jroelofs created this revision.
jroelofs added reviewers: njames93, aaron.ballman.
Herald added subscribers: cfe-commits, xazax.hun, mgorny.
Herald added a project: clang.
jroelofs added a child revision: D74669: [clang-tidy] New check: 
bugprone-suspicious-include.
jroelofs marked an inline comment as done.
jroelofs added inline comments.

================
Comment at: clang-tools-extra/clang-tidy/utils/FileExtensionsUtils.h:14
 #include "clang/Basic/SourceManager.h"
+#include "llvm/ADT/Optional.h"
 #include "llvm/ADT/SmallSet.h"
----------------
this belongs in the other patch.


Splitting this out from https://reviews.llvm.org/D74669


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D75489

Files:
  clang-tools-extra/clang-tidy/bugprone/DynamicStaticInitializersCheck.cpp
  clang-tools-extra/clang-tidy/bugprone/DynamicStaticInitializersCheck.h
  clang-tools-extra/clang-tidy/google/GlobalNamesInHeadersCheck.cpp
  clang-tools-extra/clang-tidy/google/GlobalNamesInHeadersCheck.h
  clang-tools-extra/clang-tidy/google/UnnamedNamespaceInHeaderCheck.cpp
  clang-tools-extra/clang-tidy/google/UnnamedNamespaceInHeaderCheck.h
  clang-tools-extra/clang-tidy/misc/DefinitionsInHeadersCheck.cpp
  clang-tools-extra/clang-tidy/misc/DefinitionsInHeadersCheck.h
  clang-tools-extra/clang-tidy/utils/CMakeLists.txt
  clang-tools-extra/clang-tidy/utils/FileExtensionsUtils.cpp
  clang-tools-extra/clang-tidy/utils/FileExtensionsUtils.h
  clang-tools-extra/clang-tidy/utils/HeaderFileExtensionsUtils.cpp
  clang-tools-extra/clang-tidy/utils/HeaderFileExtensionsUtils.h
  clang-tools-extra/clang-tidy/utils/HeaderGuard.cpp
  clang-tools-extra/clang-tidy/utils/HeaderGuard.h

Index: clang-tools-extra/clang-tidy/utils/HeaderGuard.h
===================================================================
--- clang-tools-extra/clang-tidy/utils/HeaderGuard.h
+++ clang-tools-extra/clang-tidy/utils/HeaderGuard.h
@@ -10,7 +10,7 @@
 #define LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_UTILS_HEADERGUARD_H
 
 #include "../ClangTidy.h"
-#include "../utils/HeaderFileExtensionsUtils.h"
+#include "../utils/FileExtensionsUtils.h"
 
 namespace clang {
 namespace tidy {
@@ -29,8 +29,8 @@
       : ClangTidyCheck(Name, Context),
         RawStringHeaderFileExtensions(Options.getLocalOrGlobal(
             "HeaderFileExtensions", utils::defaultHeaderFileExtensions())) {
-    utils::parseHeaderFileExtensions(RawStringHeaderFileExtensions,
-                                     HeaderFileExtensions, ',');
+    utils::parseFileExtensions(RawStringHeaderFileExtensions,
+                               HeaderFileExtensions, ',');
   }
   void registerPPCallbacks(const SourceManager &SM, Preprocessor *PP,
                            Preprocessor *ModuleExpanderPP) override;
@@ -54,7 +54,7 @@
 
 private:
   std::string RawStringHeaderFileExtensions;
-  utils::HeaderFileExtensionsSet HeaderFileExtensions;
+  utils::FileExtensionsSet HeaderFileExtensions;
 };
 
 } // namespace utils
Index: clang-tools-extra/clang-tidy/utils/HeaderGuard.cpp
===================================================================
--- clang-tools-extra/clang-tidy/utils/HeaderGuard.cpp
+++ clang-tools-extra/clang-tidy/utils/HeaderGuard.cpp
@@ -273,13 +273,13 @@
 }
 
 bool HeaderGuardCheck::shouldSuggestEndifComment(StringRef FileName) {
-  return utils::isHeaderFileExtension(FileName, HeaderFileExtensions);
+  return utils::isFileExtension(FileName, HeaderFileExtensions);
 }
 
 bool HeaderGuardCheck::shouldFixHeaderGuard(StringRef FileName) { return true; }
 
 bool HeaderGuardCheck::shouldSuggestToAddHeaderGuard(StringRef FileName) {
-  return utils::isHeaderFileExtension(FileName, HeaderFileExtensions);
+  return utils::isFileExtension(FileName, HeaderFileExtensions);
 }
 
