Allow selective macro import

2015-01-02 12:50:45 -08:00
parent 0816255c80
commit aa69cbde82
19 changed files with 299 additions and 8 deletions
--- a/src/libsyntax/ext/base.rs
+++ b/src/libsyntax/ext/base.rs
@@ -574,8 +574,10 @@ impl<'a> ExtCtxt<'a> {
        if def.export {
            self.exported_macros.push(def.clone());
        }
-        let ext = macro_rules::compile(self, &def);
-        self.syntax_env.insert(def.ident.name, ext);
+        if def.use_locally {
+            let ext = macro_rules::compile(self, &def);
+            self.syntax_env.insert(def.ident.name, ext);
+        }
    }

    /// Emit `msg` attached to `sp`, and stop compilation immediately.