package Mouse::Meta::Attribute;
use strict;
use warnings;
+require overload;
use Carp 'confess';
-use Mouse::Util qw/blessed weaken/;
+require Mouse::Util;
sub new {
my $class = shift;
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} }
$_[0]->{_create_args}
}
+sub inlined_name {
+ my $self = shift;
+ my $name = $self->name;
+ my $key = "'" . $name . "'";
+ return $key;
+}
+
sub generate_accessor {
my $attribute = shift;
- my $name = $attribute->name;
- my $key = $name;
- my $default = $attribute->default;
- my $type = $attribute->type_constraint;
- my $constraint = $attribute->find_type_constraint;
- my $builder = $attribute->builder;
- my $trigger = $attribute->trigger;
+ my $name = $attribute->name;
+ my $default = $attribute->default;
+ my $type = $attribute->type_constraint;
+ my $constraint = $attribute->find_type_constraint;
+ my $builder = $attribute->builder;
+ my $trigger = $attribute->trigger;
+ my $is_weak = $attribute->is_weak_ref;
+ my $should_deref = $attribute->should_auto_deref;
+ my $should_coerce = $attribute->should_coerce;
- my $accessor = 'sub {
- my $self = shift;';
+ my $self = '$_[0]';
+ my $key = $attribute->inlined_name;
+ my $accessor = "sub {\n";
if ($attribute->_is_metadata eq 'rw') {
- $accessor .= 'if (@_) {
- ';
+ $accessor .= 'if (scalar(@_) >= 2) {' . "\n";
+
+ my $value = '$_[1]';
if ($constraint) {
- $accessor .= 'local $_ = $_[0];
+ if ($should_coerce) {
+ $accessor .= $value.' = $attribute->coerce_constraint('.$value.');';
+ }
+ $accessor .= 'local $_ = '.$value.';';
+ $accessor .= '
unless ($constraint->()) {
my $display = defined($_) ? overload::StrVal($_) : "undef";
Carp::confess("Attribute ($name) does not pass the type constraint because: Validation failed for \'$type\' failed with value $display");
- }'
+ }' . "\n"
}
- $accessor .= '$self->{$key} = $_[0];';
+ # if there's nothing left to do for the attribute we can return during
+ # this setter
+ $accessor .= 'return ' if !$is_weak && !$trigger && !$should_deref;
+
+ $accessor .= $self.'->{'.$key.'} = '.$value.';' . "\n";
- if ($attribute->is_weak_ref) {
- $accessor .= 'weaken($self->{$key}) if ref($self->{$key});';
+ if ($is_weak) {
+ $accessor .= 'Mouse::Util::weaken('.$self.'->{'.$key.'}) if ref('.$self.'->{'.$key.'});' . "\n";
}
if ($trigger) {
- $accessor .= '$trigger->($self, $_[0], $attribute);';
+ $accessor .= '$trigger->('.$self.', '.$value.', $attribute);' . "\n";
}
- $accessor .= '}';
+ $accessor .= "}\n";
}
else {
- $accessor .= 'confess "Cannot assign a value to a read-only accessor" if @_;';
+ $accessor .= 'confess "Cannot assign a value to a read-only accessor" if scalar(@_) >= 2;' . "\n";
}
if ($attribute->is_lazy) {
- $accessor .= '$self->{$key} = ';
+ $accessor .= $self.'->{'.$key.'} = ';
$accessor .= $attribute->has_builder
- ? '$self->$builder'
- : ref($default) eq 'CODE'
- ? '$default->($self)'
- : '$default';
-
- $accessor .= ' if !exists($self->{$key});';
+ ? $self.'->$builder'
+ : ref($default) eq 'CODE'
+ ? '$default->('.$self.')'
+ : '$default';
+ $accessor .= ' if !exists '.$self.'->{'.$key.'};' . "\n";
}
- if ($attribute->should_auto_deref) {
+ if ($should_deref) {
if ($attribute->type_constraint eq 'ArrayRef') {
$accessor .= 'if (wantarray) {
- return @{ $self->{$key} || [] };
+ return @{ '.$self.'->{'.$key.'} || [] };
}';
}
else {
$accessor .= 'if (wantarray) {
- return %{ $self->{$key} || {} };
+ return %{ '.$self.'->{'.$key.'} || {} };
}';
}
}
- $accessor .= 'return $self->{$key};
+ $accessor .= 'return '.$self.'->{'.$key.'};
}';
my $sub = eval $accessor;
sub generate_predicate {
my $attribute = shift;
- my $key = $attribute->name;
+ my $key = $attribute->inlined_name;
- my $predicate = 'sub { exists($_[0]->{$key}) }';
+ my $predicate = 'sub { exists($_[0]->{'.$key.'}) }';
my $sub = eval $predicate;
confess $@ if $@;
sub generate_clearer {
my $attribute = shift;
- my $key = $attribute->name;
+ my $key = $attribute->inlined_name;
- my $clearer = 'sub { delete($_[0]->{$key}) }';
+ my $clearer = 'sub { delete($_[0]->{'.$key.'}) }';
my $sub = eval $clearer;
confess $@ if $@;
%args = $self->canonicalize_args($name, %args);
$self->validate_args($name, \%args);
+ $args{should_coerce} = delete $args{coerce}
+ if exists $args{coerce};
+
$args{type_constraint} = delete $args{isa}
if exists $args{isa};
return unless $type;
- my $checker = Mouse::TypeRegistry->optimized_constraints->{$type};
+ my $checker = Mouse::TypeRegistry->optimized_constraints()->{$type};
return $checker if $checker;
- return sub { blessed($_) && blessed($_) eq $type };
+ return sub { Mouse::Util::blessed($_) && Mouse::Util::blessed($_) eq $type };
}
sub verify_type_constraint {
Carp::confess("Attribute ($name) does not pass the type constraint because: Validation failed for \'$type\' failed with value $display");
}
+sub coerce_constraint {
+ my($self, $value) = @_;
+ my $type = $self->type_constraint
+ or return $value;
+ return Mouse::TypeRegistry->typecast_constraints($self->associated_class->name, $type, $value);
+}
+
sub _canonicalize_handles {
my $self = shift;
my $handles = shift;