text: // 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.
  
  #include <map>
  #include <string>
  
  #include <google/protobuf/compiler/java_leo/java_context.h>
  #include <google/protobuf/compiler/java_leo/java_doc_comment.h>
  #include <google/protobuf/compiler/java_leo/java_helpers.h>
  #include <google/protobuf/compiler/java_leo/java_message_field.h>
  #include <google/protobuf/compiler/java_leo/java_name_resolver.h>
  #include <google/protobuf/io/printer.h>
  #include <google/protobuf/wire_format.h>
  
  namespace google {
  namespace protobuf {
  namespace compiler {
  namespace java_leo {
  
  namespace {
  
  void SetMessageVariables(const FieldDescriptor* descriptor, int messageBitIndex,
                           int builderBitIndex, const FieldGeneratorInfo* info,
                           ClassNameResolver* name_resolver,
                           std::map<std::string, std::string>* variables) {
    SetCommonFieldVariables(descriptor, info, variables);
  
    (*variables)["type"] =
        name_resolver->GetImmutableClassName(descriptor->message_type());
    (*variables)["mutable_type"] =
        name_resolver->GetMutableClassName(descriptor->message_type());
    (*variables)["group_or_message"] =
        (GetType(descriptor) == FieldDescriptor::TYPE_GROUP) ? "Group"
                                                             : "Message";
    // TODO(birdo): Add @deprecated javadoc when generating javadoc is supported
    // by the proto compiler
    (*variables)["deprecation"] =
        descriptor->options().deprecated() ? "@java.lang.Deprecated " : "";
    (*variables)["on_changed"] = "onChanged(" + FieldConstantName(descriptor) + ");";
    (*variables)["ver"] = GeneratedCodeVersionSuffix();
    (*variables)["get_parser"] =
        ExposePublicParser(descriptor->message_type()->file()) ? "PARSER"
                                                               : "parser()";
  
    if (HasHasbit(descriptor)) {
      // For singular messages and builders, one bit is used for the hasField bit.
      (*variables)["get_has_field_bit_message"] = GenerateGetBit(messageBitIndex);
      (*variables)["get_has_field_bit_builder"] = GenerateGetBit(builderBitIndex);
  
      // Note that these have a trailing ";".
      (*variables)["set_has_field_bit_message"] =
          GenerateSetBit(messageBitIndex) + ";";
      (*variables)["set_has_field_bit_builder"] =
          GenerateSetBit(builderBitIndex) + ";";
      (*variables)["clear_has_field_bit_builder"] =
          GenerateClearBit(builderBitIndex) + ";";
  
      (*variables)["is_field_present_message"] = GenerateGetBit(messageBitIndex);
    } else {
      (*variables)["set_has_field_bit_message"] = "";
      (*variables)["set_has_field_bit_builder"] = "";
      (*variables)["clear_has_field_bit_builder"] = "";
  
      (*variables)["is_field_present_message"] =
          (*variables)["name"] + "_ != null";
    }
  
    // For repeated builders, one bit is used for whether the array is immutable.
    (*variables)["get_mutable_bit_builder"] = GenerateGetBit(builderBitIndex);
    (*variables)["set_mutable_bit_builder"] = GenerateSetBit(builderBitIndex);
    (*variables)["clear_mutable_bit_builder"] = GenerateClearBit(builderBitIndex);
  
    // For repeated fields, one bit is used for whether the array is immutable
    // in the parsing constructor.
    (*variables)["get_mutable_bit_parser"] =
        GenerateGetBitMutableLocal(builderBitIndex);
    (*variables)["set_mutable_bit_parser"] =
        GenerateSetBitMutableLocal(builderBitIndex);
  
    (*variables)["get_has_field_bit_from_local"] =
        GenerateGetBitFromLocal(builderBitIndex);
    (*variables)["set_has_field_bit_to_local"] =
        GenerateSetBitToLocal(messageBitIndex);
  }
  
