-#!/usr/bin/env perl
package Mouse::Meta::Attribute;
use strict;
use warnings;
require overload;
use Carp 'confess';
-require Mouse::Util;
+use Scalar::Util ();
sub new {
- my $class = shift;
- my %args = @_;
+ my ($class, $name, %options) = @_;
- my $name = $args{name};
+ $options{name} = $name;
- $args{init_arg} = $name
- unless exists $args{init_arg};
+ $options{init_arg} = $name
+ unless exists $options{init_arg};
- $args{is} ||= '';
+ $options{is} ||= '';
- bless \%args, $class;
+ bless \%options, $class;
}
-sub name { $_[0]->{name} }
-sub associated_class { $_[0]->{associated_class} }
-sub _is_metadata { $_[0]->{is} }
-sub is_required { $_[0]->{required} }
-sub default { $_[0]->{default} }
-sub is_lazy { $_[0]->{lazy} }
-sub is_lazy_build { $_[0]->{lazy_build} }
-sub predicate { $_[0]->{predicate} }
-sub clearer { $_[0]->{clearer} }
-sub handles { $_[0]->{handles} }
-sub is_weak_ref { $_[0]->{weak_ref} }
-sub init_arg { $_[0]->{init_arg} }
-sub type_constraint { $_[0]->{type_constraint} }
-sub trigger { $_[0]->{trigger} }
-sub builder { $_[0]->{builder} }
-sub should_auto_deref { $_[0]->{auto_deref} }
-sub should_coerce { $_[0]->{should_coerce} }
-
-sub has_default { exists $_[0]->{default} }
-sub has_predicate { exists $_[0]->{predicate} }
-sub has_clearer { exists $_[0]->{clearer} }
-sub has_handles { exists $_[0]->{handles} }
-sub has_type_constraint { exists $_[0]->{type_constraint} }
-sub has_trigger { exists $_[0]->{trigger} }
-sub has_builder { exists $_[0]->{builder} }
-
-sub find_type_constraint { $_[0]->{find_type_constraint} }
+sub name { $_[0]->{name} }
+sub associated_class { $_[0]->{associated_class} }
+sub _is_metadata { $_[0]->{is} }
+sub is_required { $_[0]->{required} }
+sub default { $_[0]->{default} }
+sub is_lazy { $_[0]->{lazy} }
+sub is_lazy_build { $_[0]->{lazy_build} }
+sub predicate { $_[0]->{predicate} }
+sub clearer { $_[0]->{clearer} }
+sub handles { $_[0]->{handles} }
+sub is_weak_ref { $_[0]->{weak_ref} }
+sub init_arg { $_[0]->{init_arg} }
+sub type_constraint { $_[0]->{type_constraint} }
+sub trigger { $_[0]->{trigger} }
+sub builder { $_[0]->{builder} }
+sub should_auto_deref { $_[0]->{auto_deref} }
+sub should_coerce { $_[0]->{should_coerce} }
+sub find_type_constraint { $_[0]->{find_type_constraint} }
+
+sub has_default { exists $_[0]->{default} }
+sub has_predicate { exists $_[0]->{predicate} }
+sub has_clearer { exists $_[0]->{clearer} }
+sub has_handles { exists $_[0]->{handles} }
+sub has_type_constraint { exists $_[0]->{type_constraint} }
+sub has_trigger { exists $_[0]->{trigger} }
+sub has_builder { exists $_[0]->{builder} }
sub _create_args {
$_[0]->{_create_args} = $_[1] if @_ > 1;
my $accessor = "sub {\n";
if ($attribute->_is_metadata eq 'rw') {
- $accessor .= 'if (scalar(@_) >= 2) {' . "\n";
+ $accessor .= 'if (@_ >= 2) {' . "\n";
my $value = '$_[1]';
if ($constraint) {
$accessor .= 'my $val = ';
if ($should_coerce) {
- $accessor .= 'Mouse::TypeRegistry->typecast_constraints("'.$attribute->associated_class->name.'", $attribute->{find_type_constraint}, $attribute->{type_constraint}, '.$value.');';
+ $accessor .= 'Mouse::Util::TypeConstraints->typecast_constraints("'.$attribute->associated_class->name.'", $attribute->{find_type_constraint}, $attribute->{type_constraint}, '.$value.');';
} else {
$accessor .= $value.';';
}
- $accessor .= 'local $_ = $val;';
$accessor .= '
- unless ($constraint->()) {
- $attribute->verify_type_constraint_error($name, $_, $attribute->type_constraint);
+ unless ($constraint->($val)) {
+ $attribute->verify_type_constraint_error($name, $val, $attribute->type_constraint);
}' . "\n";
$value = '$val';
}
$accessor .= $self.'->{'.$key.'} = '.$value.';' . "\n";
if ($is_weak) {
- $accessor .= 'Mouse::Util::weaken('.$self.'->{'.$key.'}) if ref('.$self.'->{'.$key.'});' . "\n";
+ $accessor .= 'Scalar::Util::weaken('.$self.'->{'.$key.'}) if ref('.$self.'->{'.$key.'});' . "\n";
}
if ($trigger) {
- $accessor .= '$trigger->('.$self.', '.$value.', $attribute);' . "\n";
+ $accessor .= '$trigger->('.$self.', '.$value.');' . "\n";
}
$accessor .= "}\n";
my $method = 'sub {
my $self = shift;
- $self->$reader->$remote_method(@_)
+ $self->'.$reader.'->'.$remote_method.'(@_)
}';
$method_map{$local_method} = eval $method;
return \%method_map;
}
+my $optimized_constraints;
+sub _build_type_constraint {
+ my $spec = shift;
+ $optimized_constraints ||= Mouse::Util::TypeConstraints->optimized_constraints;
+ my $code;
+ if ($spec =~ /^([^\[]+)\[(.+)\]$/) {
+ # parameterized
+ my $constraint = $1;
+ my $param = $2;
+ my $parent = _build_type_constraint($constraint);
+ my $child = _build_type_constraint($param);
+ if ($constraint eq 'ArrayRef') {
+ my $code_str =
+ "sub {\n" .
