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. ------------- Depends on: https://git.openjdk.java.net/jdk/pull/8182 Commit messages: - 8262889: Compiler implementation for Record Patterns Changes: https://git.openjdk.java.net/jdk/pull/8516/files Webrev: https://webrevs.openjdk.java.net/?repo=jdk&pr=8516&range=00 Issue: https://bugs.openjdk.java.net/browse/JDK-8262889 Stats: 2008 lines in 45 files changed: 1943 ins; 15 del; 50 mod Patch: https://git.openjdk.java.net/jdk/pull/8516.diff Fetch: git fetch https://git.openjdk.java.net/jdk pull/8516/head:pull/8516 PR: https://git.openjdk.java.net/jdk/pull/8516
