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package Data::Perl::Role::String;
$Data::Perl::Role::String::VERSION = '0.002009';
# ABSTRACT: Wrapping class for Perl scalar strings.
use strictures 1;
use Role::Tiny;
sub new { bless \(my $s = $_[1]), $_[0] }
sub inc { ++${$_[0]} }
sub append { ${$_[0]} = ${$_[0]} . $_[1] }
sub prepend { ${$_[0]} = $_[1] . ${$_[0]} }
sub replace {
if (ref($_[2]) eq 'CODE') {
${$_[0]} =~ s/$_[1]/$_[2]->()/e;
}
else {
${$_[0]} =~ s/$_[1]/$_[2]/;
}
${$_[0]};
}
sub match {
${$_[0]} =~ /$_[1]/;
}
sub chop { CORE::chop ${$_[0]} }
sub chomp { CORE::chomp ${$_[0]} }
sub clear { ${$_[0]} = '' }
sub length { CORE::length ${$_[0]} }
sub substr {
if (@_ >= 4) {
substr ${$_[0]}, $_[1], $_[2], $_[3];
}
elsif (@_ == 3) {
substr ${$_[0]}, $_[1], $_[2];
}
else {
substr ${$_[0]}, $_[1];
}
}
1;
=pod
=encoding UTF-8
=head1 NAME
Data::Perl::Role::String - Wrapping class for Perl scalar strings.
=head1 VERSION
version 0.002009
=head1 SYNOPSIS
use Data::Perl qw/string/;
my $string = string("foo\n");
$string->chomp; # returns 1, $string == "foo"
=head1 DESCRIPTION
This class provides a wrapper and methods for interacting with scalar strings.
=head1 PROVIDED METHODS
=over 4
=item * B<new($value)>
Constructs a new Data::Perl::String object, optionally initialized to $value if
passed in, and returns it.
=item * B<inc>
Increments the value stored in this slot using the magical string autoincrement
operator. Note that Perl doesn't provide analogous behavior in C<-->, so
C<dec> is not available. This method returns the new value.
This method does not accept any arguments.
=item * B<append($string)>
Appends to the string, like C<.=>, and returns the new value.
This method requires a single argument.
=item * B<prepend($string)>
Prepends to the string and returns the new value.
This method requires a single argument.
=item * B<replace($pattern, $replacement)>
Performs a regexp substitution (L<perlop/s>). There is no way to provide the
C<g> flag, but code references will be accepted for the replacement, causing
the regex to be modified with a single C<e>. C</smxi> can be applied using the
C<qr> operator. This method returns the new value.
This method requires two arguments.
=item * B<match($pattern)>
Runs the regex against the string and returns the matching value(s).
This method requires a single argument.
=item * B<chop>
Just like L<perlfunc/chop>. This method returns the chopped character.
This method does not accept any arguments.
=item * B<chomp>
Just like L<perlfunc/chomp>. This method returns the number of characters
removed.
This method does not accept any arguments.
=item * B<clear>
Sets the string to the empty string (not the value passed to C<default>).
This method does not have a defined return value.
This method does not accept any arguments.
=item * B<length>
Just like L<perlfunc/length>, returns the length of the string.
=item * B<substr>
This acts just like L<perlfunc/substr>. When called as a writer, it returns
the substring that was replaced, just like the Perl builtin.
This method requires at least one argument, and accepts no more than three.
=back
=head1 SEE ALSO
=over 4
=item * L<Data::Perl>
=item * L<MooX::HandlesVia>
=back
=head1 AUTHOR
Matthew Phillips <mattp@cpan.org>
=head1 COPYRIGHT AND LICENSE
This software is copyright (c) 2014 by Matthew Phillips <mattp@cpan.org>.
This is free software; you can redistribute it and/or modify it under
the same terms as the Perl 5 programming language system itself.
=cut
__END__
==pod
|
