Add build targets for Java lite runtime. (#3288)

* Add a protobuf_java_lite target for lite runtime.

* Add a cc_binary for javalite plugin.

* Add proto_lang_toolchain for Java lite.

.gitignore

@@ -61,6 +61,7 @@ python/google/protobuf/compiler/
 python/google/protobuf/util/
 
 src/protoc
+src/protoc-gen-javalite
 src/unittest_proto_middleman
 
 # Generated test scaffolding

.travis.yml

@@ -1,92 +0,0 @@
-sudo: required
-# Note: travis currently does not support listing more than one language so
-# this cheats and claims to only be cpp.  If they add multiple language
-# support, this should probably get updated to install steps and/or
-# rvm/gemfile/jdk/etc. entries rather than manually doing the work.
-language: cpp
-os:
-  - linux
-  - osx
-# The Objective C build needs Xcode 7.0 or later.
-osx_image: xcode7.3
-script:
-  - ./tests.sh $CONFIG
-env:
-  - CONFIG=cpp
-  - CONFIG=cpp_distcheck
-  - CONFIG=golang
-  - CONFIG=java_jdk6
-  - CONFIG=java_jdk7
-  - CONFIG=java_oracle7
-  - CONFIG=javanano_jdk6
-  - CONFIG=javanano_jdk7
-  - CONFIG=javanano_oracle7
-  - CONFIG=javascript
-  # iOS build log was starting to choke travis UI, so split to cover the
-  # Xcode Debug and Release Configurations independently.
-  - CONFIG=objectivec_ios_debug
-  - CONFIG=objectivec_ios_release
-  - CONFIG=objectivec_osx
-  - CONFIG=objectivec_cocoapods_integration
-  - CONFIG=python
-  - CONFIG=python_cpp
-  - CONFIG=ruby19
-  - CONFIG=ruby20
-  - CONFIG=ruby21
-  - CONFIG=ruby22
-  - CONFIG=jruby
-matrix:
-  exclude:
-    # It's nontrivial to programmatically install a new JDK from the command
-    # line on OS X, so we rely on testing on Linux for Java code.
-    - os: osx
-      env: CONFIG=java_jdk6
-    - os: osx
-      env: CONFIG=java_jdk7
-    - os: osx
-      env: CONFIG=java_oracle7
-    - os: osx
-      env: CONFIG=javanano_jdk6
-    - os: osx
-      env: CONFIG=javanano_jdk7
-    - os: osx
-      env: CONFIG=javanano_oracle7
-    # Requires installing golang, currently travis.sh is doing that with apt-get
-    # which doesn't work on OS X.
-    - os: osx
-      env: CONFIG=golang
-    # OS X/iOS tests of Objective C (needs Xcode, so it won't work on other
-    # platforms).
-    - os: linux
-      env: CONFIG=objectivec_ios_debug
-    - os: linux
-      env: CONFIG=objectivec_ios_release
-    - os: linux
-      env: CONFIG=objectivec_osx
-    - os: linux
-      env: CONFIG=objectivec_cocoapods_integration
-  # The dotnet environment requires Ubuntu 14.04 or 16.04. This
-  # configuration is effectively an "extra" one, outside the
-  # autogenerated matrix.
-  include:
-    - os: linux
-      env: CONFIG=csharp
-      dist: trusty
-  allow_failures:
-    # These currently do not work on OS X but are being worked on by @haberman.
-    - os: osx
-      env: CONFIG=ruby22
-    - os: osx
-      env: CONFIG=jruby
-    # https://github.com/google/protobuf/issues/1253 - Started failing when
-    # we moved to an OS X image that is 10.11.
-    - os: osx
-      env: CONFIG=python_cpp
-    # Mark the iOS test as flakey as xcodebuild some times fails to start the
-    # iOS Simulator.
-    - os: osx
-      env: CONFIG=objectivec_ios_debug
-    - os: osx
-      env: CONFIG=objectivec_ios_release
-notifications:
-  email: false

BUILD

@@ -2,6 +2,8 @@
 
 licenses(["notice"])
 
+exports_files(["LICENSE"])
+
 ################################################################################
 # Protobuf Runtime Library
 ################################################################################
@@ -12,7 +14,7 @@ COPTS = [
     "-Wwrite-strings",
     "-Woverloaded-virtual",
     "-Wno-sign-compare",
-    "-Wno-error=unused-function",
+    "-Wno-unused-function",
 ]
 
 config_setting(
@@ -25,11 +27,11 @@ config_setting(
 # Android builds do not need to link in a separate pthread library.
 LINK_OPTS = select({
     ":android": [],
-    "//conditions:default": ["-lpthread"],
+    "//conditions:default": ["-lpthread", "-lm"],
 })
 
 load(
-    "protobuf",
+    ":protobuf.bzl",
     "cc_proto_library",
     "py_proto_library",
     "internal_copied_filegroup",
@@ -179,6 +181,17 @@ cc_library(
     deps = [":protobuf_lite"],
 )
 
+# This provides just the header files for use in projects that need to build
+# shared libraries for dynamic loading. This target is available until Bazel
+# adds native support for such use cases.
+# TODO(keveman): Remove this target once the support gets added to Bazel.
+cc_library(
+    name = "protobuf_headers",
+    hdrs = glob(["src/**/*.h"]),
+    includes = ["src/"],
+    visibility = ["//visibility:public"],
+)
+
 objc_library(
     name = "protobuf_objc",
     hdrs = ["objectivec/GPBProtocolBuffers.h"],
@@ -526,13 +539,100 @@ internal_gen_well_known_protos_java(
     srcs = WELL_KNOWN_PROTOS,
 )
 
