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#![feature(decl_macro, rustc_attrs)]
#[rustc_macro_transparency = "transparent"]
macro transparent() {
struct Transparent;
let transparent = 0;
}
#[rustc_macro_transparency = "semitransparent"]
macro semitransparent() {
struct SemiTransparent;
let semitransparent = 0;
}
#[rustc_macro_transparency = "opaque"]
macro opaque() {
struct Opaque;
let opaque = 0;
}
fn main() {
transparent!();
semitransparent!();
opaque!();
Transparent; // OK
SemiTransparent; // OK
Opaque; //~ ERROR cannot find value `Opaque` in this scope
transparent; // OK
semitransparent; //~ ERROR expected value, found macro `semitransparent`
opaque; //~ ERROR expected value, found macro `opaque`
}
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