/**
 * TODO (guptasu): Only needed to create NullValue enum.  Check if this can be removed.
 * Create the Protobuf.Enum instance from enumDescriptorProto.
 */
private static Enum createEnum(String enumName,
    EnumDescriptorProto enumDescriptorProto, String fileName) {

  com.google.protobuf.Enum.Builder coreEnumBuilder =
      com.google.protobuf.Enum.newBuilder().setName(enumName);

  coreEnumBuilder.setSyntax(Syntax.SYNTAX_PROTO3);

  for (EnumValueDescriptorProto value : enumDescriptorProto.getValueList()) {
    com.google.protobuf.EnumValue.Builder coreEnumValueBuilder =
        com.google.protobuf.EnumValue.newBuilder();
    coreEnumValueBuilder.setName(value.getName()).setNumber(value.getNumber());
    coreEnumBuilder.addEnumvalue(coreEnumValueBuilder.build());
  }

  coreEnumBuilder.setSourceContext(SourceContext.newBuilder().setFileName(fileName));
  return coreEnumBuilder.build();
}
 

private EnumDescriptor(final EnumDescriptorProto proto,
                       final FileDescriptor file,
                       final Descriptor parent,
                       final int index)
                throws DescriptorValidationException {
  this.index = index;
  this.proto = proto;
  fullName = computeFullName(file, parent, proto.getName());
  this.file = file;
  containingType = parent;

  if (proto.getValueCount() == 0) {
    // We cannot allow enums with no values because this would mean there
    // would be no valid default value for fields of this type.
    throw new DescriptorValidationException(this,
      "Enums must contain at least one value.");
  }

  values = new EnumValueDescriptor[proto.getValueCount()];
  for (int i = 0; i < proto.getValueCount(); i++) {
    values[i] = new EnumValueDescriptor(
      proto.getValue(i), file, this, i);
  }

  file.pool.addSymbol(this);
}
 

@Nullable
private static String getFullName(FileDescriptorProto descriptor, List<Integer> path) {
    String fullNameSoFar = descriptor.getPackage();
    switch (path.get(0)) {
        case FileDescriptorProto.MESSAGE_TYPE_FIELD_NUMBER:
            final DescriptorProto message = descriptor.getMessageType(path.get(1));
            return appendMessageToFullName(message, path, fullNameSoFar);
        case FileDescriptorProto.ENUM_TYPE_FIELD_NUMBER:
            final EnumDescriptorProto enumDescriptor = descriptor.getEnumType(path.get(1));
            return appendEnumToFullName(enumDescriptor, path, fullNameSoFar);
        case FileDescriptorProto.SERVICE_FIELD_NUMBER:
            final ServiceDescriptorProto serviceDescriptor = descriptor.getService(path.get(1));
            fullNameSoFar = appendNameComponent(fullNameSoFar, serviceDescriptor.getName());
            if (path.size() > 2) {
                fullNameSoFar = appendFieldComponent(
                        fullNameSoFar, serviceDescriptor.getMethod(path.get(3)).getName());
            }
            return fullNameSoFar;
        default:
            return null;
    }
}
 

@Nullable
private static String appendToFullName(
        DescriptorProto messageDescriptor, List<Integer> path, String fullNameSoFar) {
    switch (path.get(0)) {
        case DescriptorProto.NESTED_TYPE_FIELD_NUMBER:
            final DescriptorProto nestedMessage = messageDescriptor.getNestedType(path.get(1));
            return appendMessageToFullName(nestedMessage, path, fullNameSoFar);
        case DescriptorProto.ENUM_TYPE_FIELD_NUMBER:
            final EnumDescriptorProto enumDescriptor = messageDescriptor.getEnumType(path.get(1));
            return appendEnumToFullName(enumDescriptor, path, fullNameSoFar);
        case DescriptorProto.FIELD_FIELD_NUMBER:
            final FieldDescriptorProto fieldDescriptor = messageDescriptor.getField(path.get(1));
            return appendFieldComponent(fullNameSoFar, fieldDescriptor.getName());
        default:
            return null;
    }
}
 