 std::string HeaderGuardCheck::formatEndIf(StringRef HeaderGuard) {
Index: clang-tools-extra/clang-tidy/utils/HeaderFileExtensionsUtils.cpp
===================================================================
--- clang-tools-extra/clang-tidy/utils/HeaderFileExtensionsUtils.cpp
+++ /dev/null
@@ -1,70 +0,0 @@
-//===--- HeaderFileExtensionsUtils.cpp - clang-tidy--------------*- C++ -*-===//
-//
-// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
-// See https://llvm.org/LICENSE.txt for license information.
-// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
-//
-//===----------------------------------------------------------------------===//
-
-#include "HeaderFileExtensionsUtils.h"
-#include "clang/Basic/CharInfo.h"
-#include "llvm/Support/Path.h"
-
-namespace clang {
-namespace tidy {
-namespace utils {
-
-bool isExpansionLocInHeaderFile(
-    SourceLocation Loc, const SourceManager &SM,
-    const HeaderFileExtensionsSet &HeaderFileExtensions) {
-  SourceLocation ExpansionLoc = SM.getExpansionLoc(Loc);
-  return isHeaderFileExtension(SM.getFilename(ExpansionLoc),
-                               HeaderFileExtensions);
-}
-
-bool isPresumedLocInHeaderFile(
-    SourceLocation Loc, SourceManager &SM,
-    const HeaderFileExtensionsSet &HeaderFileExtensions) {
-  PresumedLoc PresumedLocation = SM.getPresumedLoc(Loc);
-  return isHeaderFileExtension(PresumedLocation.getFilename(),
-                               HeaderFileExtensions);
-}
-
-bool isSpellingLocInHeaderFile(
-    SourceLocation Loc, SourceManager &SM,
-    const HeaderFileExtensionsSet &HeaderFileExtensions) {
-  SourceLocation SpellingLoc = SM.getSpellingLoc(Loc);
-  return isHeaderFileExtension(SM.getFilename(SpellingLoc),
-                               HeaderFileExtensions);
-}
-
-bool parseHeaderFileExtensions(StringRef AllHeaderFileExtensions,
-                               HeaderFileExtensionsSet &HeaderFileExtensions,
-                               char delimiter) {
-  SmallVector<StringRef, 5> Suffixes;
-  AllHeaderFileExtensions.split(Suffixes, delimiter);
-  HeaderFileExtensions.clear();
-  for (StringRef Suffix : Suffixes) {
-    StringRef Extension = Suffix.trim();
-    for (StringRef::const_iterator it = Extension.begin();
-         it != Extension.end(); ++it) {
-      if (!isAlphanumeric(*it))
-        return false;
-    }
-    HeaderFileExtensions.insert(Extension);
-  }
-  return true;
-}
-
-bool isHeaderFileExtension(
-    StringRef FileName, const HeaderFileExtensionsSet &HeaderFileExtensions) {
-  StringRef extension = llvm::sys::path::extension(FileName);
-  if (extension.empty())
-    return false;
-  // Skip "." prefix.
-  return HeaderFileExtensions.count(extension.substr(1)) > 0;
-}
-
-} // namespace utils
-} // namespace tidy
-} // namespace clang
Index: clang-tools-extra/clang-tidy/utils/FileExtensionsUtils.h
===================================================================
--- clang-tools-extra/clang-tidy/utils/FileExtensionsUtils.h
+++ clang-tools-extra/clang-tidy/utils/FileExtensionsUtils.h
@@ -1,4 +1,4 @@
-//===--- HeaderFileExtensionsUtils.h - clang-tidy----------------*- C++ -*-===//
+//===--- FileExtensionsUtils.h - clang-tidy --------------------*- C++ -*-===//
 //
 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
 // See https://llvm.org/LICENSE.txt for license information.
@@ -11,6 +11,7 @@
 
 #include "clang/Basic/SourceLocation.h"
 #include "clang/Basic/SourceManager.h"
+#include "llvm/ADT/Optional.h"
 #include "llvm/ADT/SmallSet.h"
 #include "llvm/ADT/StringRef.h"
 
@@ -18,35 +19,31 @@
 namespace tidy {
 namespace utils {
 
-typedef llvm::SmallSet<llvm::StringRef, 5> HeaderFileExtensionsSet;
+typedef llvm::SmallSet<llvm::StringRef, 5> FileExtensionsSet;
 
