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:
StructPackAlignCheck(StringRef Name,ClangTidyContext * Context)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) const;
33 };
34 
35 } // namespace clang::tidy::altera
36 
37 #endif // LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_ALTERA_STRUCTPACKALIGNCHECK_H
38