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//===-- qlogo/datum_iterator.cpp - Iterator class and subclasses implementations -------*-
// C++ -*-===//
//
// This file is part of QLogo.
//
// QLogo 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.
//
// QLogo 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 General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with QLogo. If not, see <http://www.gnu.org/licenses/>.
//
//===----------------------------------------------------------------------===//
///
/// \file
/// This file contains the implementation of the Iterator class and subclasses.
/// Iterators are used internally so they are rather minimal.
///
//===----------------------------------------------------------------------===//
#include "datum.h"
#include <qdebug.h>
/******************************************
*
* Iterator
*
******************************************/
DatumP Iterator::element() {
Q_ASSERT(false);
return DatumP();
}
bool Iterator::elementExists() {
Q_ASSERT(false);
return false;
}
/******************************************
*
* ListIterator
*
******************************************/
ListIterator::ListIterator() {}
ListIterator::ListIterator(DatumP head) {
ptr = head;
}
DatumP ListIterator::element() {
DatumP retval = ptr.listNodeValue()->item;
ptr = ptr.listNodeValue()->next;
return retval;
}
bool ListIterator::elementExists() { return (ptr != nothing); }
/******************************************
*
* ArrayIterator
*
******************************************/
ArrayIterator::ArrayIterator() {}
ArrayIterator::ArrayIterator(QVector<DatumP> *aArray) {
arrayIter = aArray->begin();
end = aArray->end();
}
DatumP ArrayIterator::element() { return *arrayIter++; }
bool ArrayIterator::elementExists() { return (arrayIter != end); }
/******************************************
*
* WordIterator
*
******************************************/
WordIterator::WordIterator() {}
WordIterator::WordIterator(Word *aWord) {
charIter = aWord->rawString.begin();
end = aWord->rawString.end();
}
DatumP WordIterator::element() {
const QChar &c = *charIter++;
return DatumP(new Word(c));
}
bool WordIterator::elementExists() { return (charIter != end); }
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