/// <summary>
/// Creates new context object for the next level of recursion
/// </summary>
/// <param name="fieldName">field name being walked at next recursion level</param>
/// <returns>new context</returns>
public DumperContext RecursionCopy(string fieldName)
{
var context = new DumperContext(this.MaxDepth, this.writer)
{
CurrentDepth = (ushort)(this.CurrentDepth + 1),
FieldName = fieldName,
Prefix = this.Prefix,
EnumerateCollections = this.EnumerateCollections,
};
return(context);
}
/// <summary>
/// writes/walks the element into a context
/// </summary>
/// <param name="element">element to write/walk</param>
/// <param name="context">current dump context</param>
public static void Write(object?element, DumperContext context)
{
context = Arguments.EnsureNotNull(context, nameof(context));
if (element == null)
{
DumpHelper.WriteHeader(context);
DumpHelper.WriteValue("<NULL>", context);
return;
}
if (context.CurrentDepth == context.MaxDepth)
{
DumpHelper.WriteHeader(context);
DumpHelper.WriteValue(element.ToString() !, context);
return;
}
var elementType = element.GetType();
if (DumpHelper.IsSimpleType(elementType))
{
DumpHelper.WriteHeader(context);
DumpHelper.WriteValue(element, context);
return;
}
if (element is IEnumerable)
{
if (!context.EnumerateCollections)
{
return;
}
// TODO: enumerate
}
var properties = elementType.GetProperties(BindingFlags.Instance | BindingFlags.Public);
foreach (var property in properties)
{
var newValue = property.GetValue(element);
DumpHelper.Write(newValue, context.RecursionCopy(property.Name));
}
}
/// <summary>
/// writes/walks the element's value into a context
/// </summary>
/// <param name="element">element to write/walk</param>
/// <param name="context">current dump context</param>
private static void WriteValue(object element, DumperContext context)
{
Arguments.NotNull(context, nameof(context));
if (element == null)
{
context.Append("null");
}
else if (element is DateTime time)
{
context.Append(time.ToShortDateString());
}
else if (element is char charElement)
{
if (charElement == '\0')
{
context.Append("''");
}
else
{
context.Append("'" + charElement + "'");
}
}
else if (element is ValueType || element is string)
{
context.Append(element.ToString() !);
}
else if (element is IEnumerable)
{
context.Append("...");
}
else
{
context.Append("{ }");
}
context.Append(Environment.NewLine);
}
/// <summary>
/// writes/walks the element's name/header into a context
/// </summary>
/// <param name="context">current dump context</param>
private static void WriteHeader(DumperContext context)
{
Arguments.NotNull(context, nameof(context));
context.AppendFormat(CultureInfo.InvariantCulture, "{0}{1}:", new string(' ', context.CurrentDepth), context.FieldName);
}