 /// Checks whether expansion location of \p Loc is in header file.
-bool isExpansionLocInHeaderFile(
-    SourceLocation Loc, const SourceManager &SM,
-    const HeaderFileExtensionsSet &HeaderFileExtensions);
+bool isExpansionLocInHeaderFile(SourceLocation Loc, const SourceManager &SM,
+                                const FileExtensionsSet &HeaderFileExtensions);
 
 /// Checks whether presumed location of \p Loc is in header file.
-bool isPresumedLocInHeaderFile(
-    SourceLocation Loc, SourceManager &SM,
-    const HeaderFileExtensionsSet &HeaderFileExtensions);
+bool isPresumedLocInHeaderFile(SourceLocation Loc, SourceManager &SM,
+                               const FileExtensionsSet &HeaderFileExtensions);
 
 /// Checks whether spelling location of \p Loc is in header file.
-bool isSpellingLocInHeaderFile(
-    SourceLocation Loc, SourceManager &SM,
-    const HeaderFileExtensionsSet &HeaderFileExtensions);
+bool isSpellingLocInHeaderFile(SourceLocation Loc, SourceManager &SM,
+                               const FileExtensionsSet &HeaderFileExtensions);
 
 /// Returns recommended default value for the list of header file
 /// extensions.
 inline StringRef defaultHeaderFileExtensions() { return ",h,hh,hpp,hxx"; }
 
 /// Parses header file extensions from a semicolon-separated list.
-bool parseHeaderFileExtensions(StringRef AllHeaderFileExtensions,
-                               HeaderFileExtensionsSet &HeaderFileExtensions,
-                               char delimiter);
+bool parseFileExtensions(StringRef AllFileExtensions,
+                         FileExtensionsSet &FileExtensions, char Delimiter);
 
-/// Decides whether a file has a header file extension.
-bool isHeaderFileExtension(StringRef FileName,
-                           const HeaderFileExtensionsSet &HeaderFileExtensions);
+/// Decides whether a file has one of the specified file extensions.
+bool isFileExtension(StringRef FileName,
+                     const FileExtensionsSet &FileExtensions);
 
 } // namespace utils
 } // namespace tidy
Index: clang-tools-extra/clang-tidy/utils/FileExtensionsUtils.cpp
===================================================================
--- /dev/null
+++ clang-tools-extra/clang-tidy/utils/FileExtensionsUtils.cpp
@@ -0,0 +1,60 @@
+//===--- FileExtensionsUtils.cpp - clang-tidy -------------------*- C++ -*-===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#include "FileExtensionsUtils.h"
+#include "clang/Basic/CharInfo.h"
+#include "llvm/Support/Path.h"
+
+namespace clang {
+namespace tidy {
+namespace utils {
+
+bool isExpansionLocInHeaderFile(SourceLocation Loc, const SourceManager &SM,
+                                const FileExtensionsSet &HeaderFileExtensions) {
+  SourceLocation ExpansionLoc = SM.getExpansionLoc(Loc);
+  return isFileExtension(SM.getFilename(ExpansionLoc), HeaderFileExtensions);
+}
+
+bool isPresumedLocInHeaderFile(SourceLocation Loc, SourceManager &SM,
+                               const FileExtensionsSet &HeaderFileExtensions) {
+  PresumedLoc PresumedLocation = SM.getPresumedLoc(Loc);
+  return isFileExtension(PresumedLocation.getFilename(), HeaderFileExtensions);
+}
+
+bool isSpellingLocInHeaderFile(SourceLocation Loc, SourceManager &SM,
+                               const FileExtensionsSet &HeaderFileExtensions) {
+  SourceLocation SpellingLoc = SM.getSpellingLoc(Loc);
+  return isFileExtension(SM.getFilename(SpellingLoc), HeaderFileExtensions);
+}
+
+bool parseFileExtensions(StringRef AllFileExtensions,
+                         FileExtensionsSet &FileExtensions, char Delimiter) {
+  SmallVector<StringRef, 5> Suffixes;
+  AllFileExtensions.split(Suffixes, Delimiter);
+  FileExtensions.clear();
+  for (StringRef Suffix : Suffixes) {
+    StringRef Extension = Suffix.trim();
+    if (!llvm::all_of(Extension, isAlphanumeric))
+      return false;
+    FileExtensions.insert(Extension);
+  }
+  return true;
+}
+
+bool isFileExtension(StringRef FileName,
+                     const FileExtensionsSet &FileExtensions) {
+  StringRef extension = llvm::sys::path::extension(FileName);
+  if (extension.empty())
+    return false;
+  // Skip "." prefix.
+  return FileExtensions.count(extension.substr(1)) > 0;
+}
+
+} // namespace utils
+} // namespace tidy
+} // namespace clang
Index: clang-tools-extra/clang-tidy/utils/CMakeLists.txt
===================================================================
--- clang-tools-extra/clang-tidy/utils/CMakeLists.txt
+++ clang-tools-extra/clang-tidy/utils/CMakeLists.txt
@@ -5,8 +5,8 @@
   DeclRefExprUtils.cpp
   ExceptionAnalyzer.cpp
   ExprSequence.cpp
+  FileExtensionsUtils.cpp
   FixItHintUtils.cpp
-  HeaderFileExtensionsUtils.cpp
   HeaderGuard.cpp
   IncludeInserter.cpp
   IncludeSorter.cpp
Index: clang-tools-extra/clang-tidy/misc/DefinitionsInHeadersCheck.h
===================================================================
--- clang-tools-extra/clang-tidy/misc/DefinitionsInHeadersCheck.h
+++ clang-tools-extra/clang-tidy/misc/DefinitionsInHeadersCheck.h
@@ -10,7 +10,7 @@
 #define LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_MISC_DEFINITIONS_IN_HEADERS_H
 
