Merge pull request #146 from isaiah/jruby

protobuf support for jruby

ruby/.gitignore

+*.bundle
+tags
+.idea/
+lib/google/protobuf_java.jar
+protobuf-jruby.iml
+target/

ruby/Gemfile

+source 'https://rubygems.org'
+
+gemspec

ruby/Gemfile.lock

+PATH
+  remote: .
+  specs:
+    google-protobuf (3.0.0.alpha.2)
+
+GEM
+  remote: https://rubygems.org/
+  specs:
+    power_assert (0.2.2)
+    rake (10.4.2)
+    rake-compiler (0.9.5)
+      rake
+    rubygems-tasks (0.2.4)
+    test-unit (3.0.9)
+      power_assert
+
+PLATFORMS
+  java
+  ruby
+
+DEPENDENCIES
+  google-protobuf!
+  rake-compiler
+  rubygems-tasks
+  test-unit

ruby/README.md

@@ -60,15 +60,28 @@ To build this Ruby extension, you will need:
 * Ruby development headers
 * a C compiler
 
-First, install the required Ruby gems:
+To Build the JRuby extension, you will need:
 
-    $ sudo gem install bundler rake rake-compiler rspec rubygems-tasks
+* Maven
+* The latest version of the protobuf java library
+* Install JRuby via rbenv or RVM
+
+First switch to the desired platform with rbenv or RVM.
+
+Then install the required Ruby gems:
+
+    $ gem install bundler
+    $ bundle
 
 Then build the Gem:
 
     $ rake gem
     $ gem install pkg/protobuf-$VERSION.gem
 
+To run the specs:
+
+    $ rake test
+
 This gem includes the upb parsing and serialization library as a single-file
 amalgamation. It is up-to-date with upb git commit
 `535bc2fe2f2b467f59347ffc9449e11e47791257`.

ruby/Rakefile

-require "rake/extensiontask"
+require "rubygems"
+require "rubygems/package_task"
+require "rake/extensiontask" unless RUBY_PLATFORM == "java"
 require "rake/testtask"
 
 spec = Gem::Specification.load("google-protobuf.gemspec")
 
-Rake::ExtensionTask.new("protobuf_c", spec) do |ext|
-  ext.ext_dir = "ext/google/protobuf_c"
-  ext.lib_dir = "lib/google"
-end
+if RUBY_PLATFORM == "java"
+  task :clean do
+    system("mvn clean")
+  end
 
-Rake::TestTask.new(:test => :build) do |t|
-  t.test_files = FileList["tests/*.rb"]
+  task :compile do
+    system("mvn package")
+  end
+else
+  Rake::ExtensionTask.new("protobuf_c", spec) do |ext|
+    ext.ext_dir = "ext/google/protobuf_c"
+    ext.lib_dir = "lib/google"
+  end
 end
 
 Gem::PackageTask.new(spec) do |pkg|
 end
 
+Rake::TestTask.new(:test => :build) do |t|
+  t.test_files = FileList["tests/*.rb"]
+end
+
 task :build => [:clean, :compile]
 task :default => [:build]
 

ruby/google-protobuf.gemspec

-class << Gem::Specification
-  def find_c_source(dir)
-    `cd #{dir}; git ls-files "*.c" "*.h" extconf.rb Makefile`.split
-    .map{|f| "#{dir}/#{f}"}
-  end
-end
-
 Gem::Specification.new do |s|
   s.name        = "google-protobuf"
   s.version     = "3.0.0.alpha.3.0.pre"
@@ -14,11 +7,17 @@ Gem::Specification.new do |s|
   s.authors     = ["Protobuf Authors"]
   s.email       = "protobuf@googlegroups.com"
   s.require_paths = ["lib"]
-  s.extensions  = ["ext/google/protobuf_c/extconf.rb"]
-  s.files       = ["lib/google/protobuf.rb"] +
-                  # extension C source
-                  find_c_source("ext/google/protobuf_c")
-  s.test_files = ["tests/basic.rb",
-		  "tests/stress.rb",
-		  "tests/generated_code_test.rb"]
+  s.files       = ["lib/google/protobuf.rb"]
+  unless RUBY_PLATFORM == "java"
+    s.files     += `git ls-files "*.c" "*.h" extconf.rb Makefile`.split
+    s.extensions= ["ext/google/protobuf_c/extconf.rb"]
+  else
+    s.files     += ["lib/google/protobuf_java.jar"]
+  end
+  s.test_files  = ["tests/basic.rb",
+                  "tests/stress.rb",
+                  "tests/generated_code_test.rb"]
+  s.add_development_dependency "rake-compiler"
+  s.add_development_dependency "test-unit"
+  s.add_development_dependency "rubygems-tasks"
 end

ruby/lib/google/protobuf.rb

@@ -28,4 +28,9 @@
 # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
-require 'google/protobuf_c'
+if RUBY_PLATFORM == "java"
+  require 'json'
+  require 'google/protobuf_java'
+else
+  require 'google/protobuf_c'
+end

ruby/pom.xml

+<?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/xsd/maven-4.0.0.xsd">
+    <modelVersion>4.0.0</modelVersion>
+    <parent>
+      <groupId>com.google</groupId>
+      <artifactId>google</artifactId>
+      <version>1</version>
+    </parent>
+
+    <groupId>com.google.protobuf.jruby</groupId>
+    <artifactId>protobuf-jruby</artifactId>
+    <version>1.0-SNAPSHOT</version>
+    <name>Protocol Buffer JRuby native extension</name>
+    <description>
+      Protocol Buffers are a way of encoding structured data in an efficient yet
+      extensible format.
+    </description>
+    <inceptionYear>2014</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>
+
+    <properties>
+        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
+        <ruby.sources>lib/google</ruby.sources>
+        <jar.finalName>protobuf_java</jar.finalName>
+    </properties>
+    <build>
+        <plugins>
+            <plugin>
+                <groupId>org.apache.maven.plugins</groupId>
+                <artifactId>maven-assembly-plugin</artifactId>
+                <configuration>
+                    <finalName>${jar.finalName}</finalName>
+                    <outputDirectory>${ruby.sources}</outputDirectory>
+                    <appendAssemblyId>false</appendAssemblyId>
+                    <descriptorRefs>
+                        <descriptorRef>jar-with-dependencies</descriptorRef>
+                    </descriptorRefs>
+                </configuration>
+                <executions>
+                    <execution>
+                        <id>make-assembly</id>
+                        <phase>package</phase>
+                        <goals>
+                            <goal>single</goal>
+                        </goals>
+                    </execution>
+                </executions>
+            </plugin>
+        </plugins>
+    </build>
+    <dependencies>
+        <dependency>
+            <groupId>com.fasterxml.jackson.core</groupId>
+            <artifactId>jackson-core</artifactId>
+            <version>2.4.3</version>
+        </dependency>
+        <dependency>
+            <groupId>org.jruby</groupId>
+            <artifactId>jruby-complete</artifactId>
+            <version>1.7.13</version>
+            <scope>provided</scope>
+        </dependency>
+        <dependency>
+            <groupId>com.google.protobuf</groupId>
+            <artifactId>protobuf-java</artifactId>
+            <version>3.0.0-pre</version>
+        </dependency>
+    </dependencies>
+</project>

