public virtual void Export(object value, JsonWriter writer)
{
if (writer == null)
{
throw new ArgumentNullException("writer");
}
if (JsonNull.LogicallyEquals(value))
{
writer.WriteNull();
}
else
{
IExporter exporter = FindExporter(value.GetType());
if (exporter != null)
{
exporter.Export(this, value, writer);
}
else
{
writer.WriteString(value.ToString());
}
}
}
/// <summary>
/// Writes a JSON array of JSON strings given an enumerable source
/// of arbitrary <see cref="Object"/> values.
/// </summary>
public void WriteStringArray(IEnumerable values)
{
if (values == null)
{
WriteNull();
}
else
{
WriteStartArray();
foreach (object value in values)
{
if (JsonNull.LogicallyEquals(value))
{
WriteNull();
}
else
{
WriteString(value.ToString());
}
}
WriteEndArray();
}
}
/// <summary>
/// Writes a JSON array of JSON strings given an array of
/// <see cref="String"/> values.
/// </summary>
public void WriteStringArray(params string[] values)
{
if (values == null)
{
WriteNull();
}
else
{
WriteStartArray();
foreach (string value in values)
{
if (JsonNull.LogicallyEquals(value))
{
WriteNull();
}
else
{
WriteString(value);
}
}
WriteEndArray();
}
}
protected override void ExportValue(ExportContext context, object value, JsonWriter writer)
{
Debug.Assert(context != null);
Debug.Assert(value != null);
Debug.Assert(writer != null);
if (_properties.Count == 0)
{
writer.WriteString(value.ToString());
}
else
{
ObjectReferenceTracker tracker = null;
try
{
writer.WriteStartObject();
foreach (PropertyDescriptor property in _properties)
{
object propertyValue = property.GetValue(value);
if (!JsonNull.LogicallyEquals(propertyValue))
{
writer.WriteMember(property.Name);
if (tracker == null)
{
//
// We are about to enter a deeper scope so
// start tracking the current object being
// exported. This will help to detect
// recursive references that may occur
// through this exporter deeper in the tree.
//
tracker = TrackObject(context, value);
}
context.Export(propertyValue, writer);
}
}
writer.WriteEndObject();
}
finally
{
if (tracker != null)
{
tracker.Pop(value);
}
}
}
}
public virtual void Export(ExportContext context, object value, JsonWriter writer)
{
if (context == null)
{
throw new ArgumentNullException("context");
}
if (writer == null)
{
throw new ArgumentNullException("writer");
}
if (JsonNull.LogicallyEquals(value))
{
writer.WriteNull();
}
else
{
ExportValue(context, value, writer);
}
}
