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package Aspect::Pointcut::Not; |
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use strict; |
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use warnings; |
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use Aspect::Pointcut::Logic (); |
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9216
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our $VERSION = '0.97_06'; |
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our @ISA = 'Aspect::Pointcut::Logic'; |
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###################################################################### |
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# Constructor |
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sub new { |
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my $class = shift; |
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# Check the thing we are negating |
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unless ( Params::Util::_INSTANCE($_[0], 'Aspect::Pointcut') ) { |
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Carp::croak("Attempted to apply pointcut logic to non-pointcut '$_[0]'"); |
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} |
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$class->SUPER::new(@_); |
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} |
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###################################################################### |
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# Weaving Methods |
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sub compile_weave { |
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my $child = $_[0]->[0]->compile_weave; |
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if ( ref $child ) { |
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return sub { not $child->() }; |
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} |
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unless ( $child eq '1' ) { |
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return "not ( $child )"; |
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} |
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# When the child matches everything, the negation doesn't negate |
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# the set of things matched. So we match everything too. |
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return 1; |
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} |
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sub compile_runtime { |
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my $child = $_[0]->[0]->compile_runtime; |
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if ( ref $child ) { |
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return sub { not $child->() }; |
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} else { |
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return "not ( $child )"; |
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} |
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} |
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sub match_contains { |
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my $self = shift; |
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my $count = $self->[0]->match_contains($_[0]); |
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return $self->isa($_[0]) ? ++$count : $count; |
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} |
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sub match_runtime { |
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5
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0
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$_[0]->[0]->match_runtime; |
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} |
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# Logical not inherits it's curryability from the element contained |
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# within it. We continue to be needed if and only if something below us |
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# continues to be needed as well. |
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sub curry_weave { |
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1
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my $self = shift; |
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5
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100
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my $child = $self->[0]->curry_weave or return; |
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# Handle the special case where the collapsing pointcut results |
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# in a "double not". Fetch the child of our child not and return |
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# it directly. |
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2
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if ( $child->isa('Aspect::Pointcut::Not') ) { |
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0
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return $child->[0]; |
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} |
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# Return our clone with the curried child |
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my $class = ref($self); |
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return $class->new( $child ); |
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} |
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# Logical not inherits it's curryability from the element contained |
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# within it. We continue to be needed if and only if something below us |
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# continues to be needed as well. |
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# For cleanliness (and to avoid accidents) we make a copy of ourself |
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# in case our child curries to something other than it's pure self. |
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sub curry_runtime { |
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5
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my $self = shift; |
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5
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100
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my $child = $self->[0]->curry_runtime or return; |
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# Handle the special case where the collapsing pointcut results |
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# in a "double not". Fetch the child of our child not and return |
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# it directly. |
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3
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50
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14
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if ( $child->isa('Aspect::Pointcut::Not') ) { |
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0
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return $child->[0]; |
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} |
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# Return our clone with the curried child |
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3
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my $class = ref($self); |
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3
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9
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return $class->new( $child ); |
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} |
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108
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1; |
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110
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__END__ |