Integrated: 8374730: Add support for null restriction in j.l.r.Type

[Maurizio Cimadamore]

On Wed, 7 Jan 2026 16:03:42 GMT, Maurizio Cimadamore <mcimadamore at openjdk.org> wrote:

> This PR adds j.l.r.Type support for null restrictions.
> 
> More specifically, a new public interface is added, namely `NullRestrictedType`, modelling types with null restrictions.
> 
> Changes to the signature parsing code have been made so that instances of the new interface are generated accordingly.
> A new test makes sure that everything behaves correctly.
> 
> Note: we should also make sure that the `AnnotatedType` hierarchy is changed to reflect the null-restriction changes, but for now that is lower priority and will be pursued in a separate PR.

This pull request has now been integrated.

Changeset: b460c92c
Author:    Maurizio Cimadamore <mcimadamore at openjdk.org>
URL:       https://git.openjdk.org/valhalla/commit/b460c92c5743423e50c805eeb346678733ae18f3
Stats:     387 lines in 11 files changed: 380 ins; 5 del; 2 mod

8374730: Add support for null restriction in j.l.r.Type

Reviewed-by: vromero

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PR: https://git.openjdk.org/valhalla/pull/1863