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Diffstat (limited to 'third_party/protobuf/3.4.0/csharp/src/Google.Protobuf/Reflection/ReflectionUtil.cs')
| -rw-r--r-- | third_party/protobuf/3.4.0/csharp/src/Google.Protobuf/Reflection/ReflectionUtil.cs | 107 |
1 files changed, 0 insertions, 107 deletions
diff --git a/third_party/protobuf/3.4.0/csharp/src/Google.Protobuf/Reflection/ReflectionUtil.cs b/third_party/protobuf/3.4.0/csharp/src/Google.Protobuf/Reflection/ReflectionUtil.cs deleted file mode 100644 index df820ca36b..0000000000 --- a/third_party/protobuf/3.4.0/csharp/src/Google.Protobuf/Reflection/ReflectionUtil.cs +++ /dev/null @@ -1,107 +0,0 @@ -#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.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<IMessage, object> CreateFuncIMessageObject(MethodInfo method) - { - ParameterExpression parameter = Expression.Parameter(typeof(IMessage), "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<IMessage, 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<IMessage, T> CreateFuncIMessageT<T>(MethodInfo method) - { - ParameterExpression parameter = Expression.Parameter(typeof(IMessage), "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<IMessage, 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<IMessage, object> CreateActionIMessageObject(MethodInfo method) - { - ParameterExpression targetParameter = Expression.Parameter(typeof(IMessage), "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<IMessage, 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<IMessage> CreateActionIMessage(MethodInfo method) - { - ParameterExpression targetParameter = Expression.Parameter(typeof(IMessage), "target"); - Expression castTarget = Expression.Convert(targetParameter, method.DeclaringType); - Expression call = Expression.Call(castTarget, method); - return Expression.Lambda<Action<IMessage>>(call, targetParameter).Compile(); - } - } -}
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