hygiene: Implement transparent marks

1 files changed, 53 insertions, 0 deletions

diff --git a/src/test/ui/hygiene/transparent-basic.rs b/src/test/ui/hygiene/transparent-basic.rs
new file mode 100644
index 00000000000..81ece1f11bc
--- /dev/null
+++ b/src/test/ui/hygiene/transparent-basic.rs
@@ -0,0 +1,53 @@
+// Copyright 2018 The Rust Project Developers. See the COPYRIGHT
+// file at the top-level directory of this distribution and at
+// http://rust-lang.org/COPYRIGHT.
+//
+// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
+// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
+// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
+// option. This file may not be copied, modified, or distributed
+// except according to those terms.
+
+// compile-pass
+// aux-build:transparent-basic.rs
+
+#![feature(decl_macro, rustc_attrs)]
+
+extern crate transparent_basic;
+
+#[rustc_transparent_macro]
+macro binding() {
+    let x = 10;
+}
+
+#[rustc_transparent_macro]
+macro label() {
+    break 'label
+}
+
+macro_rules! legacy {
+    () => {
+        binding!();
+        let y = x;
+    }
+}
+
+fn legacy_interaction1() {
+    legacy!();
+}
+
+struct S;
+
+fn check_dollar_crate() {
+    // `$crate::S` inside the macro resolves to `S` from this crate.
+    transparent_basic::dollar_crate!();
+}
+
+fn main() {
+    binding!();
+    let y = x;
+
+    'label: loop {
+        label!();
+    }
+}