Added support of AFArray indexing

Author: edwinsolisf

arrayfire_wrapper/lib/create_and_modify_array/assignment_and_indexing/_indexing.py

@@ -5,8 +5,8 @@
 from typing import Any
 
 from arrayfire_wrapper.lib._broadcast import bcast_var
-from arrayfire_wrapper.lib.create_and_modify_array.manage_array import release_array
-
+from arrayfire_wrapper.lib.create_and_modify_array.manage_array import release_array, retain_array
+from arrayfire_wrapper.defines import AFArray
 
 class _IndexSequence(ctypes.Structure):
     """
@@ -186,7 +186,7 @@ class IndexStructure(ctypes.Structure):
     -----------
 
     idx: key
-         - If of type af.Array, self.idx.arr = idx, self.isSeq = False
+         - If of type AFArray, self.idx.arr = idx, self.isSeq = False
          - If of type af.ParallelRange, self.idx.seq = idx, self.isBatch = True
          - Default:, self.idx.seq = af._IndexSequence(idx)
 
@@ -197,26 +197,21 @@ class IndexStructure(ctypes.Structure):
 
     """
 
-    def __init__(self, idx: Any) -> None:
+    def __init__(self, idx: int | slice | AFArray) -> None:
         self.idx = _IndexUnion()
         self.isBatch = False
         self.isSeq = True
 
-        # BUG cyclic reimport
-        # if isinstance(idx, Array):
-        #     if idx.dtype == af_bool:
-        #         self.idx.arr = everything.where(idx.arr)
-        #     else:
-        #         self.idx.arr = everything.retain_array(idx.arr)
-
-        #     self.isSeq = False
-
-        if isinstance(idx, ParallelRange):
+        if isinstance(idx, int) or isinstance(idx, slice):
+            self.idx.seq = _IndexSequence(idx)
+        elif isinstance(idx, ParallelRange):
             self.idx.seq = idx
             self.isBatch = True
-
+        elif isinstance(idx, AFArray):
+            self.idx.arr = retain_array(idx)
+            self.isSeq = False
         else:
-            self.idx.seq = _IndexSequence(idx)
+            raise IndexError("Invalid type while indexing arrayfire.array")
 
     def __del__(self) -> None:
         if not self.isSeq:
@@ -247,7 +242,7 @@ def __setitem__(self, idx: int, value: IndexStructure) -> None:
         self.idxs[idx] = value
 
 
-def get_indices(key: int | slice | tuple[int | slice, ...]) -> CIndexStructure:  # BUG
+def get_indices(key: int | slice | tuple[int | slice | AFArray, ...] | AFArray) -> CIndexStructure:  # BUG
     indices = CIndexStructure()
 
     if isinstance(key, tuple):