differences between C++ and D operators
  - Functions with class values parameters aren't even mapped yet, 
since I haven't made my mind on how to handle class values. 
Despite the "POD or not" issue it still feels more consistent to 
treat C++ classes like D classes, while adding C++ class value 
types to DMD's types like C++ reference types were with 
TypeReference (which makes C++ variables with reference types 
usable but which can't be assigned as the types of D variables)
  - C++ reference types are supported by DMD but not by LDC yet, 
they only work for function parameters and return types since 
Calypso replace them by "ref"