[PATCH] D55346: [clang-tidy] check for using declaration scope and qualification

[Shyan Akmal via Phabricator via cfe-commits]

Naysh created this revision.
Naysh added reviewers: EricWF, JonasToth.
Herald added subscribers: cfe-commits, xazax.hun, mgorny.

This patch adds four new, small checks corresponding to the guidelines in https://abseil.io/tips/119.

The checks are:

- Alias Free Headers: makes sure header files do not use convenience aliases
- Anonymous Enclosed Aliases: suggests that using declarations be moved to existing anonymous namespaces
- Qualified Aliases: suggests using declarations be fully qualified
- Safely Scoped: suggests using declarations be moved to innermost namespaces


Repository:
  rCTE Clang Tools Extra

https://reviews.llvm.org/D55346

Files:
  .gitignore
  clang-tidy/abseil/AbseilTidyModule.cpp
  clang-tidy/abseil/AliasFreeHeadersCheck.cpp
  clang-tidy/abseil/AliasFreeHeadersCheck.h
  clang-tidy/abseil/AnonymousEnclosedAliasesCheck.cpp
  clang-tidy/abseil/AnonymousEnclosedAliasesCheck.h
  clang-tidy/abseil/CMakeLists.txt
  clang-tidy/abseil/QualifiedAliasesCheck.cpp
  clang-tidy/abseil/QualifiedAliasesCheck.h
  clang-tidy/abseil/SafelyScopedCheck.cpp
  clang-tidy/abseil/SafelyScopedCheck.h
  docs/ReleaseNotes.rst
  docs/clang-tidy/checks/abseil-alias-free-headers.rst
  docs/clang-tidy/checks/abseil-anonymous-enclosed-aliases.rst
  docs/clang-tidy/checks/abseil-qualified-aliases.rst
  docs/clang-tidy/checks/abseil-safely-scoped.rst
  docs/clang-tidy/checks/list.rst
  test/clang-tidy/abseil-alias-free-headers.hpp
  test/clang-tidy/abseil-anonymous-enclosed-aliases.cpp
  test/clang-tidy/abseil-qualified-aliases.cpp
  test/clang-tidy/abseil-safely-scoped.cpp
  test/clang-tidy/temporaries.cpp

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