src/test/ui/hygiene/generate-mod.rs

   1 // This is an equivalent of issue #50504, but for declarative macros.
   2
   3 #![feature(decl_macro, rustc_attrs)]
   4
   5 macro genmod($FromOutside: ident, $Outer: ident) {
   6     type A = $FromOutside;
   7     struct $Outer;
   8     mod inner {
   9         type A = $FromOutside; // `FromOutside` shouldn't be available from here
  10         type Inner = $Outer; // `Outer` shouldn't be available from here
  11     }
  12 }
  13
  14 #[rustc_macro_transparency = "transparent"]
  15 macro genmod_transparent() {
  16     type A = FromOutside;
  17     struct Outer;
  18     mod inner {
  19         type A = FromOutside; //~ ERROR cannot find type `FromOutside` in this scope
  20         type Inner = Outer; //~ ERROR cannot find type `Outer` in this scope
  21     }
  22 }
  23
  24 macro_rules! genmod_legacy { () => {
  25     type A = FromOutside;
  26     struct Outer;
  27     mod inner {
  28         type A = FromOutside; //~ ERROR cannot find type `FromOutside` in this scope
  29         type Inner = Outer; //~ ERROR cannot find type `Outer` in this scope
  30     }
  31 }}
  32
  33 fn check() {
  34     struct FromOutside;
  35     genmod!(FromOutside, Outer); //~ ERROR cannot find type `FromOutside` in this scope
  36                                  //~| ERROR cannot find type `Outer` in this scope
  37 }
  38
  39 fn check_transparent() {
  40     struct FromOutside;
  41     genmod_transparent!();
  42 }
  43
  44 fn check_legacy() {
  45     struct FromOutside;
  46     genmod_legacy!();
  47 }
  48
  49 fn main() {}