import bindings/quickjs

# This is the WebIDL dictionary type.
# We only use it for type inference in generics.
#TODO required members
type JSDict* = object of RootObj

# Containers compatible with the internal representation of strings in QuickJS.
# To convert these, a copy is still needed; however, they remove the UTF-8
# transcoding step.
type
  NarrowString* = distinct string
  WideString* = distinct seq[uint16]

# Various containers for array buffer types.
# Converting these only requires copying the metadata; buffers are never copied.
type
  JSArrayBuffer* = object
    p*: ptr UncheckedArray[uint8]
    len*: csize_t
    dealloc*: JSFreeArrayBufferDataFunc

  JSArrayBufferView* = object
    abuf*: JSArrayBuffer
    offset*: csize_t # offset into the buffer
    nmemb*: csize_t # number of members
    nsize*: csize_t # member size

  JSUint8Array* = object
    abuf*: JSArrayBuffer
    offset*: csize_t # offset into the buffer
    nmemb*: csize_t # number of members

func high*(abuf: JSArrayBuffer): int =
  return int(abuf.len) - 1

# A specialization of JSValue to make writing generic code for functions
# easier.
type JSValueFunction* = ref object
  fun*: JSValue

converter toJSValue*(f: JSValueFunction): JSValue =
  f.fun