diff options
Diffstat (limited to 'lib/spack/external/functools_backport.py')
-rw-r--r-- | lib/spack/external/functools_backport.py | 47 |
1 files changed, 0 insertions, 47 deletions
diff --git a/lib/spack/external/functools_backport.py b/lib/spack/external/functools_backport.py deleted file mode 100644 index b3c913ffd7..0000000000 --- a/lib/spack/external/functools_backport.py +++ /dev/null @@ -1,47 +0,0 @@ -# -# Backport of Python 2.7's total_ordering. -# - -def total_ordering(cls): - """Class decorator that fills in missing ordering methods""" - convert = { - '__lt__': [('__gt__', lambda self, other: not (self < other or self == other)), - ('__le__', lambda self, other: self < other or self == other), - ('__ge__', lambda self, other: not self < other)], - '__le__': [('__ge__', lambda self, other: not self <= other or self == other), - ('__lt__', lambda self, other: self <= other and not self == other), - ('__gt__', lambda self, other: not self <= other)], - '__gt__': [('__lt__', lambda self, other: not (self > other or self == other)), - ('__ge__', lambda self, other: self > other or self == other), - ('__le__', lambda self, other: not self > other)], - '__ge__': [('__le__', lambda self, other: (not self >= other) or self == other), - ('__gt__', lambda self, other: self >= other and not self == other), - ('__lt__', lambda self, other: not self >= other)] - } - roots = set(dir(cls)) & set(convert) - if not roots: - raise ValueError('must define at least one ordering operation: < > <= >=') - root = max(roots) # prefer __lt__ to __le__ to __gt__ to __ge__ - for opname, opfunc in convert[root]: - if opname not in roots: - opfunc.__name__ = opname - opfunc.__doc__ = getattr(int, opname).__doc__ - setattr(cls, opname, opfunc) - return cls - - -@total_ordering -class reverse_order(object): - """Helper for creating key functions. - - This is a wrapper that inverts the sense of the natural - comparisons on the object. - """ - def __init__(self, value): - self.value = value - - def __eq__(self, other): - return other.value == self.value - - def __lt__(self, other): - return other.value < self.value |