private static bool WriteObject(
JsonSerializerOptions options,
Utf8JsonWriter writer,
ref WriteStack state)
{
// Write the start.
if (!state.Current.StartObjectWritten)
{
state.Current.WriteObjectOrArrayStart(ClassType.Object, writer);
}
// Determine if we are done enumerating properties.
// If the ClassType is unknown, there will be a policy property applied. There is probably
// a better way to identify policy properties- maybe not put them in the normal property bag?
JsonClassInfo classInfo = state.Current.JsonClassInfo;
if (classInfo.ClassType != ClassType.Unknown && state.Current.PropertyIndex != classInfo.PropertyCount)
{
HandleObject(options, writer, ref state);
return(false);
}
writer.WriteEndObject();
if (state.Current.PopStackOnEndObject)
{
state.Pop();
}
else
{
state.Current.EndObject();
}
return(true);
}
private static bool WriteEndObject(ref WriteStack state)
{
if (state.Current.PopStackOnEndObject)
{
state.Pop();
}
return(true);
}
private static bool WriteObject(
JsonSerializerOptions options,
Utf8JsonWriter writer,
ref WriteStack state)
{
// Write the start.
if (!state.Current.StartObjectWritten)
{
state.Current.WriteObjectOrArrayStart(ClassType.Object, writer);
state.Current.PropertyEnumerator = state.Current.JsonClassInfo.PropertyCache.GetEnumerator();
state.Current.PropertyEnumeratorActive = true;
state.Current.NextProperty();
}
else if (state.Current.MoveToNextProperty)
{
state.Current.NextProperty();
}
// Determine if we are done enumerating properties.
// If the ClassType is unknown, there will be a policy property applied
JsonClassInfo classInfo = state.Current.JsonClassInfo;
if (classInfo.ClassType != ClassType.Unknown && state.Current.PropertyEnumeratorActive)
{
var kvp = (KeyValuePair <string, JsonPropertyInfo>)state.Current.PropertyEnumerator.Current;
JsonPropertyInfo jsonPropertyInfo = kvp.Value;
HandleObject(jsonPropertyInfo, options, writer, ref state);
return(false);
}
if (state.Current.ExtensionDataStatus == Serialization.ExtensionDataWriteStatus.Writing)
{
JsonPropertyInfo jsonPropertyInfo = state.Current.JsonClassInfo.DataExtensionProperty;
if (jsonPropertyInfo != null)
{
HandleObject(jsonPropertyInfo, options, writer, ref state);
return(false);
}
}
writer.WriteEndObject();
if (state.Current.PopStackOnEndObject)
{
state.Pop();
}
else
{
state.Current.EndObject();
}
return(true);
}
private static bool WriteEndDictionary(ref WriteStack state)
{
if (state.Current.PopStackOnEndCollection)
{
state.Pop();
}
else
{
state.Current.EndDictionary();
}
return(true);
}
private static bool WriteObject(
JsonSerializerOptions options,
Utf8JsonWriter writer,
ref WriteStack state)
{
// Write the start.
if (!state.Current.StartObjectWritten)
{
state.Current.WriteObjectOrArrayStart(ClassType.Object, writer);
state.Current.PropertyEnumerator = state.Current.JsonClassInfo.PropertyCache.GetEnumerator();
state.Current.NextProperty();
}
else if (state.Current.MoveToNextProperty)
{
state.Current.NextProperty();
}
// Determine if we are done enumerating properties.
// If the ClassType is unknown, there will be a policy property applied
JsonClassInfo classInfo = state.Current.JsonClassInfo;
if (classInfo.ClassType != ClassType.Unknown && state.Current.PropertyEnumeratorActive)
{
HandleObject(options, writer, ref state);
return(false);
}
writer.WriteEndObject();
if (state.Current.PopStackOnEndObject)
{
state.Pop();
}
else
{
state.Current.EndObject();
}
return(true);
}
private static bool HandleDictionary(
JsonClassInfo elementClassInfo,
JsonSerializerOptions options,
Utf8JsonWriter writer,
ref WriteStack state)
{
JsonPropertyInfo jsonPropertyInfo = state.Current.JsonPropertyInfo !;
if (state.Current.CollectionEnumerator == null)
{
IEnumerable?enumerable = (IEnumerable?)jsonPropertyInfo.GetValueAsObject(state.Current.CurrentValue);
if (enumerable == null)
{
if ((state.Current.JsonClassInfo !.ClassType != ClassType.Object || // Write null dictionary values
!jsonPropertyInfo.IgnoreNullValues) && // Ignore ClassType.Object properties if IgnoreNullValues is true
state.Current.ExtensionDataStatus != ExtensionDataWriteStatus.Writing) // Ignore null extension property (which is a dictionary)
{
// Write a null object or enumerable.
