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//@ run-pass
macro_rules! myfn {
( $f:ident, ( $( $x:ident ),* ), $body:block ) => (
fn $f( $( $x : isize),* ) -> isize $body
)
}
myfn!(add, (a,b), { return a+b; } );
pub fn main() {
macro_rules! mylet {
($x:ident, $val:expr) => (
let $x = $val;
)
}
mylet!(y, 8*2);
assert_eq!(y, 16);
myfn!(mult, (a,b), { a*b } );
assert_eq!(mult(2, add(4,4)), 16);
macro_rules! actually_an_expr_macro {
() => ( 16 )
}
assert_eq!({ actually_an_expr_macro!() }, 16);
}
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