using System.Runtime.CompilerServices; using System.Text.Json.Serialization.Metadata; namespace System.Text.Json.Serialization { public abstract class JsonSerializerContext : IJsonTypeInfoResolver, IBuiltInJsonTypeInfoResolver { private JsonSerializerOptions _options; [System.Runtime.CompilerServices.Nullable(1)] public JsonSerializerOptions Options { [System.Runtime.CompilerServices.NullableContext(1)] get { JsonSerializerOptions jsonSerializerOptions = _options; if (jsonSerializerOptions == null) { jsonSerializerOptions = new JsonSerializerOptions { TypeInfoResolver = this }; jsonSerializerOptions.MakeReadOnly(); _options = jsonSerializerOptions; } return jsonSerializerOptions; } } [System.Runtime.CompilerServices.Nullable(2)] protected abstract JsonSerializerOptions GeneratedSerializerOptions { [System.Runtime.CompilerServices.NullableContext(2)] get; } internal void AssociateWithOptions(JsonSerializerOptions options) { options.TypeInfoResolver = this; options.MakeReadOnly(); _options = options; } bool IBuiltInJsonTypeInfoResolver.IsCompatibleWithOptions(JsonSerializerOptions options) { JsonSerializerOptions generatedSerializerOptions = GeneratedSerializerOptions; if (generatedSerializerOptions != null && options.Converters.Count == 0 && options.Encoder == null && !JsonHelpers.RequiresSpecialNumberHandlingOnWrite(options.NumberHandling) && 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) return options.DictionaryKeyPolicy == null; return false; } [System.Runtime.CompilerServices.NullableContext(2)] protected JsonSerializerContext(JsonSerializerOptions options) { if (options != null) { options.VerifyMutable(); AssociateWithOptions(options); } } [System.Runtime.CompilerServices.NullableContext(1)] [return: System.Runtime.CompilerServices.Nullable(2)] public abstract JsonTypeInfo GetTypeInfo(Type type); JsonTypeInfo IJsonTypeInfoResolver.GetTypeInfo(Type type, JsonSerializerOptions options) { if (options != null && options != _options) ThrowHelper.ThrowInvalidOperationException_ResolverTypeInfoOptionsNotCompatible(); return GetTypeInfo(type); } } }