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package PPI::Token::Operator; |
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=pod |
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=head1 NAME |
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PPI::Token::Operator - Token class for operators |
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=head1 INHERITANCE |
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PPI::Token::Operator |
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isa PPI::Token |
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isa PPI::Element |
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=head1 SYNOPSIS |
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# This is the list of valid operators |
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++ -- ** ! ~ + - |
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=~ !~ * / % x |
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<< >> lt gt le ge cmp ~~ |
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== != <=> . .. ... , |
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& | ^ && || // |
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? : **= += -= .= *= /= |
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%= x= &= |= ^= <<= >>= &&= |
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||= //= < > <= >= <> => -> |
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and or xor not eq ne <<>> |
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=head1 DESCRIPTION |
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All operators in PPI are created as C objects, |
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including the ones that may superficially look like a L |
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object. |
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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 and L classes. |
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=cut |
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use strict; |
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use PPI::Token (); |
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use PPI::Singletons '%OPERATOR'; |
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24853
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our $VERSION = '1.276'; |
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our @ISA = "PPI::Token"; |
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##################################################################### |
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# Tokenizer Methods |
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sub __TOKENIZER__on_char { |
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50529
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50529
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61447
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my $t = $_[1]; |
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50529
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75647
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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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50529
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my $content = $t->{token}->{content}; |
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# special case for <<>> operator |
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if(length($content) < 4 && |
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$content . substr( $t->{line}, $t->{line_cursor}, 4 - length($content) ) eq '<<>>') { |
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return 1; |
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} |
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return 1 if $OPERATOR{ $content . $char }; |
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# Handle the special case of a .1234 decimal number |
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38074
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if ( $content eq '.' ) { |
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1468
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if ( $char =~ /^[0-9]$/ ) { |
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# This is a decimal number |
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$t->{class} = $t->{token}->set_class('Number::Float'); |
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return $t->{class}->__TOKENIZER__on_char( $t ); |
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} |
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} |
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# Handle the special case if we might be a here-doc |
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37777
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53685
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if ( $content eq '<<' ) { |
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pos $t->{line} = $t->{line_cursor}; |
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# Either <
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# <<~FOO or <<~ 'FOO' or <<~\FOO |
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### Is the zero-width look-ahead assertion really |
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### supposed to be there? |
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1037
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if ( $t->{line} =~ m/\G ~? (?: (?!\d)\w | \s*['"`] | \\\w ) /gcx ) { |
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# This is a here-doc. |
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# Change the class and move to the HereDoc's own __TOKENIZER__on_char method. |
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$t->{class} = $t->{token}->set_class('HereDoc'); |
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return $t->{class}->__TOKENIZER__on_char( $t ); |
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} |
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} |
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# Handle the special case of the null Readline |
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37060
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$t->{class} = $t->{token}->set_class('QuoteLike::Readline') |
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if $content eq '<>' or $content eq '<<>>'; |
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# Finalize normally |
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37060
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64330
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$t->_finalize_token->__TOKENIZER__on_char( $t ); |
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} |
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102
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1; |
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=pod |
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=head1 SUPPORT |
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See the L in the main module. |
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110
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=head1 AUTHOR |
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Adam Kennedy Eadamk@cpan.orgE |
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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 |