diff --git a/clang-tools-extra/clang-tidy/ClangTidy.h b/clang-tools-extra/clang-tidy/ClangTidy.h
--- a/clang-tools-extra/clang-tidy/ClangTidy.h
+++ b/clang-tools-extra/clang-tidy/ClangTidy.h
@@ -9,19 +9,22 @@
 #ifndef LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_CLANGTIDY_H
 #define LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_CLANGTIDY_H
 
-#include "ClangTidyCheck.h"
 #include "ClangTidyDiagnosticConsumer.h"
 #include "ClangTidyOptions.h"
-#include "llvm/Support/raw_ostream.h"
 #include <memory>
 #include <vector>
 
+namespace llvm {
+class raw_ostream;
+} // namespace llvm
+
 namespace clang {
 
+class ASTConsumer;
 class CompilerInstance;
 namespace tooling {
 class CompilationDatabase;
-}
+} // namespace tooling
 
 namespace tidy {
 
diff --git a/clang-tools-extra/clang-tidy/ClangTidy.cpp b/clang-tools-extra/clang-tidy/ClangTidy.cpp
--- a/clang-tools-extra/clang-tidy/ClangTidy.cpp
+++ b/clang-tools-extra/clang-tidy/ClangTidy.cpp
@@ -15,6 +15,7 @@
 //===----------------------------------------------------------------------===//
 
 #include "ClangTidy.h"
+#include "ClangTidyCheck.h"
 #include "ClangTidyDiagnosticConsumer.h"
 #include "ClangTidyModuleRegistry.h"
 #include "ClangTidyProfiling.h"
diff --git a/clang-tools-extra/clang-tidy/ClangTidyCheck.h b/clang-tools-extra/clang-tidy/ClangTidyCheck.h
--- a/clang-tools-extra/clang-tidy/ClangTidyCheck.h
+++ b/clang-tools-extra/clang-tidy/ClangTidyCheck.h
@@ -13,17 +13,16 @@
 #include "ClangTidyOptions.h"
 #include "clang/ASTMatchers/ASTMatchFinder.h"
 #include "clang/Basic/Diagnostic.h"
-#include "clang/Basic/SourceManager.h"
 #include "llvm/ADT/Optional.h"
-#include "llvm/ADT/StringExtras.h"
 #include "llvm/Support/Error.h"
-#include <memory>
 #include <type_traits>
+#include <utility>
 #include <vector>
 
 namespace clang {
 
 class CompilerInstance;
+class SourceManager;
 
 namespace tidy {
 
diff --git a/clang-tools-extra/clang-tidy/ClangTidyDiagnosticConsumer.h b/clang-tools-extra/clang-tidy/ClangTidyDiagnosticConsumer.h
--- a/clang-tools-extra/clang-tidy/ClangTidyDiagnosticConsumer.h
+++ b/clang-tools-extra/clang-tidy/ClangTidyDiagnosticConsumer.h
@@ -12,12 +12,8 @@
 #include "ClangTidyOptions.h"
 #include "ClangTidyProfiling.h"
 #include "clang/Basic/Diagnostic.h"
-#include "clang/Basic/SourceManager.h"
 #include "clang/Tooling/Core/Diagnostic.h"
-#include "clang/Tooling/Refactoring.h"
 #include "llvm/ADT/DenseMap.h"
-#include "llvm/ADT/StringMap.h"
-#include "llvm/Support/Timer.h"
 
 namespace llvm {
 class Regex;
@@ -27,6 +23,7 @@
 
 class ASTContext;
 class CompilerInstance;
+class SourceManager;
 namespace ast_matchers {
 class MatchFinder;
 }
diff --git a/clang-tools-extra/clang-tidy/ClangTidyDiagnosticConsumer.cpp b/clang-tools-extra/clang-tidy/ClangTidyDiagnosticConsumer.cpp
--- a/clang-tools-extra/clang-tidy/ClangTidyDiagnosticConsumer.cpp
+++ b/clang-tools-extra/clang-tidy/ClangTidyDiagnosticConsumer.cpp
@@ -18,16 +18,21 @@
 #include "ClangTidyDiagnosticConsumer.h"
 #include "ClangTidyOptions.h"
 #include "GlobList.h"
+#include "clang/AST/ASTContext.h"
 #include "clang/AST/ASTDiagnostic.h"
 #include "clang/AST/Attr.h"
 #include "clang/Basic/Diagnostic.h"
 #include "clang/Basic/DiagnosticOptions.h"
+#include "clang/Basic/FileManager.h"
+#include "clang/Basic/SourceManager.h"
 #include "clang/Frontend/DiagnosticRenderer.h"
 #include "clang/Tooling/Core/Diagnostic.h"
+#include "clang/Tooling/Core/Replacement.h"
 #include "llvm/ADT/STLExtras.h"
 #include "llvm/ADT/SmallString.h"
-#include "llvm/Support/Regex.h"
+#include "llvm/ADT/StringMap.h"
 #include "llvm/Support/FormatVariadic.h"
+#include "llvm/Support/Regex.h"
 #include <tuple>
 #include <vector>
 using namespace clang;
diff --git a/clang-tools-extra/clang-tidy/ClangTidyModule.h b/clang-tools-extra/clang-tidy/ClangTidyModule.h
--- a/clang-tools-extra/clang-tidy/ClangTidyModule.h
+++ b/clang-tools-extra/clang-tidy/ClangTidyModule.h
@@ -9,17 +9,20 @@
 #ifndef LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_CLANGTIDYMODULE_H
 #define LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_CLANGTIDYMODULE_H
 
-#include "ClangTidy.h"
+#include "ClangTidyOptions.h"
+#include "llvm/ADT/StringMap.h"
 #include "llvm/ADT/StringRef.h"
 #include <functional>
 #include <map>
 #include <memory>
 #include <string>
-#include <utility>
 
 namespace clang {
 namespace tidy {
 
+class ClangTidyCheck;
+class ClangTidyContext;
+
 /// A collection of \c ClangTidyCheckFactory instances.
 ///
 /// All clang-tidy modules register their check factories with an instance of
@@ -27,12 +30,12 @@
 class ClangTidyCheckFactories {
 public:
   using CheckFactory = std::function<std::unique_ptr<ClangTidyCheck>(
-      StringRef Name, ClangTidyContext *Context)>;
+      llvm::StringRef Name, ClangTidyContext *Context)>;
 
   /// Registers check \p Factory with name \p Name.
   ///
   /// For all checks that have default constructors, use \c registerCheck.
-  void registerCheckFactory(StringRef Name, CheckFactory Factory);
+  void registerCheckFactory(llvm::StringRef Name, CheckFactory Factory);
 
   /// Registers the \c CheckType with the name \p Name.
   ///
@@ -55,9 +58,9 @@
   ///   }
   /// };
   /// \endcode
-  template <typename CheckType> void registerCheck(StringRef CheckName) {
+  template <typename CheckType> void registerCheck(llvm::StringRef CheckName) {
     registerCheckFactory(CheckName,
-                         [](StringRef Name, ClangTidyContext *Context) {
+                         [](llvm::StringRef Name, ClangTidyContext *Context) {
                            return std::make_unique<CheckType>(Name, Context);
                          });
   }
diff --git a/clang-tools-extra/clang-tidy/ClangTidyModule.cpp b/clang-tools-extra/clang-tidy/ClangTidyModule.cpp
--- a/clang-tools-extra/clang-tidy/ClangTidyModule.cpp
+++ b/clang-tools-extra/clang-tidy/ClangTidyModule.cpp
@@ -11,6 +11,7 @@
 //===----------------------------------------------------------------------===//
 
 #include "ClangTidyModule.h"
+#include "ClangTidyCheck.h"
 
 namespace clang {
 namespace tidy {
diff --git a/clang-tools-extra/clang-tidy/ClangTidyProfiling.h b/clang-tools-extra/clang-tidy/ClangTidyProfiling.h
--- a/clang-tools-extra/clang-tidy/ClangTidyProfiling.h
+++ b/clang-tools-extra/clang-tidy/ClangTidyProfiling.h
@@ -13,10 +13,11 @@
 #include "llvm/ADT/StringMap.h"
 #include "llvm/Support/Chrono.h"
 #include "llvm/Support/Timer.h"
-#include "llvm/Support/raw_ostream.h"
 #include <string>
-#include <utility>
-#include <vector>
+
+namespace llvm {
+class raw_ostream;
+} // namespace llvm
 
 namespace clang {
 namespace tidy {
diff --git a/clang-tools-extra/clang-tidy/abseil/DurationAdditionCheck.h b/clang-tools-extra/clang-tidy/abseil/DurationAdditionCheck.h
--- a/clang-tools-extra/clang-tidy/abseil/DurationAdditionCheck.h
+++ b/clang-tools-extra/clang-tidy/abseil/DurationAdditionCheck.h
@@ -9,7 +9,7 @@
 #ifndef LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_ABSEIL_TIMEADDITIONCHECK_H
 #define LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_ABSEIL_TIMEADDITIONCHECK_H
 
-#include "../ClangTidy.h"
+#include "../ClangTidyCheck.h"
 
 namespace clang {
 namespace tidy {
diff --git a/clang-tools-extra/clang-tidy/abseil/DurationComparisonCheck.h b/clang-tools-extra/clang-tidy/abseil/DurationComparisonCheck.h
--- a/clang-tools-extra/clang-tidy/abseil/DurationComparisonCheck.h
+++ b/clang-tools-extra/clang-tidy/abseil/DurationComparisonCheck.h
@@ -9,7 +9,7 @@
 #ifndef LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_ABSEIL_DURATIONCOMPARISONCHECK_H
 #define LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_ABSEIL_DURATIONCOMPARISONCHECK_H
 
-#include "../ClangTidy.h"
+#include "../ClangTidyCheck.h"
 
 namespace clang {
 namespace tidy {
diff --git a/clang-tools-extra/clang-tidy/abseil/DurationConversionCastCheck.h b/clang-tools-extra/clang-tidy/abseil/DurationConversionCastCheck.h
--- a/clang-tools-extra/clang-tidy/abseil/DurationConversionCastCheck.h
+++ b/clang-tools-extra/clang-tidy/abseil/DurationConversionCastCheck.h
@@ -9,7 +9,7 @@
 #ifndef LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_ABSEIL_DURATIONCONVERSIONCASTCHECK_H
 #define LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_ABSEIL_DURATIONCONVERSIONCASTCHECK_H
 
