Pull new version of protobuf sources.

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

Index: third_party/protobuf/src/google/protobuf/compiler/csharp/csharp_message.cc
diff --git a/third_party/protobuf/src/google/protobuf/compiler/csharp/csharp_message.cc b/third_party/protobuf/src/google/protobuf/compiler/csharp/csharp_message.cc
new file mode 100644
index 0000000000000000000000000000000000000000..a71a7909fc69a49ab35fb54814cd97beb6314286
--- /dev/null
+++ b/third_party/protobuf/src/google/protobuf/compiler/csharp/csharp_message.cc
@@ -0,0 +1,482 @@
+// 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 <algorithm>
+#include <map>
+
+#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/wire_format.h>
+#include <google/protobuf/wire_format_lite.h>
+
+#include <google/protobuf/compiler/csharp/csharp_enum.h>
+#include <google/protobuf/compiler/csharp/csharp_field_base.h>
+#include <google/protobuf/compiler/csharp/csharp_helpers.h>
+#include <google/protobuf/compiler/csharp/csharp_message.h>
+#include <google/protobuf/compiler/csharp/csharp_names.h>
+
+using google::protobuf::internal::scoped_ptr;
+
+namespace google {
+namespace protobuf {
+namespace compiler {
+namespace csharp {
+
+bool CompareFieldNumbers(const FieldDescriptor* d1, const FieldDescriptor* d2) {
+  return d1->number() < d2->number();
+}
+
+MessageGenerator::MessageGenerator(const Descriptor* descriptor)
+    : SourceGeneratorBase(descriptor->file()),
+      descriptor_(descriptor) {
+
+  // sorted field names
+  for (int i = 0; i < descriptor_->field_count(); i++) {
+    field_names_.push_back(descriptor_->field(i)->name());
+  }
+  std::sort(field_names_.begin(), field_names_.end());
+
+  // fields by number
+  for (int i = 0; i < descriptor_->field_count(); i++) {
+    fields_by_number_.push_back(descriptor_->field(i));
+  }
+  std::sort(fields_by_number_.begin(), fields_by_number_.end(),
+            CompareFieldNumbers);
+}
+
+MessageGenerator::~MessageGenerator() {
+}
+
+std::string MessageGenerator::class_name() {
+  return descriptor_->name();
+}
+
+std::string MessageGenerator::full_class_name() {
+  return GetClassName(descriptor_);
+}
+
+const std::vector<std::string>& MessageGenerator::field_names() {
+  return field_names_;
+}
+
+const std::vector<const FieldDescriptor*>& MessageGenerator::fields_by_number() {
+  return fields_by_number_;
+}
+
+void MessageGenerator::Generate(io::Printer* printer) {
+  map<string, string> vars;
+  vars["class_name"] = class_name();
+  vars["access_level"] = class_access_level();
+
+  printer->Print(
+    "[global::System.Diagnostics.DebuggerNonUserCodeAttribute()]\n");
+  WriteGeneratedCodeAttributes(printer);
+  printer->Print(
+    vars,
+    "$access_level$ sealed partial class $class_name$ : pb::IMessage<$class_name$> {\n");
+  printer->Indent();
+
+  // All static fields and properties
+  printer->Print(
+      vars,
+      "private static readonly pb::MessageParser<$class_name$> _parser = new pb::MessageParser<$class_name$>(() => new $class_name$());\n"
+      "public static pb::MessageParser<$class_name$> Parser { get { return _parser; } }\n\n");
+
+  // Access the message descriptor via the relevant file descriptor or containing message descriptor.
+  if (!descriptor_->containing_type()) {
+    vars["descriptor_accessor"] = GetUmbrellaClassName(descriptor_->file())
+        + ".Descriptor.MessageTypes[" + SimpleItoa(descriptor_->index()) + "]";
+  } else {
+    vars["descriptor_accessor"] = GetClassName(descriptor_->containing_type())
+        + ".Descriptor.NestedTypes[" + SimpleItoa(descriptor_->index()) + "]";
+  }
+
+  printer->Print(
+    vars,
+    "public static pbr::MessageDescriptor Descriptor {\n"
+    "  get { return $descriptor_accessor$; }\n"
+    "}\n"
+    "\n"
+    "pbr::MessageDescriptor pb::IMessage.Descriptor {\n"
+    "  get { return Descriptor; }\n"
+    "}\n"
+    "\n");
+
+  // Parameterless constructor and partial OnConstruction method.
