import re
pat_cdecl = re.compile(r"(\w+)\s+(\w+)\((((\w+)\s+(\w+))(,\s*(\w+)\s+(\w+))*)?\);")

ctype = {
  "void*": c_void, "char*": c_char_p,
  "int": c_int, "double": c_double
}.__getitem__
def foreign(cdecl):
  """t_result name(type name, ...args);"""
  m = pat_cdecl.match(cdecl).groups()
  t_result, name = m[0:2]
  if m[3] == None: return cfunc(name, ctype(t_result))
  args = [(m[i+2], ctype(m[i+1])) for i in range(3, len(m), 3)]
  return cfunc(name, ctype(t_result), *args)

t0 = time()
t1 = None
def giveSegment():
  nonlocal t1
  t2 = time()
  reducer.accept( (t1-t0, t2-t0, synth.last_pitch) )
  t1 = t2 #< new start

synth.last_pitch = next(pitchz, 50)
def nextPitch():
  try: return next(pitchz)
  except StopIteration: raise NonlocalReturn("done")
def doSplit(): synth.noteSwitch(nextPitch())

def onEvent(event):
  nonlocal t1
  if event.type == pygame.KEYDOWN:
    key = chr(event.key)
    if key == 'a':
      t1 = time()
      synth.noteon(synth.last_pitch)
  elif event.type == pygame.KEYUP:
    key = chr(event.key)
    if key == 'a':
      synth.noteoff()
      synth.last_pitch = nextPitch()
      giveSegment()
    elif key == 's' and not is_hot: doSplit(); giveSegment()
    elif key == ' ': onPausePlay()