more-tweaks

[gitmo/Moose.git] / lib / Moose / Meta / Class.pm

diff --git a/lib/Moose/Meta/Class.pm b/lib/Moose/Meta/Class.pm
index 5d5f1af..76f42f3 100644 (file)
--- a/lib/Moose/Meta/Class.pm
+++ b/lib/Moose/Meta/Class.pm
@@ -4,8 +4,37 @@ package Moose::Meta::Class;
 use strict;
 use warnings;
 
+use Carp 'confess';
+
+our $VERSION = '0.02';
+
 use base 'Class::MOP::Class';
 
+sub construct_instance {
+    my ($class, %params) = @_;
+    my $instance = $params{'__INSTANCE__'} || {};
+    foreach my $attr ($class->compute_all_applicable_attributes()) {
+        my $init_arg = $attr->init_arg();
+        # try to fetch the init arg from the %params ...
+        my $val;        
+        $val = $params{$init_arg} if exists $params{$init_arg};
+        # if nothing was in the %params, we can use the 
+        # attribute's default value (if it has one)
+        $val ||= $attr->default($instance) if $attr->has_default; 
+               if (defined $val) {
+                   if ($attr->has_type_constraint) {
+                   if ($attr->should_coerce && $attr->type_constraint->has_coercion) {
+                       $val = $attr->type_constraint->coercion->coerce($val);
+                   }   
+                (defined($attr->type_constraint->check($val))) 
+                    || confess "Attribute (" . $attr->name . ") does not pass the type contraint with '$val'";                 
+            }
+               }
+        $instance->{$attr->name} = $val;
+    }
+    return $instance;
+}
+
 1;
 
 __END__
@@ -14,16 +43,23 @@ __END__
 
 =head1 NAME
 
-Moose::Meta::Class - 
+Moose::Meta::Class - The Moose metaclass
 
 =head1 SYNOPSIS
 
 =head1 DESCRIPTION
 
+This is a subclass of L<Class::MOP::Class> with Moose specific 
+extensions.
+
 =head1 METHODS
 
 =over 4
 
+=item B<construct_instance>
+
+=item B<mixed_in>
+
 =back
 
 =head1 BUGS
@@ -32,13 +68,6 @@ All complex software has bugs lurking in it, and this module is no
 exception. If you find a bug please either email me, or add the bug
 to cpan-RT.
 
-=head1 CODE COVERAGE
-
-I use L<Devel::Cover> to test the code coverage of my tests, below is the 
-L<Devel::Cover> report on this module's test suite.
-
-=head1 ACKNOWLEDGEMENTS
-
 =head1 AUTHOR
 
 Stevan Little E<lt>stevan@iinteractive.comE<gt>