From 3d0f85d6165cc276eccff7262befb412d810d496 Mon Sep 17 00:00:00 2001
From: Alistair Braidwood <alistair_braidwood@yahoo.co.uk>
Date: Fri, 21 Dec 2012 08:29:44 +0000
Subject: [PATCH] line_loc type for v8 perf

---
 acorn.js | 9 +++++++--
 1 file changed, 7 insertions(+), 2 deletions(-)

diff --git a/acorn.js b/acorn.js
index 1ccd4d51dc..176920400f 100644
--- a/acorn.js
+++ b/acorn.js
@@ -394,13 +394,18 @@
     return match ? match.index + match[0].length : input.length + 1;
   }
 
+  var line_loc_t = function() {
+    this.line = tokCurLine;
+    this.column = tokPos - tokLineStart;
+  }
+
   function curLineLoc() {
     while (tokLineStartNext <= tokPos) {
       ++tokCurLine;
       tokLineStart = tokLineStartNext;
       tokLineStartNext = nextLineStart();
     }
-    return {line: tokCurLine, column: tokPos - tokLineStart};
+    return new line_loc_t();
   }
 
   // Reset the token state. Used at the start of a parse.
@@ -920,7 +925,7 @@
     }
     if (options.locations) {
       node.loc = new node_loc_t();
-      node.loc.start = other.loc.start;//{start: other.loc.start, end: null, source: other.loc.source};
+      node.loc.start = other.loc.start;
     }
     if (options.ranges)
       node.range = [other.range[0], 0];