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diff --git a/include/clang/AST/PrettyPrinter.h b/include/clang/AST/PrettyPrinter.h
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+//===--- PrettyPrinter.h - Classes for aiding with AST printing -*- C++ -*-===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+//  This file defines the PrinterHelper interface.
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_CLANG_AST_PRETTY_PRINTER_H
+#define LLVM_CLANG_AST_PRETTY_PRINTER_H
+
+#include "clang/Basic/LLVM.h"
+#include "clang/Basic/LangOptions.h"
+
+namespace clang {
+
+class LangOptions;
+class SourceManager;
+class Stmt;
+class TagDecl;
+
+class PrinterHelper {
+public:
+  virtual ~PrinterHelper();
+  virtual bool handledStmt(Stmt* E, raw_ostream& OS) = 0;
+};
+
+/// \brief Describes how types, statements, expressions, and
+/// declarations should be printed.
+struct PrintingPolicy {
+  /// \brief Create a default printing policy for C.
+  PrintingPolicy(const LangOptions &LO)
+    : LangOpts(LO), Indentation(2), SuppressSpecifiers(false),
+      SuppressTagKeyword(false), SuppressTag(false), SuppressScope(false),
+      SuppressUnwrittenScope(false), SuppressInitializers(false),
+      ConstantArraySizeAsWritten(false), AnonymousTagLocations(true),
+      SuppressStrongLifetime(false), SuppressLifetimeQualifiers(false),
+      Bool(LO.Bool), TerseOutput(false), PolishForDeclaration(false),
+      Half(LO.Half), MSWChar(LO.MicrosoftExt && !LO.WChar),
+      IncludeNewlines(true) { }
+
+  /// \brief What language we're printing.
+  LangOptions LangOpts;
+
+  /// \brief The number of spaces to use to indent each line.
+  unsigned Indentation : 8;
+
+  /// \brief Whether we should suppress printing of the actual specifiers for
+  /// the given type or declaration.
+  ///
+  /// This flag is only used when we are printing declarators beyond
+  /// the first declarator within a declaration group. For example, given:
+  ///
+  /// \code
+  /// const int *x, *y;
+  /// \endcode
+  ///
+  /// SuppressSpecifiers will be false when printing the
+  /// declaration for "x", so that we will print "int *x"; it will be
+  /// \c true when we print "y", so that we suppress printing the
+  /// "const int" type specifier and instead only print the "*y".
+  bool SuppressSpecifiers : 1;
+
+  /// \brief Whether type printing should skip printing the tag keyword.
+  ///
+  /// This is used when printing the inner type of elaborated types,
+  /// (as the tag keyword is part of the elaborated type):
+  ///
+  /// \code
+  /// struct Geometry::Point;
+  /// \endcode
+  bool SuppressTagKeyword : 1;
+
+  /// \brief Whether type printing should skip printing the actual tag type.
+  ///
+  /// This is used when the caller needs to print a tag definition in front
+  /// of the type, as in constructs like the following:
+  ///
+  /// \code
+  /// typedef struct { int x, y; } Point;
+  /// \endcode
+  bool SuppressTag : 1;
+
+  /// \brief Suppresses printing of scope specifiers.
+  bool SuppressScope : 1;
+
+  /// \brief Suppress printing parts of scope specifiers that don't need
+  /// to be written, e.g., for inline or anonymous namespaces.
+  bool SuppressUnwrittenScope : 1;
+  
+  /// \brief Suppress printing of variable initializers.
+  ///
+  /// This flag is used when printing the loop variable in a for-range
+  /// statement. For example, given:
+  ///
+  /// \code
+  /// for (auto x : coll)
+  /// \endcode
+  ///
+  /// SuppressInitializers will be true when printing "auto x", so that the
+  /// internal initializer constructed for x will not be printed.
+  bool SuppressInitializers : 1;
+
+  /// \brief Whether we should print the sizes of constant array expressions
+  /// as written in the sources.
+  ///
+  /// This flag is determines whether arrays types declared as
+  ///
+  /// \code
+  /// int a[4+10*10];
+  /// char a[] = "A string";
+  /// \endcode
+  ///
+  /// will be printed as written or as follows:
+  ///
+  /// \code
+  /// int a[104];
+  /// char a[9] = "A string";
+  /// \endcode
+  bool ConstantArraySizeAsWritten : 1;
+  
+  /// \brief When printing an anonymous tag name, also print the location of
+  /// that entity (e.g., "enum <anonymous at t.h:10:5>"). Otherwise, just 
+  /// prints "(anonymous)" for the name.
+  bool AnonymousTagLocations : 1;
+  
+  /// \brief When true, suppress printing of the __strong lifetime qualifier in
+  /// ARC.
+  unsigned SuppressStrongLifetime : 1;
+  
+  /// \brief When true, suppress printing of lifetime qualifier in
+  /// ARC.
+  unsigned SuppressLifetimeQualifiers : 1;
+  
+  /// \brief Whether we can use 'bool' rather than '_Bool', even if the language
+  /// doesn't actually have 'bool' (because, e.g., it is defined as a macro).
+  unsigned Bool : 1;
+
+  /// \brief Provide a 'terse' output.
+  ///
+  /// For example, in this mode we don't print function bodies, class members,
+  /// declarations inside namespaces etc.  Effectively, this should print
+  /// only the requested declaration.
+  unsigned TerseOutput : 1;
+  
+  /// \brief When true, do certain refinement needed for producing proper
+  /// declaration tag; such as, do not print attributes attached to the declaration.
+  ///
+  unsigned PolishForDeclaration : 1;
+
+  /// \brief When true, print the half-precision floating-point type as 'half'
+  /// instead of '__fp16'
+  unsigned Half : 1;
+
+  /// \brief When true, print the built-in wchar_t type as __wchar_t. For use in
+  /// Microsoft mode when wchar_t is not available.
+  unsigned MSWChar : 1;
+
+  /// \brief When true, include newlines after statements like "break", etc.
+  unsigned IncludeNewlines : 1;
+};
+
+} // end namespace clang
+
+#endif