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

package Mouse::PurePerl;

require Mouse::Util;

package
    Mouse::Util;

use strict;
use warnings;

use warnings FATAL => 'redefine'; # to avoid to load Mouse::PurePerl

use B ();

sub is_class_loaded {
    my $class = shift;

    return 0 if ref($class) || !defined($class) || !length($class);

    # walk the symbol table tree to avoid autovififying
    # \*{${main::}{"Foo::"}{"Bar::"}} == \*main::Foo::Bar::

    my $pack = \%::;
    foreach my $part (split('::', $class)) {
        $part .= '::';
        return 0 if !exists $pack->{$part};

        my $entry = \$pack->{$part};
        return 0 if ref($entry) ne 'GLOB';
        $pack = *{$entry}{HASH};
    }

    return 0 if !%{$pack};

    # check for $VERSION or @ISA
    return 1 if exists $pack->{VERSION}
             && defined *{$pack->{VERSION}}{SCALAR} && defined ${ $pack->{VERSION} };
    return 1 if exists $pack->{ISA}
             && defined *{$pack->{ISA}}{ARRAY} && @{ $pack->{ISA} } != 0;

    # check for any method
    foreach my $name( keys %{$pack} ) {
        my $entry = \$pack->{$name};
        return 1 if ref($entry) ne 'GLOB' || defined *{$entry}{CODE};
    }

    # fail
    return 0;
}


# taken from Sub::Identify
sub get_code_info {
    my ($coderef) = @_;
    ref($coderef) or return;

    my $cv = B::svref_2object($coderef);
    $cv->isa('B::CV') or return;

    my $gv = $cv->GV;
    $gv->isa('B::GV') or return;

    return ($gv->STASH->NAME, $gv->NAME);
}

sub get_code_package{
    my($coderef) = @_;

    my $cv = B::svref_2object($coderef);
    $cv->isa('B::CV') or return '';

    my $gv = $cv->GV;
    $gv->isa('B::GV') or return '';

    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;
}

sub generate_can_predicate_for {
    my($methods_ref, $name) = @_;

    my @methods = @{$methods_ref};

    my $predicate = sub{
        my($instance) = @_;
        if(Scalar::Util::blessed($instance)){
            foreach my $method(@methods){
                if(!$instance->can($method)){
                    return 0;
                }
            }
            return 1;
        }
        return 0;
    };

    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 _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;
}

sub is_immutable {  $_[0]->{is_immutable} }

package
    Mouse::Meta::Role;

sub method_metaclass{ $_[0]->{method_metaclass} || 'Mouse::Meta::Role::Method' }

sub is_anon_role{
    return exists $_[0]->{anon_serial_id};
}

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

sub name                 { $_[0]->{name}                   }
sub associated_class     { $_[0]->{associated_class}       }

sub accessor             { $_[0]->{accessor}               }
sub reader               { $_[0]->{reader}                 }
sub writer               { $_[0]->{writer}                 }
sub predicate            { $_[0]->{predicate}              }
sub clearer              { $_[0]->{clearer}                }
sub handles              { $_[0]->{handles}                }

sub _is_metadata         { $_[0]->{is}                     }
sub is_required          { $_[0]->{required}               }
sub default              { $_[0]->{default}                }
sub is_lazy              { $_[0]->{lazy}                   }
sub is_lazy_build        { $_[0]->{lazy_build}             }
sub is_weak_ref          { $_[0]->{weak_ref}               }
sub init_arg             { $_[0]->{init_arg}               }
sub type_constraint      { $_[0]->{type_constraint}        }

sub trigger              { $_[0]->{trigger}                }
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}        }
sub has_reader           { exists $_[0]->{reader}          }
sub has_writer           { exists $_[0]->{writer}          }
sub has_predicate        { exists $_[0]->{predicate}       }
sub has_clearer          { exists $_[0]->{clearer}         }
sub has_handles          { exists $_[0]->{handles}         }

sub has_default          { exists $_[0]->{default}         }
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;

sub name    { $_[0]->{name}    }
sub parent  { $_[0]->{parent}  }
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::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
}

sub BUILDALL {
    my $self = shift;

    # short circuit
    return unless $self->can('BUILD');

    for my $class (reverse $self->meta->linearized_isa) {
        my $build = Mouse::Util::get_code_ref($class, 'BUILD')
            || next;

