Newsgroups: php.internals
Path: news.php.net
Xref: news.php.net php.internals:20903
Mailing-List: contact internals-help@lists.php.net; run by ezmlm
Message-ID: <438DE008.7030000@tgaconnect.com>
Date: Wed, 30 Nov 2005 12:23:20 -0500
Reply-To: tgales@tgaconnect.com
User-Agent: Mozilla Thunderbird 1.0 (Windows/20041206)
MIME-Version: 1.0
To: internals@lists.php.net
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
Content-Transfer-Encoding: 7bit
Subject: GOTO replacement statements
From: tgales@tgaconnect.com (Tim Gales)


I was wondering if it would be worthwhile to consider
replacing the functionality of a 'goto' statement with
two or maybe three statements.

'break_to' 'advance_to' and maybe even 'change_state_to'

while($foo1) as LABEL1 {
	....
	while($foo2) {
		...
		if($var1)
		   break;
		if($var2)
		   break_to LABEL1;
		...
		if($var3)
		   advance_to LABEL2;
		...
	..
}

LABEL2:

'break_to' might make it easier for someone who
has to review/maintain the code to spot it as
a 'goto' replacement to break out of a nested loop.

'advance_to' would hopefully cut down on the number
of bug reports claiming that 'jump' doesn't work
properly (when trying to go backwards)



Regards,

Tim Gales