package org.jtwig.property.resolver.request;
import com.google.common.base.Optional;
import org.jtwig.model.expression.Expression;
import org.jtwig.model.expression.FunctionExpression;
import org.jtwig.model.expression.VariableExpression;
public class PropertyNameExtractor {
public Optional<String> extract (Expression expression) {
if (expression instanceof VariableExpression) {
return Optional.of(((VariableExpression) expression).getIdentifier());
}
if (expression instanceof FunctionExpression) {
return Optional.of(((FunctionExpression) expression).getFunctionIdentifier());
}
return Optional.absent();
}
}