Implement type parameterization in XS

[gitmo/Mouse.git] / lib / Mouse / Util / TypeConstraints.pm

diff --git a/lib/Mouse/Util/TypeConstraints.pm b/lib/Mouse/Util/TypeConstraints.pm
index a020eb4..9658ca5 100644 (file)
--- a/lib/Mouse/Util/TypeConstraints.pm
+++ b/lib/Mouse/Util/TypeConstraints.pm
@@ -2,7 +2,7 @@ package Mouse::Util::TypeConstraints;
 use Mouse::Util qw(does_role not_supported); # enables strict and warnings
 
 use Carp qw(confess);
-use Scalar::Util qw/blessed looks_like_number openhandle/;
+use Scalar::Util ();
 
 use Mouse::Meta::TypeConstraint;
 use Mouse::Exporter;
@@ -74,14 +74,6 @@ BEGIN {
     sub list_all_type_constraints         { keys %TYPE }
 }
 
-# is-a predicates
-BEGIN{
-    _generate_class_type_for('Mouse::Meta::TypeConstraint' => '_is_a_type_constraint');
-    _generate_class_type_for('Mouse::Meta::Class'          => '_is_a_metaclass');
-    _generate_class_type_for('Mouse::Meta::Role'           => '_is_a_metarole');
-}
-
-
 sub _create_type{
     my $mode = shift;
 
@@ -163,7 +155,7 @@ sub class_type {
     my $class = $options->{class} || $name;
     return _create_type 'subtype', $name => (
         as           => 'Object',
-        optimized_as => _generate_class_type_for($class),
+        optimized_as => Mouse::Util::generate_isa_predicate_for($class),
 
         type => 'Class',
     );
@@ -174,7 +166,7 @@ sub role_type {
     my $role = $options->{role} || $name;
     return _create_type 'subtype', $name => (
         as           => 'Object',
-        optimized_as => sub { blessed($_[0]) && does_role($_[0], $role) },
+        optimized_as => sub { Scalar::Util::blessed($_[0]) && does_role($_[0], $role) },
 
         type => 'Role',
     );
@@ -217,7 +209,7 @@ sub _find_or_create_regular_type{
     my $meta = Mouse::Util::get_metaclass_by_name($spec)
         or return undef;
 
-    if(_is_a_metarole($meta)){
+    if(Mouse::Util::is_a_metarole($meta)){
         return role_type($spec);
     }
     else{
@@ -225,73 +217,29 @@ sub _find_or_create_regular_type{
     }
 }
 
-$TYPE{ArrayRef}{constraint_generator} = sub {
-    my($type_parameter) = @_;
-    my $check = $type_parameter->_compiled_type_constraint;
-
-    return sub{
-        foreach my $value (@{$_}) {
-            return undef unless $check->($value);
-        }
-        return 1;
-    }
-};
-$TYPE{HashRef}{constraint_generator} = sub {
-    my($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
-$TYPE{Maybe}{constraint_generator} = sub {
-    my($type_parameter) = @_;
-    my $check = $type_parameter->_compiled_type_constraint;
-
-    return sub{
-        return !defined($_) || $check->($_);
-    };
-};
+$TYPE{ArrayRef}{constraint_generator} = \&_parameterize_ArrayRef_for;
+$TYPE{HashRef}{constraint_generator}  = \&_parameterize_HashRef_for;
+$TYPE{Maybe}{constraint_generator}    = \&_parameterize_Maybe_for;
 
 sub _find_or_create_parameterized_type{
     my($base, $param) = @_;
 
     my $name = sprintf '%s[%s]', $base->name, $param->name;
 
-    $TYPE{$name} ||= do{
-        my $generator = $base->{constraint_generator};
-
-        if(!$generator){
-            confess("The $name constraint cannot be used, because $param doesn't subtype from a parameterizable type");
-        }
-
-        Mouse::Meta::TypeConstraint->new(
-            name               => $name,
-            parent             => $base,
-            constraint         => $generator->($param),
-
-            type               => 'Parameterized',
-        );
-    }
+    $TYPE{$name} ||= $base->parameterize($param, $name);
 }
+
 sub _find_or_create_union_type{
-    my @types = sort{ $a cmp $b } map{ $_->{type_constraints} ? @{$_->{type_constraints}} : $_ } @_;
+    my @types = sort map{ $_->{type_constraints} ? @{$_->{type_constraints}} : $_ } @_;
 
     my $name = join '|', @types;
 
-    $TYPE{$name} ||= do{
-        return Mouse::Meta::TypeConstraint->new(
-            name              => $name,
-            type_constraints  => \@types,
+    $TYPE{$name} ||= Mouse::Meta::TypeConstraint->new(
+        name              => $name,
+        type_constraints  => \@types,
 
-            type              => 'Union',
-        );
-    };
+        type              => 'Union',
+    );
 }
 
 # The type parser
@@ -366,7 +314,7 @@ sub _parse_type{
 
 sub find_type_constraint {
     my($spec) = @_;
-    return $spec if _is_a_type_constraint($spec);
+    return $spec if Mouse::Util::is_a_type_constraint($spec);
 
     $spec =~ s/\s+//g;
     return $TYPE{$spec};
@@ -374,7 +322,7 @@ sub find_type_constraint {
 
 sub find_or_parse_type_constraint {
     my($spec) = @_;
-    return $spec if _is_a_type_constraint($spec);
+    return $spec if Mouse::Util::is_a_type_constraint($spec);
 
     $spec =~ s/\s+//g;
     return $TYPE{$spec} || do{
@@ -403,7 +351,7 @@ Mouse::Util::TypeConstraints - Type constraint system for Mouse
 
 =head1 VERSION
 
-This document describes Mouse version 0.40_01
+This document describes Mouse version 0.40_03
 
 =head2 SYNOPSIS