ruby/src/main/java/com/google/protobuf/jruby/RubyBuilder.java

+/*
+ * Protocol Buffers - Google's data interchange format
+ * Copyright 2014 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.
+ *     * Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following disclaimer
+ * in the documentation and/or other materials provided with the
+ * distribution.
+ *     * Neither the name of Google Inc. nor the names of its
+ * contributors may be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+package com.google.protobuf.jruby;
+
+import org.jruby.*;
+import org.jruby.anno.JRubyClass;
+import org.jruby.anno.JRubyMethod;
+import org.jruby.runtime.*;
+import org.jruby.runtime.builtin.IRubyObject;
+
+@JRubyClass(name = "Builder")
+public class RubyBuilder extends RubyObject {
+    public static void createRubyBuilder(Ruby runtime) {
+        RubyModule protobuf = runtime.getClassFromPath("Google::Protobuf");
+        RubyClass cBuilder = protobuf.defineClassUnder("Builder", runtime.getObject(), new ObjectAllocator() {
+            @Override
+            public IRubyObject allocate(Ruby runtime, RubyClass klazz) {
+                return new RubyBuilder(runtime, klazz);
+            }
+        });
+        cBuilder.defineAnnotatedMethods(RubyBuilder.class);
+    }
+
+    public RubyBuilder(Ruby runtime, RubyClass metaClass) {
+        super(runtime, metaClass);
+        this.cDescriptor = (RubyClass) runtime.getClassFromPath("Google::Protobuf::Descriptor");
+        this.cEnumDescriptor = (RubyClass) runtime.getClassFromPath("Google::Protobuf::EnumDescriptor");
+        this.cMessageBuilderContext = (RubyClass) runtime.getClassFromPath("Google::Protobuf::MessageBuilderContext");
+        this.cEnumBuilderContext = (RubyClass) runtime.getClassFromPath("Google::Protobuf::EnumBuilderContext");
+    }
+
+    /*
+     * call-seq:
+     *     Builder.new => builder
+     *
+     * Creates a new Builder. A Builder can accumulate a set of new message and enum
+     * descriptors and atomically register them into a pool in a way that allows for
+     * (co)recursive type references.
+     */
+    @JRubyMethod
+    public IRubyObject initialize(ThreadContext context) {
+        Ruby runtime = context.runtime;
+        this.pendingList = runtime.newArray();
+        return this;
+    }
+
+    /*
+     * call-seq:
+     *     Builder.add_message(name, &block)
+     *
+     * Creates a new, empty descriptor with the given name, and invokes the block in
+     * the context of a MessageBuilderContext on that descriptor. The block can then
+     * call, e.g., MessageBuilderContext#optional and MessageBuilderContext#repeated
+     * methods to define the message fields.
+     *
+     * This is the recommended, idiomatic way to build message definitions.
+     */
+    @JRubyMethod(name = "add_message")
+    public IRubyObject addMessage(ThreadContext context, IRubyObject name, Block block) {
+        RubyDescriptor msgdef = (RubyDescriptor) cDescriptor.newInstance(context, Block.NULL_BLOCK);
+        IRubyObject ctx = cMessageBuilderContext.newInstance(context, msgdef, this, Block.NULL_BLOCK);
+        msgdef.setName(context, name);
+        if (block.isGiven()) {
+            if (block.arity() == Arity.ONE_ARGUMENT) {
+                block.yield(context, ctx);
+            } else {
+                Binding binding = block.getBinding();
+                binding.setSelf(ctx);
+                block.yieldSpecific(context);
+            }
+        }
+        this.pendingList.add(msgdef);
+        return context.runtime.getNil();
+    }
+
+    /*
+     * call-seq:
+     *     Builder.add_enum(name, &block)
+     *
+     * Creates a new, empty enum descriptor with the given name, and invokes the block in
+     * the context of an EnumBuilderContext on that descriptor. The block can then
+     * call EnumBuilderContext#add_value to define the enum values.
+     *
+     * This is the recommended, idiomatic way to build enum definitions.
+     */
+    @JRubyMethod(name = "add_enum")
+    public IRubyObject addEnum(ThreadContext context, IRubyObject name, Block block) {
+        RubyEnumDescriptor enumDef = (RubyEnumDescriptor) cEnumDescriptor.newInstance(context, Block.NULL_BLOCK);
+        IRubyObject ctx = cEnumBuilderContext.newInstance(context, enumDef, Block.NULL_BLOCK);
+        enumDef.setName(context, name);
+
+        if (block.isGiven()) {
+            if (block.arity() == Arity.ONE_ARGUMENT) {
+                block.yield(context, ctx);
+            } else {
+                Binding binding = block.getBinding();
+                binding.setSelf(ctx);
+                block.yieldSpecific(context);
+            }
+        }
+
+        this.pendingList.add(enumDef);
+        return context.runtime.getNil();
+    }
+
+    /*
+     * call-seq:
+     *     Builder.finalize_to_pool(pool)
+     *
+     * Adds all accumulated message and enum descriptors created in this builder
+     * context to the given pool. The operation occurs atomically, and all
+     * descriptors can refer to each other (including in cycles). This is the only
+     * way to build (co)recursive message definitions.
+     *
+     * This method is usually called automatically by DescriptorPool#build after it
+     * invokes the given user block in the context of the builder. The user should
+     * not normally need to call this manually because a Builder is not normally
+     * created manually.
+     */
+    @JRubyMethod(name = "finalize_to_pool")
+    public IRubyObject finalizeToPool(ThreadContext context, IRubyObject rbPool) {
+        RubyDescriptorPool pool = (RubyDescriptorPool) rbPool;
+        for (int i = 0; i < this.pendingList.size(); i++) {
+            IRubyObject defRb = this.pendingList.entry(i);
+            if (defRb instanceof RubyDescriptor) {
+                pool.addToSymtab(context, (RubyDescriptor) defRb);
+            } else {
+                pool.addToSymtab(context, (RubyEnumDescriptor) defRb);
+            }
+        }
+        this.pendingList = context.runtime.newArray();
+        return context.runtime.getNil();
+    }
+
+    protected RubyArray pendingList;
+    private RubyClass cDescriptor, cEnumDescriptor, cMessageBuilderContext, cEnumBuilderContext;
+}

