clang-tidy: Add initial check for "Don't use else after return".

As per the LLVM coding standards:
http://llvm.org/docs/CodingStandards.html#don-t-use-else-after-a-return

Initial version, probably still quite a bit to do until this is really
useful.

Review: http://reviews.llvm.org/D6927
llvm-svn: 226025

1 files changed, 30 insertions, 0 deletions

diff --git a/clang-tools-extra/clang-tidy/readability/ElseAfterReturnCheck.h b/clang-tools-extra/clang-tidy/readability/ElseAfterReturnCheck.h
new file mode 100644
index 00000000000..2d2b4fb42a2
--- /dev/null
+++ b/clang-tools-extra/clang-tidy/readability/ElseAfterReturnCheck.h
@@ -0,0 +1,30 @@
+//===--- ElseAfterReturnCheck.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_READABILITY_ELSE_AFTER_RETURN_H
+#define LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_READABILITY_ELSE_AFTER_RETURN_H
+
+#include "../ClangTidy.h"
+
+namespace clang {
+namespace tidy {
+
+class ElseAfterReturnCheck : public ClangTidyCheck {
+public:
+  ElseAfterReturnCheck(StringRef Name, ClangTidyContext *Context)
+      : ClangTidyCheck(Name, Context) {}
+  void registerMatchers(ast_matchers::MatchFinder *Finder) override;
+  void check(const ast_matchers::MatchFinder::MatchResult &Result) override;
+};
+
+} // namespace tidy
+} // namespace clang
+
+#endif // LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_READABILITY_ELSE_AFTER_RETURN_H
+