  }  // namespace
  
  // ===================================================================
  
  ImmutableMessageFieldGenerator::ImmutableMessageFieldGenerator(
      const FieldDescriptor* descriptor, int messageBitIndex, int builderBitIndex,
      Context* context)
      : descriptor_(descriptor), name_resolver_(context->GetNameResolver()) {
    SetMessageVariables(descriptor, messageBitIndex, builderBitIndex,
                        context->GetFieldGeneratorInfo(descriptor),
                        name_resolver_, &variables_);
  }
  
  ImmutableMessageFieldGenerator::~ImmutableMessageFieldGenerator() {}
  
  int ImmutableMessageFieldGenerator::GetNumBitsForMessage() const {
    return HasHasbit(descriptor_) ? 1 : 0;
  }
  
  int ImmutableMessageFieldGenerator::GetNumBitsForBuilder() const {
    return GetNumBitsForMessage();
  }
  
  void ImmutableMessageFieldGenerator::GenerateInterfaceMembers(
      io::Printer* printer) const {
    // TODO(jonp): In the future, consider having a method specific to the
    // interface so that builders can choose dynamically to either return a
    // message or a nested builder, so that asking for the interface doesn't
    // cause a message to ever be built.
    WriteFieldAccessorDocComment(printer, descriptor_, HAZZER);
    printer->Print(variables_, "$deprecation$boolean has$capitalized_name$();\n");
    WriteFieldAccessorDocComment(printer, descriptor_, GETTER);
    printer->Print(variables_, "$deprecation$$type$ get$capitalized_name$();\n");
  
    WriteFieldAccessorDocComment(printer, descriptor_, SETTER);
    printer->Print(variables_,
                   "$deprecation$SELF set$capitalized_name$($type$ value);\n");
  }
  
  void ImmutableMessageFieldGenerator::GenerateMembers(
      io::Printer* printer) const {
    printer->Print(variables_, "private $type$ $name$_;\n");
    PrintExtraFieldInfo(variables_, printer);
  
    if (HasHasbit(descriptor_)) {
      WriteFieldAccessorDocComment(printer, descriptor_, HAZZER);
      printer->Print(
          variables_,
          "@java.lang.Override\n"
          "$deprecation$public boolean ${$has$capitalized_name$$}$() {\n"
          "  return $get_has_field_bit_message$;\n"
          "}\n");
      printer->Annotate("{", "}", descriptor_);
      WriteFieldAccessorDocComment(printer, descriptor_, GETTER);
      printer->Print(
          variables_,
          "@java.lang.Override\n"
          "$deprecation$public $type$ ${$get$capitalized_name$$}$() {\n"
          "  return $name$_;\n"
          "}\n");
      printer->Annotate("{", "}", descriptor_);
  
      WriteFieldDocComment(printer, descriptor_);
      printer->Print(
          variables_,
          //"@java.lang.Override\n"
          "$deprecation$public $type$Interface "
          "${$get$capitalized_name$Interface$}$() {\n"
          "  return $name$_;\n"
          "}\n");
      printer->Annotate("{", "}", descriptor_);
    } else {
      WriteFieldAccessorDocComment(printer, descriptor_, HAZZER);
      printer->Print(
          variables_,
          "@java.lang.Override\n"
          "$deprecation$public boolean ${$has$capitalized_name$$}$() {\n"
          "  return $name$_ != null;\n"
          "}\n");
      printer->Annotate("{", "}", descriptor_);
      WriteFieldAccessorDocComment(printer, descriptor_, GETTER);
      printer->Print(
          variables_,
          "@java.lang.Override\n"
          "$deprecation$public $type$ ${$get$capitalized_name$$}$() {\n"
          "  return $name$_;\n"
          "}\n");
      printer->Annotate("{", "}", descriptor_);
  
    }
  
    // !!!! Leo !!!! Add Setters to messages
    WriteFieldAccessorDocComment(printer, descriptor_, SETTER, false);
    printer->Print(variables_,
                   "$deprecation$public $classname$ "
                   "${$set$capitalized_name$$}$($type$ value) {\n"
                   "  if (!java.util.Objects.equals(value, $name$_)) {\n"
                   "    $name$_ = value;\n"
                   "    $on_changed$\n"
                   "  }\n"
                   "  return this;\n"
                   "}\n");
    printer->Annotate("{", "}", descriptor_);
  
