import functools
import numbers
-import json
import ctypes, ctypes.util
-from pypol import isl
from fractions import Fraction, gcd
+from . import isl, islhelper
+
+
libisl = ctypes.CDLL(ctypes.util.find_library('isl'))
libisl.isl_printer_get_str.restype = ctypes.c_char_p
make dictionary of key:value (letter:integer)
iterate through the dictionary to find matching symbol
return the given integer value
- d = {'a': 1, 'b': 2, 'c': 3, 'd': 4, 'e': 5, 'f': 6, 'g': 7, 'h': 8, 'i': 6, 'j': 10, 'k': 11, 'l': 12, 'm': 13, 'n': 14,
+ d = {'a': 1, 'b': 2, 'c': 3, 'd': 4, 'e': 5, 'f': 6, 'g': 7, 'h': 8, 'i': 6, 'j': 10, 'k': 11, 'l': 12, 'm': 13, 'n': 14,
'o': 15, 'p': 16, 'q': 17, 'r': 18, 's': 19, 't': 20, 'u': 21, 'v': 22, 'w': 23, 'x': 24, 'y': 25, 'z': 26}
if self in d:
num = d.get(self)
@property
def _as_parameter_(self):
return self._ic
-
- #comment out so does not delete itself after being created
+
+ #comment out so does not delete itself after being created
#def __del__(self):
# libisl.isl_ctx_free(self)
def __rsub__(self, other):
return -(self - other)
-
+
@_polymorphic_method
def __mul__(self, other):
if other.isconstant():
if value.denominator != 1:
raise TypeError('non-integer constraint: '
'{} <= 0'.format(constraint))
- self._inequalities.append(constraint)
+ self._inequalities.append(constraint)
self._bset = self.to_isl()
#print(self._bset)
#put this here just to test from isl method
#from_isl = self.from_isl(self._bset)
#print(from_isl)
#rint(self)
- return self._bset
-
-
+ return self._bset
+
+
@property
def equalities(self):
yield from self._equalities
@property
def inequalities(self):
yield from self._inequalities
-
+
@property
def constant(self):
return self._constant
def isconstant(self):
return len(self._coefficients) == 0
-
-
+
+
def isempty(self):
return bool(libisl.isl_basic_set_is_empty(self._bset))
for constraint in self.constraints():
s.update(constraint.symbols)
yield from sorted(s)
-
+
@property
def dimension(self):
return len(self.symbols())
return False
else:
return True
-
+
def __contains__(self, value):
# is the value in the polyhedron?
# test whether every element in other is in the polyhedron
for value in other:
if value == self.constraints():
- return True
+ return True
else:
- return False
+ return False
raise NotImplementedError
def __ge__(self, other):
@classmethod
def fromstring(cls, string):
raise NotImplementedError
-
+
def to_isl(self):
#d = Expression().__dict__ #write expression values to dictionary in form {'_constant': value, '_coefficients': value}
- d = {'_constant': 2, '_coefficients': {'b':1}}
+ d = {'_constant': 2, '_coefficients': {'b':1}}
coeff = d.get('_coefficients')
num_coefficients = len(coeff)
space = libisl.isl_space_set_alloc(Context(), 0, num_coefficients)
if '_constant' in d:
value = d.get('_constant')
ceq = libisl.isl_constraint_set_constant_si(ceq, value)
- if '_coefficients' in d:
+ if '_coefficients' in d:
value_co = d.get('_coefficients')
for co in value_co:
num = value_co.get(co)
- ceq = libisl.isl_constraint_set_coefficient_si(ceq, 3, get_ids(co), num) #use 3 for type isl_dim_set
- bset = libisl.isl_set_add_constraint(bset, ceq)
-
- if self._inequalities:
+ ceq = libisl.isl_constraint_set_coefficient_si(ceq, islhelper.isl_dim_set, get_ids(co), num)
+ bset = libisl.isl_set_add_constraint(bset, ceq)
+
+ if self._inequalities:
if '_constant' in d:
value = d.get('_constant')
- cin = libisl.isl_constraint_set_constant_si(cin, value)
- if '_coefficients' in d:
- value_co = d.get('_coefficients')
+ cin = libisl.isl_constraint_set_constant_si(cin, value)
+ if '_coefficients' in d:
+ value_co = d.get('_coefficients')
for co in value_co:
num = value_co.get(co)
if value_co: #if dictionary not empty add coefficient as to constraint
- cin = libisl.isl_constraint_set_coefficient_si(cin, 3, get_ids(co), num) #use 3 for type isl_dim_set
- bset = libisl.isl_set_add_constraint(bset, cin)
+ cin = libisl.isl_constraint_set_coefficient_si(cin, islhelper.isl_dim_set, get_ids(co), num)
+ bset = libisl.isl_set_add_constraint(bset, cin)
ip = libisl.isl_printer_to_str(Context()) #create string printer
- ip = libisl.isl_printer_print_set(ip, bset) #print set to printer
+ ip = libisl.isl_printer_print_set(ip, bset) #print set to printer
string = libisl.isl_printer_get_str(ip) #get string from printer
string = str(string)
print(string)
return string
-
-
+
+
def from_isl(self, bset):
'''takes basic set in isl form and puts back into python version of polyhedron
isl example code gives idl form as:
"{[i] : exists (a : i = 2a and i >= 10 and i <= 42)}");'''
-
+
poly = 0
return poly