75 lines
2.3 KiB
C#
75 lines
2.3 KiB
C#
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// Copyright (c) All contributors. All rights reserved.
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// Licensed under the MIT license. See LICENSE file in the project root for full license information.
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using System;
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using System.Collections.Generic;
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using System.Reflection;
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using MessagePack.Formatters;
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using UniRx;
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namespace MessagePack.ReactivePropertyExtension
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{
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public class ReactivePropertyResolver : IFormatterResolver
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{
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public static readonly ReactivePropertyResolver Instance = new ReactivePropertyResolver();
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private ReactivePropertyResolver()
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{
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}
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public IMessagePackFormatter<T> GetFormatter<T>()
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{
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return FormatterCache<T>.Formatter;
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}
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private static class FormatterCache<T>
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{
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internal static readonly IMessagePackFormatter<T> Formatter;
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static FormatterCache()
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{
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Formatter = (IMessagePackFormatter<T>)ReactivePropertyResolverGetFormatterHelper.GetFormatter(typeof(T));
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}
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}
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}
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internal static class ReactivePropertyResolverGetFormatterHelper
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{
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private static readonly Dictionary<Type, Type> FormatterMap = new Dictionary<Type, Type>()
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{
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{ typeof(ReactiveProperty<>), typeof(ReactivePropertyFormatter<>) },
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{ typeof(ReactiveCollection<>), typeof(ReactiveCollectionFormatter<>) },
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};
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internal static object GetFormatter(Type t)
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{
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if (t == typeof(Unit))
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{
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return UnitFormatter.Instance;
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}
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else if (t == typeof(Unit?))
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{
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return NullableUnitFormatter.Instance;
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}
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TypeInfo ti = t.GetTypeInfo();
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if (ti.IsGenericType)
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{
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Type genericType = ti.GetGenericTypeDefinition();
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Type formatterType;
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if (FormatterMap.TryGetValue(genericType, out formatterType))
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{
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return CreateInstance(formatterType, ti.GenericTypeArguments);
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}
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}
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return null;
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}
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private static object CreateInstance(Type genericType, Type[] genericTypeArguments, params object[] arguments)
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{
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return Activator.CreateInstance(genericType.MakeGenericType(genericTypeArguments), arguments);
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}
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}
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}
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