internal JsonConverter GetDictionaryKeyConverter(Type keyType)
{
_dictionaryKeyConverters ??= GetDictionaryKeyConverters();
if (!_dictionaryKeyConverters.TryGetValue(keyType, out JsonConverter? converter))
{
if (keyType.IsEnum)
{
converter = GetEnumConverter();
_dictionaryKeyConverters[keyType] = converter;
}
else
{
ThrowHelper.ThrowNotSupportedException_DictionaryKeyTypeNotSupported(keyType);
}
}
return(converter !);
// Use factory pattern to generate an EnumConverter with AllowStrings and AllowNumbers options for dictionary keys.
// There will be one converter created for each enum type.
JsonConverter GetEnumConverter()
=> EnumConverterFactory.Create(keyType, EnumConverterOptions.AllowStrings | EnumConverterOptions.AllowNumbers, this);
}
/// <inheritdoc /> public override JsonConverter CreateConverter(Type typeToConvert, JsonSerializerOptions options) => EnumConverterFactory.Create(typeToConvert, _converterOptions, _namingPolicy, options);
