our $AUTHORITY = 'cpan:MATY';
$PMLTQ::Relation::CurrentFileIterator::VERSION = '2.0.0'; # TRIAL
# ABSTRACT: Iterates nodes of TredMacro::CurrentFile()
use 5.006;
use strict;
use Carp;
use constant CONDITIONS=>0;
use constant NODE=>1;
use constant FILE=>2;
use constant TREE_NO=>3;
use constant SCHEMA_ROOT_NAME=>4;
use constant FILE_QUEUE=>5;
use constant FIRST_FREE=>6;
our $PROGRESS; ### newly added
our $STOP; ### newly added
sub new {
my ($class,$conditions,$schema_root_name)=@_;
croak "usage: $class->new(sub{...})" unless ref($conditions) eq 'CODE';
return bless [$conditions,undef,undef,0,$schema_root_name,[]],$class;
}
sub _next_file {
my ($self)=@_;
my $f;
my $schema_name = $self->[SCHEMA_ROOT_NAME];
while (@{$self->[FILE_QUEUE]}) {
$f = shift @{$self->[FILE_QUEUE]};
if ($f) {
push @{$self->[FILE_QUEUE]}, TredMacro::GetSecondaryFiles($f);
if (!defined($schema_name) or $schema_name eq PML::SchemaName($f)) {
$self->[FILE]=$f;
$self->[TREE_NO]=0;
my $n = $self->[NODE] = $f->tree(0);
return ($n && $self->[CONDITIONS]->($n,$f)) ? $n : ($n && $self->next)
}
}
}
return;
}
sub start {
my ($self)=@_;
$self->[TREE_NO]=0;
$self->[FILE_QUEUE] = [ TredMacro::CurrentFile() ];
return $self->_next_file();
}
sub next {
my ($self)=@_;
my $conditions=$self->[CONDITIONS];
my $n=$self->[NODE];
my $f=$self->[FILE];
while ($n) {
$n = $n->following || (($PROGRESS ? $PROGRESS->() : 1) && $STOP && do { $n = undef; last }) || $f->tree(++$self->[TREE_NO]) || $self->_next_file();
last if $conditions->($n,$f);
}
return $self->[NODE]=$n;
}
sub file {
return $_[0]->[FILE];
}
sub node {
return $_[0]->[NODE];
}
sub reset {
my ($self)=@_;
$self->[NODE]=undef;
$self->[FILE]=undef;
$self->[FILE_QUEUE]=undef;
$self->[TREE_NO]=undef;
}
1; # End of PMLTQ::Relation::CurrentFileIterator
__END__
=pod
=encoding UTF-8
=head1 NAME
PMLTQ::Relation::CurrentFileIterator - Iterates nodes of TredMacro::CurrentFile()
=head1 VERSION
version 2.0.0
=head1 AUTHORS
=over 4
=item *
Petr Pajas <pajas@ufal.mff.cuni.cz>
=item *
Jan Štěpánek <stepanek@ufal.mff.cuni.cz>
=item *
Michal Sedlák <sedlak@ufal.mff.cuni.cz>
=item *
Matyáš Kopp <matyas.kopp@gmail.com>
=back
=head1 COPYRIGHT AND LICENSE
This software is copyright (c) 2015 by Institute of Formal and Applied Linguistics (http://ufal.mff.cuni.cz).
This is free software; you can redistribute it and/or modify it under
the same terms as the Perl 5 programming language system itself.
=cut