internal static void WriteDictionary <TProperty>(
JsonValueConverter <TProperty> converter,
JsonSerializerOptions options,
ref WriteStackFrame current,
Utf8JsonWriter writer)
{
if (converter == null)
{
return;
}
Debug.Assert(current.Enumerator != null);
string key;
TProperty value;
if (current.Enumerator is IEnumerator <KeyValuePair <string, TProperty> > enumerator)
{
// Avoid boxing for strongly-typed enumerators such as returned from IDictionary<string, TRuntimeProperty>
value = enumerator.Current.Value;
key = enumerator.Current.Key;
}
else
{
// Todo: support non-generic Dictionary here (IDictionaryEnumerator)
throw new NotSupportedException();
}
if (value == null)
{
writer.WriteNull(key);
}
else
{
#if true
// temporary behavior until the writer can accept escaped string.
byte[] utf8Key = Encoding.UTF8.GetBytes(key);
converter.Write(utf8Key, value, writer);
#else
byte[] pooledKey = null;
byte[] utf8Key = Encoding.UTF8.GetBytes(key);
int length = JsonWriterHelper.GetMaxEscapedLength(utf8Key.Length, 0);
Span <byte> escapedKey = length <= JsonConstants.StackallocThreshold ?
stackalloc byte[length] :
(pooledKey = ArrayPool <byte> .Shared.Rent(length));
JsonWriterHelper.EscapeString(utf8Key, escapedKey, 0, out int written);
converter.Write(escapedKey.Slice(0, written), value, writer);
if (pooledKey != null)
{
// We clear the array because it is "user data" (although a property name).
new Span <byte>(pooledKey, 0, written).Clear();
ArrayPool <byte> .Shared.Return(pooledKey);
}
#endif
}
}
internal static void WriteDictionary <TProperty>(
JsonValueConverter <TProperty> converter,
JsonSerializerOptions options,
ref WriteStackFrame current,
Utf8JsonWriter writer)
{
if (converter == null)
{
return;
}
Debug.Assert(current.Enumerator != null);
string key;
TProperty value;
if (current.Enumerator is IEnumerator <KeyValuePair <string, TProperty> > enumerator)
{
// Avoid boxing for strongly-typed enumerators such as returned from IDictionary<string, TRuntimeProperty>
value = enumerator.Current.Value;
key = enumerator.Current.Key;
}
else if (current.Enumerator is IEnumerator <KeyValuePair <string, object> > polymorphicEnumerator)
{
value = (TProperty)polymorphicEnumerator.Current.Value;
key = polymorphicEnumerator.Current.Key;
}
else if (current.IsImmutableDictionary || current.IsImmutableDictionaryProperty)
{
value = (TProperty)((DictionaryEntry)current.Enumerator.Current).Value;
key = (string)((DictionaryEntry)current.Enumerator.Current).Key;
}
else
{
// Todo: support non-generic Dictionary here (IDictionaryEnumerator)
throw new NotSupportedException();
}
if (value == null)
{
writer.WriteNull(key);
}
else
{
JsonEncodedText escapedKey = JsonEncodedText.Encode(key);
converter.Write(escapedKey, value, writer);
}
}