Add location data to tokens generated by the rewriter.

lib/coffee-script/rewriter.js

@@ -18,6 +18,7 @@
       this.tagPostfixConditionals();
       this.addImplicitBraces();
       this.addImplicitParentheses();
+      this.addLocationDataToGeneratedTokens();
       return this.tokens;
     };
 
@@ -221,6 +222,31 @@
       });
     };
 
+    Rewriter.prototype.addLocationDataToGeneratedTokens = function() {
+      return this.scanTokens(function(token, i, tokens) {
+        var prevToken;
+        if (token.generated && !token.locationData) {
+          if (i > 0) {
+            prevToken = tokens[i - 1];
+            token.locationData = {
+              first_line: prevToken.locationData.last_line,
+              first_column: prevToken.locationData.last_column,
+              last_line: prevToken.locationData.last_line,
+              last_column: prevToken.locationData.last_column
+            };
+          } else {
+            token.locationData = {
+              first_line: 0,
+              first_column: 0,
+              last_line: 0,
+              last_column: 0
+            };
+          }
+        }
+        return 1;
+      });
+    };
+
     Rewriter.prototype.addImplicitIndentation = function() {
       var action, condition, indent, outdent, starter;
       starter = indent = outdent = null;