use strict;
use lib -e 't' ? 't' : 'test';
use TestYAML tests => 12;
use YAML();
use Encode;
no warnings 'once';

my $m_xis = "m-xis";
my $_xism = "-xism";
if (qr/x/ =~ /\(\?\^/){
  $m_xis = "^m";
  $_xism = "^";
}
my @blocks = blocks;

my $block = $blocks[0];

$YAML::UseCode = 1;
my $hash = YAML::Load($block->yaml);
is $hash->{key}, "(?$m_xis:foo\$)", 'Regexps load';
is YAML::Dump(eval $block->perl), <<"...", 'Regexps dump';
---
key: !!perl/regexp (?$m_xis:foo\$)
...

my $re = $hash->{key};

is ref($re), 'Regexp', 'The regexp is a Regexp';

like "Hello\nBarfoo", $re, 'The regexp works';

#-------------------------------------------------------------------------------

$block = $blocks[1];

$hash = YAML::Load($block->yaml);
is $hash->{key}, "(?$m_xis:foo\$)", 'Regexps load';

# XXX Dumper can't detect a blessed regexp

# is YAML::Dump(eval $block->perl), <<"...", 'Regexps dump';
# ---
# key: !!perl/regexp (?$m_xis:foo\$)
# ...

$re = $hash->{key};

is ref($re), 'Classy', 'The regexp is a Classy :(';

# XXX Test more doesn't think a blessed regexp is a regexp (for like)

# like "Hello\nBarfoo", $re, 'The regexp works';
ok(("Hello\nBarfoo" =~ $re), 'The regexp works');

#-------------------------------------------------------------------------------

$block = $blocks[2];

$hash = YAML::Load($block->yaml);
is $hash->{key}, "(?$_xism:foo\$)", 'Regexps load';

is YAML::Dump(eval $block->perl), <<"...", 'Regexps dump';
---
key: !!perl/regexp (?$_xism:foo\$)
...

$re = $hash->{key};

is ref($re), 'Regexp', 'The regexp is a Regexp';

like "Barfoo", $re, 'The regexp works';

my $yaml = decode_utf8 q{re : !!perl/regexp OK};
$re = Load $yaml;
$yaml = Dump $re;
my $compare = $yaml;
for (1 .. 5) {
    $re = Load $yaml;
    $yaml = Dump $re;
}

cmp_ok($yaml, 'eq', $compare, "Regexp multiple roundtrip does not grow");


__END__
=== A regexp with flag
+++ yaml
---
key: !!perl/regexp (?m-xis:foo$)
+++ perl
+{key => qr/foo$/m}

=== A blessed rexexp
+++ yaml
---
key: !!perl/regexp:Classy (?m-xis:foo$)
+++ perl
+{key => bless(qr/foo$/m, 'Classy')}

=== A regexp with no flag
+++ yaml
---
key: !!perl/regexp (?-xism:foo$)
+++ perl
+{key => qr/foo$/}