Open Source C/C++ Truffle languages available?

[Manuel Rigger]

Hi Gerard,

the Cover project sounds great!

We are also implementing a memory safe version of Sulong. The ideas for 
this version are described in the following paper: 
http://ssw.jku.at/General/Staff/ManuelRigger/ECOOP16-DS.pdf. Maybe you 
can apply some of the ideas from the paper to Cover, or give us feedback.

- Manuel

On 07/24/2016 05:07 PM, Chris Seaton wrote:
> That sounds like a great project!
>
> I think everything that would have been useful to you from TruffleC will have been re-implemented in Sulong. For example how to use our high performance native function interface, how to mix managed/native memory, and so on.
>
> TruffleC did have some interesting work to support ASTs that included constructs like ‘goto’. We can explain how that works to you if you need that later on.
>
> Chris
>
>> On 24 Jul 2016, at 15:53, Gerard Krol <gerard at gerardkrol.nl> wrote:
>>
>> Hello Chris,
>>
>> Thanks for your quick response. I'm interested in building a C++ like
>> language using Truffle, that would support a "sensible" subset of C++. It
>> would use garbage collection and provide memory safety though, as well as
>> other things that in my opinion are missing from C++. The language is
>> called "Cover" (for now).
>>
>> I'm basing Cover on SimpleLanguage, and am currently using the Eclipse CDT
>> C++ parser. Currently it is in the "hello world + loops" phase. If you want
>> to follow along take a look at https://github.com/gerard-/cover .
>>
>> Regards,
>>
>> Gerard
>>
>>
>> On Sun, Jul 24, 2016 at 3:19 PM, Chris Seaton <chris.seaton at oracle.com>
>> wrote:
>>
>>> Hello Gerard,
>>>
>>> The old C implementation was called TruffleC. It interpreted the C
>>> language AST. Sulong interprets the LLVM IR instead. That’s not really a
>>> huge difference in practice. LLVM IR is a bit like a linearised version of
>>> the AST and doesn’t include much lowering or optimisation. TruffleC uses
>>> the same clever hacks as Sulong.
>>>
>>> JRuby's C extensions (which are still at an early stage) used to use
>>> TruffleC, but they now use Sulong.
>>>
>>> TruffleC isn’t open source, and there aren’t any plans that I’m aware of
>>> to open source it. Sulong is open source already. If you were happy with
>>> the TruffleC approach there’s not any reason that I know of that would mean
>>> Sulong wouldn’t also be appropriate, so I see TruffleC as deprecated by
>>> Sulong which is why there isn’t a great demand to open source it.
>>>
>>> Chris
>>>
>>>> On 24 Jul 2016, at 09:12, Gerard Krol <gerard at gerardkrol.nl> wrote:
>>>>
>>>> Hi,
>>>>
>>>> I've recently learned about Tuffle/Graal. It seems great technology.
>>>>
>>>> I'm interested in running C++ code on the JVM, without resorting to the
>>>> (admittedly clever) Sulong hack. I've seen some presentations and read
>>> some
>>>> papers about a C implementation, but that one doesn't seem to be open
>>>> source. The same goes for the C extensions for JRuby. Is that correct?
>>>>
>>>> If so, what are the reasons for not open sourcing it? Any plans to do so
>>> in
>>>> the future?
>>>>
>>>> Regards,
>>>>
>>>> Gerard
>>>
>