Revert https://codereview.chromium.org/1291903002 (protobuf roll).

third_party/protobuf/src/google/protobuf/compiler/csharp/csharp_wrapper_field.cc

Index: third_party/protobuf/src/google/protobuf/compiler/csharp/csharp_wrapper_field.cc
diff --git a/third_party/protobuf/src/google/protobuf/compiler/csharp/csharp_wrapper_field.cc b/third_party/protobuf/src/google/protobuf/compiler/csharp/csharp_wrapper_field.cc
deleted file mode 100644
index 44f832bfcab3182fa1a55ba65f3b650512d81783..0000000000000000000000000000000000000000
--- a/third_party/protobuf/src/google/protobuf/compiler/csharp/csharp_wrapper_field.cc
+++ /dev/null
@@ -1,207 +0,0 @@
-// 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 <sstream>
-
-#include <google/protobuf/compiler/code_generator.h>
-#include <google/protobuf/compiler/plugin.h>
-#include <google/protobuf/descriptor.h>
-#include <google/protobuf/descriptor.pb.h>
-#include <google/protobuf/io/printer.h>
-#include <google/protobuf/io/zero_copy_stream.h>
-
-#include <google/protobuf/compiler/csharp/csharp_helpers.h>
-#include <google/protobuf/compiler/csharp/csharp_wrapper_field.h>
-
-namespace google {
-namespace protobuf {
-namespace compiler {
-namespace csharp {
-
-WrapperFieldGenerator::WrapperFieldGenerator(const FieldDescriptor* descriptor,
-                                       int fieldOrdinal)
-    : FieldGeneratorBase(descriptor, fieldOrdinal) {
-  variables_["has_property_check"] = name() + "_ != null";
-  variables_["has_not_property_check"] = name() + "_ == null";
-  const FieldDescriptor* wrapped_field = descriptor->message_type()->field(0);
-  is_value_type = wrapped_field->type() != FieldDescriptor::TYPE_STRING &&
-      wrapped_field->type() != FieldDescriptor::TYPE_BYTES;
-  if (is_value_type) {
-    variables_["nonnullable_type_name"] = type_name(wrapped_field);
-  }
-}
-
-WrapperFieldGenerator::~WrapperFieldGenerator() {
-}
-
-void WrapperFieldGenerator::GenerateMembers(io::Printer* printer) {
-  printer->Print(
-        variables_,
-        "private static readonly pb::FieldCodec<$type_name$> _single_$name$_codec = ");
-  GenerateCodecCode(printer);
-  printer->Print(
-    variables_,
-    ";\n"
-    "private $type_name$ $name$_;\n");
-  AddDeprecatedFlag(printer);
-  printer->Print(
-    variables_,
-    "$access_level$ $type_name$ $property_name$ {\n"
-    "  get { return $name$_; }\n"
-    "  set {\n"
-    "    $name$_ = value;\n"
-    "  }\n"
-    "}\n");
-}
-
-void WrapperFieldGenerator::GenerateMergingCode(io::Printer* printer) {
-  printer->Print(
-    variables_,
-    "if (other.$has_property_check$) {\n"
-    "  if ($has_not_property_check$ || other.$property_name$ != $default_value$) {\n"
-    "    $property_name$ = other.$property_name$;\n"
-    "  }\n"
-    "}\n");
-}
-
-void WrapperFieldGenerator::GenerateParsingCode(io::Printer* printer) {
-  printer->Print(
-    variables_,
-    "$type_name$ value = _single_$name$_codec.Read(input);\n"
-    "if ($has_not_property_check$ || value != $default_value$) {\n"
-    "  $property_name$ = value;\n"
-    "}\n");
-}
-
-void WrapperFieldGenerator::GenerateSerializationCode(io::Printer* printer) {
-  printer->Print(
-    variables_,
-    "if ($has_property_check$) {\n"
-    "  _single_$name$_codec.WriteTagAndValue(output, $property_name$);\n"
-    "}\n");
-}
-
-void WrapperFieldGenerator::GenerateSerializedSizeCode(io::Printer* printer) {
-  printer->Print(
-    variables_,
-    "if ($has_property_check$) {\n"
-    "  size += _single_$name$_codec.CalculateSizeWithTag($property_name$);\n"
-    "}\n");
-}
-
-void WrapperFieldGenerator::WriteHash(io::Printer* printer) {
-  printer->Print(
-    variables_,
-    "if ($has_property_check$) hash ^= $property_name$.GetHashCode();\n");
-}
-
-void WrapperFieldGenerator::WriteEquals(io::Printer* printer) {
-  printer->Print(
-    variables_,
-    "if ($property_name$ != other.$property_name$) return false;\n");
-}
-
-void WrapperFieldGenerator::WriteToString(io::Printer* printer) {
-  // TODO: Implement if we ever actually need it...
