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TAP::Parser::Iterator

Perl 5 version 12.0 documentation
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TAP::Parser::Iterator

NAME

TAP::Parser::Iterator - Internal base class for TAP::Parser Iterators

VERSION

Version 3.17

SYNOPSIS

  1. # see TAP::Parser::IteratorFactory for general usage
  2. # to subclass:
  3. use vars qw(@ISA);
  4. use TAP::Parser::Iterator ();
  5. @ISA = qw(TAP::Parser::Iterator);
  6. sub _initialize {
  7. # see TAP::Object...
  8. }

DESCRIPTION

This is a simple iterator base class that defines TAP::Parser's iterator API. See TAP::Parser::IteratorFactory for the preferred way of creating iterators.

METHODS

Class Methods

new

Create an iterator. Provided by TAP::Object.

Instance Methods

next

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

Iterate through it, of course.

next_raw

Note: this method is abstract and should be overridden.

  1. 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.

  1. my $wait_status = $iter->wait;

Return the wait status for this iterator.

exit

Note: this method is abstract and should be overridden.

  1. 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::IteratorFactory, TAP::Parser::Iterator::Array, TAP::Parser::Iterator::Stream, TAP::Parser::Iterator::Process,