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Diffstat (limited to 'generator/google/protobuf/internal/api_implementation.py')
| -rw-r--r-- | generator/google/protobuf/internal/api_implementation.py | 113 |
1 files changed, 0 insertions, 113 deletions
diff --git a/generator/google/protobuf/internal/api_implementation.py b/generator/google/protobuf/internal/api_implementation.py deleted file mode 100644 index 460a4a6..0000000 --- a/generator/google/protobuf/internal/api_implementation.py +++ /dev/null @@ -1,113 +0,0 @@ -# Protocol Buffers - Google's data interchange format -# Copyright 2008 Google Inc. All rights reserved. -# https://developers.google.com/protocol-buffers/ -# -# Redistribution and use in source and binary forms, with or without -# modification, are permitted provided that the following conditions are -# met: -# -# * Redistributions of source code must retain the above copyright -# notice, this list of conditions and the following disclaimer. -# * Redistributions in binary form must reproduce the above -# copyright notice, this list of conditions and the following disclaimer -# in the documentation and/or other materials provided with the -# distribution. -# * Neither the name of Google Inc. nor the names of its -# contributors may be used to endorse or promote products derived from -# this software without specific prior written permission. -# -# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS -# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT -# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR -# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT -# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, -# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT -# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, -# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY -# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT -# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE -# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. - -"""Determine which implementation of the protobuf API is used in this process. -""" - -import os -import warnings -import sys - -try: - # pylint: disable=g-import-not-at-top - from google.protobuf.internal import _api_implementation - # The compile-time constants in the _api_implementation module can be used to - # switch to a certain implementation of the Python API at build time. - _api_version = _api_implementation.api_version - _proto_extension_modules_exist_in_build = True -except ImportError: - _api_version = -1 # Unspecified by compiler flags. - _proto_extension_modules_exist_in_build = False - -if _api_version == 1: - raise ValueError('api_version=1 is no longer supported.') -if _api_version < 0: # Still unspecified? - try: - # The presence of this module in a build allows the proto implementation to - # be upgraded merely via build deps rather than a compiler flag or the - # runtime environment variable. - # pylint: disable=g-import-not-at-top - from google.protobuf import _use_fast_cpp_protos - # Work around a known issue in the classic bootstrap .par import hook. - if not _use_fast_cpp_protos: - raise ImportError('_use_fast_cpp_protos import succeeded but was None') - del _use_fast_cpp_protos - _api_version = 2 - except ImportError: - if _proto_extension_modules_exist_in_build: - if sys.version_info[0] >= 3: # Python 3 defaults to C++ impl v2. - _api_version = 2 - # TODO(b/17427486): Make Python 2 default to C++ impl v2. - -_default_implementation_type = ( - 'python' if _api_version <= 0 else 'cpp') - -# This environment variable can be used to switch to a certain implementation -# of the Python API, overriding the compile-time constants in the -# _api_implementation module. Right now only 'python' and 'cpp' are valid -# values. Any other value will be ignored. -_implementation_type = os.getenv('PROTOCOL_BUFFERS_PYTHON_IMPLEMENTATION', - _default_implementation_type) - -if _implementation_type != 'python': - _implementation_type = 'cpp' - -if 'PyPy' in sys.version and _implementation_type == 'cpp': - warnings.warn('PyPy does not work yet with cpp protocol buffers. ' - 'Falling back to the python implementation.') - _implementation_type = 'python' - -# This environment variable can be used to switch between the two -# 'cpp' implementations, overriding the compile-time constants in the -# _api_implementation module. Right now only '2' is supported. Any other -# value will cause an error to be raised. -_implementation_version_str = os.getenv( - 'PROTOCOL_BUFFERS_PYTHON_IMPLEMENTATION_VERSION', '2') - -if _implementation_version_str != '2': - raise ValueError( - 'unsupported PROTOCOL_BUFFERS_PYTHON_IMPLEMENTATION_VERSION: "' + - _implementation_version_str + '" (supported versions: 2)' - ) - -_implementation_version = int(_implementation_version_str) - - -# Usage of this function is discouraged. Clients shouldn't care which -# implementation of the API is in use. Note that there is no guarantee -# that differences between APIs will be maintained. -# Please don't use this function if possible. -def Type(): - return _implementation_type - - -# See comment on 'Type' above. -def Version(): - return _implementation_version |