        $self->$build(@_);
    }
    return;
}

sub DEMOLISHALL;
*DEMOLISHALL = \&DESTROY;

1;
__END__

=head1 NAME

Mouse::PurePerl - A Mouse guts in pure Perl

=head1 VERSION

This document describes Mouse version 0.4501

=head1 SEE ALSO

L<Mouse::XS>

=cut
Commit	Line	Data
ccb38d0b	1	package Mouse::PurePerl;
ccb38d0b	2
a52cca04	3	require Mouse::Util;
a52cca04	4
df6dd016	5	package
	6	Mouse::Util;
	7
	8	use strict;
	9	use warnings;
	10
	11	use warnings FATAL => 'redefine'; # to avoid to load Mouse::PurePerl
	12
	13	use B ();
	14
	15	sub is_class_loaded {
	16	my $class = shift;
	17
	18	return 0 if ref($class) \|\| !defined($class) \|\| !length($class);
	19
	20	# walk the symbol table tree to avoid autovififying
3bb9e54e	21	# \{${main::}{"Foo::"}{"Bar::"}} == \main::Foo::Bar::
df6dd016	22
	23	my $pack = \%::;
	24	foreach my $part (split('::', $class)) {
3bb9e54e	25	$part .= '::';
	26	return 0 if !exists $pack->{$part};
	27
	28	my $entry = \$pack->{$part};
df6dd016	29	return 0 if ref($entry) ne 'GLOB';
3bb9e54e	30	$pack = *{$entry}{HASH};
df6dd016	31	}
df6dd016	32
3bb9e54e	33	return 0 if !%{$pack};
3bb9e54e	34
df6dd016	35	# check for $VERSION or @ISA
	36	return 1 if exists $pack->{VERSION}
	37	&& defined *{$pack->{VERSION}}{SCALAR} && defined ${ $pack->{VERSION} };
	38	return 1 if exists $pack->{ISA}
	39	&& defined *{$pack->{ISA}}{ARRAY} && @{ $pack->{ISA} } != 0;
	40
	41	# check for any method
	42	foreach my $name( keys %{$pack} ) {
	43	my $entry = \$pack->{$name};
	44	return 1 if ref($entry) ne 'GLOB' \|\| defined *{$entry}{CODE};
	45	}
	46
	47	# fail
	48	return 0;
	49	}
	50
	51
	52	# taken from Sub::Identify
	53	sub get_code_info {
	54	my ($coderef) = @_;
	55	ref($coderef) or return;
	56
	57	my $cv = B::svref_2object($coderef);
	58	$cv->isa('B::CV') or return;
	59
	60	my $gv = $cv->GV;
	61	$gv->isa('B::GV') or return;
	62
	63	return ($gv->STASH->NAME, $gv->NAME);
	64	}
	65
	66	sub get_code_package{
	67	my($coderef) = @_;
	68
	69	my $cv = B::svref_2object($coderef);
	70	$cv->isa('B::CV') or return '';
	71
	72	my $gv = $cv->GV;
	73	$gv->isa('B::GV') or return '';
	74
	75	return $gv->STASH->NAME;
	76	}
	77
7d96ae4d	78	sub get_code_ref{
	79	my($package, $name) = @_;
	80	no strict 'refs';
	81	no warnings 'once';
	82	use warnings FATAL => 'uninitialized';
	83	return *{$package . '::' . $name}{CODE};
	84	}
	85
e3540312	86	sub generate_isa_predicate_for {
1d5ecd5f	87	my($for_class, $name) = @_;
1d5ecd5f	88
f48920c1	89	my $predicate = sub{ Scalar::Util::blessed($_[0]) && $_[0]->isa($for_class) };
1d5ecd5f	90
	91	if(defined $name){
	92	no strict 'refs';
	93	*{ caller() . '::' . $name } = $predicate;
	94	return;
	95	}
	96
	97	return $predicate;
	98	}
	99
ebe91068	100	sub generate_can_predicate_for {
	101	my($methods_ref, $name) = @_;
	102
	103	my @methods = @{$methods_ref};
	104
	105	my $predicate = sub{
	106	my($instance) = @_;
	107	if(Scalar::Util::blessed($instance)){
	108	foreach my $method(@methods){
	109	if(!$instance->can($method)){
	110	return 0;
	111	}
	112	}
	113	return 1;
	114	}
	115	return 0;
	116	};
	117
	118	if(defined $name){
	119	no strict 'refs';
	120	*{ caller() . '::' . $name } = $predicate;
