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# Copyright (C) 2008 Arne Georg Gleditsch <lxr@linux.no>.
#
# This program 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 2 of the License, or
# (at your option) any later version.
#
# This program 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 this program; if not, write to the Free Software Foundation, Inc.,
# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
#
# The full GNU General Public License is included in this distribution
# in the file called COPYING.
package Subst::Complex;
use strict;
sub new {
my ($self, @args) = @_;
my (@re, @ac);
my $l = 1;
while (@args) {
my ($r, $a) = splice(@args, 0, 2);
"" =~ /|$r/;
push(@ac, [$l+1, $l+1+$#+, $a]);
$l += 1+$#+;
push(@re, "($r)");
}
return bless {'re' => '((?s:.*?))(?:'.join('|', @re).')',
'ac' => \@ac}, $self;
}
sub s {
my $self;
my $str;
if (ref($_[0])) {
$self = shift;
$str = shift;
}
else {
$str = shift;
$self = __PACKAGE__->new(@_);
}
my @res;
# $str =~ s{$$self{'re'}}{
# push(@res, $1) if length($1);
# my ($a) = grep { defined $-[$$_[0]] } @{$$self{'ac'}};
# my @g = map { substr($str, $-[$_], $+[$_] - $-[$_]);
# } $$a[0]..$$a[1];
# push(@res, $$a[2]->(@g));
# '';
# }ge;
$str =~ s{$$self{'re'}}{
push(@res, $1) if length($1);
my ($a) = grep { defined $-[$$_[0]] } @{$$self{'ac'}};
my @g = map { substr($str, $-[$_], $+[$_] - $-[$_]);
} $$a[0]..$$a[1];
push(@res, [$$a[2], [@g]]);
'';
}ge;
push(@res, $str) if length($str);
@res = map {
ref($_) ? $$_[0]->(@{$$_[1]}) : $_
} @res;
return @res;
}
1;
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