#!/usr/bin/perl -w

# Copyright 2009, 2010, 2011, 2013, 2014 Kevin Ryde

# This file is part of Perl-Critic-Pulp.
#
# Perl-Critic-Pulp is free software; you can redistribute it and/or
# modify it under the terms of the GNU General Public License as published
# by the Free Software Foundation; either version 3, or (at your option) any
# later version.
#
# Perl-Critic-Pulp is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General
# Public License for more details.
#
# You should have received a copy of the GNU General Public License along
# with Perl-Critic-Pulp.  If not, see <http://www.gnu.org/licenses/>.

# cf
# egrep -nH -ire '[^[a-z-]-[a-ln-z0-9][a-z0-9]*::' /usr/share/perl/5.10
# /usr/share/perl/5.14/Math/Complex.pm:712:	    -CORE::exp(CORE::log(-$z)/3) :
# /usr/share/perl/5.14/Math/Complex.pm:1043:	my $v = -CORE::log($alpha + CORE::sqrt($alpha*$alpha-1));

# cf \c control characters in lower case
# XML::RSS::TimingBot \cm\cj

use 5.005;
use strict;
use warnings;
use Perl::Critic::Utils 'is_perl_builtin';

use lib::abs '.';
use MyLocatePerl;
use MyStuff;

# uncomment this to run the ### lines
# use Smart::Comments;

my $verbose = 0;

my $l = MyLocatePerl->new;
while (my ($filename, $str) = $l->next) {
  if ($verbose) { print "look at $filename\n"; }

  # if ($str =~ /^__END__/m) {
  #   substr ($str, $-[0], length($str), '');
  # }

  # strip comments
  #  $str =~ s/#.*//mg;

  while ($str =~ /((^|[^>A-Za-z])(\w+)
                    ([ \t]*(\#[^\n]*)?\n)+
                    [ \t]*=>
                  )/sgx) {
    my $whole = $1;
    my $word = $3;
    next unless is_perl_builtin(_sans_dash($word));
    my $pos_end = pos($str);
    my $pos = $pos_end - length($whole) + 1;

    my ($line, $col) = MyStuff::pos_to_line_and_column ($str, $pos);
    my $l1 = MyStuff::line_at_pos($str, $pos);
    my $l2 = MyStuff::line_at_pos($str, $pos_end);

    ### $l1

    # substr($s,0,$col) =~ /q[qx]|"/ or next;

    print "$filename:$line:$col:\n  $l1  $l2";
  }
}

sub _sans_dash {
  my ($str) = @_;
  $str =~ s/^-//;
  return $str;
}

exit 0;

__END__

print  # foo
=> '123',

-caller # jkdf
=> '123',