ruby/src/main/java/com/google/protobuf/jruby/RubyDescriptorPool.java

+/*
+ * Protocol Buffers - Google's data interchange format
+ * Copyright 2014 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.
+ *     * Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following disclaimer
+ * in the documentation and/or other materials provided with the
+ * distribution.
+ *     * Neither the name of Google Inc. nor the names of its
+ * contributors may be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+package com.google.protobuf.jruby;
+
+import com.google.protobuf.DescriptorProtos;
+import com.google.protobuf.Descriptors;
+import org.jruby.*;
+import org.jruby.anno.JRubyClass;
+import org.jruby.anno.JRubyMethod;
+import org.jruby.runtime.*;
+import org.jruby.runtime.builtin.IRubyObject;
+
+import java.util.HashMap;
+import java.util.Map;
+
+@JRubyClass(name = "DescriptorPool")
+public class RubyDescriptorPool extends RubyObject {
+    public static void createRubyDescriptorPool(Ruby runtime) {
+        RubyModule protobuf = runtime.getClassFromPath("Google::Protobuf");
+        RubyClass cDescriptorPool = protobuf.defineClassUnder("DescriptorPool", runtime.getObject(), new ObjectAllocator() {
+            @Override
+            public IRubyObject allocate(Ruby runtime, RubyClass klazz) {
+                return new RubyDescriptorPool(runtime, klazz);
+            }
+        });
+
+        cDescriptorPool.defineAnnotatedMethods(RubyDescriptorPool.class);
+        descriptorPool = (RubyDescriptorPool) cDescriptorPool.newInstance(runtime.getCurrentContext(), Block.NULL_BLOCK);
+    }
+
+    public RubyDescriptorPool(Ruby ruby, RubyClass klazz) {
+        super(ruby, klazz);
+    }
+
+    @JRubyMethod
+    public IRubyObject initialize(ThreadContext context) {
+        this.symtab = new HashMap<IRubyObject, IRubyObject>();
+        this.cBuilder = (RubyClass) context.runtime.getClassFromPath("Google::Protobuf::Builder");
+        this.builder = DescriptorProtos.FileDescriptorProto.newBuilder();
+        return this;
+    }
+
+    @JRubyMethod
+    public IRubyObject build(ThreadContext context, Block block) {
+        RubyBuilder ctx = (RubyBuilder) cBuilder.newInstance(context, Block.NULL_BLOCK);
+        if (block.arity() == Arity.ONE_ARGUMENT) {
+            block.yield(context, ctx);
+        } else {
+            Binding binding = block.getBinding();
+            binding.setSelf(ctx);
+            block.yieldSpecific(context);
+        }
+        ctx.finalizeToPool(context, this);
+        buildFileDescriptor(context);
+        return context.runtime.getNil();
+    }
+
+    @JRubyMethod
+    public IRubyObject lookup(ThreadContext context, IRubyObject name) {
+        IRubyObject descriptor = this.symtab.get(name);
+        if (descriptor == null) {
+            return context.runtime.getNil();
+        }
+        return descriptor;
+    }
+
+    /*
+     * call-seq:
+     *     DescriptorPool.generated_pool => descriptor_pool
+     *
+     * Class method that returns the global DescriptorPool. This is a singleton into
+     * which generated-code message and enum types are registered. The user may also
+     * register types in this pool for convenience so that they do not have to hold
+     * a reference to a private pool instance.
+     */
+    @JRubyMethod(meta = true, name = "generated_pool")
+    public static IRubyObject generatedPool(ThreadContext context, IRubyObject recv) {
+        return descriptorPool;
+    }
+
+    protected void addToSymtab(ThreadContext context, RubyDescriptor def) {
+        symtab.put(def.getName(context), def);
+        this.builder.addMessageType(def.getBuilder());
+    }
+
+    protected void addToSymtab(ThreadContext context, RubyEnumDescriptor def) {
+        symtab.put(def.getName(context), def);
+        this.builder.addEnumType(def.getBuilder());
+    }
+
+    private void buildFileDescriptor(ThreadContext context) {
+        Ruby runtime = context.runtime;
+        try {
+            this.builder.setSyntax("proto3");
+            final Descriptors.FileDescriptor fileDescriptor = Descriptors.FileDescriptor.buildFrom(
+                    this.builder.build(), new Descriptors.FileDescriptor[]{});
+
+            for (Descriptors.EnumDescriptor enumDescriptor : fileDescriptor.getEnumTypes()) {
+                String enumName = Utils.unescapeIdentifier(enumDescriptor.getName());
+                if (enumDescriptor.findValueByNumber(0) == null) {
+                    throw runtime.newTypeError("Enum definition " + enumName
+                            + " does not contain a value for '0'");
+                }
+                ((RubyEnumDescriptor) symtab.get(runtime.newString(enumName)))
+                        .setDescriptor(enumDescriptor);
+            }
+            for (Descriptors.Descriptor descriptor : fileDescriptor.getMessageTypes()) {
+                RubyDescriptor rubyDescriptor = ((RubyDescriptor)
+                        symtab.get(runtime.newString(Utils.unescapeIdentifier(descriptor.getName()))));
+                for (Descriptors.FieldDescriptor fieldDescriptor : descriptor.getFields()) {
+                    if (fieldDescriptor.isRequired()) {
+                        throw runtime.newTypeError("Required fields are unsupported in proto3");
+                    }
+                    RubyFieldDescriptor rubyFieldDescriptor = rubyDescriptor.lookup(fieldDescriptor.getName());
+                    rubyFieldDescriptor.setFieldDef(fieldDescriptor);
+                    if (fieldDescriptor.getType() == Descriptors.FieldDescriptor.Type.MESSAGE) {
+                        RubyDescriptor subType = (RubyDescriptor) lookup(context,
+                                runtime.newString(Utils.unescapeIdentifier(fieldDescriptor.getMessageType().getName())));
+                        rubyFieldDescriptor.setSubType(subType);
+                    }
+                    if (fieldDescriptor.getType() == Descriptors.FieldDescriptor.Type.ENUM) {
+                        RubyEnumDescriptor subType = (RubyEnumDescriptor) lookup(context,
+                                runtime.newString(Utils.unescapeIdentifier(fieldDescriptor.getEnumType().getName())));
+                        rubyFieldDescriptor.setSubType(subType);
+                    }
+                }
+                rubyDescriptor.setDescriptor(descriptor);
+            }
+        } catch (Descriptors.DescriptorValidationException e) {
+            throw runtime.newRuntimeError(e.getMessage());
+        }
+    }
+
+    private static RubyDescriptorPool descriptorPool;
+
+    private RubyClass cBuilder;
+    private Map<IRubyObject, IRubyObject> symtab;
+    private DescriptorProtos.FileDescriptorProto.Builder builder;
+}