+  printer->Print(
+    vars,
+    "public $class_name$() {\n"
+    "  OnConstruction();\n"
+    "}\n\n"
+    "partial void OnConstruction();\n\n");
+
+  GenerateCloningCode(printer);
+  GenerateFreezingCode(printer);
+
+  // Fields/properties
+  for (int i = 0; i < descriptor_->field_count(); i++) {
+    const FieldDescriptor* fieldDescriptor = descriptor_->field(i);
+
+    // Rats: we lose the debug comment here :(
+    printer->Print(
+      "public const int $field_constant_name$ = $index$;\n",
+      "field_constant_name", GetFieldConstantName(fieldDescriptor),
+      "index", SimpleItoa(fieldDescriptor->number()));
+    scoped_ptr<FieldGeneratorBase> generator(
+        CreateFieldGeneratorInternal(fieldDescriptor));
+    generator->GenerateMembers(printer);
+    printer->Print("\n");
+  }
+
+  // oneof properties
+  for (int i = 0; i < descriptor_->oneof_decl_count(); i++) {
+    vars["name"] = UnderscoresToCamelCase(descriptor_->oneof_decl(i)->name(), false);
+    vars["property_name"] = UnderscoresToCamelCase(descriptor_->oneof_decl(i)->name(), true);
+    vars["original_name"] = descriptor_->oneof_decl(i)->name();
+    printer->Print(
+      vars,
+      "private object $name$_;\n"
+      "public enum $property_name$OneofCase {\n");
+    printer->Indent();
+    printer->Print("None = 0,\n");
+    for (int j = 0; j < descriptor_->oneof_decl(i)->field_count(); j++) {
+      const FieldDescriptor* field = descriptor_->oneof_decl(i)->field(j);
+      printer->Print("$field_property_name$ = $index$,\n",
+                     "field_property_name", GetPropertyName(field),
+                     "index", SimpleItoa(field->number()));
+    }
+    printer->Outdent();
+    printer->Print("}\n");
+    printer->Print(
+      vars,
+      "private $property_name$OneofCase $name$Case_ = $property_name$OneofCase.None;\n"
+      "public $property_name$OneofCase $property_name$Case {\n"
+      "  get { return $name$Case_; }\n"
+      "}\n\n"
+      "public void Clear$property_name$() {\n"
+      "  $name$Case_ = $property_name$OneofCase.None;\n"
+      "  $name$_ = null;\n"
+      "}\n\n");
+  }
+
+  // Standard methods
+  GenerateFrameworkMethods(printer);
+  GenerateMessageSerializationMethods(printer);
+  GenerateMergingMethods(printer);
+
+  // Nested messages and enums
+  if (HasNestedGeneratedTypes()) {
+    printer->Print("#region Nested types\n"
+		   "[global::System.Diagnostics.DebuggerNonUserCodeAttribute()]\n");
+    WriteGeneratedCodeAttributes(printer);
+    printer->Print("public static partial class Types {\n");
+    printer->Indent();
+    for (int i = 0; i < descriptor_->enum_type_count(); i++) {
+      EnumGenerator enumGenerator(descriptor_->enum_type(i));
+      enumGenerator.Generate(printer);
+    }
+    for (int i = 0; i < descriptor_->nested_type_count(); i++) {
+      // Don't generate nested types for maps...
+      if (!IsMapEntryMessage(descriptor_->nested_type(i))) {
+        MessageGenerator messageGenerator(descriptor_->nested_type(i));
+        messageGenerator.Generate(printer);
+      }
+    }
+    printer->Outdent();
+    printer->Print("}\n"
+                   "#endregion\n"
+                   "\n");
+  }
+
+  printer->Outdent();
+  printer->Print("}\n");
+  printer->Print("\n");
+}
+
+// Helper to work out whether we need to generate a class to hold nested types/enums.
+// Only tricky because we don't want to generate map entry types.
