package Mouse::Util::TypeConstraints;
use strict;
use warnings;
-use base 'Exporter';
+
+use Exporter;
use Carp ();
use Scalar::Util qw/blessed looks_like_number openhandle/;
+
+use Mouse::Util qw(does_role not_supported);
+use Mouse::Meta::Module; # class_of
use Mouse::Meta::TypeConstraint;
+our @ISA = qw(Exporter);
our @EXPORT = qw(
as where message from via type subtype coerce class_type role_type enum
find_type_constraint
my %COERCE_KEYS;
sub as ($) {
- as => $_[0]
+ return(as => $_[0]);
}
sub where (&) {
- where => $_[0]
+ return(where => $_[0])
}
sub message (&) {
- message => $_[0]
+ return(message => $_[0])
}
-sub from { @_ }
-sub via (&) {
- $_[0]
-}
+sub from { @_ }
+sub via (&) { $_[0] }
BEGIN {
- no warnings 'uninitialized';
- %TYPE = (
+ my %builtins = (
Any => sub { 1 },
Item => sub { 1 },
- Bool => sub {
- !defined($_[0]) || $_[0] eq "" || "$_[0]" eq '1' || "$_[0]" eq '0'
- },
+
+ Bool => sub { $_[0] ? $_[0] eq '1' : 1 },
Undef => sub { !defined($_[0]) },
Defined => sub { defined($_[0]) },
Value => sub { defined($_[0]) && !ref($_[0]) },
Num => sub { !ref($_[0]) && looks_like_number($_[0]) },
Int => sub { defined($_[0]) && !ref($_[0]) && $_[0] =~ /^-?[0-9]+$/ },
Str => sub { defined($_[0]) && !ref($_[0]) },
- ClassName => sub { Mouse::is_class_loaded($_[0]) },
Ref => sub { ref($_[0]) },
ScalarRef => sub { ref($_[0]) eq 'SCALAR' },
},
Object => sub { blessed($_[0]) && blessed($_[0]) ne 'Regexp' },
+
+ ClassName => sub { Mouse::Util::is_class_loaded($_[0]) },
+ RoleName => sub { (Mouse::Util::find_meta($_[0]) || return 0)->isa('Mouse::Meta::Role') },
);
- while (my ($name, $code) = each %TYPE) {
- $TYPE{$name} = Mouse::Meta::TypeConstraint->new( _compiled_type_constraint => $code, name => $name );
+
+ while (my ($name, $code) = each %builtins) {
+ $TYPE{$name} = Mouse::Meta::TypeConstraint->new(
+ name => $name,
+ _compiled_type_constraint => $code,
+ );
+ $TYPE_SOURCE{$name} = __PACKAGE__;
}
sub optimized_constraints { \%TYPE }
- my @TYPE_KEYS = keys %TYPE;
- sub list_all_builtin_type_constraints { @TYPE_KEYS }
- @TYPE_SOURCE{@TYPE_KEYS} = (__PACKAGE__) x @TYPE_KEYS;
+ my @builtins = keys %TYPE;
+ sub list_all_builtin_type_constraints { @builtins }
+
+ sub list_all_type_constraints { keys %TYPE }
}
sub type {
- my $pkg = caller(0);
- my($name, %conf) = @_;
+ my $name;
+ my %conf;
+
+ if(@_ == 1 && ref $_[0]){ # type { where => ... }
+ %conf = %{$_[0]};
+ }
+ elsif(@_ == 2 && ref $_[1]){ # type $name => { where => ... }*
+ $name = $_[0];
+ %conf = %{$_[1]};
+ }