    // Field.Builder clearField()
    WriteFieldDocComment(printer, descriptor_);
    printer->Print(variables_, "$deprecation$public $classname$ ${$clear$capitalized_name$$}$() {\n"
        "  $name$_ = null;\n"
        "  $on_changed$\n"
        "  return this;\n"
        "}\n");
  }
  
  void ImmutableMessageFieldGenerator::PrintNestedBuilderCondition(
      io::Printer* printer, const char* regular_case,
      const char* nested_builder_case) const {
    printer->Print(variables_, "if ($name$Builder_ == null) {\n");
    printer->Indent();
    printer->Print(variables_, regular_case);
    printer->Outdent();
    printer->Print("} else {\n");
    printer->Indent();
    printer->Print(variables_, nested_builder_case);
    printer->Outdent();
    printer->Print("}\n");
  }
  
  void ImmutableMessageFieldGenerator::PrintNestedBuilderFunction(
      io::Printer* printer, const char* method_prototype,
      const char* regular_case, const char* nested_builder_case,
      const char* trailing_code) const {
    printer->Print(variables_, method_prototype);
    printer->Annotate("{", "}", descriptor_);
    printer->Print(" {\n");
    printer->Indent();
    PrintNestedBuilderCondition(printer, regular_case, nested_builder_case);
    if (trailing_code != NULL) {
      printer->Print(variables_, trailing_code);
    }
    printer->Outdent();
    printer->Print("}\n");
  }
  
  void ImmutableMessageFieldGenerator::GenerateInitializationCode(
      io::Printer* printer) const {}
  
  void ImmutableMessageFieldGenerator::GenerateClearCode(
      io::Printer* printer) const {
      printer->Print(variables_, "$name$_ = null;\n");
  }
  
  void ImmutableMessageFieldGenerator::GenerateToStringCode(io::Printer* printer) const {
    printer->Print(variables_, "sb.append(\"\\\"$name$\\\": \\\"\").append(java.lang.String.valueOf($name$_)).append(\"\\\",\\n\");\n");
  }
  
  void ImmutableMessageFieldGenerator::GenerateMergingCode(
      io::Printer* printer) const {
    printer->Print(variables_,
                   "if (other.has$capitalized_name$()) {\n"
                   "  merge$capitalized_name$(other.get$capitalized_name$());\n"
                   "}\n");
  }
  
  void ImmutableMessageFieldGenerator::GenerateParsingCode(
      io::Printer* printer) const {
    if (GetType(descriptor_) == FieldDescriptor::TYPE_GROUP) {
      printer->Print(variables_,
                     "$name$_ = input.readGroup($number$, $type$.$get_parser$,\n"
                     "    extensionRegistry);\n");
    } else {
      printer->Print(variables_,
                     "$name$_ = input.readMessage($type$.$get_parser$, "
                     "extensionRegistry);\n");
    }
  }
  
  void ImmutableMessageFieldGenerator::GenerateParsingDoneCode(
      io::Printer* printer) const {
    // noop for messages.
  }
  
  void ImmutableMessageFieldGenerator::GenerateSerializationCode(
      io::Printer* printer) const {
    printer->Print(
        variables_,
        "if ($is_field_present_message$) {\n"
        "  output.write$group_or_message$($number$, get$capitalized_name$());\n"
        "}\n");
  }
  
  void ImmutableMessageFieldGenerator::GenerateSerializedSizeCode(
      io::Printer* printer) const {
    printer->Print(
        variables_,
        "if ($is_field_present_message$) {\n"
        "  size += com.google.protobuf.CodedOutputStream\n"
        "    .compute$group_or_message$Size($number$, get$capitalized_name$());\n"
        "}\n");
  }
  
  void ImmutableMessageFieldGenerator::GenerateEqualsCode(
      io::Printer* printer) const {
    printer->Print(variables_,
                   "if (!java.util.Objects.equals(get$capitalized_name$(),\n"
                   "    other.get$capitalized_name$())) return false;\n");
  }
  
  void ImmutableMessageFieldGenerator::GenerateHashCode(
      io::Printer* printer) const {
    printer->Print(variables_,
                   "hash = (37 * hash) + $constant_name$;\n"
                   "hash = (53 * hash) + java.util.Objects.hashCode(get$capitalized_name$());\n");
  }
  
  std::string ImmutableMessageFieldGenerator::GetBoxedType() const {
    return name_resolver_->GetImmutableClassName(descriptor_->message_type());
  }
  
