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# $Id: Variable.pm,v 1.5 2001/03/16 11:10:08 matt Exp $
package XML::XPathEngine::Variable;
use strict;
# This class does NOT contain 1 instance of a variable
# see the XML::XPathEngine::Parser class for the instances
# This class simply holds the name of the var
sub new {
my $class = shift;
my ($pp, $name) = @_;
bless { name => $name, path_parser => $pp }, $class;
}
sub as_string {
my $self = shift;
'\$' . $self->{name};
}
sub as_xml {
my $self = shift;
return "<Variable>" . $self->{name} . "</Variable>\n";
}
sub get_value {
my $self = shift;
$self->{path_parser}->get_var($self->{name});
}
sub set_value {
my $self = shift;
my ($val) = @_;
$self->{path_parser}->set_var($self->{name}, $val);
}
sub evaluate {
my $self = shift;
my $val = $self->get_value;
return $val;
}
1;