ruby/src/main/java/com/google/protobuf/jruby/RubyEnum.java

+/*
+ * Protocol Buffers - Google's data interchange format
+ * Copyright 2014 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.
+ *     * Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following disclaimer
+ * in the documentation and/or other materials provided with the
+ * distribution.
+ *     * Neither the name of Google Inc. nor the names of its
+ * contributors may be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+package com.google.protobuf.jruby;
+
+import com.google.protobuf.Descriptors;
+import org.jruby.RubyModule;
+import org.jruby.RubyNumeric;
+import org.jruby.anno.JRubyMethod;
+import org.jruby.runtime.ThreadContext;
+import org.jruby.runtime.builtin.IRubyObject;
+
+public class RubyEnum {
+    /*
+     * call-seq:
+     *     Enum.lookup(number) => name
+     *
+     * This module method, provided on each generated enum module, looks up an enum
+     * value by number and returns its name as a Ruby symbol, or nil if not found.
+     */
+    @JRubyMethod(meta = true)
+    public static IRubyObject lookup(ThreadContext context, IRubyObject recv, IRubyObject number) {
+        RubyEnumDescriptor rubyEnumDescriptorescriptor = (RubyEnumDescriptor) getDescriptor(context, recv);
+        Descriptors.EnumDescriptor descriptor = rubyEnumDescriptorescriptor.getDescriptor();
+        Descriptors.EnumValueDescriptor value = descriptor.findValueByNumber(RubyNumeric.num2int(number));
+        if (value == null) return context.runtime.getNil();
+        return context.runtime.newSymbol(value.getName());
+    }
+
+    /*
+     * call-seq:
+     *     Enum.resolve(name) => number
+     *
+     * This module method, provided on each generated enum module, looks up an enum
+     * value by name (as a Ruby symbol) and returns its name, or nil if not found.
+     */
+    @JRubyMethod(meta = true)
+    public static IRubyObject resolve(ThreadContext context, IRubyObject recv, IRubyObject name) {
+        RubyEnumDescriptor rubyEnumDescriptorescriptor = (RubyEnumDescriptor) getDescriptor(context, recv);
+        Descriptors.EnumDescriptor descriptor = rubyEnumDescriptorescriptor.getDescriptor();
+        Descriptors.EnumValueDescriptor value = descriptor.findValueByName(name.asJavaString());
+        if (value == null) return context.runtime.getNil();
+        return context.runtime.newFixnum(value.getNumber());
+    }
+
+    /*
+     * call-seq:
+     *     Enum.descriptor
+     *
+     * This module method, provided on each generated enum module, returns the
+     * EnumDescriptor corresponding to this enum type.
+     */
+    @JRubyMethod(meta = true, name = "descriptor")
+    public static IRubyObject getDescriptor(ThreadContext context, IRubyObject recv) {
+        return ((RubyModule) recv).getInstanceVariable(Utils.DESCRIPTOR_INSTANCE_VAR);
+    }
+}

ruby/src/main/java/com/google/protobuf/jruby/RubyEnumBuilderContext.java

+/*
+ * Protocol Buffers - Google's data interchange format
+ * Copyright 2014 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.
+ *     * Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following disclaimer
+ * in the documentation and/or other materials provided with the
+ * distribution.
+ *     * Neither the name of Google Inc. nor the names of its
+ * contributors may be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+package com.google.protobuf.jruby;
+
+import org.jruby.Ruby;
+import org.jruby.RubyClass;
+import org.jruby.RubyModule;
+import org.jruby.RubyObject;
+import org.jruby.anno.JRubyClass;
+import org.jruby.anno.JRubyMethod;
+import org.jruby.runtime.ObjectAllocator;
+import org.jruby.runtime.ThreadContext;
+import org.jruby.runtime.builtin.IRubyObject;
+
+@JRubyClass(name = "EnumBuilderContext")
+public class RubyEnumBuilderContext extends RubyObject {
+    public static void createRubyEnumBuilderContext(Ruby runtime) {
+        RubyModule protobuf = runtime.getClassFromPath("Google::Protobuf");
+        RubyClass cMessageBuilderContext = protobuf.defineClassUnder("EnumBuilderContext", runtime.getObject(), new ObjectAllocator() {
+            @Override
+            public IRubyObject allocate(Ruby runtime, RubyClass klazz) {
+                return new RubyEnumBuilderContext(runtime, klazz);
+            }
+        });
+        cMessageBuilderContext.defineAnnotatedMethods(RubyEnumBuilderContext.class);
+    }
+
+    public RubyEnumBuilderContext(Ruby ruby, RubyClass klazz) {
+        super(ruby, klazz);
+    }
+
+    @JRubyMethod
+    public IRubyObject initialize(ThreadContext context, IRubyObject enumDescriptor) {
+        this.enumDescriptor = (RubyEnumDescriptor) enumDescriptor;
+        return this;
+    }
+
+    /*
+     * call-seq:
+     *     EnumBuilder.add_value(name, number)
+     *
+     * Adds the given name => number mapping to the enum type. Name must be a Ruby
+     * symbol.
+     */
+    @JRubyMethod
+    public IRubyObject value(ThreadContext context, IRubyObject name, IRubyObject number) {
+        this.enumDescriptor.addValue(context, name, number);
+        return context.runtime.getNil();
+    }
+
+    private RubyEnumDescriptor enumDescriptor;
+}