+ elsif(@_ % 2){ # odd number of arguments
+ $name = shift;
+ %conf = @_;
+ }
+ else{
+ %conf = @_;
+ }
+
+ $name = '__ANON__' if !defined $name;
+
+ my $pkg = caller;
+
if ($TYPE{$name} && $TYPE_SOURCE{$name} ne $pkg) {
Carp::croak "The type constraint '$name' has already been created in $TYPE_SOURCE{$name} and cannot be created again in $pkg";
- };
+ }
+
my $constraint = $conf{where} || do {
my $as = delete $conf{as} || 'Any';
- if (! exists $TYPE{$as}) {
- $TYPE{$as} = _build_type_constraint($as);
- }
- $TYPE{$as};
+ ($TYPE{$as} ||= _build_type_constraint($as))->{_compiled_type_constraint};
};
- $TYPE_SOURCE{$name} = $pkg;
- $TYPE{$name} = Mouse::Meta::TypeConstraint->new(
- name => $name,
+ my $tc = Mouse::Meta::TypeConstraint->new(
+ name => $name,
_compiled_type_constraint => sub {
local $_ = $_[0];
- if (ref $constraint eq 'CODE') {
- $constraint->($_[0])
- } else {
- $constraint->check($_[0])
- }
- }
+ return &{$constraint};
+ },
);
+
+ $TYPE_SOURCE{$name} = $pkg;
+ $TYPE{$name} = $tc;
+
+ return $tc;
}
sub subtype {
- my $pkg = caller(0);
- my($name, %conf) = @_;
+ my $name;
+ my %conf;
+
+ if(@_ == 1 && ref $_[0]){ # type { where => ... }
+ %conf = %{$_[0]};
+ }
+ elsif(@_ == 2 && ref $_[1]){ # type $name => { where => ... }*
+ $name = $_[0];
+ %conf = %{$_[1]};
+ }
+ elsif(@_ % 2){ # odd number of arguments
+ $name = shift;
+ %conf = @_;
+ }
+ else{
+ %conf = @_;
+ }
+
+ $name = '__ANON__' if !defined $name;
+
+ my $pkg = caller;
+
if ($TYPE{$name} && $TYPE_SOURCE{$name} ne $pkg) {
Carp::croak "The type constraint '$name' has already been created in $TYPE_SOURCE{$name} and cannot be created again in $pkg";
- };
- my $constraint = $conf{where};
- my $as_constraint = find_or_create_isa_type_constraint($conf{as} || 'Any');
+ }
- $TYPE_SOURCE{$name} = $pkg;
- $TYPE{$name} = Mouse::Meta::TypeConstraint->new(
+ my $constraint = delete $conf{where};
+ my $as_constraint = find_or_create_isa_type_constraint(delete $conf{as} || 'Any')
+ ->{_compiled_type_constraint};
+
+ my $tc = Mouse::Meta::TypeConstraint->new(
name => $name,
_compiled_type_constraint => (
$constraint ?
sub {
local $_ = $_[0];
- $as_constraint->check($_[0]) && $constraint->($_[0])
+ $as_constraint->($_[0]) && $constraint->($_[0])
} :
sub {
local $_ = $_[0];
- $as_constraint->check($_[0]);
+ $as_constraint->($_[0]);
}
),
+ %conf,
);
- return $name;
+ $TYPE_SOURCE{$name} = $pkg;
+ $TYPE{$name} = $tc;
+
+ return $tc;
}
sub coerce {
- my($name, %conf) = @_;
+ my $name = shift;
Carp::croak "Cannot find type '$name', perhaps you forgot to load it."
