| File | /usr/local/lib/perl/5.10.0/Moose/Meta/TypeConstraint/DuckType.pm |
| Statements Executed | 29 |
| Total Time | 0.0010019 seconds |
| Calls | P | F | Exclusive Time |
Inclusive Time |
Subroutine |
|---|---|---|---|---|---|
| 0 | 0 | 0 | 0s | 0s | Moose::Meta::TypeConstraint::DuckType::BEGIN |
| 0 | 0 | 0 | 0s | 0s | Moose::Meta::TypeConstraint::DuckType::__ANON__[:65] |
| 0 | 0 | 0 | 0s | 0s | Moose::Meta::TypeConstraint::DuckType::__ANON__[:66] |
| 0 | 0 | 0 | 0s | 0s | Moose::Meta::TypeConstraint::DuckType::__ANON__[:79] |
| 0 | 0 | 0 | 0s | 0s | Moose::Meta::TypeConstraint::DuckType::__ANON__[:80] |
| 0 | 0 | 0 | 0s | 0s | Moose::Meta::TypeConstraint::DuckType::_compile_hand_optimized_type_constraint |
| 0 | 0 | 0 | 0s | 0s | Moose::Meta::TypeConstraint::DuckType::constraint |
| 0 | 0 | 0 | 0s | 0s | Moose::Meta::TypeConstraint::DuckType::create_child_type |
| 0 | 0 | 0 | 0s | 0s | Moose::Meta::TypeConstraint::DuckType::equals |
| 0 | 0 | 0 | 0s | 0s | Moose::Meta::TypeConstraint::DuckType::get_message |
| 0 | 0 | 0 | 0s | 0s | Moose::Meta::TypeConstraint::DuckType::new |
| Line | Stmts. | Exclusive Time | Avg. | Code |
|---|---|---|---|---|
| 1 | package Moose::Meta::TypeConstraint::DuckType; | |||
| 2 | ||||
| 3 | 3 | 34µs | 11µs | use strict; # spent 13µs making 1 call to strict::import |
| 4 | 3 | 28µs | 9µs | use warnings; # spent 25µs making 1 call to warnings::import |
| 5 | 3 | 52µs | 17µs | use metaclass; # spent 856µs making 1 call to metaclass::import |
| 6 | ||||
| 7 | 3 | 34µs | 11µs | use Scalar::Util 'blessed'; # spent 46µs making 1 call to Exporter::import |
| 8 | 3 | 31µs | 10µs | use List::MoreUtils qw(all); # spent 48µs making 1 call to Exporter::import |
| 9 | 3 | 36µs | 12µs | use Moose::Util 'english_list'; # spent 294µs making 1 call to Sub::Exporter::__ANON__[/usr/local/share/perl/5.10.0/Sub/Exporter.pm:756] |
| 10 | ||||
| 11 | 3 | 67µs | 22µs | use Moose::Util::TypeConstraints (); |
| 12 | ||||
| 13 | 1 | 800ns | 800ns | our $VERSION = '1.15'; |
| 14 | 1 | 24µs | 24µs | $VERSION = eval $VERSION; |
| 15 | 1 | 600ns | 600ns | our $AUTHORITY = 'cpan:STEVAN'; |
| 16 | ||||
| 17 | 3 | 664µs | 221µs | use base 'Moose::Meta::TypeConstraint'; # spent 76µs making 1 call to base::import |
| 18 | ||||
| 19 | 1 | 22µs | 22µs | __PACKAGE__->meta->add_attribute('methods' => ( # spent 573µs making 1 call to Class::MOP::Mixin::HasAttributes::add_attribute
# spent 35µs making 1 call to Moose::Meta::TypeConstraint::DuckType::meta |
| 20 | accessor => 'methods', | |||
| 21 | )); | |||
| 22 | ||||
| 23 | sub new { | |||
| 24 | my ( $class, %args ) = @_; | |||
| 25 | ||||
| 26 | $args{parent} = Moose::Util::TypeConstraints::find_type_constraint('Object'); | |||
| 27 | ||||
| 28 | my $self = $class->_new(\%args); | |||
| 29 | ||||
| 30 | $self->compile_type_constraint() | |||
| 31 | unless $self->_has_compiled_type_constraint; | |||
| 32 | ||||
| 33 | return $self; | |||
| 34 | } | |||
| 35 | ||||
| 36 | sub equals { | |||
| 37 | my ( $self, $type_or_name ) = @_; | |||
| 38 | ||||
| 39 | my $other = Moose::Util::TypeConstraints::find_type_constraint($type_or_name); | |||
| 40 | ||||
| 41 | return unless $other->isa(__PACKAGE__); | |||
| 42 | ||||
| 43 | my @self_methods = sort @{ $self->methods }; | |||
| 44 | my @other_methods = sort @{ $other->methods }; | |||
| 45 | ||||
| 46 | return unless @self_methods == @other_methods; | |||
| 47 | ||||
| 48 | while ( @self_methods ) { | |||
| 49 | my $method = shift @self_methods; | |||
| 50 | my $other_method = shift @other_methods; | |||
| 51 | ||||
| 52 | return unless $method eq $other_method; | |||
| 53 | } | |||
| 54 | ||||
| 55 | return 1; | |||
| 56 | } | |||
| 57 | ||||
| 58 | sub constraint { | |||
| 59 | my $self = shift; | |||
| 60 | ||||
| 61 | my @methods = @{ $self->methods }; | |||
