X-Git-Url: http://git.shadowcat.co.uk/gitweb/gitweb.cgi?p=gitmo%2FMouse.git;a=blobdiff_plain;f=lib%2FMouse%2FPurePerl.pm;h=f51b4c2540ff3ddfc4a56ae81767b51dc995e510;hp=23f7520b0dbfd62ac5760d0f137a3c58afcd58ca;hb=f7e41edaceee0d549a2d664378cfcf85dcf9454b;hpb=431657256f423bda264c0cb76c28de72fd879b20

diff --git a/lib/Mouse/PurePerl.pm b/lib/Mouse/PurePerl.pm
index 23f7520..f51b4c2 100644
--- a/lib/Mouse/PurePerl.pm
+++ b/lib/Mouse/PurePerl.pm
@@ -1,3 +1,7 @@
+package Mouse::PurePerl;
+
+require Mouse::Util;
+
 package
     Mouse::Util;
 
@@ -66,23 +70,229 @@ sub get_code_package{
     return $gv->STASH->NAME;
 }
 
+sub get_code_ref{
+    my($package, $name) = @_;
+    no strict 'refs';
+    no warnings 'once';
+    use warnings FATAL => 'uninitialized';
+    return *{$package . '::' . $name}{CODE};
+}
+
+sub generate_isa_predicate_for {
+    my($for_class, $name) = @_;
+
+    my $predicate = sub{ Scalar::Util::blessed($_[0]) && $_[0]->isa($for_class) };
+
+    if(defined $name){
+        no strict 'refs';
+        *{ caller() . '::' . $name } = $predicate;
+        return;
+    }
+
+    return $predicate;
+}
+
+
+package
+    Mouse::Util::TypeConstraints;
+
+use Scalar::Util qw(blessed looks_like_number openhandle);
+
+sub Any        { 1 }
+sub Item       { 1 }
+
+sub Bool       { $_[0] ? $_[0] eq '1' : 1 }
+sub Undef      { !defined($_[0]) }
+sub Defined    {  defined($_[0])  }
+sub Value      {  defined($_[0]) && !ref($_[0]) }
+sub Num        { !ref($_[0]) && looks_like_number($_[0]) }
+sub Int        {  defined($_[0]) && !ref($_[0]) && $_[0] =~ /^-?[0-9]+$/ }
+sub Str        {  defined($_[0]) && !ref($_[0]) }
+
+sub Ref        { ref($_[0]) }
+sub ScalarRef  { ref($_[0]) eq 'SCALAR' }
+sub ArrayRef   { ref($_[0]) eq 'ARRAY'  }
+sub HashRef    { ref($_[0]) eq 'HASH'   }
+sub CodeRef    { ref($_[0]) eq 'CODE'   }
+sub RegexpRef  { ref($_[0]) eq 'Regexp' }
+sub GlobRef    { ref($_[0]) eq 'GLOB'   }
+
+sub FileHandle {
+    openhandle($_[0])  || (blessed($_[0]) && $_[0]->isa("IO::Handle"))
+}
+
+sub Object     { blessed($_[0]) && blessed($_[0]) ne 'Regexp' }
+
+sub ClassName  { Mouse::Util::is_class_loaded($_[0]) }
+sub RoleName   { (Mouse::Util::class_of($_[0]) || return 0)->isa('Mouse::Meta::Role') }
+
+sub _parameterize_ArrayRef_for {
+    my($type_parameter) = @_;
+    my $check = $type_parameter->_compiled_type_constraint;
+
+    return sub {
+        foreach my $value (@{$_}) {
+            return undef unless $check->($value);
+        }
+        return 1;
+    }
+}
+
+sub _parameterize_HashRef_for {
+    my($type_parameter) = @_;
+    my $check = $type_parameter->_compiled_type_constraint;
+
+    return sub {
+        foreach my $value(values %{$_}){
+            return undef unless $check->($value);
+        }
+        return 1;
+    };
+}
+
+# 'Maybe' type accepts 'Any', so it requires parameters
+sub _parameterize_Maybe_for {
+    my($type_parameter) = @_;
+    my $check = $type_parameter->_compiled_type_constraint;
+
+    return sub{
+        return !defined($_) || $check->($_);
+    };
+};
+
+
+
 package
     Mouse::Meta::Module;
 
