mirror of https://github.com/octoleo/plantuml.git
130 lines
4.1 KiB
Java
130 lines
4.1 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.json.JsonValue;
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import net.sourceforge.plantuml.text.StringLocated;
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import net.sourceforge.plantuml.text.TLineType;
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import net.sourceforge.plantuml.tim.EaterExceptionLocated;
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import net.sourceforge.plantuml.tim.EaterForeach;
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import net.sourceforge.plantuml.tim.ExecutionContextForeach;
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import net.sourceforge.plantuml.tim.TContext;
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import net.sourceforge.plantuml.tim.TMemory;
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import net.sourceforge.plantuml.tim.TVariableScope;
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import net.sourceforge.plantuml.tim.expression.TValue;
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public class CodeIteratorForeach extends AbstractCodeIterator {
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private final TContext context;
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private final TMemory memory;
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private final List<StringLocated> logs;
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public CodeIteratorForeach(CodeIterator source, TContext context, TMemory memory, List<StringLocated> logs) {
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super(source);
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this.context = context;
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this.memory = memory;
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this.logs = logs;
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}
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public StringLocated peek() throws EaterExceptionLocated {
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int level = 0;
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while (true) {
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final StringLocated result = source.peek();
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if (result == null)
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return null;
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final ExecutionContextForeach foreach = memory.peekForeach();
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if (foreach != null && foreach.isSkipMe()) {
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if (result.getType() == TLineType.FOREACH) {
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level++;
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} else if (result.getType() == TLineType.ENDFOREACH) {
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level--;
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if (level == -1) {
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memory.pollForeach();
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level = 0;
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}
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}
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next();
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continue;
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}
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if (result.getType() == TLineType.FOREACH) {
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logs.add(result);
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executeForeach(memory, result.getTrimmed());
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next();
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continue;
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} else if (result.getType() == TLineType.ENDFOREACH) {
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logs.add(result);
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if (foreach == null)
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throw EaterExceptionLocated.located("No foreach related to this endforeach", result);
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foreach.inc();
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if (foreach.isSkipMe()) {
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memory.pollForeach();
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} else {
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setLoopVariable(memory, foreach, result);
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source.jumpToCodePosition(foreach.getStartForeach(), result);
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}
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next();
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continue;
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}
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return result;
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}
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}
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private void executeForeach(TMemory memory, StringLocated s) throws EaterExceptionLocated {
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final EaterForeach condition = new EaterForeach(s);
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condition.analyze(context, memory);
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final ExecutionContextForeach foreach = ExecutionContextForeach.fromValue(condition.getVarname(),
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condition.getJsonArray(), source.getCodePosition());
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if (condition.isSkip())
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foreach.skipMeNow();
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else
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setLoopVariable(memory, foreach, s);
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memory.addForeach(foreach);
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}
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private void setLoopVariable(TMemory memory, ExecutionContextForeach foreach, StringLocated position)
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throws EaterExceptionLocated {
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final JsonValue first = foreach.getJsonArray().get(foreach.currentIndex());
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memory.putVariable(foreach.getVarname(), TValue.fromJson(first), TVariableScope.GLOBAL, position);
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}
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}
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