88 lines
1.7 KiB
Perl
88 lines
1.7 KiB
Perl
package PPI::Token::Cast;
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=pod
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=head1 NAME
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PPI::Token::Cast - A prefix which forces a value into a different context
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=head1 INHERITANCE
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PPI::Token::Cast
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isa PPI::Token
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isa PPI::Element
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=head1 DESCRIPTION
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A "cast" in PPI terms is one of more characters used as a prefix which force
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a value into a different class or context.
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This includes referencing, dereferencing, and a few other minor cases.
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For expressions such as C<@$foo> or C<@{ $foo{bar} }> the C<@> in both cases
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represents a cast. In this case, an array dereference.
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=head1 METHODS
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There are no additional methods beyond those provided by the parent
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L<PPI::Token> and L<PPI::Element> classes.
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=cut
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use strict;
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use PPI::Token ();
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our $VERSION = '1.270'; # VERSION
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our @ISA = "PPI::Token";
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our %POSTFIX = map { $_ => 1 } (
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qw{
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%* @* $*
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},
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'$#*' # throws warnings if it's inside a qw
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);
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#####################################################################
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# Tokenizer Methods
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# A cast is either % @ $ or $#
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# and also postfix dereference are %* @* $* $#*
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sub __TOKENIZER__on_char {
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my $t = $_[1];
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my $char = substr( $t->{line}, $t->{line_cursor}, 1 );
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# Are we still an operator if we add the next character
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my $content = $t->{token}->{content};
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return 1 if $POSTFIX{ $content . $char };
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$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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Adam Kennedy E<lt>adamk@cpan.orgE<gt>
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=head1 COPYRIGHT
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Copyright 2001 - 2011 Adam Kennedy.
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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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