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digitalmars.D.announce - C++ to D converter based on clang

reply =?UTF-8?B?TG/Dr2M=?= HAMOT <loic.hamot yahoo.fr> writes:
Hello,

I am working on a C++ to D converter.
The project is opensource, on github : 
https://github.com/lhamot/CPP2D

Clang is used to parse the C++ code and get the abstract syntax 
tree. Then I can visit the AST to print it to D language.
Some tricks are used to convert the simplest macros to mixin.

Some C++ features which are not straightforward to convert are 
already handled, like (A not exhaustive list):
     class
         constructor/destructor
         virtual
         abstract
         override
         initialization list
         call base constructor
     Operator overloading
         member
         free
             left or right
     Template
         function
         function specialization
         class
         class/struct specialization
         class/struct partial specialization
     arrays
         static
         dynamic

Some examples here : 
https://github.com/lhamot/CPP2D/wiki/Conversion-samples

If somebody is interested to use this software, or to 
participate, do not hesitate to contact me.

Regards
May 28 2016
next sibling parent reply Seb <seb wilzba.ch> writes:
On Saturday, 28 May 2016 at 11:02:37 UTC, Loïc HAMOT wrote:

 Hello,

 I am working on a C++ to D converter.
 The project is opensource, on github : 
 https://github.com/lhamot/CPP2D

 Clang is used to parse the C++ code and get the abstract syntax 
 tree. Then I can visit the AST to print it to D language.
 Some tricks are used to convert the simplest macros to mixin.

 Some C++ features which are not straightforward to convert are 
 already handled, like (A not exhaustive list):
     class
         constructor/destructor
         virtual
         abstract
         override
         initialization list
         call base constructor
     Operator overloading
         member
         free
             left or right
     Template
         function
         function specialization
         class
         class/struct specialization
         class/struct partial specialization
     arrays
         static
         dynamic

 Some examples here : 
 https://github.com/lhamot/CPP2D/wiki/Conversion-samples

 If somebody is interested to use this software, or to 
 participate, do not hesitate to contact me.

 Regards


That's a great project! IIRC Walter still searches for someone to 
convert the dmd backend to D.
Btw do you know about Daniel's porting tool that was used to 
migrate the dmd frontend to D?
https://github.com/yebblies/magicport2
May 28 2016
parent =?UTF-8?B?TG/Dr2M=?= HAMOT <loic.hamot yahoo.fr> writes:
On Saturday, 28 May 2016 at 11:26:23 UTC, Seb wrote:

 On Saturday, 28 May 2016 at 11:02:37 UTC, Loïc HAMOT wrote:

 Hello,

 I am working on a C++ to D converter.
 The project is opensource, on github : 
 https://github.com/lhamot/CPP2D

 [...]

 If somebody is interested to use this software, or to 
 participate, do not hesitate to contact me.

 Regards


 That's a great project! IIRC Walter still searches for someone 
 to convert the dmd backend to D.
 Btw do you know about Daniel's porting tool that was used to 
 migrate the dmd frontend to D?
 https://github.com/yebblies/magicport2


I gave a try to magicport2, but I read it is specifically done 
for DMD. Moreover is seams to have some limitations which don't 
fit for my needs : template, C++11, ...
I also tried the cpp2d project inside VisualD. But is has also 
many limitations in the C++ features it can parse (and the parser 
is pretty hard to extend).
This is why I finally decided to use an existing, robust and 
reusable C++ parser : clang.

I am far away to be able to convert the full DMD backend, but 
this is a very interesting challenge!
May 28 2016
prev sibling next sibling parent Steven Schveighoffer <schveiguy yahoo.com> writes:
On Saturday, 28 May 2016 at 11:02:37 UTC, Loïc HAMOT wrote:

 Hello,

 I am working on a C++ to D converter.
 The project is opensource, on github : 
 https://github.com/lhamot/CPP2D

 [...]


