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diff --git a/third_party/protobuf/3.4.0/src/google/protobuf/compiler/cpp/cpp_file.h b/third_party/protobuf/3.4.0/src/google/protobuf/compiler/cpp/cpp_file.h
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@@ -0,0 +1,179 @@
+// Protocol Buffers - Google's data interchange format
+// Copyright 2008 Google Inc.  All rights reserved.
+// https://developers.google.com/protocol-buffers/
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+// Author: kenton@google.com (Kenton Varda)
+//  Based on original Protocol Buffers design by
+//  Sanjay Ghemawat, Jeff Dean, and others.
+
+#ifndef GOOGLE_PROTOBUF_COMPILER_CPP_FILE_H__
+#define GOOGLE_PROTOBUF_COMPILER_CPP_FILE_H__
+
+#include <memory>
+#ifndef _SHARED_PTR_H
+#include <google/protobuf/stubs/shared_ptr.h>
+#endif
+#include <string>
+#include <vector>
+#include <google/protobuf/stubs/common.h>
+#include <google/protobuf/compiler/cpp/cpp_field.h>
+#include <google/protobuf/compiler/cpp/cpp_helpers.h>
+#include <google/protobuf/compiler/cpp/cpp_options.h>
+
+namespace google {
+namespace protobuf {
+  class FileDescriptor;        // descriptor.h
+  namespace io {
+    class Printer;             // printer.h
+  }
+}
+
+namespace protobuf {
+namespace compiler {
+namespace cpp {
+
+class EnumGenerator;           // enum.h
+class MessageGenerator;        // message.h
+class ServiceGenerator;        // service.h
+class ExtensionGenerator;      // extension.h
+
+class FileGenerator {
+ public:
+  // See generator.cc for the meaning of dllexport_decl.
+  FileGenerator(const FileDescriptor* file, const Options& options);
+  ~FileGenerator();
+
+  // Shared code between the two header generators below.
+  void GenerateHeader(io::Printer* printer);
+
+  // info_path, if non-empty, should be the path (relative to printer's output)
+  // to the metadata file describing this proto header.
+  void GenerateProtoHeader(io::Printer* printer,
+                           const string& info_path);
+  // info_path, if non-empty, should be the path (relative to printer's output)
+  // to the metadata file describing this PB header.
+  void GeneratePBHeader(io::Printer* printer,
+                        const string& info_path);
+  void GenerateSource(io::Printer* printer);
+
+ private:
+  // Internal type used by GenerateForwardDeclarations (defined in file.cc).
+  class ForwardDeclarations;
+
+  // Generate the BuildDescriptors() procedure, which builds all descriptors
+  // for types defined in the file.
+  void GenerateBuildDescriptors(io::Printer* printer);
+
+  void GenerateNamespaceOpeners(io::Printer* printer);
+  void GenerateNamespaceClosers(io::Printer* printer);
+
+  // For other imports, generates their forward-declarations.
+  void GenerateForwardDeclarations(io::Printer* printer);
+
+  // Internal helper used by GenerateForwardDeclarations: fills 'decls'
+  // with all necessary forward-declarations for this file and its
+  // transient depednencies.
+  void FillForwardDeclarations(ForwardDeclarations* decls);
+
+  // Generates top or bottom of a header file.
+  void GenerateTopHeaderGuard(io::Printer* printer,
+                              const string& filename_identifier);
+  void GenerateBottomHeaderGuard(io::Printer* printer,
+                                 const string& filename_identifier);
+
+  // Generates #include directives.
+  void GenerateLibraryIncludes(io::Printer* printer);
+  void GenerateDependencyIncludes(io::Printer* printer);
+
+  // Generate a pragma to pull in metadata using the given info_path (if
+  // non-empty). info_path should be relative to printer's output.
+  void GenerateMetadataPragma(io::Printer* printer, const string& info_path);
+
+  // Generates a couple of different pieces before definitions:
+  void GenerateGlobalStateFunctionDeclarations(io::Printer* printer);
+
+  // Generates types for classes.
+  void GenerateMessageDefinitions(io::Printer* printer);
+
+  void GenerateEnumDefinitions(io::Printer* printer);
+
+  // Generates generic service definitions.
+  void GenerateServiceDefinitions(io::Printer* printer);
+
+  // Generates extension identifiers.
+  void GenerateExtensionIdentifiers(io::Printer* printer);
+
+  // Generates inline function defintions.
+  void GenerateInlineFunctionDefinitions(io::Printer* printer);
+
+  void GenerateProto2NamespaceEnumSpecializations(io::Printer* printer);
+
+  // Sometimes the names we use in a .proto file happen to be defined as macros
+  // on some platforms (e.g., macro/minor used in plugin.proto are defined as
+  // macros in sys/types.h on FreeBSD and a few other platforms). To make the
+  // generated code compile on these platforms, we either have to undef the
+  // macro for these few platforms, or rename the field name for all platforms.
+  // Since these names are part of protobuf public API, renaming is generally
+  // a breaking change so we prefer the #undef approach.
+  void GenerateMacroUndefs(io::Printer* printer);
+
+  const FileDescriptor* file_;
+  const Options options_;
+
+  SCCAnalyzer scc_analyzer_;
+
+  // Contains the post-order walk of all the messages (and child messages) in
+  // this file. If you need a pre-order walk just reverse iterate.
+  std::vector<MessageGenerator*> message_generators_;
+  std::vector<EnumGenerator*> enum_generators_;
+  std::vector<ServiceGenerator*> service_generators_;
+  std::vector<ExtensionGenerator*> extension_generators_;
+
+  // These members are just for owning (and thus proper deleting). Some of the
+  // message_ and enum_generators above are owned by child messages.
+  google::protobuf::scoped_array<google::protobuf::scoped_ptr<MessageGenerator> >
+      message_generators_owner_;
+  google::protobuf::scoped_array<google::protobuf::scoped_ptr<EnumGenerator> > enum_generators_owner_;
+  google::protobuf::scoped_array<google::protobuf::scoped_ptr<ServiceGenerator> >
+      service_generators_owner_;
+  google::protobuf::scoped_array<google::protobuf::scoped_ptr<ExtensionGenerator> >
+      extension_generators_owner_;
+
+  // E.g. if the package is foo.bar, package_parts_ is {"foo", "bar"}.
+  std::vector<string> package_parts_;
+
+  GOOGLE_DISALLOW_EVIL_CONSTRUCTORS(FileGenerator);
+};
+
+}  // namespace cpp
+}  // namespace compiler
+}  // namespace protobuf
+
+}  // namespace google
+#endif  // GOOGLE_PROTOBUF_COMPILER_CPP_FILE_H__