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#!/usr/bin/perl
use v5.14;
use warnings;
use Test2::V0;
use meta;
no warnings qw( meta::experimental );
our $SCALAR = "the scalar";
{
my $metavar = meta::package->get( "main" )->get_symbol( '$SCALAR' );
ok( !$metavar->is_glob, '$metavar->is_glob false' );
ok( $metavar->is_scalar, '$metavar->is_scalar' );
ok( !$metavar->is_array, '$metavar->is_array false' );
ok( !$metavar->is_hash, '$metavar->is_hash false' );
ok( !$metavar->is_subroutine, '$metavar->is_subroutine false' );
is( $metavar->value, "the scalar",
'$metavar->value of $SCALAR' );
$metavar = meta::for_reference( \$SCALAR );
ok( $metavar->is_scalar, '$metavar for reference ->is_scalar' );
ref_is( $metavar->reference, \$SCALAR,
'meta::for_reference SCALAR yields metavar' );
}
our @ARRAY = qw( ab cd ef );
{
my $metavar = meta::package->get( "main" )->get_symbol( '@ARRAY' );
ok( $metavar->is_array, '$metavar->is_array' );
is( scalar $metavar->value, 3,
'$metavar->value of @ARRAY in scalar context' );
is( [ $metavar->value ], [qw( ab cd ef )],
'$metavar->value of @ARRAY in list context' );
$metavar = meta::for_reference( \@ARRAY );
ok( $metavar->is_array, '$metavar for reference ->is_array' );
ref_is( $metavar->reference, \@ARRAY,
'meta::for_reference ARRAY yields metavar' );
}
our %HASH = ( one => 1, two => 2 );
{
my $metavar = meta::package->get( "main" )->get_symbol( '%HASH' );
ok( $metavar->is_hash, '$metavar->is_hash' );
is( scalar $metavar->value, 2,
'$metavar->value of %HASH in scalar context' );
is( { $metavar->value }, { one => 1, two => 2 },
'$metavar->value of %HASH in list context' );
$metavar = meta::for_reference( \%HASH );
ok( $metavar->is_hash, '$metavar for reference ->is_hash' );
ref_is( $metavar->reference, \%HASH,
'meta::for_reference HASH yields metavar' );
}
{
my $destroyed;
sub DestroyWatcher::DESTROY { $destroyed++ }
my $metavar = meta::for_reference( [ bless [], "DestroyWatcher" ] );
ok( !$destroyed, 'metavar keeps referred array alive' );
undef $metavar;
ok( $destroyed, 'destruction of metavar destroys referred array' );
}
done_testing;
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