X-Git-Url: https://scm.cri.ensmp.fr/git/linpy.git/blobdiff_plain/9de8ee74599e94260da37ce8349ac04cc3ae89c3..e21e06be0a63f74174e03a53037e91e051c84b79:/pypol/domains.py

diff --git a/pypol/domains.py b/pypol/domains.py
index fdb0ab0..600049c 100644
--- a/pypol/domains.py
+++ b/pypol/domains.py
@@ -260,16 +260,18 @@ class Domain:
     _RE_COORDINATE = re.compile(r'\((?P<num>\-?\d+)\)(/(?P<den>\d+))?')
 
     def vertices(self):
+        #returning list of verticies
+        from .polyhedra import Polyhedron
         islbset = self._toislbasicset(self.equalities, self.inequalities, self.symbols)
         vertices = libisl.isl_basic_set_compute_vertices(islbset);
         vertices = islhelper.isl_vertices_vertices(vertices)
         points = []
         for vertex in vertices:
-            expr = libisl.isl_vertex_get_expr(vertex);
+            expr = libisl.isl_vertex_get_expr(vertex); 
             if islhelper.isl_version < '0.13':
-                string = islhelper.isl_set_to_str(expr)
-                print(string)
-                # to be continued...
+                #pass bset from expr to points to get verticies
+                exp = Polyhedron._fromislbasicset(expr, self.symbols)
+                points.append(exp.points())
             else:
                 # horrible hack, find a cleaner solution
                 string = islhelper.isl_multi_aff_to_str(expr)
@@ -301,6 +303,11 @@ class Domain:
             points.append(point)
         return points
 
+    def subs(self, symbol, expression=None):
+        polyhedra = [polyhedron.subs(symbol, expression)
+            for polyhedron in self.polyhedra]
+        return Domain(*polyhedra)
+
     @classmethod
     def _fromislset(cls, islset, symbols):
         from .polyhedra import Polyhedron
@@ -323,6 +330,7 @@ class Domain:
             self._dimension = len(self._symbols)
             return self
 
+    @classmethod
     def _toislset(cls, polyhedra, symbols):
         polyhedron = polyhedra[0]
         islbset = polyhedron._toislbasicset(polyhedron.equalities,