-sub name { $_[0]->{package} }
+sub name          { $_[0]->{package} }
+
+sub _method_map   { $_[0]->{methods} }
+sub _attribute_map{ $_[0]->{attributes} }
+
+sub namespace{
+    my $name = $_[0]->{package};
+    no strict 'refs';
+    return \%{ $name . '::' };
+}
+
+sub add_method {
+    my($self, $name, $code) = @_;
+
+    if(!defined $name){
+        $self->throw_error('You must pass a defined name');
+    }
+    if(!defined $code){
+        $self->throw_error('You must pass a defined code');
+    }
+
+    if(ref($code) ne 'CODE'){
+        $code = \&{$code}; # coerce
+    }
+
+    $self->{methods}->{$name} = $code; # Moose stores meta object here.
+
+    my $pkg = $self->name;
+    no strict 'refs';
+    no warnings 'redefine', 'once';
+    *{ $pkg . '::' . $name } = $code;
+    return;
+}
+
 
 package
     Mouse::Meta::Class;
 
+sub method_metaclass    { $_[0]->{method_metaclass}    || 'Mouse::Meta::Method'    }
+sub attribute_metaclass { $_[0]->{attribute_metaclass} || 'Mouse::Meta::Attribute' }
+
+sub constructor_class { $_[0]->{constructor_class} || 'Mouse::Meta::Method::Constructor' }
+sub destructor_class  { $_[0]->{destructor_class}  || 'Mouse::Meta::Method::Destructor'  }
+
 sub is_anon_class{
     return exists $_[0]->{anon_serial_id};
 }
 
 sub roles { $_[0]->{roles} }
 
+sub linearized_isa { @{ get_linear_isa($_[0]->{package}) } }
+
+sub get_all_attributes {
+    my($self) = @_;
+    my %attrs = map { %{ $self->initialize($_)->{attributes} } } reverse $self->linearized_isa;
+    return values %attrs;
+}
+
+sub new_object {
+    my $self = shift;
+    my %args = (@_ == 1 ? %{$_[0]} : @_);
+
+    my $object = bless {}, $self->name;
+
+    $self->_initialize_object($object, \%args);
+    return $object;
+}
+
+sub _initialize_object{
+    my($self, $object, $args, $ignore_triggers) = @_;
+
+    my @triggers_queue;
+
+    foreach my $attribute ($self->get_all_attributes) {
+        my $init_arg = $attribute->init_arg;
+        my $slot     = $attribute->name;
+
+        if (defined($init_arg) && exists($args->{$init_arg})) {
+            $object->{$slot} = $attribute->_coerce_and_verify($args->{$init_arg}, $object);
+
+            weaken($object->{$slot})
+                if ref($object->{$slot}) && $attribute->is_weak_ref;
+
+            if ($attribute->has_trigger) {
+                push @triggers_queue, [ $attribute->trigger, $object->{$slot} ];
+            }
+        }
+        else { # no init arg
+            if ($attribute->has_default || $attribute->has_builder) {
+                if (!$attribute->is_lazy) {
+                    my $default = $attribute->default;
+                    my $builder = $attribute->builder;
+                    my $value =   $builder                ? $object->$builder()
+                                : ref($default) eq 'CODE' ? $object->$default()
+                                :                           $default;
+
+                    $object->{$slot} = $attribute->_coerce_and_verify($value, $object);
+
+                    weaken($object->{$slot})
+                        if ref($object->{$slot}) && $attribute->is_weak_ref;
+                }
+            }
+            elsif($attribute->is_required) {
+                $self->throw_error("Attribute (".$attribute->name.") is required");
+            }
+        }
+    }
+
+    if(!$ignore_triggers){
+        foreach my $trigger_and_value(@triggers_queue){
+            my($trigger, $value) = @{$trigger_and_value};
+            $trigger->($object, $value);
+        }
+    }
+
+    if($self->is_anon_class){
+        $object->{__METACLASS__} = $self;
+    }
+
+    return;
+}
+
+
 package
     Mouse::Meta::Role;
 
+sub method_metaclass{ $_[0]->{method_metaclass} || 'Mouse::Meta::Role::Method' }
+
 sub is_anon_role{
     return exists $_[0]->{anon_serial_id};
 }
@@ -92,6 +302,9 @@ sub get_roles { $_[0]->{roles} }
 package
     Mouse::Meta::Attribute;
 
+require Mouse::Meta::Method::Accessor;
+
+sub accessor_metaclass{ $_[0]->{accessor_metaclass} || 'Mouse::Meta::Method::Accessor' }
 
