/usr/share/pyshared/csa/valueset.py is in python-csa 0.1.0-1.1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 | #
# This file is part of the Connection-Set Algebra (CSA).
# Copyright (C) 2010,2011,2012 Mikael Djurfeldt
#
# CSA is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 3 of the License, or
# (at your option) any later version.
#
# CSA is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
#
from csaobject import *
class ValueSet (CSAObject):
def __init__ (self):
CSAObject.__init__ (self, "valueset")
def __neg__ (self):
return GenericValueSet (lambda i, j: - self (i, j))
def __add__ (self, other):
if not callable (other):
return maybeAffine (other, 1.0, self)
elif isinstance (other, (QuotedValueSet, AffineValueSet)):
return other.__add__ (self)
elif isinstance (other, GenericValueSet):
return GenericValueSet (lambda i, j: self (i, j) + other.function (i, j))
else:
return GenericValueSet (lambda i, j: self (i, j) + other (i, j))
def __radd__ (self, other):
return self.__add__ (other)
def __sub__ (self, other):
return self.__add__ (- other)
def __rsub__ (self, other):
return self.__neg__ ().__add__ (other)
def __mul__ (self, other):
if not callable (other):
return maybeAffine (0.0, other, self)
elif isinstance (other, (QuotedValueSet, AffineValueSet)):
return other.__mul__ (self)
elif isinstance (other, GenericValueSet):
return GenericValueSet (lambda i, j: self (i, j) * other.function (i, j))
else:
return GenericValueSet (lambda i, j: self (i, j) * other (i, j))
def __rmul__ (self, other):
return self.__mul__ (other)
class QuotedValueSet (ValueSet):
def __init__ (self, expression):
ValueSet.__init__ (self)
self.expression = expression
def __call__ (self, i, j):
return self.expression
def __neg__ (self):
return QuotedValueSet (- self.expression)
def __add__ (self, other):
if not callable (other):
return QuotedValueSet (self.expression + other)
elif isinstance (other, QuotedValueSet):
return QuotedValueSet (self.expression + other.expression)
elif isinstance (other, AffineValueSet):
return other.__add__ (self)
else:
return maybeAffine (self.expression, 1.0, other)
def __mul__ (self, other):
if not callable (other):
return QuotedValueSet (self.expression * other)
elif isinstance (other, QuotedValueSet):
return QuotedValueSet (self.expression * other.expression)
elif isinstance (other, AffineValueSet):
return other.__mul__ (self)
else:
return maybeAffine (0.0, self.expression, other)
class GenericValueSet (ValueSet):
def __init__ (self, function):
ValueSet.__init__ (self)
self.function = function
def __call__ (self, i, j):
return self.function (i, j)
def __neg__ (self):
return GenericValueSet (lambda i, j: - self.function (i, j))
def __add__ (self, other):
if not callable (other):
return maybeAffine (other, 1.0, self.function)
elif isinstance (other, (QuotedValueSet, AffineValueSet)):
return other.__add__ (self)
elif isinstance (other, GenericValueSet):
return GenericValueSet (lambda i, j: self.function (i, j) + other.function (i, j))
else:
return GenericValueSet (lambda i, j: self.function (i, j) + other (i, j))
def __mul__ (self, other):
if not callable (other):
return maybeAffine (0.0, other, self.function)
elif isinstance (other, (QuotedValueSet, AffineValueSet)):
return other.__mul__ (self)
elif isinstance (other, GenericValueSet):
return GenericValueSet (lambda i, j: self.function (i, j) * other.function (i, j))
else:
return GenericValueSet (lambda i, j: self.function (i, j) * other (i, j))
class AffineValueSet (ValueSet):
def __init__ (self, constant, coefficient, function):
ValueSet.__init__ (self)
self.const = constant
self.coeff = coefficient
self.func = function
def __call__ (self, i, j):
return self.const + self.coeff * self.func (i, j)
def __neg__ (self):
return maybeAffine (- self.const, - self.coeff, self.func)
def __add__ (self, other):
if not callable (other):
return maybeAffine (self.const + other, self.coeff, self.func)
elif isinstance (other, QuotedValueSet):
return maybeAffine (self.const + other.expression,
self.coeff, self.func)
elif isinstance (other, AffineValueSet):
f = lambda i, j: \
self.const * self.func (i, j) \
+ other.const * other.func (i, j)
return maybeAffine (self.const + other.const,
1.0,
f)
def __mul__ (self, other):
if not callable (other):
return maybeAffine (self.const * other,
self.coeff * other,
self.func)
elif isinstance (other, QuotedValueSet):
return maybeAffine (self.const * other.expression,
self.coeff * other.expression,
self.func)
elif isinstance (other, AffineValueSet):
f = lambda i, j: \
other.const * self.coeff * self.func (i, j) \
+ self.const * other.coeff * other.func (i, j) \
+ self.coeff * other.coeff \
* self.func (i, j) * other.func (i, j)
return maybeAffine (self.const * other.const,
1.0,
f)
def maybeAffine (const, coeff, func):
if coeff == 0.0:
return QuotedValueSet (const)
elif const == 0.0 and coeff == 1.0:
return GenericValueSet (func)
else:
return AffineValueSet (const, coeff, func)
|