use Carp 'confess';
use Scalar::Util 'blessed';
-our $VERSION = '0.03';
+our $VERSION = '0.05';
use Moose::Meta::TypeConstraint;
use Moose::Meta::TypeCoercion;
-sub import {
- shift;
- my $pkg = shift || caller();
- return if $pkg eq '-no-export';
- no strict 'refs';
- foreach my $export (qw(type subtype as where message coerce from via find_type_constraint)) {
- *{"${pkg}::${export}"} = \&{"${export}"};
- }
+{
+ require Sub::Exporter;
+
+ my @exports = qw[type subtype as where message coerce from via find_type_constraint enum];
+
+ Sub::Exporter->import(
+ -setup => {
+ exports => \@exports,
+ groups => {
+ default => [':all']
+ }
+ }
+ );
}
{
my %TYPES;
- sub find_type_constraint { $TYPES{$_[0]}->[1] }
-
+ sub find_type_constraint {
+ return $TYPES{$_[0]}->[1]
+ if exists $TYPES{$_[0]};
+ return;
+ }
+
+ sub _dump_type_constraints {
+ require Data::Dumper;
+ Data::Dumper::Dumper(\%TYPES);
+ }
+
sub _create_type_constraint {
my ($name, $parent, $check, $message) = @_;
my $pkg_defined_in = scalar(caller(1));
($TYPES{$name}->[0] eq $pkg_defined_in)
- || confess "The type constraint '$name' has already been created"
+ || confess "The type constraint '$name' has already been created "
if defined $name && exists $TYPES{$name};
$parent = find_type_constraint($parent) if defined $parent;
my $constraint = Moose::Meta::TypeConstraint->new(
$type->coercion($type_coercion);
}
+ sub create_type_constraint_union {
+ my (@type_constraint_names) = @_;
+ return Moose::Meta::TypeConstraint->union(
+ map {
+ find_type_constraint($_)
+ } @type_constraint_names
+ );
+ }
+
sub export_type_contstraints_as_functions {
my $pkg = caller();
no strict 'refs';
sub via (&) { $_[0] }
sub message (&) { $_[0] }
+sub enum {
+ my ($type_name, @values) = @_;
+ my $regexp = join '|' => @values;
+ _create_type_constraint(
+ $type_name,
+ 'Str',
+ sub { qr/^$regexp$/i }
+ );
+}
+
# define some basic types
-type 'Any' => where { 1 };
+type 'Any' => where { 1 }; # meta-type including all
+type 'Item' => where { 1 }; # base-type
+
+subtype 'Undef' => as 'Item' => where { !defined($_) };
+subtype 'Defined' => as 'Item' => where { defined($_) };
+
+subtype 'Bool' => as 'Item' => where { !defined($_) || $_ eq "" || "$_" eq '1' || "$_" eq '0' };
+
+subtype 'Value' => as 'Defined' => where { !ref($_) };
+subtype 'Ref' => as 'Defined' => where { ref($_) };
-subtype 'Value' => as 'Any' => where { !ref($_) };
-subtype 'Ref' => as 'Any' => where { ref($_) };
+subtype 'Str' => as 'Value' => where { 1 };
-subtype 'Int' => as 'Value' => where { Scalar::Util::looks_like_number($_) };
-subtype 'Str' => as 'Value' => where { !Scalar::Util::looks_like_number($_) };
+subtype 'Num' => as 'Value' => where { Scalar::Util::looks_like_number($_) };
+subtype 'Int' => as 'Num' => where { "$_" =~ /^-?[0-9]+$/ };
-subtype 'ScalarRef' => as 'Ref' => where { ref($_) eq 'SCALAR' };
+subtype 'ScalarRef' => as 'Ref' => where { ref($_) eq 'SCALAR' };
subtype 'ArrayRef' => as 'Ref' => where { ref($_) eq 'ARRAY' };
subtype 'HashRef' => as 'Ref' => where { ref($_) eq 'HASH' };
subtype 'CodeRef' => as 'Ref' => where { ref($_) eq 'CODE' };
# blessed(qr/.../) returns true,.. how odd
subtype 'Object' => as 'Ref' => where { blessed($_) && blessed($_) ne 'Regexp' };
+subtype 'Role' => as 'Object' => where { $_->can('does') };
+
1;
__END__
subtype NaturalLessThanTen
=> as Natural
- => where { $_ < 10 };
+ => where { $_ < 10 }
+ => message { "This number ($_) is not less than ten!" };
coerce Num
=> from Str
=> via { 0+$_ };
+
+ enum RGBColors => qw(red green blue);
=head1 DESCRIPTION
could probably use some work, but it works for me at the moment.
Any
- Value
- Int
- Str
- Ref
- ScalarRef
- ArrayRef
- HashRef
- CodeRef
- RegexpRef
- Object
+ Item
+ Bool
+ Undef
+ Defined
+ Value
+ Num
+ Int
+ Str
+ Ref
+ ScalarRef
+ ArrayRef
+ HashRef
+ CodeRef
+ RegexpRef
+ Object
+ Role
Suggestions for improvement are welcome.
This function can be used to locate a specific type constraint
meta-object. What you do with it from there is up to you :)
+=item B<create_type_constraint_union (@type_constraint_names)>
+
+Given a list of C<@type_constraint_names>, this will return a
+B<Moose::Meta::TypeConstraint::Union> instance.
+
=item B<export_type_contstraints_as_functions>
This will export all the current type constraints as functions
This creates a base type, which has no parent.
-=item B<subtype ($name, $parent, $where_clause)>
+=item B<subtype ($name, $parent, $where_clause, ?$message)>
This creates a named subtype.
-=item B<subtype ($parent, $where_clause)>
+=item B<subtype ($parent, $where_clause, ?$message)>
This creates an unnamed subtype and will return the type
constraint meta-object, which will be an instance of
L<Moose::Meta::TypeConstraint>.
+=item B<enum ($name, @values)>
+
=item B<as>
This is just sugar for the type constraint construction syntax.
This library is free software; you can redistribute it and/or modify
it under the same terms as Perl itself.
-=cut
\ No newline at end of file
+=cut
projects / gitmo/Moose.git / blobdiff