 #include "../ClangTidyCheck.h"
-#include "../utils/HeaderFileExtensionsUtils.h"
+#include "../utils/FileExtensionsUtils.h"
 
 namespace clang {
 namespace tidy {
@@ -40,7 +40,7 @@
 private:
   const bool UseHeaderFileExtension;
   const std::string RawStringHeaderFileExtensions;
-  utils::HeaderFileExtensionsSet HeaderFileExtensions;
+  utils::FileExtensionsSet HeaderFileExtensions;
 };
 
 } // namespace misc
Index: clang-tools-extra/clang-tidy/misc/DefinitionsInHeadersCheck.cpp
===================================================================
--- clang-tools-extra/clang-tidy/misc/DefinitionsInHeadersCheck.cpp
+++ clang-tools-extra/clang-tidy/misc/DefinitionsInHeadersCheck.cpp
@@ -18,8 +18,8 @@
 
 namespace {
 
-AST_MATCHER_P(NamedDecl, usesHeaderFileExtension,
-              utils::HeaderFileExtensionsSet, HeaderFileExtensions) {
+AST_MATCHER_P(NamedDecl, usesHeaderFileExtension, utils::FileExtensionsSet,
+              HeaderFileExtensions) {
   return utils::isExpansionLocInHeaderFile(
       Node.getBeginLoc(), Finder->getASTContext().getSourceManager(),
       HeaderFileExtensions);
@@ -33,8 +33,8 @@
       UseHeaderFileExtension(Options.get("UseHeaderFileExtension", true)),
       RawStringHeaderFileExtensions(Options.getLocalOrGlobal(
           "HeaderFileExtensions", utils::defaultHeaderFileExtensions())) {
-  if (!utils::parseHeaderFileExtensions(RawStringHeaderFileExtensions,
-                                        HeaderFileExtensions, ',')) {
+  if (!utils::parseFileExtensions(RawStringHeaderFileExtensions,
+                                  HeaderFileExtensions, ',')) {
     // FIXME: Find a more suitable way to handle invalid configuration
     // options.
     llvm::errs() << "Invalid header file extension: "
Index: clang-tools-extra/clang-tidy/google/UnnamedNamespaceInHeaderCheck.h
===================================================================
--- clang-tools-extra/clang-tidy/google/UnnamedNamespaceInHeaderCheck.h
+++ clang-tools-extra/clang-tidy/google/UnnamedNamespaceInHeaderCheck.h
@@ -10,7 +10,7 @@
 #define LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_GOOGLE_UNNAMEDNAMESPACEINHEADERCHECK_H
 
 #include "../ClangTidyCheck.h"
-#include "../utils/HeaderFileExtensionsUtils.h"
+#include "../utils/FileExtensionsUtils.h"
 
 namespace clang {
 namespace tidy {
@@ -38,7 +38,7 @@
 
 private:
   const std::string RawStringHeaderFileExtensions;
-  utils::HeaderFileExtensionsSet HeaderFileExtensions;
+  utils::FileExtensionsSet HeaderFileExtensions;
 };
 
