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

NAME

       TAP::Parser::Iterator - Base class for TAP source iterators

VERSION

       Version 3.23

SYNOPSIS

	 # to subclass:
	 use vars qw(@ISA);
	 use TAP::Parser::Iterator ();
	 @ISA = qw(TAP::Parser::Iterator);
	 sub _initialize {
	   # see TAP::Object...
	 }

	 sub next_raw { ... }
	 sub wait     { ... }
	 sub exit     { ... }

DESCRIPTION

       This is a simple iterator base class that defines TAP::Parser's iterator API.  Iterators are typically created from
       TAP::Parser::SourceHandlers.

METHODS

   Class Methods
       "new"

       Create an iterator.  Provided by TAP::Object.

   Instance Methods
       "next"

	while ( my $item = $iter->next ) { ... }

       Iterate through it, of course.

       "next_raw"

       Note: this method is abstract and should be overridden.

	while ( my $item = $iter->next_raw ) { ... }

       Iterate raw input without applying any fixes for quirky input syntax.

       "handle_unicode"

       If necessary switch the input stream to handle unicode. This only has any effect for I/O handle based streams.

       The default implementation does nothing.

       "get_select_handles"

       Return a list of filehandles that may be used upstream in a select() call to signal that this Iterator is ready. Iterators that are not
       handle-based should return an empty list.

       The default implementation does nothing.

       "wait"

       Note: this method is abstract and should be overridden.

	my $wait_status = $iter->wait;

       Return the "wait" status for this iterator.

       "exit"

       Note: this method is abstract and should be overridden.

	my $wait_status = $iter->exit;

       Return the "exit" status for this iterator.

SUBCLASSING

       Please see "SUBCLASSING" in TAP::Parser for a subclassing overview.

       You must override the abstract methods as noted above.

   Example
       TAP::Parser::Iterator::Array is probably the easiest example to follow.	There's not much point repeating it here.

SEE ALSO

       TAP::Object, TAP::Parser, TAP::Parser::Iterator::Array, TAP::Parser::Iterator::Stream, TAP::Parser::Iterator::Process,

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