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https://issues.apache.org/jira/browse/GROOVY-7632?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel=16686591#comment-16686591
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ASF GitHub Bot commented on GROOVY-7632:
GitHub user paulk-asert opened a pull request:
https://github.com/apache/groovy/pull/822
GROOVY-7632: Groovy named parameters static check (initial cut of sup…
…port)
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/paulk-asert/groovy groovy7632
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/groovy/pull/822.patch
To close this pull request, make a commit to your master/trunk branch
with (at least) the following in the commit message:
This closes #822
commit b53eba0249b976ca3554867d78ef974e56c5f189
Author: Paul King
Date: 2018-11-14T14:33:14Z
GROOVY-7632: Groovy named parameters static check (initial cut of support)
> Groovy named parameters static check
>
>
> Key: GROOVY-7632
> URL: https://issues.apache.org/jira/browse/GROOVY-7632
> Project: Groovy
> Issue Type: Improvement
> Components: groovy-jdk, Static Type Checker
>Reporter: Daniil Ovchinnikov
>Priority: Major
>
> It would be really nice if groovy will include some annotation for type
> checking named params.
> For example we do not know what map is expected until we go into source.
> {code:title=Annotation|borderStyle=solid}
> @Retention(RetentionPolicy.RUNTIME)
> @Target({ElementType.PARAMETER})
> public @interface NamedParams {
> NamedParam[] value();
> boolean unknowns() default false;
> @interface NamedParam {
> String value();
> Class type() default Object.class;
> int genericTypeIndex() default -1;
> String target() default "";
> boolean required() default false;
> }
> }
> {code}
> {code:title=Example Usage|borderStyle=solid}
> def foo(@NamedParams([
> @NamedParam("bar"),
> @NamedParam(value = "baz", type = String)]) Map map) {
> println map.bar
> println map.baz
> }
> foo(bar: [], baz: "")
> {code}
> In {{@CompileStatic}} case it could be used to fail the compilation if user
> tries to get some unknown value from map, and also fail if user does not pass
> some required argument.
> Also it could be used to annotate map-constructors in compile-time.
> And the last one: it will be VERY useful for IDEs.
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