JsonSerializerContext.cs

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using System.ComponentModel;
using System.Text.Json.Serialization.Metadata;
 
namespace System.Text.Json.Serialization;
 
[EditorBrowsable(EditorBrowsableState.Never)]
public abstract class JsonSerializerContext
{
    private bool? _canUseSerializationLogic;
 
    internal JsonSerializerOptions _options;
 
    public JsonSerializerOptions Options
    {
        get
        {
            if (_options == null)
            {
                _options = new JsonSerializerOptions();
                _options._context = this;
            }
            return _options;
        }
    }
 
    internal bool CanUseSerializationLogic
    {
        get
        {
            if (!_canUseSerializationLogic.HasValue)
            {
                if (GeneratedSerializerOptions == null)
                {
                    _canUseSerializationLogic = false;
                }
                else
                {
                    _canUseSerializationLogic = Options.Converters.Count == 0 && Options.Encoder == null && (Options.NumberHandling & (JsonNumberHandling.WriteAsString | JsonNumberHandling.AllowNamedFloatingPointLiterals)) == 0 && Options.ReferenceHandlingStrategy == ReferenceHandlingStrategy.None && !Options.IgnoreNullValues && Options.DefaultIgnoreCondition == GeneratedSerializerOptions.DefaultIgnoreCondition && Options.IgnoreReadOnlyFields == GeneratedSerializerOptions.IgnoreReadOnlyFields && Options.IgnoreReadOnlyProperties == GeneratedSerializerOptions.IgnoreReadOnlyProperties && Options.IncludeFields == GeneratedSerializerOptions.IncludeFields && Options.PropertyNamingPolicy == GeneratedSerializerOptions.PropertyNamingPolicy && Options.DictionaryKeyPolicy == GeneratedSerializerOptions.DictionaryKeyPolicy && Options.WriteIndented == GeneratedSerializerOptions.WriteIndented;
                }
            }
            return _canUseSerializationLogic.Value;
        }
    }
 
    protected abstract JsonSerializerOptions? GeneratedSerializerOptions { get; }
 
    protected JsonSerializerContext(JsonSerializerOptions? options)
    {
        if (options != null)
        {
            if (options._context != null)
            {
                ThrowHelper.ThrowInvalidOperationException_JsonSerializerOptionsAlreadyBoundToContext();
            }
            _options = options;
            options._context = this;
        }
    }
 
    public abstract JsonTypeInfo? GetTypeInfo(Type type);
}