def _parse_snippets_file(data, filename):
 python_globals = defaultdict(list)
 lines = LineIterator(data)
 current_priority = 0
 actions = {}
 context = None
 for line in lines:
  if (not line.strip()):
   continue
  (head, tail) = head_tail(line)
  if (head in ('snippet', 'global')):
   snippet = _handle_snippet_or_global(filename, line, lines, python_globals, current_priority, actions, context)
   actions = {}
   context = None
   if (snippet is not None):
    (yield snippet)
  elif (head == 'extends'):
   (yield handle_extends(tail, lines.line_index))
  elif (head == 'clearsnippets'):
   (yield ('clearsnippets', (current_priority, tail.split())))
  elif (head == 'context'):
   (head, context) = handle_context(tail, lines.line_index)
   if (head == 'error'):
    (yield (head, tail))
  elif (head == 'priority'):
   try:
    current_priority = int(tail.split()[0])
   except (ValueError, IndexError):
    (yield ('error', (('Invalid priority %r' % tail), lines.line_index)))
  elif (head in ['pre_expand', 'post_expand', 'post_jump']):
   (head, tail) = handle_action(head, tail, lines.line_index)
   if (head == 'error'):
    (yield (head, tail))
   else:
    (actions[head],) = tail
  elif (head and (not head.startswith('#'))):
   (yield ('error', (('Invalid line %r' % line.rstrip()), lines.line_index)))

def _parse_snippets_file ( data , filename ) : python_globals = defaultdict ( list ) lines = LineIterator ( data ) current_priority = 0 actions = { } context = None for line in lines : if ( not line . strip ( ) ) : continue ( head , tail ) = head_tail ( line ) if ( head in ( 'snippet' , 'global' ) ) : snippet = _handle_snippet_or_global ( filename , line , lines , python_globals , current_priority , actions , context ) actions = { } context = None if ( snippet is not None ) : ( yield snippet ) elif ( head == 'extends' ) : ( yield handle_extends ( tail , lines . line_index ) ) elif ( head == 'clearsnippets' ) : ( yield ( 'clearsnippets' , ( current_priority , tail . split ( ) ) ) ) elif ( head == 'context' ) : ( head , context ) = handle_context ( tail , lines . line_index ) if ( head == 'error' ) : ( yield ( head , tail ) ) elif ( head == 'priority' ) : try : current_priority = int ( tail . split ( ) [ 0 ] ) except ( ValueError , IndexError ) : ( yield ( 'error' , ( ( 'Invalid priority %r' % tail ) , lines . line_index ) ) ) elif ( head in [ 'pre_expand' , 'post_expand' , 'post_jump' ] ) : ( head , tail ) = handle_action ( head , tail , lines . line_index ) if ( head == 'error' ) : ( yield ( head , tail ) ) else : ( actions [ head ] , ) = tail elif ( head and ( not head . startswith ( '#' ) ) ) : ( yield ( 'error' , ( ( 'Invalid line %r' % line . rstrip ( ) ) , lines . line_index ) ) )
parse data assuming it is a .