-#include "../ClangTidy.h"
+#include "../ClangTidyCheck.h"
 
 namespace clang {
 namespace tidy {
diff --git a/clang-tools-extra/clang-tidy/abseil/DurationDivisionCheck.h b/clang-tools-extra/clang-tidy/abseil/DurationDivisionCheck.h
--- a/clang-tools-extra/clang-tidy/abseil/DurationDivisionCheck.h
+++ b/clang-tools-extra/clang-tidy/abseil/DurationDivisionCheck.h
@@ -9,7 +9,7 @@
 #ifndef LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_ABSEIL_DURATIONDIVISIONCHECK_H_
 #define LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_ABSEIL_DURATIONDIVISIONCHECK_H_
 
-#include "../ClangTidy.h"
+#include "../ClangTidyCheck.h"
 
 namespace clang {
 namespace tidy {
diff --git a/clang-tools-extra/clang-tidy/abseil/DurationDivisionCheck.cpp b/clang-tools-extra/clang-tidy/abseil/DurationDivisionCheck.cpp
--- a/clang-tools-extra/clang-tidy/abseil/DurationDivisionCheck.cpp
+++ b/clang-tools-extra/clang-tidy/abseil/DurationDivisionCheck.cpp
@@ -9,6 +9,7 @@
 #include "DurationDivisionCheck.h"
 #include "clang/AST/ASTContext.h"
 #include "clang/ASTMatchers/ASTMatchFinder.h"
+#include "clang/Lex/Lexer.h"
 
 namespace clang {
 namespace tidy {
diff --git a/clang-tools-extra/clang-tidy/abseil/DurationFactoryFloatCheck.h b/clang-tools-extra/clang-tidy/abseil/DurationFactoryFloatCheck.h
--- a/clang-tools-extra/clang-tidy/abseil/DurationFactoryFloatCheck.h
+++ b/clang-tools-extra/clang-tidy/abseil/DurationFactoryFloatCheck.h
@@ -9,7 +9,7 @@
 #ifndef LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_ABSEIL_DURATIONFACTORYFLOATCHECK_H
 #define LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_ABSEIL_DURATIONFACTORYFLOATCHECK_H
 
-#include "../ClangTidy.h"
+#include "../ClangTidyCheck.h"
 
 namespace clang {
 namespace tidy {
diff --git a/clang-tools-extra/clang-tidy/abseil/DurationFactoryFloatCheck.cpp b/clang-tools-extra/clang-tidy/abseil/DurationFactoryFloatCheck.cpp
--- a/clang-tools-extra/clang-tidy/abseil/DurationFactoryFloatCheck.cpp
+++ b/clang-tools-extra/clang-tidy/abseil/DurationFactoryFloatCheck.cpp
@@ -10,6 +10,7 @@
 #include "DurationRewriter.h"
 #include "clang/AST/ASTContext.h"
 #include "clang/ASTMatchers/ASTMatchFinder.h"
+#include "clang/Lex/Lexer.h"
 #include "clang/Tooling/FixIt.h"
 
 using namespace clang::ast_matchers;
diff --git a/clang-tools-extra/clang-tidy/abseil/DurationFactoryScaleCheck.h b/clang-tools-extra/clang-tidy/abseil/DurationFactoryScaleCheck.h
--- a/clang-tools-extra/clang-tidy/abseil/DurationFactoryScaleCheck.h
+++ b/clang-tools-extra/clang-tidy/abseil/DurationFactoryScaleCheck.h
@@ -9,7 +9,7 @@
 #ifndef LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_ABSEIL_DURATIONFACTORYSCALECHECK_H
 #define LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_ABSEIL_DURATIONFACTORYSCALECHECK_H
 
-#include "../ClangTidy.h"
+#include "../ClangTidyCheck.h"
 
 namespace clang {
 namespace tidy {
diff --git a/clang-tools-extra/clang-tidy/abseil/DurationSubtractionCheck.h b/clang-tools-extra/clang-tidy/abseil/DurationSubtractionCheck.h
--- a/clang-tools-extra/clang-tidy/abseil/DurationSubtractionCheck.h
+++ b/clang-tools-extra/clang-tidy/abseil/DurationSubtractionCheck.h
@@ -9,7 +9,7 @@
 #ifndef LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_ABSEIL_DURATIONSUBTRACTIONCHECK_H
 #define LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_ABSEIL_DURATIONSUBTRACTIONCHECK_H
 
-#include "../ClangTidy.h"
+#include "../ClangTidyCheck.h"
 
 namespace clang {
 namespace tidy {
diff --git a/clang-tools-extra/clang-tidy/abseil/DurationUnnecessaryConversionCheck.h b/clang-tools-extra/clang-tidy/abseil/DurationUnnecessaryConversionCheck.h
--- a/clang-tools-extra/clang-tidy/abseil/DurationUnnecessaryConversionCheck.h
+++ b/clang-tools-extra/clang-tidy/abseil/DurationUnnecessaryConversionCheck.h
@@ -9,7 +9,7 @@
 #ifndef LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_ABSEIL_TIMEDOUBLECONVERSIONCHECK_H
 #define LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_ABSEIL_TIMEDOUBLECONVERSIONCHECK_H
 
-#include "../ClangTidy.h"
+#include "../ClangTidyCheck.h"
 
 namespace clang {
 namespace tidy {
diff --git a/clang-tools-extra/clang-tidy/abseil/FasterStrsplitDelimiterCheck.h b/clang-tools-extra/clang-tidy/abseil/FasterStrsplitDelimiterCheck.h
--- a/clang-tools-extra/clang-tidy/abseil/FasterStrsplitDelimiterCheck.h
+++ b/clang-tools-extra/clang-tidy/abseil/FasterStrsplitDelimiterCheck.h
@@ -9,7 +9,7 @@
 #ifndef LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_ABSEIL_FASTERSTRSPLITDELIMITERCHECK_H
 #define LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_ABSEIL_FASTERSTRSPLITDELIMITERCHECK_H
 
-#include "../ClangTidy.h"
+#include "../ClangTidyCheck.h"
 
 namespace clang {
 namespace tidy {
diff --git a/clang-tools-extra/clang-tidy/abseil/NoInternalDependenciesCheck.h b/clang-tools-extra/clang-tidy/abseil/NoInternalDependenciesCheck.h
--- a/clang-tools-extra/clang-tidy/abseil/NoInternalDependenciesCheck.h
+++ b/clang-tools-extra/clang-tidy/abseil/NoInternalDependenciesCheck.h
@@ -9,7 +9,7 @@
 #ifndef LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_ABSEIL_NOINTERNALDEPSCHECK_H
 #define LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_ABSEIL_NOINTERNALDEPSCHECK_H
 
-#include "../ClangTidy.h"
+#include "../ClangTidyCheck.h"
 
 namespace clang {
 namespace tidy {
diff --git a/clang-tools-extra/clang-tidy/abseil/NoNamespaceCheck.h b/clang-tools-extra/clang-tidy/abseil/NoNamespaceCheck.h
--- a/clang-tools-extra/clang-tidy/abseil/NoNamespaceCheck.h
+++ b/clang-tools-extra/clang-tidy/abseil/NoNamespaceCheck.h
@@ -9,7 +9,7 @@
 #ifndef LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_ABSEIL_NONAMESPACECHECK_H
 #define LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_ABSEIL_NONAMESPACECHECK_H
 
-#include "../ClangTidy.h"
+#include "../ClangTidyCheck.h"
 
 namespace clang {
 namespace tidy {
diff --git a/clang-tools-extra/clang-tidy/abseil/RedundantStrcatCallsCheck.h b/clang-tools-extra/clang-tidy/abseil/RedundantStrcatCallsCheck.h
--- a/clang-tools-extra/clang-tidy/abseil/RedundantStrcatCallsCheck.h
+++ b/clang-tools-extra/clang-tidy/abseil/RedundantStrcatCallsCheck.h
@@ -9,7 +9,7 @@
 #ifndef LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_ABSEIL_REDUNDANTSTRCATCALLSCHECK_H
 #define LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_ABSEIL_REDUNDANTSTRCATCALLSCHECK_H
 
-#include "../ClangTidy.h"
+#include "../ClangTidyCheck.h"
 
 namespace clang {
 namespace tidy {
diff --git a/clang-tools-extra/clang-tidy/abseil/StrCatAppendCheck.h b/clang-tools-extra/clang-tidy/abseil/StrCatAppendCheck.h
--- a/clang-tools-extra/clang-tidy/abseil/StrCatAppendCheck.h
+++ b/clang-tools-extra/clang-tidy/abseil/StrCatAppendCheck.h
@@ -9,7 +9,7 @@
 #ifndef LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_ABSEIL_STRCATAPPENDCHECK_H
 #define LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_ABSEIL_STRCATAPPENDCHECK_H
 
-#include "../ClangTidy.h"
+#include "../ClangTidyCheck.h"
 
 namespace clang {
 namespace tidy {
diff --git a/clang-tools-extra/clang-tidy/abseil/StringFindStartswithCheck.h b/clang-tools-extra/clang-tidy/abseil/StringFindStartswithCheck.h
--- a/clang-tools-extra/clang-tidy/abseil/StringFindStartswithCheck.h
+++ b/clang-tools-extra/clang-tidy/abseil/StringFindStartswithCheck.h
@@ -9,7 +9,7 @@
 #ifndef LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_ABSEIL_STRINGFINDSTARTSWITHCHECK_H
 #define LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_ABSEIL_STRINGFINDSTARTSWITHCHECK_H
 