private void doPrint(FileDescriptorProto fdp, String javaPackage, String outerClassName) {
  List<DescriptorProto> messageDescList = Lists.newArrayList(fdp.getMessageTypeList());
  List<ServiceDescriptorProto> serviceDescList = Lists.newArrayList(fdp.getServiceList());
  List<EnumDescriptorProto> enumDescList = Lists.newArrayList(fdp.getEnumTypeList());
  messageDescList.stream().filter(temp -> temp.getEnumTypeList() != null)
      .forEach(temp -> enumDescList.addAll(temp.getEnumTypeList()));
  printEnum(enumDescList, javaPackage, outerClassName);
  printMessage(messageDescList, javaPackage, outerClassName);
  printService(serviceDescList, javaPackage);
}
 

private void printEnum(List<EnumDescriptorProto> enumDescList, String javaPackage,
    String outerClassName) {
  for (EnumDescriptorProto enumDesc : enumDescList) {
    String enumClassType = enumDesc.getName();
    String enumPackageName = javaPackage + "." + outerClassName;
    String fullpojoType = enumPackageName.toLowerCase() + "." + enumClassType;
    pojoTypes.put(enumClassType, fullpojoType);
    PrintEnumFile enumFile = new PrintEnumFile(generatePath, enumPackageName, enumClassType);
    try {
      enumFile.setEnumFields(enumDesc.getValueList());
    } finally {
      enumFile.print();
    }
  }
}
 

private EnumDescriptorProto generateEnum(Enum e) {
  EnumDescriptorProto.Builder builder = EnumDescriptorProto.newBuilder();
  builder.setName(getSimpleName(e.getName()));
  for (EnumValue value : e.getEnumvalueList()) {
    EnumValueDescriptorProto.Builder valueBuilder = EnumValueDescriptorProto.newBuilder();
    valueBuilder.setName(value.getName());
    valueBuilder.setNumber(value.getNumber());
    valueBuilder.setOptions(generateEnumValueOptions(value));
    builder.addValue(valueBuilder.build());
  }
  builder.setOptions(generateEnumOptions(e));
  return builder.build();
}
 

private EnumType(ProtoContainerElement parent, EnumDescriptorProto proto, String path) {
  super(parent, proto.getName(), path);
  this.proto = proto;

  // Build values.
  ImmutableList.Builder<EnumValue> valuesBuilder = ImmutableList.builder();
  List<EnumValueDescriptorProto> valueProtos = proto.getValueList();
  for (int i = 0; i < valueProtos.size(); i++) {
    EnumValueDescriptorProto value = valueProtos.get(i);
    String childPath = buildPath(path, EnumDescriptorProto.VALUE_FIELD_NUMBER, i);
    valuesBuilder.add(EnumValue.create(this, value, childPath));
  }
  values = valuesBuilder.build();
}
 

@Accepts
protected void accept(EnumDescriptorProto.Builder enumType) {
  pushParent(BuilderVisitorNodeInfo.create(enumType, currentFile));
  visitRepeated(EnumDescriptorProto.VALUE_FIELD_NUMBER);
  visit(enumType.getOptionsBuilder());
  popExpectedParent(enumType);
}
 

/** See {@link FileDescriptor#setProto}. */
private void setProto(final EnumDescriptorProto proto) {
  this.proto = proto;

  for (int i = 0; i < values.length; i++) {
    values[i].setProto(proto.getValue(i));
  }
}
 

protected void decompile(EnumDescriptorProto enumDescriptor) throws IOException {
    indentedFormat("enum %s {", enumDescriptor.getName());
    indent++;
    if (enumDescriptor.hasOptions()) {
        decompileOptions(enumDescriptor.getOptions());
    }
    for (EnumValueDescriptorProto value : enumDescriptor.getValueList()) {
        indentedFormat("%s = %d%s;", value.getName(), value.getNumber(),
                       value.hasOptions() ? bracketedOptions(value.getOptions()) : "");
    }
    indent--;
    indentedFormat("}");
}
 

private static String appendEnumToFullName(
        EnumDescriptorProto enumDescriptor, List<Integer> path, String fullNameSoFar) {
    fullNameSoFar = appendNameComponent(fullNameSoFar, enumDescriptor.getName());
    if (path.size() > 2) {
        fullNameSoFar = appendFieldComponent(fullNameSoFar, enumDescriptor.getValue(path.get(3)).getName());
    }
    return fullNameSoFar;
}
 

