#$@%#$%!

Ngiler SH3LL 360
: / usr / share / perl5 / vendor_perl / TAP / Parser /

Information Server
MySQL : OFF Perl : OFF CURL : ON WGET : OFF PKEXEC : OFF

Directive	Local Value
IP Address	162.0.209.101
System	Linux premium169.web-hosting.com 4.18.0-553.50.1.lve.el8.x86_64 #1 SMP Thu Apr 17 19:10:24 UTC 2025 x86_64
User	luxeelil
PHP Version	8.0.30
Software	LiteSpeed
Doc root	Writable

Edit File : IteratorFactory.pm \| Size : 8.11 KB
package TAP::Parser::IteratorFactory; use strict; use warnings; use Carp qw( confess ); use File::Basename qw( fileparse ); use base 'TAP::Object'; use constant handlers => []; =head1 NAME TAP::Parser::IteratorFactory - Figures out which SourceHandler objects to use for a given Source =head1 VERSION Version 3.42 =cut our $VERSION = '3.42'; =head1 SYNOPSIS use TAP::Parser::IteratorFactory; my $factory = TAP::Parser::IteratorFactory->new({ %config }); my $iterator = $factory->make_iterator( $filename ); =head1 DESCRIPTION This is a factory class that takes a L<TAP::Parser::Source> and runs it through all the registered L<TAP::Parser::SourceHandler>s to see which one should handle the source. If you're a plugin author, you'll be interested in how to L</register_handler>s, how L</detect_source> works. =head1 METHODS =head2 Class Methods =head3 C<new> Creates a new factory class: my $sf = TAP::Parser::IteratorFactory->new( $config ); C<$config> is optional. If given, sets L</config> and calls L</load_handlers>. =cut sub _initialize { my ( $self, $config ) = @_; $self->config( $config \|\| {} )->load_handlers; return $self; } =head3 C<register_handler> Registers a new L<TAP::Parser::SourceHandler> with this factory. __PACKAGE__->register_handler( $handler_class ); =head3 C<handlers> List of handlers that have been registered. =cut sub register_handler { my ( $class, $dclass ) = @_; confess("$dclass must implement can_handle & make_iterator methods!") unless UNIVERSAL::can( $dclass, 'can_handle' ) && UNIVERSAL::can( $dclass, 'make_iterator' ); my $handlers = $class->handlers; push @{$handlers}, $dclass unless grep { $_ eq $dclass } @{$handlers}; return $class; } ############################################################################## =head2 Instance Methods =head3 C<config> my $cfg = $sf->config; $sf->config({ Perl => { %config } }); Chaining getter/setter for the configuration of the available source handlers. This is a hashref keyed on handler class whose values contain config to be passed onto the handlers during detection & creation. Class names may be fully qualified or abbreviated, eg: # these are equivalent $sf->config({ 'TAP::Parser::SourceHandler::Perl' => { %config } }); $sf->config({ 'Perl' => { %config } }); =cut sub config { my $self = shift; return $self->{config} unless @_; unless ( 'HASH' eq ref $_[0] ) { $self->_croak('Argument to &config must be a hash reference'); } $self->{config} = shift; return $self; } sub _last_handler { my $self = shift; return $self->{last_handler} unless @_; $self->{last_handler} = shift; return $self; } sub _testing { my $self = shift; return $self->{testing} unless @_; $self->{testing} = shift; return $self; } ############################################################################## =head3 C<load_handlers> $sf->load_handlers; Loads the handler classes defined in L</config>. For example, given a config: $sf->config({ MySourceHandler => { some => 'config' }, }); C<load_handlers> will attempt to load the C<MySourceHandler> class by looking in C<@INC> for it in this order: TAP::Parser::SourceHandler::MySourceHandler MySourceHandler C<croak>s on error. =cut sub load_handlers { my ($self) = @_; for my $handler ( keys %{ $self->config } ) { my $sclass = $self->_load_handler($handler); # TODO: store which class we loaded anywhere? } return $self; } sub _load_handler { my ( $self, $handler ) = @_; my @errors; for my $dclass ( "TAP::Parser::SourceHandler::$handler", $handler ) { return $dclass if UNIVERSAL::can( $dclass, 