def token_kwargs(bits, parser, support_legacy=False):
 if (not bits):
  return {}
 match = kwarg_re.match(bits[0])
 kwarg_format = (match and match.group(1))
 if (not kwarg_format):
  if (not support_legacy):
   return {}
  if ((len(bits) < 3) or (bits[1] != 'as')):
   return {}
 kwargs = {}
 while bits:
  if kwarg_format:
   match = kwarg_re.match(bits[0])
   if ((not match) or (not match.group(1))):
    return kwargs
   (key, value) = match.groups()
   del bits[:1]
  else:
   if ((len(bits) < 3) or (bits[1] != 'as')):
    return kwargs
   (key, value) = (bits[2], bits[0])
   del bits[:3]
  kwargs[key] = parser.compile_filter(value)
  if (bits and (not kwarg_format)):
   if (bits[0] != 'and'):
    return kwargs
   del bits[:1]
 return kwargs

def token_kwargs ( bits , parser , support_legacy = False ) : if ( not bits ) : return { } match = kwarg_re . match ( bits [ 0 ] ) kwarg_format = ( match and match . group ( 1 ) ) if ( not kwarg_format ) : if ( not support_legacy ) : return { } if ( ( len ( bits ) < 3 ) or ( bits [ 1 ] != 'as' ) ) : return { } kwargs = { } while bits : if kwarg_format : match = kwarg_re . match ( bits [ 0 ] ) if ( ( not match ) or ( not match . group ( 1 ) ) ) : return kwargs ( key , value ) = match . groups ( ) del bits [ : 1 ] else : if ( ( len ( bits ) < 3 ) or ( bits [ 1 ] != 'as' ) ) : return kwargs ( key , value ) = ( bits [ 2 ] , bits [ 0 ] ) del bits [ : 3 ] kwargs [ key ] = parser . compile_filter ( value ) if ( bits and ( not kwarg_format ) ) : if ( bits [ 0 ] != 'and' ) : return kwargs del bits [ : 1 ] return kwargs
a utility method for parsing token keyword arguments .