Second commit

Assets/Tremble/FieldConverters/TrembleFieldConverterCollection.cs

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+//
+// This file is part of the Tremble package by Tiny Goose.
+// Copyright (c) 2024-2026 TinyGoose Ltd., All Rights Reserved.
+//
+
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Reflection;
+
+namespace TinyGoose.Tremble
+{
+	public class TrembleFieldConverterCollection
+	{
+		private readonly List<TrembleFieldConverter> m_Converters = new();
+		private static readonly Dictionary<Type, TrembleFieldConverter> s_LookupCache = new();
+		private static readonly Dictionary<TrembleFieldConverter, TrembleFieldConverterAttribute> s_ConverterSetupCache = new();
+
+		public TrembleFieldConverterCollection()
+		{
+			m_Converters.AddRange(TypeDatabase
+				.GetTypesWithAttribute<TrembleFieldConverterAttribute>()
+				.Select(t => (TrembleFieldConverter)Activator.CreateInstance(t)));
+		}
+
+		public TrembleFieldConverter GetConverterForType(Type t)
+		{
+			// Array special case - expose as element type of array
+			if (t.IsArray)
+			{
+				t = t.GetElementType();
+			}
+
+			// Enum special case!
+			if (t.IsEnum)
+			{
+				return new EnumFieldConverter();
+			}
+
+			// First see if we've seen this type before
+			if (s_LookupCache.TryGetValue(t, out TrembleFieldConverter existingConverter))
+			{
+				return existingConverter;
+			}
+
+			// Exact match first
+			foreach (TrembleFieldConverter converter in m_Converters)
+			{
+				if (!s_ConverterSetupCache.TryGetValue(converter, out TrembleFieldConverterAttribute tfca))
+				{
+					tfca = converter.GetType().GetCustomAttribute<TrembleFieldConverterAttribute>();
+					s_ConverterSetupCache.Add(converter, tfca);
+				}
+
+				if (tfca.Type != t)
+					continue;
+
+				s_LookupCache[t] = converter;
+				return converter;
+			}
+
+			// Nothing exactly matches - look for subclasses too (for Components)
+			foreach (TrembleFieldConverter converter in m_Converters)
+			{
+				if (!s_ConverterSetupCache.TryGetValue(converter, out TrembleFieldConverterAttribute tfca))
+				{
+					tfca = converter.GetType().GetCustomAttribute<TrembleFieldConverterAttribute>();
+					s_ConverterSetupCache.Add(converter, tfca);
+				}
+
+				if (!t.IsSubclassOf(tfca.Type))
+					continue;
+
+				s_LookupCache[t] = converter;
+				return converter;
+			}
+
+			return null;
+		}
+	}
+}