third_party/protobuf: Update to HEAD (f52e188fe4)

third_party/protobuf/src/google/protobuf/compiler/java/java_primitive_field_lite.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.
@@ skipping 43 matching lines @@
 using internal::WireFormat;
 using internal::WireFormatLite;
 
 namespace {
 
 void SetPrimitiveVariables(const FieldDescriptor* descriptor,
                            int messageBitIndex,
                            int builderBitIndex,
                            const FieldGeneratorInfo* info,
                            ClassNameResolver* name_resolver,
-                           map<string, string>* variables) {
+                           std::map<string, string>* variables) {
   SetCommonFieldVariables(descriptor, info, variables);
-
-  (*variables)["type"] = PrimitiveTypeName(GetJavaType(descriptor));
-  (*variables)["boxed_type"] = BoxedPrimitiveTypeName(GetJavaType(descriptor));
+  JavaType javaType = GetJavaType(descriptor);
+  (*variables)["type"] = PrimitiveTypeName(javaType);
+  (*variables)["boxed_type"] = BoxedPrimitiveTypeName(javaType);
   (*variables)["field_type"] = (*variables)["type"];
   (*variables)["default"] = ImmutableDefaultValue(descriptor, name_resolver);
-  (*variables)["default_init"] = IsDefaultValueJavaDefault(descriptor) ?
-      "" : ("= " + ImmutableDefaultValue(descriptor, name_resolver));
   (*variables)["capitalized_type"] =
       GetCapitalizedType(descriptor, /* immutable = */ true);
-  (*variables)["tag"] = SimpleItoa(WireFormat::MakeTag(descriptor));
+  (*variables)["tag"] =
+      SimpleItoa(static_cast<int32>(WireFormat::MakeTag(descriptor)));
   (*variables)["tag_size"] = SimpleItoa(
       WireFormat::TagSize(descriptor->number(), GetType(descriptor)));
 
-  string capitalized_type = UnderscoresToCamelCase(PrimitiveTypeName(
-        GetJavaType(descriptor)), true /* cap_next_letter */);
-  switch (GetJavaType(descriptor)) {
+  string capitalized_type = UnderscoresToCamelCase(PrimitiveTypeName(javaType),
+                                                   true /* cap_next_letter */);
+  switch (javaType) {
     case JAVATYPE_INT:
     case JAVATYPE_LONG:
     case JAVATYPE_FLOAT:
     case JAVATYPE_DOUBLE:
     case JAVATYPE_BOOLEAN:
       (*variables)["field_list_type"] =
           "com.google.protobuf.Internal." + capitalized_type + "List";
       (*variables)["empty_list"] = "empty" + capitalized_type + "List()";
       (*variables)["make_name_unmodifiable"] =
           (*variables)["name"] + "_.makeImmutable()";
@@ skipping 13 matching lines @@
       (*variables)["empty_list"] = "emptyProtobufList()";
       (*variables)["make_name_unmodifiable"] =
           (*variables)["name"] + "_.makeImmutable()";
       (*variables)["repeated_get"] = (*variables)["name"] + "_.get";
       (*variables)["repeated_add"] = (*variables)["name"] + "_.add";
       (*variables)["repeated_set"] = (*variables)["name"] + "_.set";
       (*variables)["visit_type"] = "ByteString";
       (*variables)["visit_type_list"] = "visitList";
   }
 