  // ===================================================================
  
  ImmutableMessageOneofFieldGenerator::ImmutableMessageOneofFieldGenerator(
      const FieldDescriptor* descriptor, int messageBitIndex, int builderBitIndex,
      Context* context)
      : ImmutableMessageFieldGenerator(descriptor, messageBitIndex,
                                       builderBitIndex, context) {
    const OneofGeneratorInfo* info =
        context->GetOneofGeneratorInfo(descriptor->containing_oneof());
    SetCommonOneofVariables(descriptor, info, &variables_);
  }
  
  ImmutableMessageOneofFieldGenerator::~ImmutableMessageOneofFieldGenerator() {}
  
  void ImmutableMessageOneofFieldGenerator::GenerateMembers(
      io::Printer* printer) const {
    PrintExtraFieldInfo(variables_, printer);
    WriteFieldAccessorDocComment(printer, descriptor_, HAZZER);
    printer->Print(variables_,
                   "@java.lang.Override\n"
                   "$deprecation$public boolean ${$has$capitalized_name$$}$() {\n"
                   "  return $has_oneof_case_message$;\n"
                   "}\n");
    printer->Annotate("{", "}", descriptor_);
    WriteFieldAccessorDocComment(printer, descriptor_, GETTER);
    printer->Print(variables_,
                   "@java.lang.Override\n"
                   "$deprecation$public $type$ ${$get$capitalized_name$$}$() {\n"
                   "  if ($has_oneof_case_message$) {\n"
                   "     return ($type$) $oneof_name$_;\n"
                   "  }\n"
                   "  return null;\n"
                   "}\n");
    printer->Annotate("{", "}", descriptor_);
  
    // Field.Builder setField(Field value)
    WriteFieldDocComment(printer, descriptor_);
    printer->Print(variables_,
        "$deprecation$public $classname$ ${$set$capitalized_name$$}$($type$ value) {\n"
        "$oneof_name$_ = value;\n"
        "$on_changed$\n"
        "return this;\n"
        "}\n");
  }
  
  void ImmutableMessageOneofFieldGenerator::GenerateMergingCode(
      io::Printer* printer) const {
    printer->Print(variables_,
                   "merge$capitalized_name$(other.get$capitalized_name$());\n");
  }
  
  void ImmutableMessageOneofFieldGenerator::GenerateParsingCode(
      io::Printer* printer) const {
    if (GetType(descriptor_) == FieldDescriptor::TYPE_GROUP) {
      printer->Print(
          variables_,
          "$oneof_name$_ = input.readGroup($number$, $type$.$get_parser$,\n"
          "    extensionRegistry);\n");
    } else {
      printer->Print(
          variables_,
          "$oneof_name$_ =\n"
          "    input.readMessage($type$.$get_parser$, extensionRegistry);\n");
    }
    printer->Print(variables_, "$set_oneof_case_message$;\n");
  }
  
  void ImmutableMessageOneofFieldGenerator::GenerateSerializationCode(
      io::Printer* printer) const {
    printer->Print(
        variables_,
        "if ($has_oneof_case_message$) {\n"
        "  output.write$group_or_message$($number$, ($type$) $oneof_name$_);\n"
        "}\n");
  }
  
  void ImmutableMessageOneofFieldGenerator::GenerateSerializedSizeCode(
      io::Printer* printer) const {
    printer->Print(
        variables_,
        "if ($has_oneof_case_message$) {\n"
        "  size += com.google.protobuf.CodedOutputStream\n"
        "    .compute$group_or_message$Size($number$, ($type$) $oneof_name$_);\n"
        "}\n");
  }
  
