1 #!/usr/bin/env python 2 3 """ 4 Operator support. 5 6 Copyright (C) 2010, 2013, 2015, 2016, 2017 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 from native import int_eq, int_ge, int_gt, int_le, int_lt, int_ne, is_int 24 25 # These functions defer method lookup by wrapping the attribute access in 26 # lambda functions. Thus, the appropriate methods are defined locally, but no 27 # attempt to obtain them is made until the generic function is called. 28 29 # Comparison functions. 30 31 def eq(a, b): 32 if is_int(a) and is_int(b): 33 return int_eq(a, b) 34 return binary_op(a, b, lambda a: a.__eq__, lambda b: b.__eq__, False) 35 36 def ge(a, b): 37 if is_int(a) and is_int(b): 38 return int_ge(a, b) 39 return binary_op(a, b, lambda a: a.__ge__, lambda b: b.__le__) 40 41 def gt(a, b): 42 if is_int(a) and is_int(b): 43 return int_gt(a, b) 44 return binary_op(a, b, lambda a: a.__gt__, lambda b: b.__lt__) 45 46 def le(a, b): 47 if is_int(a) and is_int(b): 48 return int_le(a, b) 49 return binary_op(a, b, lambda a: a.__le__, lambda b: b.__ge__) 50 51 def lt(a, b): 52 if is_int(a) and is_int(b): 53 return int_lt(a, b) 54 return binary_op(a, b, lambda a: a.__lt__, lambda b: b.__gt__) 55 56 def ne(a, b): 57 if is_int(a) and is_int(b): 58 return int_ne(a, b) 59 return binary_op(a, b, lambda a: a.__ne__, lambda b: b.__ne__, True) 60 61 # vim: tabstop=4 expandtab shiftwidth=4