Checking in changes prior to tagging of version 0.41. Changelog diff is:

[gitmo/Mouse.git] / lib / Mouse / PurePerl.pm

diff --git a/lib/Mouse/PurePerl.pm b/lib/Mouse/PurePerl.pm
index 8ff18ee..72dcb36 100644 (file)
--- a/lib/Mouse/PurePerl.pm
+++ b/lib/Mouse/PurePerl.pm
@@ -18,15 +18,20 @@ sub is_class_loaded {
     return 0 if ref($class) || !defined($class) || !length($class);
 
     # walk the symbol table tree to avoid autovififying
-    # \*{${main::}{"Foo::"}} == \*main::Foo::
+    # \*{${main::}{"Foo::"}{"Bar::"}} == \*main::Foo::Bar::
 
     my $pack = \%::;
     foreach my $part (split('::', $class)) {
-        my $entry = \$pack->{$part . '::'};
+        $part .= '::';
+        return 0 if !exists $pack->{$part};
+
+        my $entry = \$pack->{$part};
         return 0 if ref($entry) ne 'GLOB';
-        $pack = *{$entry}{HASH} or return 0;
+        $pack = *{$entry}{HASH};
     }
 
+    return 0 if !%{$pack};
+
     # check for $VERSION or @ISA
     return 1 if exists $pack->{VERSION}
              && defined *{$pack->{VERSION}}{SCALAR} && defined ${ $pack->{VERSION} };
@@ -199,11 +204,86 @@ sub add_method {
     return;
 }
 
+my %SIGIL_MAP = (
+    '$' => 'SCALAR',
+    '@' => 'ARRAY',
+    '%' => 'HASH',
+    '&' => 'CODE',
+    '*' => 'GLOB',
+);
+
+sub _deconstruct_variable_name {
+    my($self, $variable) = @_;
+
+    (defined $variable)
+        || $self->throw_error("You must pass a variable name");
+
+    my $sigil = substr($variable, 0, 1, '');
+
+    (defined $sigil)
+        || $self->throw_error("The variable name must include a sigil");
+
+    (exists $SIGIL_MAP{$sigil})
+        || $self->throw_error("I do not recognize that sigil '$sigil'");
+
+    return ($variable, $SIGIL_MAP{$sigil});
+}
+
+sub has_package_symbol {
+    my($self, $variable) = @_;
+
+    my($name, $type) = $self->_deconstruct_variable_name($variable);
+
+    my $namespace = $self->namespace;
+
+    return 0 unless exists $namespace->{$name};
+
+    my $entry_ref = \$namespace->{$name};
+    if ( ref($entry_ref) eq 'GLOB' ) {
+        return defined( *{$entry_ref}{$type} );
+    }
+    else {
+        # a symbol table entry can be -1 (stub), string (stub with prototype),
+        # or reference (constant)
+        return $type eq 'CODE';
+    }
+}
+
+sub get_package_symbol {
+    my ($self, $variable) = @_;
+
+    my($name, $type) = $self->_deconstruct_variable_name($variable);
+
+    my $namespace = $self->namespace;
+
+    return undef
+        unless exists $namespace->{$name};
+
+    my $entry_ref = \$namespace->{$name};
+
+    if ( ref($entry_ref) eq 'GLOB' ) {
+        return *{$entry_ref}{$type};
+    }
+    else {
+        if ( $type eq 'CODE' ) {
+            no strict 'refs';
+            return \&{ $self->name . '::' . $name };
+        }
+        else {
+            return undef;
+        }
+    }
+}
+
 
 package
     Mouse::Meta::Class;
 
-sub constructor_class()   { 'Mouse::Meta::Method::Constructor' }
+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};
@@ -219,6 +299,16 @@ sub get_all_attributes {
     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) = @_;
 
@@ -277,6 +367,8 @@ sub _initialize_object{
 package
     Mouse::Meta::Role;
 
+sub method_metaclass{ $_[0]->{method_metaclass} || 'Mouse::Meta::Role::Method' }
+
 sub is_anon_role{
     return exists $_[0]->{anon_serial_id};
 }
@@ -286,7 +378,9 @@ sub get_roles { $_[0]->{roles} }
 package
     Mouse::Meta::Attribute;
 
-use Mouse::Meta::Method::Accessor;
+require Mouse::Meta::Method::Accessor;
+
+sub accessor_metaclass{ $_[0]->{accessor_metaclass} || 'Mouse::Meta::Method::Accessor' }
 
 # readers
 
@@ -332,8 +426,6 @@ sub has_builder          { exists $_[0]->{builder}         }
 
 sub has_documentation    { exists $_[0]->{documentation}   }
 
-sub accessor_metaclass(){ 'Mouse::Meta::Method::Accessor' }
-
 package
     Mouse::Meta::TypeConstraint;
 
@@ -435,6 +527,38 @@ sub new {
     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__
 
@@ -444,7 +568,7 @@ Mouse::PurePerl - A Mouse guts in pure Perl
 
 =head1 VERSION
 
-This document describes Mouse version 0.40_05
+This document describes Mouse version 0.41
 
 =head1 SEE ALSO