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package v6::perlito;
use Filter::Util::Call;
use strict;
sub compile {
my $source = $_[0];
return $source if $source =~ /^\s*$/;
$::_V6_COMPILER_NAME = 'Perlito';
$::_V6_COMPILER_VERSION = '7.0';
require Perlito::Perl5::Emitter;
require Perlito::Grammar;
require Perlito::Grammar::Regex;
require Perlito::Emitter::Token;
require Perlito::Macro;
my @comp_unit;
my $pos = 0;
my $p = Perlito::Grammar->exp_stmts( $source, $pos );
if (!$p || length($source) > $p->to) {
warn "<$source>\n";
die "Syntax error at pos ", $p->to, "\n";
}
push @comp_unit,
CompUnit->new(
name => 'GLOBAL',
body => $$p,
);
# Don't write when we failed to compile, otherwise it never recompiles!
die "Syntax error" unless @comp_unit;
my $result;
$result .= "# Do not edit this file - Generated by $::_V6_COMPILER_NAME $::_V6_COMPILER_VERSION\n";
$result .= CompUnit::emit_perl5_program( \@comp_unit );
return $result;
}
sub import {
filter_add(
sub {
my $status;
if (($status = filter_read_exact(1e9)) > 0) {
$_ = compile($_);
}
$status;
})
}
1;
=head1 NAME
v6::perlito - A Perlito front-end for v6.pm
=head1 SYNOPSIS
# file: hello_world.pl
use v6-perlito;
"hello, world".say;
$ perl hello_world.pl
=head1 DESCRIPTION
The C<v6::perlito> module is a front-end to the Perlito Perl 6 compiler.
=head1 REQUIREMENTS
- The source file header must be valid perl5 I<and> perl6 code.
This is a valid header:
#!/usr/bin/perl
use v6-perlito;
* it executes perl5
* perl5 will call the C<v6.pm> module.
This is an invalid header:
#!/usr/bin/pugs
use v6;
* it tells perl5 to execute C</usr/bin/pugs>.
* it tells perl5 that Perl v6.0.0 required.
=head1 AUTHORS
The Pugs Team E<lt>perl6-compiler@perl.orgE<gt>.
=head1 SEE ALSO
The Perl 6 homepage at L<http://dev.perl.org/perl6>.
- the Perl 6 Synopsis: L<http://dev.perl.org/perl6/doc/synopsis.html>.
The Pugs homepage at L<http://pugscode.org/>.
The Parrot homepage at L<http://www.parrotcode.org>.
=head1 COPYRIGHT
Copyright 2006, 2010 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 L<http://www.perl.com/perl/misc/Artistic.html>
=cut
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