DefaultImmutableDictionaryConverter
using System.Collections;
namespace System.Text.Json.Serialization.Converters
{
internal sealed class DefaultImmutableDictionaryConverter : JsonDictionaryConverter
{
public static void RegisterImmutableDictionary(Type immutableCollectionType, Type elementType, JsonSerializerOptions options)
{
Type underlyingType;
string constructingTypeName;
string delegateKey = DefaultImmutableEnumerableConverter.GetDelegateKey(immutableCollectionType, elementType, out underlyingType, out constructingTypeName);
if (!options.CreateRangeDelegatesContainsKey(delegateKey)) {
Type type = underlyingType.Assembly.GetType(constructingTypeName);
ImmutableCollectionCreator createRangeDelegate = options.MemberAccessorStrategy.ImmutableDictionaryCreateRange(type, immutableCollectionType, elementType);
options.TryAddCreateRangeDelegate(delegateKey, createRangeDelegate);
}
}
public static bool IsImmutableDictionary(Type type)
{
if (type.IsGenericType) {
switch (type.GetGenericTypeDefinition().FullName) {
case "System.Collections.Immutable.ImmutableDictionary`2":
case "System.Collections.Immutable.IImmutableDictionary`2":
case "System.Collections.Immutable.ImmutableSortedDictionary`2":
return true;
default:
return false;
}
}
return false;
}
public override object CreateFromDictionary(ref ReadStack state, IDictionary sourceDictionary, JsonSerializerOptions options)
{
Type runtimePropertyType = state.Current.JsonPropertyInfo.RuntimePropertyType;
Type elementType = state.Current.GetElementType();
Type underlyingType;
string constructingTypeName;
string delegateKey = DefaultImmutableEnumerableConverter.GetDelegateKey(runtimePropertyType, elementType, out underlyingType, out constructingTypeName);
JsonPropertyInfo jsonPropertyInfoFromClassInfo = options.GetJsonPropertyInfoFromClassInfo(elementType, options);
return jsonPropertyInfoFromClassInfo.CreateImmutableDictionaryInstance(runtimePropertyType, delegateKey, sourceDictionary, state.JsonPath, options);
}
}
}