# man > TAP::Parser::SourceHandler::Executable

## NAME
    [TAP::Parser::SourceHandler::Executable](https://www.chedong.com/phpMan.php/perldoc/TAP%3A%3AParser%3A%3ASourceHandler%3A%3AExecutable/markdown) - Stream output from an executable TAP source

## VERSION
    Version 3.44

## SYNOPSIS
      use [TAP::Parser::Source](https://www.chedong.com/phpMan.php/perldoc/TAP%3A%3AParser%3A%3ASource/markdown);
      use [TAP::Parser::SourceHandler::Executable](https://www.chedong.com/phpMan.php/perldoc/TAP%3A%3AParser%3A%3ASourceHandler%3A%3AExecutable/markdown);

      my $source = [TAP::Parser::Source](https://www.chedong.com/phpMan.php/perldoc/TAP%3A%3AParser%3A%3ASource/markdown)->new->raw(['/usr/bin/ruby', 'mytest.rb']);
      $source->assemble_meta;

      my $class = '[TAP::Parser::SourceHandler::Executable](https://www.chedong.com/phpMan.php/perldoc/TAP%3A%3AParser%3A%3ASourceHandler%3A%3AExecutable/markdown)';
      my $vote  = $class->can_handle( $source );
      my $iter  = $class->make_iterator( $source );

## DESCRIPTION
    This is an *executable* [TAP::Parser::SourceHandler](https://www.chedong.com/phpMan.php/perldoc/TAP%3A%3AParser%3A%3ASourceHandler/markdown) - it has 2 jobs:

    1. Figure out if the [TAP::Parser::Source](https://www.chedong.com/phpMan.php/perldoc/TAP%3A%3AParser%3A%3ASource/markdown) it's given is an executable command ("can_handle").

    2. Creates an iterator for executable commands ("make_iterator").

    Unless you're writing a plugin or subclassing [TAP::Parser](https://www.chedong.com/phpMan.php/perldoc/TAP%3A%3AParser/markdown), you probably won't need to use this
    module directly.

## METHODS
### Class Methods
   "can_handle"
      my $vote = $class->can_handle( $source );

    Only votes if $source looks like an executable file. Casts the following votes:

      0.9  if it's a hash with an 'exec' key
      0.8  if it's a .bat file
      0.75 if it's got an execute bit set

   "make_iterator"
      my $iterator = $class->make_iterator( $source );

    Returns a new [TAP::Parser::Iterator::Process](https://www.chedong.com/phpMan.php/perldoc/TAP%3A%3AParser%3A%3AIterator%3A%3AProcess/markdown) for the source. "$source->raw" must be in one of
    the following forms:

      { exec => [ @exec ] }

      [ @exec ]

      $file

    "croak"s on error.

   "iterator_class"
    The class of iterator to use, override if you're sub-classing. Defaults to
    [TAP::Parser::Iterator::Process](https://www.chedong.com/phpMan.php/perldoc/TAP%3A%3AParser%3A%3AIterator%3A%3AProcess/markdown).

## SUBCLASSING
    Please see "SUBCLASSING" in [TAP::Parser](https://www.chedong.com/phpMan.php/perldoc/TAP%3A%3AParser/markdown) for a subclassing overview.

### Example
      package MyRubySourceHandler;

      use strict;

      use Carp qw( croak );
      use [TAP::Parser::SourceHandler::Executable](https://www.chedong.com/phpMan.php/perldoc/TAP%3A%3AParser%3A%3ASourceHandler%3A%3AExecutable/markdown);

      use base '[TAP::Parser::SourceHandler::Executable](https://www.chedong.com/phpMan.php/perldoc/TAP%3A%3AParser%3A%3ASourceHandler%3A%3AExecutable/markdown)';

      # expect $handler->(['mytest.rb', 'cmdline', 'args']);
      sub make_iterator {
        my ($self, $source) = @_;
        my @test_args = @{ $source->test_args };
        my $rb_file   = $test_args[0];
        croak("error: Ruby file '$rb_file' not found!") unless (-f $rb_file);
        return $self->[SUPER::raw_source](https://www.chedong.com/phpMan.php/perldoc/SUPER%3A%3Arawsource/markdown)(['/usr/bin/ruby', @test_args]);
      }

## SEE ALSO
    [TAP::Object](https://www.chedong.com/phpMan.php/perldoc/TAP%3A%3AObject/markdown), [TAP::Parser](https://www.chedong.com/phpMan.php/perldoc/TAP%3A%3AParser/markdown), [TAP::Parser::IteratorFactory](https://www.chedong.com/phpMan.php/perldoc/TAP%3A%3AParser%3A%3AIteratorFactory/markdown), [TAP::Parser::SourceHandler](https://www.chedong.com/phpMan.php/perldoc/TAP%3A%3AParser%3A%3ASourceHandler/markdown),
    [TAP::Parser::SourceHandler::Perl](https://www.chedong.com/phpMan.php/perldoc/TAP%3A%3AParser%3A%3ASourceHandler%3A%3APerl/markdown), [TAP::Parser::SourceHandler::File](https://www.chedong.com/phpMan.php/perldoc/TAP%3A%3AParser%3A%3ASourceHandler%3A%3AFile/markdown),
    [TAP::Parser::SourceHandler::Handle](https://www.chedong.com/phpMan.php/perldoc/TAP%3A%3AParser%3A%3ASourceHandler%3A%3AHandle/markdown), [TAP::Parser::SourceHandler::RawTAP](https://www.chedong.com/phpMan.php/perldoc/TAP%3A%3AParser%3A%3ASourceHandler%3A%3ARawTAP/markdown)