package org.basex.query.expr;
import static org.basex.query.QueryText.*;
import org.basex.query.QueryContext;
import org.basex.query.QueryException;
import org.basex.query.item.FTxt;
import org.basex.query.item.Item;
import org.basex.query.item.SeqType;
import org.basex.query.iter.Iter;
import org.basex.util.InputInfo;
import org.basex.util.TokenBuilder;
/**
* Text fragment.
*
* @author BaseX Team 2005-12, BSD License
* @author Christian Gruen
*/
public final class CTxt extends CFrag {
/**
* Constructor.
* @param ii input info
* @param t text
*/
public CTxt(final InputInfo ii, final Expr t) {
super(ii, t);
type = SeqType.NOD_ZO;
}
@Override
public FTxt item(final QueryContext ctx, final InputInfo ii)
throws QueryException {
final Iter iter = ctx.iter(expr[0]);
Item it = iter.next();
if(it == null) return null;
final TokenBuilder tb = new TokenBuilder();
boolean more = false;
do {
if(more) tb.add(' ');
tb.add(it.string(ii));
more = true;
} while((it = iter.next()) != null);
return new FTxt(tb.finish());
}
@Override
public String description() {
return info(TEXT);
}
@Override
public String toString() {
return toString(TEXT);
}
}