-#include "../ClangTidy.h"
+#include "../ClangTidyCheck.h"
 #include "../utils/IncludeInserter.h"
 #include "clang/ASTMatchers/ASTMatchFinder.h"
 
diff --git a/clang-tools-extra/clang-tidy/abseil/StringFindStartswithCheck.cpp b/clang-tools-extra/clang-tidy/abseil/StringFindStartswithCheck.cpp
--- a/clang-tools-extra/clang-tidy/abseil/StringFindStartswithCheck.cpp
+++ b/clang-tools-extra/clang-tidy/abseil/StringFindStartswithCheck.cpp
@@ -12,8 +12,8 @@
 #include "clang/AST/ASTContext.h"
 #include "clang/ASTMatchers/ASTMatchers.h"
 #include "clang/Frontend/CompilerInstance.h"
-
-#include <cassert>
+#include "clang/Lex/Lexer.h"
+#include "clang/Lex/Preprocessor.h"
 
 using namespace clang::ast_matchers;
 
diff --git a/clang-tools-extra/clang-tidy/abseil/StringFindStrContainsCheck.h b/clang-tools-extra/clang-tidy/abseil/StringFindStrContainsCheck.h
--- a/clang-tools-extra/clang-tidy/abseil/StringFindStrContainsCheck.h
+++ b/clang-tools-extra/clang-tidy/abseil/StringFindStrContainsCheck.h
@@ -9,7 +9,7 @@
 #ifndef LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_ABSEIL_STRINGFINDSTRCONTAINSCHECK_H
 #define LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_ABSEIL_STRINGFINDSTRCONTAINSCHECK_H
 
-#include "../ClangTidy.h"
+#include "../ClangTidyCheck.h"
 #include "../utils/TransformerClangTidyCheck.h"
 
 namespace clang {
diff --git a/clang-tools-extra/clang-tidy/abseil/TimeComparisonCheck.h b/clang-tools-extra/clang-tidy/abseil/TimeComparisonCheck.h
--- a/clang-tools-extra/clang-tidy/abseil/TimeComparisonCheck.h
+++ b/clang-tools-extra/clang-tidy/abseil/TimeComparisonCheck.h
@@ -9,7 +9,7 @@
 #ifndef LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_ABSEIL_TIMECOMPARECHECK_H
 #define LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_ABSEIL_TIMECOMPARECHECK_H
 
-#include "../ClangTidy.h"
+#include "../ClangTidyCheck.h"
 
 namespace clang {
 namespace tidy {
diff --git a/clang-tools-extra/clang-tidy/abseil/TimeSubtractionCheck.h b/clang-tools-extra/clang-tidy/abseil/TimeSubtractionCheck.h
--- a/clang-tools-extra/clang-tidy/abseil/TimeSubtractionCheck.h
+++ b/clang-tools-extra/clang-tidy/abseil/TimeSubtractionCheck.h
@@ -9,7 +9,7 @@
 #ifndef LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_ABSEIL_TIMESUBTRACTIONCHECK_H
 #define LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_ABSEIL_TIMESUBTRACTIONCHECK_H
 
-#include "../ClangTidy.h"
+#include "../ClangTidyCheck.h"
 
 namespace clang {
 namespace tidy {
diff --git a/clang-tools-extra/clang-tidy/abseil/TimeSubtractionCheck.cpp b/clang-tools-extra/clang-tidy/abseil/TimeSubtractionCheck.cpp
--- a/clang-tools-extra/clang-tidy/abseil/TimeSubtractionCheck.cpp
+++ b/clang-tools-extra/clang-tidy/abseil/TimeSubtractionCheck.cpp
@@ -10,6 +10,7 @@
 #include "DurationRewriter.h"
 #include "clang/AST/ASTContext.h"
 #include "clang/ASTMatchers/ASTMatchFinder.h"
+#include "clang/Lex/Lexer.h"
 #include "clang/Tooling/FixIt.h"
 
 using namespace clang::ast_matchers;
diff --git a/clang-tools-extra/clang-tidy/abseil/UpgradeDurationConversionsCheck.h b/clang-tools-extra/clang-tidy/abseil/UpgradeDurationConversionsCheck.h
--- a/clang-tools-extra/clang-tidy/abseil/UpgradeDurationConversionsCheck.h
+++ b/clang-tools-extra/clang-tidy/abseil/UpgradeDurationConversionsCheck.h
@@ -9,7 +9,7 @@
 #ifndef LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_ABSEIL_UPGRADEDURATIONCONVERSIONSCHECK_H
 #define LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_ABSEIL_UPGRADEDURATIONCONVERSIONSCHECK_H
 
-#include "../ClangTidy.h"
+#include "../ClangTidyCheck.h"
 
 #include <unordered_set>
 
diff --git a/clang-tools-extra/clang-tidy/abseil/UpgradeDurationConversionsCheck.cpp b/clang-tools-extra/clang-tidy/abseil/UpgradeDurationConversionsCheck.cpp
--- a/clang-tools-extra/clang-tidy/abseil/UpgradeDurationConversionsCheck.cpp
+++ b/clang-tools-extra/clang-tidy/abseil/UpgradeDurationConversionsCheck.cpp
@@ -10,6 +10,7 @@
 #include "DurationRewriter.h"
 #include "clang/AST/ASTContext.h"
 #include "clang/ASTMatchers/ASTMatchFinder.h"
+#include "clang/Lex/Lexer.h"
 
 using namespace clang::ast_matchers;
 
diff --git a/clang-tools-extra/clang-tidy/bugprone/BadSignalToKillThreadCheck.cpp b/clang-tools-extra/clang-tidy/bugprone/BadSignalToKillThreadCheck.cpp
--- a/clang-tools-extra/clang-tidy/bugprone/BadSignalToKillThreadCheck.cpp
+++ b/clang-tools-extra/clang-tidy/bugprone/BadSignalToKillThreadCheck.cpp
@@ -9,6 +9,7 @@
 #include "BadSignalToKillThreadCheck.h"
 #include "clang/AST/ASTContext.h"
 #include "clang/ASTMatchers/ASTMatchFinder.h"
+#include "clang/Lex/Preprocessor.h"
 
 using namespace clang::ast_matchers;
 
diff --git a/clang-tools-extra/clang-tidy/bugprone/BranchCloneCheck.h b/clang-tools-extra/clang-tidy/bugprone/BranchCloneCheck.h
--- a/clang-tools-extra/clang-tidy/bugprone/BranchCloneCheck.h
+++ b/clang-tools-extra/clang-tidy/bugprone/BranchCloneCheck.h
@@ -10,7 +10,7 @@
 #ifndef LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_BUGPRONE_BRANCHCLONECHECK_H
 #define LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_BUGPRONE_BRANCHCLONECHECK_H
 
-#include "../ClangTidy.h"
+#include "../ClangTidyCheck.h"
 
 namespace clang {
 namespace tidy {
diff --git a/clang-tools-extra/clang-tidy/bugprone/BranchCloneCheck.cpp b/clang-tools-extra/clang-tidy/bugprone/BranchCloneCheck.cpp
--- a/clang-tools-extra/clang-tidy/bugprone/BranchCloneCheck.cpp
+++ b/clang-tools-extra/clang-tidy/bugprone/BranchCloneCheck.cpp
@@ -11,6 +11,7 @@
 #include "clang/AST/ASTContext.h"
 #include "clang/ASTMatchers/ASTMatchFinder.h"
 #include "clang/Analysis/CloneDetection.h"
+#include "clang/Lex/Lexer.h"
 #include "llvm/Support/Casting.h"
 
 using namespace clang;
diff --git a/clang-tools-extra/clang-tidy/bugprone/MisplacedOperatorInStrlenInAllocCheck.cpp b/clang-tools-extra/clang-tidy/bugprone/MisplacedOperatorInStrlenInAllocCheck.cpp
--- a/clang-tools-extra/clang-tidy/bugprone/MisplacedOperatorInStrlenInAllocCheck.cpp
+++ b/clang-tools-extra/clang-tidy/bugprone/MisplacedOperatorInStrlenInAllocCheck.cpp
@@ -9,6 +9,7 @@
 #include "MisplacedOperatorInStrlenInAllocCheck.h"
 #include "clang/AST/ASTContext.h"
 #include "clang/ASTMatchers/ASTMatchFinder.h"
+#include "clang/Lex/Lexer.h"
 
 using namespace clang::ast_matchers;
 
diff --git a/clang-tools-extra/clang-tidy/bugprone/MisplacedPointerArithmeticInAllocCheck.cpp b/clang-tools-extra/clang-tidy/bugprone/MisplacedPointerArithmeticInAllocCheck.cpp
--- a/clang-tools-extra/clang-tidy/bugprone/MisplacedPointerArithmeticInAllocCheck.cpp
+++ b/clang-tools-extra/clang-tidy/bugprone/MisplacedPointerArithmeticInAllocCheck.cpp
@@ -9,6 +9,7 @@
 #include "MisplacedPointerArithmeticInAllocCheck.h"
 #include "clang/AST/ASTContext.h"
 #include "clang/ASTMatchers/ASTMatchFinder.h"
+#include "clang/Lex/Lexer.h"
 
 using namespace clang::ast_matchers;
 
diff --git a/clang-tools-extra/clang-tidy/bugprone/NotNullTerminatedResultCheck.h b/clang-tools-extra/clang-tidy/bugprone/NotNullTerminatedResultCheck.h
--- a/clang-tools-extra/clang-tidy/bugprone/NotNullTerminatedResultCheck.h
+++ b/clang-tools-extra/clang-tidy/bugprone/NotNullTerminatedResultCheck.h
@@ -9,7 +9,7 @@
 #ifndef LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_BUGPRONE_NOT_NULL_TERMINATED_RESULT_H
 #define LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_BUGPRONE_NOT_NULL_TERMINATED_RESULT_H
 
