Update //third_party/protobuf to version 3.

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

+// 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/stubs/strutil.h>
+
+#include <google/protobuf/compiler/csharp/csharp_doc_comment.h>
+#include <google/protobuf/compiler/csharp/csharp_helpers.h>
+#include <google/protobuf/compiler/csharp/csharp_message_field.h>
+
+namespace google {
+namespace protobuf {
+namespace compiler {
+namespace csharp {
+
+MessageFieldGenerator::MessageFieldGenerator(const FieldDescriptor* descriptor,
+                                             int fieldOrdinal)
+    : FieldGeneratorBase(descriptor, fieldOrdinal) {
+  variables_["has_property_check"] = name() + "_ != null";
+  variables_["has_not_property_check"] = name() + "_ == null";
+}
+
+MessageFieldGenerator::~MessageFieldGenerator() {
+
+}
+
+void MessageFieldGenerator::GenerateMembers(io::Printer* printer) {
+  printer->Print(
+    variables_,
+    "private $type_name$ $name$_;\n");
+  WritePropertyDocComment(printer, descriptor_);
+  AddDeprecatedFlag(printer);
+  printer->Print(
+    variables_,
+    "$access_level$ $type_name$ $property_name$ {\n"
+    "  get { return $name$_; }\n"
+    "  set {\n"
+    "    $name$_ = value;\n"
+    "  }\n"
+    "}\n");
+}
+
+void MessageFieldGenerator::GenerateMergingCode(io::Printer* printer) {
+  printer->Print(
+    variables_,
+    "if (other.$has_property_check$) {\n"
+    "  if ($has_not_property_check$) {\n"
+    "    $name$_ = new $type_name$();\n"
+    "  }\n"
+    "  $property_name$.MergeFrom(other.$property_name$);\n"
+    "}\n");
+}
+
+void MessageFieldGenerator::GenerateParsingCode(io::Printer* printer) {
+  printer->Print(
+    variables_,
+    "if ($has_not_property_check$) {\n"
+    "  $name$_ = new $type_name$();\n"
+    "}\n"
+    // TODO(jonskeet): Do we really need merging behaviour like this?
+    "input.ReadMessage($name$_);\n"); // No need to support TYPE_GROUP...
+}
+
+void MessageFieldGenerator::GenerateSerializationCode(io::Printer* printer) {
+  printer->Print(
+    variables_,
+    "if ($has_property_check$) {\n"
+    "  output.WriteRawTag($tag_bytes$);\n"
+    "  output.WriteMessage($property_name$);\n"
+    "}\n");
+}
+
+void MessageFieldGenerator::GenerateSerializedSizeCode(io::Printer* printer) {
+  printer->Print(
+    variables_,
+    "if ($has_property_check$) {\n"
+    "  size += $tag_size$ + pb::CodedOutputStream.ComputeMessageSize($property_name$);\n"
+    "}\n");
+}
+
+void MessageFieldGenerator::WriteHash(io::Printer* printer) {
+  printer->Print(
+    variables_,
+    "if ($has_property_check$) hash ^= $property_name$.GetHashCode();\n");
+}
+void MessageFieldGenerator::WriteEquals(io::Printer* printer) {
+  printer->Print(
+    variables_,
+    "if (!object.Equals($property_name$, other.$property_name$)) return false;\n");
+}
+void MessageFieldGenerator::WriteToString(io::Printer* printer) {
+  variables_["field_name"] = GetFieldName(descriptor_);
+  printer->Print(
+    variables_,
+    "PrintField(\"$field_name$\", has$property_name$, $name$_, writer);\n");
+}
+
+void MessageFieldGenerator::GenerateCloningCode(io::Printer* printer) {
+  printer->Print(variables_,
+    "$property_name$ = other.$has_property_check$ ? other.$property_name$.Clone() : null;\n");
+}
+
+void MessageFieldGenerator::GenerateFreezingCode(io::Printer* printer) {
+}
+
+void MessageFieldGenerator::GenerateCodecCode(io::Printer* printer) {
+  printer->Print(
+    variables_,
+    "pb::FieldCodec.ForMessage($tag$, $type_name$.Parser)");
+}
+
+MessageOneofFieldGenerator::MessageOneofFieldGenerator(const FieldDescriptor* descriptor,
+                                                       int fieldOrdinal)
+    : MessageFieldGenerator(descriptor, fieldOrdinal) {
+  SetCommonOneofFieldVariables(&variables_);
+}
+
+MessageOneofFieldGenerator::~MessageOneofFieldGenerator() {
+
+}
+
+void MessageOneofFieldGenerator::GenerateMembers(io::Printer* printer) {
+  WritePropertyDocComment(printer, descriptor_);
+  AddDeprecatedFlag(printer);
+  printer->Print(
+    variables_,
+    "$access_level$ $type_name$ $property_name$ {\n"
+    "  get { return $has_property_check$ ? ($type_name$) $oneof_name$_ : 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 MessageOneofFieldGenerator::GenerateParsingCode(io::Printer* printer) {
+  // TODO(jonskeet): We may be able to do better than this
+  printer->Print(
+    variables_,
+    "$type_name$ subBuilder = new $type_name$();\n"
+    "if ($has_property_check$) {\n"
+    "  subBuilder.MergeFrom($property_name$);\n"
+    "}\n"
+    "input.ReadMessage(subBuilder);\n" // No support of TYPE_GROUP
+    "$property_name$ = subBuilder;\n");
+}
+
+void MessageOneofFieldGenerator::WriteToString(io::Printer* printer) {
+  printer->Print(
+    variables_,
+    "PrintField(\"$descriptor_name$\", $has_property_check$, $oneof_name$_, writer);\n");
+}
+
+void MessageOneofFieldGenerator::GenerateCloningCode(io::Printer* printer) {
+  printer->Print(variables_,
+    "$property_name$ = other.$property_name$.Clone();\n");
+}
+
+}  // namespace csharp
+}  // namespace compiler
+}  // namespace protobuf
+}  // namespace google