Very nice! Looking at your examples, you should know that the 
default protection in D classes is public.

-Steve
May 28 2016
prev sibling next sibling parent Stefan Koch <uplink.coder googlemail.com> writes:
On Saturday, 28 May 2016 at 11:02:37 UTC, Loïc HAMOT wrote:

 Hello,

 I am working on a C++ to D converter.
 The project is opensource, on github : 
 https://github.com/lhamot/CPP2D

 [...]


Interesting!
May 28 2016
prev sibling parent reply Jacob Carlborg <doob me.com> writes:
On 2016-05-28 13:02, Loïc HAMOT wrote:

 Hello,

 I am working on a C++ to D converter.
 The project is opensource, on github : https://github.com/lhamot/CPP2D


Is there a reason to reinvent the wheel instead of contributing to DStep 
[1]?

[1] https://github.com/jacob-carlborg/dstep

-- 
/Jacob Carlborg
May 31 2016
parent reply =?UTF-8?B?TG/Dr2M=?= HAMOT <loic.hamot yahoo.fr> writes:
On Wednesday, 1 June 2016 at 06:45:09 UTC, Jacob Carlborg wrote:

 On 2016-05-28 13:02, Loïc HAMOT wrote:

 Hello,

 I am working on a C++ to D converter.
 The project is opensource, on github : 
 https://github.com/lhamot/CPP2D


 Is there a reason to reinvent the wheel instead of contributing 
 to DStep [1]?

 [1] https://github.com/jacob-carlborg/dstep


Hello Jacob.
It think DStep and CPP2D have very different objectives.
DStep target C and Objective-C headers, but CPP2D target C++ full 
source code.

Maybe do you think I could participate to DStep in order to 
extend it to full C++ source handling?
Yes I could. Like I could participate to VisualD/cpp2d or 
magicport2 projects.

But the reason why I didn't is I want to test the feasibility of 
a C++ to D conversion using the clang parser.
Now, I think I passed the proof of concept step, and merge my 
work in an other project is not out of the question.
Jun 01 2016
parent reply Jacob Carlborg <doob me.com> writes:
On 2016-06-01 10:55, Loïc HAMOT wrote:


 Hello Jacob.
 It think DStep and CPP2D have very different objectives.
 DStep target C and Objective-C headers, but CPP2D target C++ full source
 code.


No. Targeting C++ is not against the objectives of DStep. C and 
Objective-C just happens to be what DStep currently supports. It make 
sense to start with C since it's a subset of both Objective-C and C++. 
Also, when I started the C++ support in D didn't exist or was very limited.


 Maybe do you think I could participate to DStep in order to extend it to
 full C++ source handling?


Yes ;)


 Yes I could. Like I could participate to VisualD/cpp2d or magicport2
 projects.


Anything that is not using a real front end is a lost cause.


 But the reason why I didn't is I want to test the feasibility of a C++
 to D conversion using the clang parser.


I don't see a reason why it was necessary to create a completely new 
project for that.


 Now, I think I passed the proof of concept step, and merge my work in an
 other project is not out of the question.


Not sure how easy it would be to integrate in DStep. I'm guessing you're 
using the C++ API while DStep is written in D and is using the C API.

-- 
/Jacob Carlborg
Jun 01 2016
parent reply Daniel Murphy <yebbliesnospam gmail.com> writes:
On 1/06/2016 9:40 PM, Jacob Carlborg wrote:

 Yes I could. Like I could participate to VisualD/cpp2d or magicport2
 projects.


 Anything that is not using a real front end is a lost cause.


Haha that really depends on your goals.
Jun 01 2016
parent Jacob Carlborg <doob me.com> writes:
On 2016-06-01 14:50, Daniel Murphy wrote:


 Haha that really depends on your goals.


Yeah, I know magicport can translate DMD. The goal there is to translate 
arbitrary C++ code to D.

-- 
/Jacob Carlborg
Jun 02 2016