From 44e4b2d63aef1e6cb572acfa327ea2c3a36083e8 Mon Sep 17 00:00:00 2001
From: Graydon Hoare <graydon@mozilla.com>
Date: Mon, 4 Oct 2010 15:55:12 -0700
Subject: Teach rustc about phi nodes, block relationships. Translate if- and
 block-expressions.

---
 src/comp/util/common.rs | 8 ++++++++
 1 file changed, 8 insertions(+)

(limited to 'src/comp/util/common.rs')

diff --git a/src/comp/util/common.rs b/src/comp/util/common.rs
index 7456a8c8..7b0ffd5b 100644
--- a/src/comp/util/common.rs
+++ b/src/comp/util/common.rs
@@ -4,6 +4,14 @@ import std._int;
 type pos = rec(uint line, uint col);
 type span = rec(str filename, pos lo, pos hi);
 
+// FIXME: import std.util.option and use it here.
+// import std.util.option;
+
+tag option[T] {
+  none;
+  some(T);
+}
+
 tag ty_mach {
     ty_i8;
     ty_i16;
-- 
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