ruby/src/main/java/com/google/protobuf/jruby/RubyEnumDescriptor.java

+/*
+ * Protocol Buffers - Google's data interchange format
+ * Copyright 2014 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.
+ *     * Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following disclaimer
+ * in the documentation and/or other materials provided with the
+ * distribution.
+ *     * Neither the name of Google Inc. nor the names of its
+ * contributors may be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+package com.google.protobuf.jruby;
+
+import com.google.protobuf.DescriptorProtos;
+import com.google.protobuf.Descriptors;
+import org.jruby.Ruby;
+import org.jruby.RubyClass;
+import org.jruby.RubyModule;
+import org.jruby.RubyObject;
+import org.jruby.RubyNumeric;
+import org.jruby.anno.JRubyClass;
+import org.jruby.anno.JRubyMethod;
+import org.jruby.runtime.Block;
+import org.jruby.runtime.ObjectAllocator;
+import org.jruby.runtime.ThreadContext;
+import org.jruby.runtime.builtin.IRubyObject;
+
+@JRubyClass(name = "EnumDescriptor", include = "Enumerable")
+public class RubyEnumDescriptor extends RubyObject {
+    public static void createRubyEnumDescriptor(Ruby runtime) {
+        RubyModule mProtobuf = runtime.getClassFromPath("Google::Protobuf");
+        RubyClass cEnumDescriptor = mProtobuf.defineClassUnder("EnumDescriptor", runtime.getObject(), new ObjectAllocator() {
+            @Override
+            public IRubyObject allocate(Ruby runtime, RubyClass klazz) {
+                return new RubyEnumDescriptor(runtime, klazz);
+            }
+        });
+        cEnumDescriptor.includeModule(runtime.getEnumerable());
+        cEnumDescriptor.defineAnnotatedMethods(RubyEnumDescriptor.class);
+    }
+
+    public RubyEnumDescriptor(Ruby runtime, RubyClass klazz) {
+        super(runtime, klazz);
+    }
+
+    /*
+     * call-seq:
+     *     EnumDescriptor.new => enum_descriptor
+     *
+     * Creates a new, empty, enum descriptor. Must be added to a pool before the
+     * enum type can be used. The enum type may only be modified prior to adding to
+     * a pool.
+     */
+    @JRubyMethod
+    public IRubyObject initialize(ThreadContext context) {
+        this.builder = DescriptorProtos.EnumDescriptorProto.newBuilder();
+        return this;
+    }
+
+    /*
+     * call-seq:
+     *     EnumDescriptor.name => name
+     *
+     * Returns the name of this enum type.
+     */
+    @JRubyMethod(name = "name")
+    public IRubyObject getName(ThreadContext context) {
+        return this.name;
+    }
+
+    /*
+     * call-seq:
+     *     EnumDescriptor.name = name
+     *
+     * Sets the name of this enum type. Cannot be called if the enum type has
+     * already been added to a pool.
+     */
+    @JRubyMethod(name = "name=")
+    public IRubyObject setName(ThreadContext context, IRubyObject name) {
+        this.name = name;
+        this.builder.setName(Utils.escapeIdentifier(name.asJavaString()));
+        return context.runtime.getNil();
+    }
+
+    /*
+     * call-seq:
+     *     EnumDescriptor.add_value(key, value)
+     *
+     * Adds a new key => value mapping to this enum type. Key must be given as a
+     * Ruby symbol. Cannot be called if the enum type has already been added to a
+     * pool. Will raise an exception if the key or value is already in use.
+     */
+    @JRubyMethod(name = "add_value")
+    public IRubyObject addValue(ThreadContext context, IRubyObject name, IRubyObject number) {
+        DescriptorProtos.EnumValueDescriptorProto.Builder valueBuilder = DescriptorProtos.EnumValueDescriptorProto.newBuilder();
+        valueBuilder.setName(name.asJavaString());
+        valueBuilder.setNumber(RubyNumeric.num2int(number));
+        this.builder.addValue(valueBuilder);
+        return context.runtime.getNil();
+    }
+
+    /*
+     * call-seq:
+     *     EnumDescriptor.each(&block)
+     *
+     * Iterates over key => value mappings in this enum's definition, yielding to
+     * the block with (key, value) arguments for each one.
+     */
+    @JRubyMethod
+    public IRubyObject each(ThreadContext context, Block block) {
+        Ruby runtime = context.runtime;
+        for (Descriptors.EnumValueDescriptor enumValueDescriptor : descriptor.getValues()) {
+            block.yield(context, runtime.newArray(runtime.newSymbol(enumValueDescriptor.getName()),
+                    runtime.newFixnum(enumValueDescriptor.getNumber())));
+        }
+        return runtime.getNil();
+    }
+
+    /*
+     * call-seq:
+     *     EnumDescriptor.enummodule => module
+     *
+     * Returns the Ruby module corresponding to this enum type. Cannot be called
+     * until the enum descriptor has been added to a pool.
+     */
+    @JRubyMethod
+    public IRubyObject enummodule(ThreadContext context) {
+        if (this.klazz == null) {
+            this.klazz = buildModuleFromDescriptor(context);
+        }
+        return this.klazz;
+    }
+
+    public void setDescriptor(Descriptors.EnumDescriptor descriptor) {
+        this.descriptor = descriptor;
+    }
+
+    public Descriptors.EnumDescriptor getDescriptor() {
+        return this.descriptor;
+    }
+
+    public DescriptorProtos.EnumDescriptorProto.Builder getBuilder() {
+        return this.builder;
+    }
+
+    private RubyModule buildModuleFromDescriptor(ThreadContext context) {
+        Ruby runtime = context.runtime;
+        Utils.checkNameAvailability(context, name.asJavaString());
+
+        RubyModule enumModule = RubyModule.newModule(runtime);
+        for (Descriptors.EnumValueDescriptor value : descriptor.getValues()) {
+            enumModule.defineConstant(value.getName(), runtime.newFixnum(value.getNumber()));
+        }
+
+        enumModule.instance_variable_set(runtime.newString(Utils.DESCRIPTOR_INSTANCE_VAR), this);
+        enumModule.defineAnnotatedMethods(RubyEnum.class);
+        return enumModule;
+    }
+
+    private IRubyObject name;
+    private RubyModule klazz;
+    private Descriptors.EnumDescriptor descriptor;
+    private DescriptorProtos.EnumDescriptorProto.Builder builder;
+}

