private static bool HandleDictionary(
JsonClassInfo elementClassInfo,
JsonSerializerOptions options,
Utf8JsonWriter writer,
ref WriteStack state)
{
JsonPropertyInfo jsonPropertyInfo = state.Current.JsonPropertyInfo;
if (state.Current.Enumerator == null)
{
IEnumerable enumerable;
enumerable = (IEnumerable)jsonPropertyInfo.GetValueAsObject(state.Current.CurrentValue);
if (enumerable == null)
{
// Write a null object or enumerable.
state.Current.WriteObjectOrArrayStart(ClassType.Dictionary, writer, writeNull: true);
return(true);
}
state.Current.Enumerator = ((IDictionary)enumerable).GetEnumerator();
state.Current.WriteObjectOrArrayStart(ClassType.Dictionary, writer);
}
if (state.Current.Enumerator.MoveNext())
{
// Handle DataExtension.
if (ReferenceEquals(jsonPropertyInfo, state.Current.JsonClassInfo.DataExtensionProperty))
{
WriteExtensionData(writer, ref state.Current);
}
else
{
// Check for polymorphism.
if (elementClassInfo.ClassType == ClassType.Unknown)
{
object currentValue = ((IDictionaryEnumerator)state.Current.Enumerator).Entry.Value;
GetRuntimeClassInfo(currentValue, ref elementClassInfo, options);
}
if (elementClassInfo.ClassType == ClassType.Value)
{
elementClassInfo.GetPolicyProperty().WriteDictionary(ref state.Current, writer);
}
else if (state.Current.Enumerator.Current == null)
{
writer.WriteNull(jsonPropertyInfo.Name);
}
else
{
// An object or another enumerator requires a new stack frame.
var enumerator = (IDictionaryEnumerator)state.Current.Enumerator;
object value = enumerator.Value;
state.Push(elementClassInfo, value);
state.Current.KeyName = (string)enumerator.Key;
}
}
return(false);
}
// We are done enumerating.
writer.WriteEndObject();
if (state.Current.PopStackOnEnd)
{
state.Pop();
}
else
{
state.Current.EndDictionary();
}
return(true);
}
// Copy any settings defined at run-time to the new property.
internal void CopyRuntimeSettingsTo(JsonPropertyInfo other)
{
other._name = _name;
other._compareName = _compareName;
other._escapedName = _escapedName;
}
private static void HandleStartArray(
JsonSerializerOptions options,
ref Utf8JsonReader reader,
ref ReadStack state)
{
JsonPropertyInfo jsonPropertyInfo = state.Current.JsonPropertyInfo;
if (state.Current.SkipProperty)
{
// The array is not being applied to the object.
state.Push();
state.Current.Drain = true;
return;
}
if (jsonPropertyInfo == null)
{
jsonPropertyInfo = state.Current.JsonClassInfo.CreateRootObject(options);
}
else if (state.Current.JsonClassInfo.ClassType == ClassType.Unknown)
{
jsonPropertyInfo = state.Current.JsonClassInfo.CreatePolymorphicProperty(jsonPropertyInfo, typeof(object), options);
}
// Verify that we don't have a multidimensional array.
Type arrayType = jsonPropertyInfo.RuntimePropertyType;
if (!typeof(IEnumerable).IsAssignableFrom(arrayType) || (arrayType.IsArray && arrayType.GetArrayRank() > 1))
{
ThrowHelper.ThrowJsonException_DeserializeUnableToConvertValue(arrayType, reader, state.PropertyPath);
}
Debug.Assert(state.Current.IsProcessingEnumerableOrDictionary);
if (state.Current.PropertyInitialized)
{
// A nested json array so push a new stack frame.
Type elementType = state.Current.JsonClassInfo.ElementClassInfo.GetPolicyProperty().RuntimePropertyType;
state.Push();
state.Current.Initialize(elementType, options);
}
else
{
state.Current.PropertyInitialized = true;
}
jsonPropertyInfo = state.Current.JsonPropertyInfo;
// If current property is already set (from a constructor, for example) leave as-is.
if (jsonPropertyInfo.GetValueAsObject(state.Current.ReturnValue) == null)
{
// Create the enumerable.
object value = ReadStackFrame.CreateEnumerableValue(ref reader, ref state, options);
if (value != null)
{
if (state.Current.ReturnValue != null)
{
state.Current.JsonPropertyInfo.SetValueAsObject(state.Current.ReturnValue, value);
}
else
{
// Primitive arrays being returned without object
state.Current.SetReturnValue(value);
}
}
}
}
private static bool TryIsPropertyRefEqual(ref PropertyRef propertyRef, ReadOnlySpan <byte> propertyName, ulong key, ref JsonPropertyInfo info)
{
if (key == propertyRef.Key)
{
if (propertyName.Length <= PropertyNameKeyLength ||
// We compare the whole name, although we could skip the first 6 bytes (but it's likely not any faster)
propertyName.SequenceEqual(propertyRef.Info.NameUsedToCompare))
{
info = propertyRef.Info;
return(true);
}
}
return(false);
}
internal JsonPropertyInfo GetProperty(JsonSerializerOptions options, ReadOnlySpan <byte> propertyName, ref ReadStackFrame frame)
{
// If we should compare with case-insensitive, normalize to an uppercase format since that is what is cached on the propertyInfo.