  // ===================================================================
  
  RepeatedImmutableMessageFieldGenerator::RepeatedImmutableMessageFieldGenerator(
      const FieldDescriptor* descriptor, int messageBitIndex, int builderBitIndex,
      Context* context)
      : descriptor_(descriptor), name_resolver_(context->GetNameResolver()) {
    SetMessageVariables(descriptor, messageBitIndex, builderBitIndex,
                        context->GetFieldGeneratorInfo(descriptor),
                        name_resolver_, &variables_);
  }
  
  RepeatedImmutableMessageFieldGenerator::
      ~RepeatedImmutableMessageFieldGenerator() {}
  
  int RepeatedImmutableMessageFieldGenerator::GetNumBitsForMessage() const {
    return 0;
  }
  
  int RepeatedImmutableMessageFieldGenerator::GetNumBitsForBuilder() const {
    return 1;
  }
  
  void RepeatedImmutableMessageFieldGenerator::GenerateInterfaceMembers(
      io::Printer* printer) const {
    // TODO(jonp): In the future, consider having methods specific to the
    // interface so that builders can choose dynamically to either return a
    // message or a nested builder, so that asking for the interface doesn't
    // cause a message to ever be built.
    WriteFieldDocComment(printer, descriptor_);
    printer->Print(variables_,
                   "$deprecation$java.util.List<$type$> \n"
                   "    get$capitalized_name$List();\n");
    WriteFieldDocComment(printer, descriptor_);
    printer->Print(variables_,
                   "$deprecation$$type$ get$capitalized_name$(int index);\n");
    WriteFieldDocComment(printer, descriptor_);
    printer->Print(variables_,
                   "$deprecation$int get$capitalized_name$Count();\n");
  
    WriteFieldDocComment(printer, descriptor_);
    printer->Print(variables_, "$deprecation$public SELF ${$set$capitalized_name$$}$(int index, $type$ value);\n");
  
    WriteFieldDocComment(printer, descriptor_);
    printer->Print(variables_, "$deprecation$public SELF ${$add$capitalized_name$$}$($type$ value);\n");
  
    WriteFieldDocComment(printer, descriptor_);
    printer->Print(variables_, "$deprecation$public SELF ${$addAll$capitalized_name$$}$(java.util.Collection<$type$> values);\n");
  
    WriteFieldDocComment(printer, descriptor_);
    printer->Print(variables_, "$deprecation$public SELF ${$clear$capitalized_name$$}$();\n");
  }
  
  void RepeatedImmutableMessageFieldGenerator::GenerateMembers(
      io::Printer* printer) const {
    printer->Print(variables_, "private java.util.List<$type$> $name$_;\n");
    PrintExtraFieldInfo(variables_, printer);
    WriteFieldDocComment(printer, descriptor_);
    printer->Print(variables_,
                   "@java.lang.Override\n"
                   "$deprecation$public java.util.List<$type$> "
                   "${$get$capitalized_name$List$}$() {\n"
                   "  return $name$_;\n"  // note:  unmodifiable list
                   "}\n");
    printer->Annotate("{", "}", descriptor_);
    WriteFieldDocComment(printer, descriptor_);
    printer->Print(
        variables_,
        //"@java.lang.Override\n"
        "$deprecation$public java.util.List<? extends $type$Interface> \n"
        "    ${$get$capitalized_name$InterfaceList$}$() {\n"
        "  return $name$_;\n"
        "}\n");
    printer->Annotate("{", "}", descriptor_);
    WriteFieldDocComment(printer, descriptor_);
    printer->Print(
        variables_,
        "@java.lang.Override\n"
        "$deprecation$public int ${$get$capitalized_name$Count$}$() {\n"
        "  return $name$_.size();\n"
        "}\n");
    printer->Annotate("{", "}", descriptor_);
    WriteFieldDocComment(printer, descriptor_);
    printer->Print(
        variables_,
        "@java.lang.Override\n"
        "$deprecation$public $type$ ${$get$capitalized_name$$}$(int index) {\n"
        "  return $name$_.get(index);\n"
        "}\n");
    printer->Annotate("{", "}", descriptor_);
  
