Add codegen template

Author: rtpg

src/django_unasyncify/_codegen.py

@@ -0,0 +1,40 @@
+"""
+This file is managed by django-unasyncify and should not be
+directly modified. Future runs of django-unasyncify will
+likely overwrite any changes you make to this file.
+"""
+
+
+def from_codegen(f):
+    """
+    This indicates that the function was gotten from codegen, and
+    should not be directly modified
+    """
+    return f
+
+
+def generate_unasynced(*args, **kwargs):
+    """
+    This indicates we should unasync this function/method
+    """
+
+    def wrapper(f):
+        return f
+
+    # @generate_unasynced()
+    if not args and not kwargs:
+        return wrapper
+
+    # @generate_unasynced
+    if args:
+        assert (
+            len(args) == 1 and len(kwargs) == 0
+        ), "Invalid calling convention for generate_unasynced"
+        return args[0]
+
+    if kwargs:
+        raise NotImplementedError("Handling kwargs...")
+
+
+# this marker gets replaced by False when unasyncifying a function
+IS_ASYNC = True

src/django_unasyncify/scaffolding.py

@@ -0,0 +1,10 @@
+from pathlib import Path
+from shutil import copyfile
+
+
+def ensure_codegen_template(target_location):
+    """
+    Insert the codegen template to where it's needed
+    """
+    codegen_location = Path(__file__).parent / "_codegen.py"
+    copyfile(src=codegen_location, dst=target_location)