os-traits/os_traits/utils.py

57 lines
1.7 KiB
Python

# -*- coding: utf-8 -*-
# Licensed under the Apache License, Version 2.0 (the "License"); you may
# not use this file except in compliance with the License. You may obtain
# a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
# License for the specific language governing permissions and limitations
# under the License.
import functools
import sys
import os_traits
def symbolize(mod_name, name):
"""Given a reference to a Python module object and a short string name for
a trait, registers a symbol in the module that corresponds to the full
namespaced trait name.
For example, if called like so:
:code:
# In file /os_traits/hw/cpu/x86.py
import functools
from os_traits import utils
mod_register = functools.partial(utils.symbolize, __name__)
mod_register('AVX2')
mod_register('SSE')
Would end up creating the following symbols:
os_traits.hw.cpu.x86.AVX2 with the value of 'HW_CPU_X86_AVX2'
os_traits.hw.cpu.x86.SSE with the value of 'HW_CPU_X86_SSE'
os_traits.HW_CPU_X86_AVX2 with the value of 'HW_CPU_X86_AVX2'
os_traits.HW_CPU_X86_SSE with the value of 'HW_CPU_X86_SSE'
"""
leaf_mod = sys.modules[mod_name]
value_base = '_'.join([m.upper() for m in mod_name.split('.')[1:]])
value = value_base + '_' + name.upper()
setattr(os_traits, value, value) # os_traits.HW_CPU_X86_SSE
setattr(leaf_mod, name.upper(), value) # os_traits.hw.cpu.x86.SSE
def register_fn(mod_name):
return functools.partial(symbolize, mod_name)