Integrated: 8262889: Compiler implementation for Record Patterns

[Jan Lahoda]

On Tue, 3 May 2022 12:07:50 GMT, Jan Lahoda <jlahoda at openjdk.org> wrote:

> 8262889: Compiler implementation for Record Patterns
> 
> A first version of a patch that introduces record patterns into javac as a preview feature. For the specification, please see:
> http://cr.openjdk.java.net/~gbierman/jep427+405/jep427+405-20220426/specs/patterns-switch-record-patterns-jls.html
> 
> There are two notable tricky parts:
> -in the parser, it was necessary to improve the `analyzePattern` method to handle nested/record patterns, while still keeping error recovery reasonable
> -in the `TransPatterns`, the desugaring of the record patterns is very straightforward - effectivelly the record patterns are desugared into guards/conditions. This will likely be improved in some future version/preview
> 
> `MatchException` has been extended to cover additional cases related to record patterns.

This pull request has now been integrated.

Changeset: e9bddc18
Author:    Jan Lahoda <jlahoda at openjdk.org>
URL:       https://git.openjdk.java.net/jdk/commit/e9bddc18ab91c29d491b0e3bd145d641f6a62c5d
Stats:     2255 lines in 50 files changed: 2169 ins; 15 del; 71 mod

8262889: Compiler implementation for Record Patterns

Co-authored-by: Brian Goetz <briangoetz at openjdk.org>
Co-authored-by: Jan Lahoda <jlahoda at openjdk.org>
Co-authored-by: Aggelos Biboudis <abimpoudis at openjdk.org>
Reviewed-by: mcimadamore, vromero

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PR: https://git.openjdk.java.net/jdk/pull/8516