Moose compat: Remove Mouse::Class->attributes method in favor of get_attribute_map

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

diff --git a/lib/Mouse/TypeRegistry.pm b/lib/Mouse/TypeRegistry.pm
index 3e63cec..6568990 100644 (file)
--- a/lib/Mouse/TypeRegistry.pm
+++ b/lib/Mouse/TypeRegistry.pm
@@ -2,7 +2,9 @@
 package Mouse::TypeRegistry;
 use strict;
 use warnings;
+use Scalar::Util qw/looks_like_number blessed openhandle/;
 
+no warnings 'uninitialized';
 sub optimized_constraints {
     return {
         Any        => sub { 1 },
@@ -10,24 +12,76 @@ sub optimized_constraints {
         Bool       => sub {
             !defined($_) || $_ eq "" || "$_" eq '1' || "$_" eq '0'
         },
-        Undef      => sub { 1 },
-        Defined    => sub { 1 },
-        Value      => sub { 1 },
-        Num        => sub { 1 },
-        Int        => sub { 1 },
-        Str        => sub { 1 },
-        ClassName  => sub { 1 },
-        Ref        => sub { 1 },
-        ScalarRef  => sub { 1 },
-        ArrayRef   => sub { 1 },
-        HashRef    => sub { 1 },
-        CodeRef    => sub { 1 },
-        RegexpRef  => sub { 1 },
-        GlobRef    => sub { 1 },
-        FileHandle => sub { 1 },
-        Object     => sub { 1 },
+        Undef      => sub { !defined($_) },
+        Defined    => sub { defined($_) },
+        Value      => sub { defined($_) && !ref($_) },
+        Num        => sub { !ref($_) && looks_like_number($_) },
+        Int        => sub { defined($_) && !ref($_) && /^-?[0-9]+$/ },
+        Str        => sub { defined($_) && !ref($_) },
+        Ref        => sub { ref($_) },
+
+        ScalarRef  => sub { ref($_) eq 'SCALAR' },
+        ArrayRef   => sub { ref($_) eq 'ARRAY'  },
+        HashRef    => sub { ref($_) eq 'HASH'   },
+        CodeRef    => sub { ref($_) eq 'CODE'   },
+        RegexpRef  => sub { ref($_) eq 'Regexp' },
+        GlobRef    => sub { ref($_) eq 'GLOB'   },
+
+        FileHandle => sub {
+                ref($_) eq 'GLOB'
+                && openhandle($_)
+            or
+                blessed($_)
+                && $_->isa("IO::Handle")
+        },
+
+        Object     => sub { blessed($_) && blessed($_) ne 'Regexp' },
+
+        ClassName  => sub {
+            return if ref($_);
+            return unless defined($_) && length($_);
+
+            # walk the symbol table tree to avoid autovififying
+            # \*{${main::}{"Foo::"}} == \*main::Foo::
+
+            my $pack = \*::;
+            foreach my $part (split('::', $_)) {
+                return unless exists ${$$pack}{"${part}::"};
+                $pack = \*{${$$pack}{"${part}::"}};
+            }
+
+            # check for $VERSION or @ISA
+            return 1 if exists ${$$pack}{VERSION}
+                    && defined *{${$$pack}{VERSION}}{SCALAR};
+            return 1 if exists ${$$pack}{ISA}
+                    && defined *{${$$pack}{ISA}}{ARRAY};
+
+            # check for any method
+            foreach ( keys %{$$pack} ) {
+                next if substr($_, -2, 2) eq '::';
+                return 1 if defined *{${$$pack}{$_}}{CODE};
+            }
+
+            # fail
+            return;
+        },
     };
 }
 
 1;
 
+__END__
+
+=head1 NAME
+
+Mouse::TypeRegistry - simple type constraints
+
+=head1 METHODS
+
+=head2 optimized_constraints -> HashRef[CODE]
+
+Returns the simple type constraints that Mouse understands.
+
+=cut
+
+