Update drop_dims, now works with more than 2 dims passed

diff --git a/pypol/domains.py b/pypol/domains.py
index bbb0946..3bcfa24 100644 (file)
--- a/pypol/domains.py
+++ b/pypol/domains.py
@@ -155,7 +155,7 @@ class Domain:
     def drop_dims(self, dims):
         # use to remove certain variables use isl_set_drop_constraints_involving_dims instead?
         from .polyhedra import Polyhedron 
-        n = 1     
+        n = 0 
         dims = list(dims)
         symbols = list(self.symbols)
         islset = self._toislset(self.polyhedra, self.symbols)
@@ -164,13 +164,14 @@ class Domain:
             if dim in symbols:
                 first = symbols.index(dim) 
                 try:
-                    if symbols[first+1] is dims[dim_index+1]: #check if next value in symbols is same as next value in dims
-                        n += 1
-                        islbset = libisl.isl_set_project_out(islset, libisl.isl_dim_set, first, n)  
-                        symbols.__delitem__(first)
+                    for dim in dims:
+                        if symbols[first+1] is dims[dim_index+1]: #check if next value in symbols is same as next value in dims
+                            n += 1
+                        islbset = libisl.isl_set_project_out(islset, libisl.isl_dim_set, first, n) 
+                        symbols.remove(dim)
                 except:
-                    islbset = libisl.isl_set_project_out(islset, libisl.isl_dim_set, first, n)  
-                symbols.__delitem__(first)     
+                    islbset = libisl.isl_set_project_out(islset, libisl.isl_dim_set, first, 1)  
+                    symbols.__delitem__(first)     
             else:
                 islbset = libisl.isl_set_project_out(islset, libisl.isl_dim_set, 0, 0)        
         return Polyhedron._fromislset(islbset, symbols)