晋太元中，武陵人捕鱼为业。缘溪行，忘路之远近。忽逢桃花林，夹岸数百步，中无杂树，芳草鲜美，落英缤纷。渔人甚异之，复前行，欲穷其林。 　　林尽水源，便得一山，山有小口，仿佛若有光。便舍船，从口入。初极狭，才通人。复行数十步，豁然开朗。土地平旷，屋舍俨然，有良田、美池、桑竹之属。阡陌交通，鸡犬相闻。其中往来种作，男女衣着，悉如外人。黄发垂髫，并怡然自乐。 　　见渔人，乃大惊，问所从来。具答之。便要还家，设酒杀鸡作食。村中闻有此人，咸来问讯。自云先世避秦时乱，率妻子邑人来此绝境，不复出焉，遂与外人间隔。问今是何世，乃不知有汉，无论魏晋。此人一一为具言所闻，皆叹惋。余人各复延至其家，皆出酒食。停数日，辞去。此中人语云：“不足为外人道也。”(间隔 一作：隔绝) 　　既出，得其船，便扶向路，处处志之。及郡下，诣太守，说如此。太守即遣人随其往，寻向所志，遂迷，不复得路。 　　南阳刘子骥，高尚士也，闻之，欣然规往。未果，寻病终。后遂无问津者。 sh-3ll

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DIR:/usr/local/lib64/perl5/XML/LibXML/
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Current File : //usr/local/lib64/perl5/XML/LibXML/Boolean.pm
# $Id$
#
#
# This is free software, you may use it and distribute it under the same terms as
# Perl itself.
#
# Copyright 2001-2003 AxKit.com Ltd., 2002-2006 Christian Glahn, 2006-2009 Petr Pajas
#
#

package XML::LibXML::Boolean;
use XML::LibXML::Number;
use XML::LibXML::Literal;
use strict;
use warnings;

use vars qw ($VERSION);

$VERSION = "2.0210"; # VERSION TEMPLATE: DO NOT CHANGE

use overload
        '""' => \&value,
        '<=>' => \&cmp;

sub new {
    my $class = shift;
    my ($param) = @_;
    my $val = $param ? 1 : 0;
    bless \$val, $class;
}

sub True {
    my $class = shift;
    my $val = 1;
    bless \$val, $class;
}

sub False {
    my $class = shift;
    my $val = 0;
    bless \$val, $class;
}

sub value {
    my $self = shift;
    $$self;
}

sub cmp {
    my $self = shift;
    my ($other, $swap) = @_;
    if ($swap) {
        return $other <=> $$self;
    }
    return $$self <=> $other;
}

sub to_number { XML::LibXML::Number->new($_[0]->value); }
sub to_boolean { $_[0]; }
sub to_literal { XML::LibXML::Literal->new($_[0]->value ? "true" : "false"); }

sub string_value { return $_[0]->to_literal->value; }

1;
__END__

=head1 NAME

XML::LibXML::Boolean - Boolean true/false values

=head1 DESCRIPTION

XML::LibXML::Boolean objects implement simple boolean true/false objects.

=head1 API

=head2 XML::LibXML::Boolean->True

Creates a new Boolean object with a true value.

=head2 XML::LibXML::Boolean->False

Creates a new Boolean object with a false value.

=head2 value()

Returns true or false.

=head2 to_literal()

Returns the string "true" or "false".

=cut