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#![feature(macro_metavar_expr_concat)]
macro_rules! idents_01 {
($rhs:ident) => {
let ${concat(abc, $rhs)}: () = ();
//~^ ERROR `${concat(..)}` currently does not support raw identifiers
};
}
macro_rules! idents_10 {
($lhs:ident) => {
let ${concat($lhs, abc)}: () = ();
//~^ ERROR `${concat(..)}` currently does not support raw identifiers
};
}
macro_rules! idents_11 {
($lhs:ident, $rhs:ident) => {
let ${concat($lhs, $rhs)}: () = ();
//~^ ERROR `${concat(..)}` currently does not support raw identifiers
//~| ERROR `${concat(..)}` currently does not support raw identifiers
//~| ERROR `${concat(..)}` currently does not support raw identifiers
};
}
macro_rules! no_params {
() => {
let ${concat(r#abc, abc)}: () = ();
//~^ ERROR `${concat(..)}` currently does not support raw identifiers
//~| ERROR expected pattern, found `$`
let ${concat(abc, r#abc)}: () = ();
//~^ ERROR `${concat(..)}` currently does not support raw identifiers
let ${concat(r#abc, r#abc)}: () = ();
//~^ ERROR `${concat(..)}` currently does not support raw identifiers
};
}
macro_rules! tts_01 {
($rhs:tt) => {
let ${concat(abc, $rhs)}: () = ();
//~^ ERROR `${concat(..)}` currently does not support raw identifiers
};
}
macro_rules! tts_10 {
($lhs:tt) => {
let ${concat($lhs, abc)}: () = ();
//~^ ERROR `${concat(..)}` currently does not support raw identifiers
};
}
macro_rules! tts_11 {
($lhs:tt, $rhs:tt) => {
let ${concat($lhs, $rhs)}: () = ();
//~^ ERROR `${concat(..)}` currently does not support raw identifiers
//~| ERROR `${concat(..)}` currently does not support raw identifiers
//~| ERROR `${concat(..)}` currently does not support raw identifiers
};
}
fn main() {
idents_01!(r#_c);
idents_10!(r#_c);
idents_11!(r#_c, d);
idents_11!(_e, r#f);
idents_11!(r#_g, r#h);
tts_01!(r#_c);
tts_10!(r#_c);
tts_11!(r#_c, d);
tts_11!(_e, r#f);
tts_11!(r#_g, r#h);
no_params!();
}
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