On Mon, 11 Apr 2022 16:37:03 GMT, Jan Lahoda <jlah...@openjdk.org> wrote:
> This is a (preliminary) patch for javac implementation for the third preview > of pattern matching for switch (type patterns in switches). > > Draft JLS: > http://cr.openjdk.java.net/~gbierman/PatternSwitchPlusRecordPatterns/PatternSwitchPlusRecordPatterns-20220407/specs/patterns-switch-jls.html > > The changes are: > -there are no guarded patterns anymore, guards are not bound to the > CaseElement (JLS 15.28) > -a new contextual keyword `when` is used to add a guard, instead of `&&` > -`null` selector value is handled on switch level (if a switch has `case > null`, it is used, otherwise a NPE is thrown), rather than on pattern > matching level. > -total patterns are allowed in `instanceof` > -`java.lang.MatchException` is added for the case where a switch is > exhaustive (due to sealed types) at compile-time, but not at runtime. > > Feedback is welcome! > > Thanks! This pull request has now been integrated. Changeset: 0155e4b7 Author: Jan Lahoda <jlah...@openjdk.org> URL: https://git.openjdk.java.net/jdk/commit/0155e4b76bb0889e516811647aede500a7812db1 Stats: 1093 lines in 56 files changed: 549 ins; 320 del; 224 mod 8282274: Compiler implementation for Pattern Matching for switch (Third Preview) Co-authored-by: Brian Goetz <briango...@openjdk.org> Co-authored-by: Jan Lahoda <jlah...@openjdk.org> Reviewed-by: mcimadamore, vromero, abimpoudis ------------- PR: https://git.openjdk.java.net/jdk/pull/8182
