[GROOVY-6956] Align the parameters of @DelegatesTo and @ClosureParams

• Type: Wish
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 2.3.4
• Fix Version/s: 2.4.0-beta-4
• Assignee: Cédric Champeau
• Reporter: Dimitar Dimitrov
• Created: 17/Jul/14 08:41
• Updated: 03/Apr/17 05:26
• Resolved: 04/Nov/14 04:27

Description

Currently @DelegateTo allows to use the generic type of another argument of the call, but I actually need to delegate to one of the generic parameters of the enclosing class.

I.e. my signature is:

PipelineBuilder<T> map(
     boolean passThroughNulls = true, 
     @ClosureParams(value=FromString.class, options=["T"]) Closure<T> mapper
) 

And I want the mapper closure to be able to refer to the payload through the delegate as well as the 'it' parameter.

Unfortunately @DelegatesTo won't let me do this as it was written prior
to @ClosureParams and it does not support things like FirstParam or FromString...

Aligning the config params of @DeleatesTo and @ClosureParams, will make them more powerful and easier to learn.