First pass at the big rename from ProtocolBuffers to Google.Protobuf.

We'll see what I've missed when CI fails...

25 files changed, 7626 insertions, 0 deletions

diff --git a/csharp/src/Google.Protobuf/Reflection/DescriptorBase.cs b/csharp/src/Google.Protobuf/Reflection/DescriptorBase.cs
new file mode 100644
index 00000000..0300cd58
--- /dev/null
+++ b/csharp/src/Google.Protobuf/Reflection/DescriptorBase.cs
@@ -0,0 +1,82 @@
+#region Copyright notice and license
+// Protocol Buffers - Google's data interchange format
+// Copyright 2008 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.
+#endregion
+
+namespace Google.Protobuf.Reflection
+{
+    /// <summary>
+    /// Base class for nearly all descriptors, providing common functionality.
+    /// </summary>
+    public abstract class DescriptorBase : IDescriptor
+    {
+        private readonly FileDescriptor file;
+        private readonly string fullName;
+        private readonly int index;
+
+        internal DescriptorBase(FileDescriptor file, string fullName, int index)
+        {
+            this.file = file;
+            this.fullName = fullName;
+            this.index = index;
+        }
+
+        /// <value>
+        /// The index of this descriptor within its parent descriptor. 
+        /// </value>
+        /// <remarks>
+        /// This returns the index of this descriptor within its parent, for
+        /// this descriptor's type. (There can be duplicate values for different
+        /// types, e.g. one enum type with index 0 and one message type with index 0.)
+        /// </remarks>
+        public int Index
+        {
+            get { return index; }
+        }
+
+        public abstract string Name { get; }
+
+        /// <summary>
+        /// The fully qualified name of the descriptor's target.
+        /// </summary>
+        public string FullName
+        {
+            get { return fullName; }
+        }
+
+        /// <value>
+        /// The file this descriptor was declared in.
+        /// </value>
+        public FileDescriptor File
+        {
+            get { return file; }
+        }
+    }
+}
\ No newline at end of file
diff --git a/csharp/src/Google.Protobuf/Reflection/DescriptorPool.cs b/csharp/src/Google.Protobuf/Reflection/DescriptorPool.cs
new file mode 100644
index 00000000..157ea400
--- /dev/null
+++ b/csharp/src/Google.Protobuf/Reflection/DescriptorPool.cs
@@ -0,0 +1,365 @@
+#region Copyright notice and license
+// Protocol Buffers - Google's data interchange format
+// Copyright 2008 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.
+#endregion
+
+using System;
+using System.Collections.Generic;
+using System.Text;
+using System.Text.RegularExpressions;
+
+namespace Google.Protobuf.Reflection
+{
+    /// <summary>
+    /// Contains lookup tables containing all the descriptors defined in a particular file.
+    /// </summary>
+    internal sealed class DescriptorPool
+    {
+        private readonly IDictionary<string, IDescriptor> descriptorsByName =
+            new Dictionary<string, IDescriptor>();
+
+        private readonly IDictionary<DescriptorIntPair, FieldDescriptor> fieldsByNumber =
+            new Dictionary<DescriptorIntPair, FieldDescriptor>();
+
+        private readonly IDictionary<DescriptorIntPair, EnumValueDescriptor> enumValuesByNumber =
+            new Dictionary<DescriptorIntPair, EnumValueDescriptor>();
+
+        private readonly HashSet<FileDescriptor> dependencies;
+
+        internal DescriptorPool(FileDescriptor[] dependencyFiles)
+        {
+            dependencies = new HashSet<FileDescriptor>();
+            for (int i = 0; i < dependencyFiles.Length; i++)
+            {
+                dependencies.Add(dependencyFiles[i]);
+                ImportPublicDependencies(dependencyFiles[i]);
+            }
+
+            foreach (FileDescriptor dependency in dependencyFiles)
+            {
+                AddPackage(dependency.Package, dependency);
+            }
+        }
+
+        private void ImportPublicDependencies(FileDescriptor file)
+        {
+            foreach (FileDescriptor dependency in file.PublicDependencies)
+            {
+                if (dependencies.Add(dependency))
+                {
+                    ImportPublicDependencies(dependency);
+                }
+            }
+        }
+
+        /// <summary>
+        /// Finds a symbol of the given name within the pool.
+        /// </summary>
+        /// <typeparam name="T">The type of symbol to look for</typeparam>
+        /// <param name="fullName">Fully-qualified name to look up</param>
+        /// <returns>The symbol with the given name and type,
+        /// or null if the symbol doesn't exist or has the wrong type</returns>
+        internal T FindSymbol<T>(string fullName) where T : class
+        {
+            IDescriptor result;
+            descriptorsByName.TryGetValue(fullName, out result);
+            T descriptor = result as T;
+            if (descriptor != null)
+            {
+                return descriptor;
+            }
+
+            foreach (FileDescriptor dependency in dependencies)
+            {
+                dependency.DescriptorPool.descriptorsByName.TryGetValue(fullName, out result);
+                descriptor = result as T;
+                if (descriptor != null)
+                {
+                    return descriptor;
+                }
+            }
+
+            return null;
+        }
+
+        /// <summary>
+        /// Adds a package to the symbol tables. If a package by the same name
+        /// already exists, that is fine, but if some other kind of symbol
+        /// exists under the same name, an exception is thrown. If the package
+        /// has multiple components, this also adds the parent package(s).
+        /// </summary>
+        internal void AddPackage(string fullName, FileDescriptor file)
+        {
+            int dotpos = fullName.LastIndexOf('.');
+            String name;
+            if (dotpos != -1)
+            {
+                AddPackage(fullName.Substring(0, dotpos), file);
+                name = fullName.Substring(dotpos + 1);
+            }
+            else
+            {
+                name = fullName;
+            }
+
+            IDescriptor old;
+            if (descriptorsByName.TryGetValue(fullName, out old))
+            {
+                if (!(old is PackageDescriptor))
+                {
+                    throw new DescriptorValidationException(file,
+                                                            "\"" + name +
+                                                            "\" is already defined (as something other than a " +
+                                                            "package) in file \"" + old.File.Name + "\".");
+                }
+            }
+            descriptorsByName[fullName] = new PackageDescriptor(name, fullName, file);
+        }
+
+        /// <summary>
+        /// Adds a symbol to the symbol table.
+        /// </summary>
+        /// <exception cref="DescriptorValidationException">The symbol already existed
+        /// in the symbol table.</exception>
+        internal void AddSymbol(IDescriptor descriptor)
+        {
+            ValidateSymbolName(descriptor);
+            String fullName = descriptor.FullName;
+
+            IDescriptor old;
+            if (descriptorsByName.TryGetValue(fullName, out old))
+            {
+                int dotPos = fullName.LastIndexOf('.');
+                string message;
+                if (descriptor.File == old.File)
+                {
+                    if (dotPos == -1)
+                    {
+                        message = "\"" + fullName + "\" is already defined.";
+                    }
+                    else
+                    {
+                        message = "\"" + fullName.Substring(dotPos + 1) + "\" is already defined in \"" +
+                                  fullName.Substring(0, dotPos) + "\".";
+                    }
+                }
+                else
+                {
+                    message = "\"" + fullName + "\" is already defined in file \"" + old.File.Name + "\".";
+                }
+                throw new DescriptorValidationException(descriptor, message);
+            }
+            descriptorsByName[fullName] = descriptor;
+        }
+
+        private static readonly Regex ValidationRegex = new Regex("^[_A-Za-z][_A-Za-z0-9]*$",
+                                                                  FrameworkPortability.CompiledRegexWhereAvailable);
+
+        /// <summary>
+        /// Verifies that the descriptor's name is valid (i.e. it contains
+        /// only letters, digits and underscores, and does not start with a digit).
+        /// </summary>
+        /// <param name="descriptor"></param>
+        private static void ValidateSymbolName(IDescriptor descriptor)
+        {
+            if (descriptor.Name == "")
+            {
+                throw new DescriptorValidationException(descriptor, "Missing name.");
+            }
+            if (!ValidationRegex.IsMatch(descriptor.Name))
+            {
+                throw new DescriptorValidationException(descriptor,
+                                                        "\"" + descriptor.Name + "\" is not a valid identifier.");
+            }
+        }
+
+        /// <summary>
+        /// Returns the field with the given number in the given descriptor,
+        /// or null if it can't be found.
+        /// </summary>
+        internal FieldDescriptor FindFieldByNumber(MessageDescriptor messageDescriptor, int number)
+        {
+            FieldDescriptor ret;
+            fieldsByNumber.TryGetValue(new DescriptorIntPair(messageDescriptor, number), out ret);
+            return ret;
+        }
+
+        internal EnumValueDescriptor FindEnumValueByNumber(EnumDescriptor enumDescriptor, int number)
+        {
+            EnumValueDescriptor ret;
+            enumValuesByNumber.TryGetValue(new DescriptorIntPair(enumDescriptor, number), out ret);
+            return ret;
+        }
+
+        /// <summary>
+        /// Adds a field to the fieldsByNumber table.
+        /// </summary>
+        /// <exception cref="DescriptorValidationException">A field with the same
+        /// containing type and number already exists.</exception>
+        internal void AddFieldByNumber(FieldDescriptor field)
+        {
+            DescriptorIntPair key = new DescriptorIntPair(field.ContainingType, field.FieldNumber);
+            FieldDescriptor old;
+            if (fieldsByNumber.TryGetValue(key, out old))
+            {
+                throw new DescriptorValidationException(field, "Field number " + field.FieldNumber +
+                                                               "has already been used in \"" +
+                                                               field.ContainingType.FullName +
+                                                               "\" by field \"" + old.Name + "\".");
+            }
+            fieldsByNumber[key] = field;
+        }
+
+        /// <summary>
+        /// Adds an enum value to the enumValuesByNumber table. If an enum value
+        /// with the same type and number already exists, this method does nothing.
+        /// (This is allowed; the first value defined with the number takes precedence.)
+        /// </summary>
+        internal void AddEnumValueByNumber(EnumValueDescriptor enumValue)
+        {
+            DescriptorIntPair key = new DescriptorIntPair(enumValue.EnumDescriptor, enumValue.Number);
+            if (!enumValuesByNumber.ContainsKey(key))
+            {
+                enumValuesByNumber[key] = enumValue;
+            }
+        }
+
+        /// <summary>
+        /// Looks up a descriptor by name, relative to some other descriptor.
+        /// The name may be fully-qualified (with a leading '.'), partially-qualified,
+        /// or unqualified. C++-like name lookup semantics are used to search for the
+        /// matching descriptor.
+        /// </summary>
+        internal IDescriptor LookupSymbol(string name, IDescriptor relativeTo)
+        {
+            // TODO(jonskeet):  This could be optimized in a number of ways.
+
+            IDescriptor result;
+            if (name.StartsWith("."))
+            {
+                // Fully-qualified name.
+                result = FindSymbol<IDescriptor>(name.Substring(1));
+            }
+            else
+            {
+                // If "name" is a compound identifier, we want to search for the
+                // first component of it, then search within it for the rest.
+                int firstPartLength = name.IndexOf('.');
+                string firstPart = firstPartLength == -1 ? name : name.Substring(0, firstPartLength);
+
+                // We will search each parent scope of "relativeTo" looking for the
+                // symbol.
+                StringBuilder scopeToTry = new StringBuilder(relativeTo.FullName);
+
+                while (true)
+                {
+                    // Chop off the last component of the scope.
+
+                    // TODO(jonskeet): Make this more efficient. May not be worth using StringBuilder at all
+                    int dotpos = scopeToTry.ToString().LastIndexOf(".");
+                    if (dotpos == -1)
+                    {
+                        result = FindSymbol<IDescriptor>(name);
+                        break;
+                    }
+                    else
+                    {
+                        scopeToTry.Length = dotpos + 1;
+
+                        // Append firstPart and try to find.
+                        scopeToTry.Append(firstPart);
+                        result = FindSymbol<IDescriptor>(scopeToTry.ToString());
+
+                        if (result != null)
+                        {
+                            if (firstPartLength != -1)
+                            {
+                                // We only found the first part of the symbol.  Now look for
+                                // the whole thing.  If this fails, we *don't* want to keep
+                                // searching parent scopes.
+                                scopeToTry.Length = dotpos + 1;
+                                scopeToTry.Append(name);
+                                result = FindSymbol<IDescriptor>(scopeToTry.ToString());
+                            }
+                            break;
+                        }
+
+                        // Not found.  Remove the name so we can try again.
+                        scopeToTry.Length = dotpos;
+                    }
+                }
+            }
+
+            if (result == null)
+            {
+                throw new DescriptorValidationException(relativeTo, "\"" + name + "\" is not defined.");
+            }
+            else
+            {
+                return result;
+            }
+        }
+
+        /// <summary>
+        /// Struct used to hold the keys for the fieldByNumber table.
+        /// </summary>
+        private struct DescriptorIntPair : IEquatable<DescriptorIntPair>
+        {
+            private readonly int number;
+            private readonly IDescriptor descriptor;
+
+            internal DescriptorIntPair(IDescriptor descriptor, int number)
+            {
+                this.number = number;
+                this.descriptor = descriptor;
+            }
+
+            public bool Equals(DescriptorIntPair other)
+            {
+                return descriptor == other.descriptor
+                       && number == other.number;
+            }
+
+            public override bool Equals(object obj)
+            {
+                if (obj is DescriptorIntPair)
+                {
+                    return Equals((DescriptorIntPair) obj);
+                }
+                return false;
+            }
+
+            public override int GetHashCode()
+            {
+                return descriptor.GetHashCode()*((1 << 16) - 1) + number;
+            }
+        }
+    }
+}
\ No newline at end of file
diff --git a/csharp/src/Google.Protobuf/Reflection/DescriptorProtoFile.cs b/csharp/src/Google.Protobuf/Reflection/DescriptorProtoFile.cs
new file mode 100644
index 00000000..c87969b9
--- /dev/null
+++ b/csharp/src/Google.Protobuf/Reflection/DescriptorProtoFile.cs
@@ -0,0 +1,4943 @@
+// Generated by the protocol buffer compiler.  DO NOT EDIT!
+// source: google/protobuf/descriptor_proto_file.proto
+#pragma warning disable 1591, 0612, 3021
+#region Designer generated code
+
+using pb = global::Google.Protobuf;
+using pbc = global::Google.Protobuf.Collections;
+using pbr = global::Google.Protobuf.Reflection;
+using scg = global::System.Collections.Generic;
+namespace Google.Protobuf.Reflection {
+
+  [global::System.Diagnostics.DebuggerNonUserCodeAttribute()]
+  internal static partial class DescriptorProtoFile {
+
+    #region Static variables
+    internal static pbr::FieldAccessorTable internal__static_google_protobuf_FileDescriptorSet__FieldAccessorTable;
+    internal static pbr::FieldAccessorTable internal__static_google_protobuf_FileDescriptorProto__FieldAccessorTable;
+    internal static pbr::FieldAccessorTable internal__static_google_protobuf_DescriptorProto__FieldAccessorTable;
+    internal static pbr::FieldAccessorTable internal__static_google_protobuf_DescriptorProto_ExtensionRange__FieldAccessorTable;
+    internal static pbr::FieldAccessorTable internal__static_google_protobuf_DescriptorProto_ReservedRange__FieldAccessorTable;
+    internal static pbr::FieldAccessorTable internal__static_google_protobuf_FieldDescriptorProto__FieldAccessorTable;
+    internal static pbr::FieldAccessorTable internal__static_google_protobuf_OneofDescriptorProto__FieldAccessorTable;
+    internal static pbr::FieldAccessorTable internal__static_google_protobuf_EnumDescriptorProto__FieldAccessorTable;
+    internal static pbr::FieldAccessorTable internal__static_google_protobuf_EnumValueDescriptorProto__FieldAccessorTable;
+    internal static pbr::FieldAccessorTable internal__static_google_protobuf_ServiceDescriptorProto__FieldAccessorTable;
+    internal static pbr::FieldAccessorTable internal__static_google_protobuf_MethodDescriptorProto__FieldAccessorTable;
+    internal static pbr::FieldAccessorTable internal__static_google_protobuf_FileOptions__FieldAccessorTable;
+    internal static pbr::FieldAccessorTable internal__static_google_protobuf_MessageOptions__FieldAccessorTable;
+    internal static pbr::FieldAccessorTable internal__static_google_protobuf_FieldOptions__FieldAccessorTable;
+    internal static pbr::FieldAccessorTable internal__static_google_protobuf_EnumOptions__FieldAccessorTable;
+    internal static pbr::FieldAccessorTable internal__static_google_protobuf_EnumValueOptions__FieldAccessorTable;
+    internal static pbr::FieldAccessorTable internal__static_google_protobuf_ServiceOptions__FieldAccessorTable;
+    internal static pbr::FieldAccessorTable internal__static_google_protobuf_MethodOptions__FieldAccessorTable;
+    internal static pbr::FieldAccessorTable internal__static_google_protobuf_UninterpretedOption__FieldAccessorTable;
+    internal static pbr::FieldAccessorTable internal__static_google_protobuf_UninterpretedOption_NamePart__FieldAccessorTable;
+    internal static pbr::FieldAccessorTable internal__static_google_protobuf_SourceCodeInfo__FieldAccessorTable;
+    internal static pbr::FieldAccessorTable internal__static_google_protobuf_SourceCodeInfo_Location__FieldAccessorTable;
+    #endregion
+    #region Descriptor
+    public static pbr::FileDescriptor Descriptor {
+      get { return descriptor; }
+    }
+    private static pbr::FileDescriptor descriptor;
+
+    static DescriptorProtoFile() {
+      byte[] descriptorData = global::System.Convert.FromBase64String(
+          string.Concat(
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+          "LlJlZmxlY3Rpb24="));
+      descriptor = pbr::FileDescriptor.InternalBuildGeneratedFileFrom(descriptorData,
+          new pbr::FileDescriptor[] {
+          });
+      internal__static_google_protobuf_FileDescriptorSet__FieldAccessorTable = 
+          new pbr::FieldAccessorTable(typeof(global::Google.Protobuf.Reflection.FileDescriptorSet), descriptor.MessageTypes[0],
+              new string[] { "File", }, new string[] { });
+      internal__static_google_protobuf_FileDescriptorProto__FieldAccessorTable = 
+          new pbr::FieldAccessorTable(typeof(global::Google.Protobuf.Reflection.FileDescriptorProto), descriptor.MessageTypes[1],
+              new string[] { "Name", "Package", "Dependency", "PublicDependency", "WeakDependency", "MessageType", "EnumType", "Service", "Extension", "Options", "SourceCodeInfo", "Syntax", }, new string[] { });
+      internal__static_google_protobuf_DescriptorProto__FieldAccessorTable = 
+          new pbr::FieldAccessorTable(typeof(global::Google.Protobuf.Reflection.DescriptorProto), descriptor.MessageTypes[2],
+              new string[] { "Name", "Field", "Extension", "NestedType", "EnumType", "ExtensionRange", "OneofDecl", "Options", "ReservedRange", "ReservedName", }, new string[] { });
+      internal__static_google_protobuf_DescriptorProto_ExtensionRange__FieldAccessorTable = 
+          new pbr::FieldAccessorTable(typeof(global::Google.Protobuf.Reflection.DescriptorProto.Types.ExtensionRange), descriptor.MessageTypes[2].NestedTypes[0],
+              new string[] { "Start", "End", }, new string[] { });
+      internal__static_google_protobuf_DescriptorProto_ReservedRange__FieldAccessorTable = 
+          new pbr::FieldAccessorTable(typeof(global::Google.Protobuf.Reflection.DescriptorProto.Types.ReservedRange), descriptor.MessageTypes[2].NestedTypes[1],
+              new string[] { "Start", "End", }, new string[] { });
+      internal__static_google_protobuf_FieldDescriptorProto__FieldAccessorTable = 
+          new pbr::FieldAccessorTable(typeof(global::Google.Protobuf.Reflection.FieldDescriptorProto), descriptor.MessageTypes[3],
+              new string[] { "Name", "Number", "Label", "Type", "TypeName", "Extendee", "DefaultValue", "OneofIndex", "Options", }, new string[] { });
+      internal__static_google_protobuf_OneofDescriptorProto__FieldAccessorTable = 
+          new pbr::FieldAccessorTable(typeof(global::Google.Protobuf.Reflection.OneofDescriptorProto), descriptor.MessageTypes[4],
+              new string[] { "Name", }, new string[] { });
+      internal__static_google_protobuf_EnumDescriptorProto__FieldAccessorTable = 
+          new pbr::FieldAccessorTable(typeof(global::Google.Protobuf.Reflection.EnumDescriptorProto), descriptor.MessageTypes[5],
+              new string[] { "Name", "Value", "Options", }, new string[] { });
+      internal__static_google_protobuf_EnumValueDescriptorProto__FieldAccessorTable = 
+          new pbr::FieldAccessorTable(typeof(global::Google.Protobuf.Reflection.EnumValueDescriptorProto), descriptor.MessageTypes[6],
+              new string[] { "Name", "Number", "Options", }, new string[] { });
+      internal__static_google_protobuf_ServiceDescriptorProto__FieldAccessorTable = 
+          new pbr::FieldAccessorTable(typeof(global::Google.Protobuf.Reflection.ServiceDescriptorProto), descriptor.MessageTypes[7],
+              new string[] { "Name", "Method", "Options", }, new string[] { });
+      internal__static_google_protobuf_MethodDescriptorProto__FieldAccessorTable = 
+          new pbr::FieldAccessorTable(typeof(global::Google.Protobuf.Reflection.MethodDescriptorProto), descriptor.MessageTypes[8],
+              new string[] { "Name", "InputType", "OutputType", "Options", "ClientStreaming", "ServerStreaming", }, new string[] { });
+      internal__static_google_protobuf_FileOptions__FieldAccessorTable = 
+          new pbr::FieldAccessorTable(typeof(global::Google.Protobuf.Reflection.FileOptions), descriptor.MessageTypes[9],
+              new string[] { "JavaPackage", "JavaOuterClassname", "JavaMultipleFiles", "JavaGenerateEqualsAndHash", "JavaStringCheckUtf8", "OptimizeFor", "GoPackage", "CcGenericServices", "JavaGenericServices", "PyGenericServices", "Deprecated", "CcEnableArenas", "ObjcClassPrefix", "CsharpNamespace", "UninterpretedOption", }, new string[] { });
+      internal__static_google_protobuf_MessageOptions__FieldAccessorTable = 
+          new pbr::FieldAccessorTable(typeof(global::Google.Protobuf.Reflection.MessageOptions), descriptor.MessageTypes[10],
+              new string[] { "MessageSetWireFormat", "NoStandardDescriptorAccessor", "Deprecated", "MapEntry", "UninterpretedOption", }, new string[] { });
+      internal__static_google_protobuf_FieldOptions__FieldAccessorTable = 
+          new pbr::FieldAccessorTable(typeof(global::Google.Protobuf.Reflection.FieldOptions), descriptor.MessageTypes[11],
+              new string[] { "Ctype", "Packed", "Jstype", "Lazy", "Deprecated", "Weak", "UninterpretedOption", }, new string[] { });
+      internal__static_google_protobuf_EnumOptions__FieldAccessorTable = 
+          new pbr::FieldAccessorTable(typeof(global::Google.Protobuf.Reflection.EnumOptions), descriptor.MessageTypes[12],
+              new string[] { "AllowAlias", "Deprecated", "UninterpretedOption", }, new string[] { });
+      internal__static_google_protobuf_EnumValueOptions__FieldAccessorTable = 
+          new pbr::FieldAccessorTable(typeof(global::Google.Protobuf.Reflection.EnumValueOptions), descriptor.MessageTypes[13],
+              new string[] { "Deprecated", "UninterpretedOption", }, new string[] { });
+      internal__static_google_protobuf_ServiceOptions__FieldAccessorTable = 
+          new pbr::FieldAccessorTable(typeof(global::Google.Protobuf.Reflection.ServiceOptions), descriptor.MessageTypes[14],
+              new string[] { "Deprecated", "UninterpretedOption", }, new string[] { });
+      internal__static_google_protobuf_MethodOptions__FieldAccessorTable = 
+          new pbr::FieldAccessorTable(typeof(global::Google.Protobuf.Reflection.MethodOptions), descriptor.MessageTypes[15],
+              new string[] { "Deprecated", "UninterpretedOption", }, new string[] { });
+      internal__static_google_protobuf_UninterpretedOption__FieldAccessorTable = 
+          new pbr::FieldAccessorTable(typeof(global::Google.Protobuf.Reflection.UninterpretedOption), descriptor.MessageTypes[16],
+              new string[] { "Name", "IdentifierValue", "PositiveIntValue", "NegativeIntValue", "DoubleValue", "StringValue", "AggregateValue", }, new string[] { });
+      internal__static_google_protobuf_UninterpretedOption_NamePart__FieldAccessorTable = 
+          new pbr::FieldAccessorTable(typeof(global::Google.Protobuf.Reflection.UninterpretedOption.Types.NamePart), descriptor.MessageTypes[16].NestedTypes[0],
+              new string[] { "NamePart_", "IsExtension", }, new string[] { });
+      internal__static_google_protobuf_SourceCodeInfo__FieldAccessorTable = 
+          new pbr::FieldAccessorTable(typeof(global::Google.Protobuf.Reflection.SourceCodeInfo), descriptor.MessageTypes[17],
+              new string[] { "Location", }, new string[] { });
+      internal__static_google_protobuf_SourceCodeInfo_Location__FieldAccessorTable = 
+          new pbr::FieldAccessorTable(typeof(global::Google.Protobuf.Reflection.SourceCodeInfo.Types.Location), descriptor.MessageTypes[17].NestedTypes[0],
+              new string[] { "Path", "Span", "LeadingComments", "TrailingComments", "LeadingDetachedComments", }, new string[] { });
+    }
+    #endregion
+
+  }
+  #region Messages
+  [global::System.Diagnostics.DebuggerNonUserCodeAttribute()]
+  internal sealed partial class FileDescriptorSet : pb::IMessage<FileDescriptorSet> {
+    private static readonly pb::MessageParser<FileDescriptorSet> _parser = new pb::MessageParser<FileDescriptorSet>(() => new FileDescriptorSet());
+    public static pb::MessageParser<FileDescriptorSet> Parser { get { return _parser; } }
+
+    private static readonly string[] _fieldNames = new string[] { "file" };
+    private static readonly uint[] _fieldTags = new uint[] { 10 };
+    public static pbr::MessageDescriptor Descriptor {
+      get { return global::Google.Protobuf.Reflection.DescriptorProtoFile.Descriptor.MessageTypes[0]; }
+    }
+
+    pbr::FieldAccessorTable pb::IReflectedMessage.Fields {
+      get { return global::Google.Protobuf.Reflection.DescriptorProtoFile.internal__static_google_protobuf_FileDescriptorSet__FieldAccessorTable; }
+    }
+
+    private bool _frozen = false;
+    public bool IsFrozen { get { return _frozen; } }
+
+    public FileDescriptorSet() {
+      OnConstruction();
+    }
+
+    partial void OnConstruction();
+
+    public FileDescriptorSet(FileDescriptorSet other) : this() {
+      file_ = other.file_.Clone();
+    }
+
+    public FileDescriptorSet Clone() {
+      return new FileDescriptorSet(this);
+    }
+
+    public void Freeze() {
+      if (IsFrozen) {
+        return;
+      }
+      _frozen = true;
+      file_.Freeze();
+    }
+
+    public const int FileFieldNumber = 1;
+    private static readonly pb::FieldCodec<global::Google.Protobuf.Reflection.FileDescriptorProto> _repeated_file_codec
+        = pb::FieldCodec.ForMessage(10, global::Google.Protobuf.Reflection.FileDescriptorProto.Parser);
+    private readonly pbc::RepeatedField<global::Google.Protobuf.Reflection.FileDescriptorProto> file_ = new pbc::RepeatedField<global::Google.Protobuf.Reflection.FileDescriptorProto>();
+    internal pbc::RepeatedField<global::Google.Protobuf.Reflection.FileDescriptorProto> File {
+      get { return file_; }
+    }
+
+    public override bool Equals(object other) {
+      return Equals(other as FileDescriptorSet);
+    }
+
+    public bool Equals(FileDescriptorSet other) {
+      if (ReferenceEquals(other, null)) {
+        return false;
+      }
+      if (ReferenceEquals(other, this)) {
+        return true;
+      }
+      if(!file_.Equals(other.file_)) return false;
+      return true;
+    }
+
+    public override int GetHashCode() {
+      int hash = 1;
+      hash ^= file_.GetHashCode();
+      return hash;
+    }
+
+    public override string ToString() {
+      return pb::JsonFormatter.Default.Format(this);
+    }
+
+    public void WriteTo(pb::CodedOutputStream output) {
+      file_.WriteTo(output, _repeated_file_codec);
+    }
+
+    public int CalculateSize() {
+      int size = 0;
+      size += file_.CalculateSize(_repeated_file_codec);
+      return size;
+    }
+
+    public void MergeFrom(FileDescriptorSet other) {
+      if (other == null) {
+        return;
+      }
+      file_.Add(other.file_);
+    }
+
+    public void MergeFrom(pb::CodedInputStream input) {
+      uint tag;
+      while (input.ReadTag(out tag)) {
+        switch(tag) {
+          case 0:
+            throw pb::InvalidProtocolBufferException.InvalidTag();
+          default:
+            if (pb::WireFormat.IsEndGroupTag(tag)) {
+              return;
+            }
+            break;
+          case 10: {
+            file_.AddEntriesFrom(input, _repeated_file_codec);
+            break;
+          }
+        }
+      }
+    }
+
+  }
+
+  [global::System.Diagnostics.DebuggerNonUserCodeAttribute()]
+  internal sealed partial class FileDescriptorProto : pb::IMessage<FileDescriptorProto> {
+    private static readonly pb::MessageParser<FileDescriptorProto> _parser = new pb::MessageParser<FileDescriptorProto>(() => new FileDescriptorProto());
+    public static pb::MessageParser<FileDescriptorProto> Parser { get { return _parser; } }
+
+    private static readonly string[] _fieldNames = new string[] { "dependency", "enum_type", "extension", "message_type", "name", "options", "package", "public_dependency", "service", "source_code_info", "syntax", "weak_dependency" };
+    private static readonly uint[] _fieldTags = new uint[] { 26, 42, 58, 34, 10, 66, 18, 80, 50, 74, 98, 88 };
+    public static pbr::MessageDescriptor Descriptor {
+      get { return global::Google.Protobuf.Reflection.DescriptorProtoFile.Descriptor.MessageTypes[1]; }
+    }
+
+    pbr::FieldAccessorTable pb::IReflectedMessage.Fields {
+      get { return global::Google.Protobuf.Reflection.DescriptorProtoFile.internal__static_google_protobuf_FileDescriptorProto__FieldAccessorTable; }
+    }
+
+    private bool _frozen = false;
+    public bool IsFrozen { get { return _frozen; } }
+
+    public FileDescriptorProto() {
+      OnConstruction();
+    }
+
+    partial void OnConstruction();
+
+    public FileDescriptorProto(FileDescriptorProto other) : this() {
+      name_ = other.name_;
+      package_ = other.package_;
+      dependency_ = other.dependency_.Clone();
+      publicDependency_ = other.publicDependency_.Clone();
+      weakDependency_ = other.weakDependency_.Clone();
+      messageType_ = other.messageType_.Clone();
+      enumType_ = other.enumType_.Clone();
+      service_ = other.service_.Clone();
+      extension_ = other.extension_.Clone();
+      Options = other.options_ != null ? other.Options.Clone() : null;
+      SourceCodeInfo = other.sourceCodeInfo_ != null ? other.SourceCodeInfo.Clone() : null;
+      syntax_ = other.syntax_;
+    }
+
+    public FileDescriptorProto Clone() {
+      return new FileDescriptorProto(this);
+    }
+
+    public void Freeze() {
+      if (IsFrozen) {
+        return;
+      }
+      _frozen = true;
+      dependency_.Freeze();
+      publicDependency_.Freeze();
+      weakDependency_.Freeze();
+      messageType_.Freeze();
+      enumType_.Freeze();
+      service_.Freeze();
+      extension_.Freeze();
+      if (options_ != null) Options.Freeze();
+      if (sourceCodeInfo_ != null) SourceCodeInfo.Freeze();
+    }
+
+    public const int NameFieldNumber = 1;
+    private string name_ = "";
+    internal string Name {
+      get { return name_; }
+      set {
+        pb::Freezable.CheckMutable(this);
+        name_ = value ?? "";
+      }
+    }
+
+    public const int PackageFieldNumber = 2;
+    private string package_ = "";
+    internal string Package {
+      get { return package_; }
+      set {
+        pb::Freezable.CheckMutable(this);
+        package_ = value ?? "";
+      }
+    }
+
+    public const int DependencyFieldNumber = 3;
+    private static readonly pb::FieldCodec<string> _repeated_dependency_codec
+        = pb::FieldCodec.ForString(26);
+    private readonly pbc::RepeatedField<string> dependency_ = new pbc::RepeatedField<string>();
+    internal pbc::RepeatedField<string> Dependency {
+      get { return dependency_; }
+    }
+
+    public const int PublicDependencyFieldNumber = 10;
+    private static readonly pb::FieldCodec<int> _repeated_publicDependency_codec
+        = pb::FieldCodec.ForInt32(80);
+    private readonly pbc::RepeatedField<int> publicDependency_ = new pbc::RepeatedField<int>();
+    internal pbc::RepeatedField<int> PublicDependency {
+      get { return publicDependency_; }
+    }
+
+    public const int WeakDependencyFieldNumber = 11;
+    private static readonly pb::FieldCodec<int> _repeated_weakDependency_codec
+        = pb::FieldCodec.ForInt32(88);
+    private readonly pbc::RepeatedField<int> weakDependency_ = new pbc::RepeatedField<int>();
+    internal pbc::RepeatedField<int> WeakDependency {
+      get { return weakDependency_; }
+    }
+
+    public const int MessageTypeFieldNumber = 4;
