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Re: Simulate goto

Followups directed to: comp.lang.javascript

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John G Harris wrote:

> Thomas 'PointedEars' Lahn wrote:
>> Tom de Neef wrote:
>>> The error may have more to do with 'continue' than with the label.
>>> Check where you can use a continue statement - I think it is restricted
>>> to for- and while- loops.
>> You are mistaken.  The `continue' statement, like the Labelled Statement
>> is just another /Statement/, and it can be located anywhere in a
>> /Program/:
> 
> Now look at section 12.7 of ECMAScript 262, 5.1 Edition, at the text
> following
>    "A program is considered syntactically incorrect if either of
>     the following is true:"
> which disagrees with you.

No, but it disagrees with the implications of my statement regarding this 
problem.  A `continue' statement *can* be located anywhere in a /Program/.  
However, there are restrictions as to location of the label that may be 
referred by the optional /Identifier/.

AIUI, it should be possible to use an enclosing /Statement/ (like a /Block/ 
statement) and a `break' statement here (section 12.8):

  function testGoto()
  {
    var isFirst = true;
    if (true)
    {
skipPoint:
      window.alert("Using goto\n");
 
      if (isFirst)
      {
        isFirst = false;
        break skipPoint;
        window.alert("This part is skipped");
      }
    }
  }

However, Google V8 3.5.10.9+ in Chromium 15.0.874.121 (Developer Build 
109964 Linux) considers that a syntax error as well (same error message: 
"SyntaxError: Undefined label 'skipPoint'").  Is this a bug?


PointedEars
-- 
When all you know is jQuery, every problem looks $(olvable).

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Thread

Simulate goto Archos <raul.san@sent.com> - 2011-12-27 01:19 -0800
  Re: Simulate goto Archos <raul.san@sent.com> - 2011-12-27 01:50 -0800
    Re: Simulate goto Archos <raul.san@sent.com> - 2011-12-27 02:09 -0800
      Re: Simulate goto Erwin Moller <Since_humans_read_this_I_am_spammed_too_much@spamyourself.com> - 2011-12-27 11:31 +0100
  Re: Simulate goto "Tom de Neef" <tdeneef@qolor.nl> - 2011-12-27 12:12 +0100
    Re: Simulate goto Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2011-12-27 18:27 +0100
      Re: Simulate goto John G Harris <john@nospam.demon.co.uk> - 2011-12-28 16:56 +0000
        Re: Simulate goto Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2011-12-28 19:10 +0100
          Re: Simulate goto Jake Jarvis <pig_in_shoes@yahoo.com> - 2011-12-28 23:18 +0100
            Re: Simulate goto Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2011-12-29 12:18 +0100
              Re: Simulate goto John G Harris <john@nospam.demon.co.uk> - 2011-12-29 16:31 +0000
                Re: Simulate goto Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2011-12-29 17:47 +0100
                Re: Simulate goto John G Harris <john@nospam.demon.co.uk> - 2011-12-30 11:04 +0000
                Re: Simulate goto Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2011-12-30 16:10 +0100
  Re: Simulate goto John G Harris <john@nospam.demon.co.uk> - 2011-12-27 14:41 +0000
  Re: Simulate goto Denis McMahon <denismfmcmahon@gmail.com> - 2011-12-27 15:32 +0000
    Re: Simulate goto Gene Wirchenko <genew@ocis.net> - 2011-12-27 10:12 -0800
      Re: Simulate goto "Evertjan." <exjxw.hannivoort@interxnl.net> - 2011-12-27 19:55 +0000
        Re: Simulate goto Hans-Georg Michna <hans-georgNoEmailPlease@michna.com> - 2011-12-27 21:49 +0100
          Re: Simulate goto Denis McMahon <denismfmcmahon@gmail.com> - 2011-12-27 23:07 +0000
          Re: Simulate goto John G Harris <john@nospam.demon.co.uk> - 2011-12-28 16:28 +0000
            Re: Simulate goto Nomen Nescio <nobody@dizum.com> - 2011-12-28 22:33 +0100
        Re: Simulate goto Gene Wirchenko <genew@ocis.net> - 2011-12-27 13:19 -0800
          Re: Simulate goto "Evertjan." <exjxw.hannivoort@interxnl.net> - 2011-12-27 22:02 +0000
            Re: Simulate goto Tim Streater <timstreater@greenbee.net> - 2011-12-27 22:18 +0000
              Re: Simulate goto Mike Duffy <Use_guestbook_page@website.in.sig> - 2011-12-28 00:23 +0000
                Re: Simulate goto John G Harris <john@nospam.demon.co.uk> - 2011-12-28 16:37 +0000
                Re: Simulate goto Tim Streater <timstreater@greenbee.net> - 2011-12-28 17:44 +0000
                Re: Simulate goto Mike Duffy <Use_guestbook_page@website.in.sig> - 2011-12-29 01:16 +0000
                Re: Simulate goto Gene Wirchenko <genew@ocis.net> - 2011-12-28 17:34 -0800
                Re: Simulate goto "Evertjan." <exjxw.hannivoort@interxnl.net> - 2011-12-29 08:27 +0000
                Re: Simulate goto Dr J R Stockton <reply1152@merlyn.demon.co.uk> - 2011-12-30 20:54 +0000
                Re: Simulate goto Tim Streater <timstreater@greenbee.net> - 2011-12-31 11:55 +0000
            Re: Simulate goto Gene Wirchenko <genew@ocis.net> - 2011-12-27 14:50 -0800

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