data: remove DDiff

DDiff is not used since the port to libyang 2. Also fix the DNode.diff
return type, it is a DNode now, not a DDiff iterator.

Fixes: 806be4c ("Port to libyang 2")
Signed-off-by: Samuel Gauthier <samuel.gauthier@6wind.com>

Author: samuel-gauthier

libyang/__init__.py

@@ -9,7 +9,6 @@
     DAnydata,
     DAnyxml,
     DContainer,
-    DDiff,
     DLeaf,
     DLeafList,
     DList,
@@ -106,7 +105,6 @@
     "ConfigFalseRemoved",
     "Context",
     "DContainer",
-    "DDiff",
     "DLeaf",
     "DLeafList",
     "DList",

libyang/data.py

@@ -187,37 +187,6 @@ def diff_flags(with_defaults: bool = False) -> int:
     return flags
 
 
-# -------------------------------------------------------------------------------------
-class DDiff:
-    """
-    Data tree diff
-    """
-
-    __slots__ = ("dtype", "first", "second")
-
-    def __init__(self, dtype, first: Optional["DNode"], second: Optional["DNode"]):
-        """
-        :arg dtype:
-            The type of the diff
-        :arg first:
-            The first DNode
-        :arg second:
-            The second DNode
-        """
-        self.dtype = dtype
-        self.first = first
-        self.second = second
-
-    def diff_type(self) -> str:
-        """Get diff type as string"""
-        return hex(self.dtype)
-
-    def __repr__(self) -> str:
-        return "<libyang.data.DDiff {} first={} second={}>".format(
-            self.diff_type(), self.first, self.second
-        )
-
-
 # -------------------------------------------------------------------------------------
 class DNode:
     """
@@ -496,7 +465,7 @@ def diff(
         other: "DNode",
         no_siblings: bool = False,
         with_defaults: bool = False,
-    ) -> Iterator[DDiff]:
+    ) -> "DNode":
         flags = diff_flags(with_defaults=with_defaults)
         node_p = ffi.new("struct lyd_node **")
         if no_siblings: