clang-tools-extra/clang-tidy/altera/StructPackAlignCheck.h

   1 //===--- StructPackAlignCheck.h - clang-tidy --------------------*- C++ -*-===//
   2 //
   3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
   4 // See https://llvm.org/LICENSE.txt for license information.
   5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
   6 //
   7 //===----------------------------------------------------------------------===//
   8
   9 #ifndef LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_ALTERA_STRUCTPACKALIGNCHECK_H
  10 #define LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_ALTERA_STRUCTPACKALIGNCHECK_H
  11
  12 #include "../ClangTidyCheck.h"
  13
  14 namespace clang::tidy::altera {
  15
  16 /// Finds structs that are inefficiently packed or aligned, and recommends
  17 /// packing and/or aligning of said structs as needed.
  18 ///
  19 /// For the user-facing documentation see:
  20 /// http://clang.llvm.org/extra/clang-tidy/checks/altera/struct-pack-align.html
  21 class StructPackAlignCheck : public ClangTidyCheck {
  22 public:
  23   StructPackAlignCheck(StringRef Name, ClangTidyContext *Context)
  24       : ClangTidyCheck(Name, Context),
  25     MaxConfiguredAlignment(Options.get("MaxConfiguredAlignment", 128)) {}
  26   void registerMatchers(ast_matchers::MatchFinder *Finder) override;
  27   void check(const ast_matchers::MatchFinder::MatchResult &Result) override;
  28   void storeOptions(ClangTidyOptions::OptionMap &Opts) override;
  29
  30 private:
  31   const unsigned MaxConfiguredAlignment;
  32   CharUnits computeRecommendedAlignment(CharUnits MinByteSize);
  33 };
  34
  35 } // namespace clang::tidy::altera
  36
  37 #endif // LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_ALTERA_STRUCTPACKALIGNCHECK_H