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Feedback Aspect¶ ⧉

The feedback aspect defines custom messages to show to the user when an error or a warning is detected in the model.

Can I override error messages? Can I customize any messages that way?

Yes, in this aspect: Feedback - MPS. No, only the messages that support overriding.

Can I use parameters such as the node or concept in the custom message? Can I add new parameters?

Use the code completion in the show message part of the editor, for example, %concept. New parameters can't be added because they are hard coded.

Where can I find these messages in the MPS source code?

Some of those checks come from the structure checker ⧉. There is also the reference scope checker ⧉ and the ConstraintsChildAndPropFacade ⧉, which applies checks.