-}
-
-void WrapperFieldGenerator::GenerateCloningCode(io::Printer* printer) {
-  printer->Print(variables_,
-    "$property_name$ = other.$property_name$;\n");
-}
-
-void WrapperFieldGenerator::GenerateCodecCode(io::Printer* printer) {
-  if (is_value_type) {
-    printer->Print(
-      variables_,
-      "pb::FieldCodec.ForStructWrapper<$nonnullable_type_name$>($tag$)");
-  } else {
-    printer->Print(
-      variables_,
-      "pb::FieldCodec.ForClassWrapper<$type_name$>($tag$)");
-  }
-}
-
-WrapperOneofFieldGenerator::WrapperOneofFieldGenerator(const FieldDescriptor* descriptor,
-    int fieldOrdinal)
-    : WrapperFieldGenerator(descriptor, fieldOrdinal) {
-    SetCommonOneofFieldVariables(&variables_);
-}
-
-WrapperOneofFieldGenerator::~WrapperOneofFieldGenerator() {
-}
-
-void WrapperOneofFieldGenerator::GenerateMembers(io::Printer* printer) {
-  // Note: deliberately _oneof_$name$_codec, not _$oneof_name$_codec... we have one codec per field.
-  printer->Print(
-        variables_,
-        "private static readonly pb::FieldCodec<$type_name$> _oneof_$name$_codec = ");
-  GenerateCodecCode(printer);
-  printer->Print(";\n");
-  AddDeprecatedFlag(printer);
-  printer->Print(
-    variables_,
-    "$access_level$ $type_name$ $property_name$ {\n"
-    "  get { return $has_property_check$ ? ($type_name$) $oneof_name$_ : ($type_name$) null; }\n"
-    "  set {\n"
-    "    $oneof_name$_ = value;\n"
-    "    $oneof_name$Case_ = value == null ? $oneof_property_name$OneofCase.None : $oneof_property_name$OneofCase.$property_name$;\n"
-    "  }\n"
-    "}\n");
-}
-
-void WrapperOneofFieldGenerator::GenerateParsingCode(io::Printer* printer) {
-  printer->Print(
-    variables_,
-    "$property_name$ = _oneof_$name$_codec.Read(input);\n");
-}
-
-void WrapperOneofFieldGenerator::GenerateSerializationCode(io::Printer* printer) {
-  // TODO: I suspect this is wrong...
-  printer->Print(
-    variables_,
-    "if ($has_property_check$) {\n"
-    "  _oneof_$name$_codec.WriteTagAndValue(output, ($type_name$) $oneof_name$_);\n"
-    "}\n");
-}
-
-void WrapperOneofFieldGenerator::GenerateSerializedSizeCode(io::Printer* printer) {
-  // TODO: I suspect this is wrong...
-  printer->Print(
-    variables_,
-    "if ($has_property_check$) {\n"
-    "  size += _oneof_$name$_codec.CalculateSizeWithTag($property_name$);\n"
-    "}\n");
-}
-
-}  // namespace csharp
-}  // namespace compiler
-}  // namespace protobuf
-}  // namespace google