+java_library(
+    name = "protobuf_java_lite",
+    srcs = [
+        "java/core/src/main/java/com/google/protobuf/AbstractMessageLite.java",
+        "java/core/src/main/java/com/google/protobuf/AbstractProtobufList.java",
+        "java/core/src/main/java/com/google/protobuf/AbstractParser.java",
+        "java/core/src/main/java/com/google/protobuf/BooleanArrayList.java",
+        "java/core/src/main/java/com/google/protobuf/ByteBufferWriter.java",
+        "java/core/src/main/java/com/google/protobuf/ByteOutput.java",
+        "java/core/src/main/java/com/google/protobuf/ByteString.java",
+        "java/core/src/main/java/com/google/protobuf/CodedInputStream.java",
+        "java/core/src/main/java/com/google/protobuf/CodedOutputStream.java",
+        "java/core/src/main/java/com/google/protobuf/DoubleArrayList.java",
+        "java/core/src/main/java/com/google/protobuf/ExperimentalApi.java",
+        "java/core/src/main/java/com/google/protobuf/ExtensionLite.java",
+        "java/core/src/main/java/com/google/protobuf/ExtensionRegistryFactory.java",
+        "java/core/src/main/java/com/google/protobuf/ExtensionRegistryLite.java",
+        "java/core/src/main/java/com/google/protobuf/FieldSet.java",
+        "java/core/src/main/java/com/google/protobuf/FloatArrayList.java",
+        "java/core/src/main/java/com/google/protobuf/GeneratedMessageLite.java",
+        "java/core/src/main/java/com/google/protobuf/IntArrayList.java",
+        "java/core/src/main/java/com/google/protobuf/Internal.java",
+        "java/core/src/main/java/com/google/protobuf/InvalidProtocolBufferException.java",
+        "java/core/src/main/java/com/google/protobuf/LazyField.java",
+        "java/core/src/main/java/com/google/protobuf/LazyFieldLite.java",
+        "java/core/src/main/java/com/google/protobuf/LazyStringArrayList.java",
+        "java/core/src/main/java/com/google/protobuf/LazyStringList.java",
+        "java/core/src/main/java/com/google/protobuf/LongArrayList.java",
+        "java/core/src/main/java/com/google/protobuf/MapEntryLite.java",
+        "java/core/src/main/java/com/google/protobuf/MapFieldLite.java",
+        "java/core/src/main/java/com/google/protobuf/MessageLite.java",
+        "java/core/src/main/java/com/google/protobuf/MessageLiteOrBuilder.java",
+        "java/core/src/main/java/com/google/protobuf/MessageLiteToString.java",
+        "java/core/src/main/java/com/google/protobuf/MutabilityOracle.java",
+        "java/core/src/main/java/com/google/protobuf/NioByteString.java",
+        "java/core/src/main/java/com/google/protobuf/Parser.java",
+        "java/core/src/main/java/com/google/protobuf/ProtobufArrayList.java",
+        "java/core/src/main/java/com/google/protobuf/ProtocolStringList.java",
+        "java/core/src/main/java/com/google/protobuf/RopeByteString.java",
+        "java/core/src/main/java/com/google/protobuf/SmallSortedMap.java",
+        "java/core/src/main/java/com/google/protobuf/TextFormatEscaper.java",
+        "java/core/src/main/java/com/google/protobuf/UninitializedMessageException.java",
+        "java/core/src/main/java/com/google/protobuf/UnknownFieldSetLite.java",
+        "java/core/src/main/java/com/google/protobuf/UnsafeUtil.java",
+        "java/core/src/main/java/com/google/protobuf/UnmodifiableLazyStringList.java",
+        "java/core/src/main/java/com/google/protobuf/Utf8.java",
+        "java/core/src/main/java/com/google/protobuf/WireFormat.java",
+    ],
+    visibility = ["//visibility:public"],
+)
+
+cc_binary(
+    name = "protoc_gen_javalite",
+    srcs = ["src/google/protobuf/compiler/java/java_lite_main.cc"],
+    linkopts = LINK_OPTS,
+    visibility = ["//visibility:public"],
+    deps = [":protoc_lib"],
+)
+
 java_library(
     name = "protobuf_java",
-    srcs = glob([
-        "java/core/src/main/java/com/google/protobuf/*.java",
-    ]) + [
+    srcs = [
+        "java/core/src/main/java/com/google/protobuf/AbstractMessage.java",
+        "java/core/src/main/java/com/google/protobuf/BlockingRpcChannel.java",
+        "java/core/src/main/java/com/google/protobuf/BlockingService.java",
+        "java/core/src/main/java/com/google/protobuf/Descriptors.java",
+        "java/core/src/main/java/com/google/protobuf/DynamicMessage.java",
+        "java/core/src/main/java/com/google/protobuf/Extension.java",
+        "java/core/src/main/java/com/google/protobuf/ExtensionRegistry.java",
+        "java/core/src/main/java/com/google/protobuf/GeneratedMessage.java",
+        "java/core/src/main/java/com/google/protobuf/MapEntry.java",
+        "java/core/src/main/java/com/google/protobuf/MapField.java",
+        "java/core/src/main/java/com/google/protobuf/Message.java",
+        "java/core/src/main/java/com/google/protobuf/MessageOrBuilder.java",
+        "java/core/src/main/java/com/google/protobuf/MessageReflection.java",
+        "java/core/src/main/java/com/google/protobuf/ProtocolMessageEnum.java",
+        "java/core/src/main/java/com/google/protobuf/RepeatedFieldBuilder.java",
+        "java/core/src/main/java/com/google/protobuf/RepeatedFieldBuilderV3.java",
+        "java/core/src/main/java/com/google/protobuf/RpcCallback.java",
+        "java/core/src/main/java/com/google/protobuf/RpcChannel.java",
+        "java/core/src/main/java/com/google/protobuf/RpcController.java",
+        "java/core/src/main/java/com/google/protobuf/RpcUtil.java",
+        "java/core/src/main/java/com/google/protobuf/Service.java",
+        "java/core/src/main/java/com/google/protobuf/ServiceException.java",
+        "java/core/src/main/java/com/google/protobuf/SingleFieldBuilder.java",
+        "java/core/src/main/java/com/google/protobuf/SingleFieldBuilderV3.java",
+        "java/core/src/main/java/com/google/protobuf/TextFormat.java",
+        "java/core/src/main/java/com/google/protobuf/TextFormatParseInfoTree.java",
+        "java/core/src/main/java/com/google/protobuf/TextFormatParseLocation.java",
+        "java/core/src/main/java/com/google/protobuf/UnknownFieldSet.java",
+        "java/core/src/main/java/com/google/protobuf/UnsafeByteOperations.java",
         ":gen_well_known_protos_java",
     ],
+    deps = [":protobuf_java_lite"],
     visibility = ["//visibility:public"],
 )
 
@@ -541,12 +641,12 @@ java_library(
     srcs = glob([
         "java/util/src/main/java/com/google/protobuf/util/*.java",
     ]),
+    visibility = ["//visibility:public"],
     deps = [
         "protobuf_java",
         "//external:gson",
         "//external:guava",
     ],
-    visibility = ["//visibility:public"],
 )
 
 ################################################################################
@@ -567,12 +667,12 @@ py_library(
             "python/google/protobuf/internal/test_util.py",
         ],
     ),
-    srcs_version = "PY2AND3",
     imports = ["python"],
+    srcs_version = "PY2AND3",
 )
 
 cc_binary(
-    name = "internal/_api_implementation.so",
+    name = "python/google/protobuf/internal/_api_implementation.so",
     srcs = ["python/google/protobuf/internal/api_implementation.cc"],
     copts = COPTS + [
         "-DPYTHON_PROTO2_CPP_IMPL_V2",
@@ -586,7 +686,7 @@ cc_binary(
 )
 
 cc_binary(
-    name = "pyext/_message.so",
+    name = "python/google/protobuf/pyext/_message.so",
     srcs = glob([
         "python/google/protobuf/pyext/*.cc",
         "python/google/protobuf/pyext/*.h",
@@ -633,8 +733,8 @@ config_setting(
 internal_copied_filegroup(
     name = "protos_python",
     srcs = WELL_KNOWN_PROTOS,
-    strip_prefix = "src",
     dest = "python",
+    strip_prefix = "src",
 )
 
 # TODO(dzc): Remove this once py_proto_library can have labels in srcs, in
@@ -648,15 +748,15 @@ py_proto_library(
     data = select({
         "//conditions:default": [],
         ":use_fast_cpp_protos": [
-            ":internal/_api_implementation.so",
-            ":pyext/_message.so",
+            ":python/google/protobuf/internal/_api_implementation.so",
+            ":python/google/protobuf/pyext/_message.so",
         ],
     }),
     default_runtime = "",
     protoc = ":protoc",
     py_libs = [
         ":python_srcs",
-        "//external:six"
+        "//external:six",
     ],
     srcs_version = "PY2AND3",
     visibility = ["//visibility:public"],
@@ -670,13 +770,14 @@ py_proto_library(
 internal_copied_filegroup(
     name = "protos_python_test",
     srcs = LITE_TEST_PROTOS + TEST_PROTOS,
-    strip_prefix = "src",
     dest = "python",
+    strip_prefix = "src",
 )
 
