package Mouse::Util::TypeConstraints;
-use strict;
-use warnings;
-
-use Exporter;
+use Mouse::Util qw(does_role not_supported); # enables strict and warnings
use Carp qw(confess);
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;
+use Mouse::Exporter;
-use constant _DEBUG => !!$ENV{TC_DEBUG};
+Mouse::Exporter->setup_import_methods(
+ as_is => [qw(
+ as where message from via
+ type subtype coerce class_type role_type enum
+ find_type_constraint
+ )],
-our @ISA = qw(Exporter);
-our @EXPORT = qw(
- as where message from via type subtype coerce class_type role_type enum
- find_type_constraint
+ _export_to_main => 1,
);
my %TYPE;
-my %COERCE;
-my %COERCE_KEYS;
sub as ($) {
return(as => $_[0]);
);
}
- sub optimized_constraints {
+ sub optimized_constraints { # DEPRECATED
Carp::cluck('optimized_constraints() has been deprecated');
return \%TYPE;
}
}
$args{name} = $name;
+ my $parent;
+ if($mode eq 'subtype'){
+ $parent = delete $args{as};
+ if(!$parent){
+ $parent = delete $args{name};
+ $name = '__ANON__';
+ }
+ }
my $package_defined_in = $args{package_defined_in} ||= caller(1);
. "$existing->{package_defined_in} and cannot be created again in $package_defined_in");
}
- $args{constraint} = delete($args{where}) if exists $args{where};
+ $args{constraint} = delete $args{where} if exists $args{where};
$args{optimized} = delete $args{optimized_as} if exists $args{optimized_as};
my $constraint;
if($mode eq 'subtype'){
- my $parent = delete($args{as})
- or confess('A subtype cannot consist solely of a name, it must have a parent');
-
$constraint = find_or_create_isa_type_constraint($parent)->create_child_type(%args);
}
else{
}
sub coerce {
- my $name = shift;
-
- $name =~ s/\s+//g;
- confess "Cannot find type '$name', perhaps you forgot to load it."
- unless $TYPE{$name};
-
- unless ($COERCE{$name}) {
- $COERCE{$name} = {};
- $COERCE_KEYS{$name} = [];
- }
-
- my $package_defined_in = caller;
-
- while (my($from, $action) = splice @_, 0, 2) {
- $from =~ s/\s+//g;
-
- confess "A coercion action already exists for '$from'"
- if $COERCE{$name}->{$from};
-
- my $type = find_or_parse_type_constraint($from, $package_defined_in);
- if (!$type) {
- confess "Could not find the type constraint ($from) to coerce from"
- }
+ my $type_name = shift;
- warn "# REGISTER COERCE $name, from $type\n" if _DEBUG;
+ my $type = find_type_constraint($type_name)
+ or confess("Cannot find type '$type_name', perhaps you forgot to load it.");
- push @{ $COERCE_KEYS{$name} }, $type;
- $COERCE{$name}->{$from} = $action;
- }
+ $type->_add_type_coercions(@_);
return;
}
);
}
-# this is an original method for Mouse
-sub typecast_constraints {
- my($class, $pkg, $types, $value) = @_;
+sub typecast_constraints { # DEPRECATED
+ my($class, $pkg, $type, $value) = @_;
Carp::croak("wrong arguments count") unless @_ == 4;
- local $_;
- for my $type ($types->{type_constraints} ? @{$types->{type_constraints}} : $types ) {
- for my $coerce_type (@{ $COERCE_KEYS{$type}}) {
-
- if(_DEBUG){
- warn sprintf "# COERCE: from %s to %s for %s (%s)\n",
- $coerce_type, $type, defined($value) ? "'$value'" : 'undef',
- $coerce_type->check($value) ? "try" : "skip";
- }
-
- next if !$coerce_type->check($value);
-
- # try to coerce
- $_ = $value;
- my $coerced = $COERCE{$type}->{$coerce_type}->($value); # coerce
-
- if(_DEBUG){
- warn sprintf "# COERCE: got %s, which is%s %s\n",
- defined($coerced) ? $coerced : 'undef', $types->check($coerced) ? '' : ' not', $types;
- }
+ Carp::cluck("typecast_constraints() has been deprecated, which was an internal utility anyway");
- # check with $types, not $constraint
- return $coerced if $types->check($coerced);
- }
- }
- return $value; # returns original $value
+ return $type->coerce($value);
}
sub enum {
return $TYPE{$spec} if exists $TYPE{$spec};
- my $meta = Mouse::Meta::Module::class_of($spec);
+ my $meta = Mouse::Util::get_metaclass_by_name($spec);
if(!$meta){
return;
$type = 'Class';
}
- warn "#CREATE a $type type for $spec\n" if _DEBUG;
-
return $TYPE{$spec} = Mouse::Meta::TypeConstraint->new(
name => $spec,
optimized => $check,
my $name = sprintf '%s[%s]', $base->name, $param->name;
$TYPE{$name} ||= do{
- warn "#CREATE a Parameterized type for $name\n" if _DEBUG;
-
my $generator = $base->{constraint_generator};
if(!$generator){
}
}
sub _find_or_create_union_type{
- my @types = map{ $_->{type_constraints} ? @{$_->{type_constraints}} : $_ } @_;
+ my @types = sort{ $a cmp $b } map{ $_->{type_constraints} ? @{$_->{type_constraints}} : $_ } @_;
- my $name = join '|', map{ $_->name } @types;
+ my $name = join '|', @types;
$TYPE{$name} ||= do{
- warn "# CREATE a Union type for ", Mouse::Util::english_list(@types),"\n" if _DEBUG;
-
return Mouse::Meta::TypeConstraint->new(
name => $name,
type_constraints => \@types,
}
sub find_or_create_does_type_constraint{
- my $type = find_or_parse_type_constriant(@_) || role_type(@_);
+ my $type = find_or_parse_type_constraint(@_) || role_type(@_);
if($type->{type} && $type->{type} ne 'Role'){
Carp::cluck("$type is not a role type");