	121	return;
	122	}
	123
	124	return $predicate;
	125	}
1d5ecd5f	126
f48920c1	127	package
	128	Mouse::Util::TypeConstraints;
	129
	130	use Scalar::Util qw(blessed looks_like_number openhandle);
	131
7d96ae4d	132	sub Any { 1 }
7d96ae4d	133	sub Item { 1 }
7d96ae4d	134
	135	sub Bool { $_[0] ? $_[0] eq '1' : 1 }
	136	sub Undef { !defined($_[0]) }
	137	sub Defined { defined($_[0]) }
	138	sub Value { defined($_[0]) && !ref($_[0]) }
	139	sub Num { !ref($_[0]) && looks_like_number($_[0]) }
	140	sub Int { defined($_[0]) && !ref($_[0]) && $_[0] =~ /^-?[0-9]+$/ }
	141	sub Str { defined($_[0]) && !ref($_[0]) }
	142
	143	sub Ref { ref($_[0]) }
	144	sub ScalarRef { ref($_[0]) eq 'SCALAR' }
	145	sub ArrayRef { ref($_[0]) eq 'ARRAY' }
	146	sub HashRef { ref($_[0]) eq 'HASH' }
	147	sub CodeRef { ref($_[0]) eq 'CODE' }
	148	sub RegexpRef { ref($_[0]) eq 'Regexp' }
	149	sub GlobRef { ref($_[0]) eq 'GLOB' }
	150
	151	sub FileHandle {
	152	openhandle($_[0]) \|\| (blessed($_[0]) && $_[0]->isa("IO::Handle"))
	153	}
	154
	155	sub Object { blessed($_[0]) && blessed($_[0]) ne 'Regexp' }
	156
	157	sub ClassName { Mouse::Util::is_class_loaded($_[0]) }
	158	sub RoleName { (Mouse::Util::class_of($_[0]) \|\| return 0)->isa('Mouse::Meta::Role') }
	159
619338ac	160	sub _parameterize_ArrayRef_for {
	161	my($type_parameter) = @_;
	162	my $check = $type_parameter->_compiled_type_constraint;
	163
	164	return sub {
	165	foreach my $value (@{$_}) {
	166	return undef unless $check->($value);
	167	}
	168	return 1;
	169	}
	170	}
	171
	172	sub _parameterize_HashRef_for {
	173	my($type_parameter) = @_;
	174	my $check = $type_parameter->_compiled_type_constraint;
	175
	176	return sub {
	177	foreach my $value(values %{$_}){
	178	return undef unless $check->($value);
	179	}
	180	return 1;
	181	};
	182	}
	183
	184	# 'Maybe' type accepts 'Any', so it requires parameters
	185	sub _parameterize_Maybe_for {
	186	my($type_parameter) = @_;
	187	my $check = $type_parameter->_compiled_type_constraint;
	188
	189	return sub{
	190	return !defined($_) \|\| $check->($_);
	191	};
	192	};
	193
	194
7d96ae4d	195
43165725	196	package
	197	Mouse::Meta::Module;
	198
926404f2	199	sub name { $_[0]->{package} }
	200
	201	sub _method_map { $_[0]->{methods} }
c5f6ad05	202	sub _attribute_map{ $_[0]->{attributes} }
43165725	203
2591e962	204	sub namespace{
	205	my $name = $_[0]->{package};
	206	no strict 'refs';
	207	return \%{ $name . '::' };
	208	}
	209
3e44140b	210	sub add_method {
	211	my($self, $name, $code) = @_;
	212
	213	if(!defined $name){
	214	$self->throw_error('You must pass a defined name');
	215	}
	216	if(!defined $code){
	217	$self->throw_error('You must pass a defined code');
	218	}
	219
	220	if(ref($code) ne 'CODE'){
	221	$code = \&{$code}; # coerce
	222	}
	223
	224	$self->{methods}->{$name} = $code; # Moose stores meta object here.
	225
	226	my $pkg = $self->name;
	227	no strict 'refs';
	228	no warnings 'redefine', 'once';
	229	*{ $pkg . '::' . $name } = $code;
	230	return;
	231	}
	232
43165725	233	package
	234	Mouse::Meta::Class;
	235
e058b279	236	sub method_metaclass { $_[0]->{method_metaclass} \|\| 'Mouse::Meta::Method' }
