clang-tidy/altera/StructPackAlignCheck.h

0001 //===--- StructPackAlignCheck.h - clang-tidy --------------------*- C++ -*-===//
0002 //
0003 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
0004 // See https://llvm.org/LICENSE.txt for license information.
0005 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
0006 //
0007 //===----------------------------------------------------------------------===//
0008
0009 #ifndef LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_ALTERA_STRUCTPACKALIGNCHECK_H
0010 #define LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_ALTERA_STRUCTPACKALIGNCHECK_H
0011
0012 #include "../ClangTidyCheck.h"
0013
0014 namespace clang::tidy::altera {
0015
0016 /// Finds structs that are inefficiently packed or aligned, and recommends
0017 /// packing and/or aligning of said structs as needed.
0018 ///
0019 /// For the user-facing documentation see:
0020 /// http://clang.llvm.org/extra/clang-tidy/checks/altera/struct-pack-align.html
0021 class StructPackAlignCheck : public ClangTidyCheck {
0022 public:
0023   StructPackAlignCheck(StringRef Name, ClangTidyContext *Context)
0024       : ClangTidyCheck(Name, Context),
0025     MaxConfiguredAlignment(Options.get("MaxConfiguredAlignment", 128)) {}
0026   void registerMatchers(ast_matchers::MatchFinder *Finder) override;
0027   void check(const ast_matchers::MatchFinder::MatchResult &Result) override;
0028   void storeOptions(ClangTidyOptions::OptionMap &Opts) override;
0029
0030 private:
0031   const unsigned MaxConfiguredAlignment;
0032   CharUnits computeRecommendedAlignment(CharUnits MinByteSize) const;
0033 };
0034
0035 } // namespace clang::tidy::altera
0036
0037 #endif // LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_ALTERA_STRUCTPACKALIGNCHECK_H