From e38294a62d7f37c0661273a9a26fda16d557423f Mon Sep 17 00:00:00 2001 From: Jon Skeet Date: Tue, 9 Jun 2015 19:30:44 +0100 Subject: First pass at the mutable API. Quite a bit more to do - in particular, it's pretty slow right now. --- csharp/src/ProtocolBuffers/ExtensionRegistry.cs | 215 ------------------------ 1 file changed, 215 deletions(-) delete mode 100644 csharp/src/ProtocolBuffers/ExtensionRegistry.cs (limited to 'csharp/src/ProtocolBuffers/ExtensionRegistry.cs') diff --git a/csharp/src/ProtocolBuffers/ExtensionRegistry.cs b/csharp/src/ProtocolBuffers/ExtensionRegistry.cs deleted file mode 100644 index 7c9467b5..00000000 --- a/csharp/src/ProtocolBuffers/ExtensionRegistry.cs +++ /dev/null @@ -1,215 +0,0 @@ -#region Copyright notice and license - -// Protocol Buffers - Google's data interchange format -// Copyright 2008 Google Inc. All rights reserved. -// http://github.com/jskeet/dotnet-protobufs/ -// Original C++/Java/Python code: -// http://code.google.com/p/protobuf/ -// -// 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 Google.ProtocolBuffers.Descriptors; - -namespace Google.ProtocolBuffers -{ - /// - /// A table of known extensions, searchable by name or field number. When - /// parsing a protocol message that might have extensions, you must provide - /// an in which you have registered any extensions - /// that you want to be able to parse. Otherwise, those extensions will just - /// be treated like unknown fields. - /// - /// - /// For example, if you had the .proto file: - /// - /// option java_class = "MyProto"; - /// - /// message Foo { - /// extensions 1000 to max; - /// } - /// - /// extend Foo { - /// optional int32 bar; - /// } - /// - /// - /// Then you might write code like: - /// - /// - /// ExtensionRegistry registry = ExtensionRegistry.CreateInstance(); - /// registry.Add(MyProto.Bar); - /// MyProto.Foo message = MyProto.Foo.ParseFrom(input, registry); - /// - /// - /// - /// - /// You might wonder why this is necessary. Two alternatives might come to - /// mind. First, you might imagine a system where generated extensions are - /// automatically registered when their containing classes are loaded. This - /// is a popular technique, but is bad design; among other things, it creates a - /// situation where behavior can change depending on what classes happen to be - /// loaded. It also introduces a security vulnerability, because an - /// unprivileged class could cause its code to be called unexpectedly from a - /// privileged class by registering itself as an extension of the right type. - /// - /// Another option you might consider is lazy parsing: do not parse an - /// extension until it is first requested, at which point the caller must - /// provide a type to use. This introduces a different set of problems. First, - /// it would require a mutex lock any time an extension was accessed, which - /// would be slow. Second, corrupt data would not be detected until first - /// access, at which point it would be much harder to deal with it. Third, it - /// could violate the expectation that message objects are immutable, since the - /// type provided could be any arbitrary message class. An unprivileged user - /// could take advantage of this to inject a mutable object into a message - /// belonging to privileged code and create mischief. - /// - public sealed partial class ExtensionRegistry - { - /// - /// Finds an extension by fully-qualified field name, in the - /// proto namespace, i.e. result.Descriptor.FullName will match - /// if a match is found. A null - /// reference is returned if the extension can't be found. - /// - [Obsolete("Please use the FindByName method instead.", true)] - public ExtensionInfo this[string fullName] - { - get - { - foreach (IGeneratedExtensionLite ext in extensionsByNumber.Values) - { - if (StringComparer.Ordinal.Equals(ext.Descriptor.FullName, fullName)) - { - return ext as ExtensionInfo; - } - } - return null; - } - } - -#if !LITE - /// - /// Finds an extension by containing type and field number. - /// A null reference is returned if the extension can't be found. - /// - public ExtensionInfo this[MessageDescriptor containingType, int fieldNumber] - { - get - { - IGeneratedExtensionLite ret; - extensionsByNumber.TryGetValue(new ExtensionIntPair(containingType, fieldNumber), out ret); - return ret as ExtensionInfo; - } - } - - public ExtensionInfo FindByName(MessageDescriptor containingType, string fieldName) - { - return FindExtensionByName(containingType, fieldName) as ExtensionInfo; - } -#endif - - /// - /// Add an extension from a generated file to the registry. - /// - public void Add(GeneratedExtensionBase extension) - { - if (extension.Descriptor.MappedType == MappedType.Message) - { - Add(new ExtensionInfo(extension.Descriptor, extension.MessageDefaultInstance)); - } - else - { - Add(new ExtensionInfo(extension.Descriptor, null)); - } - } - - /// - /// Adds a non-message-type extension to the registry by descriptor. - /// - /// - public void Add(FieldDescriptor type) - { - if (type.MappedType == MappedType.Message) - { - throw new ArgumentException("ExtensionRegistry.Add() must be provided a default instance " - + "when adding an embedded message extension."); - } - Add(new ExtensionInfo(type, null)); - } - - /// - /// Adds a message-type-extension to the registry by descriptor. - /// - /// - /// - public void Add(FieldDescriptor type, IMessage defaultInstance) - { - if (type.MappedType != MappedType.Message) - { - throw new ArgumentException("ExtensionRegistry.Add() provided a default instance for a " - + "non-message extension."); - } - Add(new ExtensionInfo(type, defaultInstance)); - } - - private void Add(ExtensionInfo extension) - { - if (readOnly) - { - throw new InvalidOperationException("Cannot add entries to a read-only extension registry"); - } - if (!extension.Descriptor.IsExtension) - { - throw new ArgumentException("ExtensionRegistry.add() was given a FieldDescriptor for a " - + "regular (non-extension) field."); - } - - IGeneratedExtensionLite liteExtension = extension; - Add(liteExtension); - - FieldDescriptor field = extension.Descriptor; - if (field.ContainingType.Options.MessageSetWireFormat - && field.FieldType == FieldType.Message - && field.IsOptional - && field.ExtensionScope == field.MessageType) - { - // This is an extension of a MessageSet type defined within the extension - // type's own scope. For backwards-compatibility, allow it to be looked - // up by type name. - Dictionary map; - if (extensionsByName.TryGetValue(liteExtension.ContainingType, out map)) - { - map[field.MessageType.FullName] = extension; - } - } - } - } -} \ No newline at end of file -- cgit v1.2.3