1 #!/usr/bin/env python 2 3 """ 4 Operator support. 5 6 Copyright (C) 2010, 2013, 2015, 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 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 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 # NOTE: The compiler should make it possible for the following functions to call 32 # NOTE: the generic operator implementations with no additional call overhead. 33 34 # Augmented assignment functions. 35 36 def iadd(a, b): 37 if is_int(a) and is_int(b): 38 return int_add(a, b) 39 return augassign(a, b, lambda a: a.__iadd__, lambda a: a.__add__, lambda b: b.__radd__) 40 41 def iand_(a, b): 42 if is_int(a) and is_int(b): 43 return int_and(a, b) 44 return augassign(a, b, lambda a: a.__iand__, lambda a: a.__and__, lambda b: b.__rand__) 45 46 def idiv(a, b): 47 if is_int(a) and is_int(b): 48 return int_div(a, b) 49 return augassign(a, b, lambda a: a.__idiv__, lambda a: a.__div__, lambda b: b.__rdiv__) 50 51 def ifloordiv(a, b): 52 return augassign(a, b, lambda a: a.__ifloordiv__, lambda a: a.__floordiv__, lambda b: b.__rfloordiv__) 53 54 def ilshift(a, b): 55 return augassign(a, b, lambda a: a.__ilshift__, lambda a: a.__lshift__, lambda b: b.__rlshift__) 56 57 def imod(a, b): 58 if is_int(a) and is_int(b): 59 return int_mod(a, b) 60 return augassign(a, b, lambda a: a.__imod__, lambda a: a.__mod__, lambda b: b.__rmod__) 61 62 def imul(a, b): 63 if is_int(a) and is_int(b): 64 return int_mul(a, b) 65 return augassign(a, b, lambda a: a.__imul__, lambda a: a.__mul__, lambda b: b.__rmul__) 66 67 def ior_(a, b): 68 if is_int(a) and is_int(b): 69 return int_or(a, b) 70 return augassign(a, b, lambda a: a.__ior__, lambda a: a.__or__, lambda b: b.__ror__) 71 72 def ipow(a, b): 73 if is_int(a) and is_int(b): 74 return int_pow(a, b) 75 return augassign(a, b, lambda a: a.__ipow__, lambda a: a.__pow__, lambda b: b.__rpow__) 76 77 def irshift(a, b): 78 return augassign(a, b, lambda a: a.__irshift__, lambda a: a.__rshift__, lambda b: b.__rrshift__) 79 80 def isub(a, b): 81 if is_int(a) and is_int(b): 82 return int_sub(a, b) 83 return augassign(a, b, lambda a: a.__isub__, lambda a: a.__sub__, lambda b: b.__rsub__) 84 85 def ixor(a, b): 86 if is_int(a) and is_int(b): 87 return int_xor(a, b) 88 return augassign(a, b, lambda a: a.__ixor__, lambda a: a.__xor__, lambda b: b.__rxor__) 89 90 # vim: tabstop=4 expandtab shiftwidth=4
