New module coordinates.py

[linpy.git] / pypol / domains.py

diff --git a/pypol/domains.py b/pypol/domains.py
index 45040c8..3ab7d44 100644 (file)
--- a/pypol/domains.py
+++ b/pypol/domains.py
@@ -6,6 +6,7 @@ from fractions import Fraction
 
 from . import islhelper
 from .islhelper import mainctx, libisl, isl_set_basic_sets
+from .coordinates import Point
 from .linexprs import Expression, Symbol
 
 
@@ -268,7 +269,7 @@ class Domain:
         points = []
         for vertex in vertices:
             expr = libisl.isl_vertex_get_expr(vertex)
-            point = {}
+            coordinates = []
             if islhelper.isl_version < '0.13':
                 constraints = islhelper.isl_basic_set_constraints(expr)
                 for constraint in constraints:
@@ -280,7 +281,7 @@ class Domain:
                         coefficient = islhelper.isl_val_to_int(coefficient)
                         if coefficient != 0:
                             coordinate = -Fraction(constant, coefficient)
-                            point[symbol]= coordinate
+                            coordinates.append((symbol, coordinate))
             else:
                 # horrible hack, find a cleaner solution
                 string = islhelper.isl_multi_aff_to_str(expr)
@@ -290,8 +291,8 @@ class Domain:
                     denominator = match.group('den')
                     denominator = 1 if denominator is None else int(denominator)
                     coordinate = Fraction(numerator, denominator)
-                    point[symbol] = coordinate
-            points.append(point)
+                    coordinates.append((symbol, coordinate))
+            points.append(Point(coordinates))
         return points
 
     def points(self):
@@ -302,13 +303,13 @@ class Domain:
         islpoints = islhelper.isl_set_points(islset)
         points = []
         for islpoint in islpoints:
-            point = {}
+            coordinates = {}
             for index, symbol in enumerate(self.symbols):
                 coordinate = libisl.isl_point_get_coordinate_val(islpoint,
                     libisl.isl_dim_set, index)
                 coordinate = islhelper.isl_val_to_int(coordinate)
-                point[symbol] = coordinate
-            points.append(point)
+                coordinates[symbol] = coordinate
+            points.append(Point(coordinates))
         return points
 
     def subs(self, symbol, expression=None):