/// <summary>
/// Get layout of <typeparamref name="T"/> with padding information ordered by offset.
/// </summary>
/// <typeparam name="T">To to get structure of.</typeparam>
/// <param name="considerPrimitives">Eny type in collection will be considered primitive and will not be splitted into several fields.</param>
/// <param name="recursive">If true the resulting list will have fields for all nested types as well.</param>
/// <param name="hierarchical">Not implemented yet if specified.</param>
public static IReadOnlyList <FieldLayoutBase> GetLayout <T>(bool recursive = true, IReadOnlyCollection <Type> considerPrimitives = null, bool hierarchical = false)
where T : struct
{
if (hierarchical)
{
throw new NotImplementedException("Could report recursive layout with complex fields in each other");
}
var tree = GetLayoutTree <T>();
IEnumerable <FieldLayout> fieldsLayout =
GetFieldsLayoutInternal <T>(in tree, recursive, considerPrimitives)
.OrderBy(x => x.Offset);
var layouts = new List <FieldLayoutBase>();
Padder.AddPaddings(true, Unsafe.SizeOf <T>(), fieldsLayout.OrderBy(x => x.Offset).ToArray(), layouts);
return(layouts);
}
/// <summary>
/// Gets a layout of a given <paramref name="type"/>.
/// </summary>
public static TypeLayout GetLayout(Type type, TypeLayoutCache?cache = null, bool includePaddings = true)
{
if (cache != null && cache.LayoutCache.TryGetValue(type, out var result))
{
return(result);
}
try
{
result = DoGetLayout();
cache?.LayoutCache.TryAdd(type, result);
return(result);
}
catch (Exception e)
{
Console.WriteLine($"Failed to create an instance of type {type}: {e}.");
throw;
}
TypeLayout DoGetLayout()
{
var(size, overhead) = TypeInspector.GetSize(type);
// fields with no paddings
var fieldsAndOffsets = TypeInspector.GetFieldOffsets(type);
var fieldsOffsets = fieldsAndOffsets
.Select(x => new FieldLayout(x.offset, x.fieldInfo, TypeInspector.GetFieldSize(x.fieldInfo.FieldType)))
.ToArray();
var layouts = new List <FieldLayoutBase>();
Padder.AddPaddings(includePaddings, size, fieldsOffsets, layouts);
return(new TypeLayout(type, size, overhead, layouts.ToArray(), cache));
}
}
