text: # -*- coding: UTF-8 -*-
  
  # Copyright (c) 2016 Praveen Shirali <praveengshirali@gmail.com>
  #
  # Permission is hereby granted, free of charge, to any person obtaining a copy
  # of this software and associated documentation files (the "Software"), to deal
  # in the Software without restriction, including without limitation the rights
  # to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
  # copies of the Software, and to permit persons to whom the Software is
  # furnished to do so, subject to the following conditions:
  #
  # The above copyright notice and this permission notice shall be included in
  # all copies or substantial portions of the Software.
  #
  # THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  # IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  # FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
  # AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  # LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  # OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  # SOFTWARE.
  
  
  from __future__ import unicode_literals, print_function
  
  
  """
  
  This module contains some tracing code to detect the flow of component
  instantiation. The trace logs are made available on top of debug logging.
  
  """
  
  
  __author__ = "Praveen Shirali <praveengshirali@gmail.com>"
  
  
  from functools import wraps
  from logging import getLogger
  
  
  TRACE = False
  log = getLogger(__name__)
  
  
  def trace(msg):
      global TRACE
      if TRACE is True:
          log.info("{}{}{}".format('\x1b[31m', msg, '\x1b[m'))
  
  
  def set_trace(boolean):
      global TRACE
      TRACE = boolean
  
  
  def trace_method(cls):
      def outer(func):
          @wraps(func)
          def inner(self, *args, **kwargs):
              self_cls = self.__class__.__mro__[0]
              retval = func(self, *args, **kwargs)
              if cls is self_cls:
                  trace("Assembled {}".format(self))
              return retval
          return inner
      return outer
  
  
  def traceable(cls):
      init = getattr(cls, "__init__")
      setattr(cls, "__init__", trace_method(cls)(init))
      return cls
  