-#include "../ClangTidy.h"
+#include "../ClangTidyCheck.h"
 
 namespace clang {
 namespace tidy {
diff --git a/clang-tools-extra/clang-tidy/bugprone/NotNullTerminatedResultCheck.cpp b/clang-tools-extra/clang-tidy/bugprone/NotNullTerminatedResultCheck.cpp
--- a/clang-tools-extra/clang-tidy/bugprone/NotNullTerminatedResultCheck.cpp
+++ b/clang-tools-extra/clang-tidy/bugprone/NotNullTerminatedResultCheck.cpp
@@ -12,6 +12,7 @@
 #include "clang/Frontend/CompilerInstance.h"
 #include "clang/Lex/Lexer.h"
 #include "clang/Lex/PPCallbacks.h"
+#include "clang/Lex/Preprocessor.h"
 
 using namespace clang::ast_matchers;
 
diff --git a/clang-tools-extra/clang-tidy/bugprone/PosixReturnCheck.cpp b/clang-tools-extra/clang-tidy/bugprone/PosixReturnCheck.cpp
--- a/clang-tools-extra/clang-tidy/bugprone/PosixReturnCheck.cpp
+++ b/clang-tools-extra/clang-tidy/bugprone/PosixReturnCheck.cpp
@@ -10,6 +10,7 @@
 #include "../utils/Matchers.h"
 #include "clang/AST/ASTContext.h"
 #include "clang/ASTMatchers/ASTMatchFinder.h"
+#include "clang/Lex/Lexer.h"
 
 using namespace clang::ast_matchers;
 
diff --git a/clang-tools-extra/clang-tidy/bugprone/ReservedIdentifierCheck.cpp b/clang-tools-extra/clang-tidy/bugprone/ReservedIdentifierCheck.cpp
--- a/clang-tools-extra/clang-tidy/bugprone/ReservedIdentifierCheck.cpp
+++ b/clang-tools-extra/clang-tidy/bugprone/ReservedIdentifierCheck.cpp
@@ -11,6 +11,7 @@
 #include "../utils/OptionsUtils.h"
 #include "clang/AST/ASTContext.h"
 #include "clang/ASTMatchers/ASTMatchFinder.h"
+#include "clang/Lex/Token.h"
 #include <algorithm>
 #include <cctype>
 
diff --git a/clang-tools-extra/clang-tidy/bugprone/SuspiciousIncludeCheck.cpp b/clang-tools-extra/clang-tidy/bugprone/SuspiciousIncludeCheck.cpp
--- a/clang-tools-extra/clang-tidy/bugprone/SuspiciousIncludeCheck.cpp
+++ b/clang-tools-extra/clang-tidy/bugprone/SuspiciousIncludeCheck.cpp
@@ -8,6 +8,7 @@
 
 #include "SuspiciousIncludeCheck.h"
 #include "clang/AST/ASTContext.h"
+#include "clang/Lex/Preprocessor.h"
 
 namespace clang {
 namespace tidy {
diff --git a/clang-tools-extra/clang-tidy/cppcoreguidelines/AvoidGotoCheck.h b/clang-tools-extra/clang-tidy/cppcoreguidelines/AvoidGotoCheck.h
--- a/clang-tools-extra/clang-tidy/cppcoreguidelines/AvoidGotoCheck.h
+++ b/clang-tools-extra/clang-tidy/cppcoreguidelines/AvoidGotoCheck.h
@@ -9,7 +9,7 @@
 #ifndef LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_CPPCOREGUIDELINES_AVOIDGOTOCHECK_H
 #define LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_CPPCOREGUIDELINES_AVOIDGOTOCHECK_H
 
-#include "../ClangTidy.h"
+#include "../ClangTidyCheck.h"
 
 namespace clang {
 namespace tidy {
diff --git a/clang-tools-extra/clang-tidy/cppcoreguidelines/InitVariablesCheck.cpp b/clang-tools-extra/clang-tidy/cppcoreguidelines/InitVariablesCheck.cpp
--- a/clang-tools-extra/clang-tidy/cppcoreguidelines/InitVariablesCheck.cpp
+++ b/clang-tools-extra/clang-tidy/cppcoreguidelines/InitVariablesCheck.cpp
@@ -10,6 +10,8 @@
 
 #include "clang/AST/ASTContext.h"
 #include "clang/ASTMatchers/ASTMatchFinder.h"
+#include "clang/Lex/PPCallbacks.h"
+#include "clang/Lex/Preprocessor.h"
 
 using namespace clang::ast_matchers;
 
diff --git a/clang-tools-extra/clang-tidy/cppcoreguidelines/InterfacesGlobalInitCheck.h b/clang-tools-extra/clang-tidy/cppcoreguidelines/InterfacesGlobalInitCheck.h
--- a/clang-tools-extra/clang-tidy/cppcoreguidelines/InterfacesGlobalInitCheck.h
+++ b/clang-tools-extra/clang-tidy/cppcoreguidelines/InterfacesGlobalInitCheck.h
@@ -9,7 +9,7 @@
 #ifndef LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_CPPCOREGUIDELINES_INTERFACES_GLOBAL_INIT_H
 #define LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_CPPCOREGUIDELINES_INTERFACES_GLOBAL_INIT_H
 
-#include "../ClangTidy.h"
+#include "../ClangTidyCheck.h"
 
 namespace clang {
 namespace tidy {
diff --git a/clang-tools-extra/clang-tidy/cppcoreguidelines/MacroUsageCheck.h b/clang-tools-extra/clang-tidy/cppcoreguidelines/MacroUsageCheck.h
--- a/clang-tools-extra/clang-tidy/cppcoreguidelines/MacroUsageCheck.h
+++ b/clang-tools-extra/clang-tidy/cppcoreguidelines/MacroUsageCheck.h
@@ -9,11 +9,12 @@
 #ifndef LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_CPPCOREGUIDELINES_MACROUSAGECHECK_H
 #define LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_CPPCOREGUIDELINES_MACROUSAGECHECK_H
 
-#include "../ClangTidy.h"
-#include "clang/Lex/Preprocessor.h"
+#include "../ClangTidyCheck.h"
+#include "clang/Lex/MacroInfo.h"
 #include <string>
 
 namespace clang {
+class MacroDirective;
 namespace tidy {
 namespace cppcoreguidelines {
 
diff --git a/clang-tools-extra/clang-tidy/cppcoreguidelines/MacroUsageCheck.cpp b/clang-tools-extra/clang-tidy/cppcoreguidelines/MacroUsageCheck.cpp
--- a/clang-tools-extra/clang-tidy/cppcoreguidelines/MacroUsageCheck.cpp
+++ b/clang-tools-extra/clang-tidy/cppcoreguidelines/MacroUsageCheck.cpp
@@ -9,6 +9,7 @@
 #include "MacroUsageCheck.h"
 #include "clang/Frontend/CompilerInstance.h"
 #include "clang/Lex/PPCallbacks.h"
+#include "clang/Lex/Preprocessor.h"
 #include "llvm/ADT/STLExtras.h"
 #include "llvm/Support/Regex.h"
 #include <algorithm>
diff --git a/clang-tools-extra/clang-tidy/cppcoreguidelines/NarrowingConversionsCheck.h b/clang-tools-extra/clang-tidy/cppcoreguidelines/NarrowingConversionsCheck.h
--- a/clang-tools-extra/clang-tidy/cppcoreguidelines/NarrowingConversionsCheck.h
+++ b/clang-tools-extra/clang-tidy/cppcoreguidelines/NarrowingConversionsCheck.h
@@ -9,7 +9,7 @@
 #ifndef LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_CPPCOREGUIDELINES_NARROWING_CONVERSIONS_H
 #define LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_CPPCOREGUIDELINES_NARROWING_CONVERSIONS_H
 
-#include "../ClangTidy.h"
+#include "../ClangTidyCheck.h"
 
 namespace clang {
 namespace tidy {
diff --git a/clang-tools-extra/clang-tidy/cppcoreguidelines/NoMallocCheck.h b/clang-tools-extra/clang-tidy/cppcoreguidelines/NoMallocCheck.h
--- a/clang-tools-extra/clang-tidy/cppcoreguidelines/NoMallocCheck.h
+++ b/clang-tools-extra/clang-tidy/cppcoreguidelines/NoMallocCheck.h
@@ -9,9 +9,7 @@
 #ifndef LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_CPPCOREGUIDELINES_NO_MALLOC_H
 #define LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_CPPCOREGUIDELINES_NO_MALLOC_H
 
-#include "../ClangTidy.h"
-#include "clang/AST/ASTContext.h"
-#include "clang/ASTMatchers/ASTMatchFinder.h"
+#include "../ClangTidyCheck.h"
 
 namespace clang {
 namespace tidy {
diff --git a/clang-tools-extra/clang-tidy/cppcoreguidelines/OwningMemoryCheck.h b/clang-tools-extra/clang-tidy/cppcoreguidelines/OwningMemoryCheck.h
--- a/clang-tools-extra/clang-tidy/cppcoreguidelines/OwningMemoryCheck.h
+++ b/clang-tools-extra/clang-tidy/cppcoreguidelines/OwningMemoryCheck.h
@@ -9,7 +9,7 @@
 #ifndef LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_CPPCOREGUIDELINES_OWNING_MEMORY_H
 #define LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_CPPCOREGUIDELINES_OWNING_MEMORY_H
 
-#include "../ClangTidy.h"
+#include "../ClangTidyCheck.h"
 
 namespace clang {
 namespace tidy {
diff --git a/clang-tools-extra/clang-tidy/cppcoreguidelines/ProBoundsArrayToPointerDecayCheck.h b/clang-tools-extra/clang-tidy/cppcoreguidelines/ProBoundsArrayToPointerDecayCheck.h
--- a/clang-tools-extra/clang-tidy/cppcoreguidelines/ProBoundsArrayToPointerDecayCheck.h
+++ b/clang-tools-extra/clang-tidy/cppcoreguidelines/ProBoundsArrayToPointerDecayCheck.h
@@ -9,7 +9,7 @@
 #ifndef LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_CPPCOREGUIDELINES_PRO_BOUNDS_ARRAY_TO_POINTER_DECAY_H
 #define LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_CPPCOREGUIDELINES_PRO_BOUNDS_ARRAY_TO_POINTER_DECAY_H
 
-#include "../ClangTidy.h"
+#include "../ClangTidyCheck.h"
 
 namespace clang {
 namespace tidy {
diff --git a/clang-tools-extra/clang-tidy/cppcoreguidelines/ProBoundsConstantArrayIndexCheck.h b/clang-tools-extra/clang-tidy/cppcoreguidelines/ProBoundsConstantArrayIndexCheck.h
--- a/clang-tools-extra/clang-tidy/cppcoreguidelines/ProBoundsConstantArrayIndexCheck.h
+++ b/clang-tools-extra/clang-tidy/cppcoreguidelines/ProBoundsConstantArrayIndexCheck.h
@@ -9,7 +9,7 @@
 #ifndef LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_CPPCOREGUIDELINES_PRO_BOUNDS_CONSTANT_ARRAY_INDEX_H
 #define LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_CPPCOREGUIDELINES_PRO_BOUNDS_CONSTANT_ARRAY_INDEX_H
 