| 62 | ||||
| 63 | return sub { | |||
| 64 | my $obj = shift; | |||
| 65 | return all { $obj->can($_) } @methods | |||
| 66 | }; | |||
| 67 | } | |||
| 68 | ||||
| 69 | sub _compile_hand_optimized_type_constraint { | |||
| 70 | my $self = shift; | |||
| 71 | ||||
| 72 | my @methods = @{ $self->methods }; | |||
| 73 | ||||
| 74 | sub { | |||
| 75 | my $obj = shift; | |||
| 76 | ||||
| 77 | return blessed($obj) | |||
| 78 | && blessed($obj) ne 'Regexp' | |||
| 79 | && all { $obj->can($_) } @methods; | |||
| 80 | }; | |||
| 81 | } | |||
| 82 | ||||
| 83 | sub create_child_type { | |||
| 84 | my ($self, @args) = @_; | |||
| 85 | return Moose::Meta::TypeConstraint->new(@args, parent => $self); | |||
| 86 | } | |||
| 87 | ||||
| 88 | sub get_message { | |||
| 89 | my $self = shift; | |||
| 90 | my ($value) = @_; | |||
| 91 | ||||
| 92 | if ($self->has_message) { | |||
| 93 | return $self->SUPER::get_message(@_); | |||
| 94 | } | |||
| 95 | ||||
| 96 | my @methods = grep { !$value->can($_) } @{ $self->methods }; | |||
| 97 | my $class = blessed $value; | |||
| 98 | return $class | |||
| 99 | . " is missing methods " | |||
| 100 | . english_list(map { "'$_'" } @methods); | |||
| 101 | } | |||
| 102 | ||||
| 103 | 1 | 11µs | 11µs | 1; |
| 104 | ||||
| 105 | __END__ | |||
| 106 | ||||
| 107 | =pod | |||
| 108 | ||||
| 109 | =head1 NAME | |||
| 110 | ||||
| 111 | Moose::Meta::TypeConstraint::DuckType - Type constraint for duck typing | |||
| 112 | ||||
| 113 | =head1 DESCRIPTION | |||
| 114 | ||||
| 115 | This class represents type constraints based on an enumerated list of | |||
| 116 | required methods. | |||
| 117 | ||||
| 118 | =head1 INHERITANCE | |||
| 119 | ||||
| 120 | C<Moose::Meta::TypeConstraint::DuckType> is a subclass of | |||
| 121 | L<Moose::Meta::TypeConstraint>. | |||
| 122 | ||||
| 123 | =head1 METHODS | |||
| 124 | ||||
| 125 | =over 4 | |||
| 126 | ||||
| 127 | =item B<< Moose::Meta::TypeConstraint::DuckType->new(%options) >> | |||
| 128 | ||||
| 129 | This creates a new duck type constraint based on the given | |||
| 130 | C<%options>. | |||
| 131 | ||||
| 132 | It takes the same options as its parent, with several | |||
| 133 | exceptions. First, it requires an additional option, C<methods>. This | |||
| 134 | should be an array reference containing a list of required method | |||
| 135 | names. Second, it automatically sets the parent to the C<Object> type. | |||
| 136 | ||||
| 137 | Finally, it ignores any provided C<constraint> option. The constraint | |||
| 138 | is generated automatically based on the provided C<methods>. | |||
| 139 | ||||
| 140 | =item B<< $constraint->methods >> | |||
| 141 | ||||
| 142 | Returns the array reference of required methods provided to the | |||
| 143 | constructor. | |||
| 144 | ||||
| 145 | =item B<< $constraint->create_child_type >> | |||
| 146 | ||||
| 147 | This returns a new L<Moose::Meta::TypeConstraint> object with the type | |||
| 148 | as its parent. | |||
| 149 | ||||
| 150 | Note that it does I<not> return a C<Moose::Meta::TypeConstraint::DuckType> | |||
| 151 | object! | |||
| 152 | ||||
| 153 | =back | |||
| 154 | ||||
| 155 | =head1 BUGS | |||
| 156 | ||||
| 157 | See L<Moose/BUGS> for details on reporting bugs. | |||
| 158 | ||||
| 159 | =head1 AUTHOR | |||
| 160 | ||||
| 161 | Chris Prather E<lt>chris@prather.orgE<gt> | |||
| 162 | ||||
| 163 | Shawn M Moore E<lt>sartak@gmail.comE<gt> | |||
| 164 | ||||
| 165 | =head1 COPYRIGHT AND LICENSE | |||
| 166 | ||||
| 167 | Copyright 2006-2010 by Infinity Interactive, Inc. | |||
| 168 | ||||
| 169 | L<http://www.iinteractive.com> | |||
| 170 | ||||
| 171 | This library is free software; you can redistribute it and/or modify | |||
| 172 | it under the same terms as Perl itself. | |||
| 173 | ||||
| 174 | =cut | |||
| 175 |