empty generator *function*

Co-authored-by: Alex Waygood <[email protected]>

Author: ikonst

mypy/checker.py

@@ -1245,7 +1245,7 @@ def check_func_def(
                     # have no good way of doing this.
                     #
                     # TODO: Find a way of working around this limitation
-                    if _is_empty_generator(item) or len(expanded) >= 2:
+                    if _is_empty_generator_function(item) or len(expanded) >= 2:
                         self.binder.suppress_unreachable_warnings()
                     self.accept(item.body)
                 unreachable = self.binder.is_unreachable()
@@ -6966,7 +6966,7 @@ def is_literal_not_implemented(n: Expression) -> bool:
     return isinstance(n, NameExpr) and n.fullname == "builtins.NotImplemented"
 
 
-def _is_empty_generator(func: FuncItem) -> bool:
+def _is_empty_generator_function(func: FuncItem) -> bool:
     """
     Checks whether a function's body is 'return; yield' (the yield being added only
     to promote the function into a generator).

test-data/unit/check-unreachable-code.test

@@ -1447,15 +1447,15 @@ def f() -> None:
     x = 0 # This should not be reported as unreachable
 [builtins fixtures/exception.pyi]
 
-[case testIntentionallyEmptyGenerator]
+[case testIntentionallyEmptyGeneratorFunction]
 # flags: --warn-unreachable
 from typing import Generator
 
 def f() -> Generator[None, None, None]:
     return
     yield
 
-[case testIntentionallyEmptyGenerator_None]
+[case testIntentionallyEmptyGeneratorFunction_None]
 # flags: --warn-unreachable
 from typing import Generator