-#include "../ClangTidy.h"
+#include "../ClangTidyCheck.h"
 #include "../utils/IncludeInserter.h"
 
 namespace clang {
diff --git a/clang-tools-extra/clang-tidy/cppcoreguidelines/ProBoundsPointerArithmeticCheck.h b/clang-tools-extra/clang-tidy/cppcoreguidelines/ProBoundsPointerArithmeticCheck.h
--- a/clang-tools-extra/clang-tidy/cppcoreguidelines/ProBoundsPointerArithmeticCheck.h
+++ b/clang-tools-extra/clang-tidy/cppcoreguidelines/ProBoundsPointerArithmeticCheck.h
@@ -9,7 +9,7 @@
 #ifndef LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_CPPCOREGUIDELINES_PRO_BOUNDS_POINTER_ARITHMETIC_H
 #define LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_CPPCOREGUIDELINES_PRO_BOUNDS_POINTER_ARITHMETIC_H
 
-#include "../ClangTidy.h"
+#include "../ClangTidyCheck.h"
 
 namespace clang {
 namespace tidy {
diff --git a/clang-tools-extra/clang-tidy/cppcoreguidelines/ProTypeConstCastCheck.h b/clang-tools-extra/clang-tidy/cppcoreguidelines/ProTypeConstCastCheck.h
--- a/clang-tools-extra/clang-tidy/cppcoreguidelines/ProTypeConstCastCheck.h
+++ b/clang-tools-extra/clang-tidy/cppcoreguidelines/ProTypeConstCastCheck.h
@@ -9,7 +9,7 @@
 #ifndef LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_CPPCOREGUIDELINES_PRO_TYPE_CONST_CAST_H
 #define LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_CPPCOREGUIDELINES_PRO_TYPE_CONST_CAST_H
 
-#include "../ClangTidy.h"
+#include "../ClangTidyCheck.h"
 
 namespace clang {
 namespace tidy {
diff --git a/clang-tools-extra/clang-tidy/cppcoreguidelines/ProTypeCstyleCastCheck.h b/clang-tools-extra/clang-tidy/cppcoreguidelines/ProTypeCstyleCastCheck.h
--- a/clang-tools-extra/clang-tidy/cppcoreguidelines/ProTypeCstyleCastCheck.h
+++ b/clang-tools-extra/clang-tidy/cppcoreguidelines/ProTypeCstyleCastCheck.h
@@ -9,7 +9,7 @@
 #ifndef LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_CPPCOREGUIDELINES_PRO_TYPE_CSTYLE_CAST_H
 #define LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_CPPCOREGUIDELINES_PRO_TYPE_CSTYLE_CAST_H
 
-#include "../ClangTidy.h"
+#include "../ClangTidyCheck.h"
 
 namespace clang {
 namespace tidy {
diff --git a/clang-tools-extra/clang-tidy/cppcoreguidelines/ProTypeMemberInitCheck.h b/clang-tools-extra/clang-tidy/cppcoreguidelines/ProTypeMemberInitCheck.h
--- a/clang-tools-extra/clang-tidy/cppcoreguidelines/ProTypeMemberInitCheck.h
+++ b/clang-tools-extra/clang-tidy/cppcoreguidelines/ProTypeMemberInitCheck.h
@@ -9,7 +9,7 @@
 #ifndef LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_CPPCOREGUIDELINES_PRO_TYPE_MEMBER_INIT_H
 #define LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_CPPCOREGUIDELINES_PRO_TYPE_MEMBER_INIT_H
 
-#include "../ClangTidy.h"
+#include "../ClangTidyCheck.h"
 
 namespace clang {
 namespace tidy {
diff --git a/clang-tools-extra/clang-tidy/cppcoreguidelines/ProTypeReinterpretCastCheck.h b/clang-tools-extra/clang-tidy/cppcoreguidelines/ProTypeReinterpretCastCheck.h
--- a/clang-tools-extra/clang-tidy/cppcoreguidelines/ProTypeReinterpretCastCheck.h
+++ b/clang-tools-extra/clang-tidy/cppcoreguidelines/ProTypeReinterpretCastCheck.h
@@ -9,7 +9,7 @@
 #ifndef LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_CPPCOREGUIDELINES_PRO_TYPE_REINTERPRETCAST_CHECK_H
 #define LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_CPPCOREGUIDELINES_PRO_TYPE_REINTERPRETCAST_CHECK_H
 
-#include "../ClangTidy.h"
+#include "../ClangTidyCheck.h"
 
 namespace clang {
 namespace tidy {
diff --git a/clang-tools-extra/clang-tidy/cppcoreguidelines/ProTypeStaticCastDowncastCheck.h b/clang-tools-extra/clang-tidy/cppcoreguidelines/ProTypeStaticCastDowncastCheck.h
--- a/clang-tools-extra/clang-tidy/cppcoreguidelines/ProTypeStaticCastDowncastCheck.h
+++ b/clang-tools-extra/clang-tidy/cppcoreguidelines/ProTypeStaticCastDowncastCheck.h
@@ -9,7 +9,7 @@
 #ifndef LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_CPPCOREGUIDELINES_PRO_TYPE_STATIC_CAST_DOWNCAST_H
 #define LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_CPPCOREGUIDELINES_PRO_TYPE_STATIC_CAST_DOWNCAST_H
 
-#include "../ClangTidy.h"
+#include "../ClangTidyCheck.h"
 
 namespace clang {
 namespace tidy {
diff --git a/clang-tools-extra/clang-tidy/cppcoreguidelines/ProTypeUnionAccessCheck.h b/clang-tools-extra/clang-tidy/cppcoreguidelines/ProTypeUnionAccessCheck.h
--- a/clang-tools-extra/clang-tidy/cppcoreguidelines/ProTypeUnionAccessCheck.h
+++ b/clang-tools-extra/clang-tidy/cppcoreguidelines/ProTypeUnionAccessCheck.h
@@ -9,7 +9,7 @@
 #ifndef LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_CPPCOREGUIDELINES_PRO_TYPE_UNION_ACCESS_H
 #define LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_CPPCOREGUIDELINES_PRO_TYPE_UNION_ACCESS_H
 
-#include "../ClangTidy.h"
+#include "../ClangTidyCheck.h"
 
 namespace clang {
 namespace tidy {
diff --git a/clang-tools-extra/clang-tidy/cppcoreguidelines/ProTypeVarargCheck.h b/clang-tools-extra/clang-tidy/cppcoreguidelines/ProTypeVarargCheck.h
--- a/clang-tools-extra/clang-tidy/cppcoreguidelines/ProTypeVarargCheck.h
+++ b/clang-tools-extra/clang-tidy/cppcoreguidelines/ProTypeVarargCheck.h
@@ -9,7 +9,7 @@
 #ifndef LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_CPPCOREGUIDELINES_PRO_TYPE_VARARG_H
 #define LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_CPPCOREGUIDELINES_PRO_TYPE_VARARG_H
 
-#include "../ClangTidy.h"
+#include "../ClangTidyCheck.h"
 
 namespace clang {
 namespace tidy {
diff --git a/clang-tools-extra/clang-tidy/cppcoreguidelines/SlicingCheck.h b/clang-tools-extra/clang-tidy/cppcoreguidelines/SlicingCheck.h
--- a/clang-tools-extra/clang-tidy/cppcoreguidelines/SlicingCheck.h
+++ b/clang-tools-extra/clang-tidy/cppcoreguidelines/SlicingCheck.h
@@ -9,7 +9,7 @@
 #ifndef LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_CPPCOREGUIDELINES_SLICING_H
 #define LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_CPPCOREGUIDELINES_SLICING_H
 
-#include "../ClangTidy.h"
+#include "../ClangTidyCheck.h"
 
 namespace clang {
 namespace tidy {
diff --git a/clang-tools-extra/clang-tidy/cppcoreguidelines/SpecialMemberFunctionsCheck.h b/clang-tools-extra/clang-tidy/cppcoreguidelines/SpecialMemberFunctionsCheck.h
--- a/clang-tools-extra/clang-tidy/cppcoreguidelines/SpecialMemberFunctionsCheck.h
+++ b/clang-tools-extra/clang-tidy/cppcoreguidelines/SpecialMemberFunctionsCheck.h
@@ -9,7 +9,7 @@
 #ifndef LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_CPPCOREGUIDELINES_SPECIAL_MEMBER_FUNCTIONS_H
 #define LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_CPPCOREGUIDELINES_SPECIAL_MEMBER_FUNCTIONS_H
 
-#include "../ClangTidy.h"
+#include "../ClangTidyCheck.h"
 
 #include "llvm/ADT/DenseMapInfo.h"
 
diff --git a/clang-tools-extra/clang-tidy/fuchsia/DefaultArgumentsDeclarationsCheck.cpp b/clang-tools-extra/clang-tidy/fuchsia/DefaultArgumentsDeclarationsCheck.cpp
--- a/clang-tools-extra/clang-tidy/fuchsia/DefaultArgumentsDeclarationsCheck.cpp
+++ b/clang-tools-extra/clang-tidy/fuchsia/DefaultArgumentsDeclarationsCheck.cpp
@@ -7,6 +7,7 @@
 //===----------------------------------------------------------------------===//
 
