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/* ========================================================================
* PlantUML : a free UML diagram generator
* ========================================================================
*
* (C) Copyright 2009-2020, Arnaud Roques
*
* Project Info: http://plantuml.com
*
* If you like this project or if you find it useful, you can support us at:
*
* http://plantuml.com/patreon (only 1$ per month!)
* http://plantuml.com/paypal
*
* This file is part of PlantUML.
*
* PlantUML 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 3 of the License, or
* (at your option) any later version.
*
* PlantUML 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 this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
* USA.
*
*
* Original Author: Arnaud Roques
*
*/
package net.sourceforge.plantuml.version;
import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
import net.sourceforge.plantuml.StringLocated;
public class IteratorCounter2Impl implements IteratorCounter2 {
private List<StringLocated> data;
private List<StringLocated> trace;
private int nb;
public void copyStateFrom(IteratorCounter2 other) {
final IteratorCounter2Impl source = (IteratorCounter2Impl) other;
this.nb = source.nb;
this.data = source.data;
this.trace = source.trace;
}
public IteratorCounter2Impl(List<StringLocated> data) {
this(data, 0, new ArrayList<StringLocated>());
}
private IteratorCounter2Impl(List<StringLocated> data, int nb, List<StringLocated> trace) {
this.data = data;
this.nb = nb;
this.trace = trace;
}
public IteratorCounter2 cloneMe() {
return new IteratorCounter2Impl(data, nb, new ArrayList<StringLocated>(trace));
}
public int currentNum() {
return nb;
}
public boolean hasNext() {
return nb < data.size();
}
public StringLocated next() {
final StringLocated result = data.get(nb);
nb++;
trace.add(result);
return result;
}
public StringLocated peek() {
return data.get(nb);
}
public StringLocated peekPrevious() {
if (nb == 0) {
return null;
}
return data.get(nb - 1);
}
public void remove() {
throw new UnsupportedOperationException();
}
public final List<StringLocated> getTrace() {
return Collections.unmodifiableList(trace);
}
}
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