kumquat-buildroot/support/scripts/pycompile.py
Andrey Smirnov 61fcd08247 scripts/pycompile: Accomodate latest Python 3 codebase
As of the version 3.6.0 compile_dir() call will treat its 'quiet'
argument as a full blown integer rather than a boolean value and perform
integer comparison operations such as '<' or '>='.

To account for that convert ReportProblem type to be a true derivative
of built-in int() and override all of int's rich comparison operators in
order to be able to "sniff" for PyCompileError in all possible use-cases

The integer value ReportProblem pretends to be is teremined by class
variable VALUE which is set to 1.

Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
Reviewed-by: Yegor Yefremov <yegorslists@googlemail.com>
Tested-by: Yegor Yefremov <yegorslists@googlemail.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
2017-03-19 15:04:32 +01:00

58 lines
1.7 KiB
Python

#!/usr/bin/env python
'''Wrapper for python2 and python3 around compileall to raise exception
when a python byte code generation failed.
Inspired from:
http://stackoverflow.com/questions/615632/how-to-detect-errors-from-compileall-compile-dir
'''
from __future__ import print_function
import sys
import py_compile
import compileall
def check_for_errors(comparison):
'''Wrap comparison operator with code checking for PyCompileError.
If PyCompileError was raised, re-raise it again to abort execution,
otherwise perform comparison as expected.
'''
def operator(self, other):
exc_type, value, traceback = sys.exc_info()
if exc_type is not None and issubclass(exc_type,
py_compile.PyCompileError):
print("Cannot compile %s" % value.file)
raise value
return comparison(self, other)
return operator
class ReportProblem(int):
'''Class that pretends to be an int() object but implements all of its
comparison operators such that it'd detect being called in
PyCompileError handling context and abort execution
'''
VALUE = 1
def __new__(cls, *args, **kwargs):
return int.__new__(cls, ReportProblem.VALUE, **kwargs)
@check_for_errors
def __lt__(self, other):
return ReportProblem.VALUE < other
@check_for_errors
def __eq__(self, other):
return ReportProblem.VALUE == other
def __ge__(self, other):
return not self < other
def __gt__(self, other):
return not self < other and not self == other
def __ne__(self, other):
return not self == other
compileall.compile_dir(sys.argv[1], quiet=ReportProblem())