@Override
public Boolean caseRuleCall(RuleCall object) {
if (!visitedRuleCalls.add(object)) return isOptional(object);
acceptor.accept(object);
Set<Parameter> oldConfig = currentConfig;
try {
if (!object.getArguments().isEmpty()) {
currentConfig =
ParameterConfigHelper.getAssignedArguments(object, getParameterValues(object));
} else {
currentConfig = Collections.emptySet();
}
Boolean result = doSwitch(object.getRule()) || isOptional(object);
visitedRuleCalls.remove(object);
return result;
} finally {
currentConfig = oldConfig;
}
}
@Override
public Boolean caseKeyword(Keyword object) {
acceptor.accept(object);
return isOptional(object);
}
@Override
public Boolean caseAssignment(Assignment object) {
acceptor.accept(object);
return doSwitch(object.getTerminal()) || isOptional(object);
}