ruby/src/main/java/com/google/protobuf/jruby/RubyFieldDescriptor.java

+/*
+ * Protocol Buffers - Google's data interchange format
+ * Copyright 2014 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.
+ *     * Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following disclaimer
+ * in the documentation and/or other materials provided with the
+ * distribution.
+ *     * Neither the name of Google Inc. nor the names of its
+ * contributors may be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+package com.google.protobuf.jruby;
+
+import com.google.protobuf.DescriptorProtos;
+import com.google.protobuf.Descriptors;
+import org.jruby.*;
+import org.jruby.anno.JRubyClass;
+import org.jruby.anno.JRubyMethod;
+import org.jruby.runtime.ObjectAllocator;
+import org.jruby.runtime.ThreadContext;
+import org.jruby.runtime.builtin.IRubyObject;
+
+@JRubyClass(name = "FieldDescriptor")
+public class RubyFieldDescriptor extends RubyObject {
+    public static void createRubyFileDescriptor(Ruby runtime) {
+        RubyModule mProtobuf = runtime.getClassFromPath("Google::Protobuf");
+        RubyClass cFieldDescriptor = mProtobuf.defineClassUnder("FieldDescriptor", runtime.getObject(), new ObjectAllocator() {
+            @Override
+            public IRubyObject allocate(Ruby runtime, RubyClass klazz) {
+                return new RubyFieldDescriptor(runtime, klazz);
+            }
+        });
+        cFieldDescriptor.defineAnnotatedMethods(RubyFieldDescriptor.class);
+    }
+
+    public RubyFieldDescriptor(Ruby runtime, RubyClass klazz) {
+        super(runtime, klazz);
+    }
+
+    /*
+     * call-seq:
+     *     FieldDescriptor.new => field
+     *
+     * Returns a new field descriptor. Its name, type, etc. must be set before it is
+     * added to a message type.
+     */
+    @JRubyMethod
+    public IRubyObject initialize(ThreadContext context) {
+        builder = DescriptorProtos.FieldDescriptorProto.newBuilder();
+        return this;
+    }
+
+    /*
+     * call-seq:
+     *     FieldDescriptor.label = label
+     *
+     * Sets the label on this field. Cannot be called if field is part of a message
+     * type already in a pool.
+     */
+    @JRubyMethod(name = "label=")
+    public IRubyObject setLabel(ThreadContext context, IRubyObject value) {
+        this.builder.setLabel(
+                DescriptorProtos.FieldDescriptorProto.Label.valueOf("LABEL_" + value.asJavaString().toUpperCase()));
+        return context.runtime.getNil();
+    }
+
+    /*
+     * call-seq:
+     *     FieldDescriptor.name => name
+     *
+     * Returns the name of this field.
+     */
+    @JRubyMethod(name = "name")
+    public IRubyObject getName(ThreadContext context) {
+        return this.name;
+    }
+
+    @JRubyMethod(name = "subtype")
+    public IRubyObject getSubType(ThreadContext context) {
+        return subType;
+    }
+
+    /*
+     * call-seq:
+     *     FieldDescriptor.name = name
+     *
+     * Sets the name of this field. Cannot be called once the containing message
+     * type, if any, is added to a pool.
+     */
+    @JRubyMethod(name = "name=")
+    public IRubyObject setName(ThreadContext context, IRubyObject value) {
+        String nameStr = value.asJavaString();
+        this.name = context.runtime.newString(nameStr);
+        this.builder.setName(Utils.escapeIdentifier(nameStr));
+        return context.runtime.getNil();
+    }
+
+    /*
+     * call-seq:
+     *     FieldDescriptor.type => type
+     *
+     * Returns this field's type, as a Ruby symbol, or nil if not yet set.
+     *
+     * Valid field types are:
+     *     :int32, :int64, :uint32, :uint64, :float, :double, :bool, :string,
+     *     :bytes, :message.
+     */
+    @JRubyMethod(name = "type")
+    public IRubyObject getType(ThreadContext context) {
+        return Utils.fieldTypeToRuby(context, this.builder.getType());
+    }
+
+    /*
+     * call-seq:
+     *     FieldDescriptor.type = type
+     *
+     * Sets this field's type. Cannot be called if field is part of a message type
+     * already in a pool.
+     */
+    @JRubyMethod(name = "type=")
+    public IRubyObject setType(ThreadContext context, IRubyObject value) {
+        this.builder.setType(DescriptorProtos.FieldDescriptorProto.Type.valueOf("TYPE_" + value.asJavaString().toUpperCase()));
+        return context.runtime.getNil();
+    }
+
+    /*
+     * call-seq:
+     *     FieldDescriptor.number = number
+     *
+     * Sets the tag number for this field. Cannot be called if field is part of a
+     * message type already in a pool.
+     */
+    @JRubyMethod(name = "number=")
+    public IRubyObject setNumber(ThreadContext context, IRubyObject value) {
+        this.builder.setNumber(RubyNumeric.num2int(value));
+        return context.runtime.getNil();
+    }
+
+    /*
+     * call-seq:
+     *     FieldDescriptor.submsg_name = submsg_name
+     *
+     * Sets the name of the message or enum type corresponding to this field, if it
+     * is a message or enum field (respectively). This type name will be resolved
+     * within the context of the pool to which the containing message type is added.
+     * Cannot be called on field that are not of message or enum type, or on fields
+     * that are part of a message type already added to a pool.
+     */
+    @JRubyMethod(name = "submsg_name=")
+    public IRubyObject setSubmsgName(ThreadContext context, IRubyObject name) {
+        this.builder.setTypeName("." + Utils.escapeIdentifier(name.asJavaString()));
+        return context.runtime.getNil();
+    }
+
+    /*
+     * call-seq:
+     *     FieldDescriptor.get(message) => value
+     *
+     * Returns the value set for this field on the given message. Raises an
+     * exception if message is of the wrong type.
+     */
+    @JRubyMethod(name = "get")
+    public IRubyObject getValue(ThreadContext context, IRubyObject msgRb) {
+        RubyMessage message = (RubyMessage) msgRb;
+        if (message.getDescriptor() != fieldDef.getContainingType()) {
+            throw context.runtime.newTypeError("set method called on wrong message type");
+        }
+        return message.getField(context, fieldDef);
+    }
+
+    /*
+     * call-seq:
+     *     FieldDescriptor.set(message, value)
+     *
+     * Sets the value corresponding to this field to the given value on the given
+     * message. Raises an exception if message is of the wrong type. Performs the
+     * ordinary type-checks for field setting.
+     */
+    @JRubyMethod(name = "set")
+    public IRubyObject setValue(ThreadContext context, IRubyObject msgRb, IRubyObject value) {
+        RubyMessage message = (RubyMessage) msgRb;
+        if (message.getDescriptor() != fieldDef.getContainingType()) {
+            throw context.runtime.newTypeError("set method called on wrong message type");
+        }
+        message.setField(context, fieldDef, value);
+        return context.runtime.getNil();
+    }
+
+    protected void setSubType(IRubyObject rubyDescriptor) {
+        this.subType = rubyDescriptor;
+    }
+
+    protected void setFieldDef(Descriptors.FieldDescriptor fieldDescriptor) {
+        this.fieldDef = fieldDescriptor;
+    }
+
+    protected void setOneofName(IRubyObject name) {
+        oneofName = name;
+    }
+
+    protected void setOneofIndex(int index) {
+        hasOneofIndex = true;
+        oneofIndex = index;
+    }
+
+    protected IRubyObject getOneofName() {
+        return oneofName;
+    }
+
+    protected Descriptors.FieldDescriptor getFieldDef() {
+        return fieldDef;
+    }
+
+    protected DescriptorProtos.FieldDescriptorProto build() {
+        if (hasOneofIndex)
+            builder.setOneofIndex(oneofIndex);
+        return this.builder.build();
+    }
+
+    private DescriptorProtos.FieldDescriptorProto.Builder builder;
+    private IRubyObject name;
+    private IRubyObject subType;
+    private IRubyObject oneofName;
+    private Descriptors.FieldDescriptor fieldDef;
+    private int oneofIndex;
+    private boolean hasOneofIndex = false;
+}

