Migrating dmd to D?

[Daniel Murphy]

"dennis luehring" <dl.soluz at gmx.net> wrote in message 
news:khkqug$v57$1 at digitalmars.com...
> Am 11.03.2013 15:20, schrieb Daniel Murphy:
>> "Daniel Murphy" <yebblies at nospamgmail.com> wrote in message
>> news:khfoa6$fm7$1 at digitalmars.com...
>>> "Daniel Murphy" <yebblies at nospamgmail.com> wrote in message
>>> news:kgumek$2tp4$1 at digitalmars.com...
>>>> "Zach the Mystic" <reachBUTMINUSTHISzach at gOOGLYmail.com> wrote in 
>>>> message
>>>> news:pabfuaorrjbljxzrglbv at forum.dlang.org...
>>>>>>
>>>>>> Something like this https://github.com/yebblies/magicport2 ?
>>>>>
>>>>> Yes! I need to look it over more thoroughly, but I couldn't ask for a
>>>>> better beginning. Can I trust that you'll be a willing part of future
>>>>> discussions on this matter, even if only to play Devil's Advocate?
>>>>
>>>> More like a full-blown attempt than a beginning.  I started this a long
>>>> time ago.
>>>>
>>>> There are three parts to it:
>>>> - c++ parser/d printer, with lots of cheating and special cases
>>>> - patches to the c++ source
>>>> - patched version of dmd to build the result (no error on variable
>>>> shadowing etc)
>>>>
>>>> It produces a 70000 line d file which appears to get through 3/7ths of
>>>> semantic1.  Root needs to be ported, and a cleaner interface to the
>>>> backend is needed to compile the glue layer.
>>>>
>>>
>>> Update: With the bulk of root converting or ported, and the glue layer
>>> stubbed out, I can build dmd from the converted source then lex and 
>>> parse
>>> the source (+druntime headers) again.
>>>
>>> The highlight was the dynamically resized struct in root/stringtable.
>>> Something went horribly wrong there.
>>
>> Update: I can now generate the source, then build a frontend from that, 
>> then
>> process the frontend's source again with the built compiler.  It also 
>> works
>> on the conversion tool, and pulls in a sizeable chunk of druntime and
>> phobos.
>
> do i get it right - you've converted the dmd C++ code with it?
>

Umm...

C++ compiler source -> my tool -> D source
D source -> normal dmd -> self-host dmd
D source -> self-host dmd -> no problems, but only the frontend so no code 
generation
tool source -> self-host dmd -> same thing