Initial Commit

database/perl/vendor/lib/PPI/Token/Number/Float.pm

@@ -0,0 +1,140 @@
+package PPI::Token::Number::Float;
+
+=pod
+
+=head1 NAME
+
+PPI::Token::Number::Float - Token class for a floating-point number
+
+=head1 SYNOPSIS
+
+  $n = 1.234;
+
+=head1 INHERITANCE
+
+  PPI::Token::Number::Float
+  isa PPI::Token::Number
+      isa PPI::Token
+          isa PPI::Element
+
+=head1 DESCRIPTION
+
+The C<PPI::Token::Number::Float> class is used for tokens that
+represent floating point numbers.  A float is identified by n decimal
+point.  Exponential notation (the C<e> or C<E>) is handled by the
+PPI::Token::Number::Exp class.
+
+=head1 METHODS
+
+=cut
+
+use strict;
+use PPI::Token::Number ();
+
+our $VERSION = '1.270'; # VERSION
+
+our @ISA = "PPI::Token::Number";
+
+=pod
+
+=head2 base
+
+Returns the base for the number: 10.
+
+=cut
+
+sub base() { 10 }
+
+=pod
+
+=head2 literal
+
+Return the numeric value of this token.
+
+=cut
+
+sub literal {
+	my $self = shift;
+	my $str = $self->_literal;
+	my $neg = $str =~ s/^\-//;
+	$str =~ s/^\./0./;
+	my $val = 0+$str;
+	return $neg ? -$val : $val;
+}
+
+
+
+
+
+#####################################################################
+# Tokenizer Methods
+
+sub __TOKENIZER__on_char {
+	my $class = shift;
+	my $t     = shift;
+	my $char  = substr( $t->{line}, $t->{line_cursor}, 1 );
+
+	# Allow underscores straight through
+	return 1 if $char eq '_';
+
+	# Allow digits
+	return 1 if $char =~ /\d/o;
+
+	if ( $char eq '.' ) { # A second decimal point? That gets complicated.
+		if ( $t->{token}{content} =~ /\.$/ ) {
+			# We have a .., which is an operator. Take the . off the end of the
+			# token and finish it, then make the .. operator.
+			chop $t->{token}{content};
+			$t->{class} = $t->{token}->set_class( 'Number' );
+			$t->_new_token('Operator', '..');
+			return 0;
+		} elsif ( $t->{token}{content} =~ /\._/ ) {
+			($t->{token}{content}, my $bareword)
+				= split /\./, $t->{token}{content};
+			$t->{class} = $t->{token}->set_class( 'Number' );
+			$t->_new_token('Operator', '.');
+			$t->_new_token('Word', $bareword);
+			$t->_new_token('Operator', '.');
+			return 0;
+		} else {
+			$t->{class} = $t->{token}->set_class( 'Number::Version' );
+			return 1;
+		}
+	}
+
+	# perl seems to regard pretty much anything that's not strictly an exp num
+	# as float + stuff
+	my $char2 = substr $t->{line}, $t->{line_cursor}+1, 1;
+	if ("$char$char2" =~ /[eE][0-9+-]/) {
+		$t->{class} = $t->{token}->set_class( 'Number::Exp' );
+		return 1;
+	}
+
+	# Doesn't fit a special case, or is after the end of the token
+	# End of token.
+	$t->_finalize_token->__TOKENIZER__on_char( $t );
+}
+
+1;
+
+=pod
+
+=head1 SUPPORT
+
+See the L<support section|PPI/SUPPORT> in the main module.
+
+=head1 AUTHOR
+
+Chris Dolan E<lt>cdolan@cpan.orgE<gt>
+
+=head1 COPYRIGHT
+
+Copyright 2006 Chris Dolan.
+
+This program is free software; you can redistribute
+it and/or modify it under the same terms as Perl itself.
+
+The full text of the license can be found in the
+LICENSE file included with this module.
+
+=cut