+    private static readonly pb::FieldCodec<global::Google.Protobuf.Reflection.DescriptorProto> _repeated_messageType_codec
+        = pb::FieldCodec.ForMessage(34, global::Google.Protobuf.Reflection.DescriptorProto.Parser);
+    private readonly pbc::RepeatedField<global::Google.Protobuf.Reflection.DescriptorProto> messageType_ = new pbc::RepeatedField<global::Google.Protobuf.Reflection.DescriptorProto>();
+    internal pbc::RepeatedField<global::Google.Protobuf.Reflection.DescriptorProto> MessageType {
+      get { return messageType_; }
+    }
+
+    public const int EnumTypeFieldNumber = 5;
+    private static readonly pb::FieldCodec<global::Google.Protobuf.Reflection.EnumDescriptorProto> _repeated_enumType_codec
+        = pb::FieldCodec.ForMessage(42, global::Google.Protobuf.Reflection.EnumDescriptorProto.Parser);
+    private readonly pbc::RepeatedField<global::Google.Protobuf.Reflection.EnumDescriptorProto> enumType_ = new pbc::RepeatedField<global::Google.Protobuf.Reflection.EnumDescriptorProto>();
+    internal pbc::RepeatedField<global::Google.Protobuf.Reflection.EnumDescriptorProto> EnumType {
+      get { return enumType_; }
+    }
+
+    public const int ServiceFieldNumber = 6;
+    private static readonly pb::FieldCodec<global::Google.Protobuf.Reflection.ServiceDescriptorProto> _repeated_service_codec
+        = pb::FieldCodec.ForMessage(50, global::Google.Protobuf.Reflection.ServiceDescriptorProto.Parser);
+    private readonly pbc::RepeatedField<global::Google.Protobuf.Reflection.ServiceDescriptorProto> service_ = new pbc::RepeatedField<global::Google.Protobuf.Reflection.ServiceDescriptorProto>();
+    internal pbc::RepeatedField<global::Google.Protobuf.Reflection.ServiceDescriptorProto> Service {
+      get { return service_; }
+    }
+
+    public const int ExtensionFieldNumber = 7;
+    private static readonly pb::FieldCodec<global::Google.Protobuf.Reflection.FieldDescriptorProto> _repeated_extension_codec
+        = pb::FieldCodec.ForMessage(58, global::Google.Protobuf.Reflection.FieldDescriptorProto.Parser);
+    private readonly pbc::RepeatedField<global::Google.Protobuf.Reflection.FieldDescriptorProto> extension_ = new pbc::RepeatedField<global::Google.Protobuf.Reflection.FieldDescriptorProto>();
+    internal pbc::RepeatedField<global::Google.Protobuf.Reflection.FieldDescriptorProto> Extension {
+      get { return extension_; }
+    }
+
+    public const int OptionsFieldNumber = 8;
+    private global::Google.Protobuf.Reflection.FileOptions options_;
+    internal global::Google.Protobuf.Reflection.FileOptions Options {
+      get { return options_; }
+      set {
+        pb::Freezable.CheckMutable(this);
+        options_ = value;
+      }
+    }
+
+    public const int SourceCodeInfoFieldNumber = 9;
+    private global::Google.Protobuf.Reflection.SourceCodeInfo sourceCodeInfo_;
+    internal global::Google.Protobuf.Reflection.SourceCodeInfo SourceCodeInfo {
+      get { return sourceCodeInfo_; }
+      set {
+        pb::Freezable.CheckMutable(this);
+        sourceCodeInfo_ = value;
+      }
+    }
+
+    public const int SyntaxFieldNumber = 12;
+    private string syntax_ = "";
+    internal string Syntax {
+      get { return syntax_; }
+      set {
+        pb::Freezable.CheckMutable(this);
+        syntax_ = value ?? "";
+      }
+    }
+
+    public override bool Equals(object other) {
+      return Equals(other as FileDescriptorProto);
+    }
+
+    public bool Equals(FileDescriptorProto other) {
+      if (ReferenceEquals(other, null)) {
+        return false;
+      }
+      if (ReferenceEquals(other, this)) {
+        return true;
+      }
+      if (Name != other.Name) return false;
+      if (Package != other.Package) return false;
+      if(!dependency_.Equals(other.dependency_)) return false;
+      if(!publicDependency_.Equals(other.publicDependency_)) return false;
+      if(!weakDependency_.Equals(other.weakDependency_)) return false;
+      if(!messageType_.Equals(other.messageType_)) return false;
+      if(!enumType_.Equals(other.enumType_)) return false;
+      if(!service_.Equals(other.service_)) return false;
+      if(!extension_.Equals(other.extension_)) return false;
+      if (!object.Equals(Options, other.Options)) return false;
+      if (!object.Equals(SourceCodeInfo, other.SourceCodeInfo)) return false;
+      if (Syntax != other.Syntax) return false;
+      return true;
+    }
+
+    public override int GetHashCode() {
+      int hash = 1;
+      if (Name.Length != 0) hash ^= Name.GetHashCode();
+      if (Package.Length != 0) hash ^= Package.GetHashCode();
+      hash ^= dependency_.GetHashCode();
+      hash ^= publicDependency_.GetHashCode();
+      hash ^= weakDependency_.GetHashCode();
+      hash ^= messageType_.GetHashCode();
+      hash ^= enumType_.GetHashCode();
+      hash ^= service_.GetHashCode();
+      hash ^= extension_.GetHashCode();
+      if (options_ != null) hash ^= Options.GetHashCode();
+      if (sourceCodeInfo_ != null) hash ^= SourceCodeInfo.GetHashCode();
+      if (Syntax.Length != 0) hash ^= Syntax.GetHashCode();
+      return hash;
+    }
+
+    public override string ToString() {
+      return pb::JsonFormatter.Default.Format(this);
+    }
+
+    public void WriteTo(pb::CodedOutputStream output) {
+      if (Name.Length != 0) {
+        output.WriteRawTag(10);
+        output.WriteString(Name);
+      }
+      if (Package.Length != 0) {
+        output.WriteRawTag(18);
+        output.WriteString(Package);
+      }
+      dependency_.WriteTo(output, _repeated_dependency_codec);
+      messageType_.WriteTo(output, _repeated_messageType_codec);
+      enumType_.WriteTo(output, _repeated_enumType_codec);
+      service_.WriteTo(output, _repeated_service_codec);
+      extension_.WriteTo(output, _repeated_extension_codec);
+      if (options_ != null) {
+        output.WriteRawTag(66);
+        output.WriteMessage(Options);
+      }
+      if (sourceCodeInfo_ != null) {
+        output.WriteRawTag(74);
+        output.WriteMessage(SourceCodeInfo);
+      }
+      publicDependency_.WriteTo(output, _repeated_publicDependency_codec);
+      weakDependency_.WriteTo(output, _repeated_weakDependency_codec);
+      if (Syntax.Length != 0) {
+        output.WriteRawTag(98);
+        output.WriteString(Syntax);
+      }
+    }
+
+    public int CalculateSize() {
+      int size = 0;
+      if (Name.Length != 0) {
+        size += 1 + pb::CodedOutputStream.ComputeStringSize(Name);
+      }
+      if (Package.Length != 0) {
+        size += 1 + pb::CodedOutputStream.ComputeStringSize(Package);
+      }
+      size += dependency_.CalculateSize(_repeated_dependency_codec);
+      size += publicDependency_.CalculateSize(_repeated_publicDependency_codec);
+      size += weakDependency_.CalculateSize(_repeated_weakDependency_codec);
+      size += messageType_.CalculateSize(_repeated_messageType_codec);
+      size += enumType_.CalculateSize(_repeated_enumType_codec);
+      size += service_.CalculateSize(_repeated_service_codec);
+      size += extension_.CalculateSize(_repeated_extension_codec);
+      if (options_ != null) {
+        size += 1 + pb::CodedOutputStream.ComputeMessageSize(Options);
+      }
+      if (sourceCodeInfo_ != null) {
+        size += 1 + pb::CodedOutputStream.ComputeMessageSize(SourceCodeInfo);
+      }
+      if (Syntax.Length != 0) {
+        size += 1 + pb::CodedOutputStream.ComputeStringSize(Syntax);
+      }
+      return size;
+    }
+
+    public void MergeFrom(FileDescriptorProto other) {
+      if (other == null) {
+        return;
+      }
+      if (other.Name.Length != 0) {
+        Name = other.Name;
+      }
+      if (other.Package.Length != 0) {
+        Package = other.Package;
+      }
+      dependency_.Add(other.dependency_);
+      publicDependency_.Add(other.publicDependency_);
+      weakDependency_.Add(other.weakDependency_);
+      messageType_.Add(other.messageType_);
+      enumType_.Add(other.enumType_);
+      service_.Add(other.service_);
+      extension_.Add(other.extension_);
+      if (other.options_ != null) {
+        if (options_ == null) {
+          options_ = new global::Google.Protobuf.Reflection.FileOptions();
+        }
+        Options.MergeFrom(other.Options);
+      }
+      if (other.sourceCodeInfo_ != null) {
+        if (sourceCodeInfo_ == null) {
+          sourceCodeInfo_ = new global::Google.Protobuf.Reflection.SourceCodeInfo();
+        }
+        SourceCodeInfo.MergeFrom(other.SourceCodeInfo);
+      }
+      if (other.Syntax.Length != 0) {
+        Syntax = other.Syntax;
+      }
+    }
+
+    public void MergeFrom(pb::CodedInputStream input) {
+      uint tag;
+      while (input.ReadTag(out tag)) {
+        switch(tag) {
+          case 0:
+            throw pb::InvalidProtocolBufferException.InvalidTag();
+          default:
+            if (pb::WireFormat.IsEndGroupTag(tag)) {
+              return;
+            }
+            break;
+          case 10: {
+            Name = input.ReadString();
+            break;
+          }
+          case 18: {
+            Package = input.ReadString();
+            break;
+          }
+          case 26: {
+            dependency_.AddEntriesFrom(input, _repeated_dependency_codec);
+            break;
+          }
+          case 34: {
+            messageType_.AddEntriesFrom(input, _repeated_messageType_codec);
+            break;
+          }
+          case 42: {
+            enumType_.AddEntriesFrom(input, _repeated_enumType_codec);
+            break;
+          }
+          case 50: {
+            service_.AddEntriesFrom(input, _repeated_service_codec);
+            break;
+          }
+          case 58: {
+            extension_.AddEntriesFrom(input, _repeated_extension_codec);
+            break;
+          }
+          case 66: {
+            if (options_ == null) {
+              options_ = new global::Google.Protobuf.Reflection.FileOptions();
+            }
+            input.ReadMessage(options_);
+            break;
+          }
+          case 74: {
+            if (sourceCodeInfo_ == null) {
+              sourceCodeInfo_ = new global::Google.Protobuf.Reflection.SourceCodeInfo();
+            }
+            input.ReadMessage(sourceCodeInfo_);
+            break;
+          }
+          case 82:
+          case 80: {
+            publicDependency_.AddEntriesFrom(input, _repeated_publicDependency_codec);
+            break;
+          }
+          case 90:
+          case 88: {
+            weakDependency_.AddEntriesFrom(input, _repeated_weakDependency_codec);
+            break;
+          }
+          case 98: {
+            Syntax = input.ReadString();
+            break;
+          }
+        }
+      }
+    }
+
+  }
+
+  [global::System.Diagnostics.DebuggerNonUserCodeAttribute()]
+  internal sealed partial class DescriptorProto : pb::IMessage<DescriptorProto> {
+    private static readonly pb::MessageParser<DescriptorProto> _parser = new pb::MessageParser<DescriptorProto>(() => new DescriptorProto());
+    public static pb::MessageParser<DescriptorProto> Parser { get { return _parser; } }
+
+    private static readonly string[] _fieldNames = new string[] { "enum_type", "extension", "extension_range", "field", "name", "nested_type", "oneof_decl", "options", "reserved_name", "reserved_range" };
+    private static readonly uint[] _fieldTags = new uint[] { 34, 50, 42, 18, 10, 26, 66, 58, 82, 74 };
+    public static pbr::MessageDescriptor Descriptor {
+      get { return global::Google.Protobuf.Reflection.DescriptorProtoFile.Descriptor.MessageTypes[2]; }
+    }
+
+    pbr::FieldAccessorTable pb::IReflectedMessage.Fields {
+      get { return global::Google.Protobuf.Reflection.DescriptorProtoFile.internal__static_google_protobuf_DescriptorProto__FieldAccessorTable; }
+    }
+
+    private bool _frozen = false;
+    public bool IsFrozen { get { return _frozen; } }
+
+    public DescriptorProto() {
+      OnConstruction();
+    }
+
+    partial void OnConstruction();
+
+    public DescriptorProto(DescriptorProto other) : this() {
+      name_ = other.name_;
+      field_ = other.field_.Clone();
+      extension_ = other.extension_.Clone();
+      nestedType_ = other.nestedType_.Clone();
+      enumType_ = other.enumType_.Clone();
+      extensionRange_ = other.extensionRange_.Clone();
+      oneofDecl_ = other.oneofDecl_.Clone();
+      Options = other.options_ != null ? other.Options.Clone() : null;
+      reservedRange_ = other.reservedRange_.Clone();
+      reservedName_ = other.reservedName_.Clone();
+    }
+
+    public DescriptorProto Clone() {
+      return new DescriptorProto(this);
+    }
+
+    public void Freeze() {
+      if (IsFrozen) {
+        return;
+      }
+      _frozen = true;
+      field_.Freeze();
+      extension_.Freeze();
+      nestedType_.Freeze();
+      enumType_.Freeze();
+      extensionRange_.Freeze();
+      oneofDecl_.Freeze();
+      if (options_ != null) Options.Freeze();
+      reservedRange_.Freeze();
+      reservedName_.Freeze();
+    }
+
+    public const int NameFieldNumber = 1;
+    private string name_ = "";
+    internal string Name {
+      get { return name_; }
+      set {
+        pb::Freezable.CheckMutable(this);
+        name_ = value ?? "";
+      }
+    }
+
+    public const int FieldFieldNumber = 2;
+    private static readonly pb::FieldCodec<global::Google.Protobuf.Reflection.FieldDescriptorProto> _repeated_field_codec
+        = pb::FieldCodec.ForMessage(18, global::Google.Protobuf.Reflection.FieldDescriptorProto.Parser);
+    private readonly pbc::RepeatedField<global::Google.Protobuf.Reflection.FieldDescriptorProto> field_ = new pbc::RepeatedField<global::Google.Protobuf.Reflection.FieldDescriptorProto>();
+    internal pbc::RepeatedField<global::Google.Protobuf.Reflection.FieldDescriptorProto> Field {
+      get { return field_; }
+    }
+
+    public const int ExtensionFieldNumber = 6;
+    private static readonly pb::FieldCodec<global::Google.Protobuf.Reflection.FieldDescriptorProto> _repeated_extension_codec
+        = pb::FieldCodec.ForMessage(50, global::Google.Protobuf.Reflection.FieldDescriptorProto.Parser);
+    private readonly pbc::RepeatedField<global::Google.Protobuf.Reflection.FieldDescriptorProto> extension_ = new pbc::RepeatedField<global::Google.Protobuf.Reflection.FieldDescriptorProto>();
+    internal pbc::RepeatedField<global::Google.Protobuf.Reflection.FieldDescriptorProto> Extension {
+      get { return extension_; }
+    }
+
+    public const int NestedTypeFieldNumber = 3;
+    private static readonly pb::FieldCodec<global::Google.Protobuf.Reflection.DescriptorProto> _repeated_nestedType_codec
+        = pb::FieldCodec.ForMessage(26, global::Google.Protobuf.Reflection.DescriptorProto.Parser);
+    private readonly pbc::RepeatedField<global::Google.Protobuf.Reflection.DescriptorProto> nestedType_ = new pbc::RepeatedField<global::Google.Protobuf.Reflection.DescriptorProto>();
+    internal pbc::RepeatedField<global::Google.Protobuf.Reflection.DescriptorProto> NestedType {
+      get { return nestedType_; }
+    }
+
+    public const int EnumTypeFieldNumber = 4;
+    private static readonly pb::FieldCodec<global::Google.Protobuf.Reflection.EnumDescriptorProto> _repeated_enumType_codec
+        = pb::FieldCodec.ForMessage(34, global::Google.Protobuf.Reflection.EnumDescriptorProto.Parser);
+    private readonly pbc::RepeatedField<global::Google.Protobuf.Reflection.EnumDescriptorProto> enumType_ = new pbc::RepeatedField<global::Google.Protobuf.Reflection.EnumDescriptorProto>();
+    internal pbc::RepeatedField<global::Google.Protobuf.Reflection.EnumDescriptorProto> EnumType {
+      get { return enumType_; }
+    }
+
+    public const int ExtensionRangeFieldNumber = 5;
+    private static readonly pb::FieldCodec<global::Google.Protobuf.Reflection.DescriptorProto.Types.ExtensionRange> _repeated_extensionRange_codec
+        = pb::FieldCodec.ForMessage(42, global::Google.Protobuf.Reflection.DescriptorProto.Types.ExtensionRange.Parser);
+    private readonly pbc::RepeatedField<global::Google.Protobuf.Reflection.DescriptorProto.Types.ExtensionRange> extensionRange_ = new pbc::RepeatedField<global::Google.Protobuf.Reflection.DescriptorProto.Types.ExtensionRange>();
+    internal pbc::RepeatedField<global::Google.Protobuf.Reflection.DescriptorProto.Types.ExtensionRange> ExtensionRange {
+      get { return extensionRange_; }
+    }
+
+    public const int OneofDeclFieldNumber = 8;
+    private static readonly pb::FieldCodec<global::Google.Protobuf.Reflection.OneofDescriptorProto> _repeated_oneofDecl_codec
+        = pb::FieldCodec.ForMessage(66, global::Google.Protobuf.Reflection.OneofDescriptorProto.Parser);
+    private readonly pbc::RepeatedField<global::Google.Protobuf.Reflection.OneofDescriptorProto> oneofDecl_ = new pbc::RepeatedField<global::Google.Protobuf.Reflection.OneofDescriptorProto>();
+    internal pbc::RepeatedField<global::Google.Protobuf.Reflection.OneofDescriptorProto> OneofDecl {
+      get { return oneofDecl_; }
+    }
+
+    public const int OptionsFieldNumber = 7;
+    private global::Google.Protobuf.Reflection.MessageOptions options_;
+    internal global::Google.Protobuf.Reflection.MessageOptions Options {
+      get { return options_; }
+      set {
+        pb::Freezable.CheckMutable(this);
+        options_ = value;
+      }
+    }
+
+    public const int ReservedRangeFieldNumber = 9;
+    private static readonly pb::FieldCodec<global::Google.Protobuf.Reflection.DescriptorProto.Types.ReservedRange> _repeated_reservedRange_codec
+        = pb::FieldCodec.ForMessage(74, global::Google.Protobuf.Reflection.DescriptorProto.Types.ReservedRange.Parser);
+    private readonly pbc::RepeatedField<global::Google.Protobuf.Reflection.DescriptorProto.Types.ReservedRange> reservedRange_ = new pbc::RepeatedField<global::Google.Protobuf.Reflection.DescriptorProto.Types.ReservedRange>();
+    internal pbc::RepeatedField<global::Google.Protobuf.Reflection.DescriptorProto.Types.ReservedRange> ReservedRange {
+      get { return reservedRange_; }
+    }
+
+    public const int ReservedNameFieldNumber = 10;
+    private static readonly pb::FieldCodec<string> _repeated_reservedName_codec
+        = pb::FieldCodec.ForString(82);
+    private readonly pbc::RepeatedField<string> reservedName_ = new pbc::RepeatedField<string>();
+    internal pbc::RepeatedField<string> ReservedName {
+      get { return reservedName_; }
+    }
+
+    public override bool Equals(object other) {
+      return Equals(other as DescriptorProto);
+    }
+
+    public bool Equals(DescriptorProto other) {
+      if (ReferenceEquals(other, null)) {
+        return false;
+      }
+      if (ReferenceEquals(other, this)) {
+        return true;
+      }
+      if (Name != other.Name) return false;
+      if(!field_.Equals(other.field_)) return false;
+      if(!extension_.Equals(other.extension_)) return false;
+      if(!nestedType_.Equals(other.nestedType_)) return false;
+      if(!enumType_.Equals(other.enumType_)) return false;
+      if(!extensionRange_.Equals(other.extensionRange_)) return false;
+      if(!oneofDecl_.Equals(other.oneofDecl_)) return false;
+      if (!object.Equals(Options, other.Options)) return false;
+      if(!reservedRange_.Equals(other.reservedRange_)) return false;
+      if(!reservedName_.Equals(other.reservedName_)) return false;
+      return true;
+    }
+
+    public override int GetHashCode() {
+      int hash = 1;
+      if (Name.Length != 0) hash ^= Name.GetHashCode();
+      hash ^= field_.GetHashCode();
+      hash ^= extension_.GetHashCode();
+      hash ^= nestedType_.GetHashCode();
+      hash ^= enumType_.GetHashCode();
+      hash ^= extensionRange_.GetHashCode();
+      hash ^= oneofDecl_.GetHashCode();
+      if (options_ != null) hash ^= Options.GetHashCode();
+      hash ^= reservedRange_.GetHashCode();
+      hash ^= reservedName_.GetHashCode();
+      return hash;
+    }
+
+    public override string ToString() {
+      return pb::JsonFormatter.Default.Format(this);
+    }
+
+    public void WriteTo(pb::CodedOutputStream output) {
+      if (Name.Length != 0) {
+        output.WriteRawTag(10);
+        output.WriteString(Name);
+      }
+      field_.WriteTo(output, _repeated_field_codec);
+      nestedType_.WriteTo(output, _repeated_nestedType_codec);
+      enumType_.WriteTo(output, _repeated_enumType_codec);
+      extensionRange_.WriteTo(output, _repeated_extensionRange_codec);
+      extension_.WriteTo(output, _repeated_extension_codec);
+      if (options_ != null) {
+        output.WriteRawTag(58);
+        output.WriteMessage(Options);
+      }
+      oneofDecl_.WriteTo(output, _repeated_oneofDecl_codec);
+      reservedRange_.WriteTo(output, _repeated_reservedRange_codec);
+      reservedName_.WriteTo(output, _repeated_reservedName_codec);
+    }
+
+    public int CalculateSize() {
+      int size = 0;
+      if (Name.Length != 0) {
+        size += 1 + pb::CodedOutputStream.ComputeStringSize(Name);
+      }
+      size += field_.CalculateSize(_repeated_field_codec);
+      size += extension_.CalculateSize(_repeated_extension_codec);
+      size += nestedType_.CalculateSize(_repeated_nestedType_codec);
+      size += enumType_.CalculateSize(_repeated_enumType_codec);
+      size += extensionRange_.CalculateSize(_repeated_extensionRange_codec);
+      size += oneofDecl_.CalculateSize(_repeated_oneofDecl_codec);
+      if (options_ != null) {
+        size += 1 + pb::CodedOutputStream.ComputeMessageSize(Options);
+      }
+      size += reservedRange_.CalculateSize(_repeated_reservedRange_codec);
+      size += reservedName_.CalculateSize(_repeated_reservedName_codec);
+      return size;
+    }
+
+    public void MergeFrom(DescriptorProto other) {
+      if (other == null) {
+        return;
+      }
+      if (other.Name.Length != 0) {
+        Name = other.Name;
+      }
+      field_.Add(other.field_);
+      extension_.Add(other.extension_);
+      nestedType_.Add(other.nestedType_);
+      enumType_.Add(other.enumType_);
+      extensionRange_.Add(other.extensionRange_);
+      oneofDecl_.Add(other.oneofDecl_);
+      if (other.options_ != null) {
+        if (options_ == null) {
+          options_ = new global::Google.Protobuf.Reflection.MessageOptions();
+        }
+        Options.MergeFrom(other.Options);
+      }
+      reservedRange_.Add(other.reservedRange_);
+      reservedName_.Add(other.reservedName_);
+    }
+
+    public void MergeFrom(pb::CodedInputStream input) {
+      uint tag;
+      while (input.ReadTag(out tag)) {
+        switch(tag) {
+          case 0:
+            throw pb::InvalidProtocolBufferException.InvalidTag();
+          default:
+            if (pb::WireFormat.IsEndGroupTag(tag)) {
+              return;
+            }
+            break;
+          case 10: {
+            Name = input.ReadString();
+            break;
+          }
+          case 18: {
+            field_.AddEntriesFrom(input, _repeated_field_codec);
+            break;
+          }
+          case 26: {
+            nestedType_.AddEntriesFrom(input, _repeated_nestedType_codec);
+            break;
+          }
+          case 34: {
+            enumType_.AddEntriesFrom(input, _repeated_enumType_codec);
+            break;
+          }
+          case 42: {
+            extensionRange_.AddEntriesFrom(input, _repeated_extensionRange_codec);
+            break;
+          }
+          case 50: {
+            extension_.AddEntriesFrom(input, _repeated_extension_codec);
+            break;
+          }
+          case 58: {
+            if (options_ == null) {
+              options_ = new global::Google.Protobuf.Reflection.MessageOptions();
+            }
+            input.ReadMessage(options_);
+            break;
+          }
+          case 66: {
+            oneofDecl_.AddEntriesFrom(input, _repeated_oneofDecl_codec);
+            break;
+          }
+          case 74: {
+            reservedRange_.AddEntriesFrom(input, _repeated_reservedRange_codec);
+            break;
+          }
+          case 82: {
+            reservedName_.AddEntriesFrom(input, _repeated_reservedName_codec);
+            break;
+          }
+        }
+      }
+    }
+
+    #region Nested types
+    [global::System.Diagnostics.DebuggerNonUserCodeAttribute()]
+    public static partial class Types {
+      [global::System.Diagnostics.DebuggerNonUserCodeAttribute()]
+      internal sealed partial class ExtensionRange : pb::IMessage<ExtensionRange> {
+        private static readonly pb::MessageParser<ExtensionRange> _parser = new pb::MessageParser<ExtensionRange>(() => new ExtensionRange());
+        public static pb::MessageParser<ExtensionRange> Parser { get { return _parser; } }
+
+        private static readonly string[] _fieldNames = new string[] { "end", "start" };
+        private static readonly uint[] _fieldTags = new uint[] { 16, 8 };
+        public static pbr::MessageDescriptor Descriptor {
+          get { return global::Google.Protobuf.Reflection.DescriptorProto.Descriptor.NestedTypes[0]; }
+        }
+
+        pbr::FieldAccessorTable pb::IReflectedMessage.Fields {
+          get { return global::Google.Protobuf.Reflection.DescriptorProtoFile.internal__static_google_protobuf_DescriptorProto_ExtensionRange__FieldAccessorTable; }
+        }
+
+        private bool _frozen = false;
+        public bool IsFrozen { get { return _frozen; } }
+
+        public ExtensionRange() {
+          OnConstruction();
+        }
+
+        partial void OnConstruction();
+
+        public ExtensionRange(ExtensionRange other) : this() {
+          start_ = other.start_;
+          end_ = other.end_;
+        }
+
+        public ExtensionRange Clone() {
+          return new ExtensionRange(this);
+        }
+
+        public void Freeze() {
+          if (IsFrozen) {
+            return;
+          }
+          _frozen = true;
+        }
+
+        public const int StartFieldNumber = 1;
+        private int start_;
+        internal int Start {
+          get { return start_; }
+          set {
+            pb::Freezable.CheckMutable(this);
+            start_ = value;
+          }
+        }
+
+        public const int EndFieldNumber = 2;
+        private int end_;
+        internal int End {
+          get { return end_; }
+          set {
+            pb::Freezable.CheckMutable(this);
+            end_ = value;
+          }
+        }
+
+        public override bool Equals(object other) {
+          return Equals(other as ExtensionRange);
+        }
+
+        public bool Equals(ExtensionRange other) {
+          if (ReferenceEquals(other, null)) {
+            return false;
+          }
+          if (ReferenceEquals(other, this)) {
+            return true;
+          }
+          if (Start != other.Start) return false;
+          if (End != other.End) return false;
+          return true;
+        }
+
+        public override int GetHashCode() {
+          int hash = 1;
+          if (Start != 0) hash ^= Start.GetHashCode();
+          if (End != 0) hash ^= End.GetHashCode();
+          return hash;
+        }
+
+        public override string ToString() {
+          return pb::JsonFormatter.Default.Format(this);
+        }
+
+        public void WriteTo(pb::CodedOutputStream output) {
+          if (Start != 0) {
+            output.WriteRawTag(8);
+            output.WriteInt32(Start);
+          }
+          if (End != 0) {
+            output.WriteRawTag(16);
+            output.WriteInt32(End);
+          }
+        }
+
+        public int CalculateSize() {
+          int size = 0;
+          if (Start != 0) {
+            size += 1 + pb::CodedOutputStream.ComputeInt32Size(Start);
+          }
+          if (End != 0) {
+            size += 1 + pb::CodedOutputStream.ComputeInt32Size(End);
+          }
+          return size;
+        }
+
+        public void MergeFrom(ExtensionRange other) {
+          if (other == null) {
+            return;
+          }
+          if (other.Start != 0) {
+            Start = other.Start;
+          }
+          if (other.End != 0) {
+            End = other.End;
+          }
+        }
+
+        public void MergeFrom(pb::CodedInputStream input) {
+          uint tag;
+          while (input.ReadTag(out tag)) {
+            switch(tag) {
+              case 0:
+                throw pb::InvalidProtocolBufferException.InvalidTag();
+              default:
+                if (pb::WireFormat.IsEndGroupTag(tag)) {
+                  return;
+                }
+                break;
+              case 8: {
+                Start = input.ReadInt32();
+                break;
+              }
+              case 16: {
+                End = input.ReadInt32();
+                break;
+              }
+            }
+          }
+        }
+
+      }
+
+      [global::System.Diagnostics.DebuggerNonUserCodeAttribute()]
+      internal sealed partial class ReservedRange : pb::IMessage<ReservedRange> {
+        private static readonly pb::MessageParser<ReservedRange> _parser = new pb::MessageParser<ReservedRange>(() => new ReservedRange());
+        public static pb::MessageParser<ReservedRange> Parser { get { return _parser; } }
+
+        private static readonly string[] _fieldNames = new string[] { "end", "start" };
+        private static readonly uint[] _fieldTags = new uint[] { 16, 8 };
+        public static pbr::MessageDescriptor Descriptor {
+          get { return global::Google.Protobuf.Reflection.DescriptorProto.Descriptor.NestedTypes[1]; }
+        }
+
+        pbr::FieldAccessorTable pb::IReflectedMessage.Fields {
+          get { return global::Google.Protobuf.Reflection.DescriptorProtoFile.internal__static_google_protobuf_DescriptorProto_ReservedRange__FieldAccessorTable; }
+        }
+
+        private bool _frozen = false;
+        public bool IsFrozen { get { return _frozen; } }
+
+        public ReservedRange() {
+          OnConstruction();
+        }
+
+        partial void OnConstruction();
+
+        public ReservedRange(ReservedRange other) : this() {
+          start_ = other.start_;
+          end_ = other.end_;
+        }
+
+        public ReservedRange Clone() {
+          return new ReservedRange(this);
+        }
+
+        public void Freeze() {
+          if (IsFrozen) {
+            return;
+          }
+          _frozen = true;
+        }
+
+        public const int StartFieldNumber = 1;
+        private int start_;
+        internal int Start {
+          get { return start_; }
+          set {
+            pb::Freezable.CheckMutable(this);
+            start_ = value;
+          }
+        }
+
+        public const int EndFieldNumber = 2;
+        private int end_;
+        internal int End {
+          get { return end_; }
+          set {
+            pb::Freezable.CheckMutable(this);
+            end_ = value;
+          }
+        }
+
+        public override bool Equals(object other) {
+          return Equals(other as ReservedRange);
+        }
+
+        public bool Equals(ReservedRange other) {
+          if (ReferenceEquals(other, null)) {
+            return false;
+          }
+          if (ReferenceEquals(other, this)) {
+            return true;
+          }
+          if (Start != other.Start) return false;
+          if (End != other.End) return false;
+          return true;
+        }
+
+        public override int GetHashCode() {
+          int hash = 1;
+          if (Start != 0) hash ^= Start.GetHashCode();
+          if (End != 0) hash ^= End.GetHashCode();
+          return hash;
+        }
+
+        public override string ToString() {
+          return pb::JsonFormatter.Default.Format(this);
+        }
+
+        public void WriteTo(pb::CodedOutputStream output) {
+          if (Start != 0) {
+            output.WriteRawTag(8);
+            output.WriteInt32(Start);
+          }
+          if (End != 0) {
+            output.WriteRawTag(16);
+            output.WriteInt32(End);
+          }
+        }
+
+        public int CalculateSize() {
+          int size = 0;
+          if (Start != 0) {
+            size += 1 + pb::CodedOutputStream.ComputeInt32Size(Start);
+          }
+          if (End != 0) {
+            size += 1 + pb::CodedOutputStream.ComputeInt32Size(End);
+          }
+          return size;
+        }
+
+        public void MergeFrom(ReservedRange other) {
+          if (other == null) {
+            return;
+          }
+          if (other.Start != 0) {
+            Start = other.Start;
+          }
+          if (other.End != 0) {
+            End = other.End;
+          }
+        }
+
+        public void MergeFrom(pb::CodedInputStream input) {
+          uint tag;
+          while (input.ReadTag(out tag)) {
+            switch(tag) {
+              case 0:
+                throw pb::InvalidProtocolBufferException.InvalidTag();
+              default:
+                if (pb::WireFormat.IsEndGroupTag(tag)) {
+                  return;
+                }
+                break;
+              case 8: {
+                Start = input.ReadInt32();
+                break;
+              }
+              case 16: {
+                End = input.ReadInt32();
+                break;
+              }
+            }
+          }
+        }
+
+      }
+
+    }
+    #endregion
+
+  }
+
+  [global::System.Diagnostics.DebuggerNonUserCodeAttribute()]
+  internal sealed partial class FieldDescriptorProto : pb::IMessage<FieldDescriptorProto> {
+    private static readonly pb::MessageParser<FieldDescriptorProto> _parser = new pb::MessageParser<FieldDescriptorProto>(() => new FieldDescriptorProto());
+    public static pb::MessageParser<FieldDescriptorProto> Parser { get { return _parser; } }
+
+    private static readonly string[] _fieldNames = new string[] { "default_value", "extendee", "label", "name", "number", "oneof_index", "options", "type", "type_name" };
+    private static readonly uint[] _fieldTags = new uint[] { 58, 18, 32, 10, 24, 72, 66, 40, 50 };
+    public static pbr::MessageDescriptor Descriptor {
+      get { return global::Google.Protobuf.Reflection.DescriptorProtoFile.Descriptor.MessageTypes[3]; }
+    }
+
+    pbr::FieldAccessorTable pb::IReflectedMessage.Fields {
+      get { return global::Google.Protobuf.Reflection.DescriptorProtoFile.internal__static_google_protobuf_FieldDescriptorProto__FieldAccessorTable; }
+    }
+
+    private bool _frozen = false;
+    public bool IsFrozen { get { return _frozen; } }
+
+    public FieldDescriptorProto() {
+      OnConstruction();
+    }
+
+    partial void OnConstruction();
+
+    public FieldDescriptorProto(FieldDescriptorProto other) : this() {
+      name_ = other.name_;
+      number_ = other.number_;
+      label_ = other.label_;
+      type_ = other.type_;
+      typeName_ = other.typeName_;
+      extendee_ = other.extendee_;
+      defaultValue_ = other.defaultValue_;
+      oneofIndex_ = other.oneofIndex_;
+      Options = other.options_ != null ? other.Options.Clone() : null;
+    }
+
+    public FieldDescriptorProto Clone() {
+      return new FieldDescriptorProto(this);
+    }
+
+    public void Freeze() {
+      if (IsFrozen) {
+        return;
+      }
+      _frozen = true;
+      if (options_ != null) Options.Freeze();
+    }
+
+    public const int NameFieldNumber = 1;
+    private string name_ = "";
+    internal string Name {
