code: def JSONObject(
      s_and_end,
      strict,
      scan_once,
      object_hook,
      object_pairs_hook,
      memo=None,
      _w=WHITESPACE.match,
      _ws=WHITESPACE_STR,
  ):
      s, end = s_and_end
      pairs = []
      pairs_append = pairs.append
      # Backwards compatibility
      if memo is None:
          memo = {}
      memo_get = memo.setdefault
      # Use a slice to prevent IndexError from being raised, the following
      # check will raise a more specific ValueError if the string is empty
      nextchar = s[end : end + 1]
      # Normally we expect nextchar == '"'
      if nextchar != '"':
          if nextchar in _ws:
              end = _w(s, end).end()
              nextchar = s[end : end + 1]
          # Trivial empty object
          if nextchar == "}":
              if object_pairs_hook is not None:
                  result = object_pairs_hook(pairs)
                  return result, end + 1
              pairs = {}
              if object_hook is not None:
                  pairs = object_hook(pairs)
              return pairs, end + 1
          elif nextchar != '"':
              raise JSONDecodeError(
                  "Expecting property name enclosed in double quotes",
                  s,
                  end,
              )
      end += 1
      while True:
          key, end = scanstring(s, end, strict)
          key = memo_get(key, key)
          # To skip some function call overhead we optimize the fast paths where
          # the JSON key separator is ": " or just ":".
          if s[end : end + 1] != ":":
              end = _w(s, end).end()
              if s[end : end + 1] != ":":
                  raise JSONDecodeError(
                      "Expecting ':' delimiter", s, end
                  )
          end += 1
  
          try:
              if s[end] in _ws:
                  end += 1
                  if s[end] in _ws:
                      end = _w(s, end + 1).end()
          except IndexError:
              pass
  
          try:
              value, end = scan_once(s, end)
          except StopIteration as err:
              raise JSONDecodeError(
                  "Expecting value", s, err.value
              ) from None
          pairs_append((key, value))
          try:
              nextchar = s[end]
              if nextchar in _ws:
                  end = _w(s, end + 1).end()
                  nextchar = s[end]
          except IndexError:
              nextchar = ""
          end += 1
  
          if nextchar == "}":
              break
          elif nextchar != ",":
              raise JSONDecodeError(
                  "Expecting ',' delimiter", s, end - 1
              )
          comma_idx = end - 1
          end = _w(s, end).end()
          nextchar = s[end : end + 1]
          end += 1
          if nextchar != '"':
              if nextchar == "}":
                  raise JSONDecodeError(
                      "Illegal trailing comma before end of object",
                      s,
                      comma_idx,
                  )
              raise JSONDecodeError(
                  "Expecting property name enclosed in double quotes",
                  s,
                  end - 1,
              )
      if object_pairs_hook is not None:
          result = object_pairs_hook(pairs)
          return result, end
      pairs = dict(pairs)
      if object_hook is not None:
          pairs = object_hook(pairs)
      return pairs, end
  
file_path: cpython/Lib/json/decoder.py
imports: import re
  from json import scanner
label_desc: Use image node_id 3 for calling a global function with example usage: JSONObject(s_and_end, strict, scan_once, object_hook, object_pairs_hook, memo, _w, _ws) and returns: pairs,  end, result,  end, pairs,  unknown, result,  unknown