 # TODO(dzc): Remove this once py_proto_library can have labels in srcs, in
 # which case we can simply add :protos_python_test in srcs.
 COPIED_LITE_TEST_PROTOS = ["python/" + s for s in RELATIVE_LITE_TEST_PROTOS]
+
 COPIED_TEST_PROTOS = ["python/" + s for s in RELATIVE_TEST_PROTOS]
 
 py_proto_library(
@@ -744,3 +845,25 @@ internal_protobuf_py_tests(
     ],
     deps = [":python_tests"],
 )
+
+proto_lang_toolchain(
+    name = "cc_toolchain",
+    command_line = "--cpp_out=$(OUT)",
+    runtime = ":protobuf",
+    visibility = ["//visibility:public"],
+)
+
+proto_lang_toolchain(
+    name = "java_toolchain",
+    command_line = "--java_out=$(OUT)",
+    runtime = ":protobuf_java",
+    visibility = ["//visibility:public"],
+)
+
+proto_lang_toolchain(
+    name = "javalite_toolchain",
+    command_line = "--$(PLUGIN_OUT)=$(OUT)",
+    plugin = ":protoc_gen_javalite",
+    runtime = ":protobuf_java_lite",
+    visibility = ["//visibility:public"],
+)

WORKSPACE

@@ -1,15 +1,15 @@
-new_http_archive(
-    name = "gmock_archive",
-    url = "https://googlemock.googlecode.com/files/gmock-1.7.0.zip",
-    sha256 = "26fcbb5925b74ad5fc8c26b0495dfc96353f4d553492eb97e85a8a6d2f43095b",
+new_git_repository(
+    name = "googletest",
     build_file = "gmock.BUILD",
+    remote = "https://github.com/google/googletest",
+    tag = "release-1.8.0",
 )
 
 new_http_archive(
     name = "six_archive",
-    url = "https://pypi.python.org/packages/source/s/six/six-1.10.0.tar.gz#md5=34eed507548117b2ab523ab14b2f8b55",
-    sha256 = "105f8d68616f8248e24bf0e9372ef04d3cc10104f1980f54d57b2ce73a5ad56a",
     build_file = "six.BUILD",
+    sha256 = "105f8d68616f8248e24bf0e9372ef04d3cc10104f1980f54d57b2ce73a5ad56a",
+    url = "https://pypi.python.org/packages/source/s/six/six-1.10.0.tar.gz#md5=34eed507548117b2ab523ab14b2f8b55",
 )
 
 bind(
@@ -19,12 +19,12 @@ bind(
 
 bind(
     name = "gtest",
-    actual = "@gmock_archive//:gtest",
+    actual = "@googletest//:gtest",
 )
 
 bind(
     name = "gtest_main",
-    actual = "@gmock_archive//:gtest_main",
+    actual = "@googletest//:gtest_main",
 )
 
 bind(
@@ -33,8 +33,8 @@ bind(
 )
 
 maven_jar(
-  name = "guava_maven",
-  artifact = "com.google.guava:guava:18.0",
+    name = "guava_maven",
+    artifact = "com.google.guava:guava:18.0",
 )
 
 bind(
@@ -43,8 +43,8 @@ bind(
 )
 
 maven_jar(
-  name = "gson_maven",
-  artifact = "com.google.code.gson:gson:2.3",
+    name = "gson_maven",
+    artifact = "com.google.code.gson:gson:2.3",
 )
 
 bind(

appveyor.yml

@@ -19,9 +19,15 @@ environment:
 test: off
 
 install:
-  - ps: Start-FileDownload https://googlemock.googlecode.com/files/gmock-1.7.0.zip
-  - 7z x gmock-1.7.0.zip
-  - rename gmock-1.7.0 gmock
+  - ps: Start-FileDownload https://github.com/google/googlemock/archive/release-1.7.0.zip
+  - 7z x release-1.7.0.zip
+  - del /Q release-1.7.0.zip
+  - rename googlemock-release-1.7.0 gmock
+  - ps: Start-FileDownload https://github.com/google/googletest/archive/release-1.7.0.zip
+  - 7z x release-1.7.0.zip
+  - del /Q release-1.7.0.zip
+  - rename googletest-release-1.7.0 gtest
+  - move gtest gmock
   - ps: Start-FileDownload https://go.microsoft.com/fwlink/?LinkID=809122 -FileName dotnetsdk.exe
   - dotnetsdk.exe /install /quiet /norestart
 

autogen.sh

@@ -31,10 +31,15 @@ fi
 # directory is set up as an SVN external.
 if test ! -e gmock; then
   echo "Google Mock not present.  Fetching gmock-1.7.0 from the web..."
-  curl $curlopts -O https://googlemock.googlecode.com/files/gmock-1.7.0.zip
-  unzip -q gmock-1.7.0.zip
-  rm gmock-1.7.0.zip
-  mv gmock-1.7.0 gmock
+  curl $curlopts -L -O https://github.com/google/googlemock/archive/release-1.7.0.zip
+  unzip -q release-1.7.0.zip
+  rm release-1.7.0.zip
+  mv googlemock-release-1.7.0 gmock
+
+  curl $curlopts -L -O https://github.com/google/googletest/archive/release-1.7.0.zip
+  unzip -q release-1.7.0.zip
+  rm release-1.7.0.zip
+  mv googletest-release-1.7.0 gmock/gtest
 fi
 
 set -ex

gmock.BUILD

@@ -1,19 +1,19 @@
 cc_library(
     name = "gtest",
     srcs = [
-        "gmock-1.7.0/gtest/src/gtest-all.cc",
-        "gmock-1.7.0/src/gmock-all.cc",
+        "googletest/src/gtest-all.cc",
+        "googlemock/src/gmock-all.cc",
     ],
     hdrs = glob([
-        "gmock-1.7.0/**/*.h",
-        "gmock-1.7.0/gtest/src/*.cc",
-        "gmock-1.7.0/src/*.cc",
+        "**/*.h",
+        "googletest/src/*.cc",
+        "googlemock/src/*.cc",
     ]),
     includes = [
-        "gmock-1.7.0",
-        "gmock-1.7.0/gtest",
-        "gmock-1.7.0/gtest/include",
-        "gmock-1.7.0/include",
+        "googlemock",
+        "googletest",
+        "googletest/include",
+        "googlemock/include",
     ],
     linkopts = ["-pthread"],
     visibility = ["//visibility:public"],
@@ -21,7 +21,7 @@ cc_library(
 
 cc_library(
     name = "gtest_main",
-    srcs = ["gmock-1.7.0/src/gmock_main.cc"],
+    srcs = ["googlemock/src/gmock_main.cc"],
     linkopts = ["-pthread"],
     visibility = ["//visibility:public"],
     deps = [":gtest"],

java/core/src/main/java/com/google/protobuf/AbstractMessage.java

@@ -490,7 +490,7 @@ public abstract class AbstractMessage
 
     /**
      * Used to support nested builders and called to mark this builder as clean.
-     * Clean builders will propagate the {@link BuildParent#markDirty()} event
+     * Clean builders will propagate the {@link BuilderParent#markDirty()} event
      * to their parent builders, while dirty builders will not, as their parents
      * should be dirty already.
      *

java/core/src/main/java/com/google/protobuf/ByteOutput.java

@@ -37,11 +37,11 @@ import java.nio.ByteBuffer;
  * An output target for raw bytes. This interface provides semantics that support two types of
  * writing:
  *
- * <p/><b>Traditional write operations:</b>
+ * <p><b>Traditional write operations:</b>
  * (as defined by {@link java.io.OutputStream}) where the target method is responsible for either
  * copying the data or completing the write before returning from the method call.
  *
- * <p/><b>Lazy write operations:</b> where the caller guarantees that it will never modify the
+ * <p><b>Lazy write operations:</b> where the caller guarantees that it will never modify the
  * provided buffer and it can therefore be considered immutable. The target method is free to
  * maintain a reference to the buffer beyond the scope of the method call (e.g. until the write
  * operation completes).