state.Current.WriteObjectOrArrayStart(ClassType.Dictionary, writer, options, writeNull: true);
}
if (state.Current.PopStackOnEndCollection)
{
state.Pop();
}
return(true);
}
if (state.Current.ExtensionDataStatus != ExtensionDataWriteStatus.Writing)
{
if (options.ReferenceHandling.ShouldWritePreservedReferences())
{
if (WriteReference(ref state, writer, options, ClassType.Dictionary, enumerable))
{
return(WriteEndDictionary(ref state));
}
}
else
{
state.Current.WriteObjectOrArrayStart(ClassType.Dictionary, writer, options);
}
}
// Let the dictionary return the default IEnumerator from its IEnumerable.GetEnumerator().
// For IDictionary-derived classes this is normally be IDictionaryEnumerator.
// For IDictionary<TKey, TVale>-derived classes this is normally IDictionaryEnumerator as well
// but may be IEnumerable<KeyValuePair<TKey, TValue>> if the dictionary only supports generics.
state.Current.CollectionEnumerator = enumerable.GetEnumerator();
}
if (state.Current.CollectionEnumerator.MoveNext())
{
// A dictionary should not have a null KeyValuePair.
Debug.Assert(state.Current.CollectionEnumerator.Current != null);
bool obtainedValues = false;
string?key = default;
object?value = default;
// Check for polymorphism.
if (elementClassInfo.ClassType == ClassType.Unknown)
{
jsonPropertyInfo.GetDictionaryKeyAndValue(ref state.Current, out key, out value);
GetRuntimeClassInfo(value, ref elementClassInfo, options);
obtainedValues = true;
}
if (elementClassInfo.ClassType == ClassType.Value)
{
elementClassInfo.PolicyProperty !.WriteDictionary(ref state, writer);
}
else
{
if (!obtainedValues)
{
jsonPropertyInfo.GetDictionaryKeyAndValue(ref state.Current, out key, out value);
}
if (options.DictionaryKeyPolicy != null && state.Current.ExtensionDataStatus != ExtensionDataWriteStatus.Writing)
{
Debug.Assert(key != null);
key = options.DictionaryKeyPolicy.ConvertName(key);
if (key == null)
{
ThrowHelper.ThrowInvalidOperationException_SerializerDictionaryKeyNull(options.DictionaryKeyPolicy.GetType());
}
}
// An object or another enumerator requires a new stack frame.
state.Push(elementClassInfo, value);
state.Current.KeyName = key;
}
return(false);
}
// We are done enumerating.
if (state.Current.ExtensionDataStatus == ExtensionDataWriteStatus.Writing)
{
state.Current.ExtensionDataStatus = ExtensionDataWriteStatus.Finished;
}
else
{
writer.WriteEndObject();
}
return(WriteEndDictionary(ref state));
}
private static bool HandleEnumerable(
JsonClassInfo elementClassInfo,
JsonSerializerOptions options,
Utf8JsonWriter writer,
ref WriteStack state)
{
Debug.Assert(state.Current.JsonPropertyInfo.ClassType == ClassType.Enumerable);
if (state.Current.CollectionEnumerator == null)
{
IEnumerable enumerable = (IEnumerable)state.Current.JsonPropertyInfo.GetValueAsObject(state.Current.CurrentValue);
if (enumerable == null)
{
// If applicable, we only want to ignore object properties.
if (state.Current.JsonClassInfo.ClassType != ClassType.Object ||
!state.Current.JsonPropertyInfo.IgnoreNullValues)
{
// Write a null object or enumerable.
