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package AI::Prolog::ChoicePoint; |
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$REVISION = '$Id: ChoicePoint.pm,v 1.5 2005/02/20 18:27:55 ovid Exp $'; |
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$VERSION = '0.02'; |
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30369
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use strict; |
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14
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485
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use warnings; |
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14
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464
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1310
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use Hash::Util 'lock_keys'; |
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2761
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194
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sub new { |
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my ( $class, $goal, $clause ) = @_; |
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my $self = bless { |
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goal => $goal, |
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clause => $clause, |
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} => $class; |
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lock_keys %$self; |
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return $self; |
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} |
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sub goal { $_[0]->{goal} } |
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sub clause { $_[0]->{clause} } |
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sub to_string { |
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my $self = shift; |
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return " ||" . $self->clause->to_string . "|| "; |
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} |
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1; |
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__END__ |