Lichen

lib/operator/comparison.py

1022:582d834d392d
14 months ago Paul Boddie Merged changes from the value-replacement branch. value-replacement-for-wrapper
     1 #!/usr/bin/env python     2      3 """     4 Operator support.     5      6 Copyright (C) 2010, 2013, 2015, 2016, 2017,     7               2019 Paul Boddie <paul@boddie.org.uk>     8      9 This program is free software; you can redistribute it and/or modify it under    10 the terms of the GNU General Public License as published by the Free Software    11 Foundation; either version 3 of the License, or (at your option) any later    12 version.    13     14 This program is distributed in the hope that it will be useful, but WITHOUT    15 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS    16 FOR A PARTICULAR PURPOSE.  See the GNU General Public License for more    17 details.    18     19 You should have received a copy of the GNU General Public License along with    20 this program.  If not, see <http://www.gnu.org/licenses/>.    21 """    22     23 from operator.core import binary_op    24 from native import int_eq, int_ge, int_gt, int_le, int_lt, int_ne, is_int, \    25                    float_eq, float_ge, float_gt, float_le, float_lt, float_ne    26     27 # These functions defer method lookup by wrapping the attribute access in    28 # lambda functions. Thus, the appropriate methods are defined locally, but no    29 # attempt to obtain them is made until the generic function is called.    30     31 # Comparison functions.    32     33 def eq(a, b):    34     if is_int(a) and is_int(b):    35         return int_eq(a, b)    36     elif a.__class__ is float and b.__class__ is float:    37         return float_eq(a, b)    38     return binary_op(a, b, lambda a: a.__eq__, lambda b: b.__eq__, False)    39     40 def ge(a, b):    41     if is_int(a) and is_int(b):    42         return int_ge(a, b)    43     elif a.__class__ is float and b.__class__ is float:    44         return float_ge(a, b)    45     return binary_op(a, b, lambda a: a.__ge__, lambda b: b.__le__)    46     47 def gt(a, b):    48     if is_int(a) and is_int(b):    49         return int_gt(a, b)    50     elif a.__class__ is float and b.__class__ is float:    51         return float_gt(a, b)    52     return binary_op(a, b, lambda a: a.__gt__, lambda b: b.__lt__)    53     54 def le(a, b):    55     if is_int(a) and is_int(b):    56         return int_le(a, b)    57     elif a.__class__ is float and b.__class__ is float:    58         return float_le(a, b)    59     return binary_op(a, b, lambda a: a.__le__, lambda b: b.__ge__)    60     61 def lt(a, b):    62     if is_int(a) and is_int(b):    63         return int_lt(a, b)    64     elif a.__class__ is float and b.__class__ is float:    65         return float_lt(a, b)    66     return binary_op(a, b, lambda a: a.__lt__, lambda b: b.__gt__)    67     68 def ne(a, b):    69     if is_int(a) and is_int(b):    70         return int_ne(a, b)    71     elif a.__class__ is float and b.__class__ is float:    72         return float_ne(a, b)    73     return binary_op(a, b, lambda a: a.__ne__, lambda b: b.__ne__, True)    74     75 # vim: tabstop=4 expandtab shiftwidth=4