Revert https://codereview.chromium.org/1291903002 (protobuf roll).

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

Index: third_party/protobuf/ruby/src/main/java/com/google/protobuf/jruby/RubyEnumDescriptor.java
diff --git a/third_party/protobuf/ruby/src/main/java/com/google/protobuf/jruby/RubyEnumDescriptor.java b/third_party/protobuf/ruby/src/main/java/com/google/protobuf/jruby/RubyEnumDescriptor.java
deleted file mode 100644
index 4df832d0cfc95b719e7cbb64b42162a998a48734..0000000000000000000000000000000000000000
--- a/third_party/protobuf/ruby/src/main/java/com/google/protobuf/jruby/RubyEnumDescriptor.java
+++ /dev/null
@@ -1,185 +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.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;
-}