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 {
15 namespace tidy {
16 namespace readability {
17 
18 /// Eliminates redundant `return` statements at the end of a function that
19 /// returns `void`.
20 ///
21 /// Eliminates redundant `continue` statements at the end of a loop body.
22 ///
23 /// For the user-facing documentation see:
24 /// http://clang.llvm.org/extra/clang-tidy/checks/readability-redundant-control-flow.html
25 class RedundantControlFlowCheck : public ClangTidyCheck {
26 public:
RedundantControlFlowCheck(StringRef Name,ClangTidyContext * Context)27   RedundantControlFlowCheck(StringRef Name, ClangTidyContext *Context)
28       : ClangTidyCheck(Name, Context) {}
29   void registerMatchers(ast_matchers::MatchFinder *Finder) override;
30   void check(const ast_matchers::MatchFinder::MatchResult &Result) override;
31 
getCheckTraversalKind()32   llvm::Optional<TraversalKind> getCheckTraversalKind() const override {
33     return TK_IgnoreUnlessSpelledInSource;
34   }
35 
36 private:
37   void
38   checkRedundantReturn(const ast_matchers::MatchFinder::MatchResult &Result,
39                        const CompoundStmt *Block);
40 
41   void
42   checkRedundantContinue(const ast_matchers::MatchFinder::MatchResult &Result,
43                          const CompoundStmt *Block);
44 
45   void issueDiagnostic(const ast_matchers::MatchFinder::MatchResult &Result,
46                        const CompoundStmt *Block, const SourceRange &StmtRange,
47                        const char *Diag);
48 };
49 
50 } // namespace readability
51 } // namespace tidy
52 } // namespace clang
53 
54 #endif // LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_READABILITY_REDUNDANT_CONTROL_FLOW_H
55