From ebdd57a2feee6dbf394d1517fab2daa685cf42d7 Mon Sep 17 00:00:00 2001
From: satyr <murky.satyr@gmail.com>
Date: Sat, 9 Oct 2010 04:00:07 +0900
Subject: [PATCH] rewriter: detectEnd no longer passes `undefined` as token,
 fixing #750

---
 lib/rewriter.js              | 6 +++---
 src/rewriter.coffee          | 4 ++--
 test/test_compilation.coffee | 7 +++++++
 3 files changed, 12 insertions(+), 5 deletions(-)

diff --git a/lib/rewriter.js b/lib/rewriter.js
index 84c32b7d..3c17ccc8 100644
--- a/lib/rewriter.js
+++ b/lib/rewriter.js
@@ -29,10 +29,10 @@
     return true;
   };
   exports.Rewriter.prototype.detectEnd = function(i, condition, action) {
-    var levels, token;
+    var levels, token, tokens;
+    tokens = this.tokens;
     levels = 0;
-    while (true) {
-      token = this.tokens[i];
+    while (token = tokens[i]) {
       if (levels === 0 && condition.call(this, token, i)) {
         return action.call(this, token, i);
       }
diff --git a/src/rewriter.coffee b/src/rewriter.coffee
index 4d1a7c20..e9a78b6b 100644
--- a/src/rewriter.coffee
+++ b/src/rewriter.coffee
@@ -46,9 +46,9 @@ class exports.Rewriter
     true
 
   detectEnd: (i, condition, action) ->
+    {tokens} = this
     levels = 0
-    loop
-      token = @tokens[i]
+    while token = tokens[i]
       return action.call this, token, i     if levels is 0 and condition.call this, token, i
       return action.call this, token, i - 1 if not token or levels < 0
       if include EXPRESSION_START, token[0]
diff --git a/test/test_compilation.coffee b/test/test_compilation.coffee
index e5b4ec49..5c78c3b2 100644
--- a/test/test_compilation.coffee
+++ b/test/test_compilation.coffee
@@ -13,3 +13,10 @@ CoffeeScript.run("resultArray.push i for i of global", {noWrap: on, globals: on,
 ok 'setInterval' in global.resultArray
 
 ok 'passed' is CoffeeScript.eval '"passed"', noWrap: on, globals: on, fileName: 'tests'
+
+#750
+try
+  CoffeeScript.nodes 'f(->'
+  ok no
+catch e
+  eq e.message, 'unclosed CALL_START on line 1'