1 #!/usr/bin/env python 2 3 """ 4 Operator support. 5 6 Copyright (C) 2010, 2013, 2015, 2017, 2019 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 augassign 23 from native import int_add, int_div, int_mod, int_mul, int_pow, int_sub, \ 24 int_and, int_or, int_xor, \ 25 is_int, \ 26 float_add, float_div, float_mul, float_pow, float_sub 27 28 # These functions defer method lookup by wrapping the attribute access in 29 # lambda functions. Thus, the appropriate methods are defined locally, but no 30 # attempt to obtain them is made until the generic function is called. 31 32 # NOTE: The compiler should make it possible for the following functions to call 33 # NOTE: the generic operator implementations with no additional call overhead. 34 35 # Augmented assignment functions. 36 37 def iadd(a, b): 38 if is_int(a) and is_int(b): 39 return int_add(a, b) 40 elif a.__class__ is float and b.__class__ is float: 41 return float_add(a, b) 42 return augassign(a, b, lambda a: a.__iadd__, lambda a: a.__add__, lambda b: b.__radd__) 43 44 def iand_(a, b): 45 if is_int(a) and is_int(b): 46 return int_and(a, b) 47 return augassign(a, b, lambda a: a.__iand__, lambda a: a.__and__, lambda b: b.__rand__) 48 49 def idiv(a, b): 50 if is_int(a) and is_int(b): 51 return int_div(a, b) 52 elif a.__class__ is float and b.__class__ is float: 53 return float_div(a, b) 54 return augassign(a, b, lambda a: a.__idiv__, lambda a: a.__div__, lambda b: b.__rdiv__) 55 56 def ifloordiv(a, b): 57 return augassign(a, b, lambda a: a.__ifloordiv__, lambda a: a.__floordiv__, lambda b: b.__rfloordiv__) 58 59 def ilshift(a, b): 60 return augassign(a, b, lambda a: a.__ilshift__, lambda a: a.__lshift__, lambda b: b.__rlshift__) 61 62 def imod(a, b): 63 if is_int(a) and is_int(b): 64 return int_mod(a, b) 65 return augassign(a, b, lambda a: a.__imod__, lambda a: a.__mod__, lambda b: b.__rmod__) 66 67 def imul(a, b): 68 if is_int(a) and is_int(b): 69 return int_mul(a, b) 70 elif a.__class__ is float and b.__class__ is float: 71 return float_mul(a, b) 72 return augassign(a, b, lambda a: a.__imul__, lambda a: a.__mul__, lambda b: b.__rmul__) 73 74 def ior_(a, b): 75 if is_int(a) and is_int(b): 76 return int_or(a, b) 77 return augassign(a, b, lambda a: a.__ior__, lambda a: a.__or__, lambda b: b.__ror__) 78 79 def ipow(a, b): 80 if is_int(a) and is_int(b): 81 return int_pow(a, b) 82 elif a.__class__ is float and b.__class__ is float: 83 return float_pow(a, b) 84 return augassign(a, b, lambda a: a.__ipow__, lambda a: a.__pow__, lambda b: b.__rpow__) 85 86 def irshift(a, b): 87 return augassign(a, b, lambda a: a.__irshift__, lambda a: a.__rshift__, lambda b: b.__rrshift__) 88 89 def isub(a, b): 90 if is_int(a) and is_int(b): 91 return int_sub(a, b) 92 elif a.__class__ is float and b.__class__ is float: 93 return float_sub(a, b) 94 return augassign(a, b, lambda a: a.__isub__, lambda a: a.__sub__, lambda b: b.__rsub__) 95 96 def ixor(a, b): 97 if is_int(a) and is_int(b): 98 return int_xor(a, b) 99 return augassign(a, b, lambda a: a.__ixor__, lambda a: a.__xor__, lambda b: b.__rxor__) 100 101 # vim: tabstop=4 expandtab shiftwidth=4