Merge pull request #176 from shi27feng/patch-1

Update storage.py

torch_sparse/storage.py

@@ -34,7 +34,8 @@ class SparseStorage(object):
                  rowptr: Optional[torch.Tensor] = None,
                  col: Optional[torch.Tensor] = None,
                  value: Optional[torch.Tensor] = None,
-                 sparse_sizes: Optional[Tuple[int, int]] = None,
+                 sparse_sizes: Optional[Tuple[Optional[int],
+                                              Optional[int]]] = None,
                  rowcount: Optional[torch.Tensor] = None,
                  colptr: Optional[torch.Tensor] = None,
                  colcount: Optional[torch.Tensor] = None,
@@ -48,26 +49,33 @@ class SparseStorage(object):
         assert col.dim() == 1
         col = col.contiguous()
 
-        if sparse_sizes is None:
+        M: int = 0
+        if sparse_sizes is None or sparse_sizes[0] is None:
             if rowptr is not None:
                 M = rowptr.numel() - 1
             elif row is not None and row.numel() > 0:
-                M = row.max().item() + 1
-            elif row is not None and row.numel() == 0:
-                M = 0
-            else:
-                raise ValueError
+                M = int(row.max()) + 1
+        else:
+            _M = sparse_sizes[0]
+            assert _M is not None
+            M = _M
+            if rowptr is not None:
+                assert rowptr.numel() - 1 == M
+            elif row is not None and row.numel() > 0:
+                assert int(row.max()) < M
+
+        N: int = 0
+        if sparse_sizes is None or sparse_sizes[1] is None:
             if col.numel() > 0:
-                N = col.max().item() + 1
-            else:
-                N = 0
-            sparse_sizes = (int(M), int(N))
+                N = int(col.max()) + 1
         else:
-            assert len(sparse_sizes) == 2
-            if row is not None and row.numel() > 0:
-                assert row.max().item() < sparse_sizes[0]
+            _N = sparse_sizes[1]
+            assert _N is not None
+            N = _N
             if col.numel() > 0:
-                assert col.max().item() < sparse_sizes[1]
+                assert int(col.max()) < N
+
+        sparse_sizes = (M, N)
 
         if row is not None:
             assert row.dtype == torch.long

torch_sparse/tensor.py

@@ -16,7 +16,8 @@ class SparseTensor(object):
                  rowptr: Optional[torch.Tensor] = None,
                  col: Optional[torch.Tensor] = None,
                  value: Optional[torch.Tensor] = None,
-                 sparse_sizes: Optional[Tuple[int, int]] = None,
+                 sparse_sizes: Optional[Tuple[Optional[int],
+                                              Optional[int]]] = None,
                  is_sorted: bool = False):
         self.storage = SparseStorage(row=row, rowptr=rowptr, col=col,
                                      value=value, sparse_sizes=sparse_sizes,
@@ -39,7 +40,8 @@ class SparseTensor(object):
     @classmethod
     def from_edge_index(self, edge_index: torch.Tensor,
                         edge_attr: Optional[torch.Tensor] = None,
-                        sparse_sizes: Optional[Tuple[int, int]] = None,
+                        sparse_sizes: Optional[Tuple[Optional[int],
+                                                     Optional[int]]] = None,
                         is_sorted: bool = False):
         return SparseTensor(row=edge_index[0], rowptr=None, col=edge_index[1],
                             value=edge_attr, sparse_sizes=sparse_sizes,