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TAP::Parser::Multiplexer(3pm)         Perl Programmers Reference Guide         TAP::Parser::Multiplexer(3pm)



NAME
       TAP::Parser::Multiplexer - Multiplex multiple TAP::Parsers

VERSION
       Version 3.23

SYNOPSIS
           use TAP::Parser::Multiplexer;

           my $mux = TAP::Parser::Multiplexer->new;
           $mux->add( $parser1, $stash1 );
           $mux->add( $parser2, $stash2 );
           while ( my ( $parser, $stash, $result ) = $mux->next ) {
               # do stuff
           }

DESCRIPTION
       "TAP::Parser::Multiplexer" gathers input from multiple TAP::Parsers.  Internally it calls select on
       the input file handles for those parsers to wait for one or more of them to have input available.

       See TAP::Harness for an example of its use.

METHODS
   Class Methods
       "new"

           my $mux = TAP::Parser::Multiplexer->new;

       Returns a new "TAP::Parser::Multiplexer" object.

   Instance Methods
       "add"

         $mux->add( $parser, $stash );

       Add a TAP::Parser to the multiplexer. $stash is an optional opaque reference that will be returned
       from "next" along with the parser and the next result.

       "parsers"

         my $count   = $mux->parsers;

       Returns the number of parsers. Parsers are removed from the multiplexer when their input is
       exhausted.

       "next"

       Return a result from the next available parser. Returns a list containing the parser from which the
       result came, the stash that corresponds with that parser and the result.

           my ( $parser, $stash, $result ) = $mux->next;

       If $result is undefined the corresponding parser has reached the end of its input (and will
       automatically be removed from the multiplexer).

       When all parsers are exhausted an empty list will be returned.

           if ( my ( $parser, $stash, $result ) = $mux->next ) {
               if ( ! defined $result ) {
                   # End of this parser
               }
               else {
                   # Process result
               }
           }
           else {
               # All parsers finished
           }

See Also
       TAP::Parser

       TAP::Harness



perl v5.16.2                                     2012-10-25                    TAP::Parser::Multiplexer(3pm)