 #include "DefaultArgumentsDeclarationsCheck.h"
+#include "clang/Lex/Lexer.h"
 
 using namespace clang::ast_matchers;
 
diff --git a/clang-tools-extra/clang-tidy/google/AvoidNSObjectNewCheck.cpp b/clang-tools-extra/clang-tidy/google/AvoidNSObjectNewCheck.cpp
--- a/clang-tools-extra/clang-tidy/google/AvoidNSObjectNewCheck.cpp
+++ b/clang-tools-extra/clang-tidy/google/AvoidNSObjectNewCheck.cpp
@@ -12,6 +12,7 @@
 #include "clang/Basic/LangOptions.h"
 #include "clang/Basic/SourceLocation.h"
 #include "clang/Basic/SourceManager.h"
+#include "clang/Lex/Lexer.h"
 #include "llvm/Support/FormatVariadic.h"
 #include <map>
 #include <string>
diff --git a/clang-tools-extra/clang-tidy/google/AvoidUnderscoreInGoogletestNameCheck.cpp b/clang-tools-extra/clang-tidy/google/AvoidUnderscoreInGoogletestNameCheck.cpp
--- a/clang-tools-extra/clang-tidy/google/AvoidUnderscoreInGoogletestNameCheck.cpp
+++ b/clang-tools-extra/clang-tidy/google/AvoidUnderscoreInGoogletestNameCheck.cpp
@@ -13,6 +13,8 @@
 #include "clang/ASTMatchers/ASTMatchers.h"
 #include "clang/Frontend/CompilerInstance.h"
 #include "clang/Lex/MacroArgs.h"
+#include "clang/Lex/PPCallbacks.h"
+#include "clang/Lex/Preprocessor.h"
 
 namespace clang {
 namespace tidy {
diff --git a/clang-tools-extra/clang-tidy/google/UpgradeGoogletestCaseCheck.cpp b/clang-tools-extra/clang-tidy/google/UpgradeGoogletestCaseCheck.cpp
--- a/clang-tools-extra/clang-tidy/google/UpgradeGoogletestCaseCheck.cpp
+++ b/clang-tools-extra/clang-tidy/google/UpgradeGoogletestCaseCheck.cpp
@@ -9,6 +9,8 @@
 #include "UpgradeGoogletestCaseCheck.h"
 #include "clang/AST/ASTContext.h"
 #include "clang/ASTMatchers/ASTMatchFinder.h"
+#include "clang/Lex/PPCallbacks.h"
+#include "clang/Lex/Preprocessor.h"
 
 using namespace clang::ast_matchers;
 
diff --git a/clang-tools-extra/clang-tidy/hicpp/ExceptionBaseclassCheck.h b/clang-tools-extra/clang-tidy/hicpp/ExceptionBaseclassCheck.h
--- a/clang-tools-extra/clang-tidy/hicpp/ExceptionBaseclassCheck.h
+++ b/clang-tools-extra/clang-tidy/hicpp/ExceptionBaseclassCheck.h
@@ -9,7 +9,7 @@
 #ifndef LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_HICPP_EXCEPTION_BASECLASS_H
 #define LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_HICPP_EXCEPTION_BASECLASS_H
 
-#include "../ClangTidy.h"
+#include "../ClangTidyCheck.h"
 
 namespace clang {
 namespace tidy {
diff --git a/clang-tools-extra/clang-tidy/hicpp/MultiwayPathsCoveredCheck.h b/clang-tools-extra/clang-tidy/hicpp/MultiwayPathsCoveredCheck.h
--- a/clang-tools-extra/clang-tidy/hicpp/MultiwayPathsCoveredCheck.h
+++ b/clang-tools-extra/clang-tidy/hicpp/MultiwayPathsCoveredCheck.h
@@ -9,9 +9,7 @@
 #ifndef LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_HICPP_MULTIWAY_PATHS_COVERED_H
 #define LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_HICPP_MULTIWAY_PATHS_COVERED_H
 
-#include "../ClangTidy.h"
-#include "clang/ASTMatchers/ASTMatchFinder.h"
-#include <iostream>
+#include "../ClangTidyCheck.h"
 
 namespace clang {
 namespace tidy {
diff --git a/clang-tools-extra/clang-tidy/hicpp/NoAssemblerCheck.h b/clang-tools-extra/clang-tidy/hicpp/NoAssemblerCheck.h
--- a/clang-tools-extra/clang-tidy/hicpp/NoAssemblerCheck.h
+++ b/clang-tools-extra/clang-tidy/hicpp/NoAssemblerCheck.h
@@ -9,7 +9,7 @@
 #ifndef LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_HICPP_NO_ASSEMBLER_H
 #define LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_HICPP_NO_ASSEMBLER_H
 
-#include "../ClangTidy.h"
+#include "../ClangTidyCheck.h"
 
 namespace clang {
 namespace tidy {
diff --git a/clang-tools-extra/clang-tidy/hicpp/SignedBitwiseCheck.h b/clang-tools-extra/clang-tidy/hicpp/SignedBitwiseCheck.h
--- a/clang-tools-extra/clang-tidy/hicpp/SignedBitwiseCheck.h
+++ b/clang-tools-extra/clang-tidy/hicpp/SignedBitwiseCheck.h
@@ -9,7 +9,7 @@
 #ifndef LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_HICPP_SIGNED_BITWISE_H
 #define LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_HICPP_SIGNED_BITWISE_H
 
-#include "../ClangTidy.h"
+#include "../ClangTidyCheck.h"
 
 namespace clang {
 namespace tidy {
diff --git a/clang-tools-extra/clang-tidy/llvm/HeaderGuardCheck.cpp b/clang-tools-extra/clang-tidy/llvm/HeaderGuardCheck.cpp
--- a/clang-tools-extra/clang-tidy/llvm/HeaderGuardCheck.cpp
+++ b/clang-tools-extra/clang-tidy/llvm/HeaderGuardCheck.cpp
@@ -7,6 +7,7 @@
 //===----------------------------------------------------------------------===//
 
 #include "HeaderGuardCheck.h"
+#include "clang/Tooling/Tooling.h"
 
 namespace clang {
 namespace tidy {
diff --git a/clang-tools-extra/clang-tidy/llvm/PreferIsaOrDynCastInConditionalsCheck.cpp b/clang-tools-extra/clang-tidy/llvm/PreferIsaOrDynCastInConditionalsCheck.cpp
--- a/clang-tools-extra/clang-tidy/llvm/PreferIsaOrDynCastInConditionalsCheck.cpp
+++ b/clang-tools-extra/clang-tidy/llvm/PreferIsaOrDynCastInConditionalsCheck.cpp
@@ -10,6 +10,7 @@
 #include "PreferIsaOrDynCastInConditionalsCheck.h"
 #include "clang/AST/ASTContext.h"
 #include "clang/ASTMatchers/ASTMatchFinder.h"
+#include "clang/Lex/Lexer.h"
 
 using namespace clang::ast_matchers;
 
diff --git a/clang-tools-extra/clang-tidy/llvmlibc/RestrictSystemLibcHeadersCheck.cpp b/clang-tools-extra/clang-tidy/llvmlibc/RestrictSystemLibcHeadersCheck.cpp
--- a/clang-tools-extra/clang-tidy/llvmlibc/RestrictSystemLibcHeadersCheck.cpp
+++ b/clang-tools-extra/clang-tidy/llvmlibc/RestrictSystemLibcHeadersCheck.cpp
@@ -11,6 +11,7 @@
 #include "clang/ASTMatchers/ASTMatchFinder.h"
 #include "clang/Lex/HeaderSearch.h"
 #include "clang/Lex/HeaderSearchOptions.h"
+#include "clang/Lex/Preprocessor.h"
 
 // FixItHint - Hint to check documentation script to mark this check as
 // providing a FixIt.
diff --git a/clang-tools-extra/clang-tidy/misc/UnusedParametersCheck.cpp b/clang-tools-extra/clang-tidy/misc/UnusedParametersCheck.cpp
--- a/clang-tools-extra/clang-tidy/misc/UnusedParametersCheck.cpp
+++ b/clang-tools-extra/clang-tidy/misc/UnusedParametersCheck.cpp
@@ -13,6 +13,7 @@
 #include "clang/ASTMatchers/ASTMatchFinder.h"
 #include "clang/Lex/Lexer.h"
 #include "llvm/ADT/STLExtras.h"
+#include <unordered_map>
 #include <unordered_set>
 
 using namespace clang::ast_matchers;
diff --git a/clang-tools-extra/clang-tidy/modernize/AvoidBindCheck.cpp b/clang-tools-extra/clang-tidy/modernize/AvoidBindCheck.cpp
--- a/clang-tools-extra/clang-tidy/modernize/AvoidBindCheck.cpp
+++ b/clang-tools-extra/clang-tidy/modernize/AvoidBindCheck.cpp
@@ -18,6 +18,7 @@
 #include "llvm/ADT/SmallSet.h"
 #include "llvm/ADT/SmallVector.h"
 #include "llvm/ADT/StringRef.h"
+#include "llvm/ADT/StringSet.h"
 #include "llvm/Support/Casting.h"
 #include "llvm/Support/FormatVariadic.h"
 #include "llvm/Support/Regex.h"
@@ -255,7 +256,7 @@
 buildBindArguments(const MatchFinder::MatchResult &Result,
                    const CallableInfo &Callable) {
   SmallVector<BindArgument, 4> BindArguments;
-  llvm::Regex MatchPlaceholder("^_([0-9]+)$");
+  static llvm::Regex MatchPlaceholder("^_([0-9]+)$");
 
   const auto *BindCall = Result.Nodes.getNodeAs<CallExpr>("bind");
 
diff --git a/clang-tools-extra/clang-tidy/modernize/ConcatNestedNamespacesCheck.cpp b/clang-tools-extra/clang-tidy/modernize/ConcatNestedNamespacesCheck.cpp
--- a/clang-tools-extra/clang-tidy/modernize/ConcatNestedNamespacesCheck.cpp
+++ b/clang-tools-extra/clang-tidy/modernize/ConcatNestedNamespacesCheck.cpp
@@ -9,8 +9,8 @@
 #include "ConcatNestedNamespacesCheck.h"
 #include "clang/AST/ASTContext.h"
 #include "clang/ASTMatchers/ASTMatchFinder.h"
+#include "clang/Lex/Lexer.h"
 #include <algorithm>
-#include <iterator>
 
 namespace clang {
 namespace tidy {
diff --git a/clang-tools-extra/clang-tidy/modernize/ReplaceDisallowCopyAndAssignMacroCheck.cpp b/clang-tools-extra/clang-tidy/modernize/ReplaceDisallowCopyAndAssignMacroCheck.cpp
--- a/clang-tools-extra/clang-tidy/modernize/ReplaceDisallowCopyAndAssignMacroCheck.cpp
+++ b/clang-tools-extra/clang-tidy/modernize/ReplaceDisallowCopyAndAssignMacroCheck.cpp
@@ -9,6 +9,8 @@
 #include "ReplaceDisallowCopyAndAssignMacroCheck.h"
 #include "clang/Frontend/CompilerInstance.h"
 #include "clang/Lex/MacroArgs.h"
+#include "clang/Lex/PPCallbacks.h"
+#include "clang/Lex/Preprocessor.h"
 #include "llvm/Support/FormatVariadic.h"
 
 namespace clang {
diff --git a/clang-tools-extra/clang-tidy/modernize/UseTrailingReturnTypeCheck.h b/clang-tools-extra/clang-tidy/modernize/UseTrailingReturnTypeCheck.h
--- a/clang-tools-extra/clang-tidy/modernize/UseTrailingReturnTypeCheck.h
+++ b/clang-tools-extra/clang-tidy/modernize/UseTrailingReturnTypeCheck.h
@@ -10,7 +10,8 @@
 #ifndef LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_MODERNIZE_USETRAILINGRETURNTYPECHECK_H
 #define LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_MODERNIZE_USETRAILINGRETURNTYPECHECK_H
 
