How to use "default scope" in Language Concept Constraints? Follow

Created February 14, 2009 20:01

I have created a set of languages similar to the one in the tutorial (MyCalc, MyCalc2, etc...).

In the generated java however there is a "feature" that I do not find welcome:

the index for inputField is reused from one language to the other.

So, instead of each generated Java file having inputField0, the first language has inputField0, but the second has inputField1 and inputField2, and the third java file has inputField3.

I have followed the steps in the tutorial regarding the "property macro" template, using:

genContext uniqueName from "inputField" in context <no node>.

Would putting the correct value in the <no node> field above help?

If not, would changing the "default scope" in the constraints tab of the InputField concept Edit window fix this?

The existing documentation on "default scope" seems to indicate that is might, but no example is given on how to use it.

Regards,

2 comments

fgenolini

Created February 14, 2009 20:16

I have tried

genContext . unique name from " inputField " in context node . ancestor < concept = Calculator >

but this generates unique names for the variables such as:

inputField1234_0

inputField4321_0

However there is no need for this in Java, as the variables are private local variables inside 2 distinct classes.

I was just trying to avoid clutter and complication / weirdness in the generated Java files.

Regards,

Igor Alshannikov

Created February 17, 2009 02:11

Hi, the unique names generator is very simple - it is guarantied that it will not return the same string twice during the generation session, but it doesn't take in account visibility of the target element (in fact it has not a faintest idea about the target element).

The behavior you have got is all what MPS can offer, I afraid :-(

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