mirror of https://github.com/octoleo/plantuml.git
103 lines
2.6 KiB
Java
103 lines
2.6 KiB
Java
/* ========================================================================
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* PlantUML : a free UML diagram generator
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* ========================================================================
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*
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* (C) Copyright 2009-2024, Arnaud Roques
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*
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* Project Info: https://plantuml.com
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*
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* If you like this project or if you find it useful, you can support us at:
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*
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* https://plantuml.com/patreon (only 1$ per month!)
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* https://plantuml.com/paypal
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*
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* This file is part of PlantUML.
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*
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* PlantUML is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* PlantUML distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public
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* License for more details.
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*
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* You should have received a copy of the GNU General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
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* USA.
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*
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*
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* Original Author: Arnaud Roques
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*
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*/
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package net.sourceforge.plantuml.tim.iterator;
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import java.util.List;
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import net.sourceforge.plantuml.text.StringLocated;
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import net.sourceforge.plantuml.tim.EaterException;
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public class CodeIteratorImpl implements CodeIterator {
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private final List<StringLocated> list;
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private int current = 0;
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private int countJump = 0;
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static class Position implements CodePosition {
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final int pos;
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Position(int pos) {
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this.pos = pos;
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}
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// @Override
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// public String toString() {
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// return "-->" + list.get(pos);
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// }
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}
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public CodeIteratorImpl(List<StringLocated> list) {
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this.list = list;
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}
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@Override
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public StringLocated peek() {
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if (current == list.size())
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return null;
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if (current > list.size())
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throw new IllegalStateException();
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return list.get(current);
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}
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@Override
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public void next() {
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if (current >= list.size())
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throw new IllegalStateException();
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assert current < list.size();
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current++;
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assert current <= list.size();
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}
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@Override
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public CodePosition getCodePosition() {
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return new Position(current);
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}
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@Override
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public void jumpToCodePosition(CodePosition newPosition, StringLocated location) throws EaterException {
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this.countJump++;
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if (this.countJump > 999)
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throw EaterException.unlocated("Infinite loop?", location);
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final Position pos = (Position) newPosition;
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this.current = pos.pos;
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}
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}
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