 # readers
 
@@ -119,6 +332,8 @@ sub builder              { $_[0]->{builder}                }
 sub should_auto_deref    { $_[0]->{auto_deref}             }
 sub should_coerce        { $_[0]->{coerce}                 }
 
+sub documentation        { $_[0]->{documentation}          }
+
 # predicates
 
 sub has_accessor         { exists $_[0]->{accessor}        }
@@ -133,6 +348,8 @@ sub has_type_constraint  { exists $_[0]->{type_constraint} }
 sub has_trigger          { exists $_[0]->{trigger}         }
 sub has_builder          { exists $_[0]->{builder}         }
 
+sub has_documentation    { exists $_[0]->{documentation}   }
+
 package
     Mouse::Meta::TypeConstraint;
 
@@ -142,10 +359,143 @@ sub message { $_[0]->{message} }
 
 sub _compiled_type_constraint{ $_[0]->{compiled_type_constraint} }
 
+sub _compiled_type_coercion  { $_[0]->{_compiled_type_coercion}  }
+
 sub has_coercion{ exists $_[0]->{_compiled_type_coercion} }
 
+
+sub compile_type_constraint{
+    my($self) = @_;
+
+    # add parents first
+    my @checks;
+    for(my $parent = $self->{parent}; defined $parent; $parent = $parent->{parent}){
+         if($parent->{hand_optimized_type_constraint}){
+            unshift @checks, $parent->{hand_optimized_type_constraint};
+            last; # a hand optimized constraint must include all the parents
+        }
+        elsif($parent->{constraint}){
+            unshift @checks, $parent->{constraint};
+        }
+    }
+
+    # then add child
+    if($self->{constraint}){
+        push @checks, $self->{constraint};
+    }
+
+    if($self->{type_constraints}){ # Union
+        my @types = map{ $_->{compiled_type_constraint} } @{ $self->{type_constraints} };
+        push @checks, sub{
+            foreach my $c(@types){
+                return 1 if $c->($_[0]);
+            }
+            return 0;
+        };
+    }
+
+    if(@checks == 0){
+        $self->{compiled_type_constraint} = \&Mouse::Util::TypeConstraints::Any;
+    }
+    else{
+        $self->{compiled_type_constraint} =  sub{
+            my(@args) = @_;
+            local $_ = $args[0];
+            foreach my $c(@checks){
+                return undef if !$c->(@args);
+            }
+            return 1;
+        };
+    }
+    return;
+}
+
 package
-    Mouse::Meta::Method::Accessor;
+    Mouse::Object;
+
+
+sub BUILDARGS {
+    my $class = shift;
+
+    if (scalar @_ == 1) {
+        (ref($_[0]) eq 'HASH')
+            || $class->meta->throw_error("Single parameters to new() must be a HASH ref");
+
+        return {%{$_[0]}};
+    }
+    else {
+        return {@_};
+    }
+}
+
+sub new {
+    my $class = shift;
+
+    $class->meta->throw_error('Cannot call new() on an instance') if ref $class;
+
+    my $args = $class->BUILDARGS(@_);
+
+    my $meta = Mouse::Meta::Class->initialize($class);
+    my $self = $meta->new_object($args);
+
+    # BUILDALL
+    if( $self->can('BUILD') ) {
+        for my $class (reverse $meta->linearized_isa) {
+            my $build = Mouse::Util::get_code_ref($class, 'BUILD')
+                || next;
+
+            $self->$build($args);
+        }
+    }
+
+    return $self;
+}
+
+sub DESTROY {
+    my $self = shift;
+
+    return unless $self->can('DEMOLISH'); # short circuit
+
+    local $?;
+
+    my $e = do{
+        local $@;
+        eval{
+
+            # DEMOLISHALL
+
+            # We cannot count on being able to retrieve a previously made
+            # metaclass, _or_ being able to make a new one during global
+            # destruction. However, we should still be able to use mro at
+            # that time (at least tests suggest so ;)
+
+            foreach my $class (@{ Mouse::Util::get_linear_isa(ref $self) }) {
+                my $demolish = Mouse::Util::get_code_ref($class, 'DEMOLISH')
+                    || next;
+
+                $self->$demolish();
+            }
+        };
+        $@;
+    };
+
+    no warnings 'misc';
+    die $e if $e; # rethrow
+}
 
 1;
 __END__
+
+=head1 NAME
+
+Mouse::PurePerl - A Mouse guts in pure Perl
+
+=head1 VERSION
+
+This document describes Mouse version 0.40_08
+
+=head1 SEE ALSO
+
+L<Mouse::XS>
+
+=cut