java/core/src/main/java/com/google/protobuf/GeneratedMessage.java

@@ -854,6 +854,7 @@ public abstract class GeneratedMessage extends AbstractMessage
 
     /** Check if a singular extension is present. */
     @Override
+    @SuppressWarnings("unchecked")
     public final <Type> boolean hasExtension(final ExtensionLite<MessageType, Type> extensionLite) {
       Extension<MessageType, Type> extension = checkNotLite(extensionLite);
 
@@ -863,6 +864,7 @@ public abstract class GeneratedMessage extends AbstractMessage
 
     /** Get the number of elements in a repeated extension. */
     @Override
+    @SuppressWarnings("unchecked")
     public final <Type> int getExtensionCount(
         final ExtensionLite<MessageType, List<Type>> extensionLite) {
       Extension<MessageType, List<Type>> extension = checkNotLite(extensionLite);
@@ -2555,6 +2557,7 @@ public abstract class GeneratedMessage extends AbstractMessage
       }
 
       @Override
+      @SuppressWarnings("unchecked")
       public Object get(GeneratedMessage message) {
         List result = new ArrayList();
         for (int i = 0; i < getRepeatedCount(message); i++) {
@@ -2564,6 +2567,7 @@ public abstract class GeneratedMessage extends AbstractMessage
       }
 
       @Override
+      @SuppressWarnings("unchecked")
       public Object get(Builder builder) {
         List result = new ArrayList();
         for (int i = 0; i < getRepeatedCount(builder); i++) {

java/core/src/main/java/com/google/protobuf/GeneratedMessageLite.java

@@ -221,6 +221,7 @@ public abstract class GeneratedMessageLite<
   }
 
   @Override
+  @SuppressWarnings("unchecked")
   public final BuilderType toBuilder() {
     BuilderType builder = (BuilderType) dynamicMethod(MethodToInvoke.NEW_BUILDER);
     builder.mergeFrom((MessageType) this);
@@ -454,6 +455,7 @@ public abstract class GeneratedMessageLite<
      */
     protected FieldSet<ExtensionDescriptor> extensions = FieldSet.newFieldSet();
 
+    @SuppressWarnings("unchecked")
     protected final void mergeExtensionFields(final MessageType other) {
       if (extensions.isImmutable()) {
         extensions = extensions.clone();

java/core/src/main/java/com/google/protobuf/Internal.java

@@ -611,12 +611,12 @@ public final class Internal {
     int getInt(int index);
 
     /**
-     * Like {@link #add(Integer)} but more efficient in that it doesn't box the element.
+     * Like {@link #add(Object)} but more efficient in that it doesn't box the element.
      */
     void addInt(int element);
 
     /**
-     * Like {@link #set(int, Integer)} but more efficient in that it doesn't box the element.
+     * Like {@link #set(int, Object)} but more efficient in that it doesn't box the element.
      */
     int setInt(int index, int element);
 
@@ -639,12 +639,12 @@ public final class Internal {
     boolean getBoolean(int index);
 
     /**
-     * Like {@link #add(Boolean)} but more efficient in that it doesn't box the element.
+     * Like {@link #add(Object)} but more efficient in that it doesn't box the element.
      */
     void addBoolean(boolean element);
 
     /**
-     * Like {@link #set(int, Boolean)} but more efficient in that it doesn't box the element.
+     * Like {@link #set(int, Object)} but more efficient in that it doesn't box the element.
      */
     boolean setBoolean(int index, boolean element);
 
@@ -667,12 +667,12 @@ public final class Internal {
     long getLong(int index);
 
     /**
-     * Like {@link #add(Long)} but more efficient in that it doesn't box the element.
+     * Like {@link #add(Object)} but more efficient in that it doesn't box the element.
      */
     void addLong(long element);
 
     /**
-     * Like {@link #set(int, Long)} but more efficient in that it doesn't box the element.
+     * Like {@link #set(int, Object)} but more efficient in that it doesn't box the element.
      */
     long setLong(int index, long element);
 
@@ -695,12 +695,12 @@ public final class Internal {
     double getDouble(int index);
 
     /**
-     * Like {@link #add(Double)} but more efficient in that it doesn't box the element.
+     * Like {@link #add(Object)} but more efficient in that it doesn't box the element.
      */
     void addDouble(double element);
 
     /**
-     * Like {@link #set(int, Double)} but more efficient in that it doesn't box the element.
+     * Like {@link #set(int, Object)} but more efficient in that it doesn't box the element.
      */
     double setDouble(int index, double element);
 
@@ -723,12 +723,12 @@ public final class Internal {
     float getFloat(int index);
 
     /**
-     * Like {@link #add(Float)} but more efficient in that it doesn't box the element.
+     * Like {@link #add(Object)} but more efficient in that it doesn't box the element.
      */
     void addFloat(float element);
 
     /**
-     * Like {@link #set(int, Float)} but more efficient in that it doesn't box the element.
+     * Like {@link #set(int, Object)} but more efficient in that it doesn't box the element.
      */
     float setFloat(int index, float element);
 

java/core/src/main/java/com/google/protobuf/MapEntry.java

@@ -89,6 +89,7 @@ public final class MapEntry<K, V> extends AbstractMessage {
   }
 
   /** Create a MapEntry with the provided key and value. */
+  @SuppressWarnings("unchecked")
   private MapEntry(Metadata metadata, K key, V value) {
     this.key = key;
     this.value = value;
@@ -426,6 +427,7 @@ public final class MapEntry<K, V> extends AbstractMessage {
     }
 
     @Override
+    @SuppressWarnings("unchecked")
     public Builder<K, V> clone() {
       return new Builder(metadata, key, value);
     }

java/core/src/main/java/com/google/protobuf/MapField.java

@@ -100,6 +100,7 @@ public class MapField<K, V> implements MutabilityOracle {
     }
 
