X-Git-Url: http://git.shadowcat.co.uk/gitweb/gitweb.cgi?a=blobdiff_plain;f=lib%2FMouse%2FObject.pm;h=bac4fa03fae405122f2f61d7ae715c4462e5a5d2;hb=c9aefe2628c559c55abe2ddc8de6c92a5d9dbbaf;hp=1dd548152e783e0d11b01ad4faf63e9e7e7e3bb2;hpb=1be61030b949daee746b57e7135202c27eeb1c2f;p=gitmo%2FMouse.git

diff --git a/lib/Mouse/Object.pm b/lib/Mouse/Object.pm
index 1dd5481..bac4fa0 100644
--- a/lib/Mouse/Object.pm
+++ b/lib/Mouse/Object.pm
@@ -1,65 +1,80 @@
-#!/usr/bin/env perl
 package Mouse::Object;
 use strict;
 use warnings;
-use MRO::Compat;
 
-use Scalar::Util 'blessed';
+use Scalar::Util 'weaken';
 use Carp 'confess';
 
 sub new {
     my $class = shift;
-    my %args  = @_;
+
+    my $args = $class->BUILDARGS(@_);
+
     my $instance = bless {}, $class;
 
-    for my $attribute ($class->meta->attributes) {
-        my $key = $attribute->init_arg;
-        my $default;
+    for my $attribute ($class->meta->compute_all_applicable_attributes) {
+        my $from = $attribute->init_arg;
+        my $key  = $attribute->name;
 
-        if (!exists($args{$key})) {
-            if (exists($attribute->{default}) || exists($attribute->{builder})) {
-                unless ($attribute->{lazy}) {
-                    my $builder = $attribute->{builder};
-                    my $default = exists($attribute->{builder})
-                                ? $instance->$builder
-                                : ref($attribute->{default}) eq 'CODE'
-                                    ? $attribute->{default}->()
-                                    : $attribute->{default};
+        if (defined($from) && exists($args->{$from})) {
+            $args->{$from} = $attribute->coerce_constraint($args->{$from})
+                if $attribute->should_coerce;
+            $attribute->verify_against_type_constraint($args->{$from});
 
-                    $attribute->verify_type_constraint($default)
-                        if $attribute->has_type_constraint;
+            $instance->{$key} = $args->{$from};
 
-                    $instance->{$key} = $default;
+            weaken($instance->{$key})
+                if ref($instance->{$key}) && $attribute->is_weak_ref;
 
-                    Scalar::Util::weaken($instance->{$key})
-                        if $attribute->{weak_ref};
+            if ($attribute->has_trigger) {
+                $attribute->trigger->($instance, $args->{$from});
+            }
+        }
+        else {
+            if ($attribute->has_default || $attribute->has_builder) {
+                unless ($attribute->is_lazy) {
+                    my $default = $attribute->default;
+                    my $builder = $attribute->builder;
+                    my $value = $attribute->has_builder
+                              ? $instance->$builder
+                              : ref($default) eq 'CODE'
+                                  ? $default->($instance)
+                                  : $default;
+
+                    $value = $attribute->coerce_constraint($value)
+                        if $attribute->should_coerce;
+                    $attribute->verify_against_type_constraint($value);
+
+                    $instance->{$key} = $value;
+
+                    weaken($instance->{$key})
+                        if ref($instance->{$key}) && $attribute->is_weak_ref;
                 }
             }
             else {
-                if ($attribute->{required}) {
-                    confess "Attribute '$attribute->{name}' is required";
+                if ($attribute->is_required) {
+                    confess "Attribute (".$attribute->name.") is required";
                 }
             }
         }
+    }
 
-        if (exists($args{$key})) {
-            $attribute->verify_type_constraint($args{$key})
-                if $attribute->has_type_constraint;
+    $instance->BUILDALL($args);
 
-            $instance->{$key} = $args{$key};
+    return $instance;
+}
 
-            Scalar::Util::weaken($instance->{$key})
-                if $attribute->{weak_ref};
+sub BUILDARGS {
+    my $class = shift;
 
-            if ($attribute->{trigger}) {
-                $attribute->{trigger}->($instance, $args{$key}, $attribute);
-            }
-        }
+    if (scalar @_ == 1) {
+        (ref($_[0]) eq 'HASH')
+            || confess "Single parameters to new() must be a HASH ref";
+        return {%{$_[0]}};
+    }
+    else {
+        return {@_};
     }
-
-    $instance->BUILDALL(\%args);
-
-    return $instance;
 }
 
 sub DESTROY { shift->DEMOLISHALL }
@@ -70,9 +85,9 @@ sub BUILDALL {
     # short circuit
     return unless $self->can('BUILD');
 
-    no strict 'refs';
-
-    for my $class ($self->meta->linearized_isa) {
+    for my $class (reverse $self->meta->linearized_isa) {
+        no strict 'refs';
+        no warnings 'once';
         my $code = *{ $class . '::BUILD' }{CODE}
             or next;
         $code->($self, @_);
@@ -94,6 +109,27 @@ sub DEMOLISHALL {
     }
 }
 
+sub dump { 
+    my $self = shift;
+    require Data::Dumper;
+    local $Data::Dumper::Maxdepth = shift if @_;
+    Data::Dumper::Dumper $self;
+}
+
+
+sub does {
+    my ($self, $role_name) = @_;
+    (defined $role_name)
+        || confess "You must supply a role name to does()";
+    my $meta = $self->meta;
+    foreach my $class ($meta->linearized_isa) {
+        my $m = $meta->initialize($class);
+        return 1 
+            if $m->can('does_role') && $m->does_role($role_name);            
+    }
+    return 0;   
+};
+
 1;
 
 __END__
@@ -118,6 +154,11 @@ end of L</new>.
 You may put any business logic initialization in BUILD methods. You don't
 need to redispatch or return any specific value.
 
+=head2 BUILDARGS
+
+Lets you override the arguments that C<new> takes. Return a hashref of
+parameters.
+
 =head2 DEMOLISHALL
 
 Calls L</DEMOLISH> on each class in the class hierarchy. This is called at
@@ -128,5 +169,26 @@ L</DESTROY> time.
 You may put any business logic deinitialization in DEMOLISH methods. You don't
 need to redispatch or return any specific value.
 
+
+=head2 does $role_name
+
+This will check if the invocant's class "does" a given C<$role_name>.
+This is similar to "isa" for object, but it checks the roles instead.
+
+
+=head2 B<dump ($maxdepth)>
+
+From the Moose POD:
+
+    C'mon, how many times have you written the following code while debugging:
+
+     use Data::Dumper; 
+     warn Dumper $obj;
+
+    It can get seriously annoying, so why not just use this.
+
+The implementation was lifted directly from Moose::Object.
+
 =cut
 
+