/usr/share/perl5/Type/Library.pm is in libtype-tiny-perl 1.000004-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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use 5.006001;
use strict;
use warnings;
BEGIN {
$Type::Library::AUTHORITY = 'cpan:TOBYINK';
$Type::Library::VERSION = '1.000004';
}
use Eval::TypeTiny qw< eval_closure >;
use Scalar::Util qw< blessed refaddr >;
use Type::Tiny;
use Types::TypeTiny qw< TypeTiny to_TypeTiny >;
require Exporter::Tiny;
our @ISA = 'Exporter::Tiny';
BEGIN { *NICE_PROTOTYPES = ($] >= 5.014) ? sub () { !!1 } : sub () { !!0 } };
sub _croak ($;@) { require Error::TypeTiny; goto \&Error::TypeTiny::croak }
{
my $got_subname;
my %already; # prevent renaming established functions
sub _subname ($$)
{
($got_subname or eval "require Sub::Name")
and ($got_subname = 1)
and !$already{refaddr($_[1])}++
and return(Sub::Name::subname(@_));
return $_[1];
}
}
sub _exporter_validate_opts
{
my $class = shift;
no strict "refs";
my $into = $_[0]{into};
push @{"$into\::ISA"}, $class if $_[0]{base};
return $class->SUPER::_exporter_validate_opts(@_);
}
sub _exporter_expand_tag
{
my $class = shift;
my ($name, $value, $globals) = @_;
$name eq 'types' and return map [ "$_" => $value ], $class->type_names;
$name eq 'is' and return map [ "is_$_" => $value ], $class->type_names;
$name eq 'assert' and return map [ "assert_$_" => $value ], $class->type_names;
$name eq 'to' and return map [ "to_$_" => $value ], $class->type_names;
$name eq 'coercions' and return map [ "$_" => $value ], $class->coercion_names;
if ($name eq 'all')
{
no strict "refs";
return (
map(
[ "+$_" => $value ],
$class->type_names,
),
map(
[ $_ => $value ],
$class->coercion_names,
@{"$class\::EXPORT"},
@{"$class\::EXPORT_OK"},
),
);
}
return $class->SUPER::_exporter_expand_tag(@_);
}
sub _mksub
{
my $class = shift;
my ($type, $post_method) = @_;
$post_method ||= q();
my $source = $type->is_parameterizable
? sprintf(
q{
sub (%s) {
return $_[0]->complete($type) if ref($_[0]) eq 'Type::Tiny::_HalfOp';
my $params; $params = shift if ref($_[0]) eq q(ARRAY);
my $t = $params ? $type->parameterize(@$params) : $type;
@_ && wantarray ? return($t%s, @_) : return $t%s;
}
},
NICE_PROTOTYPES ? q(;$) : q(;@),
$post_method,
$post_method,
)
: sprintf(
q{ sub () { $type%s if $] } },
$post_method,
);
return _subname(
$type->qualified_name,
eval_closure(
source => $source,
description => sprintf("exportable function '%s'", $type),
environment => {'$type' => \$type},
),
);
}
sub _exporter_permitted_regexp
{
my $class = shift;
my $inherited = $class->SUPER::_exporter_permitted_regexp(@_);
my $types = join "|", map quotemeta, sort {
length($b) <=> length($a) or $a cmp $b
} $class->type_names;
my $coercions = join "|", map quotemeta, sort {
length($b) <=> length($a) or $a cmp $b
} $class->coercion_names;
qr{^(?:
$inherited
| (?: (?:is_|to_|assert_)? (?:$types) )
| (?:$coercions)
)$}xms;
}
sub _exporter_expand_sub
{
my $class = shift;
my ($name, $value, $globals) = @_;
if ($name =~ /^\+(.+)/ and $class->has_type($1))
{
my $type = $1;
my $value2 = +{%{$value||{}}};
return map $class->_exporter_expand_sub($_, $value2, $globals),
$type, "is_$type", "assert_$type", "to_$type";
}
if (my $type = $class->get_type($name))
{
my $post_method = q();
$post_method = '->mouse_type' if $globals->{mouse};
$post_method = '->moose_type' if $globals->{moose};
return ($name => $class->_mksub($type, $post_method)) if $post_method;
}
return $class->SUPER::_exporter_expand_sub(@_);
}
sub _exporter_install_sub
{
my $class = shift;
my ($name, $value, $globals, $sym) = @_;
my $package = $globals->{into};
if (!ref $package and my $type = $class->get_type($name))
{
my ($prefix) = grep defined, $value->{-prefix}, $globals->{prefix}, q();
my ($suffix) = grep defined, $value->{-suffix}, $globals->{suffix}, q();
my $as = $prefix . ($value->{-as} || $name) . $suffix;
$INC{'Type/Registry.pm'}
? 'Type::Registry'->for_class($package)->add_type($type, $as)
: ($Type::Registry::DELAYED{$package}{$as} = $type);
}
$class->SUPER::_exporter_install_sub(@_);
}
sub _exporter_fail
{
my $class = shift;
my ($name, $value, $globals) = @_;
my $into = $globals->{into}
or _croak("Parameter 'into' not supplied");
