1 #!/usr/bin/env python 2 3 """ 4 Operator support. 5 6 Copyright (C) 2010, 2013, 2015 Paul Boddie <paul@boddie.org.uk> 7 8 This program is free software; you can redistribute it and/or modify it under 9 the terms of the GNU General Public License as published by the Free Software 10 Foundation; either version 3 of the License, or (at your option) any later 11 version. 12 13 This program is distributed in the hope that it will be useful, but WITHOUT 14 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS 15 FOR A PARTICULAR PURPOSE. See the GNU General Public License for more 16 details. 17 18 You should have received a copy of the GNU General Public License along with 19 this program. If not, see <http://www.gnu.org/licenses/>. 20 """ 21 22 from operator.core import binary_op 23 24 # These functions defer method lookup by wrapping the attribute access in 25 # lambda functions. Thus, the appropriate methods are defined locally, but no 26 # attempt to obtain them is made until the generic function is called. 27 28 # NOTE: The compiler should make it possible for the following functions to call 29 # NOTE: the generic operator implementations with no additional call overhead. 30 31 # Comparison functions. 32 33 def eq(a, b): 34 return binary_op(a, b, lambda a: a.__eq__, lambda b: b.__eq__) 35 36 def ge(a, b): 37 return binary_op(a, b, lambda a: a.__ge__, lambda b: b.__le__) 38 39 def gt(a, b): 40 return binary_op(a, b, lambda a: a.__gt__, lambda b: b.__lt__) 41 42 def le(a, b): 43 return binary_op(a, b, lambda a: a.__le__, lambda b: b.__ge__) 44 45 def lt(a, b): 46 return binary_op(a, b, lambda a: a.__lt__, lambda b: b.__gt__) 47 48 def ne(a, b): 49 return binary_op(a, b, lambda a: a.__ne__, lambda b: b.__ne__) 50 51 # vim: tabstop=4 expandtab shiftwidth=4
