internal static void AddBytes(
this TemplateMemory memory,
PipelineContextData value,
Boolean traverse)
{
var bytes = CalculateBytes(memory, value, traverse);
memory.AddBytes(bytes);
}
internal static Int32 CalculateBytes(
this TemplateMemory memory,
PipelineContextData value,
Boolean traverse)
{
var enumerable = traverse ? value.Traverse() : new[] { value } as IEnumerable <PipelineContextData>;
var result = 0;
foreach (var item in enumerable)
{
// This measurement doesn't have to be perfect
// https://codeblog.jonskeet.uk/2011/04/05/of-memory-and-strings/
switch (item?.Type)
{
case PipelineContextDataType.String:
var str = item.AssertString("string").Value;
checked
{
result += TemplateMemory.MinObjectSize + TemplateMemory.StringBaseOverhead + ((str?.Length ?? 0) * sizeof(Char));
}
break;
case PipelineContextDataType.Array:
case PipelineContextDataType.Dictionary:
case PipelineContextDataType.Boolean:
case PipelineContextDataType.Number:
// Min object size is good enough. Allows for base + a few fields.
checked
{
result += TemplateMemory.MinObjectSize;
}
break;
case null:
checked
{
result += IntPtr.Size;
}
break;
default:
throw new NotSupportedException($"Unexpected pipeline context data type '{item.Type}'");
}
}
return(result);
}
