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using System.Collections;
using System.Text.Json.Nodes;
namespace VersOne.Epub.Test.Integration.JsonUtils.Serializers
{
internal class ListSerializer : TypeSerializer
{
private readonly Lazy<TypeSerializer> declaredListItemTypeSerializer;
public ListSerializer(Type listType, TypeSerializerCollection typeSerializerCollection)
{
Type declaredListItemType = listType.IsGenericType ? listType.GetGenericArguments().First() : throw new ArgumentException($"{listType.Name} is not a generic List<T> type.");
declaredListItemTypeSerializer = new Lazy<TypeSerializer>(() => typeSerializerCollection.GetSerializer(declaredListItemType));
}
public override JsonNode? Serialize(object? value, JsonSerializationContext jsonSerializationContext)
{
if (value is not IList list)
{
return null;
}
JsonArray array = new();
foreach (object? listItem in list)
{
if (listItem == null)
{
array.Add(null);
}
else
{
array.Add(declaredListItemTypeSerializer.Value.Serialize(listItem, jsonSerializationContext));
}
}
return array;
}
}
}
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