Re: Not able to use x3::skip(skipper)[some recursive rule] in its rule definition

On 07/25/2017 09:54 AM, Larry Evans wrote:
> On 07/25/2017 09:18 AM, Han Wang wrote:
>> Hi Larry,
>>
>> I think we cannot just change make_context to make_unique_context here 
>> in x3::skip_directive. If there already is a skipper in the context 
>> (x3::space e.g), the new skipper (ruleComment) will be ignored 
>> (because x3::make_unique_context will simply return the original 
>> context).
>>
> [snip]
> Good catch.  I had assumed that context<ID,val,NEXT> was a dictionary
> with only 1 value for given ID.  However, I guess there could be
> several entries where ID==skipper_tag and only the 1st one is retrieved
> by the context.get<ID_>(ID_) member function.  I guess there's some
> method to pop the top value with given ID off the context stack.
> 
> In that case, I've no idea how to solve the problem.
> 
> Sorry :(
> 
> -regards,
> Larry
> 

I kept trying and *maybe* this:

https://github.com/cppljevans/spirit/blob/get_rhs/include/boost/spirit/home/x3/directive/skip.hpp#L85

will solve problem.  It did successfully compile & run your test
program.

HTH.

-regards,
Larry



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