Re: Few bison issues

[Akim Demaille]

Le 6 févr. 2013 à 11:59, address@hidden a écrit :

> 3. In my project I switched from std::string* to boost::shared_ptr<const 
> std::string> type for storing filename in yy::position class. In order to do 
> this I use custom position.hh file. I think it may be good to modify bison 
> code so it will allow to provide type which will be used for storing 
> filenames.

I agree, but I'm not sure how to do this properly.  I need
to be able to initialize the filename, to "deference" it
to display and compare it etc.

Pointers are to be initialized with YY_NULL.  Templates can
help on this issue.

But how can I write code that would appropriately dereference
a pointer, and a shared_ptr?  This is less clear.

It should support things like

%define api.location.file.type {std::string}

%define api.location.file.type {std::string*}

%define api.location.file.type {std::shared_ptr<std::string>}

%define api.location.file.type {boost::flyweight<std::string>}