mirror of https://github.com/octoleo/plantuml.git
165 lines
5.4 KiB
Java
165 lines
5.4 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.text.TLineType;
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import net.sourceforge.plantuml.tim.EaterElseIf;
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import net.sourceforge.plantuml.tim.EaterException;
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import net.sourceforge.plantuml.tim.EaterExceptionLocated;
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import net.sourceforge.plantuml.tim.EaterIf;
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import net.sourceforge.plantuml.tim.EaterIfdef;
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import net.sourceforge.plantuml.tim.EaterIfndef;
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import net.sourceforge.plantuml.tim.ExecutionContextIf;
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import net.sourceforge.plantuml.tim.TContext;
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import net.sourceforge.plantuml.tim.TMemory;
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public class CodeIteratorIf 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 CodeIteratorIf(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 EaterException, EaterExceptionLocated {
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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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}
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if (result.getType() == TLineType.IF) {
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logs.add(result);
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executeIf(context, memory, result.getTrimmed());
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next();
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continue;
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} else if (result.getType() == TLineType.IFDEF) {
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logs.add(result);
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executeIfdef(context, memory, result.getTrimmed());
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next();
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continue;
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} else if (result.getType() == TLineType.IFNDEF) {
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logs.add(result);
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executeIfndef(context, memory, result.getTrimmed());
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next();
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continue;
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} else if (result.getType() == TLineType.ELSE) {
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logs.add(result);
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executeElse(context, memory, result.getTrimmed());
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next();
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continue;
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} else if (result.getType() == TLineType.ELSEIF) {
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logs.add(result);
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executeElseIf(context, memory, result.getTrimmed());
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next();
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continue;
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} else if (result.getType() == TLineType.ENDIF) {
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logs.add(result);
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executeEndif(context, memory, result.getTrimmed());
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next();
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continue;
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} else if (memory.peekIf() != null && (memory.areAllIfOk(context, memory) == false)) {
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logs.add(result);
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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 executeIf(TContext context, TMemory memory, StringLocated s)
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throws EaterException, EaterExceptionLocated {
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final EaterIf condition = new EaterIf(s);
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condition.analyze(context, memory);
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final boolean isTrue = condition.isTrue();
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memory.addIf(ExecutionContextIf.fromValue(isTrue));
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}
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private void executeElseIf(TContext context, TMemory memory, StringLocated s)
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throws EaterException, EaterExceptionLocated {
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final ExecutionContextIf poll = (ExecutionContextIf) memory.peekIf();
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if (poll == null)
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throw EaterException.located("No if related to this else", s);
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poll.enteringElseIf();
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if (poll.hasBeenBurn() == false) {
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final EaterElseIf condition = new EaterElseIf(s);
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condition.analyze(context, memory);
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final boolean isTrue = condition.isTrue();
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if (isTrue)
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poll.nowInSomeElseIf();
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}
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}
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private void executeIfdef(TContext context, TMemory memory, StringLocated s) throws EaterException {
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final EaterIfdef condition = new EaterIfdef(s);
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condition.analyze(context, memory);
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final boolean isTrue = condition.isTrue(context, memory);
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memory.addIf(ExecutionContextIf.fromValue(isTrue));
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}
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private void executeIfndef(TContext context, TMemory memory, StringLocated s) throws EaterException {
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final EaterIfndef condition = new EaterIfndef(s);
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condition.analyze(context, memory);
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final boolean isTrue = condition.isTrue(context, memory);
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memory.addIf(ExecutionContextIf.fromValue(isTrue));
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}
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private void executeElse(TContext context, TMemory memory, StringLocated s) throws EaterException {
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final ExecutionContextIf poll = (ExecutionContextIf) memory.peekIf();
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if (poll == null)
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throw EaterException.located("No if related to this else", s);
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poll.nowInElse();
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}
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private void executeEndif(TContext context, TMemory memory, StringLocated s) throws EaterException {
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final ExecutionContextIf poll = (ExecutionContextIf) memory.pollIf();
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if (poll == null)
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throw EaterException.located("No if related to this endif", s);
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}
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}
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