	237	sub attribute_metaclass { $_[0]->{attribute_metaclass} \|\| 'Mouse::Meta::Attribute' }
	238
	239	sub constructor_class { $_[0]->{constructor_class} \|\| 'Mouse::Meta::Method::Constructor' }
	240	sub destructor_class { $_[0]->{destructor_class} \|\| 'Mouse::Meta::Method::Destructor' }
4e7e3250	241
43165725	242	sub is_anon_class{
	243	return exists $_[0]->{anon_serial_id};
	244	}
	245
	246	sub roles { $_[0]->{roles} }
	247
cccb83de	248	sub linearized_isa { @{ get_linear_isa($_[0]->{package}) } }
cccb83de	249
da4432f3	250	sub get_all_attributes {
da4432f3	251	my($self) = @_;
047d7af0	252	my %attrs = map { %{ $self->initialize($_)->{attributes} } } reverse $self->linearized_isa;
da4432f3	253	return values %attrs;
	254	}
	255
ba153b33	256	sub new_object {
	257	my $self = shift;
	258	my %args = (@_ == 1 ? %{$_[0]} : @_);
	259
	260	my $object = bless {}, $self->name;
	261
	262	$self->_initialize_object($object, \%args);
	263	return $object;
	264	}
	265
4e7e3250	266	sub _initialize_object{
	267	my($self, $object, $args, $ignore_triggers) = @_;
	268
	269	my @triggers_queue;
	270
	271	foreach my $attribute ($self->get_all_attributes) {
	272	my $init_arg = $attribute->init_arg;
	273	my $slot = $attribute->name;
	274
	275	if (defined($init_arg) && exists($args->{$init_arg})) {
	276	$object->{$slot} = $attribute->_coerce_and_verify($args->{$init_arg}, $object);
	277
	278	weaken($object->{$slot})
	279	if ref($object->{$slot}) && $attribute->is_weak_ref;
	280
	281	if ($attribute->has_trigger) {
	282	push @triggers_queue, [ $attribute->trigger, $object->{$slot} ];
	283	}
	284	}
	285	else { # no init arg
	286	if ($attribute->has_default \|\| $attribute->has_builder) {
	287	if (!$attribute->is_lazy) {
	288	my $default = $attribute->default;
	289	my $builder = $attribute->builder;
	290	my $value = $builder ? $object->$builder()
	291	: ref($default) eq 'CODE' ? $object->$default()
	292	: $default;
	293
	294	$object->{$slot} = $attribute->_coerce_and_verify($value, $object);
	295
	296	weaken($object->{$slot})
	297	if ref($object->{$slot}) && $attribute->is_weak_ref;
	298	}
	299	}
	300	elsif($attribute->is_required) {
	301	$self->throw_error("Attribute (".$attribute->name.") is required");
	302	}
	303	}
	304	}
	305
	306	if(!$ignore_triggers){
	307	foreach my $trigger_and_value(@triggers_queue){
	308	my($trigger, $value) = @{$trigger_and_value};
	309	$trigger->($object, $value);
	310	}
	311	}
	312
	313	if($self->is_anon_class){
	314	$object->{__METACLASS__} = $self;
	315	}
	316
	317	return;
	318	}
	319
80efe911	320	sub is_immutable { $_[0]->{is_immutable} }
4e7e3250	321
43165725	322	package
	323	Mouse::Meta::Role;
	324
e058b279	325	sub method_metaclass{ $_[0]->{method_metaclass} \|\| 'Mouse::Meta::Role::Method' }
e058b279	326
43165725	327	sub is_anon_role{
	328	return exists $_[0]->{anon_serial_id};
	329	}
	330
	331	sub get_roles { $_[0]->{roles} }
	332
	333	package
	334	Mouse::Meta::Attribute;
	335
e058b279	336	require Mouse::Meta::Method::Accessor;
	337
	338	sub accessor_metaclass{ $_[0]->{accessor_metaclass} \|\| 'Mouse::Meta::Method::Accessor' }
43165725	339
	340	# readers
	341
	342	sub name { $_[0]->{name} }
	343	sub associated_class { $_[0]->{associated_class} }
