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Diffstat (limited to 'csharp/src/ProtocolBuffers/ExtensionRegistryLite.cs')
| -rw-r--r-- | csharp/src/ProtocolBuffers/ExtensionRegistryLite.cs | 232 |
1 files changed, 0 insertions, 232 deletions
diff --git a/csharp/src/ProtocolBuffers/ExtensionRegistryLite.cs b/csharp/src/ProtocolBuffers/ExtensionRegistryLite.cs deleted file mode 100644 index cc4a50bb..00000000 --- a/csharp/src/ProtocolBuffers/ExtensionRegistryLite.cs +++ /dev/null @@ -1,232 +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 ExtensionByNameMap = System.Collections.Generic.Dictionary<object, System.Collections.Generic.Dictionary<string, Google.ProtocolBuffers.IGeneratedExtensionLite>>;
-using ExtensionByIdMap = System.Collections.Generic.Dictionary<Google.ProtocolBuffers.ExtensionRegistry.ExtensionIntPair, Google.ProtocolBuffers.IGeneratedExtensionLite>;
-
-namespace Google.ProtocolBuffers
-{
- /// <summary>
- /// A table of known extensions, searchable by name or field number. When
- /// parsing a protocol message that might have extensions, you must provide
- /// an <see cref="ExtensionRegistry"/> 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.
- /// </summary>
- /// <example>
- /// For example, if you had the <c>.proto</c> file:
- /// <code>
- /// option java_class = "MyProto";
- ///
- /// message Foo {
- /// extensions 1000 to max;
- /// }
- ///
- /// extend Foo {
- /// optional int32 bar;
- /// }
- /// </code>
- ///
- /// Then you might write code like:
- ///
- /// <code>
- /// extensionRegistry registry = extensionRegistry.CreateInstance();
- /// registry.Add(MyProto.Bar);
- /// MyProto.Foo message = MyProto.Foo.ParseFrom(input, registry);
- /// </code>
- /// </example>
- ///
- /// <remarks>
- /// <para>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.
- /// </para>
- /// <para>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.</para>
- /// </remarks>
- public sealed partial class ExtensionRegistry
- {
- private static readonly ExtensionRegistry empty = new ExtensionRegistry(
- new ExtensionByNameMap(),
- new ExtensionByIdMap(new ExtensionIntPairEqualityComparer()),
- true);
-
- private readonly ExtensionByNameMap extensionsByName;
- private readonly ExtensionByIdMap extensionsByNumber;
-
- private readonly bool readOnly;
-
- private ExtensionRegistry(ExtensionByNameMap byName, ExtensionByIdMap byNumber, bool readOnly)
- {
- this.extensionsByName = byName;
- this.extensionsByNumber = byNumber;
- this.readOnly = readOnly;
- }
-
- /// <summary>
- /// Construct a new, empty instance.
- /// </summary>
- public static ExtensionRegistry CreateInstance()
- {
- return new ExtensionRegistry(new ExtensionByNameMap(), new ExtensionByIdMap(new ExtensionIntPairEqualityComparer()), false);
- }
-
- public ExtensionRegistry AsReadOnly()
- {
- return new ExtensionRegistry(extensionsByName, extensionsByNumber, true);
- }
-
- /// <summary>
- /// Get the unmodifiable singleton empty instance.
- /// </summary>
- public static ExtensionRegistry Empty
- {
- get { return empty; }
- }
-
- /// <summary>
- /// Finds an extension by containing type and field number.
- /// A null reference is returned if the extension can't be found.
- /// </summary>
- public IGeneratedExtensionLite this[IMessageLite containingType, int fieldNumber]
- {
- get
- {
- IGeneratedExtensionLite ret;
- extensionsByNumber.TryGetValue(new ExtensionIntPair(containingType, fieldNumber), out ret);
- return ret;
- }
- }
-
- public IGeneratedExtensionLite FindByName(IMessageLite defaultInstanceOfType, string fieldName)
- {
- return FindExtensionByName(defaultInstanceOfType, fieldName);
- }
-
- private IGeneratedExtensionLite FindExtensionByName(object forwhat, string fieldName)
- {
- IGeneratedExtensionLite extension = null;
- Dictionary<string, IGeneratedExtensionLite> map;
- if (extensionsByName.TryGetValue(forwhat, out map) && map.TryGetValue(fieldName, out extension))
- {
- return extension;
- }
- return null;
- }
-
- /// <summary>
- /// Add an extension from a generated file to the registry.
- /// </summary>
- public void Add(IGeneratedExtensionLite extension)
- {
- if (readOnly)
- {
- throw new InvalidOperationException("Cannot add entries to a read-only extension registry");
- }
- extensionsByNumber.Add(new ExtensionIntPair(extension.ContainingType, extension.Number), extension);
-
- Dictionary<string, IGeneratedExtensionLite> map;
- if (!extensionsByName.TryGetValue(extension.ContainingType, out map))
- {
- extensionsByName.Add(extension.ContainingType, map = new Dictionary<string, IGeneratedExtensionLite>());
- }
- map[extension.Descriptor.Name] = extension;
- map[extension.Descriptor.FullName] = extension;
- }
-
- /// <summary>
- /// Nested type just used to represent a pair of MessageDescriptor and int, as
- /// the key into the "by number" map.
- /// </summary>
- internal struct ExtensionIntPair : IEquatable<ExtensionIntPair>
- {
- private readonly object msgType;
- private readonly int number;
-
- internal ExtensionIntPair(object msgType, int number)
- {
- this.msgType = msgType;
- this.number = number;
- }
-
- public override int GetHashCode()
- {
- return msgType.GetHashCode()*((1 << 16) - 1) + number;
- }
-
- public override bool Equals(object obj)
- {
- if (!(obj is ExtensionIntPair))
- {
- return false;
- }
- return Equals((ExtensionIntPair) obj);
- }
-
- public bool Equals(ExtensionIntPair other)
- {
- return msgType.Equals(other.msgType) && number == other.number;
- }
- }
-
- internal class ExtensionIntPairEqualityComparer : IEqualityComparer<ExtensionIntPair>
- {
- public bool Equals(ExtensionIntPair x, ExtensionIntPair y)
- {
- return x.Equals(y);
- }
- public int GetHashCode(ExtensionIntPair obj)
- {
- return obj.GetHashCode();
- }
- }
- }
-}
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