#!/usr/bin/perl
use strict;
no strict 'refs';
use warnings;
use Getopt::Long qw( GetOptions :config pass_through );
use B qw( walksymtable svref_2object );
use B::Concise;

GetOptions( 'root=s' => \my($root),
            'rx=s' => \my($rx),
            help => sub { pod2usage( -verbose => 1 ) },
            man => sub { pod2usage( -verbose => 2 ) } )
  or pod2usage( -verbose => 0 );
if ( not keys %{ $root . '::' } ) {
    die "NAMESPACE $root doesn't seem to exist.\n";
}
if ( defined $rx ) {
    $rx = qr/$rx/;
}

walksymtable( \%{ "${root}::" },
              'concise_cv',
              ( defined $rx ? \&REGEX_RECURSE : \&ALWAYS_RECURSE ),
              "${root}::");
exit;

sub ALWAYS_RECURSE { 1 }
sub REGEX_RECURSE { shift( @_ ) =~ $rx }

sub B::GV::concise_cv {
    my $gv = shift @_;
    my $name = $gv->STASH->NAME . '::' . $gv->NAME;
    $name =~ s/^main:://;
    return unless defined &$name;
    my $code = \&$name;
    return unless ${ svref_2object($code)->START };

    print "$name\n";
    B::Concise::compile( @ARGV, \&$name )->();
    print "\n";
}

__END__

=head1 NAME

decompile-perl

=head1 SYNOPSIS

  decompile-perl --root NAMESPACE

    Options:
      --root NAMESPACE TO WALK
      --rx

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In reply to Decompile swathes of perl to B::Concise by diotalevi

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