From 7ab4487020f52cf3238ecc94957d6420d16f3e69 Mon Sep 17 00:00:00 2001
From: Nicolas Stepien <stepien.nicolas@gmail.com>
Date: Tue, 6 Mar 2012 23:21:27 +0100
Subject: [PATCH] Main.preParser performance optimization. Use
 getElementsByClassName for "quotelink" and "backlink". querySelectorAll was
 slower, and Array.prototype.slice was an overkill. This speeds up the
 preParser by about 35%.

---
 4chan_x.user.js | 22 ++++++++++++++++------
 script.coffee   | 12 ++++++++----
 2 files changed, 24 insertions(+), 10 deletions(-)

diff --git a/4chan_x.user.js b/4chan_x.user.js
index 8fb3c2153..9fdfa2328 100644
--- a/4chan_x.user.js
+++ b/4chan_x.user.js
@@ -3163,14 +3163,19 @@
       return g.callbacks.push(this.node);
     },
     node: function(post) {
-      var quote, _i, _len, _ref;
-      _ref = post.quotes.concat(post.backlinks);
+      var quote, _i, _j, _len, _len2, _ref, _ref2;
+      _ref = post.quotes;
       for (_i = 0, _len = _ref.length; _i < _len; _i++) {
         quote = _ref[_i];
         if (!quote.hash) continue;
         quote.removeAttribute('onclick');
         $.on(quote, 'click', QuoteInline.toggle);
       }
+      _ref2 = post.backlinks;
+      for (_j = 0, _len2 = _ref2.length; _j < _len2; _j++) {
+        quote = _ref2[_j];
+        $.on(quote, 'click', QuoteInline.toggle);
+      }
     },
     toggle: function(e) {
       var id;
@@ -3289,12 +3294,17 @@
       return g.callbacks.push(this.node);
     },
     node: function(post) {
-      var quote, _i, _len, _ref;
-      _ref = post.quotes.concat(post.backlinks);
+      var quote, _i, _j, _len, _len2, _ref, _ref2;
+      _ref = post.quotes;
       for (_i = 0, _len = _ref.length; _i < _len; _i++) {
         quote = _ref[_i];
         if (quote.hash) $.on(quote, 'mouseover', QuotePreview.mouseover);
       }
+      _ref2 = post.backlinks;
+      for (_j = 0, _len2 = _ref2.length; _j < _len2; _j++) {
+        quote = _ref2[_j];
+        $.on(quote, 'mouseover', QuotePreview.mouseover);
+      }
     },
     mouseover: function(e) {
       var el, id, qp, quote, replyID, threadID, _i, _len, _ref;
@@ -3988,8 +3998,8 @@
         isInlined: /\binline\b/.test(klass),
         filesize: $('.filesize', node),
         img: $('img[md5]', node),
-        quotes: $$('.quotelink', node),
-        backlinks: $$('.backlink', node)
+        quotes: node.getElementsByClassName('quotelink'),
+        backlinks: node.getElementsByClassName('backlink')
       };
     },
     node: function(nodes, notify) {
diff --git a/script.coffee b/script.coffee
index 89bba420a..cae6ca284 100644
--- a/script.coffee
+++ b/script.coffee
@@ -2620,10 +2620,12 @@ QuoteInline =
   init: ->
     g.callbacks.push @node
   node: (post) ->
-    for quote in post.quotes.concat post.backlinks
+    for quote in post.quotes
       continue unless quote.hash
       quote.removeAttribute 'onclick'
       $.on quote, 'click', QuoteInline.toggle
+    for quote in post.backlinks
+      $.on quote, 'click', QuoteInline.toggle
     return
   toggle: (e) ->
     return if e.shiftKey or e.altKey or e.ctrlKey or e.metaKey or e.button isnt 0
@@ -2712,8 +2714,10 @@ QuotePreview =
   init: ->
     g.callbacks.push @node
   node: (post) ->
-    for quote in post.quotes.concat post.backlinks
+    for quote in post.quotes
       $.on quote, 'mouseover', QuotePreview.mouseover if quote.hash
+    for quote in post.backlinks
+      $.on quote, 'mouseover', QuotePreview.mouseover
     return
   mouseover: (e) ->
     return if /\binlined\b/.test @className
@@ -3324,8 +3328,8 @@ Main =
     isInlined: /\binline\b/.test klass
     filesize:  $ '.filesize',   node
     img:       $ 'img[md5]',    node
-    quotes:    $$ '.quotelink', node
-    backlinks: $$ '.backlink',  node
+    quotes:    node.getElementsByClassName 'quotelink'
+    backlinks: node.getElementsByClassName 'backlink'
   node: (nodes, notify) ->
     for callback in g.callbacks
       try