unless $TYPE{$name};
$COERCE{$name} = {};
$COERCE_KEYS{$name} = [];
}
- while (my($type, $code) = each %conf) {
+
+ while (my($type, $code) = splice @_, 0, 2) {
Carp::croak "A coercion action already exists for '$type'"
if $COERCE{$name}->{$type};
}
}
- unshift @{ $COERCE_KEYS{$name} }, $type;
+ push @{ $COERCE_KEYS{$name} }, $type;
$COERCE{$name}->{$type} = $code;
}
+ return;
}
sub class_type {
if ($conf && $conf->{class}) {
# No, you're using this wrong
warn "class_type() should be class_type(ClassName). Perhaps you're looking for subtype $name => as '$conf->{class}'?";
- subtype($name, as => $conf->{class});
- } else {
- subtype(
- $name => where => sub { $_->isa($name) }
+ subtype $name => (as => $conf->{class});
+ }
+ else {
+ subtype $name => (
+ where => sub { blessed($_) && $_->isa($name) },
);
}
}
sub role_type {
my($name, $conf) = @_;
my $role = $conf->{role};
- subtype(
- $name => where => sub {
- return unless defined $_ && ref($_) && $_->isa('Mouse::Object');
- $_->meta->does_role($role);
- }
+ subtype $name => (
+ where => sub { does_role($_, $role) },
);
}
# this is an original method for Mouse
sub typecast_constraints {
my($class, $pkg, $types, $value) = @_;
- Carp::croak("wrong arguments count") unless @_==4;
+ Carp::croak("wrong arguments count") unless @_ == 4;
local $_;
for my $type ( split /\|/, $types ) {
}
sub _build_type_constraint {
+ my($spec) = @_;
- my $spec = shift;
my $code;
$spec =~ s/\s+//g;
- if ($spec =~ /^([^\[]+)\[(.+)\]$/) {
+
+ if ($spec =~ /\A (\w+) \[ (.+) \] \z/xms) {
# parameterized
my $constraint = $1;
my $param = $2;
my $parent;
+
if ($constraint eq 'Maybe') {
$parent = _build_type_constraint('Undef');
- } else {
+ }
+ else {
$parent = _build_type_constraint($constraint);
}
my $child = _build_type_constraint($param);
}
sub find_type_constraint {
- my $type_constraint = shift;
- return $TYPE{$type_constraint};
+ my($type) = @_;
+ if(blessed($type) && $type->isa('Mouse::Meta::TypeConstraint')){
+ return $type;
+ }
+ else{
+ return $TYPE{$type};
+ }
+}
+
+sub find_or_create_does_type_constraint{
+ not_supported;
}
sub find_or_create_isa_type_constraint {
my $type_constraint = shift;
- my $code;
+ Carp::confess("Got isa => type_constraints, but Mouse does not yet support parameterized types for containers other than ArrayRef and HashRef and Maybe (rt.cpan.org #39795)")
+ if $type_constraint =~ /\A ( [^\[]+ ) \[\.+\] \z/xms &&
+ $1 ne 'ArrayRef' &&
+ $1 ne 'HashRef' &&
+ $1 ne 'Maybe'
+ ;
+
$type_constraint =~ s/\s+//g;
- $code = $TYPE{$type_constraint};
- if (! $code) {
+ my $tc = find_type_constraint($type_constraint);
+ if (!$tc) {
my @type_constraints = split /\|/, $type_constraint;
if (@type_constraints == 1) {
- $code = $TYPE{$type_constraints[0]} ||
+ $tc = $TYPE{$type_constraints[0]} ||
_build_type_constraint($type_constraints[0]);
- } else {
+ }
+ else {
my @code_list = map {
$TYPE{$_} || _build_type_constraint($_)
} @type_constraints;
- $code = Mouse::Meta::TypeConstraint->new(
+
+ $tc = Mouse::Meta::TypeConstraint->new(
+ name => $type_constraint,
+
_compiled_type_constraint => sub {
- my $i = 0;
- for my $code (@code_list) {
+ foreach my $code (@code_list) {
return 1 if $code->check($_[0]);
}
return 0;
},
- name => $type_constraint,
);
}
}
- return $code;
+ return $tc;
}
1;
=over 4
-=item B<subtype 'Name' => as 'Parent' => where { } ...>
+=item C<< subtype 'Name' => as 'Parent' => where { } ... -> Mouse::Meta::TypeConstraint >>
-=item B<subtype as 'Parent' => where { } ...>
+=item C<< subtype as 'Parent' => where { } ... -> Mouse::Meta::TypeConstraint >>
-=item B<class_type ($class, ?$options)>
+=item C<< class_type ($class, ?$options) -> Mouse::Meta::TypeConstraint >>
-=item B<role_type ($role, ?$options)>
+=item C<< role_type ($role, ?$options) -> Mouse::Meta::TypeConstraint >>
-=item B<enum (\@values)>
+=item C<< enum (\@values) -> Mouse::Meta::TypeConstraint >>
+
+=back
+
+=over 4
+
+=item C<< find_type_constraint(Type) -> Mouse::Meta::TypeConstraint >>
=back
=head1 THANKS
-Much of this documentation was taken from L<Moose::Util::TypeConstraints>
+Much of this documentation was taken from C<Moose::Util::TypeConstraints>
+
+=head1 SEE ALSO
+
+L<Moose::Util::TypeConstraints>
=cut
projects / gitmo/Mouse.git / blobdiff