'can_handle' ) && UNIVERSAL::can( $dclass, 'make_iterator' ); eval "use $dclass"; if ( my $e = $@ ) { push @errors, $e; next; } return $dclass if UNIVERSAL::can( $dclass, 'can_handle' ) && UNIVERSAL::can( $dclass, 'make_iterator' ); push @errors, "handler '$dclass' does not implement can_handle & make_iterator"; } $self->_croak( "Cannot load handler '$handler': " . join( "\n", @errors ) ); } ############################################################################## =head3 C<make_iterator> my $iterator = $src_factory->make_iterator( $source ); Given a L<TAP::Parser::Source>, finds the most suitable L<TAP::Parser::SourceHandler> to use to create a L<TAP::Parser::Iterator> (see L</detect_source>). Dies on error. =cut sub make_iterator { my ( $self, $source ) = @_; $self->_croak('no raw source defined!') unless defined $source->raw; $source->config( $self->config )->assemble_meta; # is the raw source already an object? return $source->raw if ( $source->meta->{is_object} && UNIVERSAL::isa( $source->raw, 'TAP::Parser::SourceHandler' ) ); # figure out what kind of source it is my $sd_class = $self->detect_source($source); $self->_last_handler($sd_class); return if $self->_testing; # create it my $iterator = $sd_class->make_iterator($source); return $iterator; } =head3 C<detect_source> Given a L<TAP::Parser::Source>, detects what kind of source it is and returns I<one> L<TAP::Parser::SourceHandler> (the most confident one). Dies on error. The detection algorithm works something like this: for (@registered_handlers) { # ask them how confident they are about handling this source $confidence{$handler} = $handler->can_handle( $source ) } # choose the most confident handler Ties are handled by choosing the first handler. =cut sub detect_source { my ( $self, $source ) = @_; confess('no raw source ref defined!') unless defined $source->raw; # find a list of handlers that can handle this source: my %confidence_for; for my $handler ( @{ $self->handlers } ) { my $confidence = $handler->can_handle($source); # warn "handler: $handler: $confidence\n"; $confidence_for{$handler} = $confidence if $confidence; } if ( !%confidence_for ) { # error: can't detect source my $raw_source_short = substr( ${ $source->raw }, 0, 50 ); confess("Cannot detect source of '$raw_source_short'!"); return; } # if multiple handlers can handle it, choose the most confident one my @handlers = sort { $confidence_for{$b} <=> $confidence_for{$a} } keys %confidence_for; # Check for a tie. if( @handlers > 1 && $confidence_for{$handlers[0]} == $confidence_for{$handlers[1]} ) { my $filename = $source->meta->{file}{basename}; die("There is a tie between $handlers[0] and $handlers[1].\n". "Both voted $confidence_for{$handlers[0]} on $filename.\n"); } # this is really useful for debugging handlers: if ( $ENV{TAP_HARNESS_SOURCE_FACTORY_VOTES} ) { warn( "votes: ", join( ', ', map {"$_: $confidence_for{$_}"} @handlers ), "\n" ); } # return 1st return $handlers[0]; } 1; __END__ =head1 SUBCLASSING Please see L<TAP::Parser/SUBCLASSING> for a subclassing overview. =head2 Example If we've done things right, you'll probably want to write a new source, rather than sub-classing this (see L<TAP::Parser::SourceHandler> for that). But in case you find the need to... package MyIteratorFactory; use strict; use base 'TAP::Parser::IteratorFactory'; # override source detection algorithm sub detect_source { my ($self, $raw_source_ref, $meta) = @_; # do detective work, using $meta and whatever else... } 1; =head1 AUTHORS Steve Purkis =head1 ATTRIBUTION Originally ripped off from L<Test::Harness>. Moved out of L<TAP::Parser> & converted to a factory class to support extensible TAP source detective work by Steve Purkis. =head1 SEE ALSO L<TAP::Object>, L<TAP::Parser>, L<TAP::Parser::SourceHandler>, L<TAP::Parser::SourceHandler::File>, L<TAP::Parser::SourceHandler::Perl>, L<TAP::Parser::SourceHandler::RawTAP>, L<TAP::Parser::SourceHandler::Handle>, L<TAP::Parser::SourceHandler::Executable> =cut Back