    printer->Annotate("{", "}", descriptor_);
    WriteFieldAccessorDocComment(printer, descriptor_, LIST_INDEXED_SETTER, true);
    printer->Print(variables_,
                   "@java.lang.Override\n"
                   "$deprecation$public $classname$ ${$set$capitalized_name$$}$(\n"
                   "    int index, $type$ value) {\n"
                   "  $name$_.set(index, value);\n"
                   "  $on_changed$\n"
                   "  return this;\n"
                   "}\n");
    printer->Annotate("{", "}", descriptor_);
    WriteFieldAccessorDocComment(printer, descriptor_, LIST_ADDER, true);
    printer->Print(variables_,
                   "$deprecation$public $classname$ ${$add$capitalized_name$$}$(\n"
                   "    $type$ value) {\n"
                   "  $name$_.add(value);\n"
                   "  $on_changed$\n"
                   "  return this;\n"
                   "}\n");
    printer->Annotate("{", "}", descriptor_);
    WriteFieldAccessorDocComment(printer, descriptor_, LIST_MULTI_ADDER, true);
    printer->Print(variables_,
                   "$deprecation$public $classname$ ${$addAll$capitalized_name$$}$(\n"
                   "    java.util.Collection<$type$> values) {\n"
                   "  $name$_.addAll(values);\n"
                   "  $on_changed$\n"
                   "  return this;\n"
                   "}\n");
    printer->Annotate("{", "}", descriptor_);
    WriteFieldAccessorDocComment(printer, descriptor_, CLEARER, true);
    printer->Print(
        variables_,
        "$deprecation$public $classname$ ${$clear$capitalized_name$$}$() {\n"
        "  $name$_ = new java.util.ArrayList<$type$>($name$_);\n"
        "  $on_changed$\n"
        "  return this;\n"
        "}\n");
    printer->Annotate("{", "}", descriptor_);
  }
  
  void RepeatedImmutableMessageFieldGenerator::PrintNestedBuilderCondition(
      io::Printer* printer, const char* regular_case,
      const char* nested_builder_case) const {
    printer->Print(variables_, "if ($name$Builder_ == null) {\n");
    printer->Indent();
    printer->Print(variables_, regular_case);
    printer->Outdent();
    printer->Print("} else {\n");
    printer->Indent();
    printer->Print(variables_, nested_builder_case);
    printer->Outdent();
    printer->Print("}\n");
  }
  
  void RepeatedImmutableMessageFieldGenerator::PrintNestedBuilderFunction(
      io::Printer* printer, const char* method_prototype,
      const char* regular_case, const char* nested_builder_case,
      const char* trailing_code) const {
    printer->Print(variables_, method_prototype);
    printer->Annotate("{", "}", descriptor_);
    printer->Print(" {\n");
    printer->Indent();
    PrintNestedBuilderCondition(printer, regular_case, nested_builder_case);
    if (trailing_code != NULL) {
      printer->Print(variables_, trailing_code);
    }
    printer->Outdent();
    printer->Print("}\n");
  }
  
  void RepeatedImmutableMessageFieldGenerator::GenerateInitializationCode(
      io::Printer* printer) const {
    printer->Print(variables_, "$name$_ = new java.util.ArrayList<$type$>();\n");
  }
  
  void RepeatedImmutableMessageFieldGenerator::GenerateClearCode(
      io::Printer* printer) const {
    printer->Print(variables_,
                                "$name$_ = java.util.Collections.emptyList();\n");
  }
  
  void RepeatedImmutableMessageFieldGenerator::GenerateToStringCode(io::Printer* printer) const {
    printer->Print(variables_, "sb.append(\"\\\"$name$\\\": \").append(java.lang.String.valueOf($name$_)).append(\",\\n\");\n");
  }
  
