From 0fbf0e2a770c63d5ceed94fa476e59c78b2bb0ee Mon Sep 17 00:00:00 2001
From: Sebastian McKenzie <sebmck@gmail.com>
Date: Fri, 31 Oct 2014 21:24:54 +1100
Subject: [PATCH] generator: add semicolon helper method, add optional
 printJoin iterator

---
 lib/6to5/generator.js | 29 ++++++++++++++---------------
 1 file changed, 14 insertions(+), 15 deletions(-)

diff --git a/lib/6to5/generator.js b/lib/6to5/generator.js
index 762643b7a8..c03c29cba8 100644
--- a/lib/6to5/generator.js
+++ b/lib/6to5/generator.js
@@ -57,6 +57,10 @@ CodeGenerator.prototype.newline = function () {
   this.buf += "\n";
 };
 
+CodeGenerator.prototype.semicolon = function () {
+  this.buf += ";";
+};
+
 CodeGenerator.prototype.push = function (str) {
   if (this._indent) {
     // we have an indent level and we aren't pushing a newline
@@ -164,33 +168,28 @@ CodeGenerator.prototype.printLeadingComments = function (node) {
   });
 };
 
-CodeGenerator.prototype.printJoin = function (print, nodes, sep, indent) {
-  sep = sep || "\n";
+CodeGenerator.prototype.printJoin = function (print, nodes, sep, opts) {
+  opts = opts || {};
+  sep  = sep || "\n";
 
   var self = this;
   var len  = nodes.length;
 
-  if (indent) self.indent();
+  if (opts.indent) self.indent();
 
   _.each(nodes, function (node, i) {
-    print(node);
+    if (opts.iterator) {
+      opts.iterator(node, i);
+    } else {
+      print(node);
+    }
 
     if (i < len - 1) {
       self.push(sep);
     }
   });
 
-  if (indent) self.dedent();
-};
-
-CodeGenerator.prototype.removeEmptyExpressions = function (nodes) {
-  return nodes.filter(function (node) {
-    if (node.type === "EmptyStatement") {
-      return false;
-    } else {
-      return true;
-    }
-  });
+  if (opts.indent) self.dedent();
 };
 
 CodeGenerator.generators = {