/thirdparty/breakpad/third_party/protobuf/protobuf/python/google/protobuf/internal/api_implementation.py

 1# Protocol Buffers - Google's data interchange format
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30
31"""
32This module is the central entity that determines which implementation of the
33API is used.
34"""
35
36__author__ = 'petar@google.com (Petar Petrov)'
37
38import os
39# This environment variable can be used to switch to a certain implementation
40# of the Python API. Right now only 'python' and 'cpp' are valid values. Any
41# other value will be ignored.
42_implementation_type = os.getenv('PROTOCOL_BUFFERS_PYTHON_IMPLEMENTATION',
43                                 'python')
44
45
46if _implementation_type != 'python':
47  # For now, by default use the pure-Python implementation.
48  # The code below checks if the C extension is available and
49  # uses it if it is available.
50  _implementation_type = 'cpp'
51  ## Determine automatically which implementation to use.
52  #try:
53  #  from google.protobuf.internal import cpp_message
54  #  _implementation_type = 'cpp'
55  #except ImportError, e:
56  #  _implementation_type = 'python'
57
58
59# Usage of this function is discouraged. Clients shouldn't care which
60# implementation of the API is in use. Note that there is no guarantee
61# that differences between APIs will be maintained.
62# Please don't use this function if possible.
63def Type():
64  return _implementation_type