private static void ValidateSetMessageSendPendingExceptionImpl(MessageSendFunction msgSend)
{
if (!LibObjC.SupportedOnPlatform(msgSend))
{
return;
}
IntPtr func = msgSend switch
{
MessageSendFunction.MsgSend => (IntPtr)(delegate * unmanaged <IntPtr, IntPtr, IntPtr>) & MsgSend,
MessageSendFunction.MsgSendFpret => (IntPtr)(delegate * unmanaged <IntPtr, IntPtr, IntPtr>) & MsgSendFpret,
MessageSendFunction.MsgSendStret => (IntPtr)(delegate * unmanaged <IntPtr *, IntPtr, IntPtr, void>) & MsgSendStret,
MessageSendFunction.MsgSendSuper => (IntPtr)(delegate * unmanaged <IntPtr, IntPtr, IntPtr>) & MsgSendSuper,
MessageSendFunction.MsgSendSuperStret => (IntPtr)(delegate * unmanaged <IntPtr *, IntPtr, IntPtr, void>) & MsgSendSuperStret,
_ => throw new Exception($"Unknown {nameof(MessageSendFunction)}"),
};
// Override message send function
//
// We are using the overriding mechanism to enable validating in the Libraries test suite.
// Technically any Objective-C code that is entered via msgSend could call the managed SetMessageSendPendingException()
// and it would be thrown when returning from the P/Invoke. This approach avoids us having to
// create a pure Objective-C library for testing this behavior.
ObjectiveCMarshal.SetMessageSendCallback(msgSend, func);
// Call message send function through P/Invoke
IntPtr inst = IntPtr.Zero;
IntPtr sel = IntPtr.Zero;
Exception ex = Assert.Throws <PendingException>(() => LibObjC.CallPInvoke(msgSend, inst, sel));
Assert.Equal(msgSend.ToString(), ex.Message);
}
public static IntPtr CallPInvoke(MessageSendFunction msgSend, IntPtr inst, IntPtr sel)
{
switch (msgSend)
{
case MessageSendFunction.MsgSend:
return(LibObjC.objc_msgSend(inst, sel));
case MessageSendFunction.MsgSendFpret:
return(LibObjC.objc_msgSend_fpret(inst, sel));
case MessageSendFunction.MsgSendStret:
{
IntPtr ret;
LibObjC.objc_msgSend_stret(out ret, inst, sel);
return(ret);
}
case MessageSendFunction.MsgSendSuper:
return(LibObjC.objc_msgSendSuper(inst, sel));
case MessageSendFunction.MsgSendSuperStret:
{
IntPtr ret;
LibObjC.objc_msgSendSuper_stret(out ret, inst, sel);
return(ret);
}
default:
throw new ArgumentException($"Unknown {nameof(MessageSendFunction)}: {msgSend}");
}
}