     @Override
+    @SuppressWarnings("unchecked")
     public void convertMessageToKeyAndValue(Message message, Map<K, V> map) {
       MapEntry<K, V> entry = (MapEntry<K, V>) message;
       map.put(entry.getKey(), entry.getValue());

java/core/src/main/java/com/google/protobuf/Parser.java

@@ -39,7 +39,7 @@ import java.io.InputStream;
  *
  * <p>All methods may throw {@link InvalidProtocolBufferException}. In the event of invalid data,
  * like an encoding error, the cause of the thrown exception will be {@code null}. However, if an
- * I/O problem occurs, an exception is thrown with an {@link IOException} cause.
+ * I/O problem occurs, an exception is thrown with an {@link java.io.IOException} cause.
  *
  * @author liujisi@google.com (Pherl Liu)
  */

java/core/src/main/java/com/google/protobuf/TextFormatParseInfoTree.java

@@ -45,7 +45,7 @@ import java.util.Map.Entry;
  *
  * <p>The locations of primary fields values are retrieved by {@code getLocation} or
  * {@code getLocations}.  The locations of sub message values are within nested
- * {@code TextFormatParseInfoTree}s and are retrieve by {@getNestedTree} or {code @getNestedTrees}.
+ * {@code TextFormatParseInfoTree}s and are retrieve by {@code getNestedTree} or {@code getNestedTrees}.
  *
  * <p>The {@code TextFormatParseInfoTree} is created by a Builder.
  */
@@ -197,7 +197,7 @@ public class TextFormatParseInfoTree {
      * Set for a sub message.
      *
      * <p>A new builder is created for a sub message. The builder that is returned is a new builder.
-     * The return is <emph>not</emph> the invoked {@code builder.getBuilderForSubMessageField}.
+     * The return is <em>not</em> the invoked {@code builder.getBuilderForSubMessageField}.
      *
      * @param fieldDescriptor the field whose value is the submessage
      * @return a new Builder for the sub message

java/lite/generate-sources-build.xml

@@ -2,8 +2,9 @@
     <echo message="Running protoc ..."/>
     <mkdir dir="${generated.sources.lite.dir}"/>
     <exec executable="${protoc}">
-        <arg value="--java_out=lite:${generated.sources.lite.dir}"/>
+        <arg value="--javalite_out=${generated.sources.lite.dir}"/>
         <arg value="--proto_path=${protobuf.source.dir}"/>
+        <arg value="--plugin=protoc-gen-javalite=${protoc-gen-javalite}"/>
         <arg value="${protobuf.source.dir}/google/protobuf/any.proto"/>
         <arg value="${protobuf.source.dir}/google/protobuf/api.proto"/>
         <arg value="${protobuf.source.dir}/google/protobuf/descriptor.proto"/>

java/lite/pom.xml

@@ -6,9 +6,10 @@
   <parent>
     <groupId>com.google.protobuf</groupId>
     <artifactId>protobuf-parent</artifactId>
-    <version>3.0.0-beta-3</version>
+    <version>3.0.0</version>
   </parent>
 
+  <version>3.0.1</version>
   <artifactId>protobuf-lite</artifactId>
   <packaging>bundle</packaging>
 
@@ -33,6 +34,7 @@
   <properties>
     <core.root>../core</core.root>
     <test.proto.dir>${core.root}/src/test/proto</test.proto.dir>
+    <protoc-gen-javalite>${protobuf.source.dir}/protoc-gen-javalite</protoc-gen-javalite>
   </properties>
 
   <build>

java/pom.xml

@@ -11,7 +11,7 @@
 
   <groupId>com.google.protobuf</groupId>
   <artifactId>protobuf-parent</artifactId>
-  <version>3.0.0-beta-3</version>
+  <version>3.0.0</version>
   <packaging>pom</packaging>
 
   <name>Protocol Buffers [Parent]</name>
@@ -151,6 +151,32 @@
       <id>release</id>
       <build>
         <plugins>
+          <plugin>
+            <groupId>org.apache.maven.plugins</groupId>
+            <artifactId>maven-source-plugin</artifactId>
+            <version>2.2.1</version>
+            <executions>
+              <execution>
+                <id>attach-sources</id>
+                <goals>
+                  <goal>jar-no-fork</goal>
+                </goals>
+              </execution>
+            </executions>
+          </plugin>
+          <plugin>
+            <groupId>org.apache.maven.plugins</groupId>
+            <artifactId>maven-javadoc-plugin</artifactId>
+            <version>2.9.1</version>
+            <executions>
+              <execution>
+                <id>attach-javadocs</id>
+                <goals>
+                  <goal>jar</goal>
+                </goals>
+              </execution>
+            </executions>
+          </plugin>
           <plugin>
             <artifactId>maven-gpg-plugin</artifactId>
             <version>1.6</version>

protobuf.bzl

@@ -1,12 +1,27 @@
-# -*- mode: python; -*- PYTHON-PREPROCESSING-REQUIRED
-
 def _GetPath(ctx, path):
   if ctx.label.workspace_root:
     return ctx.label.workspace_root + '/' + path
   else:
     return path
 
+def _IsNewExternal(ctx):
+  # Bazel 0.4.4 and older have genfiles paths that look like:
+  #   bazel-out/local-fastbuild/genfiles/external/repo/foo
+  # After the exec root rearrangement, they look like:
+  #   ../repo/bazel-out/local-fastbuild/genfiles/foo
+  return ctx.label.workspace_root.startswith("../")
+
 def _GenDir(ctx):
+  if _IsNewExternal(ctx):
+    # We are using the fact that Bazel 0.4.4+ provides repository-relative paths
+    # for ctx.genfiles_dir.
+    return ctx.genfiles_dir.path + (
+        "/" + ctx.attr.includes[0] if ctx.attr.includes and ctx.attr.includes[0] else "")
+  # This means that we're either in the old version OR the new version in the local repo.
+  # Either way, appending the source path to the genfiles dir works.
+  return ctx.var["GENDIR"] + "/" + _SourceDir(ctx)
+
+def _SourceDir(ctx):
   if not ctx.attr.includes:
     return ctx.label.workspace_root
   if not ctx.attr.includes[0]:
@@ -15,14 +30,21 @@ def _GenDir(ctx):
     return _GetPath(ctx, ctx.attr.includes[0])
   return _GetPath(ctx, ctx.label.package + '/' + ctx.attr.includes[0])
 
-def _CcOuts(srcs, use_grpc_plugin=False):
-  ret = [s[:-len(".proto")] + ".pb.h" for s in srcs] + \
-        [s[:-len(".proto")] + ".pb.cc" for s in srcs]
+def _CcHdrs(srcs, use_grpc_plugin=False):
+  ret = [s[:-len(".proto")] + ".pb.h" for s in srcs]
   if use_grpc_plugin:
-    ret += [s[:-len(".proto")] + ".grpc.pb.h" for s in srcs] + \
-           [s[:-len(".proto")] + ".grpc.pb.cc" for s in srcs]
+    ret += [s[:-len(".proto")] + ".grpc.pb.h" for s in srcs]
   return ret
 
+def _CcSrcs(srcs, use_grpc_plugin=False):
+  ret = [s[:-len(".proto")] + ".pb.cc" for s in srcs]
+  if use_grpc_plugin:
+    ret += [s[:-len(".proto")] + ".grpc.pb.cc" for s in srcs]
+  return ret
+
+def _CcOuts(srcs, use_grpc_plugin=False):
+  return _CcHdrs(srcs, use_grpc_plugin) + _CcSrcs(srcs, use_grpc_plugin)
+
 def _PyOuts(srcs):
   return [s[:-len(".proto")] + "_pb2.py" for s in srcs]
 
@@ -46,9 +68,10 @@ def _proto_gen_impl(ctx):
   srcs = ctx.files.srcs
   deps = []
   deps += ctx.files.srcs
+  source_dir = _SourceDir(ctx)
   gen_dir = _GenDir(ctx)
-  if gen_dir:
-    import_flags = ["-I" + gen_dir, "-I" + ctx.var["GENDIR"] + "/" + gen_dir]
+  if source_dir:
+    import_flags = ["-I" + source_dir, "-I" + gen_dir]
   else:
     import_flags = ["-I."]
 
