Add NamespaceCommentCheck to the Google module.

Summary:
This uses a bit hacky way to set the defaults for the spaces before
comments, but it's also one of the simplest ways. Fixed a bug with how the
SpacesBeforeComments option was used.

Reviewers: djasper

Reviewed By: djasper

Subscribers: cfe-commits

Differential Revision: http://reviews.llvm.org/D5410

llvm-svn: 218240

1 files changed, 42 insertions, 0 deletions

diff --git a/clang-tools-extra/clang-tidy/readability/NamespaceCommentCheck.h b/clang-tools-extra/clang-tidy/readability/NamespaceCommentCheck.h
new file mode 100644
index 00000000000..b72eb65150d
--- /dev/null
+++ b/clang-tools-extra/clang-tidy/readability/NamespaceCommentCheck.h
@@ -0,0 +1,42 @@
+//===--- NamespaceCommentCheck.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_NAMESPACECOMMENTCHECK_H
+#define LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_READABILITY_NAMESPACECOMMENTCHECK_H
+
+#include "../ClangTidy.h"
+#include "llvm/Support/Regex.h"
+
+namespace clang {
+namespace tidy {
+namespace readability {
+
+/// \brief Checks that long namespaces have a closing comment.
+///
+/// http://llvm.org/docs/CodingStandards.html#namespace-indentation
+/// http://google-styleguide.googlecode.com/svn/trunk/cppguide.html#Namespaces
+class NamespaceCommentCheck : public ClangTidyCheck {
+public:
+  NamespaceCommentCheck(StringRef Name, ClangTidyContext *Context);
+  void registerMatchers(ast_matchers::MatchFinder *Finder) override;
+  void check(const ast_matchers::MatchFinder::MatchResult &Result) override;
+
+private:
+  void storeOptions(ClangTidyOptions::OptionMap &Options) override;
+
+  llvm::Regex NamespaceCommentPattern;
+  const unsigned ShortNamespaceLines;
+  const unsigned SpacesBeforeComments;
+};
+
+} // namespace readability
+} // namespace tidy
+} // namespace clang
+
+#endif // LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_READABILITY_NAMESPACECOMMENTCHECK_H