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diff --git a/third_party/protobuf/ruby/src/main/java/com/google/protobuf/jruby/RubyDescriptor.java b/third_party/protobuf/ruby/src/main/java/com/google/protobuf/jruby/RubyDescriptor.java
deleted file mode 100644
index dd9179b030..0000000000
--- a/third_party/protobuf/ruby/src/main/java/com/google/protobuf/jruby/RubyDescriptor.java
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@@ -1,269 +0,0 @@
-/*
- * 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.Block;
-import org.jruby.runtime.ObjectAllocator;
-import org.jruby.runtime.ThreadContext;
-import org.jruby.runtime.builtin.IRubyObject;
-
-import java.util.HashMap;
-import java.util.Map;
-
-
-@JRubyClass(name = "Descriptor", include = "Enumerable")
-public class RubyDescriptor extends RubyObject {
- public static void createRubyDescriptor(Ruby runtime) {
- RubyModule protobuf = runtime.getClassFromPath("Google::Protobuf");
- RubyClass cDescriptor = protobuf.defineClassUnder("Descriptor", runtime.getObject(), new ObjectAllocator() {
- @Override
- public IRubyObject allocate(Ruby runtime, RubyClass klazz) {
- return new RubyDescriptor(runtime, klazz);
- }
- });
- cDescriptor.includeModule(runtime.getEnumerable());
- cDescriptor.defineAnnotatedMethods(RubyDescriptor.class);
- }
-
- public RubyDescriptor(Ruby runtime, RubyClass klazz) {
- super(runtime, klazz);
- }
-
- /*
- * call-seq:
- * Descriptor.new => descriptor
- *
- * Creates a new, empty, message type descriptor. At a minimum, its name must be
- * set before it is added to a pool. It cannot be used to create messages until
- * it is added to a pool, after which it becomes immutable (as part of a
- * finalization process).
- */
- @JRubyMethod
- public IRubyObject initialize(ThreadContext context) {
- this.builder = DescriptorProtos.DescriptorProto.newBuilder();
- this.fieldDefMap = new HashMap<String, RubyFieldDescriptor>();
- this.oneofDefs = new HashMap<IRubyObject, RubyOneofDescriptor>();
- return this;
- }
-
- /*
- * call-seq:
- * Descriptor.name => name
- *
- * Returns the name of this message type as a fully-qualfied string (e.g.,
- * My.Package.MessageType).
- */
- @JRubyMethod(name = "name")
- public IRubyObject getName(ThreadContext context) {
- return this.name;
- }
-
- /*
- * call-seq:
- * Descriptor.name = name
- *
- * Assigns a name to this message type. The descriptor must not have been added
- * to a pool yet.
- */
- @JRubyMethod(name = "name=")
- public IRubyObject setName(ThreadContext context, IRubyObject name) {
- this.name = name;
- this.builder.setName(Utils.escapeIdentifier(this.name.asJavaString()));
- return context.runtime.getNil();
- }
-
- /*
- * call-seq:
- * Descriptor.add_field(field) => nil
- *
- * Adds the given FieldDescriptor to this message type. The descriptor must not
- * have been added to a pool yet. Raises an exception if a field with the same
- * name or number already exists. Sub-type references (e.g. for fields of type
- * message) are not resolved at this point.
- */
- @JRubyMethod(name = "add_field")
- public IRubyObject addField(ThreadContext context, IRubyObject obj) {
- RubyFieldDescriptor fieldDef = (RubyFieldDescriptor) obj;
- this.fieldDefMap.put(fieldDef.getName(context).asJavaString(), fieldDef);
- this.builder.addField(fieldDef.build());
- return context.runtime.getNil();
- }
-
- /*
- * call-seq:
- * Descriptor.lookup(name) => FieldDescriptor
- *
- * Returns the field descriptor for the field with the given name, if present,
- * or nil if none.
- */
- @JRubyMethod
- public IRubyObject lookup(ThreadContext context, IRubyObject fieldName) {
- return this.fieldDefMap.get(fieldName.asJavaString());
- }
-
- /*
- * call-seq:
- * Descriptor.msgclass => message_klass
- *
- * Returns the Ruby class created for this message type. Valid only once the
- * message type has been added to a pool.
- */
- @JRubyMethod
- public IRubyObject msgclass(ThreadContext context) {
- if (this.klazz == null) {
- this.klazz = buildClassFromDescriptor(context);
- }
- return this.klazz;
- }
-
- /*
- * call-seq:
- * Descriptor.each(&block)
- *
- * Iterates over fields in this message type, yielding to the block on each one.
