#!perl
use warnings;

# this is run by other scripts in a `do "t/basic"' after setting
# $OPEN_NAME and $CLOSE_NAME

#$OPEN_NAME or die "\$OPEN_NAME wasn't set";
#$CLOSE_NAME or die "\$CLOSE_NAME wasn't set";
# use Regexp::NamedCaptures;
# use Test::More tests => 9;
# $OPEN_NAME  = '<';
# $CLOSE_NAME = '>';

# Runtime conversions
is( Regexp::NamedCaptures::convert("(?$OPEN_NAME\\\$_$CLOSE_NAME...)"),
    '(?{$_=undef})(...)(?{$_=$^N})',
    "convert() transformed ok"
);

# Compile-time conversions
is( eval(
              "#line "
            . ( 1 + __LINE__ ) . " \""
            . __FILE__ . "\"\n"
            . "use Regexp::NamedCaptures;\n"
            . "qr/(?$OPEN_NAME\\\$_$CLOSE_NAME...)/"
        )
        || $@,
    '(?-xism:(?{$_=undef})(...)(?{$_=$^N}))',
    "qr/(?$OPEN_NAME\\\$_$CLOSE_NAME...)/ transformed ok"
);

# Compile-time concatenation
my $nop = '(?#)';
is( eval(
              "#line "
            . ( 1 + __LINE__ ) . " \""
            . __FILE__ . "\"\n"
            . "use Regexp::NamedCaptures;\n"
            . "use re 'eval';\n"
            . "qr/(?#)(?$OPEN_NAME\\\$_$CLOSE_NAME...)/"
        )
        || $@,
    '(?-xism:(?{$_=undef})(?#)(...)(?{$_=$^N}))',
    "qr/...\$_/ transformed ok"
);
is( eval(
              "#line "
            . ( 1 + __LINE__ ) . " \""
            . __FILE__ . "\"\n"
            . "use Regexp::NamedCaptures;\n"
            . "use re 'eval';\n"
            . "qr/(?$OPEN_NAME\\\$_$CLOSE_NAME\$nop...)/"
        )
        || $@,
    '(?-xism:(?{$_=undef})((?#)...)(?{$_=$^N}))',
    "qr/.../ transformed ok"
);
is( eval(
              "#line "
            . ( 1 + __LINE__ ) . " \""
            . __FILE__ . "\"\n"
            . "use Regexp::NamedCaptures;\n"
            . "use re 'eval';\n"
            . "qr/(?$OPEN_NAME\\\$_$CLOSE_NAME...\$nop)/"
        )
        || $@,
    '(?-xism:(?{$_=undef})(...(?#))(?{$_=$^N}))'
);
is( eval(
              "#line "
            . ( 1 + __LINE__ ) . " \""
            . __FILE__ . "\"\n"
            . "use Regexp::NamedCaptures;\n"
            . "use re 'eval';\n"
            . "qr/(?$OPEN_NAME\\\$_$CLOSE_NAME...)\$nop/"
        )
        || $@,
    '(?-xism:(?{$_=undef})(...)(?{$_=$^N})(?#))'
);

{
    my $word;
    my $re = eval( "#line "
            . ( 1 + __LINE__ ) . " \""
            . __FILE__ . "\"\n"
            . "use Regexp::NamedCaptures;\n"
            . "use re 'eval';\n"
            . "qr/(?$OPEN_NAME\\\$word$CLOSE_NAME\\w+)/" )
        || $@;
    is( $re, '(?-xism:(?{$word=undef})(\w+)(?{$word=$^N}))' );
    ok( " root " =~ $re );
    is( $word, 'root' );
}

{
    my $word = 'failed';
    my $re   = eval( "#line "
            . ( 1 + __LINE__ ) . " \""
            . __FILE__ . "\"\n"
            . "use Regexp::NamedCaptures;\n"
            . "use re 'eval';\n"
            . "qr/XXX(?$OPEN_NAME\\\$word$CLOSE_NAME\\w+)/" )
        || $@;
    ok( " numbers " !~ $re );
TODO: {
        local $TODO
            = "The optimizer prevents the target clearing code from running";
        is( $word, undef );
    }
}