Edit File : IteratorFactory.pm | Size : 8.11 KB

package TAP::Parser::IteratorFactory;

use strict;
use warnings;

use Carp qw( confess );
use File::Basename qw( fileparse );

use base 'TAP::Object';

use constant handlers => [];

=head1 NAME

TAP::Parser::IteratorFactory - Figures out which SourceHandler objects to use for a given Source

=head1 VERSION

Version 3.42

=cut

our $VERSION = '3.42';

=head1 SYNOPSIS

use TAP::Parser::IteratorFactory;
  my $factory = TAP::Parser::IteratorFactory->new({ %config });
  my $iterator  = $factory->make_iterator( $filename );

=head1 DESCRIPTION

This is a factory class that takes a L<TAP::Parser::Source> and runs it through all the
registered L<TAP::Parser::SourceHandler>s to see which one should handle the source.

If you're a plugin author, you'll be interested in how to L</register_handler>s,
how L</detect_source> works.

=head1 METHODS

=head2 Class Methods

=head3 C<new>

Creates a new factory class:

my $sf = TAP::Parser::IteratorFactory->new( $config );

C<$config> is optional.  If given, sets L</config> and calls L</load_handlers>.

=cut

sub _initialize {
    my ( $self, $config ) = @_;
    $self->config( $config || {} )->load_handlers;
    return $self;
}

=head3 C<register_handler>

Registers a new L<TAP::Parser::SourceHandler> with this factory.

__PACKAGE__->register_handler( $handler_class );

=head3 C<handlers>

List of handlers that have been registered.

=cut

sub register_handler {
    my ( $class, $dclass ) = @_;

confess("$dclass must implement can_handle & make_iterator methods!")
      unless UNIVERSAL::can( $dclass, 'can_handle' )
          && UNIVERSAL::can( $dclass, 'make_iterator' );

my $handlers = $class->handlers;
    push @{$handlers}, $dclass
      unless grep { $_ eq $dclass } @{$handlers};

return $class;
}

##############################################################################

=head2 Instance Methods

=head3 C<config>

my $cfg = $sf->config;
 $sf->config({ Perl => { %config } });

Chaining getter/setter for the configuration of the available source handlers.
This is a hashref keyed on handler class whose values contain config to be passed
onto the handlers during detection & creation.  Class names may be fully qualified
or abbreviated, eg:

# these are equivalent
  $sf->config({ 'TAP::Parser::SourceHandler::Perl' => { %config } });
  $sf->config({ 'Perl' => { %config } });

=cut

sub config {
    my $self = shift;
    return $self->{config} unless @_;
    unless ( 'HASH' eq ref $_[0] ) {
        $self->_croak('Argument to &config must be a hash reference');
    }
    $self->{config} = shift;
    return $self;
}

sub _last_handler {
    my $self = shift;
    return $self->{last_handler} unless @_;
    $self->{last_handler} = shift;
    return $self;
}

sub _testing {
    my $self = shift;
    return $self->{testing} unless @_;
    $self->{testing} = shift;
    return $self;
}

##############################################################################

=head3 C<load_handlers>

$sf->load_handlers;

Loads the handler classes defined in L</config>.  For example, given a config:

$sf->config({
    MySourceHandler => { some => 'config' },
  });

C<load_handlers> will attempt to load the C<MySourceHandler> class by looking in
C<@INC> for it in this order:

TAP::Parser::SourceHandler::MySourceHandler
  MySourceHandler

C<croak>s on error.

=cut

sub load_handlers {
    my ($self) = @_;
    for my $handler ( keys %{ $self->config } ) {
        my $sclass = $self->_load_handler($handler);

# TODO: store which class we loaded anywhere?
    }
    return $self;
}

sub _load_handler {
    my ( $self, $handler ) = @_;

my @errors;
    for my $dclass ( "TAP::Parser::SourceHandler::$handler", $handler ) {
        return $dclass
          if UNIVERSAL::can( $dclass, 'can_handle' )
              && UNIVERSAL::can( $dclass, 'make_iterator' );

eval "use $dclass";
        if ( my $e = $@ ) {
            push @errors, $e;
            next;
        }

return $dclass
          if UNIVERSAL::can( $dclass, 'can_handle' )
              && UNIVERSAL::can( $dclass, 'make_iterator' );
        push @errors,
          "handler '$dclass' does not implement can_handle & make_iterator";
    }

$self->_croak(
        "Cannot load handler '$handler': " . join( "\n", @errors ) );
}

##############################################################################

=head3 C<make_iterator>

my $iterator = $src_factory->make_iterator( $source );

Given a L<TAP::Parser::Source>, finds the most suitable L<TAP::Parser::SourceHandler>
to use to create a L<TAP::Parser::Iterator> (see L</detect_source>).  Dies on error.

