> This is the current proposed patch for the upcoming JEP 394, for pattern 
> matching for instanceof.
> 
> A summary of changes:
> -making the feature permanent (non-preview)
> -making the binding variables non-final (as per current specification 
> proposal)
> -producing a compile-time error for the case where the expression's type is a 
> subtype of the type test pattern's type (as per current specification 
> proposal)
> -changing the AST structure so that the binding variable has a VariableTree 
> in the AST. BindingPatternTree is preserved and encloses the VariableTree. 
> The reason is better consistency in the API, with nodes like CatchTree, 
> EnhancedForLoop Tree, etc.
> 
> This change will not be integrated until JEP 394 is targetted.

Jan Lahoda has updated the pull request with a new target base due to a merge 
or a rebase. The pull request now contains 19 commits:

 - Merging master into patterns-instanceof3
 - Removing the preview deprecated methods from BindingPatternTree.
 - Merge branch 'master' into patterns-instanceof3
 - Fixing review comments.
 - Cleanup: using a null instead of List.of() as a parameter to 
JavaCompiler.getTask
 - Merge branch 'master' into patterns-instanceof3
 - Fixing more tests.
 - Correcting positions.
 - Improve the AST model.
 - Merge branch 'master' into patterns-instanceof3
 - ... and 9 more: https://git.openjdk.java.net/jdk/compare/ea26ff11...8fbed8c9

-------------

Changes: https://git.openjdk.java.net/jdk/pull/559/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jdk&pr=559&range=04
  Stats: 651 lines in 90 files changed: 228 ins; 310 del; 113 mod
  Patch: https://git.openjdk.java.net/jdk/pull/559.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk pull/559/head:pull/559

PR: https://git.openjdk.java.net/jdk/pull/559

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