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1 //===--- MultiwayPathsCoveredCheck.h - clang-tidy----------------*- C++ -*-===//
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2 //
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3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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4 // See https://llvm.org/LICENSE.txt for license information.
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5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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6 //
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7 //===----------------------------------------------------------------------===//
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8
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9 #ifndef LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_HICPP_MULTIWAY_PATHS_COVERED_H
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10 #define LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_HICPP_MULTIWAY_PATHS_COVERED_H
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11
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12 #include "../ClangTidyCheck.h"
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13
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14 namespace clang::tidy::hicpp {
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15
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16 /// Find occasions where not all codepaths are explicitly covered in code.
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17 /// This includes 'switch' without a 'default'-branch and 'if'-'else if'-chains
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18 /// without a final 'else'-branch.
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19 ///
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20 /// For the user-facing documentation see:
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21 /// http://clang.llvm.org/extra/clang-tidy/checks/hicpp/multiway-paths-covered.html
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22 class MultiwayPathsCoveredCheck : public ClangTidyCheck {
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23 public:
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24 MultiwayPathsCoveredCheck(StringRef Name, ClangTidyContext *Context)
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25 : ClangTidyCheck(Name, Context),
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26 WarnOnMissingElse(Options.get("WarnOnMissingElse", false)) {}
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27 void storeOptions(ClangTidyOptions::OptionMap &Opts) override;
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28 void registerMatchers(ast_matchers::MatchFinder *Finder) override;
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29 void check(const ast_matchers::MatchFinder::MatchResult &Result) override;
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30
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31 private:
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32 void handleSwitchWithDefault(const SwitchStmt *Switch, std::size_t CaseCount);
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33 void handleSwitchWithoutDefault(
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34 const SwitchStmt *Switch, std::size_t CaseCount,
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35 const ast_matchers::MatchFinder::MatchResult &Result);
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36 /// This option can be configured to warn on missing 'else' branches in an
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37 /// 'if-else if' chain. The default is false because this option might be
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38 /// noisy on some code bases.
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39 const bool WarnOnMissingElse;
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40 };
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41
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42 } // namespace clang::tidy::hicpp
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43
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44 #endif // LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_HICPP_MULTIWAY_PATHS_COVERED_H
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