1 //===--- RedundantControlFlowCheck.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_READABILITY_REDUNDANT_CONTROL_FLOW_H
10 #define LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_READABILITY_REDUNDANT_CONTROL_FLOW_H
11 
12 #include "../ClangTidyCheck.h"
13 
14 namespace clang::tidy::readability {
15 
16 /// Eliminates redundant `return` statements at the end of a function that
17 /// returns `void`.
18 ///
19 /// Eliminates redundant `continue` statements at the end of a loop body.
20 ///
21 /// For the user-facing documentation see:
22 /// http://clang.llvm.org/extra/clang-tidy/checks/readability/redundant-control-flow.html
23 class RedundantControlFlowCheck : public ClangTidyCheck {
24 public:
RedundantControlFlowCheck(StringRef Name,ClangTidyContext * Context)25   RedundantControlFlowCheck(StringRef Name, ClangTidyContext *Context)
26       : ClangTidyCheck(Name, Context) {}
27   void registerMatchers(ast_matchers::MatchFinder *Finder) override;
28   void check(const ast_matchers::MatchFinder::MatchResult &Result) override;
29 
getCheckTraversalKind()30   std::optional<TraversalKind> getCheckTraversalKind() const override {
31     return TK_IgnoreUnlessSpelledInSource;
32   }
33 
34 private:
35   void
36   checkRedundantReturn(const ast_matchers::MatchFinder::MatchResult &Result,
37                        const CompoundStmt *Block);
38 
39   void
40   checkRedundantContinue(const ast_matchers::MatchFinder::MatchResult &Result,
41                          const CompoundStmt *Block);
42 
43   void issueDiagnostic(const ast_matchers::MatchFinder::MatchResult &Result,
44                        const CompoundStmt *Block, const SourceRange &StmtRange,
45                        const char *Diag);
46 };
47 
48 } // namespace clang::tidy::readability
49 
50 #endif // LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_READABILITY_REDUNDANT_CONTROL_FLOW_H
51