=cut

sub make_iterator {
    my ( $self, $source ) = @_;

$self->_croak('no raw source defined!') unless defined $source->raw;

$source->config( $self->config )->assemble_meta;

# is the raw source already an object?
    return $source->raw
      if ( $source->meta->{is_object}
        && UNIVERSAL::isa( $source->raw, 'TAP::Parser::SourceHandler' ) );

# figure out what kind of source it is
    my $sd_class = $self->detect_source($source);
    $self->_last_handler($sd_class);

return if $self->_testing;

# create it
    my $iterator = $sd_class->make_iterator($source);

return $iterator;
}

=head3 C<detect_source>

Given a L<TAP::Parser::Source>, detects what kind of source it is and
returns I<one> L<TAP::Parser::SourceHandler> (the most confident one).  Dies
on error.

The detection algorithm works something like this:

for (@registered_handlers) {
    # ask them how confident they are about handling this source
    $confidence{$handler} = $handler->can_handle( $source )
  }
  # choose the most confident handler

Ties are handled by choosing the first handler.

=cut

sub detect_source {
    my ( $self, $source ) = @_;

confess('no raw source ref defined!') unless defined $source->raw;

# find a list of handlers that can handle this source:
    my %confidence_for;
    for my $handler ( @{ $self->handlers } ) {
        my $confidence = $handler->can_handle($source);
        # warn "handler: $handler: $confidence\n";
        $confidence_for{$handler} = $confidence if $confidence;
    }

if ( !%confidence_for ) {
        # error: can't detect source
        my $raw_source_short = substr( ${ $source->raw }, 0, 50 );
        confess("Cannot detect source of '$raw_source_short'!");
        return;
    }

# if multiple handlers can handle it, choose the most confident one
    my @handlers =
          sort { $confidence_for{$b} <=> $confidence_for{$a} }
          keys %confidence_for;

# Check for a tie.
    if( @handlers > 1 &&
        $confidence_for{$handlers[0]} == $confidence_for{$handlers[1]}
    ) {
        my $filename = $source->meta->{file}{basename};
        die("There is a tie between $handlers[0] and $handlers[1].\n".
            "Both voted $confidence_for{$handlers[0]} on $filename.\n");
    }

# this is really useful for debugging handlers:
    if ( $ENV{TAP_HARNESS_SOURCE_FACTORY_VOTES} ) {
        warn(
            "votes: ",
            join( ', ', map {"$_: $confidence_for{$_}"} @handlers ),
            "\n"
        );
    }

# return 1st
    return $handlers[0];
}

__END__

=head1 SUBCLASSING

Please see L<TAP::Parser/SUBCLASSING> for a subclassing overview.

=head2 Example

If we've done things right, you'll probably want to write a new source,
rather than sub-classing this (see L<TAP::Parser::SourceHandler> for that).

But in case you find the need to...

package MyIteratorFactory;

use strict;

use base 'TAP::Parser::IteratorFactory';

# override source detection algorithm
  sub detect_source {
    my ($self, $raw_source_ref, $meta) = @_;
    # do detective work, using $meta and whatever else...
  }

=head1 AUTHORS

Steve Purkis

=head1 ATTRIBUTION

Originally ripped off from L<Test::Harness>.

Moved out of L<TAP::Parser> & converted to a factory class to support
extensible TAP source detective work by Steve Purkis.

=head1 SEE ALSO

L<TAP::Object>,
L<TAP::Parser>,
L<TAP::Parser::SourceHandler>,
L<TAP::Parser::SourceHandler::File>,
L<TAP::Parser::SourceHandler::Perl>,
L<TAP::Parser::SourceHandler::RawTAP>,
L<TAP::Parser::SourceHandler::Handle>,
L<TAP::Parser::SourceHandler::Executable>

=cut

Back