@@ -58,20 +81,33 @@ def _proto_gen_impl(ctx):
 
   args = []
   if ctx.attr.gen_cc:
-    args += ["--cpp_out=" + ctx.var["GENDIR"] + "/" + gen_dir]
+    args += ["--cpp_out=" + gen_dir]
   if ctx.attr.gen_py:
-    args += ["--python_out=" + ctx.var["GENDIR"] + "/" + gen_dir]
+    args += ["--python_out=" + gen_dir]
 
-  if ctx.executable.grpc_cpp_plugin:
-    args += ["--plugin=protoc-gen-grpc=" + ctx.executable.grpc_cpp_plugin.path]
-    args += ["--grpc_out=" + ctx.var["GENDIR"] + "/" + gen_dir]
+  inputs = srcs + deps
+  if ctx.executable.plugin:
+    plugin = ctx.executable.plugin
+    lang = ctx.attr.plugin_language
+    if not lang and plugin.basename.startswith('protoc-gen-'):
+      lang = plugin.basename[len('protoc-gen-'):]
+    if not lang:
+      fail("cannot infer the target language of plugin", "plugin_language")
+
+    outdir = gen_dir
+    if ctx.attr.plugin_options:
+      outdir = ",".join(ctx.attr.plugin_options) + ":" + outdir
+    args += ["--plugin=protoc-gen-%s=%s" % (lang, plugin.path)]
+    args += ["--%s_out=%s" % (lang, outdir)]
+    inputs += [plugin]
 
   if args:
     ctx.action(
-        inputs=srcs + deps,
+        inputs=inputs,
         outputs=ctx.outputs.outs,
         arguments=args + import_flags + [s.path for s in srcs],
         executable=ctx.executable.protoc,
+        mnemonic="ProtoCompile",
     )
 
   return struct(
@@ -82,22 +118,24 @@ def _proto_gen_impl(ctx):
       ),
   )
 
-_proto_gen = rule(
+proto_gen = rule(
     attrs = {
         "srcs": attr.label_list(allow_files = True),
         "deps": attr.label_list(providers = ["proto"]),
         "includes": attr.string_list(),
         "protoc": attr.label(
-            cfg = HOST_CFG,
+            cfg = "host",
             executable = True,
             single_file = True,
             mandatory = True,
         ),
-        "grpc_cpp_plugin": attr.label(
-            cfg = HOST_CFG,
+        "plugin": attr.label(
+            cfg = "host",
+            allow_files = True,
             executable = True,
-            single_file = True,
         ),
+        "plugin_language": attr.string(),
+        "plugin_options": attr.string_list(),
         "gen_cc": attr.bool(),
         "gen_py": attr.bool(),
         "outs": attr.output_list(),
@@ -105,6 +143,26 @@ _proto_gen = rule(
     output_to_genfiles = True,
     implementation = _proto_gen_impl,
 )
+"""Generates codes from Protocol Buffers definitions.
+
+This rule helps you to implement Skylark macros specific to the target
+language. You should prefer more specific `cc_proto_library `,
+`py_proto_library` and others unless you are adding such wrapper macros.
+
+Args:
+  srcs: Protocol Buffers definition files (.proto) to run the protocol compiler
+    against.
+  deps: a list of dependency labels; must be other proto libraries.
+  includes: a list of include paths to .proto files.
+  protoc: the label of the protocol compiler to generate the sources.
+  plugin: the label of the protocol compiler plugin to be passed to the protocol
+    compiler.
+  plugin_language: the language of the generated sources
+  plugin_options: a list of options to be passed to the plugin
+  gen_cc: generates C++ sources in addition to the ones from the plugin.
+  gen_py: generates Python sources in addition to the ones from the plugin.
+  outs: a list of labels of the expected outputs from the protocol compiler.
+"""
 
 def cc_proto_library(
         name,
@@ -150,7 +208,7 @@ def cc_proto_library(
   if internal_bootstrap_hack:
     # For pre-checked-in generated files, we add the internal_bootstrap_hack
     # which will skip the codegen action.
-    _proto_gen(
+    proto_gen(
         name=name + "_genproto",
         srcs=srcs,
         deps=[s + "_genproto" for s in deps],
@@ -168,15 +226,18 @@ def cc_proto_library(
   if use_grpc_plugin:
     grpc_cpp_plugin = "//external:grpc_cpp_plugin"
 
-  outs = _CcOuts(srcs, use_grpc_plugin)
+  gen_srcs = _CcSrcs(srcs, use_grpc_plugin)
+  gen_hdrs = _CcHdrs(srcs, use_grpc_plugin)
+  outs = gen_srcs + gen_hdrs
 
-  _proto_gen(
+  proto_gen(
       name=name + "_genproto",
       srcs=srcs,
       deps=[s + "_genproto" for s in deps],
       includes=includes,
       protoc=protoc,
-      grpc_cpp_plugin=grpc_cpp_plugin,
+      plugin=grpc_cpp_plugin,
+      plugin_language="grpc",
       gen_cc=1,
       outs=outs,
       visibility=["//visibility:public"],
@@ -189,12 +250,12 @@ def cc_proto_library(
 
   native.cc_library(
       name=name,
-      srcs=outs,
+      srcs=gen_srcs,
+      hdrs=gen_hdrs,
       deps=cc_libs + deps,
       includes=includes,
       **kargs)
 
-
 def internal_gen_well_known_protos_java(srcs):
   """Bazel rule to generate the gen_well_known_protos_java genrule
 
@@ -202,10 +263,11 @@ def internal_gen_well_known_protos_java(srcs):
     srcs: the well known protos
   """
   root = Label("%s//protobuf_java" % (REPOSITORY_NAME)).workspace_root
+  pkg = PACKAGE_NAME + "/" if PACKAGE_NAME else ""
   if root == "":
-    include = " -Isrc "
+    include = " -I%ssrc " % pkg
   else:
-    include = " -I%s/src " % root
+    include = " -I%s/%ssrc " % (root, pkg)
   native.genrule(
     name = "gen_well_known_protos_java",
     srcs = srcs,
@@ -218,7 +280,6 @@ def internal_gen_well_known_protos_java(srcs):
     tools = [":protoc"],
   )
 
-
 def internal_copied_filegroup(name, srcs, strip_prefix, dest, **kwargs):
   """Macro to copy files to a different directory and then create a filegroup.
 
@@ -248,7 +309,6 @@ def internal_copied_filegroup(name, srcs, strip_prefix, dest, **kwargs):
       srcs = outs,
       **kwargs)
 
-
 def py_proto_library(
         name,
         srcs=[],
@@ -258,6 +318,7 @@ def py_proto_library(
         include=None,
         default_runtime="//:protobuf_python",
         protoc="//:protoc",
+        use_grpc_plugin=False,
         **kargs):
   """Bazel rule to create a Python protobuf library from proto source files
 
@@ -277,6 +338,8 @@ def py_proto_library(
     default_runtime: the implicitly default runtime which will be depended on by
         the generated py_library target.
     protoc: the label of the protocol compiler to generate the sources.
+    use_grpc_plugin: a flag to indicate whether to call the Python C++ plugin
+        when processing the proto files.
     **kargs: other keyword arguments that are passed to cc_library.
 
