Trouble Expanding a bus in PERL
 

Hi all,

I am trying to list out a bus as individual names.

For instance - When I come across a section in a file that lists a bus like this:

<busname>[0:2]

I would like to print out this:

<busname>[0]
<busname>[1]
<busname>[2]

Here is what I have - It goes into an endless loop and I can't seem to solve it.
#! /usr/intel/bin/perl -w
my $block = $ARGV[0];
my $RTL_pin = "$block.test.v";
open (RTL, "$RTL_pin") or die "could not open file $RTL_pin\n";
system ("touch newtest2");
open( NEWFILE2, "> newtest2" ) or die "Can't open file: newtest2 $!";

system (" grep -E '[input]|[ouput]|[inout]' $RTL_pin > $RTL_pin.hold");
system (" cp -p $RTL_pin.hold $RTL_pin");

while (<RTL>)
{
chomp;
s/;/ /g;
if ($_ =~ /(.*\s+)\[(\d+):(\d+)\]/)
{
$bn = $1; #busname
$h = $2; #high number
$l = $3; #low number
$i = 0;
# print NEWFILE2 "\n$l\n$h\n$bn\n";
for ($i = $l; $h; $i++)
{
print "$bn[$i]";
}
}
}



Thanks for any help.

Re: Trouble Expanding a bus in PERL
 

Please put your code in [CODE] and [CODE] tags in the future, on any forum.

This loop will terminate when the middle expression evaluates to a false value. You seem to want $i <= $h, not $h. ($h will just return something like 2 or 3 (whatever its value is), every time, and those are true values, causing the loop to run infinitely.)