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diff --git a/clang-r344140b/include/clang/Index/IndexDataConsumer.h b/clang-r344140b/include/clang/Index/IndexDataConsumer.h
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+//===--- IndexDataConsumer.h - Abstract index data consumer -----*- 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_INDEX_INDEXDATACONSUMER_H
+#define LLVM_CLANG_INDEX_INDEXDATACONSUMER_H
+
+#include "clang/Index/IndexSymbol.h"
+#include "clang/Lex/Preprocessor.h"
+
+namespace clang {
+  class ASTContext;
+  class DeclContext;
+  class Expr;
+  class FileID;
+  class IdentifierInfo;
+  class ImportDecl;
+  class MacroInfo;
+
+namespace index {
+
+class IndexDataConsumer {
+public:
+  struct ASTNodeInfo {
+    const Expr *OrigE;
+    const Decl *OrigD;
+    const Decl *Parent;
+    const DeclContext *ContainerDC;
+  };
+
+  virtual ~IndexDataConsumer() {}
+
+  virtual void initialize(ASTContext &Ctx) {}
+
+  virtual void setPreprocessor(std::shared_ptr<Preprocessor> PP) {}
+
+  /// \returns true to continue indexing, or false to abort.
+  virtual bool handleDeclOccurence(const Decl *D, SymbolRoleSet Roles,
+                                   ArrayRef<SymbolRelation> Relations,
+                                   SourceLocation Loc, ASTNodeInfo ASTNode);
+
+  /// \returns true to continue indexing, or false to abort.
+  virtual bool handleMacroOccurence(const IdentifierInfo *Name,
+                                    const MacroInfo *MI, SymbolRoleSet Roles,
+                                    SourceLocation Loc);
+
+  /// \returns true to continue indexing, or false to abort.
+  ///
+  /// This will be called for each module reference in an import decl.
+  /// For "@import MyMod.SubMod", there will be a call for 'MyMod' with the
+  /// 'reference' role, and a call for 'SubMod' with the 'declaration' role.
+  virtual bool handleModuleOccurence(const ImportDecl *ImportD,
+                                     const Module *Mod,
+                                     SymbolRoleSet Roles, SourceLocation Loc);
+
+  virtual void finish() {}
+};
+
+} // namespace index
+} // namespace clang
+
+#endif