  void RepeatedImmutableMessageFieldGenerator::GenerateMergingCode(
      io::Printer* printer) const {
    // The code below does two optimizations (non-nested builder case):
    //   1. If the other list is empty, there's nothing to do. This ensures we
    //      don't allocate a new array if we already have an immutable one.
    //   2. If the other list is non-empty and our current list is empty, we can
    //      reuse the other list which is guaranteed to be immutable.
    PrintNestedBuilderCondition(
        printer,
        "if (!other.$name$_.isEmpty()) {\n"
        "  if ($name$_.isEmpty()) {\n"
        "    $name$_ = other.$name$_;\n"
        "    $clear_mutable_bit_builder$;\n"
        "  } else {\n"
        "    ensure$capitalized_name$IsMutable();\n"
        "    $name$_.addAll(other.$name$_);\n"
        "  }\n"
        "  $on_changed$\n"
        "}\n",
  
        "if (!other.$name$_.isEmpty()) {\n"
        "  if ($name$Builder_.isEmpty()) {\n"
        "    $name$Builder_.dispose();\n"
        "    $name$Builder_ = null;\n"
        "    $name$_ = other.$name$_;\n"
        "    $clear_mutable_bit_builder$;\n"
        "    $name$Builder_ = \n"
        "      com.google.protobuf.GeneratedMessage$ver$.alwaysUseFieldBuilders "
        "?\n"
        "         get$capitalized_name$FieldBuilder() : null;\n"
        "  } else {\n"
        "    $name$Builder_.addAllMessages(other.$name$_);\n"
        "  }\n"
        "}\n");
  }
  
  void RepeatedImmutableMessageFieldGenerator::GenerateParsingCode(
      io::Printer* printer) const {
    printer->Print(variables_,
                   "if (!$get_mutable_bit_parser$) {\n"
                   "  $name$_ = new java.util.ArrayList<$type$>();\n"
                   "  $set_mutable_bit_parser$;\n"
                   "}\n");
  
    if (GetType(descriptor_) == FieldDescriptor::TYPE_GROUP) {
      printer->Print(
          variables_,
          "$name$_.add(input.readGroup($number$, $type$.$get_parser$,\n"
          "    extensionRegistry));\n");
    } else {
      printer->Print(
          variables_,
          "$name$_.add(\n"
          "    input.readMessage($type$.$get_parser$, extensionRegistry));\n");
    }
  }
  
  void RepeatedImmutableMessageFieldGenerator::GenerateParsingDoneCode(
      io::Printer* printer) const {
  }
  
  void RepeatedImmutableMessageFieldGenerator::GenerateSerializationCode(
      io::Printer* printer) const {
    printer->Print(variables_,
                   "for (int i = 0; i < $name$_.size(); i++) {\n"
                   "  output.write$group_or_message$($number$, $name$_.get(i));\n"
                   "}\n");
  }
  
  void RepeatedImmutableMessageFieldGenerator::GenerateSerializedSizeCode(
      io::Printer* printer) const {
    printer->Print(
        variables_,
        "for (int i = 0; i < $name$_.size(); i++) {\n"
        "  size += com.google.protobuf.CodedOutputStream\n"
        "    .compute$group_or_message$Size($number$, $name$_.get(i));\n"
        "}\n");
  }
  
  void RepeatedImmutableMessageFieldGenerator::GenerateEqualsCode(
      io::Printer* printer) const {
    printer->Print(
        variables_,
        "if (!java.util.Objects.equals(get$capitalized_name$List(),\n"
        "    other.get$capitalized_name$List())) return false;\n");
  }
  
  void RepeatedImmutableMessageFieldGenerator::GenerateHashCode(
      io::Printer* printer) const {
    printer->Print(
        variables_,
        "if (get$capitalized_name$Count() > 0) {\n"
        "  hash = (37 * hash) + $constant_name$;\n"
        "  hash = (53 * hash) + java.util.Objects.hashCode(get$capitalized_name$List());\n"
        "}\n");
  }
  
  std::string RepeatedImmutableMessageFieldGenerator::GetBoxedType() const {
    return name_resolver_->GetImmutableClassName(descriptor_->message_type());
  }
  
  }  // namespace java
  }  // namespace compiler
  }  // namespace protobuf
  }  // namespace google
  