Hi everyone, I'm trying to use switch statement to create a file with hex opcodes for given mnemonics. I've code something like

    switch ($opcode)
    {  
        'add' { print "\n The opcode reported was add with hex value 4
+"; }
        'sub' { print "\n The opcode reported was sub with hex value 5
+"; }
    }
[download]

I tried double quotes around add and sub but it didn't help. The error seems to be:

syntax error at ./assembly2hex.pl line 21, near "'add' { "
syntax error at ./assembly2hex.pl line 22, near "'sub' { "
[download]

Complete code until now is something like:

#!/usr/bin/perl

use warnings;
use diagnostics;
use strict;
use Switch;

print ("Provide a file name to be used for source assembly code: ");
my $assemblyFile = <STDIN>;
print ("\n You provided a file : $assemblyFile ");

open ASMFILE, $assemblyFile or die $!;

while (my $instruction = <ASMFILE>)
{
    print ("\n Current instruction is : $instruction ");
    my ($opcode, $operands) = split (/\s+/, $instruction, 2);
    print ("\n Instrction parts right now are $opcode \t $operands ");
    switch ($opcode)
    {  
        'add' { print "\n The opcode reported was add with hex value 4
+"; }
        'sub' { print "\n The opcode reported was sub with hex value 5
+"; }
    }

}
[download]

Any ideas? I've been reading about switch at http://perldoc.perl.org/Switch.html

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