Graeme Rocher created GROOVY-7956:
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Summary: Allow @DelegatesTo on named arguments
Key: GROOVY-7956
URL: https://issues.apache.org/jira/browse/GROOVY-7956
Project: Groovy
Issue Type: New Feature
Components: GEP
Reporter: Graeme Rocher
In order to aid static compilation for builders we have {{@DelegatesTo}} which
allows statically compiled code to know what the delegate of a closure is.
This proposal is to allow {{@DelegatesTo}} on {{Map}} types such that IDEs and
the static compiler can resolve the target type the named arguments are to be
used on.
For example:
{code}
class Farm {
void animal(@DelegatesTo(Animal) Map arguments,
@DelegatesTo(AnimalBuilder) Closure callable) {
def animal = new Animal(arguments)
// handle closure
}
}
class Animal { String name }
{code}
The following code would then fail to compile :
{code}
def farm = new Farm()
// compilation failure, no name property on Animal
farm.animal(nam: "Dog") {
}
{code}
It would then be down to IDEs to also provide support for code completion etc.
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