Re: How can I use namespaces with the C++ interface ?

[Hans Aberg]

On 28 Jun 2012, at 14:55, Timothy Madden wrote:

> On 06/28/2012 12:38 PM, Hans Aberg wrote:
>> On 22 Jun 2012, at 19:42, Timothy Madden wrote:
>> 
>>> How could I use a namespace like yy (the same way bison does) for the 
>>> generated scanner with the C++ interface ?
>>> 
>>> I tried to open "namespace yy {" at the %top of the file, and to close it 
>>> "}" at the bottom, but all the included standard headers in the generated 
>>> scanner would be included in the namespace yy this way, instead of the 
>>> expected global namespace.
>>> 
>>> I had no other idea than to explicitly include the C/C++ standard headers 
>>> used by the scanner before I open the yy namespaces, at the top of the 
>>> file, so that when the scanner later includes them, they will each see they 
>>> have been already included and skip over any included content.
>>> 
>>> Can namespaces please be added to flex C++ interface ?
>> 
>> Flex does not currently have active developers, and the C++ lexer was 
>> written a long time ago, before namespaces was a part of C++. You might try 
>> modifying the skeleton file, though.

> Are there alternative projects that can be used with bison and are still 
> being developed or are better than flex ?

[Please keep the cc to the list, so others can follow the issue.]

Not what I am aware of - I add a cc to the Bison help list, to see if somebody 
there knows more.

Bison should be synced with Flex, but as the latter isn't currently being 
developed, that limits.

Hans