   """
@@ -286,7 +349,14 @@ def py_proto_library(
   if include != None:
     includes = [include]
 
-  _proto_gen(
+  grpc_python_plugin = None
+  if use_grpc_plugin:
+    grpc_python_plugin = "//external:grpc_python_plugin"
+    # Note: Generated grpc code depends on Python grpc module. This dependency
+    # is not explicitly listed in py_libs. Instead, host system is assumed to
+    # have grpc installed.
+
+  proto_gen(
       name=name + "_genproto",
       srcs=srcs,
       deps=[s + "_genproto" for s in deps],
@@ -295,6 +365,8 @@ def py_proto_library(
       gen_py=1,
       outs=outs,
       visibility=["//visibility:public"],
+      plugin=grpc_python_plugin,
+      plugin_language="grpc"
   )
 
   if default_runtime and not default_runtime in py_libs + deps:

protoc-artifacts/README.md

@@ -1,3 +1,14 @@
+# Special notes about building pre-compiled protoc-gen-javalite
+This section is only visible from the javalite branch, which is forked from the
+master branch to provide a stable java lite support. The ``protoc-gen-javalite``
+plugin can only be built and published in this branch.
+
+The sections below in this README are branched from the master, with all the mvn
+commands changed to have an extra ``-f javalite-pom.xml`` parameter to load the
+correct configuration for plugins. The original ``pom.xml`` in this branch is
+renamed to ``protoc-pom.xml`` to prevent the protoc from being accidentally
+published using this branch.
+
 # Build scripts that publish pre-compiled protoc artifacts
 ``protoc`` is the compiler for ``.proto`` files. It generates language bindings
 for the messages and/or RPC services from ``.proto`` files.
@@ -36,7 +47,7 @@ $ ./autogen.sh && ./configure && make
 ## To install artifacts locally
 The following command will install the ``protoc`` artifact to your local Maven repository.
 ```
-$ mvn install
+$ mvn -f javalite-pom.xml install
 ```
 
 ## Cross-compilation
@@ -57,7 +68,7 @@ Frequently used values are:
 For example, MinGW32 only ships with 32-bit compilers, but you can still build
 32-bit protoc under 64-bit Windows, with the following command:
 ```
-$ mvn install -Dos.detected.arch=x86_32
+$ mvn -f javalite-pom.xml install -Dos.detected.arch=x86_32
 ```
 
 ## To push artifacts to Maven Central
@@ -81,7 +92,7 @@ Windows.
 Use the following command to deploy artifacts for the host platform to a
 staging repository.
 ```
-$ mvn clean deploy -P release
+$ mvn -f javalite-pom.xml clean deploy -P release
 ```
 It creates a new staging repository. Go to
 https://oss.sonatype.org/#stagingRepositories and find the repository, usually
@@ -92,7 +103,7 @@ subsequent deployments you will need to provide the repository name that you
 have found in the first deployment so that all artifacts go to the same
 repository:
 ```
-$ mvn clean deploy -P release -Dstaging.repository=comgoogle-123
+$ mvn -f javalite-pom.xml clean deploy -P release -Dstaging.repository=comgoogle-123
 ```
 
 A 32-bit artifact can be deployed from a 64-bit host with

protoc-artifacts/build-protoc.sh

@@ -1,17 +1,30 @@
 #!/bin/bash
 
-# Builds protoc executable into target/protoc.exe
+# Builds protoc executable into target/protoc.exe; optionally build protoc
+# plugins into target/protoc-gen-*.exe
 # To be run from Maven.
-# Usage: build-protoc.sh <OS> <ARCH>
+# Usage: build-protoc.sh <OS> <ARCH> <TARGET>
 # <OS> and <ARCH> are ${os.detected.name} and ${os.detected.arch} from os-maven-plugin
+# <TARGET> can be "protoc" or "protoc-gen-javalite"
 OS=$1
 ARCH=$2
+MAKE_TARGET=$3
 
-if [[ $# < 2 ]]; then
+if [[ $# < 3 ]]; then
   echo "No arguments provided. This script is intended to be run from Maven."
   exit 1
 fi
 
+case $MAKE_TARGET in
+  protoc-gen-javalite)
+    ;;
+  protoc)
+    ;;
+  *)
+    echo "Target ""$TARGET"" invalid."
+    exit 1
+esac
+
 # Under Cygwin, bash doesn't have these in PATH when called from Maven which
 # runs in Windows version of Java.
 export PATH="/bin:/usr/bin:$PATH"
@@ -126,7 +139,7 @@ checkDependencies ()
 }
 ############################################################################
 
-echo "Building protoc, OS=$OS ARCH=$ARCH"
+echo "Building protoc, OS=$OS ARCH=$ARCH TARGET=$TARGET"
 
 # Nested double quotes are unintuitive, but it works.
 cd "$(dirname "$0")"
@@ -134,7 +147,7 @@ cd "$(dirname "$0")"
 WORKING_DIR=$(pwd)
 CONFIGURE_ARGS="--disable-shared"
 
-MAKE_TARGET="protoc"
+TARGET_FILE=target/$MAKE_TARGET.exe
 if [[ "$OS" == windows ]]; then
   MAKE_TARGET="${MAKE_TARGET}.exe"
 fi
@@ -209,12 +222,10 @@ fi
 
 export CXXFLAGS LDFLAGS
 
-TARGET_FILE=target/protoc.exe
-
 cd "$WORKING_DIR"/.. && ./configure $CONFIGURE_ARGS &&
   cd src && make clean && make $MAKE_TARGET &&
   cd "$WORKING_DIR" && mkdir -p target &&
-  (cp ../src/protoc $TARGET_FILE || cp ../src/protoc.exe $TARGET_FILE) ||
+  cp ../src/$MAKE_TARGET $TARGET_FILE ||
   exit 1
 
