/// <summary>
/// Copies the options from a <see cref="JsonSerializerOptions"/> instance to a new instance.
/// </summary>
/// <param name="options">The <see cref="JsonSerializerOptions"/> instance to copy options from.</param>
/// <exception cref="System.ArgumentNullException">
/// <paramref name="options"/> is <see langword="null"/>.
/// </exception>
public JsonSerializerOptions(JsonSerializerOptions options)
{
if (options == null)
{
throw new ArgumentNullException(nameof(options));
}
_memberAccessorStrategy = options._memberAccessorStrategy;
_dictionaryKeyPolicy = options._dictionaryKeyPolicy;
_jsonPropertyNamingPolicy = options._jsonPropertyNamingPolicy;
_readCommentHandling = options._readCommentHandling;
_referenceHandler = options._referenceHandler;
_encoder = options._encoder;
_defaultIgnoreCondition = options._defaultIgnoreCondition;
_defaultBufferSize = options._defaultBufferSize;
_maxDepth = options._maxDepth;
_allowTrailingCommas = options._allowTrailingCommas;
_ignoreNullValues = options._ignoreNullValues;
_ignoreReadOnlyProperties = options._ignoreReadOnlyProperties;
_ignoreReadonlyFields = options._ignoreReadonlyFields;
_includeFields = options._includeFields;
_propertyNameCaseInsensitive = options._propertyNameCaseInsensitive;
_writeIndented = options._writeIndented;
Converters = new ConverterList(this, (ConverterList)options.Converters);
EffectiveMaxDepth = options.EffectiveMaxDepth;
// _classes is not copied as sharing the JsonClassInfo and JsonPropertyInfo caches can result in
// unnecessary references to type metadata, potentially hindering garbage collection on the source options.
// _haveTypesBeenCreated is not copied; it's okay to make changes to this options instance as (de)serialization has not occurred.
}
/// <summary>
/// Copies the options from a <see cref="JsonSerializerOptions"/> instance to a new instance.
/// </summary>
/// <param name="options">The <see cref="JsonSerializerOptions"/> instance to copy options from.</param>
/// <exception cref="System.ArgumentNullException">
/// <paramref name="options"/> is <see langword="null"/>.
/// </exception>
public JsonSerializerOptions(JsonSerializerOptions options)
{
if (options is null)
{
ThrowHelper.ThrowArgumentNullException(nameof(options));
}
_memberAccessorStrategy = options._memberAccessorStrategy;
_dictionaryKeyPolicy = options._dictionaryKeyPolicy;
_jsonPropertyNamingPolicy = options._jsonPropertyNamingPolicy;
_readCommentHandling = options._readCommentHandling;
_referenceHandler = options._referenceHandler;
_converters = new ConverterList(this, options._converters);
_encoder = options._encoder;
_defaultIgnoreCondition = options._defaultIgnoreCondition;
_numberHandling = options._numberHandling;
_unknownTypeHandling = options._unknownTypeHandling;
_defaultBufferSize = options._defaultBufferSize;
_maxDepth = options._maxDepth;
_allowTrailingCommas = options._allowTrailingCommas;
_ignoreNullValues = options._ignoreNullValues;
_ignoreReadOnlyProperties = options._ignoreReadOnlyProperties;
_ignoreReadonlyFields = options._ignoreReadonlyFields;
_includeFields = options._includeFields;
_propertyNameCaseInsensitive = options._propertyNameCaseInsensitive;
_writeIndented = options._writeIndented;
// Preserve backward compatibility with .NET 6
// This should almost certainly be changed, cf. https://github.com/dotnet/aspnetcore/issues/38720
_typeInfoResolver = options._typeInfoResolver is JsonSerializerContext ? null : options._typeInfoResolver;
EffectiveMaxDepth = options.EffectiveMaxDepth;
ReferenceHandlingStrategy = options.ReferenceHandlingStrategy;
// _cachingContext is not copied as sharing the JsonTypeInfo and JsonPropertyInfo caches can result in
// unnecessary references to type metadata, potentially hindering garbage collection on the source options.
TrackOptionsInstance(this);
}
