mirror of https://github.com/octoleo/plantuml.git
79 lines
2.3 KiB
Java
79 lines
2.3 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;
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import net.sourceforge.plantuml.text.StringLocated;
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import net.sourceforge.plantuml.tim.expression.TValue;
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public class EaterAffectation extends Eater {
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public EaterAffectation(StringLocated sl) {
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super(sl.getTrimmed());
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}
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@Override
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public void analyze(TContext context, TMemory memory) throws EaterException {
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skipSpaces();
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checkAndEatChar("!");
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skipSpaces();
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String varname = eatAndGetVarname();
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TVariableScope scope = TVariableScope.lazzyParse(varname);
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if (scope != null) {
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skipSpaces();
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if (peekChar() == '?' || peekChar() == '=') {
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// The variable itself is "local" or "global", which is not a good idea by the
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// way
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scope = null;
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} else
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varname = eatAndGetVarname();
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}
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skipSpaces();
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boolean conditional = false;
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if (peekChar() == '?') {
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checkAndEatChar('?');
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conditional = true;
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}
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checkAndEatChar('=');
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if (conditional)
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if (memory.getVariable(varname) != null)
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return;
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skipSpaces();
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final TValue value = eatExpression(context, memory);
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memory.putVariable(varname, value, scope, getStringLocated());
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}
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}
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