Move custom type definitions to dedicated file

Author: moomoohk

dpath/segments.py

@@ -4,7 +4,7 @@
 
 from dpath import options
 from dpath.exceptions import InvalidGlob, InvalidKeyName, PathNotFound
-from dpath.util import PathSegment, Creator, Hints
+from dpath.types import PathSegment, Creator, Hints
 
 
 def make_walkable(node) -> Iterator[Tuple[PathSegment, Any]]:

dpath/types.py

@@ -0,0 +1,39 @@
+from enum import IntFlag, auto
+from typing import Union, Any, Callable, Sequence, Tuple, Dict, List, Optional
+
+
+class MergeType(IntFlag):
+    ADDITIVE = auto()
+    """List objects are combined onto one long list (NOT a set). This is the default flag."""
+
+    REPLACE = auto()
+    """Instead of combining list objects, when 2 list objects are at an equal depth of merge, replace the destination 
+    with the source."""
+
+    TYPESAFE = auto()
+    """When 2 keys at equal levels are of different types, raise a TypeError exception. By default, the source 
+    replaces the destination in this situation."""
+
+
+PathSegment = Union[int, str]
+"""Type alias for dict path segments where integers are explicitly casted."""
+
+Filter = Callable[[Any], bool]
+"""Type alias for filter functions.
+
+(Any) -> bool"""
+
+Hints = Sequence[Tuple[PathSegment, type]]
+"""Type alias for creator function hint sequences."""
+
+Creator = Callable[[Union[Dict, List], Sequence[PathSegment], int, Optional[Hints]], None]
+"""Type alias for creator functions.
+
+Example creator function signature:
+
+    def creator(
+        current: Union[Dict, List],
+        segments: Sequence[PathSegment],
+        i: int,
+        hints: Sequence[Tuple[PathSegment, type]] = ()
+    )"""

dpath/util.py

@@ -1,50 +1,13 @@
 from collections.abc import MutableMapping, MutableSequence
-from enum import IntFlag, auto
-from typing import Union, List, Any, Dict, Callable, Sequence, Tuple, Optional
+from typing import Union, List, Any, Dict
 
 from dpath import options, segments
 from dpath.exceptions import InvalidKeyName, PathNotFound
+from dpath.types import PathSegment, Filter, Creator, MergeType
 
 _DEFAULT_SENTINEL = object()
 
 
-class MergeType(IntFlag):
-    ADDITIVE = auto()
-    """List objects are combined onto one long list (NOT a set). This is the default flag."""
-
-    REPLACE = auto()
-    """Instead of combining list objects, when 2 list objects are at an equal depth of merge, replace the destination 
-    with the source."""
-
-    TYPESAFE = auto()
-    """When 2 keys at equal levels are of different types, raise a TypeError exception. By default, the source 
-    replaces the destination in this situation."""
-
-
-PathSegment = Union[int, str]
-"""Type alias for dict path segments where integers are explicitly casted."""
-
-Filter = Callable[[Any], bool]
-"""Type alias for filter functions.
-
-(Any) -> bool"""
-
-Hints = Sequence[Tuple[PathSegment, type]]
-"""Type alias for creator function hint sequences."""
-
-Creator = Callable[[Union[Dict, List], Sequence[PathSegment], int, Optional[Hints]], None]
-"""Type alias for creator functions.
-
-Example creator function signature:
-    
-    def creator(
-        current: Union[Dict, List],
-        segments: Sequence[PathSegment],
-        i: int,
-        hints: Sequence[Tuple[PathSegment, type]] = ()
-    )"""
-
-
 def _split_path(path: str, separator: str) -> Union[List[PathSegment], PathSegment]:
     """
     Given a path and separator, return a tuple of segments. If path is