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diff --git a/src/google/protobuf/compiler/objectivec/objectivec_generator.cc b/src/google/protobuf/compiler/objectivec/objectivec_generator.cc
new file mode 100644
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+++ b/src/google/protobuf/compiler/objectivec/objectivec_generator.cc
@@ -0,0 +1,95 @@
+// 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.
+
+#include <iostream>
+#include <google/protobuf/compiler/objectivec/objectivec_generator.h>
+#include <google/protobuf/compiler/objectivec/objectivec_file.h>
+#include <google/protobuf/compiler/objectivec/objectivec_helpers.h>
+#include <google/protobuf/io/printer.h>
+#include <google/protobuf/io/zero_copy_stream.h>
+#include <google/protobuf/descriptor.pb.h>
+#include <google/protobuf/stubs/strutil.h>
+
+namespace google {
+namespace protobuf {
+namespace compiler {
+namespace objectivec {
+
+ObjectiveCGenerator::ObjectiveCGenerator() {}
+
+ObjectiveCGenerator::~ObjectiveCGenerator() {}
+
+bool ObjectiveCGenerator::Generate(const FileDescriptor* file,
+                                   const string& parameter,
+                                   OutputDirectory* output_directory,
+                                   string* error) const {
+  // ObjC doesn't have any options at the moment, error if passed one.
+  vector<pair<string, string> > options;
+  ParseGeneratorParameter(parameter, &options);
+  for (int i = 0; i < options.size(); i++) {
+    *error = "error:: Unknown generator option: " + options[i].first;
+    return false;
+  }
+
+  if (!InitializeClassWhitelist(error)) {
+    return false;
+  }
+
+  FileGenerator file_generator(file);
+
+  string filepath = FilePath(file);
+
+  // Generate header.
+  {
+    scoped_ptr<io::ZeroCopyOutputStream> output(
+        output_directory->Open(filepath + ".pbobjc.h"));
+    io::Printer printer(output.get(), '$');
+    file_generator.GenerateHeader(&printer);
+  }
+
+  // Generate m file.
+  {
+    scoped_ptr<io::ZeroCopyOutputStream> output(
+        output_directory->Open(filepath + ".pbobjc.m"));
+    io::Printer printer(output.get(), '$');
+    file_generator.GenerateSource(&printer);
+  }
+
+  if (!WriteClassList(error)) {
+    return false;
+  }
+
+  return true;
+}
+
+}  // namespace objectivec
+}  // namespace compiler
+}  // namespace protobuf
+}  // namespace google