Initial commit of OpenSPARC T2 architecture model.

[OpenSPARC-T2-SAM] / sam-t2 / devtools / amd64 / lib / perl5 / 5.8.8 / assert.pl

# assert.pl
# tchrist@convex.com (Tom Christiansen)
# 
# Usage:
# 
#     &assert('@x > @y');
#     &assert('$var > 10', $var, $othervar, @various_info);
# 
# That is, if the first expression evals false, we blow up.  The
# rest of the args, if any, are nice to know because they will
# be printed out by &panic, which is just the stack-backtrace
# routine shamelessly borrowed from the perl debugger.

sub assert {
   &panic("ASSERTION BOTCHED: $_[$[]",$@) unless eval $_[$[];
} 

sub panic {
   package DB;

   select(STDERR);

   print "\npanic: @_\n";

   exit 1 if $] <= 4.003;  # caller broken

   # stack traceback gratefully borrowed from perl debugger

   local $_;
   my $i;
   my ($p,$f,$l,$s,$h,$a,@a,@frames);
   for ($i = 0; ($p,$f,$l,$s,$h,$w) = caller($i); $i++) {
       @a = @args;
       for (@a) {
           if (/^StB\000/ && length($_) == length($_main{'_main'})) {
               $_ = sprintf("%s",$_);
           }
           else {
               s/'/\\'/g;
               s/([^\0]*)/'$1'/ unless /^-?[\d.]+$/;
               s/([\200-\377])/sprintf("M-%c",ord($1)&0177)/eg;
               s/([\0-\37\177])/sprintf("^%c",ord($1)^64)/eg;
           }
       }
       $w = $w ? '@ = ' : '$ = ';
       $a = $h ? '(' . join(', ', @a) . ')' : '';
       push(@frames, "$w&$s$a from file $f line $l\n");
   }
   for ($i=0; $i <= $#frames; $i++) {
       print $frames[$i];
   }
   exit 1;
} 

1;