From f84177299a76759be1eb925093b059aef246fc0e Mon Sep 17 00:00:00 2001
From: Max Cai <maxtroy@google.com>
Date: Fri, 10 Jan 2014 13:26:51 +0000
Subject: Don't serialize required fields whose 'has' flags are unset.

Change-Id: Ibbe944fff83e44a8f2206e18ee9ec6f10661297a
---
 src/google/protobuf/compiler/javanano/javanano_enum_field.cc      | 5 +++--
 src/google/protobuf/compiler/javanano/javanano_primitive_field.cc | 7 ++++---
 src/google/protobuf/unittest_has_nano.proto                       | 2 ++
 3 files changed, 9 insertions(+), 5 deletions(-)

(limited to 'src')

diff --git a/src/google/protobuf/compiler/javanano/javanano_enum_field.cc b/src/google/protobuf/compiler/javanano/javanano_enum_field.cc
index 5d3511b..eb73232 100644
--- a/src/google/protobuf/compiler/javanano/javanano_enum_field.cc
+++ b/src/google/protobuf/compiler/javanano/javanano_enum_field.cc
@@ -121,7 +121,8 @@ GenerateMergingCode(io::Printer* printer) const {
 
 void EnumFieldGenerator::
 GenerateSerializationCode(io::Printer* printer) const {
-  if (descriptor_->is_required()) {
+  if (descriptor_->is_required() && !params_.generate_has()) {
+    // Always serialize a required field if we don't have the 'has' signal.
     printer->Print(variables_,
       "output.writeInt32($number$, this.$name$);\n");
   } else {
@@ -140,7 +141,7 @@ GenerateSerializationCode(io::Printer* printer) const {
 
 void EnumFieldGenerator::
 GenerateSerializedSizeCode(io::Printer* printer) const {
-  if (descriptor_->is_required()) {
+  if (descriptor_->is_required() && !params_.generate_has()) {
     printer->Print(variables_,
       "size += com.google.protobuf.nano.CodedOutputByteBufferNano\n"
       "  .computeInt32Size($number$, this.$name$);\n");
diff --git a/src/google/protobuf/compiler/javanano/javanano_primitive_field.cc b/src/google/protobuf/compiler/javanano/javanano_primitive_field.cc
index 3428f69..b6c98b4 100644
--- a/src/google/protobuf/compiler/javanano/javanano_primitive_field.cc
+++ b/src/google/protobuf/compiler/javanano/javanano_primitive_field.cc
@@ -342,7 +342,7 @@ GenerateMembers(io::Printer* printer, bool lazy_init) const {
 
   if (params_.generate_has()) {
     printer->Print(variables_,
-      "public boolean has$capitalized_name$ = false;\n");
+      "public boolean has$capitalized_name$;\n");
   }
 }
 
@@ -401,7 +401,8 @@ GenerateSerializationConditional(io::Printer* printer) const {
 
 void PrimitiveFieldGenerator::
 GenerateSerializationCode(io::Printer* printer) const {
-  if (descriptor_->is_required()) {
+  if (descriptor_->is_required() && !params_.generate_has()) {
+    // Always serialize a required field if we don't have the 'has' signal.
     printer->Print(variables_,
       "output.write$capitalized_type$($number$, this.$name$);\n");
   } else {
@@ -414,7 +415,7 @@ GenerateSerializationCode(io::Printer* printer) const {
 
 void PrimitiveFieldGenerator::
 GenerateSerializedSizeCode(io::Printer* printer) const {
-  if (descriptor_->is_required()) {
+  if (descriptor_->is_required() && !params_.generate_has()) {
     printer->Print(variables_,
       "size += com.google.protobuf.nano.CodedOutputByteBufferNano\n"
       "    .compute$capitalized_type$Size($number$, this.$name$);\n");
diff --git a/src/google/protobuf/unittest_has_nano.proto b/src/google/protobuf/unittest_has_nano.proto
index 3a1e5b5..61800f2 100644
--- a/src/google/protobuf/unittest_has_nano.proto
+++ b/src/google/protobuf/unittest_has_nano.proto
@@ -75,4 +75,6 @@ message TestAllTypesNanoHas {
   optional NestedEnum default_nested_enum = 81 [default = BAR];
 
   required int32 id = 86;
+  required NestedEnum required_enum = 87;
+
 }
-- 
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