29 lines
587 B
Rust
29 lines
587 B
Rust
//@ run-pass
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#![feature(macro_metavar_expr)]
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macro_rules! nested {
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( $a:ident ) => {
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macro_rules! $a {
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( $$( $b:ident ),* ) => {
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$$(
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macro_rules! $b {
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( $$$$( $c:ident ),* ) => {
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$$$$(
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fn $c() -> &'static str { stringify!($c) }
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),*
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};
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}
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)*
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};
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}
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};
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}
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fn main() {
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nested!(a);
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a!(b);
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b!(c);
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assert_eq!(c(), "c");
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}
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