From 514455525bf4f8e4e72ccdef7d3f88b26fbc77e5 Mon Sep 17 00:00:00 2001
From: Alon Zakai <alonzakai@gmail.com>
Date: Sat, 18 Jan 2014 10:15:28 -0800
Subject: handle #if !X in preprocessor

---
 src/parseTools.js | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

(limited to 'src/parseTools.js')

diff --git a/src/parseTools.js b/src/parseTools.js
index 1c70a018..e09cd2e2 100644
--- a/src/parseTools.js
+++ b/src/parseTools.js
@@ -46,7 +46,11 @@ function preprocess(text) {
               error('unsupported preprecessor op ' + op);
             }
           } else {
-            showStack.push(ident in this && this[ident] > 0);
+            if (ident[0] === '!') {
+              showStack.push(!(this[ident.substr(1)] > 0));
+            } else {
+              showStack.push(ident in this && this[ident] > 0);
+            }
           }
         } else if (line[2] == 'n') { // include
           var included = read(line.substr(line.indexOf(' ')+1));
-- 
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