Move type coercion mechanism from Util/TypeConstraints.pm to Meta/TypeConstraint.pm

[gitmo/Mouse.git] / lib / Mouse / Meta / Attribute.pm

diff --git a/lib/Mouse/Meta/Attribute.pm b/lib/Mouse/Meta/Attribute.pm
index a9a8431..4b3539f 100644 (file)
--- a/lib/Mouse/Meta/Attribute.pm
+++ b/lib/Mouse/Meta/Attribute.pm
@@ -12,6 +12,12 @@ use Mouse::Meta::Method::Accessor;
 sub _process_options{
     my($class, $name, $args) = @_;
 
+
+    # XXX: for backward compatibility (with method modifiers)
+    if($class->can('canonicalize_args') != \&canonicalize_args){
+        %{$args} = $class->canonicalize_args($name, %{$args});
+    }
+
     # taken from Class::MOP::Attribute::new
 
     defined($name)
@@ -25,8 +31,12 @@ sub _process_options{
     my $can_be_required = defined( $args->{init_arg} );
 
     if(exists $args->{builder}){
+        # XXX:
+        # Moose refuses a CODE ref builder, but Mouse doesn't for backward compatibility
+        # This feature will be changed in a future. (gfx)
         $class->throw_error('builder must be a defined scalar value which is a method name')
-            if ref $args->{builder} || !(defined $args->{builder});
+            #if ref $args->{builder} || !defined $args->{builder};
+            if !defined $args->{builder};
 
         $can_be_required++;
     }
@@ -119,10 +129,6 @@ sub _process_options{
             || $class->throw_error("You cannot have lazy attribute ($name) without specifying a default value for it");
     }
 
-    # XXX: for backward compatibility (with method modifiers)
-    if($class->can('canonicalize_args') != \&canonicalize_args){
-        %{$args} = $class->canonicalize_args($name, %{$args});
-    }
     return;
 }
 
@@ -242,7 +248,8 @@ sub canonicalize_args{
     my ($self, $name, %args) = @_;
 
     Carp::cluck("$self->canonicalize_args has been deprecated."
-        . "Use \$self->_process_options instead.");
+        . "Use \$self->_process_options instead.")
+            if _MOUSE_VERBOSE;
 
     return %args;
 }
@@ -251,21 +258,39 @@ sub create {
     my ($self, $class, $name, %args) = @_;
 
     Carp::cluck("$self->create has been deprecated."
-        . "Use \$meta->add_attribute and \$attr->install_accessors instead.");
+        . "Use \$meta->add_attribute and \$attr->install_accessors instead.")
+            if _MOUSE_VERBOSE;
 
     # noop
     return $self;
 }
 
+sub _coerce_and_verify {
+    my($self, $value, $instance) = @_;
+
+    my $type_constraint = $self->{type_constraint};
+
+    return $value if !$type_constraint;
+
+    if ($self->should_coerce && $type_constraint->has_coercion) {
+        $value = $type_constraint->coerce($value);
+    }
+
+    return $value if $type_constraint->check($value);
+
+    $self->verify_against_type_constraint($value);
+
+    return $value;
+}
+
 sub verify_against_type_constraint {
     my ($self, $value) = @_;
-    my $tc = $self->type_constraint;
-    return 1 unless $tc;
 
-    local $_ = $value;
-    return 1 if $tc->check($value);
+    my $type_constraint = $self->{type_constraint};
+    return 1 if !$type_constraint;;
+    return 1 if $type_constraint->check($value);
 
-    $self->verify_type_constraint_error($self->name, $value, $tc);
+    $self->verify_type_constraint_error($self->name, $value, $type_constraint);
 }
 
 sub verify_type_constraint_error {
@@ -308,8 +333,8 @@ sub clone_parent {
     my %args  = ($self->get_parent_args($class, $name), @_);
 
     Carp::cluck("$self->clone_parent has been deprecated."
-        . "Use \$meta->add_attribute and \$attr->install_accessors instead.");
-
+        . "Use \$meta->add_attribute and \$attr->install_accessors instead.")
+        if _MOUSE_VERBOSE;
 
     $self->clone_and_inherited_args($class, $name, %args);
 }
@@ -328,6 +353,12 @@ sub get_parent_args {
     $self->throw_error("Could not find an attribute by the name of '$name' to inherit from");
 }
 
+sub associate_method{
+    my ($attribute, $method) = @_;
+    $attribute->{associated_methods}++;
+    return;
+}
+
 sub install_accessors{
     my($attribute) = @_;
 
@@ -364,7 +395,7 @@ __END__
 
 =head1 NAME
 
-Mouse::Meta::Attribute - attribute metaclass
+Mouse::Meta::Attribute - The Mouse attribute metaclass
 
 =head1 METHODS
 
@@ -472,6 +503,13 @@ is equivalent to this:
 
 =back
 
+=head2 C<< associate_method(Method) >>
+
+Associates a method with the attribute. Typically, this is called internally
+when an attribute generates its accessors.
+
+Currently the argument I<Method> is ignored in Mouse.
+
 =head2 C<< verify_against_type_constraint(Item) -> TRUE | ERROR >>
 
 Checks that the given value passes this attribute's type constraint. Returns C<true>
@@ -486,5 +524,7 @@ Accessors and helper methods are installed. Some error checking is done.
 
 L<Moose::Meta::Attribute>
 
+L<Class::MOP::Attribute>
+
 =cut