Commit | Line | Data |
a0d0e21e |
1 | package Carp; |
2 | |
3 | # This package implements handy routines for modules that wish to throw |
4 | # exceptions outside of the current package. |
5 | |
6 | require Exporter; |
7 | @ISA = Exporter; |
8 | @EXPORT = qw(confess croak carp); |
9 | |
10 | sub longmess { |
11 | my $error = shift; |
12 | my $mess = ""; |
13 | my $i = 2; |
14 | my ($pack,$file,$line,$sub); |
15 | while (($pack,$file,$line,$sub) = caller($i++)) { |
16 | $mess .= "\t$sub " if $error eq "called"; |
17 | $mess .= "$error at $file line $line\n"; |
18 | $error = "called"; |
19 | } |
20 | $mess || $error; |
21 | } |
22 | |
23 | sub shortmess { |
24 | my $error = shift; |
25 | my ($curpack) = caller(1); |
26 | my $i = 2; |
27 | my ($pack,$file,$line,$sub); |
28 | while (($pack,$file,$line,$sub) = caller($i++)) { |
29 | return "$error at $file line $line\n" if $pack ne $curpack; |
30 | } |
31 | longmess $error; |
32 | } |
33 | |
34 | sub confess { die longmess @_; } |
35 | sub croak { die shortmess @_; } |
36 | sub carp { warn shortmess @_; } |
37 | |