package MooseX::AttributeHelpers::MethodProvider::Array;
use Moose::Role;
our $VERSION = '0.21';
$VERSION = eval $VERSION;
our $AUTHORITY = 'cpan:STEVAN';
with 'MooseX::AttributeHelpers::MethodProvider::List';
sub push : method {
my ($attr, $reader, $writer) = @_;
if ($attr->has_type_constraint && $attr->type_constraint->isa('Moose::Meta::TypeConstraint::Parameterized')) {
my $container_type_constraint = $attr->type_constraint->type_parameter;
return sub {
my $instance = CORE::shift;
$container_type_constraint->check($_)
|| confess "Value " . ($_||'undef') . " did not pass container type constraint '$container_type_constraint'"
foreach @_;
CORE::push @{$reader->($instance)} => @_;
};
}
else {
return sub {
my $instance = CORE::shift;
CORE::push @{$reader->($instance)} => @_;
};
}
}
sub pop : method {
my ($attr, $reader, $writer) = @_;
return sub {
CORE::pop @{$reader->($_[0])}
};
}
sub unshift : method {
my ($attr, $reader, $writer) = @_;
if ($attr->has_type_constraint && $attr->type_constraint->isa('Moose::Meta::TypeConstraint::Parameterized')) {
my $container_type_constraint = $attr->type_constraint->type_parameter;
return sub {
my $instance = CORE::shift;
$container_type_constraint->check($_)
|| confess "Value " . ($_||'undef') . " did not pass container type constraint '$container_type_constraint'"
foreach @_;
CORE::unshift @{$reader->($instance)} => @_;
};
}
else {
return sub {
my $instance = CORE::shift;
CORE::unshift @{$reader->($instance)} => @_;
};
}
}
sub shift : method {
my ($attr, $reader, $writer) = @_;
return sub {
CORE::shift @{$reader->($_[0])}
};
}
sub get : method {
my ($attr, $reader, $writer) = @_;
return sub {
$reader->($_[0])->[$_[1]]
};
}
sub set : method {
my ($attr, $reader, $writer) = @_;
if ($attr->has_type_constraint && $attr->type_constraint->isa('Moose::Meta::TypeConstraint::Parameterized')) {
my $container_type_constraint = $attr->type_constraint->type_parameter;
return sub {
($container_type_constraint->check($_[2]))
|| confess "Value " . ($_[2]||'undef') . " did not pass container type constraint '$container_type_constraint'";
$reader->($_[0])->[$_[1]] = $_[2]
};
}
else {
return sub {
$reader->($_[0])->[$_[1]] = $_[2]
};
}
}
sub accessor : method {
my ($attr, $reader, $writer) = @_;
if ($attr->has_type_constraint && $attr->type_constraint->isa('Moose::Meta::TypeConstraint::Parameterized')) {
my $container_type_constraint = $attr->type_constraint->type_parameter;
return sub {
my $self = shift;
if (@_ == 1) { # reader
return $reader->($self)->[$_[0]];
}
elsif (@_ == 2) { # writer
($container_type_constraint->check($_[1]))
|| confess "Value " . ($_[1]||'undef') . " did not pass container type constraint '$container_type_constraint'";
$reader->($self)->[$_[0]] = $_[1];
}
else {
confess "One or two arguments expected, not " . @_;
}
};
}
else {
return sub {
my $self = shift;
if (@_ == 1) { # reader
return $reader->($self)->[$_[0]];
}
elsif (@_ == 2) { # writer
$reader->($self)->[$_[0]] = $_[1];
}
else {
confess "One or two arguments expected, not " . @_;
}
};
}
}
sub clear : method {
my ($attr, $reader, $writer) = @_;
return sub {
@{$reader->($_[0])} = ()
};
}
sub delete : method {
my ($attr, $reader, $writer) = @_;
return sub {
CORE::splice @{$reader->($_[0])}, $_[1], 1;
}
}
sub insert : method {
my ($attr, $reader, $writer) = @_;
if ($attr->has_type_constraint && $attr->type_constraint->isa('Moose::Meta::TypeConstraint::Parameterized')) {
my $container_type_constraint = $attr->type_constraint->type_parameter;
return sub {
($container_type_constraint->check($_[2]))
|| confess "Value " . ($_[2]||'undef') . " did not pass container type constraint '$container_type_constraint'";
CORE::splice @{$reader->($_[0])}, $_[1], 0, $_[2];
};
}
else {
return sub {
CORE::splice @{$reader->($_[0])}, $_[1], 0, $_[2];
};
}
}
sub splice : method {
my ($attr, $reader, $writer) = @_;
if ($attr->has_type_constraint && $attr->type_constraint->isa('Moose::Meta::TypeConstraint::Parameterized')) {
my $container_type_constraint = $attr->type_constraint->type_parameter;
return sub {
my ( $self, $i, $j, @elems ) = @_;
($container_type_constraint->check($_))
|| confess "Value " . (defined($_) ? $_ : 'undef') . " did not pass container type constraint '$container_type_constraint'" for @elems;
CORE::splice @{$reader->($self)}, $i, $j, @elems;
};
}
else {
return sub {
my ( $self, $i, $j, @elems ) = @_;
CORE::splice @{$reader->($self)}, $i, $j, @elems;
};
}
}
sub sort_in_place : method {
my ($attr, $reader, $writer) = @_;
return sub {
my ($instance, $predicate) = @_;
die "Argument must be a code reference"
if $predicate && ref $predicate ne 'CODE';
my @sorted;
if ($predicate) {
@sorted = CORE::sort { $predicate->($a, $b) } @{$reader->($instance)};
}
else {
@sorted = CORE::sort @{$reader->($instance)};
}
$writer->($instance, \@sorted);
};
}
1;
__END__
=pod
=head1 NAME
MooseX::AttributeHelpers::MethodProvider::Array
=head1 DESCRIPTION
This is a role which provides the method generators for
L<MooseX::AttributeHelpers::Collection::Array>.
=head1 METHODS
=over 4
=item B<meta>
=back
=head1 PROVIDED METHODS
This module also consumes the B<List> method providers, to
see those provied methods, refer to that documentation.
=over 4
=item B<get>
=item B<pop>
=item B<push>
=item B<set>
=item B<shift>
=item B<unshift>
=item B<clear>
=item B<delete>
=item B<insert>
=item B<splice>
=item B<sort_in_place>
Sorts the array I<in place>, modifying the value of the attribute.
You can provide an optional subroutine reference to sort with (as you
can with the core C<sort> function). However, instead of using C<$a>
and C<$b>, you will need to use C<$_[0]> and C<$_[1]> instead.
=item B<accessor>
If passed one argument, returns the value of the requested element.
If passed two arguments, sets the value of the requested element.
=back
=head1 BUGS
All complex software has bugs lurking in it, and this module is no
exception. If you find a bug please either email me, or add the bug
to cpan-RT.
=head1 AUTHOR
Stevan Little E<lt>stevan@iinteractive.comE<gt>
=head1 COPYRIGHT AND LICENSE
Copyright 2007-2009 by Infinity Interactive, Inc.
L<http://www.iinteractive.com>
This library is free software; you can redistribute it and/or modify
it under the same terms as Perl itself.
=cut