#!/usr/bin/env perl
use strict;
use warnings;
use Getopt::Long qw(:config bundling passthrough);
use Perl::MinimumVersion::Fast;

GetOptions (
    "e:s" => \my $expr,
    "v"   => \my $verbose,
    ) or die;

if (@ARGV) {
    report ($_, $_) for @ARGV;
    }
elsif ($expr) {
    report ("-e", \$expr);
    }
else {
    my $src = do { local $/; <> };
    report ("STDIN", \$src);
    }

sub report {
    my ($in, $src) = @_;
    my $v = Perl::MinimumVersion::Fast->new ($src);
    printf "%s: %s / %s\n", $in, $v->minimum_version, $v->minimum_syntax_version;
    $verbose or return;
    my @markers = $v->version_markers;
    while (@markers) {
        my ($pv, $m) = splice @markers, 0, 2;
        printf "%-10s %s\n", $pv, $_ for @$m;
        }
    }