ruby/src/main/java/com/google/protobuf/jruby/RubyOneofBuilderContext.java

+/*
+ * Protocol Buffers - Google's data interchange format
+ * Copyright 2014 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.
+ *     * Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following disclaimer
+ * in the documentation and/or other materials provided with the
+ * distribution.
+ *     * Neither the name of Google Inc. nor the names of its
+ * contributors may be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+package com.google.protobuf.jruby;
+
+import org.jruby.Ruby;
+import org.jruby.RubyClass;
+import org.jruby.RubyModule;
+import org.jruby.RubyObject;
+import org.jruby.anno.JRubyClass;
+import org.jruby.anno.JRubyMethod;
+import org.jruby.runtime.ObjectAllocator;
+import org.jruby.runtime.ThreadContext;
+import org.jruby.runtime.builtin.IRubyObject;
+
+@JRubyClass(name = "OneofBuilderContext")
+public class RubyOneofBuilderContext extends RubyObject {
+    public static void createRubyOneofBuilderContext(Ruby runtime) {
+        RubyModule protobuf = runtime.getClassFromPath("Google::Protobuf");
+        RubyModule internal = protobuf.defineModuleUnder("Internal");
+        RubyClass cRubyOneofBuidlerContext = internal.defineClassUnder("OneofBuilderContext", runtime.getObject(), new ObjectAllocator() {
+            @Override
+            public IRubyObject allocate(Ruby ruby, RubyClass rubyClass) {
+                return new RubyOneofBuilderContext(ruby, rubyClass);
+            }
+        });
+        cRubyOneofBuidlerContext.defineAnnotatedMethods(RubyOneofBuilderContext.class);
+    }
+
+    public RubyOneofBuilderContext(Ruby ruby, RubyClass rubyClass) {
+        super(ruby, rubyClass);
+    }
+
+    @JRubyMethod
+    public IRubyObject initialize(ThreadContext context, IRubyObject oneofdef) {
+        this.descriptor = (RubyOneofDescriptor) oneofdef;
+        this.cFieldDescriptor = (RubyClass) context.runtime.getClassFromPath("Google::Protobuf::FieldDescriptor");
+        return this;
+    }
+
+    @JRubyMethod(required = 3, optional = 1)
+    public IRubyObject optional(ThreadContext context, IRubyObject[] args) {
+        IRubyObject name = args[0];
+        IRubyObject type = args[1];
+        IRubyObject number = args[2];
+        IRubyObject typeClass = args.length > 3 ? args[3] : context.runtime.getNil();
+        RubyFieldDescriptor fieldDescriptor = Utils.msgdefCreateField(context, "optional",
+                name, type, number, typeClass, cFieldDescriptor);
+        descriptor.addField(context, fieldDescriptor);
+        return this;
+    }
+
+    private RubyOneofDescriptor descriptor;
+    private RubyClass cFieldDescriptor;
+}

ruby/src/main/java/com/google/protobuf/jruby/RubyOneofDescriptor.java

+package com.google.protobuf.jruby;
+
+import com.google.protobuf.DescriptorProtos;
+import com.google.protobuf.Descriptors;
+import org.jruby.Ruby;
+import org.jruby.RubyClass;
+import org.jruby.RubyModule;
+import org.jruby.RubyObject;
+import org.jruby.anno.JRubyClass;
+import org.jruby.anno.JRubyMethod;
+import org.jruby.runtime.Block;
+import org.jruby.runtime.ObjectAllocator;
+import org.jruby.runtime.ThreadContext;
+import org.jruby.runtime.builtin.IRubyObject;
+
+import java.util.*;
+
+@JRubyClass(name = "OneofDescriptor", include = "Enumerable")
+public class RubyOneofDescriptor extends RubyObject {
+
+    public static void createRubyOneofDescriptor(Ruby runtime) {
+        RubyModule protobuf = runtime.getClassFromPath("Google::Protobuf");
+        RubyClass cRubyOneofDescriptor = protobuf.defineClassUnder("OneofDescriptor", runtime.getObject(), new ObjectAllocator() {
+            @Override
+            public IRubyObject allocate(Ruby ruby, RubyClass rubyClass) {
+                return new RubyOneofDescriptor(ruby, rubyClass);
+            }
+        });
+        cRubyOneofDescriptor.defineAnnotatedMethods(RubyOneofDescriptor.class);
+        cRubyOneofDescriptor.includeModule(runtime.getEnumerable());
+    }
+
+    public RubyOneofDescriptor(Ruby ruby, RubyClass rubyClass) {
+        super(ruby, rubyClass);
+    }
+
+    @JRubyMethod
+    public IRubyObject initialize(ThreadContext context) {
+        builder = DescriptorProtos.OneofDescriptorProto.newBuilder();
+        fields = new ArrayList<RubyFieldDescriptor>();
+        return this;
+    }
+
+    /*
+     * call-seq:
+     *     OneofDescriptor.name => name
+     *
+     * Returns the name of this oneof.
+     */
+    @JRubyMethod(name = "name")
+    public IRubyObject getName(ThreadContext context) {
+        return name;
+    }
+
+    /*
+     * call-seq:
+     *     OneofDescriptor.name = name
+     *
+     * Sets a new name for this oneof. The oneof must not have been added to a
+     * message descriptor yet.
+     */
+    @JRubyMethod(name = "name=")
+    public IRubyObject setName(ThreadContext context, IRubyObject name) {
+        this.name = context.runtime.newString(name.asJavaString());
+        this.builder.setName(name.asJavaString());
+        return context.runtime.getNil();
+    }
+
+    /*
+     * call-seq:
+     *     OneofDescriptor.add_field(field) => nil
+     *
+     * Adds a field to this oneof. The field may have been added to this oneof in
+     * the past, or the message to which this oneof belongs (if any), but may not
+     * have already been added to any other oneof or message. Otherwise, an
+     * exception is raised.
+     *
+     * All fields added to the oneof via this method will be automatically added to
+     * the message to which this oneof belongs, if it belongs to one currently, or
+     * else will be added to any message to which the oneof is later added at the
+     * time that it is added.
+     */
+    @JRubyMethod(name = "add_field")
+    public IRubyObject addField(ThreadContext context, IRubyObject obj) {
+        RubyFieldDescriptor fieldDescriptor = (RubyFieldDescriptor) obj;
+        fieldDescriptor.setOneofName(this.name);
+        fields.add(fieldDescriptor);
+        return context.runtime.getNil();
+    }
+
+    /*
+     * call-seq:
+     *     OneofDescriptor.each(&block) => nil
+     *
+     * Iterates through fields in this oneof, yielding to the block on each one.
+     */
+    @JRubyMethod
+    public IRubyObject each(ThreadContext context, Block block) {
+        for (RubyFieldDescriptor field : fields) {
+            block.yieldSpecific(context, field);
+        }
+        return context.runtime.getNil();
+    }
+
+    public DescriptorProtos.OneofDescriptorProto build(int index) {
+        for (RubyFieldDescriptor field: fields) {
+            field.setOneofIndex(index);
+        }
+        return this.builder.build();
+    }
+
+    protected Collection<RubyFieldDescriptor> getFields() {
+        return fields;
+    }
+
+    protected Descriptors.OneofDescriptor getOneofDescriptor() {
+        RubyFieldDescriptor fieldDescriptor = fields.get(0);
+        return fieldDescriptor.getFieldDef().getContainingOneof();
+    }
+
+    private IRubyObject name;
+    private DescriptorProtos.OneofDescriptorProto.Builder builder;
+    private List<RubyFieldDescriptor> fields;
+}

