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1//===----------------------------------------------------------------------===//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-exception6//7//===----------------------------------------------------------------------===//8 9#ifndef LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_BUGPRONE_UNUSEDRETURNVALUECHECK_H10#define LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_BUGPRONE_UNUSEDRETURNVALUECHECK_H11 12#include "../ClangTidyCheck.h"13#include <string>14 15namespace clang::tidy::bugprone {16 17/// Detects function calls where the return value is unused.18///19/// For the user-facing documentation see:20/// https://clang.llvm.org/extra/clang-tidy/checks/bugprone/unused-return-value.html21class UnusedReturnValueCheck : public ClangTidyCheck {22public:23 UnusedReturnValueCheck(StringRef Name, ClangTidyContext *Context);24 void storeOptions(ClangTidyOptions::OptionMap &Opts) override;25 void registerMatchers(ast_matchers::MatchFinder *Finder) override;26 void check(const ast_matchers::MatchFinder::MatchResult &Result) override;27 std::optional<TraversalKind> getCheckTraversalKind() const override {28 return TK_IgnoreUnlessSpelledInSource;29 }30 31private:32 const std::vector<StringRef> CheckedFunctions;33 const std::vector<StringRef> CheckedReturnTypes;34 35protected:36 UnusedReturnValueCheck(StringRef Name, ClangTidyContext *Context,37 std::vector<StringRef> CheckedFunctions);38 UnusedReturnValueCheck(StringRef Name, ClangTidyContext *Context,39 std::vector<StringRef> CheckedFunctions,40 std::vector<StringRef> CheckedReturnTypes,41 bool AllowCastToVoid);42 bool AllowCastToVoid;43};44 45} // namespace clang::tidy::bugprone46 47#endif // LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_BUGPRONE_UNUSEDRETURNVALUECHECK_H48