Re: Hello, How to parse lists?

Hi Jens,

First, the list parser ("%") doesn't need the kleen star ("*") before it, since it parsers one or more entries into a list.
Second, the list parsers is "WHAT to parse, delimited by WHAT" ("entry % delimiter"), so change:

symbol_def_parameter =
     (symbol_parameter >> symbol_alpha >> *(qi::char_(',') % symbol_alpha))
     ;

...into this (one or more entries in list):

symbol_def_parameter =
     (symbol_parameter >> (symbol_alpha  % qi::char_(',')))
     ;

... or, if you want ZERO or more entries in your list (notice the minus character that means optional):

symbol_def_parameter =
     (symbol_parameter >> -(symbol_alpha  % qi::char_(',')))
     ;

Regards,
  Mikael

-----Original Message-----
From: Jens Kallup [mailto:[email protected]] 
Sent: Saturday, October 29, 2016 13:11
To: Spirit General Mailing List <[email protected]>
Subject: [Spirit-general] Hello, How to parse lists?

Hello,

How to parse "parameter ccc , ccc, ggg, ddd" ? dynamical - not static!
I get success: "parameter ccc, vv vvv vvv", and this is wrong.

TIA for help
Jens

This rule, I use, is wrong:

   symbol_def_parameter =
     (symbol_parameter >> symbol_alpha >> *(qi::char_(',') % symbol_alpha))
     ;

              symbol_alpha =
                   qi::char_("a-zA-Z_") >>
                  *qi::char_("a-zA-Z0-9_")
                  ;

symbol_parameter = no_case["parameter"];


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