1 files changed, 52 insertions, 0 deletions
diff --git a/.venv/lib/python3.12/site-packages/anyio/_core/_streams.py b/.venv/lib/python3.12/site-packages/anyio/_core/_streams.py
new file mode 100644
index 00000000..6a9814e5
--- /dev/null
+++ b/.venv/lib/python3.12/site-packages/anyio/_core/_streams.py
@@ -0,0 +1,52 @@
+from __future__ import annotations
+
+import math
+from typing import TypeVar
+from warnings import warn
+
+from ..streams.memory import (
+    MemoryObjectReceiveStream,
+    MemoryObjectSendStream,
+    MemoryObjectStreamState,
+)
+
+T_Item = TypeVar("T_Item")
+
+
+class create_memory_object_stream(
+    tuple[MemoryObjectSendStream[T_Item], MemoryObjectReceiveStream[T_Item]],
+):
+    """
+    Create a memory object stream.
+
+    The stream's item type can be annotated like
+    :func:`create_memory_object_stream[T_Item]`.
+
+    :param max_buffer_size: number of items held in the buffer until ``send()`` starts
+        blocking
+    :param item_type: old way of marking the streams with the right generic type for
+        static typing (does nothing on AnyIO 4)
+
+        .. deprecated:: 4.0
+          Use ``create_memory_object_stream[YourItemType](...)`` instead.
+    :return: a tuple of (send stream, receive stream)
+
+    """
+
+    def __new__(  # type: ignore[misc]
+        cls, max_buffer_size: float = 0, item_type: object = None
+    ) -> tuple[MemoryObjectSendStream[T_Item], MemoryObjectReceiveStream[T_Item]]:
+        if max_buffer_size != math.inf and not isinstance(max_buffer_size, int):
+            raise ValueError("max_buffer_size must be either an integer or math.inf")
+        if max_buffer_size < 0:
+            raise ValueError("max_buffer_size cannot be negative")
+        if item_type is not None:
+            warn(
+                "The item_type argument has been deprecated in AnyIO 4.0. "
+                "Use create_memory_object_stream[YourItemType](...) instead.",
+                DeprecationWarning,
+                stacklevel=2,
+            )
+
+        state = MemoryObjectStreamState[T_Item](max_buffer_size)
+        return (MemoryObjectSendStream(state), MemoryObjectReceiveStream(state))