type
  NdString* = ptr object
    len*: uint32
    hash*: uint32
    chars*: UncheckedArray[char]

proc free*(ndStr: var NdString) =
  dealloc(ndStr)

# for hashtable:

proc fnv1a*(ndStr: NdString): int =
  var hash = 2166136261'u32
  for i in countup(0, ndStr.len.int - 1):
    hash = hash xor (ndStr.chars[i]).uint32
    hash *= 16777619
  return hash.int

proc equal*(left, right: NdString): bool =
  left == right