home *** CD-ROM | disk | FTP | other *** search
- package Carp;
-
- # This package implements handy routines for modules that wish to throw
- # exceptions outside of the current package.
-
- require Exporter;
- @ISA = Exporter;
- @EXPORT = qw(confess croak carp);
-
- sub longmess {
- my $error = shift;
- my $mess = "";
- my $i = 2;
- my ($pack,$file,$line,$sub);
- while (($pack,$file,$line,$sub) = caller($i++)) {
- $mess .= "\t$sub " if $error eq "called";
- $mess .= "$error at $file line $line\n";
- $error = "called";
- }
- $mess || $error;
- }
-
- sub shortmess {
- my $error = shift;
- my ($curpack) = caller(1);
- my $i = 2;
- my ($pack,$file,$line,$sub);
- while (($pack,$file,$line,$sub) = caller($i++)) {
- return "$error at $file line $line\n" if $pack ne $curpack;
- }
- longmess $error;
- }
-
- sub confess { die longmess @_; }
- sub croak { die shortmess @_; }
- sub carp { warn shortmess @_; }
-
-