52 lines
1.7 KiB
C#
52 lines
1.7 KiB
C#
using System;
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using System.Collections;
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using System.Collections.Generic;
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using System.Diagnostics;
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using System.Linq;
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using System.Text.Json.Serialization;
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using TaikoSoundEditor.Commons.IO;
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namespace TaikoSoundEditor.Collections
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{
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public static class Collections
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{
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public static Collection<T> FromJson<T>(string json, Type expectedItemType)
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{
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var colType = MakeGeneric(expectedItemType);
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Debug.WriteLine(json);
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var col = Json.Deserialize(colType, json);
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var items = colType.GetProperty("Items").GetValue(col) as IEnumerable;
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var result = new Collection<T>();
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foreach (var item in items)
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{
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if (item is T tItem) result.Items.Add(tItem);
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else throw new InvalidOperationException("Json parse error");
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}
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return result;
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}
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public static Type MakeGeneric(Type type) => typeof(Collection<>).MakeGenericType(type);
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public static object Instantiate(Type type) => Activator.CreateInstance(MakeGeneric(type));
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}
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public class Collection<T>
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{
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[JsonPropertyName("items")]
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public List<T> Items { get; set; } = new List<T>();
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public object Cast(Type type)
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{
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var col = Collections.Instantiate(type);
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var itemsProp = col.GetType().GetProperty("Items");
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var add = itemsProp.PropertyType.GetMethod("Add");
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var items = itemsProp.GetValue(col);
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foreach (var item in Items)
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add.Invoke(items, new object[] { Convert.ChangeType(item, type) });
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return col;
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}
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}
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}
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