 } // namespace build
Index: clang-tools-extra/clang-tidy/google/UnnamedNamespaceInHeaderCheck.cpp
===================================================================
--- clang-tools-extra/clang-tidy/google/UnnamedNamespaceInHeaderCheck.cpp
+++ clang-tools-extra/clang-tidy/google/UnnamedNamespaceInHeaderCheck.cpp
@@ -23,8 +23,8 @@
     : ClangTidyCheck(Name, Context),
       RawStringHeaderFileExtensions(Options.getLocalOrGlobal(
           "HeaderFileExtensions", utils::defaultHeaderFileExtensions())) {
-  if (!utils::parseHeaderFileExtensions(RawStringHeaderFileExtensions,
-                                        HeaderFileExtensions, ',')) {
+  if (!utils::parseFileExtensions(RawStringHeaderFileExtensions,
+                                  HeaderFileExtensions, ',')) {
     llvm::errs() << "Invalid header file extension: "
                  << RawStringHeaderFileExtensions << "\n";
   }
Index: clang-tools-extra/clang-tidy/google/GlobalNamesInHeadersCheck.h
===================================================================
--- clang-tools-extra/clang-tidy/google/GlobalNamesInHeadersCheck.h
+++ clang-tools-extra/clang-tidy/google/GlobalNamesInHeadersCheck.h
@@ -10,7 +10,7 @@
 #define LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_GOOGLE_GLOBALNAMESINHEADERSCHECK_H
 
 #include "../ClangTidyCheck.h"
-#include "../utils/HeaderFileExtensionsUtils.h"
+#include "../utils/FileExtensionsUtils.h"
 
 namespace clang {
 namespace tidy {
@@ -35,7 +35,7 @@
 
 private:
   const std::string RawStringHeaderFileExtensions;
-  utils::HeaderFileExtensionsSet HeaderFileExtensions;
+  utils::FileExtensionsSet HeaderFileExtensions;
 };
 
 } // namespace readability
Index: clang-tools-extra/clang-tidy/google/GlobalNamesInHeadersCheck.cpp
===================================================================
--- clang-tools-extra/clang-tidy/google/GlobalNamesInHeadersCheck.cpp
+++ clang-tools-extra/clang-tidy/google/GlobalNamesInHeadersCheck.cpp
@@ -24,8 +24,8 @@
     : ClangTidyCheck(Name, Context),
       RawStringHeaderFileExtensions(Options.getLocalOrGlobal(
           "HeaderFileExtensions", utils::defaultHeaderFileExtensions())) {
-  if (!utils::parseHeaderFileExtensions(RawStringHeaderFileExtensions,
-                                        HeaderFileExtensions, ',')) {
+  if (!utils::parseFileExtensions(RawStringHeaderFileExtensions,
+                                  HeaderFileExtensions, ',')) {
     llvm::errs() << "Invalid header file extension: "
                  << RawStringHeaderFileExtensions << "\n";
   }
Index: clang-tools-extra/clang-tidy/bugprone/DynamicStaticInitializersCheck.h
===================================================================
--- clang-tools-extra/clang-tidy/bugprone/DynamicStaticInitializersCheck.h
+++ clang-tools-extra/clang-tidy/bugprone/DynamicStaticInitializersCheck.h
@@ -10,7 +10,7 @@
 #define LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_BUGPRONE_DYNAMIC_STATIC_INITIALIZERS_CHECK_H
 
 #include "../ClangTidyCheck.h"
-#include "../utils/HeaderFileExtensionsUtils.h"
+#include "../utils/FileExtensionsUtils.h"
 
 namespace clang {
 namespace tidy {
@@ -33,7 +33,7 @@
 
 private:
   const std::string RawStringHeaderFileExtensions;
-  utils::HeaderFileExtensionsSet HeaderFileExtensions;
+  utils::FileExtensionsSet HeaderFileExtensions;
 };
 
 } // namespace bugprone
Index: clang-tools-extra/clang-tidy/bugprone/DynamicStaticInitializersCheck.cpp
===================================================================
--- clang-tools-extra/clang-tidy/bugprone/DynamicStaticInitializersCheck.cpp
+++ clang-tools-extra/clang-tidy/bugprone/DynamicStaticInitializersCheck.cpp
@@ -31,8 +31,8 @@
     : ClangTidyCheck(Name, Context),
       RawStringHeaderFileExtensions(Options.getLocalOrGlobal(
         "HeaderFileExtensions", utils::defaultHeaderFileExtensions())) {
-  if (!utils::parseHeaderFileExtensions(RawStringHeaderFileExtensions,
-                                        HeaderFileExtensions, ',')) {
+  if (!utils::parseFileExtensions(RawStringHeaderFileExtensions,
+                                  HeaderFileExtensions, ',')) {
     llvm::errs() << "Invalid header file extension: "
                  << RawStringHeaderFileExtensions << "\n";
   }
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