/usr/lib/python2.7/dist-packages/ufl/exprcontainers.py is in python-ufl 1.4.0-1.
This file is owned by root:root, with mode 0o644.
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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 | """This module defines special types for representing mapping of expressions to expressions."""
# Copyright (C) 2014 Martin Sandve Alnes
#
# This file is part of UFL.
#
# UFL is free software: you can redistribute it and/or modify
# it under the terms of the GNU Lesser General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# UFL 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 Lesser General Public License for more details.
#
# You should have received a copy of the GNU Lesser General Public License
# along with UFL. If not, see <http://www.gnu.org/licenses/>.
from ufl.log import error, warning
from ufl.assertions import ufl_assert
from ufl.common import EmptyDict
from ufl.expr import Expr
from ufl.operatorbase import Operator, WrapperType
from itertools import izip, chain
#--- Non-tensor types ---
class ExprList(WrapperType):
"List of Expr objects. For internal use, never to be created by end users."
__slots__ = ("_operands",)
def __init__(self, *operands):
WrapperType.__init__(self)
if not all(isinstance(i, Expr) for i in operands):
error("Expecting Expr in ExprList.")
self._operands = operands
def operands(self):
return self._operands
def __getitem__(self, i):
return self._operands[i]
def __len__(self):
return len(self._operands)
def __iter__(self):
return iter(self._operands)
def __str__(self):
return "ExprList(*(%s,))" % ", ".join(str(i) for i in self._operands)
def __repr__(self):
return "ExprList(*%r)" % (self._operands,)
class ExprMapping(WrapperType):
"Mapping of Expr objects. For internal use, never to be created by end users."
__slots__ = ("_operands",)
def __init__(self, *operands):
WrapperType.__init__(self)
if not all(isinstance(e, Expr) for e in operands):
error("Expecting Expr in ExprMapping.")
self._operands = operands
def operands(self):
return self._operands
def domains(self):
# Because this type can act like a terminal if it has no operands, we need to override some recursive operations
if self._operands:
return WrapperType.domains()
else:
return []
#def __getitem__(self, key):
# return self._operands[key]
#def __len__(self):
# return len(self._operands) // 2
#def __iter__(self):
# return iter(self._operands[::2])
def __str__(self):
return "ExprMapping(*%r)" % (self._operands,)
def __repr__(self):
return "ExprMapping(*%r)" % (self._operands,)
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