if (options.PropertyNameCaseInsensitive)
{
string utf16PropertyName = Encoding.UTF8.GetString(propertyName.ToArray());
string upper = utf16PropertyName.ToUpperInvariant();
propertyName = Encoding.UTF8.GetBytes(upper);
}
ulong key = GetKey(propertyName);
JsonPropertyInfo info = null;
// First try sorted lookup.
int propertyIndex = frame.PropertyIndex;
// If we're not trying to build the cache locally, and there is an existing cache, then use it.
bool hasPropertyCache = frame.PropertyRefCache == null && _propertyRefsSorted != null;
if (hasPropertyCache)
{
// This .Length is consistent no matter what json data intialized _propertyRefsSorted.
int count = _propertyRefsSorted.Length;
if (count != 0)
{
int iForward = propertyIndex;
int iBackward = propertyIndex - 1;
while (iForward < count || iBackward >= 0)
{
if (iForward < count)
{
if (TryIsPropertyRefEqual(ref _propertyRefsSorted[iForward], propertyName, key, ref info))
{
return(info);
}
++iForward;
}
if (iBackward >= 0)
{
if (TryIsPropertyRefEqual(ref _propertyRefsSorted[iBackward], propertyName, key, ref info))
{
return(info);
}
--iBackward;
}
}
}
}
// Try the main list which has all of the properties in a consistent order.
// We could get here even when hasPropertyCache==true if there is a race condition with different json
// property ordering and _propertyRefsSorted is re-assigned while in the loop above.
for (int i = 0; i < _propertyRefs.Count; i++)
{
PropertyRef propertyRef = _propertyRefs[i];
if (TryIsPropertyRefEqual(ref propertyRef, propertyName, key, ref info))
{
break;
}
}
if (!hasPropertyCache)
{
if (propertyIndex == 0)
{
// Create the temporary list on first property access to prevent a partially filled List.
Debug.Assert(frame.PropertyRefCache == null);
frame.PropertyRefCache = new List <PropertyRef>();
}
if (info != null)
{
Debug.Assert(frame.PropertyRefCache != null);
frame.PropertyRefCache.Add(new PropertyRef(key, info));
}
}
return(info);
}
// Copy any settings defined at run-time to the new property.
public void CopyRuntimeSettingsTo(JsonPropertyInfo other)
{
other._name = _name;
other._nameUsedToCompare = _nameUsedToCompare;
other._escapedName = _escapedName;
}
private static bool HandleDictionary(
JsonClassInfo elementClassInfo,
JsonSerializerOptions options,
Utf8JsonWriter writer,
ref WriteStack state)
{
JsonPropertyInfo jsonPropertyInfo = state.Current.JsonPropertyInfo;
if (!jsonPropertyInfo.ShouldSerialize)
{
// Ignore writing this property.
return(true);
}
if (state.Current.Enumerator == null)
{
// Verify that the Dictionary can be serialized by having <string> as first generic argument.
Type[] args = jsonPropertyInfo.RuntimePropertyType.GetGenericArguments();
if (args.Length == 0 || args[0].UnderlyingSystemType != typeof(string))
{
ThrowHelper.ThrowJsonException_DeserializeUnableToConvertValue(state.Current.JsonClassInfo.Type, state.PropertyPath);
}
IEnumerable enumerable = (IEnumerable)jsonPropertyInfo.GetValueAsObject(state.Current.CurrentValue);
if (enumerable == null)
{
// Write a null object or enumerable.
state.Current.WriteObjectOrArrayStart(ClassType.Dictionary, writer, writeNull: true);
return(true);
}
state.Current.Enumerator = enumerable.GetEnumerator();
state.Current.WriteObjectOrArrayStart(ClassType.Dictionary, writer);
}
if (state.Current.Enumerator.MoveNext())
{
// Check for polymorphism.
if (elementClassInfo.ClassType == ClassType.Unknown)
{
object currentValue = ((IDictionaryEnumerator)state.Current.Enumerator).Entry;
GetRuntimeClassInfo(currentValue, ref elementClassInfo, options);
}
if (elementClassInfo.ClassType == ClassType.Value)
{
elementClassInfo.GetPolicyProperty().WriteDictionary(options, ref state.Current, writer);
}
else if (state.Current.Enumerator.Current == null)
{
writer.WriteNull(jsonPropertyInfo.Name);
}
else
{
// An object or another enumerator requires a new stack frame.
var enumerator = (IDictionaryEnumerator)state.Current.Enumerator;
object value = enumerator.Value;
state.Push(elementClassInfo, value);
state.Current.KeyName = (string)enumerator.Key;
}
return(false);
}
// We are done enumerating.
writer.WriteEndObject();
if (state.Current.PopStackOnEnd)
{
state.Pop();
}
else
{
state.Current.EndDictionary();
}
return(true);
}
