Include line info in compiler thrown exceptions

Fixes #636

1 files changed, 14 insertions, 2 deletions

diff --git a/lib/handlebars/exception.js b/lib/handlebars/exception.js
index 6de9cfd..8c5c2f6 100644
--- a/lib/handlebars/exception.js
+++ b/lib/handlebars/exception.js
@@ -1,13 +1,25 @@
 
 var errorProps = ['description', 'fileName', 'lineNumber', 'message', 'name', 'number', 'stack'];
 
-function Exception(/* message */) {
-  var tmp = Error.prototype.constructor.apply(this, arguments);
+function Exception(message, node) {
+  var line;
+  if (node && node.firstLine) {
+    line = node.firstLine;
+
+    message += ' - ' + line + ':' + node.firstColumn;
+  }
+
+  var tmp = Error.prototype.constructor.call(this, message);
 
   // Unfortunately errors are not enumerable in Chrome (at least), so `for prop in tmp` doesn't work.
   for (var idx = 0; idx < errorProps.length; idx++) {
     this[errorProps[idx]] = tmp[errorProps[idx]];
   }
+
+  if (line) {
+    this.lineNumber = line;
+    this.column = node.firstColumn;
+  }
 }
 
 Exception.prototype = new Error();