-  if (IsReferenceType(GetJavaType(descriptor))) {
+  if (javaType == JAVATYPE_BYTES) {
+    (*variables)["bytes_default"] =
+        ToUpper((*variables)["name"]) + "_DEFAULT_VALUE";
+  }
+
+  if (IsReferenceType(javaType)) {
     (*variables)["null_check"] =
         "  if (value == null) {\n"
         "    throw new NullPointerException();\n"
         "  }\n";
   } else {
     (*variables)["null_check"] = "";
   }
   // TODO(birdo): Add @deprecated javadoc when generating javadoc is supported
   // by the proto compiler
   (*variables)["deprecation"] = descriptor->options().deprecated()
@@ skipping 71 matching lines @@
     printer->Print(variables_,
       "$deprecation$boolean has$capitalized_name$();\n");
   }
   WriteFieldDocComment(printer, descriptor_);
   printer->Print(variables_,
     "$deprecation$$type$ get$capitalized_name$();\n");
 }
 
 void ImmutablePrimitiveFieldLiteGenerator::
 GenerateMembers(io::Printer* printer) const {
+  if (IsByteStringWithCustomDefaultValue(descriptor_)) {
+    // allocate this once statically since we know ByteStrings are immutable
+    // values that can be reused.
+    printer->Print(
+        variables_,
+        "private static final $field_type$ $bytes_default$ = $default$;\n");
+  }
   printer->Print(variables_,
     "private $field_type$ $name$_;\n");
   PrintExtraFieldInfo(variables_, printer);
   if (SupportFieldPresence(descriptor_->file())) {
     WriteFieldDocComment(printer, descriptor_);
     printer->Print(variables_,
       "$deprecation$public boolean has$capitalized_name$() {\n"
       "  return $get_has_field_bit_message$;\n"
       "}\n");
   }
@@ skipping 63 matching lines @@
     "}\n");
 }
 
 void ImmutablePrimitiveFieldLiteGenerator::
 GenerateFieldBuilderInitializationCode(io::Printer* printer)  const {
   // noop for primitives
 }
 
 void ImmutablePrimitiveFieldLiteGenerator::
 GenerateInitializationCode(io::Printer* printer) const {
-  printer->Print(variables_, "$name$_ = $default$;\n");
+  if (IsByteStringWithCustomDefaultValue(descriptor_)) {
+    printer->Print(variables_, "$name$_ = $bytes_default$;\n");
+  } else if (!IsDefaultValueJavaDefault(descriptor_)) {
+    printer->Print(variables_, "$name$_ = $default$;\n");
+  }
 }
 
 void ImmutablePrimitiveFieldLiteGenerator::
 GenerateBuilderClearCode(io::Printer* printer) const {
   // noop for primitives
 }
 
 void ImmutablePrimitiveFieldLiteGenerator::
 GenerateVisitCode(io::Printer* printer) const {
   if (SupportFieldPresence(descriptor_->file())) {
@@ skipping 509 matching lines @@
 }
 
 void RepeatedImmutablePrimitiveFieldLiteGenerator::
 GenerateSerializationCode(io::Printer* printer) const {
   if (descriptor_->options().packed()) {
     // We invoke getSerializedSize in writeTo for messages that have packed
     // fields in ImmutableMessageGenerator::GenerateMessageSerializationMethods.
     // That makes it safe to rely on the memoized size here.
     printer->Print(variables_,
       "if (get$capitalized_name$List().size() > 0) {\n"
-      "  output.writeRawVarint32($tag$);\n"
-      "  output.writeRawVarint32($name$MemoizedSerializedSize);\n"
+      "  output.writeUInt32NoTag($tag$);\n"
+      "  output.writeUInt32NoTag($name$MemoizedSerializedSize);\n"
       "}\n"
       "for (int i = 0; i < $name$_.size(); i++) {\n"
       "  output.write$capitalized_type$NoTag($repeated_get$(i));\n"
       "}\n");
   } else {
     printer->Print(variables_,
       "for (int i = 0; i < $name$_.size(); i++) {\n"
       "  output.write$capitalized_type$($number$, $repeated_get$(i));\n"
       "}\n");
   }
@@ skipping 59 matching lines @@
 }
 
 string RepeatedImmutablePrimitiveFieldLiteGenerator::GetBoxedType() const {
   return BoxedPrimitiveTypeName(GetJavaType(descriptor_));
 }
 
 }  // namespace java
 }  // namespace compiler
 }  // namespace protobuf
 }  // namespace google