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toString helper [message #1059487]

Sun, 19 May 2013 13:04

Eclipse User

Dears,
I have a helper that's defined as this:

helper context MyPackage!MyClass def: toString() : String = 'Self To String;'

But I need to set a boolean attribute in self (MyPackage!MyClass) to true when the "toString" function is called.
I can't write self.myAttibute=true because my helper returns string.

How can I do this?

Re: toString helper [message #1059689 is a reply to message #1059487]

Tue, 21 May 2013 04:46

Eclipse User

Hello,

If you want to set an attribute helper, you have to do it in the "do" section of the corresponding matched rule (e.g.; the one in which your toString helper is actually called).

Re: toString helper [message #1059707 is a reply to message #1059689]

Tue, 21 May 2013 06:02

Eclipse User

But toString is called from another helper that is called from a query not a rule.
So, is there a way to set an attribute in a helper?

Re: toString helper [message #1059720 is a reply to message #1059707]

Tue, 21 May 2013 07:24

Eclipse User

Unfortunately, you cannot add "do" sections to ATL queries.
Maybe you could try to express differently inside your query the needed condition.

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