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diff --git a/tools/libclang/CIndexer.h b/tools/libclang/CIndexer.h
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+//===- CIndexer.h - Clang-C Source Indexing Library -----------------------===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// This file defines CIndexer, a subclass of Indexer that provides extra
+// functionality needed by the CIndex library.
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_CLANG_CINDEXER_H
+#define LLVM_CLANG_CINDEXER_H
+
+#include "clang-c/Index.h"
+#include "llvm/ADT/StringRef.h"
+#include "llvm/System/Path.h"
+#include <vector>
+
+namespace clang {
+namespace cxstring {
+  CXString createCXString(const char *String, bool DupString = false);
+  CXString createCXString(llvm::StringRef String, bool DupString = true);  
+}
+}
+
+class CIndexer {
+  bool UseExternalASTGeneration;
+  bool OnlyLocalDecls;
+  bool DisplayDiagnostics;
+
+  llvm::sys::Path ClangPath;
+  
+public:
+ CIndexer() 
+   : UseExternalASTGeneration(false), OnlyLocalDecls(false),
+     DisplayDiagnostics(false) { }
+  
+  /// \brief Whether we only want to see "local" declarations (that did not
+  /// come from a previous precompiled header). If false, we want to see all
+  /// declarations.
+  bool getOnlyLocalDecls() const { return OnlyLocalDecls; }
+  void setOnlyLocalDecls(bool Local = true) { OnlyLocalDecls = Local; }
+  
+  bool getDisplayDiagnostics() const { return DisplayDiagnostics; }
+  void setDisplayDiagnostics(bool Display = true) {
+    DisplayDiagnostics = Display;
+  }
+
+  bool getUseExternalASTGeneration() const { return UseExternalASTGeneration; }
+  void setUseExternalASTGeneration(bool Value) {
+    UseExternalASTGeneration = Value;
+  }
+  
+  /// \brief Get the path of the clang binary.
+  const llvm::sys::Path& getClangPath();
+  
+  /// \brief Get the path of the clang resource files.
+  std::string getClangResourcesPath();
+};
+
+namespace clang {
+  /**
+   * \brief Given a set of "unsaved" files, create temporary files and 
+   * construct the clang -cc1 argument list needed to perform the remapping.
+   *
+   * \returns true if an error occurred.
+   */
+  bool RemapFiles(unsigned num_unsaved_files,
+                  struct CXUnsavedFile *unsaved_files,
+                  std::vector<std::string> &RemapArgs,
+                  std::vector<llvm::sys::Path> &TemporaryFiles);
+}
+
+#endif