109 lines
1.7 KiB
Perl
109 lines
1.7 KiB
Perl
package PPI::Token::Number::Hex;
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=pod
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=head1 NAME
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PPI::Token::Number::Hex - Token class for a binary number
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=head1 SYNOPSIS
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$n = 0x1234; # hexadecimal integer
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=head1 INHERITANCE
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PPI::Token::Number::Hex
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isa PPI::Token::Number
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isa PPI::Token
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isa PPI::Element
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=head1 DESCRIPTION
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The C<PPI::Token::Number::Hex> class is used for tokens that
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represent base-16 numbers.
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=head1 METHODS
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=cut
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use strict;
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use PPI::Token::Number ();
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our $VERSION = '1.270'; # VERSION
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our @ISA = "PPI::Token::Number";
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=pod
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=head2 base
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Returns the base for the number: 16.
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=cut
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sub base() { 16 }
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=pod
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=head2 literal
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Return the numeric value of this token.
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=cut
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sub literal {
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my $self = shift;
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my $str = $self->_literal;
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my $neg = $str =~ s/^\-//;
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my $val = hex lc( $str ); # lc for compatibility with perls before 5.14
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return $neg ? -$val : $val;
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}
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#####################################################################
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# Tokenizer Methods
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sub __TOKENIZER__on_char {
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my $class = shift;
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my $t = shift;
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my $char = substr( $t->{line}, $t->{line_cursor}, 1 );
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# Allow underscores straight through
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return 1 if $char eq '_';
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if ( $char =~ /[[:xdigit:]]/ ) {
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return 1;
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}
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# Doesn't fit a special case, or is after the end of the token
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# End of token.
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$t->_finalize_token->__TOKENIZER__on_char( $t );
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}
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1;
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=pod
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=head1 SUPPORT
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See the L<support section|PPI/SUPPORT> in the main module.
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=head1 AUTHOR
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Chris Dolan E<lt>cdolan@cpan.orgE<gt>
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=head1 COPYRIGHT
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Copyright 2006 Chris Dolan.
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This program is free software; you can redistribute
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it and/or modify it under the same terms as Perl itself.
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The full text of the license can be found in the
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LICENSE file included with this module.
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=cut
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