Nate Chandler ce4ba6ce2a [Test] Simplified registration. ...

At the cost of adding an unsafe bitcast implementation detail,
simplified the code involved to register a new FunctionTest when adding
one.

Also simplifies how Swift native `FunctionTest`s are registered with the
C++ registry.

Now, the to-be-executed thin closure for native Swift `FunctionTest`s is
stored under within the swift::test::FunctionTest instance corresponding
to it.  Because its type isn't representable in C++, `void *` is used
instead.  When the FunctionTest is invoked, a thunk is called which
takes the actual test function and bridged versions of the arguments.
That thunk unwraps the arguments, casts the stored function to the
appropriate type, and invokes it.

Thanks to Andrew Trick for the idea.

2023-10-05 18:02:35 -07:00

3.5 KiB

Raw Blame History

View Raw