DescriptorProtos.EnumDescriptorProto exchangeProto(
DescriptorProtos.EnumDescriptorProto arg);
 

@Override
public EnumDescriptorProto exchangeProto(EnumDescriptorProto arg) {
  return arg;
}
 

DescriptorProtos.EnumDescriptorProto exchangeProto(
DescriptorProtos.EnumDescriptorProto arg);
 

@Override
public EnumDescriptorProto exchangeProto(EnumDescriptorProto arg) {
  return arg;
}
 

public static List<Option> getOptions(EnumDescriptorProto descriptor) {
  return getOptions(descriptor, true);
}
 

public static List<Option> getOptions(EnumDescriptorProto descriptor, boolean withDefaults) {
  return toCoreOptions(maybeCombineOptionsWithDefault(withDefaults,
      descriptor.getOptions().getAllFields(), DEFAULT_ENUM_OPTIONS));
}
 

/**
 * Creates an enum backed up by the given proto.
 */
public static EnumType create(ProtoContainerElement parent, EnumDescriptorProto proto,
    String path) {
  return new EnumType(parent, proto, path);
}
 

/**
 * Returns the underlying proto representation.
 */
public EnumDescriptorProto getProto() {
  return proto;
}
 

/** Convert the descriptor to its protocol message representation. */
@Override
public EnumDescriptorProto toProto() {
  return proto;
}
 

/**
 * Tests the translate/crosslink for an example with a more complex namespace
 * referencing.
 */
public void testComplexNamespacePublicDependency() throws Exception {
  FileDescriptorProto fooProto = FileDescriptorProto.newBuilder()
      .setName("bar.proto")
      .setPackage("a.b.c.d.bar.shared")
      .addEnumType(EnumDescriptorProto.newBuilder()
          .setName("MyEnum")
          .addValue(EnumValueDescriptorProto.newBuilder()
              .setName("BLAH")
              .setNumber(1)))
      .build();
  FileDescriptorProto barProto = FileDescriptorProto.newBuilder()
      .setName("foo.proto")
      .addDependency("bar.proto")
      .setPackage("a.b.c.d.foo.shared")
      .addMessageType(DescriptorProto.newBuilder()
          .setName("MyMessage")
          .addField(FieldDescriptorProto.newBuilder()
              .setLabel(FieldDescriptorProto.Label.LABEL_REPEATED)
              .setTypeName("bar.shared.MyEnum")
              .setName("MyField")
              .setNumber(1)))
      .build();
  // translate and crosslink
  FileDescriptor fooFile = Descriptors.FileDescriptor.buildFrom(
      fooProto, new FileDescriptor[0]);
  FileDescriptor barFile = Descriptors.FileDescriptor.buildFrom(
      barProto, new FileDescriptor[]{fooFile});
  // verify resulting descriptors
  assertNotNull(barFile);
  List<Descriptor> msglist = barFile.getMessageTypes();
  assertNotNull(msglist);
  assertTrue(msglist.size() == 1);
  Descriptor desc = msglist.get(0);
  if (desc.getName().equals("MyMessage")) {
    assertNotNull(desc.getFields());
    List<FieldDescriptor> fieldlist = desc.getFields();
    assertNotNull(fieldlist);
    assertTrue(fieldlist.size() == 1);
    FieldDescriptor field = fieldlist.get(0);
    assertTrue(field.getType() == FieldDescriptor.Type.ENUM);
    assertTrue(field.getEnumType().getName().equals("MyEnum"));
    assertTrue(field.getEnumType().getFile().getName().equals("bar.proto"));
    assertTrue(field.getEnumType().getFile().getPackage().equals(
        "a.b.c.d.bar.shared"));
  }   
}
 

EnumDescriptorProto getEnumType() {
	return mEnumType;
}
 

private EnumDefinition(EnumDescriptorProto enumType) {
	mEnumType = enumType;
}
 

private Builder(String enumName) {
	mEnumTypeBuilder = EnumDescriptorProto.newBuilder();
	mEnumTypeBuilder.setName(enumName);
}