net.sourceforge.plantuml.tim.EaterAffectation Maven / Gradle / Ivy
/* ========================================================================
* PlantUML : a free UML diagram generator
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* (C) Copyright 2009-2023, Arnaud Roques
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* Original Author: Arnaud Roques
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package net.sourceforge.plantuml.tim;
import net.sourceforge.plantuml.StringLocated;
import net.sourceforge.plantuml.tim.expression.TValue;
public class EaterAffectation extends Eater {
public EaterAffectation(StringLocated sl) {
super(sl.getTrimmed());
}
@Override
public void analyze(TContext context, TMemory memory) throws EaterException, EaterExceptionLocated {
skipSpaces();
checkAndEatChar("!");
skipSpaces();
String varname = eatAndGetVarname();
TVariableScope scope = null;
skipSpaces();
boolean conditional = false;
if (peekChar() == '?') {
checkAndEatChar('?');
conditional = true;
}
if (peekChar() != '=') {
scope = TVariableScope.valueOf(varname.toUpperCase());
varname = eatAndGetVarname();
skipSpaces();
}
checkAndEatChar('=');
if (conditional) {
final TValue already = memory.getVariable(varname);
if (already != null) {
return;
}
}
skipSpaces();
final TValue value = eatExpression(context, memory);
memory.putVariable(varname, value, scope);
}
}