1 files changed, 76 insertions, 0 deletions
diff --git a/clang-tools-extra/clang-tidy/modernize/RedundantVoidArgCheck.h b/clang-tools-extra/clang-tidy/modernize/RedundantVoidArgCheck.h
new file mode 100644
index 00000000000..8feb6e5075d
--- /dev/null
+++ b/clang-tools-extra/clang-tidy/modernize/RedundantVoidArgCheck.h
@@ -0,0 +1,76 @@
+//===--- RedundantVoidArgCheck.h - clang-tidy --------------------*- C++-*-===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_MODERNIZE_REDUNDANT_VOID_ARG_CHECK_H
+#define LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_MODERNIZE_REDUNDANT_VOID_ARG_CHECK_H
+
+#include "../ClangTidy.h"
+#include "clang/Lex/Token.h"
+
+#include <string>
+
+namespace clang {
+namespace tidy {
+namespace modernize {
+
+/// \brief Find and remove redundant void argument lists.
+///
+/// Examples:
+///   `int f(void);`                    becomes `int f();`
+///   `int (*f(void))(void);`           becomes `int (*f())();`
+///   `typedef int (*f_t(void))(void);` becomes `typedef int (*f_t())();`
+///   `void (C::*p)(void);`             becomes `void (C::*p)();`
+///   `C::C(void) {}`                   becomes `C::C() {}`
+///   `C::~C(void) {}`                  becomes `C::~C() {}`
+///
+class RedundantVoidArgCheck : public ClangTidyCheck {
+public:
+  RedundantVoidArgCheck(StringRef Name, ClangTidyContext *Context)
+      : ClangTidyCheck(Name, Context) {}
+
+  void registerMatchers(ast_matchers::MatchFinder *Finder) override;
+
+  void check(const ast_matchers::MatchFinder::MatchResult &Result) override;
+
+private:
+  void processFunctionDecl(const ast_matchers::MatchFinder::MatchResult &Result,
+                           const FunctionDecl *Function);
+
+  void processTypedefDecl(const ast_matchers::MatchFinder::MatchResult &Result,
+                          const TypedefDecl *Typedef);
+
+  void processFieldDecl(const ast_matchers::MatchFinder::MatchResult &Result,
+                        const FieldDecl *Member);
+
+  void processVarDecl(const ast_matchers::MatchFinder::MatchResult &Result,
+                      const VarDecl *Var);
+
+  void
+  processNamedCastExpr(const ast_matchers::MatchFinder::MatchResult &Result,
+                       const CXXNamedCastExpr *NamedCast);
+
+  void
+  processExplicitCastExpr(const ast_matchers::MatchFinder::MatchResult &Result,
+                          const ExplicitCastExpr *ExplicitCast);
+
+  void processLambdaExpr(const ast_matchers::MatchFinder::MatchResult &Result,
+                         const LambdaExpr *Lambda);
+
+  void
+  removeVoidArgumentTokens(const ast_matchers::MatchFinder::MatchResult &Result,
+                           SourceRange Range, StringRef GrammarLocation);
+
+  void removeVoidToken(Token VoidToken, StringRef Diagnostic);
+};
+
+} // namespace modernize
+} // namespace tidy
+} // namespace clang
+
+#endif // LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_MODERNIZE_REDUNDANT_VOID_ARG_CHECK_H