state.Current.WriteObjectOrArrayStart(ClassType.Enumerable, writer, writeNull: true);
}
if (state.Current.PopStackOnEndCollection)
{
state.Pop();
}
return(true);
}
state.Current.CollectionEnumerator = enumerable.GetEnumerator();
state.Current.WriteObjectOrArrayStart(ClassType.Enumerable, writer);
}
if (state.Current.CollectionEnumerator.MoveNext())
{
// Check for polymorphism.
if (elementClassInfo.ClassType == ClassType.Unknown)
{
object currentValue = state.Current.CollectionEnumerator.Current;
GetRuntimeClassInfo(currentValue, ref elementClassInfo, options);
}
if (elementClassInfo.ClassType == ClassType.Value)
{
elementClassInfo.PolicyProperty.WriteEnumerable(ref state, writer);
}
else if (state.Current.CollectionEnumerator.Current == null)
{
// Write a null object or enumerable.
writer.WriteNullValue();
}
else
{
// An object or another enumerator requires a new stack frame.
object nextValue = state.Current.CollectionEnumerator.Current;
state.Push(elementClassInfo, nextValue);
}
return(false);
}
// We are done enumerating.
writer.WriteEndArray();
if (state.Current.PopStackOnEndCollection)
{
state.Pop();
}
else
{
state.Current.EndArray();
}
return(true);
}
private static bool HandleDictionary(
JsonClassInfo elementClassInfo,
JsonSerializerOptions options,
Utf8JsonWriter writer,
ref WriteStack state)
{
JsonPropertyInfo jsonPropertyInfo = state.Current.JsonPropertyInfo;
if (state.Current.CollectionEnumerator == null)
{
IEnumerable enumerable;
enumerable = (IEnumerable)jsonPropertyInfo.GetValueAsObject(state.Current.CurrentValue);
if (enumerable == null)
{
if ((state.Current.JsonClassInfo.ClassType != ClassType.Object || // Write null dictionary values
!state.Current.JsonPropertyInfo.IgnoreNullValues) && // Ignore ClassType.Object properties if IgnoreNullValues is true
state.Current.ExtensionDataStatus != ExtensionDataWriteStatus.Writing) // Ignore null extension property (which is a dictionary)
{
// Write a null object or enumerable.
state.Current.WriteObjectOrArrayStart(ClassType.Dictionary, writer, options, writeNull: true);
}
if (state.Current.PopStackOnEndCollection)
{
state.Pop();
}
return(true);
}
if (enumerable is IDictionary dictionary)
{
state.Current.CollectionEnumerator = dictionary.GetEnumerator();
}
else
{
state.Current.CollectionEnumerator = enumerable.GetEnumerator();
}
if (state.Current.ExtensionDataStatus != ExtensionDataWriteStatus.Writing)
{
state.Current.WriteObjectOrArrayStart(ClassType.Dictionary, writer, options);
}
}
if (state.Current.CollectionEnumerator.MoveNext())
{
// Check for polymorphism.
if (elementClassInfo.ClassType == ClassType.Unknown)
{
object currentValue = ((IDictionaryEnumerator)state.Current.CollectionEnumerator).Entry.Value;
GetRuntimeClassInfo(currentValue, ref elementClassInfo, options);
}
if (elementClassInfo.ClassType == ClassType.Value)
{
elementClassInfo.PolicyProperty.WriteDictionary(ref state, writer);
}
else if (state.Current.CollectionEnumerator.Current == null)
{
writer.WriteNull(jsonPropertyInfo.Name);
}
else
{
// An object or another enumerator requires a new stack frame.
var enumerator = (IDictionaryEnumerator)state.Current.CollectionEnumerator;
object value = enumerator.Value;
state.Push(elementClassInfo, value);
state.Current.KeyName = (string)enumerator.Key;
}
return(false);
}
// We are done enumerating.
if (state.Current.ExtensionDataStatus == ExtensionDataWriteStatus.Writing)
{
state.Current.ExtensionDataStatus = ExtensionDataWriteStatus.Finished;
}
else
{
writer.WriteEndObject();
}
if (state.Current.PopStackOnEndCollection)
{
state.Pop();
}
else
{
state.Current.EndDictionary();
}
return(true);
}
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);
}
