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//===--- BufferDerefCheck.h - clang-tidy-------------------------*- C++ -*-===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
#ifndef LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_MPI_BUFFER_DEREF_H
#define LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_MPI_BUFFER_DEREF_H
#include "../ClangTidyCheck.h"
#include "clang/StaticAnalyzer/Checkers/MPIFunctionClassifier.h"
namespace clang {
namespace tidy {
namespace mpi {
/// This check verifies if a buffer passed to an MPI (Message Passing Interface)
/// function is sufficiently dereferenced. Buffers should be passed as a single
/// pointer or array. As MPI function signatures specify void * for their buffer
/// types, insufficiently dereferenced buffers can be passed, like for example
/// as double pointers or multidimensional arrays, without a compiler warning
/// emitted.
///
/// For the user-facing documentation see:
/// http://clang.llvm.org/extra/clang-tidy/checks/mpi-buffer-deref.html
class BufferDerefCheck : public ClangTidyCheck {
public:
BufferDerefCheck(StringRef Name, ClangTidyContext *Context)
: ClangTidyCheck(Name, Context) {}
void registerMatchers(ast_matchers::MatchFinder *Finder) override;
void check(const ast_matchers::MatchFinder::MatchResult &Result) override;
void onEndOfTranslationUnit() override;
private:
/// Checks for all buffers in an MPI call if they are sufficiently
/// dereferenced.
///
/// \param BufferTypes buffer types
/// \param BufferExprs buffer arguments as expressions
void checkBuffers(ArrayRef<const Type *> BufferTypes,
ArrayRef<const Expr *> BufferExprs);
enum class IndirectionType : unsigned char { Pointer, Array };
Optional<ento::mpi::MPIFunctionClassifier> FuncClassifier;
};
} // namespace mpi
} // namespace tidy
} // namespace clang
#endif // LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_MPI_BUFFER_DEREF_H
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