Description Anton Kosyakov 2014-09-24 10:21:45 EDT

The following method produces a warning and it is fine:
def boolean foo(Object value) {
	switch value {
		String: true
	}
}

But a similar method with inferred boolean type does not produce a warning:
def foo(Object value) {
	switch value {
		String: true
	}
}

A method with explicit declared boolean type, but with Boolean inferred type for switch expression does not produce a warning also:
def boolean foo(Object value) {
	switch value {
		case String: Boolean.TRUE
	}
}

though the generated Java code can throw a NPE:
public boolean foo(final Object value) {
    Boolean _switchResult = null;
    boolean _matched = false;
    if (!_matched) {
      if (value instanceof String) {
        _matched=true;
        _switchResult = Boolean.TRUE;
      }
    }
    return (_switchResult).booleanValue(); // NullPointerException if a value is not of String type
}