+      get { return name_; }
+      set {
+        pb::Freezable.CheckMutable(this);
+        name_ = value ?? "";
+      }
+    }
+
+    public const int NumberFieldNumber = 3;
+    private int number_;
+    internal int Number {
+      get { return number_; }
+      set {
+        pb::Freezable.CheckMutable(this);
+        number_ = value;
+      }
+    }
+
+    public const int LabelFieldNumber = 4;
+    private global::Google.Protobuf.Reflection.FieldDescriptorProto.Types.Label label_ = global::Google.Protobuf.Reflection.FieldDescriptorProto.Types.Label.LABEL_OPTIONAL;
+    internal global::Google.Protobuf.Reflection.FieldDescriptorProto.Types.Label Label {
+      get { return label_; }
+      set {
+        pb::Freezable.CheckMutable(this);
+        label_ = value;
+      }
+    }
+
+    public const int TypeFieldNumber = 5;
+    private global::Google.Protobuf.Reflection.FieldDescriptorProto.Types.Type type_ = global::Google.Protobuf.Reflection.FieldDescriptorProto.Types.Type.TYPE_DOUBLE;
+    internal global::Google.Protobuf.Reflection.FieldDescriptorProto.Types.Type Type {
+      get { return type_; }
+      set {
+        pb::Freezable.CheckMutable(this);
+        type_ = value;
+      }
+    }
+
+    public const int TypeNameFieldNumber = 6;
+    private string typeName_ = "";
+    internal string TypeName {
+      get { return typeName_; }
+      set {
+        pb::Freezable.CheckMutable(this);
+        typeName_ = value ?? "";
+      }
+    }
+
+    public const int ExtendeeFieldNumber = 2;
+    private string extendee_ = "";
+    internal string Extendee {
+      get { return extendee_; }
+      set {
+        pb::Freezable.CheckMutable(this);
+        extendee_ = value ?? "";
+      }
+    }
+
+    public const int DefaultValueFieldNumber = 7;
+    private string defaultValue_ = "";
+    internal string DefaultValue {
+      get { return defaultValue_; }
+      set {
+        pb::Freezable.CheckMutable(this);
+        defaultValue_ = value ?? "";
+      }
+    }
+
+    public const int OneofIndexFieldNumber = 9;
+    private int oneofIndex_;
+    internal int OneofIndex {
+      get { return oneofIndex_; }
+      set {
+        pb::Freezable.CheckMutable(this);
+        oneofIndex_ = value;
+      }
+    }
+
+    public const int OptionsFieldNumber = 8;
+    private global::Google.Protobuf.Reflection.FieldOptions options_;
+    internal global::Google.Protobuf.Reflection.FieldOptions Options {
+      get { return options_; }
+      set {
+        pb::Freezable.CheckMutable(this);
+        options_ = value;
+      }
+    }
+
+    public override bool Equals(object other) {
+      return Equals(other as FieldDescriptorProto);
+    }
+
+    public bool Equals(FieldDescriptorProto other) {
+      if (ReferenceEquals(other, null)) {
+        return false;
+      }
+      if (ReferenceEquals(other, this)) {
+        return true;
+      }
+      if (Name != other.Name) return false;
+      if (Number != other.Number) return false;
+      if (Label != other.Label) return false;
+      if (Type != other.Type) return false;
+      if (TypeName != other.TypeName) return false;
+      if (Extendee != other.Extendee) return false;
+      if (DefaultValue != other.DefaultValue) return false;
+      if (OneofIndex != other.OneofIndex) return false;
+      if (!object.Equals(Options, other.Options)) return false;
+      return true;
+    }
+
+    public override int GetHashCode() {
+      int hash = 1;
+      if (Name.Length != 0) hash ^= Name.GetHashCode();
+      if (Number != 0) hash ^= Number.GetHashCode();
+      if (Label != global::Google.Protobuf.Reflection.FieldDescriptorProto.Types.Label.LABEL_OPTIONAL) hash ^= Label.GetHashCode();
+      if (Type != global::Google.Protobuf.Reflection.FieldDescriptorProto.Types.Type.TYPE_DOUBLE) hash ^= Type.GetHashCode();
+      if (TypeName.Length != 0) hash ^= TypeName.GetHashCode();
+      if (Extendee.Length != 0) hash ^= Extendee.GetHashCode();
+      if (DefaultValue.Length != 0) hash ^= DefaultValue.GetHashCode();
+      if (OneofIndex != 0) hash ^= OneofIndex.GetHashCode();
+      if (options_ != null) hash ^= Options.GetHashCode();
+      return hash;
+    }
+
+    public override string ToString() {
+      return pb::JsonFormatter.Default.Format(this);
+    }
+
+    public void WriteTo(pb::CodedOutputStream output) {
+      if (Name.Length != 0) {
+        output.WriteRawTag(10);
+        output.WriteString(Name);
+      }
+      if (Extendee.Length != 0) {
+        output.WriteRawTag(18);
+        output.WriteString(Extendee);
+      }
+      if (Number != 0) {
+        output.WriteRawTag(24);
+        output.WriteInt32(Number);
+      }
+      if (Label != global::Google.Protobuf.Reflection.FieldDescriptorProto.Types.Label.LABEL_OPTIONAL) {
+        output.WriteRawTag(32);
+        output.WriteEnum((int) Label);
+      }
+      if (Type != global::Google.Protobuf.Reflection.FieldDescriptorProto.Types.Type.TYPE_DOUBLE) {
+        output.WriteRawTag(40);
+        output.WriteEnum((int) Type);
+      }
+      if (TypeName.Length != 0) {
+        output.WriteRawTag(50);
+        output.WriteString(TypeName);
+      }
+      if (DefaultValue.Length != 0) {
+        output.WriteRawTag(58);
+        output.WriteString(DefaultValue);
+      }
+      if (options_ != null) {
+        output.WriteRawTag(66);
+        output.WriteMessage(Options);
+      }
+      if (OneofIndex != 0) {
+        output.WriteRawTag(72);
+        output.WriteInt32(OneofIndex);
+      }
+    }
+
+    public int CalculateSize() {
+      int size = 0;
+      if (Name.Length != 0) {
+        size += 1 + pb::CodedOutputStream.ComputeStringSize(Name);
+      }
+      if (Number != 0) {
+        size += 1 + pb::CodedOutputStream.ComputeInt32Size(Number);
+      }
+      if (Label != global::Google.Protobuf.Reflection.FieldDescriptorProto.Types.Label.LABEL_OPTIONAL) {
+        size += 1 + pb::CodedOutputStream.ComputeEnumSize((int) Label);
+      }
+      if (Type != global::Google.Protobuf.Reflection.FieldDescriptorProto.Types.Type.TYPE_DOUBLE) {
+        size += 1 + pb::CodedOutputStream.ComputeEnumSize((int) Type);
+      }
+      if (TypeName.Length != 0) {
+        size += 1 + pb::CodedOutputStream.ComputeStringSize(TypeName);
+      }
+      if (Extendee.Length != 0) {
+        size += 1 + pb::CodedOutputStream.ComputeStringSize(Extendee);
+      }
+      if (DefaultValue.Length != 0) {
+        size += 1 + pb::CodedOutputStream.ComputeStringSize(DefaultValue);
+      }
+      if (OneofIndex != 0) {
+        size += 1 + pb::CodedOutputStream.ComputeInt32Size(OneofIndex);
+      }
+      if (options_ != null) {
+        size += 1 + pb::CodedOutputStream.ComputeMessageSize(Options);
+      }
+      return size;
+    }
+
+    public void MergeFrom(FieldDescriptorProto other) {
+      if (other == null) {
+        return;
+      }
+      if (other.Name.Length != 0) {
+        Name = other.Name;
+      }
+      if (other.Number != 0) {
+        Number = other.Number;
+      }
+      if (other.Label != global::Google.Protobuf.Reflection.FieldDescriptorProto.Types.Label.LABEL_OPTIONAL) {
+        Label = other.Label;
+      }
+      if (other.Type != global::Google.Protobuf.Reflection.FieldDescriptorProto.Types.Type.TYPE_DOUBLE) {
+        Type = other.Type;
+      }
+      if (other.TypeName.Length != 0) {
+        TypeName = other.TypeName;
+      }
+      if (other.Extendee.Length != 0) {
+        Extendee = other.Extendee;
+      }
+      if (other.DefaultValue.Length != 0) {
+        DefaultValue = other.DefaultValue;
+      }
+      if (other.OneofIndex != 0) {
+        OneofIndex = other.OneofIndex;
+      }
+      if (other.options_ != null) {
+        if (options_ == null) {
+          options_ = new global::Google.Protobuf.Reflection.FieldOptions();
+        }
+        Options.MergeFrom(other.Options);
+      }
+    }
+
+    public void MergeFrom(pb::CodedInputStream input) {
+      uint tag;
+      while (input.ReadTag(out tag)) {
+        switch(tag) {
+          case 0:
+            throw pb::InvalidProtocolBufferException.InvalidTag();
+          default:
+            if (pb::WireFormat.IsEndGroupTag(tag)) {
+              return;
+            }
+            break;
+          case 10: {
+            Name = input.ReadString();
+            break;
+          }
+          case 18: {
+            Extendee = input.ReadString();
+            break;
+          }
+          case 24: {
+            Number = input.ReadInt32();
+            break;
+          }
+          case 32: {
+            label_ = (global::Google.Protobuf.Reflection.FieldDescriptorProto.Types.Label) input.ReadEnum();
+            break;
+          }
+          case 40: {
+            type_ = (global::Google.Protobuf.Reflection.FieldDescriptorProto.Types.Type) input.ReadEnum();
+            break;
+          }
+          case 50: {
+            TypeName = input.ReadString();
+            break;
+          }
+          case 58: {
+            DefaultValue = input.ReadString();
+            break;
+          }
+          case 66: {
+            if (options_ == null) {
+              options_ = new global::Google.Protobuf.Reflection.FieldOptions();
+            }
+            input.ReadMessage(options_);
+            break;
+          }
+          case 72: {
+            OneofIndex = input.ReadInt32();
+            break;
+          }
+        }
+      }
+    }
+
+    #region Nested types
+    [global::System.Diagnostics.DebuggerNonUserCodeAttribute()]
+    public static partial class Types {
+      internal enum Type {
+        TYPE_DOUBLE = 1,
+        TYPE_FLOAT = 2,
+        TYPE_INT64 = 3,
+        TYPE_UINT64 = 4,
+        TYPE_INT32 = 5,
+        TYPE_FIXED64 = 6,
+        TYPE_FIXED32 = 7,
+        TYPE_BOOL = 8,
+        TYPE_STRING = 9,
+        TYPE_GROUP = 10,
+        TYPE_MESSAGE = 11,
+        TYPE_BYTES = 12,
+        TYPE_UINT32 = 13,
+        TYPE_ENUM = 14,
+        TYPE_SFIXED32 = 15,
+        TYPE_SFIXED64 = 16,
+        TYPE_SINT32 = 17,
+        TYPE_SINT64 = 18,
+      }
+
+      internal enum Label {
+        LABEL_OPTIONAL = 1,
+        LABEL_REQUIRED = 2,
+        LABEL_REPEATED = 3,
+      }
+
+    }
+    #endregion
+
+  }
+
+  [global::System.Diagnostics.DebuggerNonUserCodeAttribute()]
+  internal sealed partial class OneofDescriptorProto : pb::IMessage<OneofDescriptorProto> {
+    private static readonly pb::MessageParser<OneofDescriptorProto> _parser = new pb::MessageParser<OneofDescriptorProto>(() => new OneofDescriptorProto());
+    public static pb::MessageParser<OneofDescriptorProto> Parser { get { return _parser; } }
+
+    private static readonly string[] _fieldNames = new string[] { "name" };
+    private static readonly uint[] _fieldTags = new uint[] { 10 };
+    public static pbr::MessageDescriptor Descriptor {
+      get { return global::Google.Protobuf.Reflection.DescriptorProtoFile.Descriptor.MessageTypes[4]; }
+    }
+
+    pbr::FieldAccessorTable pb::IReflectedMessage.Fields {
+      get { return global::Google.Protobuf.Reflection.DescriptorProtoFile.internal__static_google_protobuf_OneofDescriptorProto__FieldAccessorTable; }
+    }
+
+    private bool _frozen = false;
+    public bool IsFrozen { get { return _frozen; } }
+
+    public OneofDescriptorProto() {
+      OnConstruction();
+    }
+
+    partial void OnConstruction();
+
+    public OneofDescriptorProto(OneofDescriptorProto other) : this() {
+      name_ = other.name_;
+    }
+
+    public OneofDescriptorProto Clone() {
+      return new OneofDescriptorProto(this);
+    }
+
+    public void Freeze() {
+      if (IsFrozen) {
+        return;
+      }
+      _frozen = true;
+    }
+
+    public const int NameFieldNumber = 1;
+    private string name_ = "";
+    internal string Name {
+      get { return name_; }
+      set {
+        pb::Freezable.CheckMutable(this);
+        name_ = value ?? "";
+      }
+    }
+
+    public override bool Equals(object other) {
+      return Equals(other as OneofDescriptorProto);
+    }
+
+    public bool Equals(OneofDescriptorProto other) {
+      if (ReferenceEquals(other, null)) {
+        return false;
+      }
+      if (ReferenceEquals(other, this)) {
+        return true;
+      }
+      if (Name != other.Name) return false;
+      return true;
+    }
+
+    public override int GetHashCode() {
+      int hash = 1;
+      if (Name.Length != 0) hash ^= Name.GetHashCode();
+      return hash;
+    }
+
+    public override string ToString() {
+      return pb::JsonFormatter.Default.Format(this);
+    }
+
+    public void WriteTo(pb::CodedOutputStream output) {
+      if (Name.Length != 0) {
+        output.WriteRawTag(10);
+        output.WriteString(Name);
+      }
+    }
+
+    public int CalculateSize() {
+      int size = 0;
+      if (Name.Length != 0) {
+        size += 1 + pb::CodedOutputStream.ComputeStringSize(Name);
+      }
+      return size;
+    }
+
+    public void MergeFrom(OneofDescriptorProto other) {
+      if (other == null) {
+        return;
+      }
+      if (other.Name.Length != 0) {
+        Name = other.Name;
+      }
+    }
+
+    public void MergeFrom(pb::CodedInputStream input) {
+      uint tag;
+      while (input.ReadTag(out tag)) {
+        switch(tag) {
+          case 0:
+            throw pb::InvalidProtocolBufferException.InvalidTag();
+          default:
+            if (pb::WireFormat.IsEndGroupTag(tag)) {
+              return;
+            }
+            break;
+          case 10: {
+            Name = input.ReadString();
+            break;
+          }
+        }
+      }
+    }
+
+  }
+
+  [global::System.Diagnostics.DebuggerNonUserCodeAttribute()]
+  internal sealed partial class EnumDescriptorProto : pb::IMessage<EnumDescriptorProto> {
+    private static readonly pb::MessageParser<EnumDescriptorProto> _parser = new pb::MessageParser<EnumDescriptorProto>(() => new EnumDescriptorProto());
+    public static pb::MessageParser<EnumDescriptorProto> Parser { get { return _parser; } }
+
+    private static readonly string[] _fieldNames = new string[] { "name", "options", "value" };
+    private static readonly uint[] _fieldTags = new uint[] { 10, 26, 18 };
+    public static pbr::MessageDescriptor Descriptor {
+      get { return global::Google.Protobuf.Reflection.DescriptorProtoFile.Descriptor.MessageTypes[5]; }
+    }
+
+    pbr::FieldAccessorTable pb::IReflectedMessage.Fields {
+      get { return global::Google.Protobuf.Reflection.DescriptorProtoFile.internal__static_google_protobuf_EnumDescriptorProto__FieldAccessorTable; }
+    }
+
+    private bool _frozen = false;
+    public bool IsFrozen { get { return _frozen; } }
+
+    public EnumDescriptorProto() {
+      OnConstruction();
+    }
+
+    partial void OnConstruction();
+
+    public EnumDescriptorProto(EnumDescriptorProto other) : this() {
+      name_ = other.name_;
+      value_ = other.value_.Clone();
+      Options = other.options_ != null ? other.Options.Clone() : null;
+    }
+
+    public EnumDescriptorProto Clone() {
+      return new EnumDescriptorProto(this);
+    }
+
+    public void Freeze() {
+      if (IsFrozen) {
+        return;
+      }
+      _frozen = true;
+      value_.Freeze();
+      if (options_ != null) Options.Freeze();
+    }
+
+    public const int NameFieldNumber = 1;
+    private string name_ = "";
+    internal string Name {
+      get { return name_; }
+      set {
+        pb::Freezable.CheckMutable(this);
+        name_ = value ?? "";
+      }
+    }
+
+    public const int ValueFieldNumber = 2;
+    private static readonly pb::FieldCodec<global::Google.Protobuf.Reflection.EnumValueDescriptorProto> _repeated_value_codec
+        = pb::FieldCodec.ForMessage(18, global::Google.Protobuf.Reflection.EnumValueDescriptorProto.Parser);
+    private readonly pbc::RepeatedField<global::Google.Protobuf.Reflection.EnumValueDescriptorProto> value_ = new pbc::RepeatedField<global::Google.Protobuf.Reflection.EnumValueDescriptorProto>();
+    internal pbc::RepeatedField<global::Google.Protobuf.Reflection.EnumValueDescriptorProto> Value {
+      get { return value_; }
+    }
+
+    public const int OptionsFieldNumber = 3;
+    private global::Google.Protobuf.Reflection.EnumOptions options_;
+    internal global::Google.Protobuf.Reflection.EnumOptions Options {
+      get { return options_; }
+      set {
+        pb::Freezable.CheckMutable(this);
+        options_ = value;
+      }
+    }
+
+    public override bool Equals(object other) {
+      return Equals(other as EnumDescriptorProto);
+    }
+
+    public bool Equals(EnumDescriptorProto other) {
+      if (ReferenceEquals(other, null)) {
+        return false;
+      }
+      if (ReferenceEquals(other, this)) {
+        return true;
+      }
+      if (Name != other.Name) return false;
+      if(!value_.Equals(other.value_)) return false;
+      if (!object.Equals(Options, other.Options)) return false;
+      return true;
+    }
+
+    public override int GetHashCode() {
+      int hash = 1;
+      if (Name.Length != 0) hash ^= Name.GetHashCode();
+      hash ^= value_.GetHashCode();
+      if (options_ != null) hash ^= Options.GetHashCode();
+      return hash;
+    }
+
+    public override string ToString() {
+      return pb::JsonFormatter.Default.Format(this);
+    }
+
+    public void WriteTo(pb::CodedOutputStream output) {
+      if (Name.Length != 0) {
+        output.WriteRawTag(10);
+        output.WriteString(Name);
+      }
+      value_.WriteTo(output, _repeated_value_codec);
+      if (options_ != null) {
+        output.WriteRawTag(26);
+        output.WriteMessage(Options);
+      }
+    }
+
+    public int CalculateSize() {
+      int size = 0;
+      if (Name.Length != 0) {
+        size += 1 + pb::CodedOutputStream.ComputeStringSize(Name);
+      }
+      size += value_.CalculateSize(_repeated_value_codec);
+      if (options_ != null) {
+        size += 1 + pb::CodedOutputStream.ComputeMessageSize(Options);
+      }
+      return size;
+    }
+
+    public void MergeFrom(EnumDescriptorProto other) {
+      if (other == null) {
+        return;
+      }
+      if (other.Name.Length != 0) {
+        Name = other.Name;
+      }
+      value_.Add(other.value_);
+      if (other.options_ != null) {
+        if (options_ == null) {
+          options_ = new global::Google.Protobuf.Reflection.EnumOptions();
+        }
+        Options.MergeFrom(other.Options);
+      }
+    }
+
+    public void MergeFrom(pb::CodedInputStream input) {
+      uint tag;
+      while (input.ReadTag(out tag)) {
+        switch(tag) {
+          case 0:
+            throw pb::InvalidProtocolBufferException.InvalidTag();
+          default:
+            if (pb::WireFormat.IsEndGroupTag(tag)) {
+              return;
+            }
+            break;
+          case 10: {
+            Name = input.ReadString();
+            break;
+          }
+          case 18: {
+            value_.AddEntriesFrom(input, _repeated_value_codec);
+            break;
+          }
+          case 26: {
+            if (options_ == null) {
+              options_ = new global::Google.Protobuf.Reflection.EnumOptions();
+            }
+            input.ReadMessage(options_);
+            break;
+          }
+        }
+      }
+    }
+
+  }
+
+  [global::System.Diagnostics.DebuggerNonUserCodeAttribute()]
+  internal sealed partial class EnumValueDescriptorProto : pb::IMessage<EnumValueDescriptorProto> {
+    private static readonly pb::MessageParser<EnumValueDescriptorProto> _parser = new pb::MessageParser<EnumValueDescriptorProto>(() => new EnumValueDescriptorProto());
+    public static pb::MessageParser<EnumValueDescriptorProto> Parser { get { return _parser; } }
+
+    private static readonly string[] _fieldNames = new string[] { "name", "number", "options" };
+    private static readonly uint[] _fieldTags = new uint[] { 10, 16, 26 };
+    public static pbr::MessageDescriptor Descriptor {
+      get { return global::Google.Protobuf.Reflection.DescriptorProtoFile.Descriptor.MessageTypes[6]; }
+    }
+
+    pbr::FieldAccessorTable pb::IReflectedMessage.Fields {
+      get { return global::Google.Protobuf.Reflection.DescriptorProtoFile.internal__static_google_protobuf_EnumValueDescriptorProto__FieldAccessorTable; }
+    }
+
+    private bool _frozen = false;
+    public bool IsFrozen { get { return _frozen; } }
+
+    public EnumValueDescriptorProto() {
+      OnConstruction();
+    }
+
+    partial void OnConstruction();
+
+    public EnumValueDescriptorProto(EnumValueDescriptorProto other) : this() {
+      name_ = other.name_;
+      number_ = other.number_;
+      Options = other.options_ != null ? other.Options.Clone() : null;
+    }
+
+    public EnumValueDescriptorProto Clone() {
+      return new EnumValueDescriptorProto(this);
+    }
+
+    public void Freeze() {
+      if (IsFrozen) {
+        return;
+      }
+      _frozen = true;
+      if (options_ != null) Options.Freeze();
+    }
+
+    public const int NameFieldNumber = 1;
+    private string name_ = "";
+    internal string Name {
+      get { return name_; }
+      set {
+        pb::Freezable.CheckMutable(this);
+        name_ = value ?? "";
+      }
+    }
+
+    public const int NumberFieldNumber = 2;
+    private int number_;
+    internal int Number {
+      get { return number_; }
+      set {
+        pb::Freezable.CheckMutable(this);
+        number_ = value;
+      }
+    }
+
+    public const int OptionsFieldNumber = 3;
+    private global::Google.Protobuf.Reflection.EnumValueOptions options_;
+    internal global::Google.Protobuf.Reflection.EnumValueOptions Options {
+      get { return options_; }
+      set {
+        pb::Freezable.CheckMutable(this);
+        options_ = value;
+      }
+    }
+
+    public override bool Equals(object other) {
+      return Equals(other as EnumValueDescriptorProto);
+    }
+
+    public bool Equals(EnumValueDescriptorProto other) {
+      if (ReferenceEquals(other, null)) {
+        return false;
+      }
+      if (ReferenceEquals(other, this)) {
+        return true;
+      }
+      if (Name != other.Name) return false;
+      if (Number != other.Number) return false;
+      if (!object.Equals(Options, other.Options)) return false;
+      return true;
+    }
+
+    public override int GetHashCode() {
+      int hash = 1;
+      if (Name.Length != 0) hash ^= Name.GetHashCode();
+      if (Number != 0) hash ^= Number.GetHashCode();
+      if (options_ != null) hash ^= Options.GetHashCode();
+      return hash;
+    }
+
+    public override string ToString() {
+      return pb::JsonFormatter.Default.Format(this);
+    }
+
+    public void WriteTo(pb::CodedOutputStream output) {
+      if (Name.Length != 0) {
+        output.WriteRawTag(10);
+        output.WriteString(Name);
+      }
+      if (Number != 0) {
+        output.WriteRawTag(16);
+        output.WriteInt32(Number);
+      }
+      if (options_ != null) {
+        output.WriteRawTag(26);
+        output.WriteMessage(Options);
+      }
+    }
+
+    public int CalculateSize() {
+      int size = 0;
+      if (Name.Length != 0) {
+        size += 1 + pb::CodedOutputStream.ComputeStringSize(Name);
+      }
+      if (Number != 0) {
+        size += 1 + pb::CodedOutputStream.ComputeInt32Size(Number);
+      }
+      if (options_ != null) {
+        size += 1 + pb::CodedOutputStream.ComputeMessageSize(Options);
+      }
+      return size;
+    }
+
+    public void MergeFrom(EnumValueDescriptorProto other) {
+      if (other == null) {
+        return;
+      }
+      if (other.Name.Length != 0) {
+        Name = other.Name;
+      }
+      if (other.Number != 0) {
+        Number = other.Number;
+      }
+      if (other.options_ != null) {
+        if (options_ == null) {
+          options_ = new global::Google.Protobuf.Reflection.EnumValueOptions();
+        }
+        Options.MergeFrom(other.Options);
+      }
+    }
+
+    public void MergeFrom(pb::CodedInputStream input) {
+      uint tag;
+      while (input.ReadTag(out tag)) {
+        switch(tag) {
+          case 0:
+            throw pb::InvalidProtocolBufferException.InvalidTag();
+          default:
+            if (pb::WireFormat.IsEndGroupTag(tag)) {
+              return;
+            }
+            break;
+          case 10: {
+            Name = input.ReadString();
+            break;
+          }
+          case 16: {
+            Number = input.ReadInt32();
+            break;
+          }
+          case 26: {
+            if (options_ == null) {
+              options_ = new global::Google.Protobuf.Reflection.EnumValueOptions();
+            }
+            input.ReadMessage(options_);
+            break;
+          }
+        }
+      }
+    }
+
+  }
+
+  [global::System.Diagnostics.DebuggerNonUserCodeAttribute()]
+  internal sealed partial class ServiceDescriptorProto : pb::IMessage<ServiceDescriptorProto> {
+    private static readonly pb::MessageParser<ServiceDescriptorProto> _parser = new pb::MessageParser<ServiceDescriptorProto>(() => new ServiceDescriptorProto());
+    public static pb::MessageParser<ServiceDescriptorProto> Parser { get { return _parser; } }
+
+    private static readonly string[] _fieldNames = new string[] { "method", "name", "options" };
+    private static readonly uint[] _fieldTags = new uint[] { 18, 10, 26 };
+    public static pbr::MessageDescriptor Descriptor {
+      get { return global::Google.Protobuf.Reflection.DescriptorProtoFile.Descriptor.MessageTypes[7]; }
+    }
+
+    pbr::FieldAccessorTable pb::IReflectedMessage.Fields {
+      get { return global::Google.Protobuf.Reflection.DescriptorProtoFile.internal__static_google_protobuf_ServiceDescriptorProto__FieldAccessorTable; }
+    }
+
+    private bool _frozen = false;
+    public bool IsFrozen { get { return _frozen; } }
+
+    public ServiceDescriptorProto() {
+      OnConstruction();
+    }
+
+    partial void OnConstruction();
+
+    public ServiceDescriptorProto(ServiceDescriptorProto other) : this() {
+      name_ = other.name_;
+      method_ = other.method_.Clone();
+      Options = other.options_ != null ? other.Options.Clone() : null;
+    }
+
+    public ServiceDescriptorProto Clone() {
+      return new ServiceDescriptorProto(this);
+    }
+
+    public void Freeze() {
+      if (IsFrozen) {
+        return;
+      }
+      _frozen = true;
+      method_.Freeze();
+      if (options_ != null) Options.Freeze();
+    }
+
+    public const int NameFieldNumber = 1;
+    private string name_ = "";
+    internal string Name {
+      get { return name_; }
+      set {
+        pb::Freezable.CheckMutable(this);
+        name_ = value ?? "";
+      }
+    }
+
+    public const int MethodFieldNumber = 2;
+    private static readonly pb::FieldCodec<global::Google.Protobuf.Reflection.MethodDescriptorProto> _repeated_method_codec
+        = pb::FieldCodec.ForMessage(18, global::Google.Protobuf.Reflection.MethodDescriptorProto.Parser);
+    private readonly pbc::RepeatedField<global::Google.Protobuf.Reflection.MethodDescriptorProto> method_ = new pbc::RepeatedField<global::Google.Protobuf.Reflection.MethodDescriptorProto>();
+    internal pbc::RepeatedField<global::Google.Protobuf.Reflection.MethodDescriptorProto> Method {
+      get { return method_; }
+    }
+
+    public const int OptionsFieldNumber = 3;
+    private global::Google.Protobuf.Reflection.ServiceOptions options_;
+    internal global::Google.Protobuf.Reflection.ServiceOptions Options {
+      get { return options_; }
+      set {
+        pb::Freezable.CheckMutable(this);
+        options_ = value;
+      }
+    }
+
+    public override bool Equals(object other) {
+      return Equals(other as ServiceDescriptorProto);
+    }
+
+    public bool Equals(ServiceDescriptorProto other) {
+      if (ReferenceEquals(other, null)) {
+        return false;
+      }
+      if (ReferenceEquals(other, this)) {
+        return true;
+      }
+      if (Name != other.Name) return false;
+      if(!method_.Equals(other.method_)) return false;
+      if (!object.Equals(Options, other.Options)) return false;
+      return true;
+    }
+
+    public override int GetHashCode() {
+      int hash = 1;
+      if (Name.Length != 0) hash ^= Name.GetHashCode();
+      hash ^= method_.GetHashCode();
+      if (options_ != null) hash ^= Options.GetHashCode();
+      return hash;
+    }
+
+    public override string ToString() {
+      return pb::JsonFormatter.Default.Format(this);
+    }
+
+    public void WriteTo(pb::CodedOutputStream output) {
+      if (Name.Length != 0) {
+        output.WriteRawTag(10);
+        output.WriteString(Name);
+      }
+      method_.WriteTo(output, _repeated_method_codec);
+      if (options_ != null) {
+        output.WriteRawTag(26);
+        output.WriteMessage(Options);
+      }
+    }
+
+    public int CalculateSize() {
+      int size = 0;
+      if (Name.Length != 0) {
+        size += 1 + pb::CodedOutputStream.ComputeStringSize(Name);
+      }
+      size += method_.CalculateSize(_repeated_method_codec);
+      if (options_ != null) {
+        size += 1 + pb::CodedOutputStream.ComputeMessageSize(Options);
+      }
+      return size;
+    }
+
+    public void MergeFrom(ServiceDescriptorProto other) {
+      if (other == null) {
+        return;
+      }
+      if (other.Name.Length != 0) {
+        Name = other.Name;
+      }
+      method_.Add(other.method_);
+      if (other.options_ != null) {
+        if (options_ == null) {
+          options_ = new global::Google.Protobuf.Reflection.ServiceOptions();
+        }
+        Options.MergeFrom(other.Options);
+      }
+    }
+
+    public void MergeFrom(pb::CodedInputStream input) {
+      uint tag;
+      while (input.ReadTag(out tag)) {
+        switch(tag) {
+          case 0:
+            throw pb::InvalidProtocolBufferException.InvalidTag();
+          default:
+            if (pb::WireFormat.IsEndGroupTag(tag)) {
+              return;
+            }
+            break;
+          case 10: {
+            Name = input.ReadString();
+            break;
+          }
+          case 18: {
+            method_.AddEntriesFrom(input, _repeated_method_codec);
+            break;
+          }
+          case 26: {
+            if (options_ == null) {
+              options_ = new global::Google.Protobuf.Reflection.ServiceOptions();
+            }
+            input.ReadMessage(options_);
+            break;
+          }
+        }
+      }
+    }
+
+  }
+
+  [global::System.Diagnostics.DebuggerNonUserCodeAttribute()]
+  internal sealed partial class MethodDescriptorProto : pb::IMessage<MethodDescriptorProto> {
+    private static readonly pb::MessageParser<MethodDescriptorProto> _parser = new pb::MessageParser<MethodDescriptorProto>(() => new MethodDescriptorProto());
+    public static pb::MessageParser<MethodDescriptorProto> Parser { get { return _parser; } }
+
+    private static readonly string[] _fieldNames = new string[] { "client_streaming", "input_type", "name", "options", "output_type", "server_streaming" };
+    private static readonly uint[] _fieldTags = new uint[] { 40, 18, 10, 34, 26, 48 };
+    public static pbr::MessageDescriptor Descriptor {
+      get { return global::Google.Protobuf.Reflection.DescriptorProtoFile.Descriptor.MessageTypes[8]; }
+    }
+
+    pbr::FieldAccessorTable pb::IReflectedMessage.Fields {
+      get { return global::Google.Protobuf.Reflection.DescriptorProtoFile.internal__static_google_protobuf_MethodDescriptorProto__FieldAccessorTable; }
+    }
+
+    private bool _frozen = false;
+    public bool IsFrozen { get { return _frozen; } }
+
+    public MethodDescriptorProto() {
+      OnConstruction();
+    }
+
+    partial void OnConstruction();
+
+    public MethodDescriptorProto(MethodDescriptorProto other) : this() {
+      name_ = other.name_;
+      inputType_ = other.inputType_;
+      outputType_ = other.outputType_;
+      Options = other.options_ != null ? other.Options.Clone() : null;
+      clientStreaming_ = other.clientStreaming_;
+      serverStreaming_ = other.serverStreaming_;
+    }
+
+    public MethodDescriptorProto Clone() {
+      return new MethodDescriptorProto(this);
+    }
+
+    public void Freeze() {
+      if (IsFrozen) {
+        return;
+      }
+      _frozen = true;
+      if (options_ != null) Options.Freeze();
+    }
+
+    public const int NameFieldNumber = 1;
+    private string name_ = "";
+    internal string Name {
+      get { return name_; }
+      set {
+        pb::Freezable.CheckMutable(this);
+        name_ = value ?? "";
+      }
+    }
+
+    public const int InputTypeFieldNumber = 2;
+    private string inputType_ = "";
+    internal string InputType {
+      get { return inputType_; }
+      set {
+        pb::Freezable.CheckMutable(this);
+        inputType_ = value ?? "";
+      }
+    }
+
+    public const int OutputTypeFieldNumber = 3;
+    private string outputType_ = "";
+    internal string OutputType {
+      get { return outputType_; }
+      set {
+        pb::Freezable.CheckMutable(this);
+        outputType_ = value ?? "";
+      }
+    }
+
+    public const int OptionsFieldNumber = 4;
+    private global::Google.Protobuf.Reflection.MethodOptions options_;
+    internal global::Google.Protobuf.Reflection.MethodOptions Options {
+      get { return options_; }
+      set {
+        pb::Freezable.CheckMutable(this);
+        options_ = value;
+      }
+    }
+
+    public const int ClientStreamingFieldNumber = 5;
+    private bool clientStreaming_;
+    internal bool ClientStreaming {
+      get { return clientStreaming_; }
+      set {
+        pb::Freezable.CheckMutable(this);
+        clientStreaming_ = value;
+      }
+    }
+
+    public const int ServerStreamingFieldNumber = 6;
+    private bool serverStreaming_;
+    internal bool ServerStreaming {
+      get { return serverStreaming_; }
+      set {
+        pb::Freezable.CheckMutable(this);
+        serverStreaming_ = value;
+      }
+    }
+
+    public override bool Equals(object other) {
+      return Equals(other as MethodDescriptorProto);
+    }
+
+    public bool Equals(MethodDescriptorProto other) {
+      if (ReferenceEquals(other, null)) {
+        return false;
+      }
+      if (ReferenceEquals(other, this)) {
+        return true;
+      }
+      if (Name != other.Name) return false;
+      if (InputType != other.InputType) return false;
+      if (OutputType != other.OutputType) return false;
+      if (!object.Equals(Options, other.Options)) return false;
+      if (ClientStreaming != other.ClientStreaming) return false;
+      if (ServerStreaming != other.ServerStreaming) return false;
+      return true;
+    }
+
+    public override int GetHashCode() {
+      int hash = 1;
+      if (Name.Length != 0) hash ^= Name.GetHashCode();
+      if (InputType.Length != 0) hash ^= InputType.GetHashCode();
+      if (OutputType.Length != 0) hash ^= OutputType.GetHashCode();
+      if (options_ != null) hash ^= Options.GetHashCode();
+      if (ClientStreaming != false) hash ^= ClientStreaming.GetHashCode();
+      if (ServerStreaming != false) hash ^= ServerStreaming.GetHashCode();
+      return hash;
+    }
+
+    public override string ToString() {
+      return pb::JsonFormatter.Default.Format(this);
+    }
+
+    public void WriteTo(pb::CodedOutputStream output) {
+      if (Name.Length != 0) {
+        output.WriteRawTag(10);
