| /* |
| * 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); |
| } |
| } |