[code-reflection] RFR: Lowering passes on transformer [v2]

[Paul Sandoz]

> The switch operation lowering implementation needs to pass on the given operation transformer when lowering nested content. A given operation transformer may be one created when lowering a try or synchronized operation which may need to insert code when exiting non-exceptionally from the scope of the operation e.g., inserting code before a return operation.

Paul Sandoz has updated the pull request incrementally with one additional commit since the last revision:

  Add test

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Changes:
  - all: https://git.openjdk.org/babylon/pull/492/files
  - new: https://git.openjdk.org/babylon/pull/492/files/14e3885c..b1d18fb2

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=babylon&pr=492&range=01
 - incr: https://webrevs.openjdk.org/?repo=babylon&pr=492&range=00-01

  Stats: 26 lines in 1 file changed: 26 ins; 0 del; 0 mod
  Patch: https://git.openjdk.org/babylon/pull/492.diff
  Fetch: git fetch https://git.openjdk.org/babylon.git pull/492/head:pull/492

PR: https://git.openjdk.org/babylon/pull/492