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+# $Id: Literal.pm,v 1.11 2001/03/16 11:10:08 matt Exp $
+
+package XML::XPath::Literal;
+use XML::XPath::Boolean;
+use XML::XPath::Number;
+use strict;
+
+use overload
+ '""' => \&value,
+ 'cmp' => \&cmp;
+
+sub new {
+ my $class = shift;
+ my ($string) = @_;
+
+# $string =~ s/"/"/g;
+# $string =~ s/'/'/g;
+
+ bless \$string, $class;
+}
+
+sub as_string {
+ my $self = shift;
+ my $string = $$self;
+ $string =~ s/'/'/g;
+ return "'$string'";
+}
+
+sub as_xml {
+ my $self = shift;
+ my $string = $$self;
+ return "<Literal>$string</Literal>\n";
+}
+
+sub value {
+ my $self = shift;
+ $$self;
+}
+
+sub cmp {
+ my $self = shift;
+ my ($cmp, $swap) = @_;
+ if ($swap) {
+ return $cmp cmp $$self;
+ }
+ return $$self cmp $cmp;
+}
+
+sub evaluate {
+ my $self = shift;
+ $self;
+}
+
+sub to_boolean {
+ my $self = shift;
+ return (length($$self) > 0) ? XML::XPath::Boolean->True : XML::XPath::Boolean->False;
+}
+
+sub to_number { return XML::XPath::Number->new($_[0]->value); }
+sub to_literal { return $_[0]; }
+
+sub string_value { return $_[0]->value; }
+
+1;
+__END__
+
+=head1 NAME
+
+XML::XPath::Literal - Simple string values.
+
+=head1 DESCRIPTION
+
+In XPath terms a Literal is what we know as a string.
+
+=head1 API
+
+=head2 new($string)
+
+Create a new Literal object with the value in $string. Note that &quot; and
+&apos; will be converted to " and ' respectively. That is not part of the XPath
+specification, but I consider it useful. Note though that you have to go
+to extraordinary lengths in an XML template file (be it XSLT or whatever) to
+make use of this:
+
+ <xsl:value-of select="&quot;I'm feeling &amp;quot;sad&amp;quot;&quot;"/>
+
+Which produces a Literal of:
+
+ I'm feeling "sad"
+
+=head2 value()
+
+Also overloaded as stringification, simply returns the literal string value.
+
+=head2 cmp($literal)
+
+Returns the equivalent of perl's cmp operator against the given $literal.
+
+=cut