[PATCH] D124500: [clang-tidy] Support expressions of literals in modernize-macro-to-enum

[Richard via Phabricator via cfe-commits]

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Add a recursive descent parser to match macro expansion tokens against
fully formed valid expressions of integral literals.  Partial expressions will
not be matched -- they can't be valid initializing expressions for an enum.

Fixes #55055


https://reviews.llvm.org/D124500

Files:
  clang-tools-extra/clang-tidy/modernize/CMakeLists.txt
  clang-tools-extra/clang-tidy/modernize/IntegralLiteralExpressionMatcher.cpp
  clang-tools-extra/clang-tidy/modernize/IntegralLiteralExpressionMatcher.h
  clang-tools-extra/clang-tidy/modernize/MacroToEnumCheck.cpp
  clang-tools-extra/test/clang-tidy/checkers/modernize-macro-to-enum.cpp
  clang-tools-extra/unittests/clang-tidy/CMakeLists.txt
  clang-tools-extra/unittests/clang-tidy/ModernizeModuleTest.cpp

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