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#region Copyright notice and license
// Copyright 2015 gRPC authors.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
#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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