Hi all,
I was having a closer look and noticed (I am using gwt 1.5.2 still)
that a variable and field that isn't used, isn't removed by the
compiler if it has the class name as value.
I did a little test with the following code.
The example class "LabelWidgetFactoryCms" contains the following
fields and method:
----
private final Logger F_TEST1 = FactoryLogger.getLogger(this.getClass
().getName() + "TEST1");
private final Logger F_TEST2 = FactoryLogger.getLogger("TEST2");
private final String F_TEST3 = "TEST3";
private final Logger F_TEST4 = new Logger(this.getClass().getName() +
"TEST4");
private final Logger F_TEST5 = new Logger("TEST5");
private final String F_TEST6 = this.getClass().getName() + "TEST6";
private final String F_TEST7 = LabelWidgetFactoryCms.class.getName()
+ "TEST";
public Widget createTextWidget(final String key) {
Logger L_TEST1 =
FactoryLogger.getLogger(this.getClass().getName()
+ "TEST1");
Logger L_TEST2 = FactoryLogger.getLogger("TEST2");
String L_TEST3 = "TEST3";
Logger L_TEST4 = new Logger(this.getClass().getName() +
"TEST4");
Logger L_TEST5 = new Logger("TEST5");
String F_TEST6 = this.getClass().getName() + "TEST6";
String F_TEST7 = LabelWidgetFactoryCms.class.getName() +
"TEST7";
return createLabelWidget(findContentItem(key));
}
----
Note:
- FactoryLogger.getLogger(String) simple returns null.
- Neither the fields or the variables aren't used.
The result of compiler with mode PRETTY is the following:
----
function $LabelWidgetFactoryCms_0(this$static, formatter,
toolTipProvider){
getLogger(this$static.getClass$().typeName + 'TEST1');
this$static.getClass$().typeName + 'TEST4';
this$static.getClass$().typeName + 'TEST6';
return this$static;
}
...
function $createTextWidget(this$static, key){
getLogger(this$static.getClass$().typeName + 'TEST1');
this$static.getClass$().typeName + 'TEST4';
this$static.getClass$().typeName + 'TEST6';
return this$static.createLabelWidget($findContentItem_0(this$static,
key));
}
...
----
Conclusion:
- An unused field isn't removed when it includes the "this" class
name.
- An unused variable isn't removed when it included the "this" class
name.
Hmmmm interesting.... especially the difference getClass().getName()
and LabelWidgetFactoryCms.class.getName()
Is this a bug or expected behavior?
-- Ed
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