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# $Id: LocationPath.pm,v 1.8 2001/03/16 11:10:08 matt Exp $
package XML::XPathEngine::LocationPath;
use XML::XPathEngine::Root;
use strict;
sub new {
my $class = shift;
my $self = [];
bless $self, $class;
}
sub as_string {
my $self = shift;
my $string;
for (my $i = 0; $i < @$self; $i++) {
$string .= $self->[$i]->as_string;
$string .= "/" if $self->[$i+1];
}
return $string;
}
sub as_xml {
my $self = shift;
my $string = "<LocationPath>\n";
for (my $i = 0; $i < @$self; $i++) {
$string .= $self->[$i]->as_xml;
}
$string .= "</LocationPath>\n";
return $string;
}
sub set_root {
my $self = shift;
unshift @$self, XML::XPathEngine::Root->new();
}
sub evaluate {
my $self = shift;
# context _MUST_ be a single node
my $context = shift;
die "No context" unless $context;
# I _think_ this is how it should work :)
my $nodeset = XML::XPathEngine::NodeSet->new();
$nodeset->push($context);
foreach my $step (@$self) {
# For each step
# evaluate the step with the nodeset
my $pos = 1;
$nodeset = $step->evaluate($nodeset);
}
return $nodeset;
}
1;