if ($globals->{declare})
{
my $declared = sub (;$)
{
my $params; $params = shift if ref($_[0]) eq "ARRAY";
my $type = $into->get_type($name);
unless ($type)
{
_croak "Cannot parameterize a non-existant type" if $params;
$type = $name;
}
my $t = $params ? $type->parameterize(@$params) : $type;
@_ && wantarray ? return($t, @_) : return $t;
};
return(
$name,
_subname(
"$class\::$name",
NICE_PROTOTYPES ? sub (;$) { goto $declared } : sub (;@) { goto $declared },
),
);
}
return $class->SUPER::_exporter_fail(@_);
}
sub meta
{
no strict "refs";
no warnings "once";
return $_[0] if blessed $_[0];
${"$_[0]\::META"} ||= bless {}, $_[0];
}
sub add_type
{
my $meta = shift->meta;
my $class = blessed($meta);
my $type =
ref($_[0]) =~ /^Type::Tiny\b/ ? $_[0] :
blessed($_[0]) ? to_TypeTiny($_[0]) :
ref($_[0]) eq q(HASH) ? "Type::Tiny"->new(library => $class, %{$_[0]}) :
"Type::Tiny"->new(library => $class, @_);
my $name = $type->{name};
$meta->{types} ||= {};
_croak 'Type %s already exists in this library', $name if $meta->has_type($name);
_croak 'Type %s conflicts with coercion of same name', $name if $meta->has_coercion($name);
_croak 'Cannot add anonymous type to a library' if $type->is_anon;
$meta->{types}{$name} = $type;
no strict "refs";
no warnings "redefine", "prototype";
my $to_type = $type->has_coercion && $type->coercion->frozen
? $type->coercion->compiled_coercion
: sub ($) { $type->coerce($_[0]) };
*{"$class\::$name"} = $class->_mksub($type);
*{"$class\::is_$name"} = _subname "$class\::is_$name", $type->compiled_check;
*{"$class\::to_$name"} = _subname "$class\::to_$name", $to_type;
*{"$class\::assert_$name"} = _subname "$class\::assert_$name", $type->_overload_coderef;
return $type;
}
sub get_type
{
my $meta = shift->meta;
$meta->{types}{$_[0]};
}
sub has_type
{
my $meta = shift->meta;
exists $meta->{types}{$_[0]};
}
sub type_names
{
my $meta = shift->meta;
keys %{ $meta->{types} };
}
sub add_coercion
{
require Type::Coercion;
my $meta = shift->meta;
my $c = blessed($_[0]) ? $_[0] : "Type::Coercion"->new(@_);
my $name = $c->name;
$meta->{coercions} ||= {};
_croak 'Coercion %s already exists in this library', $name if $meta->has_coercion($name);
_croak 'Coercion %s conflicts with type of same name', $name if $meta->has_type($name);
_croak 'Cannot add anonymous type to a library' if $c->is_anon;
$meta->{coercions}{$name} = $c;
no strict "refs";
no warnings "redefine", "prototype";
my $class = blessed($meta);
*{"$class\::$name"} = $class->_mksub($c);
return $c;
}
sub get_coercion
{
my $meta = shift->meta;
$meta->{coercions}{$_[0]};
}
sub has_coercion
{
my $meta = shift->meta;
exists $meta->{coercions}{$_[0]};
}
sub coercion_names
{
my $meta = shift->meta;
keys %{ $meta->{coercions} };
}
sub make_immutable
{
my $meta = shift->meta;
my $class = ref($meta);
for my $type (values %{$meta->{types}})
{
$type->coercion->freeze;
no strict "refs";
no warnings "redefine", "prototype";
my $to_type = $type->has_coercion && $type->coercion->frozen
? $type->coercion->compiled_coercion
: sub ($) { $type->coerce($_[0]) };
my $name = $type->name;
*{"$class\::to_$name"} = _subname "$class\::to_$name", $to_type;
}
1;
}
1;
__END__
=pod
=encoding utf-8
=for stopwords Moo(se)-compatible MooseX::Types-like
=head1 NAME
Type::Library - tiny, yet Moo(se)-compatible type libraries
=head1 SYNOPSIS
=for test_synopsis
BEGIN { die "SKIP: crams multiple modules into single example" };
package Types::Mine {
use Scalar::Util qw(looks_like_number);
use Type::Library -base;
use Type::Tiny;
my $NUM = "Type::Tiny"->new(
name => "Number",
constraint => sub { looks_like_number($_) },
message => sub { "$_ ain't a number" },
);
__PACKAGE__->meta->add_type($NUM);
__PACKAGE__->meta->make_immutable;
}
package Ermintrude {
use Moo;
use Types::Mine qw(Number);
has favourite_number => (is => "ro", isa => Number);
}
package Bullwinkle {
use Moose;
use Types::Mine qw(Number);
has favourite_number => (is => "ro", isa => Number);
}
package Maisy {
use Mouse;
use Types::Mine qw(Number);
has favourite_number => (is => "ro", isa => Number);
}
=head1 STATUS
This module is covered by the
L<Type-Tiny stability policy|Type::Tiny::Manual::Policies/"STABILITY">.
