defaultsequenceiterator.cpp

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// PTF - Psychological Test Framework
// http://ptf.sourceforge.net
//
// This program is free software; you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation; either version 2 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU Library General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program; if not, write to the Free Software
// Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.

#include <ptf/core/defaultsequenceiterator.hpp>
#include <ptf/core/ptfcore.hpp>
#include <stdexcept>

DefaultSequenceIterator::DefaultSequenceIterator(){
    next = 0;
}

DefaultSequenceIterator::~DefaultSequenceIterator(){
    // nothing to do here
}

bool DefaultSequenceIterator::hasNextTaskId(){
    return ((PtfCore::getSingleton().getSequences().size() > 0) && 
            (PtfCore::getSingleton().getSequences()[0]->size() > next));
}

int DefaultSequenceIterator::getNextTaskId(){
    // get vector with sequences
    vector<Sequence*>& sequences = PtfCore::getSingleton().getSequences();
    // are there more task ids?
    if (hasNextTaskId()) {
        // return next task id from sequence 0 and increase step count
        return (sequences[0]->getTaskId(next++));
    }
    else {
        PtfCore::getSingleton().getMessageLog() 
            << "ERROR:   Sequence has no more task ids.\n";
        throw std::runtime_error("Sequence has no more task ids.");
    }
}

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