+ " if (\$parent->(\$_)) {\n" .
+ " foreach my \$e (@\$_) {\n" .
+ " local \$_ = \$e;\n" .
+ " return () unless \$child->(\$_);\n" .
+ " }\n" .
+ " return 1;\n" .
+ " }\n" .
+ " return ();\n" .
+ "};\n"
+ ;
+ $code = eval $code_str or Carp::confess($@);
+ } elsif ($constraint eq 'HashRef') {
+ my $code_str =
+ "sub {\n" .
+ " if (\$parent->(\$_)) {\n" .
+ " foreach my \$e (values %\$_) {\n" .
+ " local \$_ = \$e;\n" .
+ " return () unless \$child->(\$_);\n" .
+ " }\n" .
+ " return 1;\n" .
+ " }\n" .
+ " return ();\n" .
+ "};\n"
+ ;
+ $code = eval $code_str or Carp::confess($@);
+ } else {
+ Carp::confess("Support for parameterized types other than ArrayRef or HashRef is not implemented yet");
+ }
+ $optimized_constraints->{$spec} = $code;
+ } else {
+ $code = $optimized_constraints->{ $spec };
+ if (! $code) {
+ $code = sub { Scalar::Util::blessed($_[0]) && $_[0]->isa($spec) };
+ $optimized_constraints->{$spec} = $code;
+ }
+ }
+ return $code;
+}
+
sub create {
my ($self, $class, $name, %args) = @_;
if exists $args{coerce};
if (exists $args{isa}) {
+ confess "Got isa => $args{isa}, but Mouse does not yet support parameterized types for containers other than ArrayRef and HashRef (rt.cpan.org #39795)"
+ if $args{isa} =~ /^([^\[]+)\[.+\]$/ &&
+ $1 ne 'ArrayRef' &&
+ $1 ne 'HashRef';
+
my $type_constraint = delete $args{isa};
$type_constraint =~ s/\s//g;
my @type_constraints = split /\|/, $type_constraint;
my $code;
- my $optimized_constraints = Mouse::TypeRegistry->optimized_constraints;
if (@type_constraints == 1) {
- $code = $optimized_constraints->{$type_constraints[0]} ||
- sub { Mouse::Util::blessed($_) && Mouse::Util::blessed($_) eq $type_constraints[0] };
+ $code = _build_type_constraint($type_constraints[0]);
$args{type_constraint} = $type_constraints[0];
} else {
my @code_list = map {
- my $type = $_;
- $optimized_constraints->{$type} ||
- sub { Mouse::Util::blessed($_) && Mouse::Util::blessed($_) eq $type }
+ _build_type_constraint($_)
} @type_constraints;
$code = sub {
+ local $_ = $_[0];
for my $code (@code_list) {
- return 1 if $code->();
+ return 1 if $code->($_);
}
return 0;
};
$args{find_type_constraint} = $code;
}
- my $attribute = $self->new(%args);
+ my $attribute = $self->new($name, %args);
$attribute->_create_args(\%args);
return 1;
}
-sub verify_type_constraint {
+sub verify_against_type_constraint {
return 1 unless $_[0]->{type_constraint};
local $_ = $_[1];
sub verify_type_constraint_error {
my($self, $name, $value, $type) = @_;
$type = ref($type) eq 'ARRAY' ? join '|', @{ $type } : $type;
- my $display = defined($_) ? overload::StrVal($_) : 'undef';
+ my $display = defined($value) ? overload::StrVal($value) : 'undef';
Carp::confess("Attribute ($name) does not pass the type constraint because: Validation failed for \'$type\' failed with value $display");
}
sub coerce_constraint { ## my($self, $value) = @_;
my $type = $_[0]->{type_constraint}
or return $_[1];
- return Mouse::TypeRegistry->typecast_constraints($_[0]->associated_class->name, $_[0]->find_type_constraint, $type, $_[1]);
+ return Mouse::Util::TypeConstraints->typecast_constraints($_[0]->associated_class->name, $_[0]->find_type_constraint, $type, $_[1]);
}
sub _canonicalize_handles {
Returns a code reference which can be used to check that a given value passes
this attribute's type constraint;
-=head2 verify_type_constraint Item -> 1 | ERROR
+=head2 verify_against_type_constraint Item -> 1 | ERROR
Checks that the given value passes this attribute's type constraint. Returns 1
on success, otherwise C<confess>es.
projects / gitmo/Mouse.git / blobdiff