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#[doc(hidden)]
#[macro_export]
macro_rules! __msg_send_parse {
// No arguments
{
// Intentionally empty
()
()
($selector:ident $(,)?)
($($error_data:tt)*)
($($data:tt)*)
($out_macro:path)
$($macro_args:tt)*
} => {
$crate::__msg_send_parse! {
($selector)
()
()
($($error_data)*)
($($data)*)
($out_macro)
$($macro_args)*
}
};
// tt-munch remaining `selector: argument` pairs, looking for a pattern
// that ends with `sel: _`.
{
($($selector_output:tt)*)
($($argument_output:tt)*)
()
($($error_data:tt)*)
($($data:tt)*)
($out_macro:path)
$($macro_args:tt)*
} => ({
$out_macro! {
$($macro_args)*
($($data)*)
($($selector_output)*)
($($argument_output)*)
}
});
{
($($selector_output:tt)*)
($($argument_output:tt)*)
($selector:ident: _ $(,)?)
($($error_data:tt)*)
($($data:tt)*)
($out_macro:path)
$($macro_args:tt)*
} => {
$crate::__msg_send_parse! {
($($selector_output)* $selector:)
// Don't pass an argument
($($argument_output)*)
()
// Instead, we change the data to the error data.
($($error_data)*)
($($error_data)*)
($out_macro)
$($macro_args)*
}
};
{
($($selector_output:tt)*)
($($argument_output:tt)*)
($selector:ident : $argument:expr $(, $($rest:tt)*)?)
($($error_data:tt)*)
($($data:tt)*)
($out_macro:path)
$($macro_args:tt)*
} => {
$crate::__msg_send_parse! {
($($selector_output)* $selector:)
($($argument_output)* $argument,)
($($($rest)*)?)
($($error_data)*)
($($data)*)
($out_macro)
$($macro_args)*
}
};
// Handle calls without comma between `selector: argument` pair.
{
// Intentionally empty
()
()
($($selector:ident : $argument:expr)*)
($($error_data:tt)*)
($($data:tt)*)
($out_macro:path)
$($macro_args:tt)*
} => {{
$crate::__missing_comma_between_args!(
($($data)*)
($(
", ",
$crate::__macro_helpers::stringify!($selector),
": ",
$crate::__macro_helpers::stringify!($argument),
)+)
$($macro_args)*
);
$crate::__msg_send_parse! {
()
()
($($selector : $argument),*)
($($error_data)*)
($($data)*)
($out_macro)
$($macro_args)*
}
}};
}
#[doc(hidden)]
#[macro_export]
macro_rules! __missing_comma_between_args {
(
(MsgSendSuper::send_super_message_static)
($($args:tt)*)
($obj:expr)
()
) => {
$crate::__missing_comma_between_args_inner!(
"super", $crate::__macro_helpers::stringify!(($obj)), $($args)*
);
};
(
(MsgSendSuper::send_super_message)
($($args:tt)*)
($obj:expr, $superclass:expr)
()
) => {
$crate::__missing_comma_between_args_inner!(
"super", $crate::__macro_helpers::stringify!(($obj, $superclass)), $($args)*
);
};
(
(MsgSend::send_message)
($($args:tt)*)
($obj:expr)
()
) => {
$crate::__missing_comma_between_args_inner!(
$crate::__macro_helpers::stringify!($obj), $($args)*
);
};
}
#[doc(hidden)]
#[macro_export]
macro_rules! __missing_comma_between_args_inner {
($($args:tt)*) => {{
#[deprecated = $crate::__macro_helpers::concat!(
"using msg_send! without a comma between arguments is ",
"technically not valid macro syntax, and may break in a future ",
"version of Rust. You should use the following instead:\n",
"msg_send![", $($args)* "]"
)]
#[inline]
fn __missing_comma() {}
__missing_comma();
}};
}