Metalama Community•2y ago

Eligibility rule based on target method not returning void

Typically eligibility rules I've put together are based on a specifically typed return or paramters. I can't figured out how to do this so I thought I'd ask here - how can one add an eligibility rule that excludes methods that return a void? Thanks!

2 Replies

Petr Onderka•2y ago

Are you looking for MustNotBeVoid()? E.g.:

c#
public override void BuildEligibility(IEligibilityBuilder<IMethod> builder)
{
    builder.ReturnParameter().MustNotBeVoid();
}

c#
public override void BuildEligibility(IEligibilityBuilder<IMethod> builder)
{
    builder.ReturnParameter().MustNotBeVoid();
}

(I do find it a bit weird that the method only exists for IParameter, when regular parameters can never be void, only the return "parameter".)

Gael Fraiteur•2y ago

I've recently improved the doc: https://doc.metalama.net/conceptual/aspects/eligibility

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Eligibility rule based on target method not returning void