=head1 DESCRIPTION
L<Type::Library> is a tiny class for creating MooseX::Types-like type
libraries which are compatible with Moo, Moose and Mouse.
If you're reading this because you want to create a type library, then
you're probably better off reading L<Type::Tiny::Manual::Libraries>.
=head2 Methods
A type library is a singleton class. Use the C<meta> method to get a blessed
object which other methods can get called on. For example:
Types::Mine->meta->add_type($foo);
=begin trustme
=item meta
=end trustme
=over
=item C<< add_type($type) >> or C<< add_type(%opts) >>
Add a type to the library. If C<< %opts >> is given, then this method calls
C<< Type::Tiny->new(%opts) >> first, and adds the resultant type.
Adding a type named "Foo" to the library will automatically define four
functions in the library's namespace:
=over
=item C<< Foo >>
Returns the Type::Tiny object.
=item C<< is_Foo($value) >>
Returns true iff $value passes the type constraint.
=item C<< assert_Foo($value) >>
Returns $value iff $value passes the type constraint. Dies otherwise.
=item C<< to_Foo($value) >>
Coerces the value to the type.
=back
=item C<< get_type($name) >>
Gets the C<Type::Tiny> object corresponding to the name.
=item C<< has_type($name) >>
Boolean; returns true if the type exists in the library.
=item C<< type_names >>
List all types defined by the library.
=item C<< add_coercion($c) >> or C<< add_coercion(%opts) >>
Add a standalone coercion to the library. If C<< %opts >> is given, then
this method calls C<< Type::Coercion->new(%opts) >> first, and adds the
resultant coercion.
Adding a coercion named "FooFromBar" to the library will automatically
define a function in the library's namespace:
=over
=item C<< FooFromBar >>
Returns the Type::Coercion object.
=back
=item C<< get_coercion($name) >>
Gets the C<Type::Coercion> object corresponding to the name.
=item C<< has_coercion($name) >>
Boolean; returns true if the coercion exists in the library.
=item C<< coercion_names >>
List all standalone coercions defined by the library.
=item C<< import(@args) >>
Type::Library-based libraries are exporters.
=item C<< make_immutable >>
A shortcut for calling C<< $type->coercion->freeze >> on every
type constraint in the library.
=back
=head2 Constants
=over
=item C<< NICE_PROTOTYPES >>
If this is true, then Type::Library will give parameterizable type constraints
slightly the nicer prototype of C<< (;$) >> instead of the default C<< (;@) >>.
This allows constructs like:
ArrayRef[Int] | HashRef[Int]
... to "just work".
=back
=head2 Export
Type libraries are exporters. For the purposes of the following examples,
assume that the C<Types::Mine> library defines types C<Number> and C<String>.
# Exports nothing.
#
use Types::Mine;
# Exports a function "String" which is a constant returning
# the String type constraint.
#
use Types::Mine qw( String );
# Exports both String and Number as above.
#
use Types::Mine qw( String Number );
# Same.
#
use Types::Mine qw( :types );
# Exports a sub "is_String" so that "is_String($foo)" is equivalent
# to "String->check($foo)".
#
use Types::Mine qw( is_String );
# Exports "is_String" and "is_Number".
#
use Types::Mine qw( :is );
# Exports a sub "assert_String" so that "assert_String($foo)" is
# equivalent to "String->assert_return($foo)".
#
use Types::Mine qw( assert_String );
# Exports "assert_String" and "assert_Number".
#
use Types::Mine qw( :assert );
# Exports a sub "to_String" so that "to_String($foo)" is equivalent
# to "String->coerce($foo)".
#
use Types::Mine qw( to_String );
# Exports "to_String" and "to_Number".
#
use Types::Mine qw( :to );
# Exports "String", "is_String", "assert_String" and "coerce_String".
#
use Types::Mine qw( +String );
# Exports everything.
#
use Types::Mine qw( :all );
Type libraries automatically inherit from L<Exporter::Tiny>; see the
documentation of that module for tips and tricks importing from libraries.
=head1 BUGS
Please report any bugs to
L<http://rt.cpan.org/Dist/Display.html?Queue=Type-Tiny>.
=head1 SEE ALSO
L<Type::Tiny::Manual>.
L<Type::Tiny>, L<Type::Utils>, L<Types::Standard>, L<Type::Coercion>.
L<Moose::Util::TypeConstraints>,
L<Mouse::Util::TypeConstraints>.
=head1 AUTHOR
Toby Inkster E<lt>tobyink@cpan.orgE<gt>.
=head1 COPYRIGHT AND LICENCE
This software is copyright (c) 2013-2014 by Toby Inkster.
This is free software; you can redistribute it and/or modify it under
the same terms as the Perl 5 programming language system itself.
=head1 DISCLAIMER OF WARRANTIES
THIS PACKAGE IS PROVIDED "AS IS" AND WITHOUT ANY EXPRESS OR IMPLIED
WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
|