[PATCH] D147955: [clang-tidy] Extend CheckOptions to support grouping checks options

[Nathan James via Phabricator via cfe-commits]

njames93 created this revision.
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Remove a lot of duplication in configuration files by supporting nested dictionaries in the `CheckOptions` entry

For Example to set `ParameterCase`, `VariableCase` and `MemberCase` in `readability-identifier-naming` this new syntax is supported

  CheckOptions:
    readability-identifier-naming:
      ParameterCase: CamelCase
      VariableCase: camelBack
      MemberCase: UPPER_CASE

This maintains backwards compatability with the old method of input:

  CheckOptions:
    readability-identifier-naming.ParameterCase: CamelCase

And:

  CheckOptions:
    - key: readability-identifier-naming.ParameterCase
      value: CamelCase

This new syntax is also able to be interleaved with the current dictionary type input.

  CheckOptions:
    readability-identifier-naming.ParameterCase: CamelCase
    readability-identifier-naming:
      VariableCase: camelBack
      MemberCase: UPPER_CASE

Typically the current dictionary syntax is meant for checks with only one configured option

The `-dump-config` option has been updated to use the grouped syntax for checks with more than one option(while also having a deterministic ordering)


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D147955

Files:
  clang-tools-extra/clang-tidy/ClangTidyOptions.cpp
  clang-tools-extra/clang-tidy/tool/ClangTidyMain.cpp
  clang-tools-extra/docs/ReleaseNotes.rst
  clang-tools-extra/docs/clang-tidy/index.rst
  clang-tools-extra/test/clang-tidy/checkers/google/module.cpp
  clang-tools-extra/test/clang-tidy/infrastructure/Inputs/config-files/4/44/.clang-tidy
  clang-tools-extra/test/clang-tidy/infrastructure/Inputs/config-files/4/key-dict/.clang-tidy
  clang-tools-extra/test/clang-tidy/infrastructure/config-files.cpp

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