public static object Format(object value)
{
// If it's null, return a known string for null values
if (value == null)
{
return(NullInstance);
}
// Give another partial implementation a chance to provide its own string representation
string result = null;
AdditionalCustomizedToString(value, ref result);
if (result != null)
{
return(result);
}
// Format arrays with their element type name and length
Array arr = value as Array;
if (arr != null)
{
return($"{arr.GetType().GetElementType()}[{((Array)value).Length}]");
}
// Format ICollections as the name and count
ICollection c = value as ICollection;
if (c != null)
{
return($"{c.GetType().Name}({c.Count})");
}
// Format SafeHandles as their type, hash code, and pointer value
SafeHandle handle = value as SafeHandle;
if (handle != null)
{
return($"{handle.GetType().Name}:{handle.GetHashCode()}(0x{handle.DangerousGetHandle():X})");
}
// Format IntPtrs as hex
if (value is IntPtr)
{
return($"0x{value:X}");
}
// If the string representation of the instance would just be its type name,
// use its id instead.
string toString = value.ToString();
if (toString == null || toString == value.GetType().FullName)
{
return(IdOf(value));
}
// Otherwise, return the original object so that the caller does default formatting.
return(value);
}