 if [[ "$OS" == osx ]]; then

protoc-artifacts/javalite-pom.xml

@@ -0,0 +1,134 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project xmlns="http://maven.apache.org/POM/4.0.0"
+  xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+  xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
+  <modelVersion>4.0.0</modelVersion>
+  <parent>
+    <groupId>com.google</groupId>
+    <artifactId>google</artifactId>
+    <version>1</version>
+  </parent>
+  <groupId>com.google.protobuf</groupId>
+  <artifactId>protoc-gen-javalite</artifactId>
+  <version>3.0.0</version>
+  <packaging>pom</packaging>
+  <name>Protobuf Java Lite Compiler Plugin</name>
+  <description>
+    The Protobuf Compiler (protoc) compiler plugin to generate Java Lite files.
+  </description>
+  <inceptionYear>2008</inceptionYear>
+  <url>https://developers.google.com/protocol-buffers/</url>
+  <licenses>
+    <license>
+      <name>New BSD license</name>
+      <url>http://www.opensource.org/licenses/bsd-license.php</url>
+      <distribution>repo</distribution>
+    </license>
+  </licenses>
+  <scm>
+    <url>https://github.com/google/protobuf</url>
+    <connection>
+      scm:git:https://github.com/google/protobuf.git
+    </connection>
+  </scm>
+  <build>
+    <extensions>
+      <extension>
+        <groupId>kr.motd.maven</groupId>
+        <artifactId>os-maven-plugin</artifactId>
+        <version>1.2.3.Final</version>
+      </extension>
+    </extensions>
+    <plugins>
+      <plugin>
+        <groupId>org.codehaus.mojo</groupId>
+        <artifactId>exec-maven-plugin</artifactId>
+        <version>1.1.1</version>
+        <executions>
+          <execution>
+            <phase>compile</phase>
+            <goals>
+              <goal>exec</goal>
+            </goals>
+          </execution>
+        </executions>
+        <configuration>
+          <executable>bash</executable>
+          <arguments>
+            <argument>build-protoc.sh</argument>
+            <argument>${os.detected.name}</argument>
+            <argument>${os.detected.arch}</argument>
+            <argument>protoc-gen-javalite</argument>
+          </arguments>
+        </configuration>
+      </plugin>
+      <plugin>
+        <groupId>org.codehaus.mojo</groupId>
+        <artifactId>build-helper-maven-plugin</artifactId>
+        <version>1.8</version>
+        <executions>
+          <execution>
+            <id>attach-artifacts</id>
+            <phase>package</phase>
+            <goals>
+              <goal>attach-artifact</goal>
+            </goals>
+            <configuration>
+              <artifacts>
+                <artifact>
+                  <file>${basedir}/target/protoc-gen-javalite.exe</file>
+                  <classifier>${os.detected.name}-${os.detected.arch}</classifier>
+                  <type>exe</type>
+                </artifact>
+              </artifacts>
+            </configuration>
+          </execution>
+        </executions>
+      </plugin>
+    </plugins>
+  </build>
+  <profiles>
+    <profile>
+      <id>release</id>
+      <properties>
+        <!-- Specify the staging repository to deploy to. This can be left
+             empty for the first deployment, and Sonatype will create one. For
+             subsequent deployments it should be set to what Sonatype has
+             created, so that all deployments will go to the same repository.
+             -->
+        <staging.repository></staging.repository>
+      </properties>
+      <build>
+        <plugins>
+          <plugin>
+            <groupId>org.apache.maven.plugins</groupId>
+            <artifactId>maven-gpg-plugin</artifactId>
+            <version>1.5</version>
+            <executions>
+              <execution>
+                <id>sign-artifacts</id>
+                <phase>verify</phase>
+                <goals>
+                  <goal>sign</goal>
+                </goals>
+              </execution>
+            </executions>
+          </plugin>
+          <plugin>
+            <groupId>org.sonatype.plugins</groupId>
+            <artifactId>nexus-staging-maven-plugin</artifactId>
+            <version>1.6.3</version>
+            <extensions>true</extensions>
+            <configuration>
+               <serverId>sonatype-nexus-staging</serverId>
+               <nexusUrl>https://oss.sonatype.org/</nexusUrl>
+               <skipStagingRepositoryClose>true</skipStagingRepositoryClose>
+               <autoReleaseAfterClose>false</autoReleaseAfterClose>
+               <stagingRepositoryId>${staging.repository}</stagingRepositoryId>
+            </configuration>
+          </plugin>
+        </plugins>
+      </build>
+    </profile>
+  </profiles>
+</project>

protoc-artifacts/protoc-pom.xml

@@ -59,6 +59,7 @@
             <argument>build-protoc.sh</argument>
             <argument>${os.detected.name}</argument>
             <argument>${os.detected.arch}</argument>
+            <argument>protoc</argument>
           </arguments>
         </configuration>
       </plugin>

src/Makefile.am

@@ -472,9 +472,11 @@ libprotoc_la_SOURCES =                                         \
   google/protobuf/compiler/csharp/csharp_wrapper_field.cc      \
   google/protobuf/compiler/csharp/csharp_wrapper_field.h
 
-bin_PROGRAMS = protoc
+bin_PROGRAMS = protoc protoc-gen-javalite
 protoc_LDADD = $(PTHREAD_LIBS) libprotobuf.la libprotoc.la
 protoc_SOURCES = google/protobuf/compiler/main.cc
+protoc_gen_javalite_LDADD = $(PTHREAD_LIBS) libprotobuf.la libprotoc.la
+protoc_gen_javalite_SOURCES = google/protobuf/compiler/java/java_lite_main.cc
 
 # Tests ==============================================================
 
@@ -677,6 +679,7 @@ COMMON_TEST_SOURCES =                                          \
 
 check_PROGRAMS = protoc protobuf-test protobuf-lazy-descriptor-test \
                  protobuf-lite-test test_plugin protobuf-lite-arena-test \
+								 protoc-gen-javalite \
                  $(GZCHECKPROGRAMS)
 protobuf_test_LDADD = $(PTHREAD_LIBS) libprotobuf.la libprotoc.la \
                       ../gmock/gtest/lib/libgtest.la              \

src/google/protobuf/compiler/java/java_lite_main.cc

@@ -0,0 +1,34 @@
+#include <google/protobuf/compiler/code_generator.h>
+#include <google/protobuf/compiler/java/java_generator.h>
+#include <google/protobuf/compiler/plugin.h>
+
+namespace google {
+namespace protobuf {
+namespace compiler {
+namespace java {
+
+class JavaLiteGenerator : public CodeGenerator {
+ public:
+  JavaLiteGenerator() {}
+  ~JavaLiteGenerator() {}
+  bool Generate(const FileDescriptor* file,
+                const string& parameter,
+                GeneratorContext* context,
+                string* error) const {
+    // Only pass 'lite' as the generator parameter.
+    return generator_.Generate(file, "lite", context, error);
+  }
+ private:
+  JavaGenerator generator_;
+  GOOGLE_DISALLOW_EVIL_CONSTRUCTORS(JavaLiteGenerator);
+};
+
+}  // namespace java
+}  // namespace compiler
+}  // namespace protobuf
+}  // namespace google
+
+int main(int argc, char* argv[]) {
+  google::protobuf::compiler::java::JavaLiteGenerator generator;
+  return google::protobuf::compiler::PluginMain(argc, argv, &generator);
+}

src/google/protobuf/compiler/java/java_message.cc

@@ -1431,6 +1431,7 @@ void ImmutableMessageGenerator::GenerateAnyMethods(io::Printer* printer) {
     "\n"
     "private volatile com.google.protobuf.Message cachedUnpackValue;\n"
     "\n"
+    "@java.lang.SuppressWarnings(\"unchecked\")\n"
     "public <T extends com.google.protobuf.Message> T unpack(\n"
     "    java.lang.Class<T> clazz)\n"
     "    throws com.google.protobuf.InvalidProtocolBufferException {\n"

src/google/protobuf/compiler/java/java_message_lite.cc

@@ -339,6 +339,7 @@ void ImmutableMessageLiteGenerator::Generate(io::Printer* printer) {
   }
 
   printer->Print(
+    "@java.lang.SuppressWarnings(\"unchecked\")\n"
     "protected final Object dynamicMethod(\n"
     "    com.google.protobuf.GeneratedMessageLite.MethodToInvoke method,\n"
     "    Object arg0, Object arg1) {\n"
@@ -391,6 +392,7 @@ void ImmutableMessageLiteGenerator::Generate(io::Printer* printer) {
 
   printer->Print(
     "}\n"
+    "// fall through\n"
     "case GET_DEFAULT_INSTANCE: {\n"
     "  return DEFAULT_INSTANCE;\n"
     "}\n"