-#include "../ClangTidy.h"
+#include "../ClangTidyCheck.h"
+#include "clang/Lex/Token.h"
 
 namespace clang {
 namespace tidy {
diff --git a/clang-tools-extra/clang-tidy/modernize/UseTrailingReturnTypeCheck.cpp b/clang-tools-extra/clang-tidy/modernize/UseTrailingReturnTypeCheck.cpp
--- a/clang-tools-extra/clang-tidy/modernize/UseTrailingReturnTypeCheck.cpp
+++ b/clang-tools-extra/clang-tidy/modernize/UseTrailingReturnTypeCheck.cpp
@@ -11,6 +11,7 @@
 #include "clang/AST/ASTContext.h"
 #include "clang/AST/RecursiveASTVisitor.h"
 #include "clang/ASTMatchers/ASTMatchFinder.h"
+#include "clang/Lex/Preprocessor.h"
 #include "clang/Tooling/FixIt.h"
 #include "llvm/ADT/StringExtras.h"
 
diff --git a/clang-tools-extra/clang-tidy/modernize/UseUncaughtExceptionsCheck.cpp b/clang-tools-extra/clang-tidy/modernize/UseUncaughtExceptionsCheck.cpp
--- a/clang-tools-extra/clang-tidy/modernize/UseUncaughtExceptionsCheck.cpp
+++ b/clang-tools-extra/clang-tidy/modernize/UseUncaughtExceptionsCheck.cpp
@@ -9,6 +9,7 @@
 #include "UseUncaughtExceptionsCheck.h"
 #include "clang/AST/ASTContext.h"
 #include "clang/ASTMatchers/ASTMatchFinder.h"
+#include "clang/Lex/Lexer.h"
 
 using namespace clang::ast_matchers;
 
diff --git a/clang-tools-extra/clang-tidy/objc/NSInvocationArgumentLifetimeCheck.cpp b/clang-tools-extra/clang-tidy/objc/NSInvocationArgumentLifetimeCheck.cpp
--- a/clang-tools-extra/clang-tidy/objc/NSInvocationArgumentLifetimeCheck.cpp
+++ b/clang-tools-extra/clang-tidy/objc/NSInvocationArgumentLifetimeCheck.cpp
@@ -8,7 +8,6 @@
 
 #include "NSInvocationArgumentLifetimeCheck.h"
 #include "clang/AST/ASTContext.h"
-#include "clang/AST/Attrs.inc"
 #include "clang/AST/ComputeDependence.h"
 #include "clang/AST/Decl.h"
 #include "clang/AST/Expr.h"
@@ -23,10 +22,10 @@
 #include "clang/Basic/LangOptions.h"
 #include "clang/Basic/SourceLocation.h"
 #include "clang/Basic/SourceManager.h"
+#include "clang/Lex/Lexer.h"
 #include "llvm/ADT/None.h"
 #include "llvm/ADT/Optional.h"
 #include "llvm/ADT/StringRef.h"
-#include "llvm/Support/raw_ostream.h"
 
 using namespace clang::ast_matchers;
 
diff --git a/clang-tools-extra/clang-tidy/objc/SuperSelfCheck.h b/clang-tools-extra/clang-tidy/objc/SuperSelfCheck.h
--- a/clang-tools-extra/clang-tidy/objc/SuperSelfCheck.h
+++ b/clang-tools-extra/clang-tidy/objc/SuperSelfCheck.h
@@ -10,7 +10,7 @@
 #ifndef LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_OBJC_SUPERSELFCHECK_H
 #define LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_OBJC_SUPERSELFCHECK_H
 
-#include "../ClangTidy.h"
+#include "../ClangTidyCheck.h"
 
 namespace clang {
 namespace tidy {
diff --git a/clang-tools-extra/clang-tidy/openmp/ExceptionEscapeCheck.h b/clang-tools-extra/clang-tidy/openmp/ExceptionEscapeCheck.h
--- a/clang-tools-extra/clang-tidy/openmp/ExceptionEscapeCheck.h
+++ b/clang-tools-extra/clang-tidy/openmp/ExceptionEscapeCheck.h
@@ -9,7 +9,7 @@
 #ifndef LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_OPENMP_EXCEPTIONESCAPECHECK_H
 #define LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_OPENMP_EXCEPTIONESCAPECHECK_H
 
-#include "../ClangTidy.h"
+#include "../ClangTidyCheck.h"
 #include "../utils/ExceptionAnalyzer.h"
 
 namespace clang {
diff --git a/clang-tools-extra/clang-tidy/openmp/UseDefaultNoneCheck.h b/clang-tools-extra/clang-tidy/openmp/UseDefaultNoneCheck.h
--- a/clang-tools-extra/clang-tidy/openmp/UseDefaultNoneCheck.h
+++ b/clang-tools-extra/clang-tidy/openmp/UseDefaultNoneCheck.h
@@ -9,7 +9,7 @@
 #ifndef LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_OPENMP_USEDEFAULTNONECHECK_H
 #define LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_OPENMP_USEDEFAULTNONECHECK_H
 
-#include "../ClangTidy.h"
+#include "../ClangTidyCheck.h"
 
 namespace clang {
 namespace tidy {
diff --git a/clang-tools-extra/clang-tidy/performance/NoexceptMoveConstructorCheck.cpp b/clang-tools-extra/clang-tidy/performance/NoexceptMoveConstructorCheck.cpp
--- a/clang-tools-extra/clang-tidy/performance/NoexceptMoveConstructorCheck.cpp
+++ b/clang-tools-extra/clang-tidy/performance/NoexceptMoveConstructorCheck.cpp
@@ -9,6 +9,7 @@
 #include "NoexceptMoveConstructorCheck.h"
 #include "clang/AST/ASTContext.h"
 #include "clang/ASTMatchers/ASTMatchFinder.h"
+#include "clang/Lex/Lexer.h"
 #include "clang/Tooling/FixIt.h"
 
 using namespace clang::ast_matchers;
diff --git a/clang-tools-extra/clang-tidy/portability/RestrictSystemIncludesCheck.h b/clang-tools-extra/clang-tidy/portability/RestrictSystemIncludesCheck.h
--- a/clang-tools-extra/clang-tidy/portability/RestrictSystemIncludesCheck.h
+++ b/clang-tools-extra/clang-tidy/portability/RestrictSystemIncludesCheck.h
@@ -11,6 +11,7 @@
 
 #include "../ClangTidyCheck.h"
 #include "../GlobList.h"
+#include "clang/Lex/PPCallbacks.h"
 
 namespace clang {
 namespace tidy {
diff --git a/clang-tools-extra/clang-tidy/readability/ConvertMemberFunctionsToStatic.h b/clang-tools-extra/clang-tidy/readability/ConvertMemberFunctionsToStatic.h
--- a/clang-tools-extra/clang-tidy/readability/ConvertMemberFunctionsToStatic.h
+++ b/clang-tools-extra/clang-tidy/readability/ConvertMemberFunctionsToStatic.h
@@ -10,7 +10,7 @@
 #ifndef LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_READABILITY_CONVERTMEMFUNCTOSTATIC_H
 #define LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_READABILITY_CONVERTMEMFUNCTOSTATIC_H
 
-#include "../ClangTidy.h"
+#include "../ClangTidyCheck.h"
 
 namespace clang {
 namespace tidy {
diff --git a/clang-tools-extra/clang-tidy/readability/ConvertMemberFunctionsToStatic.cpp b/clang-tools-extra/clang-tidy/readability/ConvertMemberFunctionsToStatic.cpp
--- a/clang-tools-extra/clang-tidy/readability/ConvertMemberFunctionsToStatic.cpp
+++ b/clang-tools-extra/clang-tidy/readability/ConvertMemberFunctionsToStatic.cpp
@@ -13,6 +13,7 @@
 #include "clang/AST/RecursiveASTVisitor.h"
 #include "clang/ASTMatchers/ASTMatchFinder.h"
 #include "clang/Basic/SourceLocation.h"
+#include "clang/Lex/Lexer.h"
 
 using namespace clang::ast_matchers;
 
diff --git a/clang-tools-extra/clang-tidy/readability/ElseAfterReturnCheck.cpp b/clang-tools-extra/clang-tidy/readability/ElseAfterReturnCheck.cpp
--- a/clang-tools-extra/clang-tidy/readability/ElseAfterReturnCheck.cpp
+++ b/clang-tools-extra/clang-tidy/readability/ElseAfterReturnCheck.cpp
@@ -9,6 +9,7 @@
 #include "ElseAfterReturnCheck.h"
 #include "clang/AST/ASTContext.h"
 #include "clang/ASTMatchers/ASTMatchFinder.h"
+#include "clang/Lex/Lexer.h"
 #include "clang/Tooling/FixIt.h"
 #include "llvm/ADT/SmallVector.h"
 
diff --git a/clang-tools-extra/clang-tidy/readability/MagicNumbersCheck.h b/clang-tools-extra/clang-tidy/readability/MagicNumbersCheck.h
--- a/clang-tools-extra/clang-tidy/readability/MagicNumbersCheck.h
+++ b/clang-tools-extra/clang-tidy/readability/MagicNumbersCheck.h
@@ -10,9 +10,9 @@
 #define LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_READABILITY_MAGICNUMBERSCHECK_H
 