- */
- @JRubyMethod
- public IRubyObject each(ThreadContext context, Block block) {
- for (Map.Entry<String, RubyFieldDescriptor> entry : fieldDefMap.entrySet()) {
- block.yield(context, entry.getValue());
- }
- return context.runtime.getNil();
- }
-
- /*
- * call-seq:
- * Descriptor.add_oneof(oneof) => nil
- *
- * Adds the given OneofDescriptor to this message type. This descriptor must not
- * have been added to a pool yet. Raises an exception if a oneof with the same
- * name already exists, or if any of the oneof's fields' names or numbers
- * conflict with an existing field in this message type. All fields in the oneof
- * are added to the message descriptor. Sub-type references (e.g. for fields of
- * type message) are not resolved at this point.
- */
- @JRubyMethod(name = "add_oneof")
- public IRubyObject addOneof(ThreadContext context, IRubyObject obj) {
- RubyOneofDescriptor def = (RubyOneofDescriptor) obj;
- builder.addOneofDecl(def.build(builder.getOneofDeclCount()));
- for (RubyFieldDescriptor fieldDescriptor : def.getFields()) {
- addField(context, fieldDescriptor);
- }
- oneofDefs.put(def.getName(context), def);
- return context.runtime.getNil();
- }
-
- /*
- * call-seq:
- * Descriptor.each_oneof(&block) => nil
- *
- * Invokes the given block for each oneof in this message type, passing the
- * corresponding OneofDescriptor.
- */
- @JRubyMethod(name = "each_oneof")
- public IRubyObject eachOneof(ThreadContext context, Block block) {
- for (RubyOneofDescriptor oneofDescriptor : oneofDefs.values()) {
- block.yieldSpecific(context, oneofDescriptor);
- }
- return context.runtime.getNil();
- }
-
- /*
- * call-seq:
- * Descriptor.lookup_oneof(name) => OneofDescriptor
- *
- * Returns the oneof descriptor for the oneof with the given name, if present,
- * or nil if none.
- */
- @JRubyMethod(name = "lookup_oneof")
- public IRubyObject lookupOneof(ThreadContext context, IRubyObject name) {
- if (name instanceof RubySymbol) {
- name = ((RubySymbol) name).id2name();
- }
- return oneofDefs.containsKey(name) ? oneofDefs.get(name) : context.runtime.getNil();
- }
-
- public void setDescriptor(Descriptors.Descriptor descriptor) {
- this.descriptor = descriptor;
- }
-
- public Descriptors.Descriptor getDescriptor() {
- return this.descriptor;
- }
-
- public DescriptorProtos.DescriptorProto.Builder getBuilder() {
- return builder;
- }
-
- public void setMapEntry(boolean isMapEntry) {
- this.builder.setOptions(DescriptorProtos.MessageOptions.newBuilder().setMapEntry(isMapEntry));
- }
-
- private RubyModule buildClassFromDescriptor(ThreadContext context) {
- Ruby runtime = context.runtime;
-
- ObjectAllocator allocator = new ObjectAllocator() {
- @Override
- public IRubyObject allocate(Ruby runtime, RubyClass klazz) {
- return new RubyMessage(runtime, klazz, descriptor);
- }
- };
-
- // rb_define_class_id
- RubyClass klass = RubyClass.newClass(runtime, runtime.getObject());
- klass.setAllocator(allocator);
- klass.makeMetaClass(runtime.getObject().getMetaClass());
- klass.inherit(runtime.getObject());
- RubyModule messageExts = runtime.getClassFromPath("Google::Protobuf::MessageExts");
- klass.include(new IRubyObject[] {messageExts});
- klass.instance_variable_set(runtime.newString(Utils.DESCRIPTOR_INSTANCE_VAR), this);
- klass.defineAnnotatedMethods(RubyMessage.class);
- return klass;
- }
-
- protected RubyFieldDescriptor lookup(String fieldName) {
- return fieldDefMap.get(Utils.unescapeIdentifier(fieldName));
- }
-
- private IRubyObject name;
- private RubyModule klazz;
-
- private DescriptorProtos.DescriptorProto.Builder builder;
- private Descriptors.Descriptor descriptor;
- private Map<String, RubyFieldDescriptor> fieldDefMap;
- private Map<IRubyObject, RubyOneofDescriptor> oneofDefs;
-}