1 package Text::Tradition::Collation::Reading;
4 use overload '""' => \&_stringify, 'fallback' => 1;
8 Text::Tradition::Collation::Reading - represents a reading (usually a word) in a collation.
12 Text::Tradition is a library for representation and analysis of collated
13 texts, particularly medieval ones. A 'reading' refers to a unit of text,
14 usually a word, that appears in one or more witnesses (manuscripts) of the
15 tradition; the text of a given witness is composed of a set of readings in
22 Creates a new reading in the given collation with the given attributes.
27 =item collation - The Text::Tradition::Collation object to which this reading belongs. Required.
29 =item id - A unique identifier for this reading. Required.
31 =item text - The word or other text of the reading.
33 =item is_start - The reading is the starting point for the collation.
35 =item is_end - The reading is the ending point for the collation.
37 =item is_lacuna - The 'reading' represents a known gap in the text.
39 =item is_ph - A temporary placeholder for apparatus parsing purposes. Do not use unless you know what you are doing.
41 =item rank - The sequence number of the reading. This should probably not be set manually.
45 One of 'text', 'is_start', 'is_end', or 'is_lacuna' is required.
61 Accessor methods for the given attributes.
67 isa => 'Text::Tradition::Collation',
82 writer => 'alter_text',
112 predicate => 'has_rank',
116 around BUILDARGS => sub {
126 # Did we get a JSON token to parse into a reading? If so, massage it.
127 if( exists $args->{'json'} ) {
128 my $j = delete $args->{'json'};
130 # If we have separated punctuation, restore it.
131 if( exists $j->{'punctuation'} ) {
132 $args->{'text'} = _restore_punct( $j->{'t'}, $j->{'punctuation'} );
134 $args->{'text'} = $j->{'t'};
135 # we don't use comparison or canonical forms yet
139 # If one of our special booleans is set, we change the text and the
141 if( exists $args->{'is_lacuna'} && !exists $args->{'text'} ) {
142 $args->{'text'} = '#LACUNA#';
143 } elsif( exists $args->{'is_start'} ) {
144 $args->{'id'} = '#START#'; # Change the ID to ensure we have only one
145 $args->{'text'} = '#START#';
147 } elsif( exists $args->{'is_end'} ) {
148 $args->{'id'} = '#END#'; # Change the ID to ensure we have only one
149 $args->{'text'} = '#END#';
150 } elsif( exists $args->{'is_ph'} ) {
151 $args->{'text'} = $args->{'id'};
154 $class->$orig( $args );
157 # Utility function for parsing JSON from nCritic
159 my( $word, @punct ) = @_;
160 foreach my $p ( sort { $a->{pos} <=> $b->{pos} } @punct ) {
161 substr( $word, $p->{pos}, 0, $p->{char} );
168 A meta attribute (ha ha), which should be true if any of our 'special'
169 booleans are true. Implies that the reading does not represent a bit
170 of text found in a witness.
176 return $self->is_start || $self->is_end || $self->is_lacuna || $self->is_ph;
179 # Some syntactic sugar
180 sub related_readings {
182 return $self->collation->related_readings( $self, @_ );
187 my @pred = $self->collation->sequence->predecessors( $self->id );
188 return map { $self->collation->reading( $_ ) } @pred;
193 my @succ = $self->collation->sequence->successors( $self->id );
194 return map { $self->collation->reading( $_ ) } @succ;
198 my( $self, $other ) = @_;
199 return $self->collation->add_relationship( $self, $other,
200 { 'type' => 'transposition' } );
209 __PACKAGE__->meta->make_immutable;