+        output.WriteString(Name);
+      }
+      if (InputType.Length != 0) {
+        output.WriteRawTag(18);
+        output.WriteString(InputType);
+      }
+      if (OutputType.Length != 0) {
+        output.WriteRawTag(26);
+        output.WriteString(OutputType);
+      }
+      if (options_ != null) {
+        output.WriteRawTag(34);
+        output.WriteMessage(Options);
+      }
+      if (ClientStreaming != false) {
+        output.WriteRawTag(40);
+        output.WriteBool(ClientStreaming);
+      }
+      if (ServerStreaming != false) {
+        output.WriteRawTag(48);
+        output.WriteBool(ServerStreaming);
+      }
+    }
+
+    public int CalculateSize() {
+      int size = 0;
+      if (Name.Length != 0) {
+        size += 1 + pb::CodedOutputStream.ComputeStringSize(Name);
+      }
+      if (InputType.Length != 0) {
+        size += 1 + pb::CodedOutputStream.ComputeStringSize(InputType);
+      }
+      if (OutputType.Length != 0) {
+        size += 1 + pb::CodedOutputStream.ComputeStringSize(OutputType);
+      }
+      if (options_ != null) {
+        size += 1 + pb::CodedOutputStream.ComputeMessageSize(Options);
+      }
+      if (ClientStreaming != false) {
+        size += 1 + 1;
+      }
+      if (ServerStreaming != false) {
+        size += 1 + 1;
+      }
+      return size;
+    }
+
+    public void MergeFrom(MethodDescriptorProto other) {
+      if (other == null) {
+        return;
+      }
+      if (other.Name.Length != 0) {
+        Name = other.Name;
+      }
+      if (other.InputType.Length != 0) {
+        InputType = other.InputType;
+      }
+      if (other.OutputType.Length != 0) {
+        OutputType = other.OutputType;
+      }
+      if (other.options_ != null) {
+        if (options_ == null) {
+          options_ = new global::Google.Protobuf.Reflection.MethodOptions();
+        }
+        Options.MergeFrom(other.Options);
+      }
+      if (other.ClientStreaming != false) {
+        ClientStreaming = other.ClientStreaming;
+      }
+      if (other.ServerStreaming != false) {
+        ServerStreaming = other.ServerStreaming;
+      }
+    }
+
+    public void MergeFrom(pb::CodedInputStream input) {
+      uint tag;
+      while (input.ReadTag(out tag)) {
+        switch(tag) {
+          case 0:
+            throw pb::InvalidProtocolBufferException.InvalidTag();
+          default:
+            if (pb::WireFormat.IsEndGroupTag(tag)) {
+              return;
+            }
+            break;
+          case 10: {
+            Name = input.ReadString();
+            break;
+          }
+          case 18: {
+            InputType = input.ReadString();
+            break;
+          }
+          case 26: {
+            OutputType = input.ReadString();
+            break;
+          }
+          case 34: {
+            if (options_ == null) {
+              options_ = new global::Google.Protobuf.Reflection.MethodOptions();
+            }
+            input.ReadMessage(options_);
+            break;
+          }
+          case 40: {
+            ClientStreaming = input.ReadBool();
+            break;
+          }
+          case 48: {
+            ServerStreaming = input.ReadBool();
+            break;
+          }
+        }
+      }
+    }
+
+  }
+
+  [global::System.Diagnostics.DebuggerNonUserCodeAttribute()]
+  internal sealed partial class FileOptions : pb::IMessage<FileOptions> {
+    private static readonly pb::MessageParser<FileOptions> _parser = new pb::MessageParser<FileOptions>(() => new FileOptions());
+    public static pb::MessageParser<FileOptions> Parser { get { return _parser; } }
+
+    private static readonly string[] _fieldNames = new string[] { "cc_enable_arenas", "cc_generic_services", "csharp_namespace", "deprecated", "go_package", "java_generate_equals_and_hash", "java_generic_services", "java_multiple_files", "java_outer_classname", "java_package", "java_string_check_utf8", "objc_class_prefix", "optimize_for", "py_generic_services", "uninterpreted_option" };
+    private static readonly uint[] _fieldTags = new uint[] { 248, 128, 298, 184, 90, 160, 136, 80, 66, 10, 216, 290, 72, 144, 7994 };
+    public static pbr::MessageDescriptor Descriptor {
+      get { return global::Google.Protobuf.Reflection.DescriptorProtoFile.Descriptor.MessageTypes[9]; }
+    }
+
+    pbr::FieldAccessorTable pb::IReflectedMessage.Fields {
+      get { return global::Google.Protobuf.Reflection.DescriptorProtoFile.internal__static_google_protobuf_FileOptions__FieldAccessorTable; }
+    }
+
+    private bool _frozen = false;
+    public bool IsFrozen { get { return _frozen; } }
+
+    public FileOptions() {
+      OnConstruction();
+    }
+
+    partial void OnConstruction();
+
+    public FileOptions(FileOptions other) : this() {
+      javaPackage_ = other.javaPackage_;
+      javaOuterClassname_ = other.javaOuterClassname_;
+      javaMultipleFiles_ = other.javaMultipleFiles_;
+      javaGenerateEqualsAndHash_ = other.javaGenerateEqualsAndHash_;
+      javaStringCheckUtf8_ = other.javaStringCheckUtf8_;
+      optimizeFor_ = other.optimizeFor_;
+      goPackage_ = other.goPackage_;
+      ccGenericServices_ = other.ccGenericServices_;
+      javaGenericServices_ = other.javaGenericServices_;
+      pyGenericServices_ = other.pyGenericServices_;
+      deprecated_ = other.deprecated_;
+      ccEnableArenas_ = other.ccEnableArenas_;
+      objcClassPrefix_ = other.objcClassPrefix_;
+      csharpNamespace_ = other.csharpNamespace_;
+      uninterpretedOption_ = other.uninterpretedOption_.Clone();
+    }
+
+    public FileOptions Clone() {
+      return new FileOptions(this);
+    }
+
+    public void Freeze() {
+      if (IsFrozen) {
+        return;
+      }
+      _frozen = true;
+      uninterpretedOption_.Freeze();
+    }
+
+    public const int JavaPackageFieldNumber = 1;
+    private string javaPackage_ = "";
+    internal string JavaPackage {
+      get { return javaPackage_; }
+      set {
+        pb::Freezable.CheckMutable(this);
+        javaPackage_ = value ?? "";
+      }
+    }
+
+    public const int JavaOuterClassnameFieldNumber = 8;
+    private string javaOuterClassname_ = "";
+    internal string JavaOuterClassname {
+      get { return javaOuterClassname_; }
+      set {
+        pb::Freezable.CheckMutable(this);
+        javaOuterClassname_ = value ?? "";
+      }
+    }
+
+    public const int JavaMultipleFilesFieldNumber = 10;
+    private bool javaMultipleFiles_;
+    internal bool JavaMultipleFiles {
+      get { return javaMultipleFiles_; }
+      set {
+        pb::Freezable.CheckMutable(this);
+        javaMultipleFiles_ = value;
+      }
+    }
+
+    public const int JavaGenerateEqualsAndHashFieldNumber = 20;
+    private bool javaGenerateEqualsAndHash_;
+    internal bool JavaGenerateEqualsAndHash {
+      get { return javaGenerateEqualsAndHash_; }
+      set {
+        pb::Freezable.CheckMutable(this);
+        javaGenerateEqualsAndHash_ = value;
+      }
+    }
+
+    public const int JavaStringCheckUtf8FieldNumber = 27;
+    private bool javaStringCheckUtf8_;
+    internal bool JavaStringCheckUtf8 {
+      get { return javaStringCheckUtf8_; }
+      set {
+        pb::Freezable.CheckMutable(this);
+        javaStringCheckUtf8_ = value;
+      }
+    }
+
+    public const int OptimizeForFieldNumber = 9;
+    private global::Google.Protobuf.Reflection.FileOptions.Types.OptimizeMode optimizeFor_ = global::Google.Protobuf.Reflection.FileOptions.Types.OptimizeMode.SPEED;
+    internal global::Google.Protobuf.Reflection.FileOptions.Types.OptimizeMode OptimizeFor {
+      get { return optimizeFor_; }
+      set {
+        pb::Freezable.CheckMutable(this);
+        optimizeFor_ = value;
+      }
+    }
+
+    public const int GoPackageFieldNumber = 11;
+    private string goPackage_ = "";
+    internal string GoPackage {
+      get { return goPackage_; }
+      set {
+        pb::Freezable.CheckMutable(this);
+        goPackage_ = value ?? "";
+      }
+    }
+
+    public const int CcGenericServicesFieldNumber = 16;
+    private bool ccGenericServices_;
+    internal bool CcGenericServices {
+      get { return ccGenericServices_; }
+      set {
+        pb::Freezable.CheckMutable(this);
+        ccGenericServices_ = value;
+      }
+    }
+
+    public const int JavaGenericServicesFieldNumber = 17;
+    private bool javaGenericServices_;
+    internal bool JavaGenericServices {
+      get { return javaGenericServices_; }
+      set {
+        pb::Freezable.CheckMutable(this);
+        javaGenericServices_ = value;
+      }
+    }
+
+    public const int PyGenericServicesFieldNumber = 18;
+    private bool pyGenericServices_;
+    internal bool PyGenericServices {
+      get { return pyGenericServices_; }
+      set {
+        pb::Freezable.CheckMutable(this);
+        pyGenericServices_ = value;
+      }
+    }
+
+    public const int DeprecatedFieldNumber = 23;
+    private bool deprecated_;
+    internal bool Deprecated {
+      get { return deprecated_; }
+      set {
+        pb::Freezable.CheckMutable(this);
+        deprecated_ = value;
+      }
+    }
+
+    public const int CcEnableArenasFieldNumber = 31;
+    private bool ccEnableArenas_;
+    internal bool CcEnableArenas {
+      get { return ccEnableArenas_; }
+      set {
+        pb::Freezable.CheckMutable(this);
+        ccEnableArenas_ = value;
+      }
+    }
+
+    public const int ObjcClassPrefixFieldNumber = 36;
+    private string objcClassPrefix_ = "";
+    internal string ObjcClassPrefix {
+      get { return objcClassPrefix_; }
+      set {
+        pb::Freezable.CheckMutable(this);
+        objcClassPrefix_ = value ?? "";
+      }
+    }
+
+    public const int CsharpNamespaceFieldNumber = 37;
+    private string csharpNamespace_ = "";
+    internal string CsharpNamespace {
+      get { return csharpNamespace_; }
+      set {
+        pb::Freezable.CheckMutable(this);
+        csharpNamespace_ = value ?? "";
+      }
+    }
+
+    public const int UninterpretedOptionFieldNumber = 999;
+    private static readonly pb::FieldCodec<global::Google.Protobuf.Reflection.UninterpretedOption> _repeated_uninterpretedOption_codec
+        = pb::FieldCodec.ForMessage(7994, global::Google.Protobuf.Reflection.UninterpretedOption.Parser);
+    private readonly pbc::RepeatedField<global::Google.Protobuf.Reflection.UninterpretedOption> uninterpretedOption_ = new pbc::RepeatedField<global::Google.Protobuf.Reflection.UninterpretedOption>();
+    internal pbc::RepeatedField<global::Google.Protobuf.Reflection.UninterpretedOption> UninterpretedOption {
+      get { return uninterpretedOption_; }
+    }
+
+    public override bool Equals(object other) {
+      return Equals(other as FileOptions);
+    }
+
+    public bool Equals(FileOptions other) {
+      if (ReferenceEquals(other, null)) {
+        return false;
+      }
+      if (ReferenceEquals(other, this)) {
+        return true;
+      }
+      if (JavaPackage != other.JavaPackage) return false;
+      if (JavaOuterClassname != other.JavaOuterClassname) return false;
+      if (JavaMultipleFiles != other.JavaMultipleFiles) return false;
+      if (JavaGenerateEqualsAndHash != other.JavaGenerateEqualsAndHash) return false;
+      if (JavaStringCheckUtf8 != other.JavaStringCheckUtf8) return false;
+      if (OptimizeFor != other.OptimizeFor) return false;
+      if (GoPackage != other.GoPackage) return false;
+      if (CcGenericServices != other.CcGenericServices) return false;
+      if (JavaGenericServices != other.JavaGenericServices) return false;
+      if (PyGenericServices != other.PyGenericServices) return false;
+      if (Deprecated != other.Deprecated) return false;
+      if (CcEnableArenas != other.CcEnableArenas) return false;
+      if (ObjcClassPrefix != other.ObjcClassPrefix) return false;
+      if (CsharpNamespace != other.CsharpNamespace) return false;
+      if(!uninterpretedOption_.Equals(other.uninterpretedOption_)) return false;
+      return true;
+    }
+
+    public override int GetHashCode() {
+      int hash = 1;
+      if (JavaPackage.Length != 0) hash ^= JavaPackage.GetHashCode();
+      if (JavaOuterClassname.Length != 0) hash ^= JavaOuterClassname.GetHashCode();
+      if (JavaMultipleFiles != false) hash ^= JavaMultipleFiles.GetHashCode();
+      if (JavaGenerateEqualsAndHash != false) hash ^= JavaGenerateEqualsAndHash.GetHashCode();
+      if (JavaStringCheckUtf8 != false) hash ^= JavaStringCheckUtf8.GetHashCode();
+      if (OptimizeFor != global::Google.Protobuf.Reflection.FileOptions.Types.OptimizeMode.SPEED) hash ^= OptimizeFor.GetHashCode();
+      if (GoPackage.Length != 0) hash ^= GoPackage.GetHashCode();
+      if (CcGenericServices != false) hash ^= CcGenericServices.GetHashCode();
+      if (JavaGenericServices != false) hash ^= JavaGenericServices.GetHashCode();
+      if (PyGenericServices != false) hash ^= PyGenericServices.GetHashCode();
+      if (Deprecated != false) hash ^= Deprecated.GetHashCode();
+      if (CcEnableArenas != false) hash ^= CcEnableArenas.GetHashCode();
+      if (ObjcClassPrefix.Length != 0) hash ^= ObjcClassPrefix.GetHashCode();
+      if (CsharpNamespace.Length != 0) hash ^= CsharpNamespace.GetHashCode();
+      hash ^= uninterpretedOption_.GetHashCode();
+      return hash;
+    }
+
+    public override string ToString() {
+      return pb::JsonFormatter.Default.Format(this);
+    }
+
+    public void WriteTo(pb::CodedOutputStream output) {
+      if (JavaPackage.Length != 0) {
+        output.WriteRawTag(10);
+        output.WriteString(JavaPackage);
+      }
+      if (JavaOuterClassname.Length != 0) {
+        output.WriteRawTag(66);
+        output.WriteString(JavaOuterClassname);
+      }
+      if (OptimizeFor != global::Google.Protobuf.Reflection.FileOptions.Types.OptimizeMode.SPEED) {
+        output.WriteRawTag(72);
+        output.WriteEnum((int) OptimizeFor);
+      }
+      if (JavaMultipleFiles != false) {
+        output.WriteRawTag(80);
+        output.WriteBool(JavaMultipleFiles);
+      }
+      if (GoPackage.Length != 0) {
+        output.WriteRawTag(90);
+        output.WriteString(GoPackage);
+      }
+      if (CcGenericServices != false) {
+        output.WriteRawTag(128, 1);
+        output.WriteBool(CcGenericServices);
+      }
+      if (JavaGenericServices != false) {
+        output.WriteRawTag(136, 1);
+        output.WriteBool(JavaGenericServices);
+      }
+      if (PyGenericServices != false) {
+        output.WriteRawTag(144, 1);
+        output.WriteBool(PyGenericServices);
+      }
+      if (JavaGenerateEqualsAndHash != false) {
+        output.WriteRawTag(160, 1);
+        output.WriteBool(JavaGenerateEqualsAndHash);
+      }
+      if (Deprecated != false) {
+        output.WriteRawTag(184, 1);
+        output.WriteBool(Deprecated);
+      }
+      if (JavaStringCheckUtf8 != false) {
+        output.WriteRawTag(216, 1);
+        output.WriteBool(JavaStringCheckUtf8);
+      }
+      if (CcEnableArenas != false) {
+        output.WriteRawTag(248, 1);
+        output.WriteBool(CcEnableArenas);
+      }
+      if (ObjcClassPrefix.Length != 0) {
+        output.WriteRawTag(162, 2);
+        output.WriteString(ObjcClassPrefix);
+      }
+      if (CsharpNamespace.Length != 0) {
+        output.WriteRawTag(170, 2);
+        output.WriteString(CsharpNamespace);
+      }
+      uninterpretedOption_.WriteTo(output, _repeated_uninterpretedOption_codec);
+    }
+
+    public int CalculateSize() {
+      int size = 0;
+      if (JavaPackage.Length != 0) {
+        size += 1 + pb::CodedOutputStream.ComputeStringSize(JavaPackage);
+      }
+      if (JavaOuterClassname.Length != 0) {
+        size += 1 + pb::CodedOutputStream.ComputeStringSize(JavaOuterClassname);
+      }
+      if (JavaMultipleFiles != false) {
+        size += 1 + 1;
+      }
+      if (JavaGenerateEqualsAndHash != false) {
+        size += 2 + 1;
+      }
+      if (JavaStringCheckUtf8 != false) {
+        size += 2 + 1;
+      }
+      if (OptimizeFor != global::Google.Protobuf.Reflection.FileOptions.Types.OptimizeMode.SPEED) {
+        size += 1 + pb::CodedOutputStream.ComputeEnumSize((int) OptimizeFor);
+      }
+      if (GoPackage.Length != 0) {
+        size += 1 + pb::CodedOutputStream.ComputeStringSize(GoPackage);
+      }
+      if (CcGenericServices != false) {
+        size += 2 + 1;
+      }
+      if (JavaGenericServices != false) {
+        size += 2 + 1;
+      }
+      if (PyGenericServices != false) {
+        size += 2 + 1;
+      }
+      if (Deprecated != false) {
+        size += 2 + 1;
+      }
+      if (CcEnableArenas != false) {
+        size += 2 + 1;
+      }
+      if (ObjcClassPrefix.Length != 0) {
+        size += 2 + pb::CodedOutputStream.ComputeStringSize(ObjcClassPrefix);
+      }
+      if (CsharpNamespace.Length != 0) {
+        size += 2 + pb::CodedOutputStream.ComputeStringSize(CsharpNamespace);
+      }
+      size += uninterpretedOption_.CalculateSize(_repeated_uninterpretedOption_codec);
+      return size;
+    }
+
+    public void MergeFrom(FileOptions other) {
+      if (other == null) {
+        return;
+      }
+      if (other.JavaPackage.Length != 0) {
+        JavaPackage = other.JavaPackage;
+      }
+      if (other.JavaOuterClassname.Length != 0) {
+        JavaOuterClassname = other.JavaOuterClassname;
+      }
+      if (other.JavaMultipleFiles != false) {
+        JavaMultipleFiles = other.JavaMultipleFiles;
+      }
+      if (other.JavaGenerateEqualsAndHash != false) {
+        JavaGenerateEqualsAndHash = other.JavaGenerateEqualsAndHash;
+      }
+      if (other.JavaStringCheckUtf8 != false) {
+        JavaStringCheckUtf8 = other.JavaStringCheckUtf8;
+      }
+      if (other.OptimizeFor != global::Google.Protobuf.Reflection.FileOptions.Types.OptimizeMode.SPEED) {
+        OptimizeFor = other.OptimizeFor;
+      }
+      if (other.GoPackage.Length != 0) {
+        GoPackage = other.GoPackage;
+      }
+      if (other.CcGenericServices != false) {
+        CcGenericServices = other.CcGenericServices;
+      }
+      if (other.JavaGenericServices != false) {
+        JavaGenericServices = other.JavaGenericServices;
+      }
+      if (other.PyGenericServices != false) {
+        PyGenericServices = other.PyGenericServices;
+      }
+      if (other.Deprecated != false) {
+        Deprecated = other.Deprecated;
+      }
+      if (other.CcEnableArenas != false) {
+        CcEnableArenas = other.CcEnableArenas;
+      }
+      if (other.ObjcClassPrefix.Length != 0) {
+        ObjcClassPrefix = other.ObjcClassPrefix;
+      }
+      if (other.CsharpNamespace.Length != 0) {
+        CsharpNamespace = other.CsharpNamespace;
+      }
+      uninterpretedOption_.Add(other.uninterpretedOption_);
+    }
+
+    public void MergeFrom(pb::CodedInputStream input) {
+      uint tag;
+      while (input.ReadTag(out tag)) {
+        switch(tag) {
+          case 0:
+            throw pb::InvalidProtocolBufferException.InvalidTag();
+          default:
+            if (pb::WireFormat.IsEndGroupTag(tag)) {
+              return;
+            }
+            break;
+          case 10: {
+            JavaPackage = input.ReadString();
+            break;
+          }
+          case 66: {
+            JavaOuterClassname = input.ReadString();
+            break;
+          }
+          case 72: {
+            optimizeFor_ = (global::Google.Protobuf.Reflection.FileOptions.Types.OptimizeMode) input.ReadEnum();
+            break;
+          }
+          case 80: {
+            JavaMultipleFiles = input.ReadBool();
+            break;
+          }
+          case 90: {
+            GoPackage = input.ReadString();
+            break;
+          }
+          case 128: {
+            CcGenericServices = input.ReadBool();
+            break;
+          }
+          case 136: {
+            JavaGenericServices = input.ReadBool();
+            break;
+          }
+          case 144: {
+            PyGenericServices = input.ReadBool();
+            break;
+          }
+          case 160: {
+            JavaGenerateEqualsAndHash = input.ReadBool();
+            break;
+          }
+          case 184: {
+            Deprecated = input.ReadBool();
+            break;
+          }
+          case 216: {
+            JavaStringCheckUtf8 = input.ReadBool();
+            break;
+          }
+          case 248: {
+            CcEnableArenas = input.ReadBool();
+            break;
+          }
+          case 290: {
+            ObjcClassPrefix = input.ReadString();
+            break;
+          }
+          case 298: {
+            CsharpNamespace = input.ReadString();
+            break;
+          }
+          case 7994: {
+            uninterpretedOption_.AddEntriesFrom(input, _repeated_uninterpretedOption_codec);
+            break;
+          }
+        }
+      }
+    }
+
+    #region Nested types
+    [global::System.Diagnostics.DebuggerNonUserCodeAttribute()]
+    public static partial class Types {
+      internal enum OptimizeMode {
+        SPEED = 1,
+        CODE_SIZE = 2,
+        LITE_RUNTIME = 3,
+      }
+
+    }
+    #endregion
+
+  }
+
+  [global::System.Diagnostics.DebuggerNonUserCodeAttribute()]
+  internal sealed partial class MessageOptions : pb::IMessage<MessageOptions> {
+    private static readonly pb::MessageParser<MessageOptions> _parser = new pb::MessageParser<MessageOptions>(() => new MessageOptions());
+    public static pb::MessageParser<MessageOptions> Parser { get { return _parser; } }
+
+    private static readonly string[] _fieldNames = new string[] { "deprecated", "map_entry", "message_set_wire_format", "no_standard_descriptor_accessor", "uninterpreted_option" };
+    private static readonly uint[] _fieldTags = new uint[] { 24, 56, 8, 16, 7994 };
+    public static pbr::MessageDescriptor Descriptor {
+      get { return global::Google.Protobuf.Reflection.DescriptorProtoFile.Descriptor.MessageTypes[10]; }
+    }
+
+    pbr::FieldAccessorTable pb::IReflectedMessage.Fields {
+      get { return global::Google.Protobuf.Reflection.DescriptorProtoFile.internal__static_google_protobuf_MessageOptions__FieldAccessorTable; }
+    }
+
+    private bool _frozen = false;
+    public bool IsFrozen { get { return _frozen; } }
+
+    public MessageOptions() {
+      OnConstruction();
+    }
+
+    partial void OnConstruction();
+
+    public MessageOptions(MessageOptions other) : this() {
+      messageSetWireFormat_ = other.messageSetWireFormat_;
+      noStandardDescriptorAccessor_ = other.noStandardDescriptorAccessor_;
+      deprecated_ = other.deprecated_;
+      mapEntry_ = other.mapEntry_;
+      uninterpretedOption_ = other.uninterpretedOption_.Clone();
+    }
+
+    public MessageOptions Clone() {
+      return new MessageOptions(this);
+    }
+
+    public void Freeze() {
+      if (IsFrozen) {
+        return;
+      }
+      _frozen = true;
+      uninterpretedOption_.Freeze();
+    }
+
+    public const int MessageSetWireFormatFieldNumber = 1;
+    private bool messageSetWireFormat_;
+    internal bool MessageSetWireFormat {
+      get { return messageSetWireFormat_; }
+      set {
+        pb::Freezable.CheckMutable(this);
+        messageSetWireFormat_ = value;
+      }
+    }
+
+    public const int NoStandardDescriptorAccessorFieldNumber = 2;
+    private bool noStandardDescriptorAccessor_;
+    internal bool NoStandardDescriptorAccessor {
+      get { return noStandardDescriptorAccessor_; }
+      set {
+        pb::Freezable.CheckMutable(this);
+        noStandardDescriptorAccessor_ = value;
+      }
+    }
+
+    public const int DeprecatedFieldNumber = 3;
+    private bool deprecated_;
+    internal bool Deprecated {
+      get { return deprecated_; }
+      set {
+        pb::Freezable.CheckMutable(this);
+        deprecated_ = value;
+      }
+    }
+
+    public const int MapEntryFieldNumber = 7;
+    private bool mapEntry_;
+    internal bool MapEntry {
+      get { return mapEntry_; }
+      set {
+        pb::Freezable.CheckMutable(this);
+        mapEntry_ = value;
+      }
+    }
+
+    public const int UninterpretedOptionFieldNumber = 999;
+    private static readonly pb::FieldCodec<global::Google.Protobuf.Reflection.UninterpretedOption> _repeated_uninterpretedOption_codec
+        = pb::FieldCodec.ForMessage(7994, global::Google.Protobuf.Reflection.UninterpretedOption.Parser);
+    private readonly pbc::RepeatedField<global::Google.Protobuf.Reflection.UninterpretedOption> uninterpretedOption_ = new pbc::RepeatedField<global::Google.Protobuf.Reflection.UninterpretedOption>();
+    internal pbc::RepeatedField<global::Google.Protobuf.Reflection.UninterpretedOption> UninterpretedOption {
+      get { return uninterpretedOption_; }
+    }
+
+    public override bool Equals(object other) {
+      return Equals(other as MessageOptions);
+    }
+
+    public bool Equals(MessageOptions other) {
+      if (ReferenceEquals(other, null)) {
+        return false;
+      }
+      if (ReferenceEquals(other, this)) {
+        return true;
+      }
+      if (MessageSetWireFormat != other.MessageSetWireFormat) return false;
+      if (NoStandardDescriptorAccessor != other.NoStandardDescriptorAccessor) return false;
+      if (Deprecated != other.Deprecated) return false;
+      if (MapEntry != other.MapEntry) return false;
+      if(!uninterpretedOption_.Equals(other.uninterpretedOption_)) return false;
+      return true;
+    }
+
+    public override int GetHashCode() {
+      int hash = 1;
+      if (MessageSetWireFormat != false) hash ^= MessageSetWireFormat.GetHashCode();
+      if (NoStandardDescriptorAccessor != false) hash ^= NoStandardDescriptorAccessor.GetHashCode();
+      if (Deprecated != false) hash ^= Deprecated.GetHashCode();
+      if (MapEntry != false) hash ^= MapEntry.GetHashCode();
+      hash ^= uninterpretedOption_.GetHashCode();
+      return hash;
+    }
+
+    public override string ToString() {
+      return pb::JsonFormatter.Default.Format(this);
+    }
+
+    public void WriteTo(pb::CodedOutputStream output) {
+      if (MessageSetWireFormat != false) {
+        output.WriteRawTag(8);
+        output.WriteBool(MessageSetWireFormat);
+      }
+      if (NoStandardDescriptorAccessor != false) {
+        output.WriteRawTag(16);
+        output.WriteBool(NoStandardDescriptorAccessor);
+      }
+      if (Deprecated != false) {
+        output.WriteRawTag(24);
+        output.WriteBool(Deprecated);
+      }
+      if (MapEntry != false) {
+        output.WriteRawTag(56);
+        output.WriteBool(MapEntry);
+      }
+      uninterpretedOption_.WriteTo(output, _repeated_uninterpretedOption_codec);
+    }
+
+    public int CalculateSize() {
+      int size = 0;
+      if (MessageSetWireFormat != false) {
+        size += 1 + 1;
+      }
+      if (NoStandardDescriptorAccessor != false) {
+        size += 1 + 1;
+      }
+      if (Deprecated != false) {
+        size += 1 + 1;
+      }
+      if (MapEntry != false) {
+        size += 1 + 1;
+      }
+      size += uninterpretedOption_.CalculateSize(_repeated_uninterpretedOption_codec);
+      return size;
+    }
+
+    public void MergeFrom(MessageOptions other) {
+      if (other == null) {
+        return;
+      }
+      if (other.MessageSetWireFormat != false) {
+        MessageSetWireFormat = other.MessageSetWireFormat;
+      }
+      if (other.NoStandardDescriptorAccessor != false) {
+        NoStandardDescriptorAccessor = other.NoStandardDescriptorAccessor;
+      }
+      if (other.Deprecated != false) {
+        Deprecated = other.Deprecated;
+      }
+      if (other.MapEntry != false) {
+        MapEntry = other.MapEntry;
+      }
+      uninterpretedOption_.Add(other.uninterpretedOption_);
+    }
+
+    public void MergeFrom(pb::CodedInputStream input) {
+      uint tag;
+      while (input.ReadTag(out tag)) {
+        switch(tag) {
+          case 0:
+            throw pb::InvalidProtocolBufferException.InvalidTag();
+          default:
+            if (pb::WireFormat.IsEndGroupTag(tag)) {
+              return;
+            }
+            break;
+          case 8: {
+            MessageSetWireFormat = input.ReadBool();
+            break;
+          }
+          case 16: {
+            NoStandardDescriptorAccessor = input.ReadBool();
+            break;
+          }
+          case 24: {
+            Deprecated = input.ReadBool();
+            break;
+          }
+          case 56: {
+            MapEntry = input.ReadBool();
+            break;
+          }
+          case 7994: {
+            uninterpretedOption_.AddEntriesFrom(input, _repeated_uninterpretedOption_codec);
+            break;
+          }
+        }
+      }
+    }
+
+  }
+
+  [global::System.Diagnostics.DebuggerNonUserCodeAttribute()]
+  internal sealed partial class FieldOptions : pb::IMessage<FieldOptions> {
+    private static readonly pb::MessageParser<FieldOptions> _parser = new pb::MessageParser<FieldOptions>(() => new FieldOptions());
+    public static pb::MessageParser<FieldOptions> Parser { get { return _parser; } }
+
+    private static readonly string[] _fieldNames = new string[] { "ctype", "deprecated", "jstype", "lazy", "packed", "uninterpreted_option", "weak" };
+    private static readonly uint[] _fieldTags = new uint[] { 8, 24, 48, 40, 16, 7994, 80 };
+    public static pbr::MessageDescriptor Descriptor {
+      get { return global::Google.Protobuf.Reflection.DescriptorProtoFile.Descriptor.MessageTypes[11]; }
+    }
+
+    pbr::FieldAccessorTable pb::IReflectedMessage.Fields {
+      get { return global::Google.Protobuf.Reflection.DescriptorProtoFile.internal__static_google_protobuf_FieldOptions__FieldAccessorTable; }
+    }
+
+    private bool _frozen = false;
+    public bool IsFrozen { get { return _frozen; } }
+
+    public FieldOptions() {
+      OnConstruction();
+    }
+
+    partial void OnConstruction();
+
+    public FieldOptions(FieldOptions other) : this() {
+      ctype_ = other.ctype_;
+      packed_ = other.packed_;
+      jstype_ = other.jstype_;
+      lazy_ = other.lazy_;
+      deprecated_ = other.deprecated_;
+      weak_ = other.weak_;
+      uninterpretedOption_ = other.uninterpretedOption_.Clone();
+    }
+
+    public FieldOptions Clone() {
+      return new FieldOptions(this);
+    }
+
+    public void Freeze() {
+      if (IsFrozen) {
+        return;
+      }
+      _frozen = true;
+      uninterpretedOption_.Freeze();
+    }
+
+    public const int CtypeFieldNumber = 1;
+    private global::Google.Protobuf.Reflection.FieldOptions.Types.CType ctype_ = global::Google.Protobuf.Reflection.FieldOptions.Types.CType.STRING;
+    internal global::Google.Protobuf.Reflection.FieldOptions.Types.CType Ctype {
+      get { return ctype_; }
+      set {
+        pb::Freezable.CheckMutable(this);
+        ctype_ = value;
+      }
+    }
+
+    public const int PackedFieldNumber = 2;
+    private bool packed_;
+    internal bool Packed {
+      get { return packed_; }
+      set {
+        pb::Freezable.CheckMutable(this);
+        packed_ = value;
+      }
+    }
+
+    public const int JstypeFieldNumber = 6;
+    private global::Google.Protobuf.Reflection.FieldOptions.Types.JSType jstype_ = global::Google.Protobuf.Reflection.FieldOptions.Types.JSType.JS_NORMAL;
+    internal global::Google.Protobuf.Reflection.FieldOptions.Types.JSType Jstype {
+      get { return jstype_; }
+      set {
+        pb::Freezable.CheckMutable(this);
+        jstype_ = value;
+      }
+    }
+
+    public const int LazyFieldNumber = 5;
+    private bool lazy_;
+    internal bool Lazy {
+      get { return lazy_; }
+      set {
+        pb::Freezable.CheckMutable(this);
+        lazy_ = value;
+      }
+    }
+
+    public const int DeprecatedFieldNumber = 3;
+    private bool deprecated_;
+    internal bool Deprecated {
+      get { return deprecated_; }
+      set {
+        pb::Freezable.CheckMutable(this);
+        deprecated_ = value;
+      }
+    }
+
+    public const int WeakFieldNumber = 10;
+    private bool weak_;
+    internal bool Weak {
+      get { return weak_; }
+      set {
+        pb::Freezable.CheckMutable(this);
+        weak_ = value;
+      }
+    }
+
+    public const int UninterpretedOptionFieldNumber = 999;
+    private static readonly pb::FieldCodec<global::Google.Protobuf.Reflection.UninterpretedOption> _repeated_uninterpretedOption_codec
+        = pb::FieldCodec.ForMessage(7994, global::Google.Protobuf.Reflection.UninterpretedOption.Parser);
+    private readonly pbc::RepeatedField<global::Google.Protobuf.Reflection.UninterpretedOption> uninterpretedOption_ = new pbc::RepeatedField<global::Google.Protobuf.Reflection.UninterpretedOption>();
+    internal pbc::RepeatedField<global::Google.Protobuf.Reflection.UninterpretedOption> UninterpretedOption {
+      get { return uninterpretedOption_; }
+    }
+
+    public override bool Equals(object other) {
+      return Equals(other as FieldOptions);
+    }
+
+    public bool Equals(FieldOptions other) {
+      if (ReferenceEquals(other, null)) {
+        return false;
+      }
+      if (ReferenceEquals(other, this)) {
+        return true;
+      }
+      if (Ctype != other.Ctype) return false;
+      if (Packed != other.Packed) return false;
+      if (Jstype != other.Jstype) return false;
+      if (Lazy != other.Lazy) return false;
+      if (Deprecated != other.Deprecated) return false;
+      if (Weak != other.Weak) return false;
+      if(!uninterpretedOption_.Equals(other.uninterpretedOption_)) return false;
+      return true;
+    }
+
+    public override int GetHashCode() {
+      int hash = 1;
+      if (Ctype != global::Google.Protobuf.Reflection.FieldOptions.Types.CType.STRING) hash ^= Ctype.GetHashCode();
+      if (Packed != false) hash ^= Packed.GetHashCode();
+      if (Jstype != global::Google.Protobuf.Reflection.FieldOptions.Types.JSType.JS_NORMAL) hash ^= Jstype.GetHashCode();
+      if (Lazy != false) hash ^= Lazy.GetHashCode();
+      if (Deprecated != false) hash ^= Deprecated.GetHashCode();
+      if (Weak != false) hash ^= Weak.GetHashCode();
+      hash ^= uninterpretedOption_.GetHashCode();
+      return hash;
+    }
+
+    public override string ToString() {
+      return pb::JsonFormatter.Default.Format(this);
+    }
+
+    public void WriteTo(pb::CodedOutputStream output) {
+      if (Ctype != global::Google.Protobuf.Reflection.FieldOptions.Types.CType.STRING) {
+        output.WriteRawTag(8);
+        output.WriteEnum((int) Ctype);
+      }
+      if (Packed != false) {
+        output.WriteRawTag(16);
+        output.WriteBool(Packed);
+      }
+      if (Deprecated != false) {
+        output.WriteRawTag(24);
+        output.WriteBool(Deprecated);
+      }
+      if (Lazy != false) {
+        output.WriteRawTag(40);
+        output.WriteBool(Lazy);
+      }
+      if (Jstype != global::Google.Protobuf.Reflection.FieldOptions.Types.JSType.JS_NORMAL) {
+        output.WriteRawTag(48);
+        output.WriteEnum((int) Jstype);
+      }
+      if (Weak != false) {
+        output.WriteRawTag(80);
+        output.WriteBool(Weak);
+      }
+      uninterpretedOption_.WriteTo(output, _repeated_uninterpretedOption_codec);
+    }
+
+    public int CalculateSize() {
+      int size = 0;
+      if (Ctype != global::Google.Protobuf.Reflection.FieldOptions.Types.CType.STRING) {
+        size += 1 + pb::CodedOutputStream.ComputeEnumSize((int) Ctype);