 #include "../ClangTidyCheck.h"
+#include "clang/Lex/Lexer.h"
 #include <llvm/ADT/APFloat.h>
 #include <llvm/ADT/SmallVector.h>
-#include <vector>
 
 namespace clang {
 namespace tidy {
diff --git a/clang-tools-extra/clang-tidy/readability/MakeMemberFunctionConstCheck.cpp b/clang-tools-extra/clang-tidy/readability/MakeMemberFunctionConstCheck.cpp
--- a/clang-tools-extra/clang-tidy/readability/MakeMemberFunctionConstCheck.cpp
+++ b/clang-tools-extra/clang-tidy/readability/MakeMemberFunctionConstCheck.cpp
@@ -11,6 +11,7 @@
 #include "clang/AST/ParentMapContext.h"
 #include "clang/AST/RecursiveASTVisitor.h"
 #include "clang/ASTMatchers/ASTMatchFinder.h"
+#include "clang/Lex/Lexer.h"
 
 using namespace clang::ast_matchers;
 
diff --git a/clang-tools-extra/clang-tidy/readability/RedundantPreprocessorCheck.cpp b/clang-tools-extra/clang-tidy/readability/RedundantPreprocessorCheck.cpp
--- a/clang-tools-extra/clang-tidy/readability/RedundantPreprocessorCheck.cpp
+++ b/clang-tools-extra/clang-tidy/readability/RedundantPreprocessorCheck.cpp
@@ -8,6 +8,9 @@
 
 #include "RedundantPreprocessorCheck.h"
 #include "clang/Frontend/CompilerInstance.h"
+#include "clang/Lex/Lexer.h"
+#include "clang/Lex/PPCallbacks.h"
+#include "clang/Lex/Preprocessor.h"
 
 namespace clang {
 namespace tidy {
diff --git a/clang-tools-extra/clang-tidy/readability/UppercaseLiteralSuffixCheck.cpp b/clang-tools-extra/clang-tidy/readability/UppercaseLiteralSuffixCheck.cpp
--- a/clang-tools-extra/clang-tidy/readability/UppercaseLiteralSuffixCheck.cpp
+++ b/clang-tools-extra/clang-tidy/readability/UppercaseLiteralSuffixCheck.cpp
@@ -8,9 +8,9 @@
 
 #include "UppercaseLiteralSuffixCheck.h"
 #include "../utils/ASTUtils.h"
-#include "../utils/OptionsUtils.h"
 #include "clang/AST/ASTContext.h"
 #include "clang/ASTMatchers/ASTMatchFinder.h"
+#include "clang/Lex/Lexer.h"
 #include "llvm/ADT/Optional.h"
 #include "llvm/ADT/SmallString.h"
 
diff --git a/clang-tools-extra/clang-tidy/readability/UseAnyOfAllOfCheck.h b/clang-tools-extra/clang-tidy/readability/UseAnyOfAllOfCheck.h
--- a/clang-tools-extra/clang-tidy/readability/UseAnyOfAllOfCheck.h
+++ b/clang-tools-extra/clang-tidy/readability/UseAnyOfAllOfCheck.h
@@ -10,7 +10,7 @@
 #ifndef LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_READABILITY_USEALGORITHMCHECK_H
 #define LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_READABILITY_USEALGORITHMCHECK_H
 
-#include "../ClangTidy.h"
+#include "../ClangTidyCheck.h"
 #include "../utils/IncludeInserter.h"
 
 namespace clang {
diff --git a/clang-tools-extra/clang-tidy/tool/ClangTidyMain.cpp b/clang-tools-extra/clang-tidy/tool/ClangTidyMain.cpp
--- a/clang-tools-extra/clang-tidy/tool/ClangTidyMain.cpp
+++ b/clang-tools-extra/clang-tidy/tool/ClangTidyMain.cpp
@@ -25,8 +25,6 @@
 #include "llvm/Support/TargetSelect.h"
 #include "llvm/Support/WithColor.h"
 
-using namespace clang::ast_matchers;
-using namespace clang::driver;
 using namespace clang::tooling;
 using namespace llvm;
 
diff --git a/clang-tools-extra/clang-tidy/utils/ExprSequence.cpp b/clang-tools-extra/clang-tidy/utils/ExprSequence.cpp
--- a/clang-tools-extra/clang-tidy/utils/ExprSequence.cpp
+++ b/clang-tools-extra/clang-tidy/utils/ExprSequence.cpp
@@ -7,6 +7,7 @@
 //===----------------------------------------------------------------------===//
 
 #include "ExprSequence.h"
+#include "clang/AST/ParentMapContext.h"
 
 namespace clang {
 namespace tidy {
diff --git a/clang-tools-extra/clang-tidy/utils/HeaderGuard.h b/clang-tools-extra/clang-tidy/utils/HeaderGuard.h
--- a/clang-tools-extra/clang-tidy/utils/HeaderGuard.h
+++ b/clang-tools-extra/clang-tidy/utils/HeaderGuard.h
@@ -9,7 +9,7 @@
 #ifndef LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_UTILS_HEADERGUARD_H
 #define LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_UTILS_HEADERGUARD_H
 
-#include "../ClangTidy.h"
+#include "../ClangTidyCheck.h"
 #include "../utils/FileExtensionsUtils.h"
 
 namespace clang {
diff --git a/clang-tools-extra/clang-tidy/utils/IncludeSorter.cpp b/clang-tools-extra/clang-tidy/utils/IncludeSorter.cpp
--- a/clang-tools-extra/clang-tidy/utils/IncludeSorter.cpp
+++ b/clang-tools-extra/clang-tidy/utils/IncludeSorter.cpp
@@ -7,6 +7,7 @@
 //===----------------------------------------------------------------------===//
 
 #include "IncludeSorter.h"
+#include "clang/Basic/SourceManager.h"
 #include "clang/Lex/Lexer.h"
 
 namespace clang {
diff --git a/clang-tools-extra/clang-tidy/utils/RenamerClangTidyCheck.h b/clang-tools-extra/clang-tidy/utils/RenamerClangTidyCheck.h
--- a/clang-tools-extra/clang-tidy/utils/RenamerClangTidyCheck.h
+++ b/clang-tools-extra/clang-tidy/utils/RenamerClangTidyCheck.h
@@ -12,6 +12,7 @@
 #include "../ClangTidyCheck.h"
 #include "llvm/ADT/DenseMap.h"
 #include "llvm/ADT/DenseSet.h"
+#include "llvm/ADT/FunctionExtras.h"
 #include "llvm/ADT/Optional.h"
 #include <string>
 #include <utility>
diff --git a/clang-tools-extra/clang-tidy/utils/TransformerClangTidyCheck.h b/clang-tools-extra/clang-tidy/utils/TransformerClangTidyCheck.h
--- a/clang-tools-extra/clang-tidy/utils/TransformerClangTidyCheck.h
+++ b/clang-tools-extra/clang-tidy/utils/TransformerClangTidyCheck.h
@@ -9,14 +9,11 @@
 #ifndef LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_TRANSFORMER_CLANG_TIDY_CHECK_H
 #define LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_TRANSFORMER_CLANG_TIDY_CHECK_H
 
-#include "../ClangTidy.h"
+#include "../ClangTidyCheck.h"
 #include "IncludeInserter.h"
 #include "IncludeSorter.h"
 #include "clang/ASTMatchers/ASTMatchFinder.h"
-#include "clang/Frontend/CompilerInstance.h"
 #include "clang/Tooling/Transformer/Transformer.h"
-#include <deque>
-#include <vector>
 
 namespace clang {
 namespace tidy {
diff --git a/clang-tools-extra/clang-tidy/utils/TransformerClangTidyCheck.cpp b/clang-tools-extra/clang-tidy/utils/TransformerClangTidyCheck.cpp
--- a/clang-tools-extra/clang-tidy/utils/TransformerClangTidyCheck.cpp
+++ b/clang-tools-extra/clang-tidy/utils/TransformerClangTidyCheck.cpp
@@ -7,6 +7,7 @@
 //===----------------------------------------------------------------------===//
 
 #include "TransformerClangTidyCheck.h"
+#include "clang/Lex/Preprocessor.h"
 #include "llvm/ADT/STLExtras.h"
 
 namespace clang {
diff --git a/clang-tools-extra/clangd/ParsedAST.cpp b/clang-tools-extra/clangd/ParsedAST.cpp
--- a/clang-tools-extra/clangd/ParsedAST.cpp
+++ b/clang-tools-extra/clangd/ParsedAST.cpp
@@ -7,6 +7,7 @@
 //===----------------------------------------------------------------------===//
 
 #include "ParsedAST.h"
+#include "../clang-tidy/ClangTidyCheck.h"
 #include "../clang-tidy/ClangTidyDiagnosticConsumer.h"
 #include "../clang-tidy/ClangTidyModuleRegistry.h"
 #include "AST.h"
diff --git a/clang-tools-extra/clangd/unittests/ParsedASTTests.cpp b/clang-tools-extra/clangd/unittests/ParsedASTTests.cpp
--- a/clang-tools-extra/clangd/unittests/ParsedASTTests.cpp
+++ b/clang-tools-extra/clangd/unittests/ParsedASTTests.cpp
@@ -11,6 +11,7 @@
 //
 //===----------------------------------------------------------------------===//
 
+#include "../../clang-tidy/ClangTidyCheck.h"
 #include "../../clang-tidy/ClangTidyModule.h"
 #include "../../clang-tidy/ClangTidyModuleRegistry.h"
 #include "AST.h"
diff --git a/clang-tools-extra/unittests/clang-tidy/ClangTidyTest.h b/clang-tools-extra/unittests/clang-tidy/ClangTidyTest.h
--- a/clang-tools-extra/unittests/clang-tidy/ClangTidyTest.h
+++ b/clang-tools-extra/unittests/clang-tidy/ClangTidyTest.h
@@ -10,6 +10,7 @@
 #define LLVM_CLANG_TOOLS_EXTRA_UNITTESTS_CLANG_TIDY_CLANGTIDYTEST_H
 
 #include "ClangTidy.h"
+#include "ClangTidyCheck.h"
 #include "ClangTidyDiagnosticConsumer.h"
 #include "clang/ASTMatchers/ASTMatchFinder.h"
 #include "clang/Frontend/CompilerInstance.h"