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60 lines
1.7 KiB
60 lines
1.7 KiB
1 year ago
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#if !UNITY_METRO
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using MessagePack.Formatters;
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using MessagePack.Internal;
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using System;
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using System.Reflection;
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namespace MessagePack.Resolvers
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{
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public sealed class DynamicEnumAsStringResolver : IFormatterResolver
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{
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public static readonly IFormatterResolver Instance = new DynamicEnumAsStringResolver();
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DynamicEnumAsStringResolver()
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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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static class FormatterCache<T>
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{
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public static readonly IMessagePackFormatter<T> formatter;
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static FormatterCache()
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{
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var ti = typeof(T).GetTypeInfo();
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if (ti.IsNullable())
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{
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// build underlying type and use wrapped formatter.
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ti = ti.GenericTypeArguments[0].GetTypeInfo();
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if (!ti.IsEnum)
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{
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return;
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}
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var innerFormatter = DynamicEnumAsStringResolver.Instance.GetFormatterDynamic(ti.AsType());
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if (innerFormatter == null)
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{
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return;
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}
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formatter = (IMessagePackFormatter<T>)Activator.CreateInstance(typeof(StaticNullableFormatter<>).MakeGenericType(ti.AsType()), new object[] { innerFormatter });
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return;
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}
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else if (!ti.IsEnum)
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{
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return;
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}
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formatter = (IMessagePackFormatter<T>)(object)new EnumAsStringFormatter<T>();
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}
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}
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}
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}
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#endif
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