From 2ef9c01ffcd160937ddccc91a6f5e9fa24f22fd4 Mon Sep 17 00:00:00 2001
From: Patrick Walton <pcwalton@mimiga.net>
Date: Fri, 18 Mar 2011 11:49:06 -0700
Subject: rustc: Implement "mutable?". Add a test case and XFAIL it in rustboot
 for now.

---
 src/comp/front/parser.rs | 4 ++++
 1 file changed, 4 insertions(+)

(limited to 'src/comp/front/parser.rs')

diff --git a/src/comp/front/parser.rs b/src/comp/front/parser.rs
index 71f0f2d8..028b8a31 100644
--- a/src/comp/front/parser.rs
+++ b/src/comp/front/parser.rs
@@ -615,6 +615,10 @@ impure fn parse_path(parser p, greed g) -> ast.path {
 impure fn parse_mutability(parser p) -> ast.mutability {
     if (p.peek() == token.MUTABLE) {
         p.bump();
+        if (p.peek() == token.QUES) {
+            p.bump();
+            ret ast.maybe_mut;
+        }
         ret ast.mut;
     }
     ret ast.imm;
-- 
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