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#region Copyright notice and license
// Copyright 2015-2016, Google Inc.
// All rights reserved.
//
// 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 Grpc.Core.Utils;
namespace Grpc.Core
{
/// <summary>
/// Encapsulates the logic for serializing and deserializing messages.
/// </summary>
public class Marshaller<T>
{
readonly Func<T, byte[]> serializer;
readonly Func<byte[], T> deserializer;
/// <summary>
/// Initializes a new marshaller.
/// </summary>
/// <param name="serializer">Function that will be used to serialize messages.</param>
/// <param name="deserializer">Function that will be used to deserialize messages.</param>
public Marshaller(Func<T, byte[]> serializer, Func<byte[], T> deserializer)
{
this.serializer = GrpcPreconditions.CheckNotNull(serializer, "serializer");
this.deserializer = GrpcPreconditions.CheckNotNull(deserializer, "deserializer");
}
/// <summary>
/// Gets the serializer function.
/// </summary>
public Func<T, byte[]> Serializer
{
get
{
return this.serializer;
}
}
/// <summary>
/// Gets the deserializer function.
/// </summary>
public Func<byte[], T> Deserializer
{
get
{
return this.deserializer;
}
}
}
/// <summary>
/// Utilities for creating marshallers.
/// </summary>
public static class Marshallers
{
/// <summary>
/// Creates a marshaller from specified serializer and deserializer.
/// </summary>
public static Marshaller<T> Create<T>(Func<T, byte[]> serializer, Func<byte[], T> deserializer)
{
return new Marshaller<T>(serializer, deserializer);
}
/// <summary>
/// Returns a marshaller for <c>string</c> type. This is useful for testing.
/// </summary>
public static Marshaller<string> StringMarshaller
{
get
{
return new Marshaller<string>(System.Text.Encoding.UTF8.GetBytes,
System.Text.Encoding.UTF8.GetString);
}
}
}
}
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