ruby/src/main/java/com/google/protobuf/jruby/RubyProtobuf.java

+/*
+ * Protocol Buffers - Google's data interchange format
+ * Copyright 2014 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.
+ *     * Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following disclaimer
+ * in the documentation and/or other materials provided with the
+ * distribution.
+ *     * Neither the name of Google Inc. nor the names of its
+ * contributors may be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+package com.google.protobuf.jruby;
+
+import org.jruby.Ruby;
+import org.jruby.RubyModule;
+import org.jruby.anno.JRubyMethod;
+import org.jruby.anno.JRubyModule;
+import org.jruby.runtime.ThreadContext;
+import org.jruby.runtime.builtin.IRubyObject;
+
+@JRubyModule(name = "Protobuf")
+public class RubyProtobuf {
+
+    public static void createProtobuf(Ruby runtime) {
+        RubyModule mGoogle = runtime.getModule("Google");
+        RubyModule mProtobuf = mGoogle.defineModuleUnder("Protobuf");
+        mProtobuf.defineAnnotatedMethods(RubyProtobuf.class);
+    }
+
+    /*
+     * call-seq:
+     *     Google::Protobuf.encode(msg) => bytes
+     *
+     * Encodes the given message object to protocol buffers wire format. This is an
+     * alternative to the #encode method on msg's class.
+     */
+    @JRubyMethod(meta = true)
+    public static IRubyObject encode(ThreadContext context, IRubyObject self, IRubyObject message) {
+        return RubyMessage.encode(context, message.getMetaClass(), message);
+    }
+
+    /*
+     * call-seq:
+     *     Google::Protobuf.decode(class, bytes) => msg
+     *
+     * Decodes the given bytes as protocol buffers wire format under the
+     * interpretation given by the given class's message definition. This is an
+     * alternative to the #decode method on the given class.
+     */
+    @JRubyMethod(meta = true)
+    public static IRubyObject decode(ThreadContext context, IRubyObject self, IRubyObject klazz, IRubyObject message) {
+        return RubyMessage.decode(context, klazz, message);
+    }
+
+    /*
+     * call-seq:
+     *     Google::Protobuf.encode_json(msg) => json_string
+     *
+     * Encodes the given message object to its JSON representation. This is an
+     * alternative to the #encode_json method on msg's class.
+     */
+    @JRubyMethod(name = "encode_json", meta = true)
+    public static IRubyObject encodeJson(ThreadContext context, IRubyObject self, IRubyObject message) {
+        return RubyMessage.encodeJson(context, message.getMetaClass(), message);
+    }
+
+    /*
+     * call-seq:
+     *     Google::Protobuf.decode_json(class, json_string) => msg
+     *
+     * Decodes the given JSON string under the interpretation given by the given
+     * class's message definition. This is an alternative to the #decode_json method
+     * on the given class.
+     */
+    @JRubyMethod(name = "decode_json", meta = true)
+    public static IRubyObject decodeJson(ThreadContext context, IRubyObject self, IRubyObject klazz, IRubyObject message) {
+        return RubyMessage.decodeJson(context, klazz, message);
+    }
+
+    /*
+     * call-seq:
+     *     Google::Protobuf.deep_copy(obj) => copy_of_obj
+     *
+     * Performs a deep copy of either a RepeatedField instance or a message object,
+     * recursively copying its members.
+     */
+    @JRubyMethod(name = "deep_copy", meta = true)
+    public static IRubyObject deepCopy(ThreadContext context, IRubyObject self, IRubyObject message) {
+        if (message instanceof RubyMessage) {
+            return ((RubyMessage) message).deepCopy(context);
+        } else if (message instanceof RubyRepeatedField) {
+            return ((RubyRepeatedField) message).deepCopy(context);
+        } else {
+            return ((RubyMap) message).deepCopy(context);
+        }
+    }
+}

ruby/src/main/java/google/ProtobufJavaService.java

+/*
+ * Protocol Buffers - Google's data interchange format
+ * Copyright 2014 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.
+ *     * Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following disclaimer
+ * in the documentation and/or other materials provided with the
+ * distribution.
+ *     * Neither the name of Google Inc. nor the names of its
+ * contributors may be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+package google;
+
+import com.google.protobuf.jruby.*;
+import org.jruby.Ruby;
+import org.jruby.runtime.load.BasicLibraryService;
+
+import java.io.IOException;
+
+public class ProtobufJavaService implements BasicLibraryService {
+    @Override
+    public boolean basicLoad(Ruby ruby) throws IOException {
+        ruby.defineModule("Google");
+        RubyProtobuf.createProtobuf(ruby);
+        RubyDescriptor.createRubyDescriptor(ruby);
+        RubyBuilder.createRubyBuilder(ruby);
+        RubyFieldDescriptor.createRubyFileDescriptor(ruby);
+        RubyMessageBuilderContext.createRubyMessageBuilderContext(ruby);
+        RubyEnumDescriptor.createRubyEnumDescriptor(ruby);
+        RubyEnumBuilderContext.createRubyEnumBuilderContext(ruby);
+        RubyDescriptorPool.createRubyDescriptorPool(ruby);
+        RubyRepeatedField.createRubyRepeatedField(ruby);
+        RubyFieldDescriptor.createRubyFileDescriptor(ruby);
+        RubyMap.createRubyMap(ruby);
+        RubyOneofDescriptor.createRubyOneofDescriptor(ruby);
+        RubyOneofBuilderContext.createRubyOneofBuilderContext(ruby);
+        return true;
+    }
+}

ruby/src/main/sentinel.proto

+syntax = "proto3";
+package com.google.protobuf.jruby;
+option optimize_for = CODE_SIZE;
+
+message Sentinel {
+  optional int32 default_int32 = 1;
+  optional int64 default_int64 = 2;
+  optional uint32 default_unit32 = 3;
+  optional uint64 default_uint64 = 4;
+  optional string default_string = 5;
+  optional bool default_bool = 6;
+  optional float default_float = 7;
+  optional double default_double = 8;
+  optional bytes default_bytes = 9;
+}

ruby/tests/basic.rb

@@ -972,6 +972,7 @@ module BasicTest
     end
 
     def test_json
+      skip("Unimplemented") if RUBY_PLATFORM == "java"
       m = TestMessage.new(:optional_int32 => 1234,
                           :optional_int64 => -0x1_0000_0000,
                           :optional_uint32 => 0x8000_0000,
@@ -994,6 +995,7 @@ module BasicTest
     end
 
     def test_json_maps
+      skip("Unimplemented") if RUBY_PLATFORM == "java"
       m = MapMessage.new(:map_string_int32 => {"a" => 1})
       expected = '{"map_string_int32":{"a":1},"map_string_msg":{}}'
       assert MapMessage.encode_json(m) == expected

ruby/tests/stress.rb

@@ -30,7 +30,7 @@ module StressTest
       100_000.times do
         mnew = TestMessage.decode(data)
         mnew = mnew.dup
-        assert mnew.inspect == m.inspect
+        assert_equal mnew.inspect, m.inspect
         assert TestMessage.encode(mnew) == data
       end
     end