NAME
Eval::LineNumbers - Add line numbers to heredoc blocks that contain perl source code
VERSION
version 0.35
SYNOPSIS
use Eval::LineNumbers qw(eval_line_numbers);
eval eval_line_numbers(<<END_HEREIS);
code
END_HEREIS
eval eval_line_numbers($caller_level, $code)DESCRIPTION
Add a #line "this-file" 392 comment to heredoc/hereis text that is going to be eval'ed so that error messages will point back to the right place.
Please note: when you embed \n in your code, it gets expanded in double-quote hereis documents so it will mess up your line numbering. Use \\n instead when you can.
Caller Level Example
The second form of eval_line_numbers where a caller-level is provided is for the situation where the code is generated in one place and eval'ed in another place. The caller level should be the number of stack levels between where the heredoc was created and where it is eval'ed.
sub example {
return <<END_HEREIS
code
END_HEREIS
}
eval eval_line_numbers(1, example())FUNCTIONS
All functions are exportable on request, but not by default.
eval_line_numbers
eval eval_line_numbers($code);
eval eval_line_numbers($caller_level, $code);eval_line_numbers_offset
eval_line_numbers_offset $offset;Sets the offset, which is by default 1. The offset is file scoped. This is useful if you want to pass a string without a heredoc. For example:
eval_line_numbers_offset 0;
eval eval_line_numbers q{
die "here";
};AUTHOR
Original author: David Muir Sharnoff
Current maintainer: Graham Ollis <plicease@cpan.org>
Contributors:
Olivier Mengué (DOLMEN)
David Steinbrunner (dsteinbrunner)
Alexey Ugnichev (thaewrapt)
COPYRIGHT AND LICENSE
This software is Copyright (c) 2009-2021 by David Muir Sharnoff.
This is free software, licensed under:
The GNU Lesser General Public License, Version 2.1, February 1999