+      }
+      if (Packed != false) {
+        size += 1 + 1;
+      }
+      if (Jstype != global::Google.Protobuf.Reflection.FieldOptions.Types.JSType.JS_NORMAL) {
+        size += 1 + pb::CodedOutputStream.ComputeEnumSize((int) Jstype);
+      }
+      if (Lazy != false) {
+        size += 1 + 1;
+      }
+      if (Deprecated != false) {
+        size += 1 + 1;
+      }
+      if (Weak != false) {
+        size += 1 + 1;
+      }
+      size += uninterpretedOption_.CalculateSize(_repeated_uninterpretedOption_codec);
+      return size;
+    }
+
+    public void MergeFrom(FieldOptions other) {
+      if (other == null) {
+        return;
+      }
+      if (other.Ctype != global::Google.Protobuf.Reflection.FieldOptions.Types.CType.STRING) {
+        Ctype = other.Ctype;
+      }
+      if (other.Packed != false) {
+        Packed = other.Packed;
+      }
+      if (other.Jstype != global::Google.Protobuf.Reflection.FieldOptions.Types.JSType.JS_NORMAL) {
+        Jstype = other.Jstype;
+      }
+      if (other.Lazy != false) {
+        Lazy = other.Lazy;
+      }
+      if (other.Deprecated != false) {
+        Deprecated = other.Deprecated;
+      }
+      if (other.Weak != false) {
+        Weak = other.Weak;
+      }
+      uninterpretedOption_.Add(other.uninterpretedOption_);
+    }
+
+    public void MergeFrom(pb::CodedInputStream input) {
+      uint tag;
+      while (input.ReadTag(out tag)) {
+        switch(tag) {
+          case 0:
+            throw pb::InvalidProtocolBufferException.InvalidTag();
+          default:
+            if (pb::WireFormat.IsEndGroupTag(tag)) {
+              return;
+            }
+            break;
+          case 8: {
+            ctype_ = (global::Google.Protobuf.Reflection.FieldOptions.Types.CType) input.ReadEnum();
+            break;
+          }
+          case 16: {
+            Packed = input.ReadBool();
+            break;
+          }
+          case 24: {
+            Deprecated = input.ReadBool();
+            break;
+          }
+          case 40: {
+            Lazy = input.ReadBool();
+            break;
+          }
+          case 48: {
+            jstype_ = (global::Google.Protobuf.Reflection.FieldOptions.Types.JSType) input.ReadEnum();
+            break;
+          }
+          case 80: {
+            Weak = input.ReadBool();
+            break;
+          }
+          case 7994: {
+            uninterpretedOption_.AddEntriesFrom(input, _repeated_uninterpretedOption_codec);
+            break;
+          }
+        }
+      }
+    }
+
+    #region Nested types
+    [global::System.Diagnostics.DebuggerNonUserCodeAttribute()]
+    public static partial class Types {
+      internal enum CType {
+        STRING = 0,
+        CORD = 1,
+        STRING_PIECE = 2,
+      }
+
+      internal enum JSType {
+        JS_NORMAL = 0,
+        JS_STRING = 1,
+        JS_NUMBER = 2,
+      }
+
+    }
+    #endregion
+
+  }
+
+  [global::System.Diagnostics.DebuggerNonUserCodeAttribute()]
+  internal sealed partial class EnumOptions : pb::IMessage<EnumOptions> {
+    private static readonly pb::MessageParser<EnumOptions> _parser = new pb::MessageParser<EnumOptions>(() => new EnumOptions());
+    public static pb::MessageParser<EnumOptions> Parser { get { return _parser; } }
+
+    private static readonly string[] _fieldNames = new string[] { "allow_alias", "deprecated", "uninterpreted_option" };
+    private static readonly uint[] _fieldTags = new uint[] { 16, 24, 7994 };
+    public static pbr::MessageDescriptor Descriptor {
+      get { return global::Google.Protobuf.Reflection.DescriptorProtoFile.Descriptor.MessageTypes[12]; }
+    }
+
+    pbr::FieldAccessorTable pb::IReflectedMessage.Fields {
+      get { return global::Google.Protobuf.Reflection.DescriptorProtoFile.internal__static_google_protobuf_EnumOptions__FieldAccessorTable; }
+    }
+
+    private bool _frozen = false;
+    public bool IsFrozen { get { return _frozen; } }
+
+    public EnumOptions() {
+      OnConstruction();
+    }
+
+    partial void OnConstruction();
+
+    public EnumOptions(EnumOptions other) : this() {
+      allowAlias_ = other.allowAlias_;
+      deprecated_ = other.deprecated_;
+      uninterpretedOption_ = other.uninterpretedOption_.Clone();
+    }
+
+    public EnumOptions Clone() {
+      return new EnumOptions(this);
+    }
+
+    public void Freeze() {
+      if (IsFrozen) {
+        return;
+      }
+      _frozen = true;
+      uninterpretedOption_.Freeze();
+    }
+
+    public const int AllowAliasFieldNumber = 2;
+    private bool allowAlias_;
+    internal bool AllowAlias {
+      get { return allowAlias_; }
+      set {
+        pb::Freezable.CheckMutable(this);
+        allowAlias_ = value;
+      }
+    }
+
+    public const int DeprecatedFieldNumber = 3;
+    private bool deprecated_;
+    internal bool Deprecated {
+      get { return deprecated_; }
+      set {
+        pb::Freezable.CheckMutable(this);
+        deprecated_ = value;
+      }
+    }
+
+    public const int UninterpretedOptionFieldNumber = 999;
+    private static readonly pb::FieldCodec<global::Google.Protobuf.Reflection.UninterpretedOption> _repeated_uninterpretedOption_codec
+        = pb::FieldCodec.ForMessage(7994, global::Google.Protobuf.Reflection.UninterpretedOption.Parser);
+    private readonly pbc::RepeatedField<global::Google.Protobuf.Reflection.UninterpretedOption> uninterpretedOption_ = new pbc::RepeatedField<global::Google.Protobuf.Reflection.UninterpretedOption>();
+    internal pbc::RepeatedField<global::Google.Protobuf.Reflection.UninterpretedOption> UninterpretedOption {
+      get { return uninterpretedOption_; }
+    }
+
+    public override bool Equals(object other) {
+      return Equals(other as EnumOptions);
+    }
+
+    public bool Equals(EnumOptions other) {
+      if (ReferenceEquals(other, null)) {
+        return false;
+      }
+      if (ReferenceEquals(other, this)) {
+        return true;
+      }
+      if (AllowAlias != other.AllowAlias) return false;
+      if (Deprecated != other.Deprecated) return false;
+      if(!uninterpretedOption_.Equals(other.uninterpretedOption_)) return false;
+      return true;
+    }
+
+    public override int GetHashCode() {
+      int hash = 1;
+      if (AllowAlias != false) hash ^= AllowAlias.GetHashCode();
+      if (Deprecated != false) hash ^= Deprecated.GetHashCode();
+      hash ^= uninterpretedOption_.GetHashCode();
+      return hash;
+    }
+
+    public override string ToString() {
+      return pb::JsonFormatter.Default.Format(this);
+    }
+
+    public void WriteTo(pb::CodedOutputStream output) {
+      if (AllowAlias != false) {
+        output.WriteRawTag(16);
+        output.WriteBool(AllowAlias);
+      }
+      if (Deprecated != false) {
+        output.WriteRawTag(24);
+        output.WriteBool(Deprecated);
+      }
+      uninterpretedOption_.WriteTo(output, _repeated_uninterpretedOption_codec);
+    }
+
+    public int CalculateSize() {
+      int size = 0;
+      if (AllowAlias != false) {
+        size += 1 + 1;
+      }
+      if (Deprecated != false) {
+        size += 1 + 1;
+      }
+      size += uninterpretedOption_.CalculateSize(_repeated_uninterpretedOption_codec);
+      return size;
+    }
+
+    public void MergeFrom(EnumOptions other) {
+      if (other == null) {
+        return;
+      }
+      if (other.AllowAlias != false) {
+        AllowAlias = other.AllowAlias;
+      }
+      if (other.Deprecated != false) {
+        Deprecated = other.Deprecated;
+      }
+      uninterpretedOption_.Add(other.uninterpretedOption_);
+    }
+
+    public void MergeFrom(pb::CodedInputStream input) {
+      uint tag;
+      while (input.ReadTag(out tag)) {
+        switch(tag) {
+          case 0:
+            throw pb::InvalidProtocolBufferException.InvalidTag();
+          default:
+            if (pb::WireFormat.IsEndGroupTag(tag)) {
+              return;
+            }
+            break;
+          case 16: {
+            AllowAlias = input.ReadBool();
+            break;
+          }
+          case 24: {
+            Deprecated = input.ReadBool();
+            break;
+          }
+          case 7994: {
+            uninterpretedOption_.AddEntriesFrom(input, _repeated_uninterpretedOption_codec);
+            break;
+          }
+        }
+      }
+    }
+
+  }
+
+  [global::System.Diagnostics.DebuggerNonUserCodeAttribute()]
+  internal sealed partial class EnumValueOptions : pb::IMessage<EnumValueOptions> {
+    private static readonly pb::MessageParser<EnumValueOptions> _parser = new pb::MessageParser<EnumValueOptions>(() => new EnumValueOptions());
+    public static pb::MessageParser<EnumValueOptions> Parser { get { return _parser; } }
+
+    private static readonly string[] _fieldNames = new string[] { "deprecated", "uninterpreted_option" };
+    private static readonly uint[] _fieldTags = new uint[] { 8, 7994 };
+    public static pbr::MessageDescriptor Descriptor {
+      get { return global::Google.Protobuf.Reflection.DescriptorProtoFile.Descriptor.MessageTypes[13]; }
+    }
+
+    pbr::FieldAccessorTable pb::IReflectedMessage.Fields {
+      get { return global::Google.Protobuf.Reflection.DescriptorProtoFile.internal__static_google_protobuf_EnumValueOptions__FieldAccessorTable; }
+    }
+
+    private bool _frozen = false;
+    public bool IsFrozen { get { return _frozen; } }
+
+    public EnumValueOptions() {
+      OnConstruction();
+    }
+
+    partial void OnConstruction();
+
+    public EnumValueOptions(EnumValueOptions other) : this() {
+      deprecated_ = other.deprecated_;
+      uninterpretedOption_ = other.uninterpretedOption_.Clone();
+    }
+
+    public EnumValueOptions Clone() {
+      return new EnumValueOptions(this);
+    }
+
+    public void Freeze() {
+      if (IsFrozen) {
+        return;
+      }
+      _frozen = true;
+      uninterpretedOption_.Freeze();
+    }
+
+    public const int DeprecatedFieldNumber = 1;
+    private bool deprecated_;
+    internal bool Deprecated {
+      get { return deprecated_; }
+      set {
+        pb::Freezable.CheckMutable(this);
+        deprecated_ = value;
+      }
+    }
+
+    public const int UninterpretedOptionFieldNumber = 999;
+    private static readonly pb::FieldCodec<global::Google.Protobuf.Reflection.UninterpretedOption> _repeated_uninterpretedOption_codec
+        = pb::FieldCodec.ForMessage(7994, global::Google.Protobuf.Reflection.UninterpretedOption.Parser);
+    private readonly pbc::RepeatedField<global::Google.Protobuf.Reflection.UninterpretedOption> uninterpretedOption_ = new pbc::RepeatedField<global::Google.Protobuf.Reflection.UninterpretedOption>();
+    internal pbc::RepeatedField<global::Google.Protobuf.Reflection.UninterpretedOption> UninterpretedOption {
+      get { return uninterpretedOption_; }
+    }
+
+    public override bool Equals(object other) {
+      return Equals(other as EnumValueOptions);
+    }
+
+    public bool Equals(EnumValueOptions other) {
+      if (ReferenceEquals(other, null)) {
+        return false;
+      }
+      if (ReferenceEquals(other, this)) {
+        return true;
+      }
+      if (Deprecated != other.Deprecated) return false;
+      if(!uninterpretedOption_.Equals(other.uninterpretedOption_)) return false;
+      return true;
+    }
+
+    public override int GetHashCode() {
+      int hash = 1;
+      if (Deprecated != false) hash ^= Deprecated.GetHashCode();
+      hash ^= uninterpretedOption_.GetHashCode();
+      return hash;
+    }
+
+    public override string ToString() {
+      return pb::JsonFormatter.Default.Format(this);
+    }
+
+    public void WriteTo(pb::CodedOutputStream output) {
+      if (Deprecated != false) {
+        output.WriteRawTag(8);
+        output.WriteBool(Deprecated);
+      }
+      uninterpretedOption_.WriteTo(output, _repeated_uninterpretedOption_codec);
+    }
+
+    public int CalculateSize() {
+      int size = 0;
+      if (Deprecated != false) {
+        size += 1 + 1;
+      }
+      size += uninterpretedOption_.CalculateSize(_repeated_uninterpretedOption_codec);
+      return size;
+    }
+
+    public void MergeFrom(EnumValueOptions other) {
+      if (other == null) {
+        return;
+      }
+      if (other.Deprecated != false) {
+        Deprecated = other.Deprecated;
+      }
+      uninterpretedOption_.Add(other.uninterpretedOption_);
+    }
+
+    public void MergeFrom(pb::CodedInputStream input) {
+      uint tag;
+      while (input.ReadTag(out tag)) {
+        switch(tag) {
+          case 0:
+            throw pb::InvalidProtocolBufferException.InvalidTag();
+          default:
+            if (pb::WireFormat.IsEndGroupTag(tag)) {
+              return;
+            }
+            break;
+          case 8: {
+            Deprecated = input.ReadBool();
+            break;
+          }
+          case 7994: {
+            uninterpretedOption_.AddEntriesFrom(input, _repeated_uninterpretedOption_codec);
+            break;
+          }
+        }
+      }
+    }
+
+  }
+
+  [global::System.Diagnostics.DebuggerNonUserCodeAttribute()]
+  internal sealed partial class ServiceOptions : pb::IMessage<ServiceOptions> {
+    private static readonly pb::MessageParser<ServiceOptions> _parser = new pb::MessageParser<ServiceOptions>(() => new ServiceOptions());
+    public static pb::MessageParser<ServiceOptions> Parser { get { return _parser; } }
+
+    private static readonly string[] _fieldNames = new string[] { "deprecated", "uninterpreted_option" };
+    private static readonly uint[] _fieldTags = new uint[] { 264, 7994 };
+    public static pbr::MessageDescriptor Descriptor {
+      get { return global::Google.Protobuf.Reflection.DescriptorProtoFile.Descriptor.MessageTypes[14]; }
+    }
+
+    pbr::FieldAccessorTable pb::IReflectedMessage.Fields {
+      get { return global::Google.Protobuf.Reflection.DescriptorProtoFile.internal__static_google_protobuf_ServiceOptions__FieldAccessorTable; }
+    }
+
+    private bool _frozen = false;
+    public bool IsFrozen { get { return _frozen; } }
+
+    public ServiceOptions() {
+      OnConstruction();
+    }
+
+    partial void OnConstruction();
+
+    public ServiceOptions(ServiceOptions other) : this() {
+      deprecated_ = other.deprecated_;
+      uninterpretedOption_ = other.uninterpretedOption_.Clone();
+    }
+
+    public ServiceOptions Clone() {
+      return new ServiceOptions(this);
+    }
+
+    public void Freeze() {
+      if (IsFrozen) {
+        return;
+      }
+      _frozen = true;
+      uninterpretedOption_.Freeze();
+    }
+
+    public const int DeprecatedFieldNumber = 33;
+    private bool deprecated_;
+    internal bool Deprecated {
+      get { return deprecated_; }
+      set {
+        pb::Freezable.CheckMutable(this);
+        deprecated_ = value;
+      }
+    }
+
+    public const int UninterpretedOptionFieldNumber = 999;
+    private static readonly pb::FieldCodec<global::Google.Protobuf.Reflection.UninterpretedOption> _repeated_uninterpretedOption_codec
+        = pb::FieldCodec.ForMessage(7994, global::Google.Protobuf.Reflection.UninterpretedOption.Parser);
+    private readonly pbc::RepeatedField<global::Google.Protobuf.Reflection.UninterpretedOption> uninterpretedOption_ = new pbc::RepeatedField<global::Google.Protobuf.Reflection.UninterpretedOption>();
+    internal pbc::RepeatedField<global::Google.Protobuf.Reflection.UninterpretedOption> UninterpretedOption {
+      get { return uninterpretedOption_; }
+    }
+
+    public override bool Equals(object other) {
+      return Equals(other as ServiceOptions);
+    }
+
+    public bool Equals(ServiceOptions other) {
+      if (ReferenceEquals(other, null)) {
+        return false;
+      }
+      if (ReferenceEquals(other, this)) {
+        return true;
+      }
+      if (Deprecated != other.Deprecated) return false;
+      if(!uninterpretedOption_.Equals(other.uninterpretedOption_)) return false;
+      return true;
+    }
+
+    public override int GetHashCode() {
+      int hash = 1;
+      if (Deprecated != false) hash ^= Deprecated.GetHashCode();
+      hash ^= uninterpretedOption_.GetHashCode();
+      return hash;
+    }
+
+    public override string ToString() {
+      return pb::JsonFormatter.Default.Format(this);
+    }
+
+    public void WriteTo(pb::CodedOutputStream output) {
+      if (Deprecated != false) {
+        output.WriteRawTag(136, 2);
+        output.WriteBool(Deprecated);
+      }
+      uninterpretedOption_.WriteTo(output, _repeated_uninterpretedOption_codec);
+    }
+
+    public int CalculateSize() {
+      int size = 0;
+      if (Deprecated != false) {
+        size += 2 + 1;
+      }
+      size += uninterpretedOption_.CalculateSize(_repeated_uninterpretedOption_codec);
+      return size;
+    }
+
+    public void MergeFrom(ServiceOptions other) {
+      if (other == null) {
+        return;
+      }
+      if (other.Deprecated != false) {
+        Deprecated = other.Deprecated;
+      }
+      uninterpretedOption_.Add(other.uninterpretedOption_);
+    }
+
+    public void MergeFrom(pb::CodedInputStream input) {
+      uint tag;
+      while (input.ReadTag(out tag)) {
+        switch(tag) {
+          case 0:
+            throw pb::InvalidProtocolBufferException.InvalidTag();
+          default:
+            if (pb::WireFormat.IsEndGroupTag(tag)) {
+              return;
+            }
+            break;
+          case 264: {
+            Deprecated = input.ReadBool();
+            break;
+          }
+          case 7994: {
+            uninterpretedOption_.AddEntriesFrom(input, _repeated_uninterpretedOption_codec);
+            break;
+          }
+        }
+      }
+    }
+
+  }
+
+  [global::System.Diagnostics.DebuggerNonUserCodeAttribute()]
+  internal sealed partial class MethodOptions : pb::IMessage<MethodOptions> {
+    private static readonly pb::MessageParser<MethodOptions> _parser = new pb::MessageParser<MethodOptions>(() => new MethodOptions());
+    public static pb::MessageParser<MethodOptions> Parser { get { return _parser; } }
+
+    private static readonly string[] _fieldNames = new string[] { "deprecated", "uninterpreted_option" };
+    private static readonly uint[] _fieldTags = new uint[] { 264, 7994 };
+    public static pbr::MessageDescriptor Descriptor {
+      get { return global::Google.Protobuf.Reflection.DescriptorProtoFile.Descriptor.MessageTypes[15]; }
+    }
+
+    pbr::FieldAccessorTable pb::IReflectedMessage.Fields {
+      get { return global::Google.Protobuf.Reflection.DescriptorProtoFile.internal__static_google_protobuf_MethodOptions__FieldAccessorTable; }
+    }
+
+    private bool _frozen = false;
+    public bool IsFrozen { get { return _frozen; } }
+
+    public MethodOptions() {
+      OnConstruction();
+    }
+
+    partial void OnConstruction();
+
+    public MethodOptions(MethodOptions other) : this() {
+      deprecated_ = other.deprecated_;
+      uninterpretedOption_ = other.uninterpretedOption_.Clone();
+    }
+
+    public MethodOptions Clone() {
+      return new MethodOptions(this);
+    }
+
+    public void Freeze() {
+      if (IsFrozen) {
+        return;
+      }
+      _frozen = true;
+      uninterpretedOption_.Freeze();
+    }
+
+    public const int DeprecatedFieldNumber = 33;
+    private bool deprecated_;
+    internal bool Deprecated {
+      get { return deprecated_; }
+      set {
+        pb::Freezable.CheckMutable(this);
+        deprecated_ = value;
+      }
+    }
+
+    public const int UninterpretedOptionFieldNumber = 999;
+    private static readonly pb::FieldCodec<global::Google.Protobuf.Reflection.UninterpretedOption> _repeated_uninterpretedOption_codec
+        = pb::FieldCodec.ForMessage(7994, global::Google.Protobuf.Reflection.UninterpretedOption.Parser);
+    private readonly pbc::RepeatedField<global::Google.Protobuf.Reflection.UninterpretedOption> uninterpretedOption_ = new pbc::RepeatedField<global::Google.Protobuf.Reflection.UninterpretedOption>();
+    internal pbc::RepeatedField<global::Google.Protobuf.Reflection.UninterpretedOption> UninterpretedOption {
+      get { return uninterpretedOption_; }
+    }
+
+    public override bool Equals(object other) {
+      return Equals(other as MethodOptions);
+    }
+
+    public bool Equals(MethodOptions other) {
+      if (ReferenceEquals(other, null)) {
+        return false;
+      }
+      if (ReferenceEquals(other, this)) {
+        return true;
+      }
+      if (Deprecated != other.Deprecated) return false;
+      if(!uninterpretedOption_.Equals(other.uninterpretedOption_)) return false;
+      return true;
+    }
+
+    public override int GetHashCode() {
+      int hash = 1;
+      if (Deprecated != false) hash ^= Deprecated.GetHashCode();
+      hash ^= uninterpretedOption_.GetHashCode();
+      return hash;
+    }
+
+    public override string ToString() {
+      return pb::JsonFormatter.Default.Format(this);
+    }
+
+    public void WriteTo(pb::CodedOutputStream output) {
+      if (Deprecated != false) {
+        output.WriteRawTag(136, 2);
+        output.WriteBool(Deprecated);
+      }
+      uninterpretedOption_.WriteTo(output, _repeated_uninterpretedOption_codec);
+    }
+
+    public int CalculateSize() {
+      int size = 0;
+      if (Deprecated != false) {
+        size += 2 + 1;
+      }
+      size += uninterpretedOption_.CalculateSize(_repeated_uninterpretedOption_codec);
+      return size;
+    }
+
+    public void MergeFrom(MethodOptions other) {
+      if (other == null) {
+        return;
+      }
+      if (other.Deprecated != false) {
+        Deprecated = other.Deprecated;
+      }
+      uninterpretedOption_.Add(other.uninterpretedOption_);
+    }
+
+    public void MergeFrom(pb::CodedInputStream input) {
+      uint tag;
+      while (input.ReadTag(out tag)) {
+        switch(tag) {
+          case 0:
+            throw pb::InvalidProtocolBufferException.InvalidTag();
+          default:
+            if (pb::WireFormat.IsEndGroupTag(tag)) {
+              return;
+            }
+            break;
+          case 264: {
+            Deprecated = input.ReadBool();
+            break;
+          }
+          case 7994: {
+            uninterpretedOption_.AddEntriesFrom(input, _repeated_uninterpretedOption_codec);
+            break;
+          }
+        }
+      }
+    }
+
+  }
+
+  [global::System.Diagnostics.DebuggerNonUserCodeAttribute()]
+  internal sealed partial class UninterpretedOption : pb::IMessage<UninterpretedOption> {
+    private static readonly pb::MessageParser<UninterpretedOption> _parser = new pb::MessageParser<UninterpretedOption>(() => new UninterpretedOption());
+    public static pb::MessageParser<UninterpretedOption> Parser { get { return _parser; } }
+
+    private static readonly string[] _fieldNames = new string[] { "aggregate_value", "double_value", "identifier_value", "name", "negative_int_value", "positive_int_value", "string_value" };
+    private static readonly uint[] _fieldTags = new uint[] { 66, 49, 26, 18, 40, 32, 58 };
+    public static pbr::MessageDescriptor Descriptor {
+      get { return global::Google.Protobuf.Reflection.DescriptorProtoFile.Descriptor.MessageTypes[16]; }
+    }
+
+    pbr::FieldAccessorTable pb::IReflectedMessage.Fields {
+      get { return global::Google.Protobuf.Reflection.DescriptorProtoFile.internal__static_google_protobuf_UninterpretedOption__FieldAccessorTable; }
+    }
+
+    private bool _frozen = false;
+    public bool IsFrozen { get { return _frozen; } }
+
+    public UninterpretedOption() {
+      OnConstruction();
+    }
+
+    partial void OnConstruction();
+
+    public UninterpretedOption(UninterpretedOption other) : this() {
+      name_ = other.name_.Clone();
+      identifierValue_ = other.identifierValue_;
+      positiveIntValue_ = other.positiveIntValue_;
+      negativeIntValue_ = other.negativeIntValue_;
+      doubleValue_ = other.doubleValue_;
+      stringValue_ = other.stringValue_;
+      aggregateValue_ = other.aggregateValue_;
+    }
+
+    public UninterpretedOption Clone() {
+      return new UninterpretedOption(this);
+    }
+
+    public void Freeze() {
+      if (IsFrozen) {
+        return;
+      }
+      _frozen = true;
+      name_.Freeze();
+    }
+
+    public const int NameFieldNumber = 2;
+    private static readonly pb::FieldCodec<global::Google.Protobuf.Reflection.UninterpretedOption.Types.NamePart> _repeated_name_codec
+        = pb::FieldCodec.ForMessage(18, global::Google.Protobuf.Reflection.UninterpretedOption.Types.NamePart.Parser);
+    private readonly pbc::RepeatedField<global::Google.Protobuf.Reflection.UninterpretedOption.Types.NamePart> name_ = new pbc::RepeatedField<global::Google.Protobuf.Reflection.UninterpretedOption.Types.NamePart>();
+    internal pbc::RepeatedField<global::Google.Protobuf.Reflection.UninterpretedOption.Types.NamePart> Name {
+      get { return name_; }
+    }
+
+    public const int IdentifierValueFieldNumber = 3;
+    private string identifierValue_ = "";
+    internal string IdentifierValue {
+      get { return identifierValue_; }
+      set {
+        pb::Freezable.CheckMutable(this);
+        identifierValue_ = value ?? "";
+      }
+    }
+
+    public const int PositiveIntValueFieldNumber = 4;
+    private ulong positiveIntValue_;
+    internal ulong PositiveIntValue {
+      get { return positiveIntValue_; }
+      set {
+        pb::Freezable.CheckMutable(this);
+        positiveIntValue_ = value;
+      }
+    }
+
+    public const int NegativeIntValueFieldNumber = 5;
+    private long negativeIntValue_;
+    internal long NegativeIntValue {
+      get { return negativeIntValue_; }
+      set {
+        pb::Freezable.CheckMutable(this);
+        negativeIntValue_ = value;
+      }
+    }
+
+    public const int DoubleValueFieldNumber = 6;
+    private double doubleValue_;
+    internal double DoubleValue {
+      get { return doubleValue_; }
+      set {
+        pb::Freezable.CheckMutable(this);
+        doubleValue_ = value;
+      }
+    }
+
+    public const int StringValueFieldNumber = 7;
+    private pb::ByteString stringValue_ = pb::ByteString.Empty;
+    internal pb::ByteString StringValue {
+      get { return stringValue_; }
+      set {
+        pb::Freezable.CheckMutable(this);
+        stringValue_ = value ?? pb::ByteString.Empty;
+      }
+    }
+
+    public const int AggregateValueFieldNumber = 8;
+    private string aggregateValue_ = "";
+    internal string AggregateValue {
+      get { return aggregateValue_; }
+      set {
+        pb::Freezable.CheckMutable(this);
+        aggregateValue_ = value ?? "";
+      }
+    }
+
+    public override bool Equals(object other) {
+      return Equals(other as UninterpretedOption);
+    }
+
+    public bool Equals(UninterpretedOption other) {
+      if (ReferenceEquals(other, null)) {
+        return false;
+      }
+      if (ReferenceEquals(other, this)) {
+        return true;
+      }
+      if(!name_.Equals(other.name_)) return false;
+      if (IdentifierValue != other.IdentifierValue) return false;
+      if (PositiveIntValue != other.PositiveIntValue) return false;
+      if (NegativeIntValue != other.NegativeIntValue) return false;
+      if (DoubleValue != other.DoubleValue) return false;
+      if (StringValue != other.StringValue) return false;
+      if (AggregateValue != other.AggregateValue) return false;
+      return true;
+    }
+
+    public override int GetHashCode() {
+      int hash = 1;
+      hash ^= name_.GetHashCode();
+      if (IdentifierValue.Length != 0) hash ^= IdentifierValue.GetHashCode();
+      if (PositiveIntValue != 0UL) hash ^= PositiveIntValue.GetHashCode();
+      if (NegativeIntValue != 0L) hash ^= NegativeIntValue.GetHashCode();
+      if (DoubleValue != 0D) hash ^= DoubleValue.GetHashCode();
+      if (StringValue.Length != 0) hash ^= StringValue.GetHashCode();
+      if (AggregateValue.Length != 0) hash ^= AggregateValue.GetHashCode();
+      return hash;
+    }
+
+    public override string ToString() {
+      return pb::JsonFormatter.Default.Format(this);
+    }
+
+    public void WriteTo(pb::CodedOutputStream output) {
+      name_.WriteTo(output, _repeated_name_codec);
+      if (IdentifierValue.Length != 0) {
+        output.WriteRawTag(26);
+        output.WriteString(IdentifierValue);
+      }
+      if (PositiveIntValue != 0UL) {
+        output.WriteRawTag(32);
+        output.WriteUInt64(PositiveIntValue);
+      }
+      if (NegativeIntValue != 0L) {
+        output.WriteRawTag(40);
+        output.WriteInt64(NegativeIntValue);
+      }
+      if (DoubleValue != 0D) {
+        output.WriteRawTag(49);
+        output.WriteDouble(DoubleValue);
+      }
+      if (StringValue.Length != 0) {
+        output.WriteRawTag(58);
+        output.WriteBytes(StringValue);
+      }
+      if (AggregateValue.Length != 0) {
+        output.WriteRawTag(66);
+        output.WriteString(AggregateValue);
+      }
+    }
+
+    public int CalculateSize() {
+      int size = 0;
+      size += name_.CalculateSize(_repeated_name_codec);
+      if (IdentifierValue.Length != 0) {
+        size += 1 + pb::CodedOutputStream.ComputeStringSize(IdentifierValue);
+      }
+      if (PositiveIntValue != 0UL) {
+        size += 1 + pb::CodedOutputStream.ComputeUInt64Size(PositiveIntValue);
+      }
+      if (NegativeIntValue != 0L) {
+        size += 1 + pb::CodedOutputStream.ComputeInt64Size(NegativeIntValue);
+      }
+      if (DoubleValue != 0D) {
+        size += 1 + 8;
+      }
+      if (StringValue.Length != 0) {
+        size += 1 + pb::CodedOutputStream.ComputeBytesSize(StringValue);
+      }
+      if (AggregateValue.Length != 0) {
+        size += 1 + pb::CodedOutputStream.ComputeStringSize(AggregateValue);
+      }
+      return size;
+    }
+
+    public void MergeFrom(UninterpretedOption other) {
+      if (other == null) {
+        return;
+      }
+      name_.Add(other.name_);
+      if (other.IdentifierValue.Length != 0) {
+        IdentifierValue = other.IdentifierValue;
+      }
+      if (other.PositiveIntValue != 0UL) {
+        PositiveIntValue = other.PositiveIntValue;
+      }
+      if (other.NegativeIntValue != 0L) {
+        NegativeIntValue = other.NegativeIntValue;
+      }
+      if (other.DoubleValue != 0D) {
+        DoubleValue = other.DoubleValue;
+      }
+      if (other.StringValue.Length != 0) {
+        StringValue = other.StringValue;
+      }
+      if (other.AggregateValue.Length != 0) {
+        AggregateValue = other.AggregateValue;
+      }
+    }
+
+    public void MergeFrom(pb::CodedInputStream input) {
+      uint tag;
+      while (input.ReadTag(out tag)) {
+        switch(tag) {
+          case 0:
+            throw pb::InvalidProtocolBufferException.InvalidTag();
+          default:
+            if (pb::WireFormat.IsEndGroupTag(tag)) {
+              return;
+            }
+            break;
+          case 18: {
+            name_.AddEntriesFrom(input, _repeated_name_codec);
+            break;
+          }
+          case 26: {
+            IdentifierValue = input.ReadString();
+            break;
+          }
+          case 32: {
+            PositiveIntValue = input.ReadUInt64();
+            break;
+          }
+          case 40: {
+            NegativeIntValue = input.ReadInt64();
+            break;
+          }
+          case 49: {
+            DoubleValue = input.ReadDouble();
+            break;
+          }
+          case 58: {
+            StringValue = input.ReadBytes();
+            break;
+          }
+          case 66: {
+            AggregateValue = input.ReadString();
+            break;
+          }
+        }
+      }
+    }
+
+    #region Nested types
+    [global::System.Diagnostics.DebuggerNonUserCodeAttribute()]
+    public static partial class Types {
+      [global::System.Diagnostics.DebuggerNonUserCodeAttribute()]
+      internal sealed partial class NamePart : pb::IMessage<NamePart> {
+        private static readonly pb::MessageParser<NamePart> _parser = new pb::MessageParser<NamePart>(() => new NamePart());
+        public static pb::MessageParser<NamePart> Parser { get { return _parser; } }
+
+        private static readonly string[] _fieldNames = new string[] { "is_extension", "name_part" };
+        private static readonly uint[] _fieldTags = new uint[] { 16, 10 };
+        public static pbr::MessageDescriptor Descriptor {
+          get { return global::Google.Protobuf.Reflection.UninterpretedOption.Descriptor.NestedTypes[0]; }
+        }
+
+        pbr::FieldAccessorTable pb::IReflectedMessage.Fields {
+          get { return global::Google.Protobuf.Reflection.DescriptorProtoFile.internal__static_google_protobuf_UninterpretedOption_NamePart__FieldAccessorTable; }
+        }
+
+        private bool _frozen = false;
+        public bool IsFrozen { get { return _frozen; } }
+
+        public NamePart() {
+          OnConstruction();
+        }
+
+        partial void OnConstruction();
+
+        public NamePart(NamePart other) : this() {
+          namePart_ = other.namePart_;
+          isExtension_ = other.isExtension_;
+        }
+
+        public NamePart Clone() {
+          return new NamePart(this);
+        }
+
+        public void Freeze() {
+          if (IsFrozen) {
+            return;
+          }
+          _frozen = true;
+        }
+
+        public const int NamePart_FieldNumber = 1;
+        private string namePart_ = "";
+        internal string NamePart_ {
+          get { return namePart_; }
+          set {
+            pb::Freezable.CheckMutable(this);
+            namePart_ = value ?? "";
+          }
+        }
+
+        public const int IsExtensionFieldNumber = 2;
+        private bool isExtension_;
+        internal bool IsExtension {
+          get { return isExtension_; }
+          set {
+            pb::Freezable.CheckMutable(this);
+            isExtension_ = value;
+          }
+        }
+
+        public override bool Equals(object other) {
+          return Equals(other as NamePart);
+        }
+
+        public bool Equals(NamePart other) {
+          if (ReferenceEquals(other, null)) {
+            return false;
+          }
+          if (ReferenceEquals(other, this)) {
+            return true;
+          }
+          if (NamePart_ != other.NamePart_) return false;
+          if (IsExtension != other.IsExtension) return false;
+          return true;
+        }
+
+        public override int GetHashCode() {
+          int hash = 1;
+          if (NamePart_.Length != 0) hash ^= NamePart_.GetHashCode();
+          if (IsExtension != false) hash ^= IsExtension.GetHashCode();
+          return hash;
+        }
+
+        public override string ToString() {
+          return pb::JsonFormatter.Default.Format(this);
+        }
+
+        public void WriteTo(pb::CodedOutputStream output) {
+          if (NamePart_.Length != 0) {
+            output.WriteRawTag(10);
+            output.WriteString(NamePart_);
+          }
+          if (IsExtension != false) {
+            output.WriteRawTag(16);
+            output.WriteBool(IsExtension);
+          }
+        }
+
+        public int CalculateSize() {
+          int size = 0;
+          if (NamePart_.Length != 0) {
+            size += 1 + pb::CodedOutputStream.ComputeStringSize(NamePart_);
+          }
+          if (IsExtension != false) {
+            size += 1 + 1;
+          }
