1 files changed, 3 insertions, 20 deletions
diff --git a/src/libsyntax/config.rs b/src/libsyntax/config.rs
index 2923cc86ba0..54dc95291d6 100644
--- a/src/libsyntax/config.rs
+++ b/src/libsyntax/config.rs
@@ -10,8 +10,8 @@ use crate::attr;
 use crate::ast;
 use crate::edition::Edition;
 use crate::mut_visit::*;
-use crate::parse::{token, ParseSess};
 use crate::ptr::P;
+use crate::sess::ParseSess;
 use crate::symbol::sym;
 use crate::util::map_in_place::MapInPlace;
 
@@ -56,6 +56,7 @@ pub fn features(mut krate: ast::Crate, sess: &ParseSess, edition: Edition,
     (krate, features)
 }
 
+#[macro_export]
 macro_rules! configure {
     ($this:ident, $node:ident) => {
         match $this.configure($node) {
@@ -111,25 +112,7 @@ impl<'a> StripUnconfigured<'a> {
             return vec![];
         }
 
-        let (cfg_predicate, expanded_attrs) = match attr.parse(self.sess, |parser| {
-            parser.expect(&token::OpenDelim(token::Paren))?;
-
-            let cfg_predicate = parser.parse_meta_item()?;
-            parser.expect(&token::Comma)?;
-
-            // Presumably, the majority of the time there will only be one attr.
-            let mut expanded_attrs = Vec::with_capacity(1);
-
-            while !parser.check(&token::CloseDelim(token::Paren)) {
-                let lo = parser.token.span.lo();
-                let item = parser.parse_attr_item()?;
-                expanded_attrs.push((item, parser.prev_span.with_lo(lo)));
-                parser.expect_one_of(&[token::Comma], &[token::CloseDelim(token::Paren)])?;
-            }
-
-            parser.expect(&token::CloseDelim(token::Paren))?;
-            Ok((cfg_predicate, expanded_attrs))
-        }) {
+        let (cfg_predicate, expanded_attrs) = match attr.parse(self.sess, |p| p.parse_cfg_attr()) {
             Ok(result) => result,
             Err(mut e) => {
                 e.emit();