/// <summary>
/// Clones <see cref="Utf8JsonWriter"/> with new <see cref="JsonWriterOptions"/>.
/// </summary>
/// <param name="writer">Source writer.</param>
/// <param name="newOptions">Options to use in new writer.</param>
/// <returns>New copy of <see cref="Utf8JsonWriter"/> with new options.</returns>
public static Utf8JsonWriter Clone(this Utf8JsonWriter writer, JsonWriterOptions newOptions)
{
AssertReflectionStateIsValid();
Utf8JsonWriter writerCopy;
// Get internal output to use in new writer
IBufferWriter <byte>?output = (IBufferWriter <byte>?)_reflectionCache.OutputField.GetValue(writer);
if (output != null)
{
// Create copy
writerCopy = new Utf8JsonWriter(output, newOptions);
}
else
{
// Get internal stream to use in new writer
Stream?stream = (Stream?)_reflectionCache.StreamField.GetValue(writer);
// Create copy
writerCopy = new Utf8JsonWriter(stream, newOptions);
}
// Copy internal state
writer.CopyStateTo(writerCopy);
return(writerCopy);
}
/// <inheritdoc />
public override void Write(Utf8JsonWriter writer, TPropertyContainer container, JsonSerializerOptions options)
{
writer.WriteStartObject();
if (container != null && container.Properties.Count > 0)
{
string GetJsonPropertyName(string name) => options.PropertyNamingPolicy?.ConvertName(name) ?? name;
if (Options.WriteSchemaCompact)
{
Type containerType = container.GetType();
bool writeSchemaCompact = true;
if (Options.WriteSchemaOnceForKnownTypes && container is IKnownPropertySet)
{
JsonWriterContext?jsonWriterContext = writer.AsMetadataProvider().GetMetadata <JsonWriterContext>();
if (jsonWriterContext != null)
{
writeSchemaCompact = !jsonWriterContext.IsWritten(containerType);
}
}
if (writeSchemaCompact)
{
writer.WritePropertyName("$metadata.schema.compact");
string[] compactSchema = MetadataSchema.GenerateCompactSchema(container, GetJsonPropertyName, Options.Separator, Options.TypeMapper);
JsonSerializer.Serialize(writer, compactSchema, options);
if (Options.WriteSchemaOnceForKnownTypes && container is IKnownPropertySet)
{
writer.AsMetadataProvider().ConfigureMetadata <JsonWriterContext>(context => context.SetIsWritten(containerType));
}
}
}
foreach (IPropertyValue propertyValue in container.Properties)
{
string jsonPropertyName = GetJsonPropertyName(propertyValue.PropertyUntyped.Name);
Type propertyType = propertyValue.PropertyUntyped.Type;
// PropertyName
writer.WritePropertyName(jsonPropertyName);
if (Options.WriteArraysInOneRow && propertyType.IsArray && writer.Options.Indented)
{
// Creates NotIndented writer
Utf8JsonWriter writerCopy = writer.CloneNotIndented();
// PropertyValue
JsonSerializer.Serialize(writerCopy, propertyValue.ValueUntyped, propertyType, options);
// Needs to copy internal state back to writer
writerCopy.CopyStateTo(writer);
}
else
{
// PropertyValue
JsonSerializer.Serialize(writer, propertyValue.ValueUntyped, propertyType, options);
}
}
}
writer.WriteEndObject();
}