+bool MessageGenerator::HasNestedGeneratedTypes()
+{
+  if (descriptor_->enum_type_count() > 0) {
+    return true;
+  }
+  for (int i = 0; i < descriptor_->nested_type_count(); i++) {
+    if (!IsMapEntryMessage(descriptor_->nested_type(i))) {
+      return true;
+    }
+  }
+  return false;
+}
+
+void MessageGenerator::GenerateCloningCode(io::Printer* printer) {
+  map<string, string> vars;
+  vars["class_name"] = class_name();
+    printer->Print(
+    vars,
+    "public $class_name$($class_name$ other) : this() {\n");
+  printer->Indent();
+  // Clone non-oneof fields first
+  for (int i = 0; i < descriptor_->field_count(); i++) {
+    if (!descriptor_->field(i)->containing_oneof()) {
+      scoped_ptr<FieldGeneratorBase> generator(
+        CreateFieldGeneratorInternal(descriptor_->field(i)));
+      generator->GenerateCloningCode(printer);
+    }
+  }
+  // Clone just the right field for each oneof
+  for (int i = 0; i < descriptor_->oneof_decl_count(); ++i) {
+    vars["name"] = UnderscoresToCamelCase(descriptor_->oneof_decl(i)->name(), false);
+    vars["property_name"] = UnderscoresToCamelCase(descriptor_->oneof_decl(i)->name(), true);
+    printer->Print(vars, "switch (other.$property_name$Case) {\n");
+    printer->Indent();
+    for (int j = 0; j < descriptor_->oneof_decl(i)->field_count(); j++) {
+      const FieldDescriptor* field = descriptor_->oneof_decl(i)->field(j);
+      scoped_ptr<FieldGeneratorBase> generator(CreateFieldGeneratorInternal(field));
+      vars["field_property_name"] = GetPropertyName(field);
+      printer->Print(
+          vars,
+          "case $property_name$OneofCase.$field_property_name$:\n");
+      printer->Indent();
+      generator->GenerateCloningCode(printer);
+      printer->Print("break;\n");
+      printer->Outdent();
+    }
+    printer->Outdent();
+    printer->Print("}\n\n");
+  }
+
+  printer->Outdent();
+  printer->Print("}\n\n");
+
+  printer->Print(
+    vars,
+    "public $class_name$ Clone() {\n"
+    "  return new $class_name$(this);\n"
+    "}\n\n");
+}
+
+void MessageGenerator::GenerateFreezingCode(io::Printer* printer) {
+}
+
+void MessageGenerator::GenerateFrameworkMethods(io::Printer* printer) {
+    map<string, string> vars;
+    vars["class_name"] = class_name();
+
+    // Equality
+    printer->Print(
+        vars,
+        "public override bool Equals(object other) {\n"
+        "  return Equals(other as $class_name$);\n"
+        "}\n\n"
+        "public bool Equals($class_name$ other) {\n"
+        "  if (ReferenceEquals(other, null)) {\n"
+        "    return false;\n"
+        "  }\n"
+        "  if (ReferenceEquals(other, this)) {\n"
+        "    return true;\n"
+        "  }\n");
+    printer->Indent();
+    for (int i = 0; i < descriptor_->field_count(); i++) {
+        scoped_ptr<FieldGeneratorBase> generator(
+            CreateFieldGeneratorInternal(descriptor_->field(i)));
+        generator->WriteEquals(printer);
+    }
+    printer->Outdent();
+    printer->Print(
+        "  return true;\n"
+        "}\n\n");
+
+    // GetHashCode
+    // Start with a non-zero value to easily distinguish between null and "empty" messages.
+    printer->Print(
+        "public override int GetHashCode() {\n"
+        "  int hash = 1;\n");
+    printer->Indent();
+    for (int i = 0; i < descriptor_->field_count(); i++) {
+        scoped_ptr<FieldGeneratorBase> generator(
+            CreateFieldGeneratorInternal(descriptor_->field(i)));
+        generator->WriteHash(printer);
+    }
+    printer->Print("return hash;\n");
+    printer->Outdent();
+    printer->Print("}\n\n");
+
+    printer->Print(
+        "public override string ToString() {\n"
+        "  return pb::JsonFormatter.Default.Format(this);\n"
+        "}\n\n");
+}
+
+void MessageGenerator::GenerateMessageSerializationMethods(io::Printer* printer) {
+  printer->Print(
+      "public void WriteTo(pb::CodedOutputStream output) {\n");
+  printer->Indent();
+
+  // Serialize all the fields
+  for (int i = 0; i < fields_by_number().size(); i++) {
+    scoped_ptr<FieldGeneratorBase> generator(
+      CreateFieldGeneratorInternal(fields_by_number()[i]));
+    generator->GenerateSerializationCode(printer);
+  }
+
+  // TODO(jonskeet): Memoize size of frozen messages?
+  printer->Outdent();
+  printer->Print(
+    "}\n"
+    "\n"
+    "public int CalculateSize() {\n");
+  printer->Indent();
+  printer->Print("int size = 0;\n");
+  for (int i = 0; i < descriptor_->field_count(); i++) {
+    scoped_ptr<FieldGeneratorBase> generator(
+        CreateFieldGeneratorInternal(descriptor_->field(i)));
+    generator->GenerateSerializedSizeCode(printer);
+  }
+  printer->Print("return size;\n");
+  printer->Outdent();
+  printer->Print("}\n\n");
+}
+
+void MessageGenerator::GenerateMergingMethods(io::Printer* printer) {
+  // Note:  These are separate from GenerateMessageSerializationMethods()
+  //   because they need to be generated even for messages that are optimized
+  //   for code size.