+          return size;
+        }
+
+        public void MergeFrom(NamePart other) {
+          if (other == null) {
+            return;
+          }
+          if (other.NamePart_.Length != 0) {
+            NamePart_ = other.NamePart_;
+          }
+          if (other.IsExtension != false) {
+            IsExtension = other.IsExtension;
+          }
+        }
+
+        public void MergeFrom(pb::CodedInputStream input) {
+          uint tag;
+          while (input.ReadTag(out tag)) {
+            switch(tag) {
+              case 0:
+                throw pb::InvalidProtocolBufferException.InvalidTag();
+              default:
+                if (pb::WireFormat.IsEndGroupTag(tag)) {
+                  return;
+                }
+                break;
+              case 10: {
+                NamePart_ = input.ReadString();
+                break;
+              }
+              case 16: {
+                IsExtension = input.ReadBool();
+                break;
+              }
+            }
+          }
+        }
+
+      }
+
+    }
+    #endregion
+
+  }
+
+  [global::System.Diagnostics.DebuggerNonUserCodeAttribute()]
+  internal sealed partial class SourceCodeInfo : pb::IMessage<SourceCodeInfo> {
+    private static readonly pb::MessageParser<SourceCodeInfo> _parser = new pb::MessageParser<SourceCodeInfo>(() => new SourceCodeInfo());
+    public static pb::MessageParser<SourceCodeInfo> Parser { get { return _parser; } }
+
+    private static readonly string[] _fieldNames = new string[] { "location" };
+    private static readonly uint[] _fieldTags = new uint[] { 10 };
+    public static pbr::MessageDescriptor Descriptor {
+      get { return global::Google.Protobuf.Reflection.DescriptorProtoFile.Descriptor.MessageTypes[17]; }
+    }
+
+    pbr::FieldAccessorTable pb::IReflectedMessage.Fields {
+      get { return global::Google.Protobuf.Reflection.DescriptorProtoFile.internal__static_google_protobuf_SourceCodeInfo__FieldAccessorTable; }
+    }
+
+    private bool _frozen = false;
+    public bool IsFrozen { get { return _frozen; } }
+
+    public SourceCodeInfo() {
+      OnConstruction();
+    }
+
+    partial void OnConstruction();
+
+    public SourceCodeInfo(SourceCodeInfo other) : this() {
+      location_ = other.location_.Clone();
+    }
+
+    public SourceCodeInfo Clone() {
+      return new SourceCodeInfo(this);
+    }
+
+    public void Freeze() {
+      if (IsFrozen) {
+        return;
+      }
+      _frozen = true;
+      location_.Freeze();
+    }
+
+    public const int LocationFieldNumber = 1;
+    private static readonly pb::FieldCodec<global::Google.Protobuf.Reflection.SourceCodeInfo.Types.Location> _repeated_location_codec
+        = pb::FieldCodec.ForMessage(10, global::Google.Protobuf.Reflection.SourceCodeInfo.Types.Location.Parser);
+    private readonly pbc::RepeatedField<global::Google.Protobuf.Reflection.SourceCodeInfo.Types.Location> location_ = new pbc::RepeatedField<global::Google.Protobuf.Reflection.SourceCodeInfo.Types.Location>();
+    internal pbc::RepeatedField<global::Google.Protobuf.Reflection.SourceCodeInfo.Types.Location> Location {
+      get { return location_; }
+    }
+
+    public override bool Equals(object other) {
+      return Equals(other as SourceCodeInfo);
+    }
+
+    public bool Equals(SourceCodeInfo other) {
+      if (ReferenceEquals(other, null)) {
+        return false;
+      }
+      if (ReferenceEquals(other, this)) {
+        return true;
+      }
+      if(!location_.Equals(other.location_)) return false;
+      return true;
+    }
+
+    public override int GetHashCode() {
+      int hash = 1;
+      hash ^= location_.GetHashCode();
+      return hash;
+    }
+
+    public override string ToString() {
+      return pb::JsonFormatter.Default.Format(this);
+    }
+
+    public void WriteTo(pb::CodedOutputStream output) {
+      location_.WriteTo(output, _repeated_location_codec);
+    }
+
+    public int CalculateSize() {
+      int size = 0;
+      size += location_.CalculateSize(_repeated_location_codec);
+      return size;
+    }
+
+    public void MergeFrom(SourceCodeInfo other) {
+      if (other == null) {
+        return;
+      }
+      location_.Add(other.location_);
+    }
+
+    public void MergeFrom(pb::CodedInputStream input) {
+      uint tag;
+      while (input.ReadTag(out tag)) {
+        switch(tag) {
+          case 0:
+            throw pb::InvalidProtocolBufferException.InvalidTag();
+          default:
+            if (pb::WireFormat.IsEndGroupTag(tag)) {
+              return;
+            }
+            break;
+          case 10: {
+            location_.AddEntriesFrom(input, _repeated_location_codec);
+            break;
+          }
+        }
+      }
+    }
+
+    #region Nested types
+    [global::System.Diagnostics.DebuggerNonUserCodeAttribute()]
+    public static partial class Types {
+      [global::System.Diagnostics.DebuggerNonUserCodeAttribute()]
+      internal sealed partial class Location : pb::IMessage<Location> {
+        private static readonly pb::MessageParser<Location> _parser = new pb::MessageParser<Location>(() => new Location());
+        public static pb::MessageParser<Location> Parser { get { return _parser; } }
+
+        private static readonly string[] _fieldNames = new string[] { "leading_comments", "leading_detached_comments", "path", "span", "trailing_comments" };
+        private static readonly uint[] _fieldTags = new uint[] { 26, 50, 10, 18, 34 };
+        public static pbr::MessageDescriptor Descriptor {
+          get { return global::Google.Protobuf.Reflection.SourceCodeInfo.Descriptor.NestedTypes[0]; }
+        }
+
+        pbr::FieldAccessorTable pb::IReflectedMessage.Fields {
+          get { return global::Google.Protobuf.Reflection.DescriptorProtoFile.internal__static_google_protobuf_SourceCodeInfo_Location__FieldAccessorTable; }
+        }
+
+        private bool _frozen = false;
+        public bool IsFrozen { get { return _frozen; } }
+
+        public Location() {
+          OnConstruction();
+        }
+
+        partial void OnConstruction();
+
+        public Location(Location other) : this() {
+          path_ = other.path_.Clone();
+          span_ = other.span_.Clone();
+          leadingComments_ = other.leadingComments_;
+          trailingComments_ = other.trailingComments_;
+          leadingDetachedComments_ = other.leadingDetachedComments_.Clone();
+        }
+
+        public Location Clone() {
+          return new Location(this);
+        }
+
+        public void Freeze() {
+          if (IsFrozen) {
+            return;
+          }
+          _frozen = true;
+          path_.Freeze();
+          span_.Freeze();
+          leadingDetachedComments_.Freeze();
+        }
+
+        public const int PathFieldNumber = 1;
+        private static readonly pb::FieldCodec<int> _repeated_path_codec
+            = pb::FieldCodec.ForInt32(10);
+        private readonly pbc::RepeatedField<int> path_ = new pbc::RepeatedField<int>();
+        internal pbc::RepeatedField<int> Path {
+          get { return path_; }
+        }
+
+        public const int SpanFieldNumber = 2;
+        private static readonly pb::FieldCodec<int> _repeated_span_codec
+            = pb::FieldCodec.ForInt32(18);
+        private readonly pbc::RepeatedField<int> span_ = new pbc::RepeatedField<int>();
+        internal pbc::RepeatedField<int> Span {
+          get { return span_; }
+        }
+
+        public const int LeadingCommentsFieldNumber = 3;
+        private string leadingComments_ = "";
+        internal string LeadingComments {
+          get { return leadingComments_; }
+          set {
+            pb::Freezable.CheckMutable(this);
+            leadingComments_ = value ?? "";
+          }
+        }
+
+        public const int TrailingCommentsFieldNumber = 4;
+        private string trailingComments_ = "";
+        internal string TrailingComments {
+          get { return trailingComments_; }
+          set {
+            pb::Freezable.CheckMutable(this);
+            trailingComments_ = value ?? "";
+          }
+        }
+
+        public const int LeadingDetachedCommentsFieldNumber = 6;
+        private static readonly pb::FieldCodec<string> _repeated_leadingDetachedComments_codec
+            = pb::FieldCodec.ForString(50);
+        private readonly pbc::RepeatedField<string> leadingDetachedComments_ = new pbc::RepeatedField<string>();
+        internal pbc::RepeatedField<string> LeadingDetachedComments {
+          get { return leadingDetachedComments_; }
+        }
+
+        public override bool Equals(object other) {
+          return Equals(other as Location);
+        }
+
+        public bool Equals(Location other) {
+          if (ReferenceEquals(other, null)) {
+            return false;
+          }
+          if (ReferenceEquals(other, this)) {
+            return true;
+          }
+          if(!path_.Equals(other.path_)) return false;
+          if(!span_.Equals(other.span_)) return false;
+          if (LeadingComments != other.LeadingComments) return false;
+          if (TrailingComments != other.TrailingComments) return false;
+          if(!leadingDetachedComments_.Equals(other.leadingDetachedComments_)) return false;
+          return true;
+        }
+
+        public override int GetHashCode() {
+          int hash = 1;
+          hash ^= path_.GetHashCode();
+          hash ^= span_.GetHashCode();
+          if (LeadingComments.Length != 0) hash ^= LeadingComments.GetHashCode();
+          if (TrailingComments.Length != 0) hash ^= TrailingComments.GetHashCode();
+          hash ^= leadingDetachedComments_.GetHashCode();
+          return hash;
+        }
+
+        public override string ToString() {
+          return pb::JsonFormatter.Default.Format(this);
+        }
+
+        public void WriteTo(pb::CodedOutputStream output) {
+          path_.WriteTo(output, _repeated_path_codec);
+          span_.WriteTo(output, _repeated_span_codec);
+          if (LeadingComments.Length != 0) {
+            output.WriteRawTag(26);
+            output.WriteString(LeadingComments);
+          }
+          if (TrailingComments.Length != 0) {
+            output.WriteRawTag(34);
+            output.WriteString(TrailingComments);
+          }
+          leadingDetachedComments_.WriteTo(output, _repeated_leadingDetachedComments_codec);
+        }
+
+        public int CalculateSize() {
+          int size = 0;
+          size += path_.CalculateSize(_repeated_path_codec);
+          size += span_.CalculateSize(_repeated_span_codec);
+          if (LeadingComments.Length != 0) {
+            size += 1 + pb::CodedOutputStream.ComputeStringSize(LeadingComments);
+          }
+          if (TrailingComments.Length != 0) {
+            size += 1 + pb::CodedOutputStream.ComputeStringSize(TrailingComments);
+          }
+          size += leadingDetachedComments_.CalculateSize(_repeated_leadingDetachedComments_codec);
+          return size;
+        }
+
+        public void MergeFrom(Location other) {
+          if (other == null) {
+            return;
+          }
+          path_.Add(other.path_);
+          span_.Add(other.span_);
+          if (other.LeadingComments.Length != 0) {
+            LeadingComments = other.LeadingComments;
+          }
+          if (other.TrailingComments.Length != 0) {
+            TrailingComments = other.TrailingComments;
+          }
+          leadingDetachedComments_.Add(other.leadingDetachedComments_);
+        }
+
+        public void MergeFrom(pb::CodedInputStream input) {
+          uint tag;
+          while (input.ReadTag(out tag)) {
+            switch(tag) {
+              case 0:
+                throw pb::InvalidProtocolBufferException.InvalidTag();
+              default:
+                if (pb::WireFormat.IsEndGroupTag(tag)) {
+                  return;
+                }
+                break;
+              case 10:
+              case 8: {
+                path_.AddEntriesFrom(input, _repeated_path_codec);
+                break;
+              }
+              case 18:
+              case 16: {
+                span_.AddEntriesFrom(input, _repeated_span_codec);
+                break;
+              }
+              case 26: {
+                LeadingComments = input.ReadString();
+                break;
+              }
+              case 34: {
+                TrailingComments = input.ReadString();
+                break;
+              }
+              case 50: {
+                leadingDetachedComments_.AddEntriesFrom(input, _repeated_leadingDetachedComments_codec);
+                break;
+              }
+            }
+          }
+        }
+
+      }
+
+    }
+    #endregion
+
+  }
+
+  #endregion
+
+}
+
+#endregion Designer generated code
diff --git a/csharp/src/Google.Protobuf/Reflection/DescriptorUtil.cs b/csharp/src/Google.Protobuf/Reflection/DescriptorUtil.cs
new file mode 100644
index 00000000..af31dfb1
--- /dev/null
+++ b/csharp/src/Google.Protobuf/Reflection/DescriptorUtil.cs
@@ -0,0 +1,65 @@
+#region Copyright notice and license
+// Protocol Buffers - Google's data interchange format
+// Copyright 2008 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.
+#endregion
+
+using System.Collections.Generic;
+using System.Collections.ObjectModel;
+
+namespace Google.Protobuf.Reflection
+{
+    /// <summary>
+    /// Internal class containing utility methods when working with descriptors.
+    /// </summary>
+    internal static class DescriptorUtil
+    {
+        /// <summary>
+        /// Equivalent to Func[TInput, int, TOutput] but usable in .NET 2.0. Only used to convert
+        /// arrays.
+        /// </summary>
+        internal delegate TOutput IndexedConverter<TInput, TOutput>(TInput element, int index);
+
+        /// <summary>
+        /// Converts the given array into a read-only list, applying the specified conversion to
+        /// each input element.
+        /// </summary>
+        internal static IList<TOutput> ConvertAndMakeReadOnly<TInput, TOutput>(IList<TInput> input,
+                                                                               IndexedConverter<TInput, TOutput>
+                                                                                   converter)
+        {
+            TOutput[] array = new TOutput[input.Count];
+            for (int i = 0; i < array.Length; i++)
+            {
+                array[i] = converter(input[i], i);
+            }
+            return new ReadOnlyCollection<TOutput>(array);
+        }
+    }
+}
\ No newline at end of file
diff --git a/csharp/src/Google.Protobuf/Reflection/DescriptorValidationException.cs b/csharp/src/Google.Protobuf/Reflection/DescriptorValidationException.cs
new file mode 100644
index 00000000..143671db
--- /dev/null
+++ b/csharp/src/Google.Protobuf/Reflection/DescriptorValidationException.cs
@@ -0,0 +1,80 @@
+#region Copyright notice and license
+// Protocol Buffers - Google's data interchange format
+// Copyright 2008 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.
+#endregion
+
+using System;
+
+namespace Google.Protobuf.Reflection
+{
+    /// <summary>
+    /// Thrown when building descriptors fails because the source DescriptorProtos
+    /// are not valid.
+    /// </summary>
+    public sealed class DescriptorValidationException : Exception
+    {
+        private readonly String name;
+        private readonly string description;
+
+        /// <value>
+        /// The full name of the descriptor where the error occurred.
+        /// </value>
+        public String ProblemSymbolName
+        {
+            get { return name; }
+        }
+
+        /// <value>
+        /// A human-readable description of the error. (The Message property
+        /// is made up of the descriptor's name and this description.)
+        /// </value>
+        public string Description
+        {
+            get { return description; }
+        }
+
+        internal DescriptorValidationException(IDescriptor problemDescriptor, string description) :
+            base(problemDescriptor.FullName + ": " + description)
+        {
+            // Note that problemDescriptor may be partially uninitialized, so we
+            // don't want to expose it directly to the user.  So, we only provide
+            // the name and the original proto.
+            name = problemDescriptor.FullName;
+            this.description = description;
+        }
+
+        internal DescriptorValidationException(IDescriptor problemDescriptor, string description, Exception cause) :
+            base(problemDescriptor.FullName + ": " + description, cause)
+        {
+            name = problemDescriptor.FullName;
+            this.description = description;
+        }
+    }
+}
\ No newline at end of file
diff --git a/csharp/src/Google.Protobuf/Reflection/EnumDescriptor.cs b/csharp/src/Google.Protobuf/Reflection/EnumDescriptor.cs
new file mode 100644
index 00000000..bf8f8c83
--- /dev/null
+++ b/csharp/src/Google.Protobuf/Reflection/EnumDescriptor.cs
@@ -0,0 +1,108 @@
+#region Copyright notice and license
+// Protocol Buffers - Google's data interchange format
+// Copyright 2008 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.
+#endregion
+
+using System.Collections.Generic;
+
+namespace Google.Protobuf.Reflection
+{
+    /// <summary>
+    /// Descriptor for an enum type in a .proto file.
+    /// </summary>
+    public sealed class EnumDescriptor : DescriptorBase
+    {
+        private readonly EnumDescriptorProto proto;
+        private readonly MessageDescriptor containingType;
+        private readonly IList<EnumValueDescriptor> values;
+
+        internal EnumDescriptor(EnumDescriptorProto proto, FileDescriptor file, MessageDescriptor parent, int index)
+            : base(file, file.ComputeFullName(parent, proto.Name), index)
+        {
+            this.proto = proto;
+            containingType = parent;
+
+            if (proto.Value.Count == 0)
+            {
+                // We cannot allow enums with no values because this would mean there
+                // would be no valid default value for fields of this type.
+                throw new DescriptorValidationException(this, "Enums must contain at least one value.");
+            }
+
+            values = DescriptorUtil.ConvertAndMakeReadOnly(proto.Value,
+                                                           (value, i) => new EnumValueDescriptor(value, file, this, i));
+
+            File.DescriptorPool.AddSymbol(this);
+        }
+
+        internal EnumDescriptorProto Proto { get { return proto; } }
+
+        /// <summary>
+        /// The brief name of the descriptor's target.
+        /// </summary>
+        public override string Name { get { return proto.Name; } }
+
+        /// <value>
+        /// If this is a nested type, get the outer descriptor, otherwise null.
+        /// </value>
+        public MessageDescriptor ContainingType
+        {
+            get { return containingType; }
+        }
+
+        /// <value>
+        /// An unmodifiable list of defined value descriptors for this enum.
+        /// </value>
+        public IList<EnumValueDescriptor> Values
+        {
+            get { return values; }
+        }
+
+        /// <summary>
+        /// Finds an enum value by number. If multiple enum values have the
+        /// same number, this returns the first defined value with that number.
+        /// If there is no value for the given number, this returns <c>null</c>.
+        /// </summary>
+        public EnumValueDescriptor FindValueByNumber(int number)
+        {
+            return File.DescriptorPool.FindEnumValueByNumber(this, number);
+        }
+
+        /// <summary>
+        /// Finds an enum value by name.
+        /// </summary>
+        /// <param name="name">The unqualified name of the value (e.g. "FOO").</param>
+        /// <returns>The value's descriptor, or null if not found.</returns>
+        public EnumValueDescriptor FindValueByName(string name)
+        {
+            return File.DescriptorPool.FindSymbol<EnumValueDescriptor>(FullName + "." + name);
+        }
+    }
+}
\ No newline at end of file
diff --git a/csharp/src/Google.Protobuf/Reflection/EnumValueDescriptor.cs b/csharp/src/Google.Protobuf/Reflection/EnumValueDescriptor.cs
new file mode 100644
index 00000000..29833c4a
--- /dev/null
+++ b/csharp/src/Google.Protobuf/Reflection/EnumValueDescriptor.cs
@@ -0,0 +1,61 @@
+#region Copyright notice and license
+// Protocol Buffers - Google's data interchange format
+// Copyright 2008 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.
+#endregion
+
+namespace Google.Protobuf.Reflection
+{
+    /// <summary>
+    /// Descriptor for a single enum value within an enum in a .proto file.
+    /// </summary>
+    public sealed class EnumValueDescriptor : DescriptorBase                                            
+    {
+        private readonly EnumDescriptor enumDescriptor;
+        private readonly EnumValueDescriptorProto proto;
+
+        internal EnumValueDescriptor(EnumValueDescriptorProto proto, FileDescriptor file,
+                                     EnumDescriptor parent, int index)
+            : base(file, parent.FullName + "." + proto.Name, index)
+        {
+            this.proto = proto;
+            enumDescriptor = parent;
+            file.DescriptorPool.AddSymbol(this);
+            file.DescriptorPool.AddEnumValueByNumber(this);
+        }
+
+        internal EnumValueDescriptorProto Proto { get { return proto; } }
+        
+        public override string Name { get { return proto.Name; } }
+
+        public int Number { get { return Proto.Number; } }
+
+        public EnumDescriptor EnumDescriptor { get { return enumDescriptor; } }
+    }
+}
\ No newline at end of file
diff --git a/csharp/src/Google.Protobuf/Reflection/FieldAccessorBase.cs b/csharp/src/Google.Protobuf/Reflection/FieldAccessorBase.cs
new file mode 100644
index 00000000..39a63b47
--- /dev/null
+++ b/csharp/src/Google.Protobuf/Reflection/FieldAccessorBase.cs
@@ -0,0 +1,67 @@
+#region Copyright notice and license
+// Protocol Buffers - Google's data interchange format
+// Copyright 2015 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.
+#endregion
+
+using System;
+using System.Reflection;
+
+namespace Google.Protobuf.Reflection
+{
+    /// <summary>
+    /// Base class for field accessors.
+    /// </summary>
+    internal abstract class FieldAccessorBase : IFieldAccessor
+    {
+        private readonly Func<object, object> getValueDelegate;
+        private readonly FieldDescriptor descriptor;
+
+        internal FieldAccessorBase(Type type, string propertyName, FieldDescriptor descriptor)
+        {
+            PropertyInfo property = type.GetProperty(propertyName);
+            if (property == null || !property.CanRead)
+            {
+                throw new ArgumentException("Not all required properties/methods available");
+            }
+            this.descriptor = descriptor;
+            getValueDelegate = ReflectionUtil.CreateFuncObjectObject(property.GetGetMethod());
+        }
+
+        public FieldDescriptor Descriptor { get { return descriptor; } }
+
+        public object GetValue(object message)
+        {
+            return getValueDelegate(message);
+        }
+
+        public abstract void Clear(object message);
+        public abstract void SetValue(object message, object value);
+    }
+}
diff --git a/csharp/src/Google.Protobuf/Reflection/FieldAccessorTable.cs b/csharp/src/Google.Protobuf/Reflection/FieldAccessorTable.cs
new file mode 100644
index 00000000..24fcbc64
--- /dev/null
+++ b/csharp/src/Google.Protobuf/Reflection/FieldAccessorTable.cs
@@ -0,0 +1,97 @@
+#region Copyright notice and license
+// Protocol Buffers - Google's data interchange format
+// Copyright 2008 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.
+#endregion
+
+using System;
+using System.Collections.ObjectModel;
+
+namespace Google.Protobuf.Reflection
+{
+    /// <summary>
+    /// Provides access to fields in generated messages via reflection.
+    /// </summary>
+    public sealed class FieldAccessorTable
+    {
+        private readonly ReadOnlyCollection<IFieldAccessor> accessors;
+        private readonly ReadOnlyCollection<OneofAccessor> oneofs;
+        private readonly MessageDescriptor descriptor;
+
+        /// <summary>
+        /// Constructs a FieldAccessorTable for a particular message class.
+        /// Only one FieldAccessorTable should be constructed per class.
+        /// </summary>
+        /// <param name="type">The CLR type for the message.</param>
+        /// <param name="descriptor">The type's descriptor</param>
+        /// <param name="propertyNames">The Pascal-case names of all the field-based properties in the message.</param>
+        public FieldAccessorTable(Type type, MessageDescriptor descriptor, string[] propertyNames, string[] oneofPropertyNames)
+        {
+            this.descriptor = descriptor;
+            var accessorsArray = new IFieldAccessor[descriptor.Fields.Count];
+            for (int i = 0; i < accessorsArray.Length; i++)
+            {
+                var field = descriptor.Fields[i];
+                var name = propertyNames[i];
+                accessorsArray[i] =
+                    field.IsMap ? new MapFieldAccessor(type, name, field)
+                    : field.IsRepeated ? new RepeatedFieldAccessor(type, name, field)
+                    : (IFieldAccessor) new SingleFieldAccessor(type, name, field);
+            }
+            accessors = new ReadOnlyCollection<IFieldAccessor>(accessorsArray);
+            var oneofsArray = new OneofAccessor[descriptor.Oneofs.Count];
+            for (int i = 0; i < oneofsArray.Length; i++)
+            {
+                var oneof = descriptor.Oneofs[i];
+                oneofsArray[i] = new OneofAccessor(type, oneofPropertyNames[i], oneof);
+            }
+            oneofs = new ReadOnlyCollection<OneofAccessor>(oneofsArray);
+        }
+
+        // TODO: Validate the name here... should possibly make this type a more "general reflection access" type,
+        // bearing in mind the oneof parts to come as well.
+        /// <summary>
+        /// Returns all of the field accessors for the message type.
+        /// </summary>
+        public ReadOnlyCollection<IFieldAccessor> Accessors { get { return accessors; } }
+
+        public ReadOnlyCollection<OneofAccessor> Oneofs { get { return oneofs; } }
+
+        // TODO: Review this, as it's easy to get confused between FieldNumber and Index.
+        // Currently only used to get an accessor related to a oneof... maybe just make that simpler?
+        public IFieldAccessor this[int fieldNumber]
+        {
+            get
+            {
+                FieldDescriptor field = descriptor.FindFieldByNumber(fieldNumber);
+                return accessors[field.Index];
+            }
+        }
+    }
+}
\ No newline at end of file
diff --git a/csharp/src/Google.Protobuf/Reflection/FieldDescriptor.cs b/csharp/src/Google.Protobuf/Reflection/FieldDescriptor.cs
new file mode 100644
index 00000000..3d9d0d75
--- /dev/null
+++ b/csharp/src/Google.Protobuf/Reflection/FieldDescriptor.cs
@@ -0,0 +1,292 @@
+#region Copyright notice and license
+// Protocol Buffers - Google's data interchange format
+// Copyright 2008 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.
+#endregion
+
+using System;
+
+namespace Google.Protobuf.Reflection
+{
+    /// <summary>
+    /// Descriptor for a field or extension within a message in a .proto file.
+    /// </summary>
+    public sealed class FieldDescriptor : DescriptorBase, IComparable<FieldDescriptor>
+    {
+        private readonly FieldDescriptorProto proto;
+        private EnumDescriptor enumType;
+        private MessageDescriptor messageType;
+        private readonly MessageDescriptor containingType;
+        private readonly OneofDescriptor containingOneof;
+        private FieldType fieldType;
+
+        internal FieldDescriptor(FieldDescriptorProto proto, FileDescriptor file,
+                                 MessageDescriptor parent, int index)
+            : base(file, file.ComputeFullName(parent, proto.Name), index)
+        {
+            this.proto = proto;
+            if (proto.Type != 0)
+            {
+                fieldType = GetFieldTypeFromProtoType(proto.Type);
+            }
+
+            if (FieldNumber <= 0)
+            {
+                throw new DescriptorValidationException(this,
+                                                        "Field numbers must be positive integers.");
+            }
+            containingType = parent;
+            // OneofIndex "defaults" to -1 due to a hack in FieldDescriptor.OnConstruction.
+            if (proto.OneofIndex != -1)
+            {
+                if (proto.OneofIndex < 0 || proto.OneofIndex >= parent.Proto.OneofDecl.Count)
+                {
+                    throw new DescriptorValidationException(this,
+                        "FieldDescriptorProto.oneof_index is out of range for type " + parent.Name);
+                }
+                containingOneof = parent.Oneofs[proto.OneofIndex];
+            }
+
+            file.DescriptorPool.AddSymbol(this);
+        }
+
+        /// <summary>
+        /// The brief name of the descriptor's target.
+        /// </summary>
+        public override string Name { get { return proto.Name; } }
+
+        internal FieldDescriptorProto Proto { get { return proto; } }
+        
+        /// <summary>
+        /// Maps a field type as included in the .proto file to a FieldType.
+        /// </summary>
+        private static FieldType GetFieldTypeFromProtoType(FieldDescriptorProto.Types.Type type)
+        {
+            switch (type)
+            {
+                case FieldDescriptorProto.Types.Type.TYPE_DOUBLE:
+                    return FieldType.Double;
+                case FieldDescriptorProto.Types.Type.TYPE_FLOAT:
+                    return FieldType.Float;
+                case FieldDescriptorProto.Types.Type.TYPE_INT64:
+                    return FieldType.Int64;
+                case FieldDescriptorProto.Types.Type.TYPE_UINT64:
+                    return FieldType.UInt64;
+                case FieldDescriptorProto.Types.Type.TYPE_INT32:
+                    return FieldType.Int32;
+                case FieldDescriptorProto.Types.Type.TYPE_FIXED64:
+                    return FieldType.Fixed64;
+                case FieldDescriptorProto.Types.Type.TYPE_FIXED32:
+                    return FieldType.Fixed32;
+                case FieldDescriptorProto.Types.Type.TYPE_BOOL:
+                    return FieldType.Bool;
+                case FieldDescriptorProto.Types.Type.TYPE_STRING:
+                    return FieldType.String;
+                case FieldDescriptorProto.Types.Type.TYPE_GROUP:
+                    return FieldType.Group;
+                case FieldDescriptorProto.Types.Type.TYPE_MESSAGE:
+                    return FieldType.Message;
+                case FieldDescriptorProto.Types.Type.TYPE_BYTES:
+                    return FieldType.Bytes;
+                case FieldDescriptorProto.Types.Type.TYPE_UINT32:
+                    return FieldType.UInt32;
+                case FieldDescriptorProto.Types.Type.TYPE_ENUM:
+                    return FieldType.Enum;
+                case FieldDescriptorProto.Types.Type.TYPE_SFIXED32:
+                    return FieldType.SFixed32;
+                case FieldDescriptorProto.Types.Type.TYPE_SFIXED64:
+                    return FieldType.SFixed64;
+                case FieldDescriptorProto.Types.Type.TYPE_SINT32:
+                    return FieldType.SInt32;
+                case FieldDescriptorProto.Types.Type.TYPE_SINT64:
+                    return FieldType.SInt64;
+                default:
+                    throw new ArgumentException("Invalid type specified");
+            }
+        }        
+
+        public bool IsRepeated
+        {
+            get { return Proto.Label == FieldDescriptorProto.Types.Label.LABEL_REPEATED; }
+        }
+
+        public bool IsMap
+        {
+            get { return fieldType == FieldType.Message && messageType.Proto.Options != null && messageType.Proto.Options.MapEntry; }
+        }
+
+        public bool IsPacked
+        {
+            get { return Proto.Options != null && Proto.Options.Packed; }
+        }        
+
+        /// <summary>
+        /// Get the field's containing type. For extensions, this is the type being
+        /// extended, not the location where the extension was defined. See
+        /// <see cref="ExtensionScope" />.
+        /// </summary>
+        public MessageDescriptor ContainingType
+        {
+            get { return containingType; }
+        }
+
+        public OneofDescriptor ContainingOneof
+        {
+            get { return containingOneof; }
+        }        
+
+        public FieldType FieldType
+        {
+            get { return fieldType; }
+        }
+
+        public int FieldNumber
+        {
+            get { return Proto.Number; }
+        }
+
+        /// <summary>
+        /// Compares this descriptor with another one, ordering in "canonical" order
+        /// which simply means ascending order by field number. <paramref name="other"/>
+        /// must be a field of the same type, i.e. the <see cref="ContainingType"/> of
+        /// both fields must be the same.
+        /// </summary>
+        public int CompareTo(FieldDescriptor other)
+        {
+            if (other.containingType != containingType)
+            {
+                throw new ArgumentException("FieldDescriptors can only be compared to other FieldDescriptors " +
+                                            "for fields of the same message type.");
+            }
+            return FieldNumber - other.FieldNumber;
+        }
+
+        /// <summary>
+        /// For enum fields, returns the field's type.
+        /// </summary>
+        public EnumDescriptor EnumType
+        {
+            get
+            {
+                if (fieldType != FieldType.Enum)
+                {
+                    throw new InvalidOperationException("EnumType is only valid for enum fields.");
+                }
+                return enumType;
+            }
+        }
+
+        /// <summary>
+        /// For embedded message and group fields, returns the field's type.
+        /// </summary>
+        public MessageDescriptor MessageType
+        {
+            get
+            {
+                if (fieldType != FieldType.Message)
+                {
+                    throw new InvalidOperationException("MessageType is only valid for enum fields.");
+                }
+                return messageType;
+            }
+        }
+
+        /// <summary>
+        /// Look up and cross-link all field types etc.
+        /// </summary>
+        internal void CrossLink()
+        {
+            if (Proto.TypeName != "")
+            {
+                IDescriptor typeDescriptor =
+                    File.DescriptorPool.LookupSymbol(Proto.TypeName, this);
+
+                if (Proto.Type != 0)
+                {
+                    // Choose field type based on symbol.
+                    if (typeDescriptor is MessageDescriptor)
+                    {
