paul@6 | 1 | #!/usr/bin/env python |
paul@6 | 2 | |
paul@6 | 3 | """ |
paul@6 | 4 | Operator support. |
paul@6 | 5 | |
paul@873 | 6 | Copyright (C) 2010, 2013, 2015, 2016, 2017, |
paul@873 | 7 | 2019 Paul Boddie <paul@boddie.org.uk> |
paul@6 | 8 | |
paul@6 | 9 | This program is free software; you can redistribute it and/or modify it under |
paul@6 | 10 | the terms of the GNU General Public License as published by the Free Software |
paul@6 | 11 | Foundation; either version 3 of the License, or (at your option) any later |
paul@6 | 12 | version. |
paul@6 | 13 | |
paul@6 | 14 | This program is distributed in the hope that it will be useful, but WITHOUT |
paul@6 | 15 | ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS |
paul@6 | 16 | FOR A PARTICULAR PURPOSE. See the GNU General Public License for more |
paul@6 | 17 | details. |
paul@6 | 18 | |
paul@6 | 19 | You should have received a copy of the GNU General Public License along with |
paul@6 | 20 | this program. If not, see <http://www.gnu.org/licenses/>. |
paul@6 | 21 | """ |
paul@6 | 22 | |
paul@6 | 23 | from operator.core import binary_op |
paul@873 | 24 | from native import int_eq, int_ge, int_gt, int_le, int_lt, int_ne, is_int, \ |
paul@873 | 25 | float_eq, float_ge, float_gt, float_le, float_lt, float_ne |
paul@6 | 26 | |
paul@6 | 27 | # These functions defer method lookup by wrapping the attribute access in |
paul@6 | 28 | # lambda functions. Thus, the appropriate methods are defined locally, but no |
paul@6 | 29 | # attempt to obtain them is made until the generic function is called. |
paul@6 | 30 | |
paul@6 | 31 | # Comparison functions. |
paul@6 | 32 | |
paul@6 | 33 | def eq(a, b): |
paul@762 | 34 | if is_int(a) and is_int(b): |
paul@762 | 35 | return int_eq(a, b) |
paul@873 | 36 | elif a.__class__ is float and b.__class__ is float: |
paul@873 | 37 | return float_eq(a, b) |
paul@278 | 38 | return binary_op(a, b, lambda a: a.__eq__, lambda b: b.__eq__, False) |
paul@6 | 39 | |
paul@6 | 40 | def ge(a, b): |
paul@762 | 41 | if is_int(a) and is_int(b): |
paul@762 | 42 | return int_ge(a, b) |
paul@873 | 43 | elif a.__class__ is float and b.__class__ is float: |
paul@873 | 44 | return float_ge(a, b) |
paul@6 | 45 | return binary_op(a, b, lambda a: a.__ge__, lambda b: b.__le__) |
paul@6 | 46 | |
paul@6 | 47 | def gt(a, b): |
paul@762 | 48 | if is_int(a) and is_int(b): |
paul@762 | 49 | return int_gt(a, b) |
paul@873 | 50 | elif a.__class__ is float and b.__class__ is float: |
paul@873 | 51 | return float_gt(a, b) |
paul@6 | 52 | return binary_op(a, b, lambda a: a.__gt__, lambda b: b.__lt__) |
paul@6 | 53 | |
paul@6 | 54 | def le(a, b): |
paul@762 | 55 | if is_int(a) and is_int(b): |
paul@762 | 56 | return int_le(a, b) |
paul@873 | 57 | elif a.__class__ is float and b.__class__ is float: |
paul@873 | 58 | return float_le(a, b) |
paul@6 | 59 | return binary_op(a, b, lambda a: a.__le__, lambda b: b.__ge__) |
paul@6 | 60 | |
paul@6 | 61 | def lt(a, b): |
paul@762 | 62 | if is_int(a) and is_int(b): |
paul@762 | 63 | return int_lt(a, b) |
paul@873 | 64 | elif a.__class__ is float and b.__class__ is float: |
paul@873 | 65 | return float_lt(a, b) |
paul@6 | 66 | return binary_op(a, b, lambda a: a.__lt__, lambda b: b.__gt__) |
paul@6 | 67 | |
paul@6 | 68 | def ne(a, b): |
paul@762 | 69 | if is_int(a) and is_int(b): |
paul@762 | 70 | return int_ne(a, b) |
paul@873 | 71 | elif a.__class__ is float and b.__class__ is float: |
paul@873 | 72 | return float_ne(a, b) |
paul@278 | 73 | return binary_op(a, b, lambda a: a.__ne__, lambda b: b.__ne__, True) |
paul@6 | 74 | |
paul@6 | 75 | # vim: tabstop=4 expandtab shiftwidth=4 |