1 files changed, 44 insertions, 0 deletions
diff --git a/clang-tools-extra/clang-tidy/llvm/IncludeOrderCheck.cpp b/clang-tools-extra/clang-tidy/llvm/IncludeOrderCheck.cpp
new file mode 100644
index 00000000000..de4f650a33c
--- /dev/null
+++ b/clang-tools-extra/clang-tidy/llvm/IncludeOrderCheck.cpp
@@ -0,0 +1,44 @@
+//===--- IncludeOrderCheck.cpp - clang-tidy -------------------------------===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+#include "IncludeOrderCheck.h"
+#include "clang/Frontend/CompilerInstance.h"
+#include "clang/Lex/PPCallbacks.h"
+#include "clang/Lex/Preprocessor.h"
+
+namespace clang {
+namespace tidy {
+
+namespace {
+class IncludeOrderPPCallbacks : public PPCallbacks {
+public:
+  explicit IncludeOrderPPCallbacks(IncludeOrderCheck &Check) : Check(Check) {}
+
+  void InclusionDirective(SourceLocation HashLoc, const Token &IncludeTok,
+                          StringRef FileName, bool IsAngled,
+                          CharSourceRange FilenameRange, const FileEntry *File,
+                          StringRef SearchPath, StringRef RelativePath,
+                          const Module *Imported) override {
+    // FIXME: This is a dummy implementation to show how to get at preprocessor
+    // information. Implement a real include order check.
+    Check.diag(HashLoc, "This is an include");
+  }
+
+private:
+  IncludeOrderCheck &Check;
+};
+} // namespace
+
+void IncludeOrderCheck::registerPPCallbacks(CompilerInstance &Compiler) {
+  Compiler.getPreprocessor()
+      .addPPCallbacks(new IncludeOrderPPCallbacks(*this));
+}
+
+} // namespace tidy
+} // namespace clang