[PATCH] D40854: [clang-tidy] WIP implement cppcoreguidelines check for mixed integer arithmetic

[Jonas Toth via Phabricator via cfe-commits]

JonasToth created this revision.
Herald added subscribers: cfe-commits, kbarton, xazax.hun, mgorny, nemanjai, klimek.

This check implements rules ES.100 and ES.102 of the CppCoreGuidelines 
forbidding to mix `signed` and `unsigned` integer types in arithmetic expression.

It currently functions for the "normal" arithmetic but when implicit casts
to its happen for `short` and `char` i have no idea how to implement that 
properly. Here some advice would be really helpful.


Repository:
  rCTE Clang Tools Extra

https://reviews.llvm.org/D40854

Files:
  clang-tidy/cppcoreguidelines/CMakeLists.txt
  clang-tidy/cppcoreguidelines/CppCoreGuidelinesTidyModule.cpp
  clang-tidy/cppcoreguidelines/MixedIntArithmeticCheck.cpp
  clang-tidy/cppcoreguidelines/MixedIntArithmeticCheck.h
  docs/ReleaseNotes.rst
  docs/clang-tidy/checks/cppcoreguidelines-mixed-int-arithmetic.rst
  docs/clang-tidy/checks/list.rst
  test/clang-tidy/cppcoreguidelines-mixed-int-arithmetic.cpp

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