+  map<string, string> vars;
+  vars["class_name"] = class_name();
+
+  printer->Print(
+    vars,
+    "public void MergeFrom($class_name$ other) {\n");
+  printer->Indent();
+  printer->Print(
+    "if (other == null) {\n"
+    "  return;\n"
+    "}\n");
+  // Merge non-oneof fields
+  for (int i = 0; i < descriptor_->field_count(); i++) {
+    if (!descriptor_->field(i)->containing_oneof()) {      
+      scoped_ptr<FieldGeneratorBase> generator(
+          CreateFieldGeneratorInternal(descriptor_->field(i)));
+      generator->GenerateMergingCode(printer);
+    }
+  }
+  // Merge oneof fields
+  for (int i = 0; i < descriptor_->oneof_decl_count(); ++i) {
+    vars["name"] = UnderscoresToCamelCase(descriptor_->oneof_decl(i)->name(), false);
+    vars["property_name"] = UnderscoresToCamelCase(descriptor_->oneof_decl(i)->name(), true);
+    printer->Print(vars, "switch (other.$property_name$Case) {\n");
+    printer->Indent();
+    for (int j = 0; j < descriptor_->oneof_decl(i)->field_count(); j++) {
+      const FieldDescriptor* field = descriptor_->oneof_decl(i)->field(j);
+      vars["field_property_name"] = GetPropertyName(field);
+      printer->Print(
+        vars,
+        "case $property_name$OneofCase.$field_property_name$:\n"
+        "  $field_property_name$ = other.$field_property_name$;\n"
+        "  break;\n");
+    }
+    printer->Outdent();
+    printer->Print("}\n\n");
+  }
+  printer->Outdent();
+  printer->Print("}\n\n");
+  printer->Print("public void MergeFrom(pb::CodedInputStream input) {\n");
+  printer->Indent();
+  printer->Print(
+    "uint tag;\n"
+    "while ((tag = input.ReadTag()) != 0) {\n"
+    "  switch(tag) {\n");
+  printer->Indent();
+  printer->Indent();
+  printer->Print(
+    "default:\n"
+    "  input.SkipLastField();\n" // We're not storing the data, but we still need to consume it.
+    "  break;\n");
+  for (int i = 0; i < fields_by_number().size(); i++) {
+    const FieldDescriptor* field = fields_by_number()[i];
+    internal::WireFormatLite::WireType wt =
+        internal::WireFormat::WireTypeForFieldType(field->type());
+    uint32 tag = internal::WireFormatLite::MakeTag(field->number(), wt);
+    // Handle both packed and unpacked repeated fields with the same Read*Array call;
+    // the two generated cases are the packed and unpacked tags.
+    // TODO(jonskeet): Check that is_packable is equivalent to is_repeated && wt in { VARINT, FIXED32, FIXED64 }.
+    // It looks like it is...
+    if (field->is_packable()) {
+      printer->Print(
+        "case $packed_tag$:\n",
+        "packed_tag",
+        SimpleItoa(
+            internal::WireFormatLite::MakeTag(
+                field->number(),
+                internal::WireFormatLite::WIRETYPE_LENGTH_DELIMITED)));
+    }
+
+    printer->Print("case $tag$: {\n", "tag", SimpleItoa(tag));
+    printer->Indent();
+    scoped_ptr<FieldGeneratorBase> generator(
+        CreateFieldGeneratorInternal(field));
+    generator->GenerateParsingCode(printer);
+    printer->Print("break;\n");
+    printer->Outdent();
+    printer->Print("}\n");
+  }
+  printer->Outdent();
+  printer->Print("}\n"); // switch
+  printer->Outdent();
+  printer->Print("}\n"); // while
+  printer->Outdent();
+  printer->Print("}\n\n"); // method
+}
+
+int MessageGenerator::GetFieldOrdinal(const FieldDescriptor* descriptor) {
+  for (int i = 0; i < field_names().size(); i++) {
+    if (field_names()[i] == descriptor->name()) {
+      return i;
+    }
+  }
+  GOOGLE_LOG(DFATAL)<< "Could not find ordinal for field " << descriptor->name();
+  return -1;
+}
+
+FieldGeneratorBase* MessageGenerator::CreateFieldGeneratorInternal(
+    const FieldDescriptor* descriptor) {
+  return CreateFieldGenerator(descriptor, GetFieldOrdinal(descriptor));
+}
+
+}  // namespace csharp
+}  // namespace compiler
+}  // namespace protobuf
+}  // namespace google