Merge "Support generation of Parcelable nano messages."

Android.mk

@@ -142,6 +142,7 @@ LOCAL_MODULE_TAGS := optional
 LOCAL_SDK_VERSION := 8
 
 LOCAL_SRC_FILES := $(call all-java-files-under, java/src/main/java/com/google/protobuf/nano)
+LOCAL_SRC_FILES += $(call all-java-files-under, java/src/device/main/java/com/google/protobuf/nano)
 
 include $(BUILD_STATIC_JAVA_LIBRARY)
 
@@ -379,3 +380,63 @@ LOCAL_PROTO_JAVA_OUTPUT_PARAMS := \
         java_outer_classname = $(LOCAL_PATH)/src/google/protobuf/unittest_import_nano.proto|UnittestImportNano
 
 include $(BUILD_STATIC_JAVA_LIBRARY)
+
+# To test Android-specific nanoproto features.
+# =======================================================
+include $(CLEAR_VARS)
+
+# Parcelable messages
+LOCAL_MODULE := android-nano-test-parcelable
+LOCAL_MODULE_TAGS := tests
+LOCAL_SDK_VERSION := current
+
+LOCAL_PROTOC_OPTIMIZE_TYPE := nano
+
+LOCAL_SRC_FILES := src/google/protobuf/unittest_simple_nano.proto
+
+LOCAL_PROTOC_FLAGS := --proto_path=$(LOCAL_PATH)/src
+
+LOCAL_PROTO_JAVA_OUTPUT_PARAMS := \
+        parcelable_messages = true
+
+include $(BUILD_STATIC_JAVA_LIBRARY)
+
+include $(CLEAR_VARS)
+
+# Parcelable and extendable messages
+LOCAL_MODULE := android-nano-test-parcelable-extendable
+LOCAL_MODULE_TAGS := tests
+LOCAL_SDK_VERSION := current
+
+LOCAL_PROTOC_OPTIMIZE_TYPE := nano
+
+LOCAL_SRC_FILES := src/google/protobuf/unittest_extension_nano.proto
+
+LOCAL_PROTOC_FLAGS := --proto_path=$(LOCAL_PATH)/src
+
+LOCAL_PROTO_JAVA_OUTPUT_PARAMS := \
+        parcelable_messages = true, \
+        store_unknown_fields = true
+
+include $(BUILD_STATIC_JAVA_LIBRARY)
+
+include $(CLEAR_VARS)
+
+# Test APK
+LOCAL_PACKAGE_NAME := NanoAndroidTest
+
+LOCAL_SDK_VERSION := 8
+
+LOCAL_MODULE_TAGS := tests
+
+LOCAL_SRC_FILES := $(call all-java-files-under, java/src/device/test/java/com/google/protobuf/nano)
+
+LOCAL_MANIFEST_FILE := java/src/device/test/AndroidManifest.xml
+
+LOCAL_STATIC_JAVA_LIBRARIES := libprotobuf-java-2.3.0-nano \
+        android-nano-test-parcelable \
+        android-nano-test-parcelable-extendable
+
+WITH_DEXPREOPT := false
+
+include $(BUILD_PACKAGE)

java/README.txt

@@ -476,6 +476,7 @@ java_nano_generate_has -> true or false [DEPRECATED]
 optional_field_style   -> default or accessors
 enum_style             -> c or java
 ignore_services        -> true or false
+parcelable_messages    -> true or false
 
 java_package:
 java_outer_classname:
@@ -588,6 +589,9 @@ ignore_services={true,false} (default: false)
   it will generate a compilation error. If this flag is set to true,
   services will be silently ignored, instead.
 
+parcelable_messages={true,false} (default: false)
+  Android-specific option to generate Parcelable messages.
+
 
 To use nano protobufs within the Android repo:
 
@@ -638,8 +642,13 @@ Please run the following steps to test:
 - cd ../../..
 - . build/envsetup.sh
 - lunch 1
-- "make -j12 aprotoc libprotobuf-java-2.3.0-nano aprotoc-test-nano-params" and
+- "make -j12 aprotoc libprotobuf-java-2.3.0-nano aprotoc-test-nano-params NanoAndroidTest" and
   check for build errors.
+- Plug in an Android device or start an emulator.
+- adb install -r out/target/product/generic/data/app/NanoAndroidTest.apk
+- Run:
+  "adb shell am instrument -w com.google.protobuf.nano.test/android.test.InstrumentationTestRunner"
+  and verify all tests pass.
 - repo sync -c -j256
 - "make -j12" and check for build errors
 

src/google/protobuf/compiler/javanano/javanano_generator.cc

@@ -144,6 +144,8 @@ bool JavaNanoGenerator::Generate(const FileDescriptor* file,
       params.set_generate_equals(option_value == "true");
     } else if (option_name == "ignore_services") {
       params.set_ignore_services(option_value == "true");
+    } else if (option_name == "parcelable_messages") {
+      params.set_parcelable_messages(option_value == "true");
     } else {
       *error = "Ignore unknown javanano generator option: " + option_name;
     }

src/google/protobuf/compiler/javanano/javanano_message.cc

@@ -132,10 +132,17 @@ void MessageGenerator::Generate(io::Printer* printer) {
       "public static final class $classname$ extends\n",
       "classname", descriptor_->name());
   }
-  if (params_.store_unknown_fields()) {
+  if (params_.store_unknown_fields() && params_.parcelable_messages()) {
+    printer->Print(
+      "    com.google.protobuf.nano.android.ParcelableExtendableMessageNano<$classname$> {\n",
+      "classname", descriptor_->name());
+  } else if (params_.store_unknown_fields()) {
     printer->Print(
       "    com.google.protobuf.nano.ExtendableMessageNano<$classname$> {\n",
       "classname", descriptor_->name());
+  } else if (params_.parcelable_messages()) {
+    printer->Print(
+      "    com.google.protobuf.nano.android.ParcelableMessageNano {\n");
   } else {
     printer->Print(
       "    com.google.protobuf.nano.MessageNano {\n");

src/google/protobuf/compiler/javanano/javanano_params.h

@@ -63,6 +63,7 @@ class Params {
   bool use_reference_types_for_primitives_;
   bool generate_equals_;
   bool ignore_services_;
+  bool parcelable_messages_;
 
  public:
   Params(const string & base_name) :
@@ -75,7 +76,8 @@ class Params {
     optional_field_accessors_(false),
     use_reference_types_for_primitives_(false),
     generate_equals_(false),
-    ignore_services_(false) {
+    ignore_services_(false),
+    parcelable_messages_(false) {
   }
 
   const string& base_name() const {
@@ -204,6 +206,13 @@ class Params {
   bool ignore_services() const {
     return ignore_services_;
   }
+
+  void set_parcelable_messages(bool value) {
+    parcelable_messages_ = value;
+  }
+  bool parcelable_messages() const {
+    return parcelable_messages_;
+  }
 };
 
 }  // namespace javanano