Bug 354901

Description Matt Heitz 2011-08-16 20:17:17 EDT

If an enumeration entry isn't given a value by the user, the JavaScript generator's EnumerationTemplate will assign it a numeric value based on its position.  In other words, the two enumerations below will be generated the same way.

enumeration Example1
  shoe, bug, pickle
end

enumeration Example2
  shoe = 1, bug = 2, pickle = 3
end

I wanted to duplicate this in the Java generator.  However when I looked at the JS generation code, I found that it decides an enumeration entry wasn't given a value by testing if EEnumLiteral.getValue() returns zero.

That's not good.  It means it's impossible to have an enum entry with the value zero.  This enumeration will be generated the same as the two above:

enumeration Example3
  shoe = 0, bug = 0, pickle = 0
end

(Yes, it's an absurd example, but we ought to let people set one of the entries to zero.)

The model should either store a default value in the EEnumLiteral based on its position, or there should be a method like EEnumLiteral.hasValue() for the generators to call.

Until the model changes, I'm going to make the Java generator behave like the JS generator.