+                        fieldType = FieldType.Message;
+                    }
+                    else if (typeDescriptor is EnumDescriptor)
+                    {
+                        fieldType = FieldType.Enum;
+                    }
+                    else
+                    {
+                        throw new DescriptorValidationException(this, "\"" + Proto.TypeName + "\" is not a type.");
+                    }
+                }
+
+                if (fieldType == FieldType.Message)
+                {
+                    if (!(typeDescriptor is MessageDescriptor))
+                    {
+                        throw new DescriptorValidationException(this,
+                                                                "\"" + Proto.TypeName + "\" is not a message type.");
+                    }
+                    messageType = (MessageDescriptor) typeDescriptor;
+
+                    if (Proto.DefaultValue != "")
+                    {
+                        throw new DescriptorValidationException(this, "Messages can't have default values.");
+                    }
+                }
+                else if (fieldType == FieldType.Enum)
+                {
+                    if (!(typeDescriptor is EnumDescriptor))
+                    {
+                        throw new DescriptorValidationException(this, "\"" + Proto.TypeName + "\" is not an enum type.");
+                    }
+                    enumType = (EnumDescriptor) typeDescriptor;
+                }
+                else
+                {
+                    throw new DescriptorValidationException(this, "Field with primitive type has type_name.");
+                }
+            }
+            else
+            {
+                if (fieldType == FieldType.Message || fieldType == FieldType.Enum)
+                {
+                    throw new DescriptorValidationException(this, "Field with message or enum type missing type_name.");
+                }
+            }
+
+            // Note: no attempt to perform any default value parsing
+
+            File.DescriptorPool.AddFieldByNumber(this);
+
+            if (containingType != null && containingType.Proto.Options != null && containingType.Proto.Options.MessageSetWireFormat)
+            {
+                throw new DescriptorValidationException(this, "MessageSet format is not supported.");
+            }
+        }
+    }
+}
\ No newline at end of file
diff --git a/csharp/src/Google.Protobuf/Reflection/FieldType.cs b/csharp/src/Google.Protobuf/Reflection/FieldType.cs
new file mode 100644
index 00000000..41fa702d
--- /dev/null
+++ b/csharp/src/Google.Protobuf/Reflection/FieldType.cs
@@ -0,0 +1,60 @@
+#region Copyright notice and license
+// Protocol Buffers - Google's data interchange format
+// Copyright 2008 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.
+#endregion
+
+namespace Google.Protobuf.Reflection
+{
+    /// <summary>
+    /// Enumeration of all the possible field types. The odd formatting is to make it very clear
+    /// which attribute applies to which value, while maintaining a compact format.
+    /// </summary>
+    public enum FieldType
+    {
+        Double,
+        Float,
+        Int64,
+        UInt64,
+        Int32,
+        Fixed64,
+        Fixed32,
+        Bool,
+        String,
+        Group,
+        Message,
+        Bytes,
+        UInt32,
+        SFixed32,
+        SFixed64,
+        SInt32,
+        SInt64,
+        Enum
+    }
+}
\ No newline at end of file
diff --git a/csharp/src/Google.Protobuf/Reflection/FileDescriptor.cs b/csharp/src/Google.Protobuf/Reflection/FileDescriptor.cs
new file mode 100644
index 00000000..db393480
--- /dev/null
+++ b/csharp/src/Google.Protobuf/Reflection/FileDescriptor.cs
@@ -0,0 +1,352 @@
+#region Copyright notice and license
+// Protocol Buffers - Google's data interchange format
+// Copyright 2008 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.
+#endregion
+
+using System;
+using System.Collections.Generic;
+using System.Collections.ObjectModel;
+
+namespace Google.Protobuf.Reflection
+{
+    /// <summary>
+    /// Describes a .proto file, including everything defined within.
+    /// IDescriptor is implemented such that the File property returns this descriptor,
+    /// and the FullName is the same as the Name.
+    /// </summary>
+    public sealed class FileDescriptor : IDescriptor
+    {
+        private readonly FileDescriptorProto proto;
+        private readonly IList<MessageDescriptor> messageTypes;
+        private readonly IList<EnumDescriptor> enumTypes;
+        private readonly IList<ServiceDescriptor> services;
+        private readonly IList<FileDescriptor> dependencies;
+        private readonly IList<FileDescriptor> publicDependencies;
+        private readonly DescriptorPool pool;
+
+        public enum ProtoSyntax
+        {
+            Proto2,
+            Proto3
+        }
+
+        public ProtoSyntax Syntax
+        {
+            get { return proto.Syntax == "proto3" ? ProtoSyntax.Proto3 : ProtoSyntax.Proto2; }
+        }
+
+        private FileDescriptor(FileDescriptorProto proto, FileDescriptor[] dependencies, DescriptorPool pool, bool allowUnknownDependencies)
+        {
+            this.pool = pool;
+            this.proto = proto;
+            this.dependencies = new ReadOnlyCollection<FileDescriptor>((FileDescriptor[]) dependencies.Clone());
+
+            publicDependencies = DeterminePublicDependencies(this, proto, dependencies, allowUnknownDependencies);
+
+            pool.AddPackage(Package, this);
+
+            messageTypes = DescriptorUtil.ConvertAndMakeReadOnly(proto.MessageType,
+                                                                 (message, index) =>
+                                                                 new MessageDescriptor(message, this, null, index));
+
+            enumTypes = DescriptorUtil.ConvertAndMakeReadOnly(proto.EnumType,
+                                                              (enumType, index) =>
+                                                              new EnumDescriptor(enumType, this, null, index));
+
+            services = DescriptorUtil.ConvertAndMakeReadOnly(proto.Service,
+                                                             (service, index) =>
+                                                             new ServiceDescriptor(service, this, index));
+        }
+
+        /// <summary>
+        /// Computes the full name of a descriptor within this file, with an optional parent message.
+        /// </summary>
+        internal string ComputeFullName(MessageDescriptor parent, string name)
+        {
+            if (parent != null)
+            {
+                return parent.FullName + "." + name;
+            }
+            if (Package.Length > 0)
+            {
+                return Package + "." + name;
+            }
+            return name;
+        }
+
+        /// <summary>
+        /// Extracts public dependencies from direct dependencies. This is a static method despite its
+        /// first parameter, as the value we're in the middle of constructing is only used for exceptions.
+        /// </summary>
+        private static IList<FileDescriptor> DeterminePublicDependencies(FileDescriptor @this, FileDescriptorProto proto, FileDescriptor[] dependencies, bool allowUnknownDependencies)
+        {
+            var nameToFileMap = new Dictionary<string, FileDescriptor>();
+            foreach (var file in dependencies)
+            {
+                nameToFileMap[file.Name] = file;
+            }
+            var publicDependencies = new List<FileDescriptor>();
+            for (int i = 0; i < proto.PublicDependency.Count; i++)
+            {
+                int index = proto.PublicDependency[i];
+                if (index < 0 || index >= proto.Dependency.Count)
+                {
+                    throw new DescriptorValidationException(@this, "Invalid public dependency index.");
+                }
+                string name = proto.Dependency[index];
+                FileDescriptor file = nameToFileMap[name];
+                if (file == null)
+                {
+                    if (!allowUnknownDependencies)
+                    {
+                        throw new DescriptorValidationException(@this, "Invalid public dependency: " + name);
+                    }
+                    // Ignore unknown dependencies.
+                }
+                else
+                {
+                    publicDependencies.Add(file);
+                }
+            }
+            return new ReadOnlyCollection<FileDescriptor>(publicDependencies);
+        }
+
+        /// <value>
+        /// The descriptor in its protocol message representation.
+        /// </value>
+        internal FileDescriptorProto Proto
+        {
+            get { return proto; }
+        }
+
+        /// <value>
+        /// The file name.
+        /// </value>
+        public string Name
+        {
+            get { return proto.Name; }
+        }
+
+        /// <summary>
+        /// The package as declared in the .proto file. This may or may not
+        /// be equivalent to the .NET namespace of the generated classes.
+        /// </summary>
+        public string Package
+        {
+            get { return proto.Package; }
+        }
+
+        /// <value>
+        /// Unmodifiable list of top-level message types declared in this file.
+        /// </value>
+        public IList<MessageDescriptor> MessageTypes
+        {
+            get { return messageTypes; }
+        }
+
+        /// <value>
+        /// Unmodifiable list of top-level enum types declared in this file.
+        /// </value>
+        public IList<EnumDescriptor> EnumTypes
+        {
+            get { return enumTypes; }
+        }
+
+        /// <value>
+        /// Unmodifiable list of top-level services declared in this file.
+        /// </value>
+        public IList<ServiceDescriptor> Services
+        {
+            get { return services; }
+        }
+
+        /// <value>
+        /// Unmodifiable list of this file's dependencies (imports).
+        /// </value>
+        public IList<FileDescriptor> Dependencies
+        {
+            get { return dependencies; }
+        }
+
+        /// <value>
+        /// Unmodifiable list of this file's public dependencies (public imports).
+        /// </value>
+        public IList<FileDescriptor> PublicDependencies
+        {
+            get { return publicDependencies; }
+        }
+
+        /// <value>
+        /// Implementation of IDescriptor.FullName - just returns the same as Name.
+        /// </value>
+        string IDescriptor.FullName
+        {
+            get { return Name; }
+        }
+
+        /// <value>
+        /// Implementation of IDescriptor.File - just returns this descriptor.
+        /// </value>
+        FileDescriptor IDescriptor.File
+        {
+            get { return this; }
+        }
+
+        /// <value>
+        /// Pool containing symbol descriptors.
+        /// </value>
+        internal DescriptorPool DescriptorPool
+        {
+            get { return pool; }
+        }
+
+        /// <summary>
+        /// Finds a type (message, enum, service or extension) in the file by name. Does not find nested types.
+        /// </summary>
+        /// <param name="name">The unqualified type name to look for.</param>
+        /// <typeparam name="T">The type of descriptor to look for (or ITypeDescriptor for any)</typeparam>
+        /// <returns>The type's descriptor, or null if not found.</returns>
+        public T FindTypeByName<T>(String name)
+            where T : class, IDescriptor
+        {
+            // Don't allow looking up nested types.  This will make optimization
+            // easier later.
+            if (name.IndexOf('.') != -1)
+            {
+                return null;
+            }
+            if (Package.Length > 0)
+            {
+                name = Package + "." + name;
+            }
+            T result = pool.FindSymbol<T>(name);
+            if (result != null && result.File == this)
+            {
+                return result;
+            }
+            return null;
+        }
+        
+        /// <summary>
+        /// Builds a FileDescriptor from its protocol buffer representation.
+        /// </summary>
+        /// <param name="proto">The protocol message form of the FileDescriptor.</param>
+        /// <param name="dependencies">FileDescriptors corresponding to all of the
+        /// file's dependencies, in the exact order listed in the .proto file. May be null,
+        /// in which case it is treated as an empty array.</param>
+        /// <param name="allowUnknownDependencies">Whether unknown dependencies are ignored (true) or cause an exception to be thrown (false).</param>
+        /// <exception cref="DescriptorValidationException">If <paramref name="proto"/> is not
+        /// a valid descriptor. This can occur for a number of reasons, such as a field
+        /// having an undefined type or because two messages were defined with the same name.</exception>
+        private static FileDescriptor BuildFrom(FileDescriptorProto proto, FileDescriptor[] dependencies, bool allowUnknownDependencies)
+        {
+            // Building descriptors involves two steps: translating and linking.
+            // In the translation step (implemented by FileDescriptor's
+            // constructor), we build an object tree mirroring the
+            // FileDescriptorProto's tree and put all of the descriptors into the
+            // DescriptorPool's lookup tables.  In the linking step, we look up all
+            // type references in the DescriptorPool, so that, for example, a
+            // FieldDescriptor for an embedded message contains a pointer directly
+            // to the Descriptor for that message's type.  We also detect undefined
+            // types in the linking step.
+            if (dependencies == null)
+            {
+                dependencies = new FileDescriptor[0];
+            }
+
+            DescriptorPool pool = new DescriptorPool(dependencies);
+            FileDescriptor result = new FileDescriptor(proto, dependencies, pool, allowUnknownDependencies);
+
+            // TODO(jonskeet): Reinstate these checks, or get rid of them entirely. They aren't in the Java code,
+            // and fail for the CustomOptions test right now. (We get "descriptor.proto" vs "google/protobuf/descriptor.proto".)
+            //if (dependencies.Length != proto.DependencyCount)
+            //{
+            //    throw new DescriptorValidationException(result,
+            //                                            "Dependencies passed to FileDescriptor.BuildFrom() don't match " +
+            //                                            "those listed in the FileDescriptorProto.");
+            //}
+            //for (int i = 0; i < proto.DependencyCount; i++)
+            //{
+            //    if (dependencies[i].Name != proto.DependencyList[i])
+            //    {
+            //        throw new DescriptorValidationException(result,
+            //                                                "Dependencies passed to FileDescriptor.BuildFrom() don't match " +
+            //                                                "those listed in the FileDescriptorProto.");
+            //    }
+            //}
+
+            result.CrossLink();
+            return result;
+        }
+
+        private void CrossLink()
+        {
+            foreach (MessageDescriptor message in messageTypes)
+            {
+                message.CrossLink();
+            }
+
+            foreach (ServiceDescriptor service in services)
+            {
+                service.CrossLink();
+            }
+        }
+
+        public static FileDescriptor InternalBuildGeneratedFileFrom(byte[] descriptorData,
+                                                                    FileDescriptor[] dependencies)
+        {
+            FileDescriptorProto proto;
+            try
+            {
+                proto = FileDescriptorProto.Parser.ParseFrom(descriptorData);
+            }
+            catch (InvalidProtocolBufferException e)
+            {
+                throw new ArgumentException("Failed to parse protocol buffer descriptor for generated code.", e);
+            }
+
+            try
+            {
+                // When building descriptors for generated code, we allow unknown
+                // dependencies by default.
+                return BuildFrom(proto, dependencies, true);
+            }
+            catch (DescriptorValidationException e)
+            {
+                throw new ArgumentException("Invalid embedded descriptor for \"" + proto.Name + "\".", e);
+            }
+        }
+        
+        public override string ToString()
+        {
+            return "FileDescriptor for " + proto.Name;
+        }
+    }
+}
\ No newline at end of file
diff --git a/csharp/src/Google.Protobuf/Reflection/IDescriptor.cs b/csharp/src/Google.Protobuf/Reflection/IDescriptor.cs
new file mode 100644
index 00000000..6506db1b
--- /dev/null
+++ b/csharp/src/Google.Protobuf/Reflection/IDescriptor.cs
@@ -0,0 +1,44 @@
+#region Copyright notice and license
+// Protocol Buffers - Google's data interchange format
+// Copyright 2008 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.
+#endregion
+
+namespace Google.Protobuf.Reflection
+{
+    /// <summary>
+    /// Interface implemented by all descriptor types.
+    /// </summary>
+    public interface IDescriptor
+    {
+        string Name { get; }
+        string FullName { get; }
+        FileDescriptor File { get; }
+    }    
+}
\ No newline at end of file
diff --git a/csharp/src/Google.Protobuf/Reflection/IFieldAccessor.cs b/csharp/src/Google.Protobuf/Reflection/IFieldAccessor.cs
new file mode 100644
index 00000000..3f4f05f4
--- /dev/null
+++ b/csharp/src/Google.Protobuf/Reflection/IFieldAccessor.cs
@@ -0,0 +1,70 @@
+#region Copyright notice and license
+// Protocol Buffers - Google's data interchange format
+// Copyright 2008 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.
+#endregion
+
+namespace Google.Protobuf.Reflection
+{
+    /// <summary>
+    /// Allows fields to be reflectively accessed.
+    /// </summary>
+    public interface IFieldAccessor
+    {
+        /// <summary>
+        /// Returns the descriptor associated with this field.
+        /// </summary>
+        FieldDescriptor Descriptor { get; }
+
+        // TODO: Should the argument type for these messages be IReflectedMessage?
+
+        /// <summary>
+        /// Clears the field in the specified message. (For repeated fields,
+        /// this clears the list.)
+        /// </summary>
+        void Clear(object message);
+
+        /// <summary>
+        /// Fetches the field value. For repeated values, this will be an
+        /// <see cref="IList"/> implementation. For map values, this will be an
+        /// <see cref="IDictionary"/> implementation.
+        /// </summary>
+        object GetValue(object message);
+
+        /// <summary>
+        /// Mutator for single "simple" fields only.
+        /// </summary>
+        /// <remarks>
+        /// Repeated fields are mutated by fetching the value and manipulating it as a list.
+        /// Map fields are mutated by fetching the value and manipulating it as a dictionary.
+        /// </remarks>
+        /// <exception cref="InvalidOperationException">The field is not a "simple" field, or the message is frozen.</exception>
+        void SetValue(object message, object value);
+    }
+}
\ No newline at end of file
diff --git a/csharp/src/Google.Protobuf/Reflection/MapFieldAccessor.cs b/csharp/src/Google.Protobuf/Reflection/MapFieldAccessor.cs
new file mode 100644
index 00000000..317fbd8d
--- /dev/null
+++ b/csharp/src/Google.Protobuf/Reflection/MapFieldAccessor.cs
@@ -0,0 +1,58 @@
+#region Copyright notice and license
+// Protocol Buffers - Google's data interchange format
+// Copyright 2015 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.
+#endregion
+
+using System;
+using System.Collections;
+
+namespace Google.Protobuf.Reflection
+{
+    /// <summary>
+    /// Accessor for map fields.
+    /// </summary>
+    internal sealed class MapFieldAccessor : FieldAccessorBase
+    {
+        internal MapFieldAccessor(Type type, string propertyName, FieldDescriptor descriptor) : base(type, propertyName, descriptor)
+        {
+        }
+
+        public override void Clear(object message)
+        {
+            IDictionary list = (IDictionary) GetValue(message);
+            list.Clear();
+        }
+
+        public override void SetValue(object message, object value)
+        {
+            throw new InvalidOperationException("SetValue is not implemented for map fields");
+        }
+    }
+}
diff --git a/csharp/src/Google.Protobuf/Reflection/MessageDescriptor.cs b/csharp/src/Google.Protobuf/Reflection/MessageDescriptor.cs
new file mode 100644
index 00000000..b6351d36
--- /dev/null
+++ b/csharp/src/Google.Protobuf/Reflection/MessageDescriptor.cs
@@ -0,0 +1,172 @@
+#region Copyright notice and license
+// Protocol Buffers - Google's data interchange format
+// Copyright 2008 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.
+#endregion
+
+using System;
+using System.Collections.Generic;
+
+namespace Google.Protobuf.Reflection
+{
+    /// <summary>
+    /// Describes a message type.
+    /// </summary>
+    public sealed class MessageDescriptor : DescriptorBase
+    {
+        private readonly DescriptorProto proto;
+        private readonly MessageDescriptor containingType;
+        private readonly IList<MessageDescriptor> nestedTypes;
+        private readonly IList<EnumDescriptor> enumTypes;
+        private readonly IList<FieldDescriptor> fields;
+        private readonly IList<OneofDescriptor> oneofs;
+        
+        internal MessageDescriptor(DescriptorProto proto, FileDescriptor file, MessageDescriptor parent, int typeIndex)
+            : base(file, file.ComputeFullName(parent, proto.Name), typeIndex)
+        {
+            this.proto = proto;
+            containingType = parent;
+
+            oneofs = DescriptorUtil.ConvertAndMakeReadOnly(proto.OneofDecl,
+                                                               (oneof, index) =>
+                                                               new OneofDescriptor(oneof, file, this, index));
+
+            nestedTypes = DescriptorUtil.ConvertAndMakeReadOnly(proto.NestedType,
+                                                                (type, index) =>
+                                                                new MessageDescriptor(type, file, this, index));
+
+            enumTypes = DescriptorUtil.ConvertAndMakeReadOnly(proto.EnumType,
+                                                              (type, index) =>
+                                                              new EnumDescriptor(type, file, this, index));
+
+            // TODO(jonskeet): Sort fields first?
+            fields = DescriptorUtil.ConvertAndMakeReadOnly(proto.Field,
+                                                           (field, index) =>
+                                                           new FieldDescriptor(field, file, this, index));
+            file.DescriptorPool.AddSymbol(this);
+        }
+
+        /// <summary>
+        /// The brief name of the descriptor's target.
+        /// </summary>
+        public override string Name { get { return proto.Name; } }
+
+        internal DescriptorProto Proto { get { return proto; } }
+
+        /// <value>
+        /// If this is a nested type, get the outer descriptor, otherwise null.
+        /// </value>
+        public MessageDescriptor ContainingType
+        {
+            get { return containingType; }
+        }
+
+        /// <value>
+        /// An unmodifiable list of this message type's fields.
+        /// </value>
+        public IList<FieldDescriptor> Fields
+        {
+            get { return fields; }
+        }
+
+        /// <value>
+        /// An unmodifiable list of this message type's nested types.
+        /// </value>
+        public IList<MessageDescriptor> NestedTypes
+        {
+            get { return nestedTypes; }
+        }
+
+        /// <value>
+        /// An unmodifiable list of this message type's enum types.
+        /// </value>
+        public IList<EnumDescriptor> EnumTypes
+        {
+            get { return enumTypes; }
+        }
+
+        public IList<OneofDescriptor> Oneofs
+        {
+            get { return oneofs; }
+        }
+
+        /// <summary>
+        /// Finds a field by field name.
+        /// </summary>
+        /// <param name="name">The unqualified name of the field (e.g. "foo").</param>
+        /// <returns>The field's descriptor, or null if not found.</returns>
+        public FieldDescriptor FindFieldByName(String name)
+        {
+            return File.DescriptorPool.FindSymbol<FieldDescriptor>(FullName + "." + name);
+        }
+
+        /// <summary>
+        /// Finds a field by field number.
+        /// </summary>
+        /// <param name="number">The field number within this message type.</param>
+        /// <returns>The field's descriptor, or null if not found.</returns>
+        public FieldDescriptor FindFieldByNumber(int number)
+        {
+            return File.DescriptorPool.FindFieldByNumber(this, number);
+        }
+
+        /// <summary>
+        /// Finds a nested descriptor by name. The is valid for fields, nested
+        /// message types, oneofs and enums.
+        /// </summary>
+        /// <param name="name">The unqualified name of the descriptor, e.g. "Foo"</param>
+        /// <returns>The descriptor, or null if not found.</returns>
+        public T FindDescriptor<T>(string name)
+            where T : class, IDescriptor
+        {
+            return File.DescriptorPool.FindSymbol<T>(FullName + "." + name);
+        }
+
+        /// <summary>
+        /// Looks up and cross-links all fields and nested types.
+        /// </summary>
+        internal void CrossLink()
+        {
+            foreach (MessageDescriptor message in nestedTypes)
+            {
+                message.CrossLink();
+            }
+
+            foreach (FieldDescriptor field in fields)
+            {
+                field.CrossLink();
+            }
+
+            foreach (OneofDescriptor oneof in oneofs)
+            {
+                oneof.CrossLink();
+            }
+        }        
+    }
+}
\ No newline at end of file
diff --git a/csharp/src/Google.Protobuf/Reflection/MethodDescriptor.cs b/csharp/src/Google.Protobuf/Reflection/MethodDescriptor.cs
new file mode 100644
index 00000000..0c9c6949
--- /dev/null
+++ b/csharp/src/Google.Protobuf/Reflection/MethodDescriptor.cs
@@ -0,0 +1,93 @@
+#region Copyright notice and license
+// Protocol Buffers - Google's data interchange format
+// Copyright 2008 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.
+#endregion
+
+namespace Google.Protobuf.Reflection
+{
+    /// <summary>
+    /// Describes a single method in a service.
+    /// </summary>
+    public sealed class MethodDescriptor : DescriptorBase
+    {
+        private readonly MethodDescriptorProto proto;
+        private readonly ServiceDescriptor service;
+        private MessageDescriptor inputType;
+        private MessageDescriptor outputType;
+
+        /// <value>
+        /// The service this method belongs to.
+        /// </value>
+        public ServiceDescriptor Service { get { return service; } }
+
+        /// <value>
+        /// The method's input type.
+        /// </value>
+        public MessageDescriptor InputType { get { return inputType; } }
+
+        /// <value>
+        /// The method's input type.
+        /// </value>
+        public MessageDescriptor OutputType { get { return outputType; } }
+
+        internal MethodDescriptor(MethodDescriptorProto proto, FileDescriptor file,
+                                  ServiceDescriptor parent, int index)
+            : base(file, parent.FullName + "." + proto.Name, index)
+        {
+            this.proto = proto;
+            service = parent;
+            file.DescriptorPool.AddSymbol(this);
+        }
+
+        internal MethodDescriptorProto Proto { get { return proto; } }
+
+        /// <summary>
+        /// The brief name of the descriptor's target.
+        /// </summary>
+        public override string Name { get { return proto.Name; } }
+
+        internal void CrossLink()
+        {
+            IDescriptor lookup = File.DescriptorPool.LookupSymbol(Proto.InputType, this);
+            if (!(lookup is MessageDescriptor))
+            {
+                throw new DescriptorValidationException(this, "\"" + Proto.InputType + "\" is not a message type.");
+            }
+            inputType = (MessageDescriptor) lookup;
+
+            lookup = File.DescriptorPool.LookupSymbol(Proto.OutputType, this);
+            if (!(lookup is MessageDescriptor))
+            {
+                throw new DescriptorValidationException(this, "\"" + Proto.OutputType + "\" is not a message type.");
+            }
+            outputType = (MessageDescriptor) lookup;
+        }
+    }
+}
\ No newline at end of file
diff --git a/csharp/src/Google.Protobuf/Reflection/OneofAccessor.cs b/csharp/src/Google.Protobuf/Reflection/OneofAccessor.cs
new file mode 100644
index 00000000..7a11d36b
--- /dev/null
+++ b/csharp/src/Google.Protobuf/Reflection/OneofAccessor.cs
@@ -0,0 +1,85 @@
+#region Copyright notice and license
+// Protocol Buffers - Google's data interchange format
+// Copyright 2015 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.
+#endregion
+
+using System;
+using System.Reflection;
+
+namespace Google.Protobuf.Reflection
+{
+    /// <summary>
+    /// Reflection access for a oneof, allowing clear and "get case" actions.
+    /// </summary>
+    public sealed class OneofAccessor
+    {
+        private readonly Func<object, int> caseDelegate;
+        private readonly Action<object> clearDelegate;
+        private OneofDescriptor descriptor;
+
+        internal OneofAccessor(Type type, string propertyName, OneofDescriptor descriptor) 
+        {
+            PropertyInfo property = type.GetProperty(propertyName + "Case");
+            if (property == null || !property.CanRead)
+            {
+                throw new ArgumentException("Not all required properties/methods available");
+            }
+            this.descriptor = descriptor;
+            caseDelegate = ReflectionUtil.CreateFuncObjectT<int>(property.GetGetMethod());
+
+            this.descriptor = descriptor;
+            MethodInfo clearMethod = type.GetMethod("Clear" + propertyName);
+            clearDelegate = ReflectionUtil.CreateActionObject(clearMethod);
+        }
+
+        public OneofDescriptor Descriptor { get { return descriptor; } }
+
+        /// <summary>
+        /// Clears the oneof in the specified message.
+        /// </summary>
+        public void Clear(object message)
+        {
+            clearDelegate(message);
+        }
+
+        /// <summary>
+        /// Indicates which field in the oneof is set for specified message
+        /// </summary>
+        public FieldDescriptor GetCaseFieldDescriptor(object message)
+        {
+            int fieldNumber = caseDelegate(message);
+            if (fieldNumber > 0)
+            {
+                return descriptor.ContainingType.FindFieldByNumber(fieldNumber);
+            }
+            return null;
+        }
+    }
+}
diff --git a/csharp/src/Google.Protobuf/Reflection/OneofDescriptor.cs b/csharp/src/Google.Protobuf/Reflection/OneofDescriptor.cs
new file mode 100644
index 00000000..e92dc8bb
--- /dev/null
+++ b/csharp/src/Google.Protobuf/Reflection/OneofDescriptor.cs
@@ -0,0 +1,78 @@
+#region Copyright notice and license
+// Protocol Buffers - Google's data interchange format
+// Copyright 2015 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.
+#endregion
+
+using System.Collections.Generic;
+using System.Collections.ObjectModel;
+
+namespace Google.Protobuf.Reflection
+{
+    public sealed class OneofDescriptor : DescriptorBase
+    {
+        private readonly OneofDescriptorProto proto;
+        private MessageDescriptor containingType;
+        private IList<FieldDescriptor> fields;
+
+        internal OneofDescriptor(OneofDescriptorProto proto, FileDescriptor file, MessageDescriptor parent, int index)
+            : base(file, file.ComputeFullName(parent, proto.Name), index)
+        {
+            this.proto = proto;
+            containingType = parent;
+
+            file.DescriptorPool.AddSymbol(this);
+        }
+
+        /// <summary>
+        /// The brief name of the descriptor's target.
+        /// </summary>
+        public override string Name { get { return proto.Name; } }
+
+        public MessageDescriptor ContainingType
+        {
+            get { return containingType; }
+        }
+
+        public IList<FieldDescriptor> Fields { get { return fields; } }
+
+        internal void CrossLink()
+        {
+            List<FieldDescriptor> fieldCollection = new List<FieldDescriptor>();
+            foreach (var field in ContainingType.Fields)
+            {
+                if (field.ContainingOneof == this)
+                {
+                    fieldCollection.Add(field);
+                }
+            }
+            fields = new ReadOnlyCollection<FieldDescriptor>(fieldCollection);
+        }
+    }
+}
diff --git a/csharp/src/Google.Protobuf/Reflection/PackageDescriptor.cs b/csharp/src/Google.Protobuf/Reflection/PackageDescriptor.cs
new file mode 100644
index 00000000..e547d834
--- /dev/null
+++ b/csharp/src/Google.Protobuf/Reflection/PackageDescriptor.cs
@@ -0,0 +1,68 @@
+#region Copyright notice and license
+// Protocol Buffers - Google's data interchange format
+// Copyright 2008 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.
+#endregion
+
+namespace Google.Protobuf.Reflection
+{
+    /// <summary>
+    /// Represents a package in the symbol table.  We use PackageDescriptors
+    /// just as placeholders so that someone cannot define, say, a message type
+    /// that has the same name as an existing package.
+    /// </summary>
+    internal sealed class PackageDescriptor : IDescriptor
+    {
+        private readonly string name;
+        private readonly string fullName;
+        private readonly FileDescriptor file;
+
+        internal PackageDescriptor(string name, string fullName, FileDescriptor file)
+        {
+            this.file = file;
+            this.fullName = fullName;
+            this.name = name;
+        }
+
+        public string Name
+        {
+            get { return name; }
+        }
+
+        public string FullName
+        {
+            get { return fullName; }
+        }
+
+        public FileDescriptor File
+        {
+            get { return file; }
+        }
+    }
+}
\ No newline at end of file
diff --git a/csharp/src/Google.Protobuf/Reflection/PartialClasses.cs b/csharp/src/Google.Protobuf/Reflection/PartialClasses.cs
new file mode 100644
index 00000000..c7ed4342
--- /dev/null
+++ b/csharp/src/Google.Protobuf/Reflection/PartialClasses.cs
@@ -0,0 +1,47 @@
+#region Copyright notice and license

