HOOO / X3D-0.003_002 / lib / X3D / FieldDefinition.pm 

            

              
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package X3D::FieldDefinition;
our $VERSION = '0.013';
use X3D::Package 'X3DFieldDefinition : X3DObject { }';
use Want      ();
use Sub::Name ();
use overload 'eq' => sub {
   return YES if !defined( $_[0]->getValue ) && !defined( $_[1]->getValue );
   return NO if defined( $_[0]->getValue ) ^ defined( $_[1]->getValue );
   return $_[0]->getValue eq $_[1];
};
sub new {
   my $this = shift->X3DObject::new;
   @$this{qw'type in out name value range'} = @_;
   return $this;
}
sub getType { $_[0]->{type} }
sub isIn { $_[0]->{in} }
sub isOut { $_[0]->{out} }
sub getAccessType { ( $_[0]->{out} << 1 ) | $_[0]->{in} }
sub getName { $_[0]->{name} }
sub getValue { $_[0]->{value} }
sub getRange { $_[0]->{range} }
sub createField {
   my ( $this, $node ) = @_;
   my $field = $this->getType->X3DObject::new;
   $field->getParents->add($node);
   $field->setDefinition($this);
   $field->create;
   return $field;
}
sub createFieldClosure {
   my $this    = shift;
   my $name    = $this->getName;
   my $package = $this->getName;
   return Sub::Name::subname "$package\::$name" => sub  : lvalue {
      # #################################################
      # this function is also defined in SFNode.pm
      # #################################################
      #X3DMessage->Debug( $_[0], caller(0) );
      my $this = shift;
      #X3DMessage->DirectOutputIsFALSE, return unless $this->{directOutput};
      if ( Want::want('RVALUE') ) {
         my $field = $this->getField($name);
         Want::rreturn $field if Want::want 'ARRAY';
         Want::rreturn $field->getClone->getValue;
      }
      if ( Want::want( 'LVALUE', 'ASSIGN' ) ) {
         $this->getField($name)->setValue( Want::want('ASSIGN') );
         Want::lnoreturn;
      }
      if ( Want::want('CODE') ) {
         my $value = $this->getField($name)->getClone->getValue;
         return $value;
      }
      return $this->getFields->getField($name) if Want::want('REF');
      $this->getFields->getTiedField($name)    # für: += ++ ...
     }
}
#       MFNode   [in,out] children       []       [X3DChildNode]
sub toString {
   my ($this) = @_;
   my $type = $this->getType;
   my $string = '';
   $string .= $type;
   $string .= X3DGenerator->space;
   $string .= X3DGenerator->open_bracket;
   $string .= join X3DGenerator->comma, grep { $_ } $this->isIn && X3DGenerator->in, $this->isOut && X3DGenerator->out;
   $string .= X3DGenerator->close_bracket;
   $string .= X3DGenerator->tidy_space if $this->getAccessType != X3DConstants->inputOutput;
   $string .= join '', map { X3DGenerator->tidy_space x length $_ } grep { $_ } !$this->isIn && X3DGenerator->in,
     !$this->isOut && X3DGenerator->out;
   $string .= X3DGenerator->space;
   $string .= $this->getName;
   $string .= X3DGenerator->space;
   my $value = $this->getValue;
   if ( UNIVERSAL::isa( $value, 'X3DArray' ) ) {
      $string .=
        @$value
        ? join X3DGenerator->space, @$value
        : X3DGenerator->open_bracket . X3DGenerator->close_bracket;
   }
   else {
      if ( $type eq 'SFBool' ) {
         $string .= $value ? X3DGenerator->TRUE : X3DGenerator->FALSE;
      }
      elsif ( $type eq 'SFString' ) {
         $string .= sprintf X3DGenerator->STRING, $value;
      }
      elsif ( $type eq 'SFNode' ) {
         $string .= $value || X3DGenerator->NULL;
      }
      else {
         $string .= $value;
      }
   }
   $string .= X3DGenerator->tab;
   $string .= $this->getRange;
   return $string;
}
1;
__END__
        print '';
        print 'wantref: ', Want::wantref() if Want::wantref();
        print 'VOID'      if Want::want('VOID');
        print 'SCALAR'    if Want::want('SCALAR');
        print 'REF'       if Want::want('REF');
        print 'REFSCALAR' if Want::want('REFSCALAR');
        print 'CODE'      if Want::want('CODE');
        print 'HASH'      if Want::want('HASH');
        print 'ARRAY'     if Want::want('ARRAY');
        print 'GLOB'      if Want::want('GLOB');
        print 'OBJECT'    if Want::want('OBJECT');
        print 'BOOL'      if Want::want('BOOL');
        print 'LIST'      if Want::want('LIST');
        print 'COUNT'     if Want::want('COUNT');
        print 'Infinity'  if Want::want('Infinity');
        print 'LVALUE'    if Want::want('LVALUE');
        print 'ASSIGN'    if Want::want('ASSIGN');
        print 'RVALUE'    if Want::want('RVALUE');