Detecting outcome of parsing

Hi,

 

I have a parser set up for a command based language which is entered via a
command line.  This is all working fine.

 

As the user enters the command I would like to issue feedback to the user as
to the correctness of the command syntax written so far and provide feedback
at the point where the user tries to enter something that would not
successfully parse. provide a beep rather than accepting the keystroke.

 

What I really need is to submit the command to the parser as it is assembled
and I need a status which says yes parses ok up until the end of input but
needs more input.

 

The bool returned from parse returns true if the command would parse to
successful completion.  I want a status which says it parses successfully up
to the end of input but needs more input.

 

Anybody know of the best way of achieving this with the spirit parser

 

Many thanks,

Kind Regards,

Callum.

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