[code-reflection] RFR: Unify code that generates code model of switch statement and expression [v3]

[Mourad Abbay]

> Unify code that generates code model of switch statement and expression

Mourad Abbay has updated the pull request incrementally with one additional commit since the last revision:

  Refactor

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Changes:
  - all: https://git.openjdk.org/babylon/pull/220/files
  - new: https://git.openjdk.org/babylon/pull/220/files/2be94f11..784670c7

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=babylon&pr=220&range=02
 - incr: https://webrevs.openjdk.org/?repo=babylon&pr=220&range=01-02

  Stats: 48 lines in 1 file changed: 4 ins; 31 del; 13 mod
  Patch: https://git.openjdk.org/babylon/pull/220.diff
  Fetch: git fetch https://git.openjdk.org/babylon.git pull/220/head:pull/220

PR: https://git.openjdk.org/babylon/pull/220