[ragel-users] Actions embedded into unexpected transitions?

[Adrian Thurston]

I still can't see the problem. Can you restate it, if it's still an issue?

-Adrian

Dmitry Marakasov wrote:
> * Adrian Thurston (thurston at complang.org) wrote:
> 
>> Sorry I went to fast and didn't see your problem. My mail program was 
>> highlighting the lines beginning with ">", causing some confusion for me.
>>
>> The bit of info that you're missing is that action embedding operators 
>> bind more tightly than concatenation. Use:
>>
>> b := ( a 'b'+ ) >{print} %{print};
>>
>> and I think you'll get what you want.
> 
> That would be too easy :)
> 
> Actually that was just an example, the real cause is more complex,
> and my goal is to save all informaion encountered while parsing
> subexpression amd process it as a whole when it's finished. Like
> that:
> 
> char *a_start;
> char *a_end;
> 
> a = 'a'+
>     > { a_start = p; }
>     % { a_end = p; }
> ;
> 
> b = a 'b'+
>     > { a_start = a_end = 0; /* reset state */ }
>     % { printf("subexpr finished, there were %d a's\n", a_end-a_start); }
> ;
> 
> main := b+;
>