+// Protocol Buffers - Google's data interchange format

+// Copyright 2008 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.

+#endregion

+

+// This file just contains partial classes for any autogenerated classes that need additional support.

+namespace Google.Protobuf.Reflection

+{

+    internal partial class FieldDescriptorProto

+    {

+        // We can't tell the difference between "explicitly set to 0" and "not set"

+        // in proto3, but we need to tell the difference for OneofIndex. descriptor.proto

+        // is really a proto2 file, but the runtime doesn't know about proto2 semantics...

+        // We fake it by defaulting to -1.

+        partial void OnConstruction()

+        {

+            OneofIndex = -1;

+        }

+    }

+}
\ No newline at end of file
diff --git a/csharp/src/Google.Protobuf/Reflection/ReflectionUtil.cs b/csharp/src/Google.Protobuf/Reflection/ReflectionUtil.cs
new file mode 100644
index 00000000..d0dc3e8b
--- /dev/null
+++ b/csharp/src/Google.Protobuf/Reflection/ReflectionUtil.cs
@@ -0,0 +1,106 @@
+#region Copyright notice and license
+// Protocol Buffers - Google's data interchange format
+// Copyright 2008 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.
+#endregion
+
+using System;
+using System.Linq.Expressions;
+using System.Reflection;
+
+namespace Google.Protobuf.Reflection
+{
+    /// <summary>
+    /// The methods in this class are somewhat evil, and should not be tampered with lightly.
+    /// Basically they allow the creation of relatively weakly typed delegates from MethodInfos
+    /// which are more strongly typed. They do this by creating an appropriate strongly typed
+    /// delegate from the MethodInfo, and then calling that within an anonymous method.
+    /// Mind-bending stuff (at least to your humble narrator) but the resulting delegates are
+    /// very fast compared with calling Invoke later on.
+    /// </summary>
+    internal static class ReflectionUtil
+    {
+        /// <summary>
+        /// Empty Type[] used when calling GetProperty to force property instead of indexer fetching.
+        /// </summary>
+        internal static readonly Type[] EmptyTypes = new Type[0];
+
+        /// <summary>
+        /// Creates a delegate which will cast the argument to the appropriate method target type,
+        /// call the method on it, then convert the result to object.
+        /// </summary>
+        internal static Func<object, object> CreateFuncObjectObject(MethodInfo method)
+        {
+            ParameterExpression parameter = Expression.Parameter(typeof(object), "p");
+            Expression downcast = Expression.Convert(parameter, method.DeclaringType);
+            Expression call = Expression.Call(downcast, method);
+            Expression upcast = Expression.Convert(call, typeof(object));
+            return Expression.Lambda<Func<object, object>>(upcast, parameter).Compile();
+        }
+
+        /// <summary>
+        /// Creates a delegate which will cast the argument to the appropriate method target type,
+        /// call the method on it, then convert the result to the specified type.
+        /// </summary>
+        internal static Func<object, T> CreateFuncObjectT<T>(MethodInfo method)
+        {
+            ParameterExpression parameter = Expression.Parameter(typeof(object), "p");
+            Expression downcast = Expression.Convert(parameter, method.DeclaringType);
+            Expression call = Expression.Call(downcast, method);
+            Expression upcast = Expression.Convert(call, typeof(T));
+            return Expression.Lambda<Func<object, T>>(upcast, parameter).Compile();
+        }
+
+        /// <summary>
+        /// Creates a delegate which will execute the given method after casting the first argument to
+        /// the target type of the method, and the second argument to the first parameter type of the method.
+        /// </summary>
+        internal static Action<object, object> CreateActionObjectObject(MethodInfo method)
+        {
+            ParameterExpression targetParameter = Expression.Parameter(typeof(object), "target");
+            ParameterExpression argParameter = Expression.Parameter(typeof(object), "arg");
+            Expression castTarget = Expression.Convert(targetParameter, method.DeclaringType);
+            Expression castArgument = Expression.Convert(argParameter, method.GetParameters()[0].ParameterType);
+            Expression call = Expression.Call(castTarget, method, castArgument);
+            return Expression.Lambda<Action<object, object>>(call, targetParameter, argParameter).Compile();
+        }
+
+        /// <summary>
+        /// Creates a delegate which will execute the given method after casting the first argument to
+        /// the target type of the method.
+        /// </summary>
+        internal static Action<object> CreateActionObject(MethodInfo method)
+        {
+            ParameterExpression targetParameter = Expression.Parameter(typeof(object), "target");
+            Expression castTarget = Expression.Convert(targetParameter, method.DeclaringType);
+            Expression call = Expression.Call(castTarget, method);
+            return Expression.Lambda<Action<object>>(call, targetParameter).Compile();
+        }
+    }
+}
\ No newline at end of file
diff --git a/csharp/src/Google.Protobuf/Reflection/RepeatedFieldAccessor.cs b/csharp/src/Google.Protobuf/Reflection/RepeatedFieldAccessor.cs
new file mode 100644
index 00000000..0ada7567
--- /dev/null
+++ b/csharp/src/Google.Protobuf/Reflection/RepeatedFieldAccessor.cs
@@ -0,0 +1,59 @@
+#region Copyright notice and license
+// Protocol Buffers - Google's data interchange format
+// Copyright 2015 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.
+#endregion
+
+using System;
+using System.Collections;
+
+namespace Google.Protobuf.Reflection
+{
+    /// <summary>
+    /// Accessor for repeated fields.
+    /// </summary>
+    internal sealed class RepeatedFieldAccessor : FieldAccessorBase
+    {
+        internal RepeatedFieldAccessor(Type type, string propertyName, FieldDescriptor descriptor) : base(type, propertyName, descriptor)
+        {
+        }
+
+        public override void Clear(object message)
+        {
+            IList list = (IList) GetValue(message);
+            list.Clear();
+        }
+
+        public override void SetValue(object message, object value)
+        {
+            throw new InvalidOperationException("SetValue is not implemented for repeated fields");
+        }
+
+    }
+}
diff --git a/csharp/src/Google.Protobuf/Reflection/ServiceDescriptor.cs b/csharp/src/Google.Protobuf/Reflection/ServiceDescriptor.cs
new file mode 100644
index 00000000..cc0a5010
--- /dev/null
+++ b/csharp/src/Google.Protobuf/Reflection/ServiceDescriptor.cs
@@ -0,0 +1,89 @@
+#region Copyright notice and license
+// Protocol Buffers - Google's data interchange format
+// Copyright 2008 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.
+#endregion
+
+using System;
+using System.Collections.Generic;
+
+namespace Google.Protobuf.Reflection
+{
+    /// <summary>
+    /// Describes a service type.
+    /// </summary>
+    public sealed class ServiceDescriptor : DescriptorBase
+    {
+        private readonly ServiceDescriptorProto proto;
+        private readonly IList<MethodDescriptor> methods;
+
+        internal ServiceDescriptor(ServiceDescriptorProto proto, FileDescriptor file, int index)
+            : base(file, file.ComputeFullName(null, proto.Name), index)
+        {
+            this.proto = proto;
+            methods = DescriptorUtil.ConvertAndMakeReadOnly(proto.Method,
+                                                            (method, i) => new MethodDescriptor(method, file, this, i));
+
+            file.DescriptorPool.AddSymbol(this);
+        }
+
+        /// <summary>
+        /// The brief name of the descriptor's target.
+        /// </summary>
+        public override string Name { get { return proto.Name; } }
+
+        internal ServiceDescriptorProto Proto { get { return proto; } }
+
+        /// <value>
+        /// An unmodifiable list of methods in this service.
+        /// </value>
+        public IList<MethodDescriptor> Methods
+        {
+            get { return methods; }
+        }
+
+        /// <summary>
+        /// Finds a method by name.
+        /// </summary>
+        /// <param name="name">The unqualified name of the method (e.g. "Foo").</param>
+        /// <returns>The method's decsriptor, or null if not found.</returns>
+        public MethodDescriptor FindMethodByName(String name)
+        {
+            return File.DescriptorPool.FindSymbol<MethodDescriptor>(FullName + "." + name);
+        }
+
+        internal void CrossLink()
+        {
+            foreach (MethodDescriptor method in methods)
+            {
+                method.CrossLink();
+            }
+        }
+    }
+}
\ No newline at end of file
diff --git a/csharp/src/Google.Protobuf/Reflection/SingleFieldAccessor.cs b/csharp/src/Google.Protobuf/Reflection/SingleFieldAccessor.cs
new file mode 100644
index 00000000..8c24e46e
--- /dev/null
+++ b/csharp/src/Google.Protobuf/Reflection/SingleFieldAccessor.cs
@@ -0,0 +1,85 @@
+#region Copyright notice and license
+// Protocol Buffers - Google's data interchange format
+// Copyright 2015 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.
+#endregion
+
+using System;
+using System.Reflection;
+
+namespace Google.Protobuf.Reflection
+{
+    /// <summary>
+    /// Accessor for single fields.
+    /// </summary>
+    internal sealed class SingleFieldAccessor : FieldAccessorBase
+    {
+        // All the work here is actually done in the constructor - it creates the appropriate delegates.
+        // There are various cases to consider, based on the property type (message, string/bytes, or "genuine" primitive)
+        // and proto2 vs proto3 for non-message types, as proto3 doesn't support "full" presence detection or default
+        // values.
+
+        private readonly Action<object, object> setValueDelegate;
+        private readonly Action<object> clearDelegate;
+
+        internal SingleFieldAccessor(Type type, string propertyName, FieldDescriptor descriptor) : base(type, propertyName, descriptor)
+        {
+            PropertyInfo property = type.GetProperty(propertyName);
+            // We know there *is* such a property, or the base class constructor would have thrown. We should be able to write
+            // to it though.
+            if (!property.CanWrite)
+            {
+                throw new ArgumentException("Not all required properties/methods available");
+            }
+            setValueDelegate = ReflectionUtil.CreateActionObjectObject(property.GetSetMethod());
+
+            var clrType = property.PropertyType;
+            
+            // TODO: What should clear on a oneof member do? Clear the oneof?
+
+            // TODO: Validate that this is a reasonable single field? (Should be a value type, a message type, or string/ByteString.)
+            object defaultValue =
+                typeof(IMessage).IsAssignableFrom(clrType) ? null
+                : clrType == typeof(string) ? ""
+                : clrType == typeof(ByteString) ? ByteString.Empty
+                : Activator.CreateInstance(clrType);
+            clearDelegate = message => SetValue(message, defaultValue);
+        }
+
+        public override void Clear(object message)
+        {
+            clearDelegate(message);
+        }
+
+        public override void SetValue(object message, object value)
+        {
+            setValueDelegate(message, value);
+        }
+    }
+}