NAME

v6 - An experimental Perl 6 implementation

SYNOPSIS

    # file: hello_world.pl
    use v6-alpha;
    "hello, world".say;

    $ perl hello_world.pl

v6-alpha can be used in one-liners:

    $ perl -e 'use v6-alpha' ' 42.say '
    $ perl -e 'use v6-alpha' - ' 42.say '
    $ perl -e 'use v6-alpha' - --compile-only ' 42.say '
    $ perl -e 'use v6-alpha' - -Ilib6 ' 42.say '
    $ echo 42.say | perl -e 'use v6-alpha' 

v6.pm can also be used as a plain program. This examples assume that v6.pm is in the ./lib directory:

    $ perl lib/v6.pm -e 'for 1,2,3 -> $x { say $x }'
    $ perl lib/v6.pm --compile-only -e '<hello>.say;'

DESCRIPTION

The v6 module is a front-end to the experimental Perl6-to-Perl5 compiler.

The current state of this compiler implementation only provides a small sample of Perl 6 syntax and semantics.

Other Perl 6 implementations

The Pugs/Haskell Perl 6 is currently the most complete implementation. Pugs currently has some issues with Perl 5 interoperability.

Parrot Perl 6 aims to become the best performing implementation, but currently is less complete than both v6.pm and Pugs/Haskell.

Although running v6.pm requires the installation of a lot of Perl 5 modules, it is completely independent of Pugs or Parrot.

REQUIREMENTS

- The source file header must be valid perl5 and perl6 code.

This is a valid header:

    #!/usr/bin/perl
    use v6-alpha;

* it executes perl5

* perl5 will call the v6.pm module.

This is an invalid header:

    #!/usr/bin/pugs
    use v6;

* it tells perl5 to execute /usr/bin/pugs.

* it tells perl5 that Perl v6.0.0 required.

- The Pugs::Compiler::Rule module must be properly installed.

An improperly installed Pugs::Compiler::Rule module would prevent the Perl 6 compiler from bootstrapping.

If that is the case, running Makefile.PL and make in Pugs::Compiler::Rule should fix the problem.

- The perl5 executable must have PMC support.

PMC support is required for loading precompiled Perl 6 files.

If you see the error below, it may happen that your perl was compiled without PMC support.

  Can't locate object method "compile" via package "Pugs::Compiler::Perl6"

Please see http://rt.cpan.org/Public/Bug/Display.html?id=20152

ENVIRONMENT VARIABLES

* PERL6LIB

Same usage as PERL5LIB - sets the search path for Perl 6 modules.

* V6DUMPAST

If set, the compiler will dump the syntax tree to STDOUT just before emitting code, using Data::Dumper.

* V6NOTIDY

If set, the compiler output will be much less readable, but there will be some improvement in compiler speed.

COMMAND LINE SWITCHES

* --compile-only

When using v6.pm from the command line, dumps the emitted code to STDOUT and then exit:

    $ perl -Ilib lib/v6.pm --compile-only -e '<hello>.say;'

AUTHORS

The Pugs Team <perl6-compiler@perl.org>.

SEE ALSO

The Perl 6 homepage at http://dev.perl.org/perl6.

- the Perl 6 Synopsis: http://dev.perl.org/perl6/doc/synopsis.html.

The Pugs homepage at http://pugscode.org/.

The Parrot homepage at http://www.parrotcode.org.

COPYRIGHT

Copyright 2006 by Flavio Soibelmann Glock and others.

This program is free software; you can redistribute it and/or modify it under the same terms as Perl itself.

See http://www.perl.com/perl/misc/Artistic.html

cpanm v6

perl -MCPAN -e shell
install v6