<html>
    <head>
      <base href="https://bugs.webkit.org/" />
    </head>
    <body><span class="vcard"><a class="email" href="mailto:darin&#64;apple.com" title="Darin Adler &lt;darin&#64;apple.com&gt;"> <span class="fn">Darin Adler</span></a>
</span> changed
              <a class="bz_bug_link 
          bz_status_NEW "
   title="NEW - [JSC] implement String.prototype.padStart() and String.prototype.padEnd() proposal"
   href="https://bugs.webkit.org/show_bug.cgi?id=155795">bug 155795</a>
        <br>
             <table border="1" cellspacing="0" cellpadding="8">
          <tr>
            <th>What</th>
            <th>Removed</th>
            <th>Added</th>
          </tr>

         <tr>
           <td style="text-align:right;">Attachment #274904 Flags</td>
           <td>review?
           </td>
           <td>review-
           </td>
         </tr></table>
      <p>
        <div>
            <b><a class="bz_bug_link 
          bz_status_NEW "
   title="NEW - [JSC] implement String.prototype.padStart() and String.prototype.padEnd() proposal"
   href="https://bugs.webkit.org/show_bug.cgi?id=155795#c15">Comment # 15</a>
              on <a class="bz_bug_link 
          bz_status_NEW "
   title="NEW - [JSC] implement String.prototype.padStart() and String.prototype.padEnd() proposal"
   href="https://bugs.webkit.org/show_bug.cgi?id=155795">bug 155795</a>
              from <span class="vcard"><a class="email" href="mailto:darin&#64;apple.com" title="Darin Adler &lt;darin&#64;apple.com&gt;"> <span class="fn">Darin Adler</span></a>
</span></b>
        <pre>Comment on <span class=""><a href="attachment.cgi?id=274904&amp;action=diff" name="attach_274904" title="Patch">attachment 274904</a> <a href="attachment.cgi?id=274904&amp;action=edit" title="Patch">[details]</a></span>
Patch

View in context: <a href="https://bugs.webkit.org/attachment.cgi?id=274904&amp;action=review">https://bugs.webkit.org/attachment.cgi?id=274904&amp;action=review</a>

<span class="quote">&gt; Source/JavaScriptCore/runtime/StringPrototype.cpp:801
&gt; +        if (!ropeBuilder.append(string))
&gt; +            return throwOutOfMemoryError(&amp;exec), nullptr;</span >

We should use a more conventional two line body here:

    if (!ropeBuilder.append(string)) {
        throwOutOfMemoryError(&amp;exec);
        return nullptr;
    }

<span class="quote">&gt; Source/JavaScriptCore/runtime/StringPrototype.cpp:806
&gt; +        if (!substr || !ropeBuilder.append(substr))
&gt; +            return throwOutOfMemoryError(&amp;exec), nullptr;</span >

Ditto.

<span class="quote">&gt; Source/JavaScriptCore/runtime/StringPrototype.cpp:861
&gt; +enum class StringPaddingLocation {
&gt; +    Start,
&gt; +    End
&gt; +};</span >

I think this reads better on a single line.

<span class="quote">&gt; Source/JavaScriptCore/runtime/StringPrototype.cpp:903
&gt; +        UChar character = filler ? filler-&gt;view(&amp;exec)[0] : ' ';</span >

This should use the unsafeView function for better efficiency rather than the view function.

<span class="quote">&gt; Source/JavaScriptCore/runtime/StringPrototype.cpp:909
&gt; +        filler = repeatStringPattern(exec, fillLength, filler, ropeBuilder);</span >

I think you misunderstood my suggestion. I suggested passing the ropeBuilder in and create a function that would append to it, not so a function that will use it and then call &quot;release&quot;. The point of the optimization is to not do a second release.</pre>
        </div>
      </p>
      <hr>
      <span>You are receiving this mail because:</span>
      
      <ul>
          <li>You are the assignee for the bug.</li>
      </ul>
    </body>
</html>