	344
	345	sub accessor { $_[0]->{accessor} }
	346	sub reader { $_[0]->{reader} }
	347	sub writer { $_[0]->{writer} }
	348	sub predicate { $_[0]->{predicate} }
	349	sub clearer { $_[0]->{clearer} }
	350	sub handles { $_[0]->{handles} }
	351
	352	sub _is_metadata { $_[0]->{is} }
	353	sub is_required { $_[0]->{required} }
	354	sub default { $_[0]->{default} }
	355	sub is_lazy { $_[0]->{lazy} }
	356	sub is_lazy_build { $_[0]->{lazy_build} }
	357	sub is_weak_ref { $_[0]->{weak_ref} }
	358	sub init_arg { $_[0]->{init_arg} }
	359	sub type_constraint { $_[0]->{type_constraint} }
	360
	361	sub trigger { $_[0]->{trigger} }
	362	sub builder { $_[0]->{builder} }
	363	sub should_auto_deref { $_[0]->{auto_deref} }
	364	sub should_coerce { $_[0]->{coerce} }
	365
d899d3e7	366	sub documentation { $_[0]->{documentation} }
d899d3e7	367
43165725	368	# predicates
	369
	370	sub has_accessor { exists $_[0]->{accessor} }
	371	sub has_reader { exists $_[0]->{reader} }
	372	sub has_writer { exists $_[0]->{writer} }
	373	sub has_predicate { exists $_[0]->{predicate} }
	374	sub has_clearer { exists $_[0]->{clearer} }
	375	sub has_handles { exists $_[0]->{handles} }
	376
	377	sub has_default { exists $_[0]->{default} }
	378	sub has_type_constraint { exists $_[0]->{type_constraint} }
	379	sub has_trigger { exists $_[0]->{trigger} }
	380	sub has_builder { exists $_[0]->{builder} }
	381
d899d3e7	382	sub has_documentation { exists $_[0]->{documentation} }
d899d3e7	383
43165725	384	package
	385	Mouse::Meta::TypeConstraint;
	386
	387	sub name { $_[0]->{name} }
	388	sub parent { $_[0]->{parent} }
	389	sub message { $_[0]->{message} }
	390
	391	sub _compiled_type_constraint{ $_[0]->{compiled_type_constraint} }
	392
93540011	393	sub _compiled_type_coercion { $_[0]->{_compiled_type_coercion} }
df6dd016	394
93540011	395	sub has_coercion{ exists $_[0]->{_compiled_type_coercion} }
df6dd016	396
f790c46b	397
	398	sub compile_type_constraint{
	399	my($self) = @_;
	400
	401	# add parents first
	402	my @checks;
	403	for(my $parent = $self->{parent}; defined $parent; $parent = $parent->{parent}){
	404	if($parent->{hand_optimized_type_constraint}){
	405	unshift @checks, $parent->{hand_optimized_type_constraint};
	406	last; # a hand optimized constraint must include all the parents
	407	}
	408	elsif($parent->{constraint}){
	409	unshift @checks, $parent->{constraint};
	410	}
	411	}
	412
	413	# then add child
	414	if($self->{constraint}){
	415	push @checks, $self->{constraint};
	416	}
	417
	418	if($self->{type_constraints}){ # Union
	419	my @types = map{ $_->{compiled_type_constraint} } @{ $self->{type_constraints} };
	420	push @checks, sub{
	421	foreach my $c(@types){
	422	return 1 if $c->($_[0]);
	423	}
	424	return 0;
	425	};
	426	}
	427
	428	if(@checks == 0){
	429	$self->{compiled_type_constraint} = \&Mouse::Util::TypeConstraints::Any;
	430	}
	431	else{
	432	$self->{compiled_type_constraint} = sub{
	433	my(@args) = @_;
	434	local $_ = $args[0];
	435	foreach my $c(@checks){
	436	return undef if !$c->(@args);
	437	}
	438	return 1;
	439	};
	440	}
	441	return;
	442	}
	443
aa2d2e2c	444	package
	445	Mouse::Object;
	446
	447
	448	sub BUILDARGS {
	449	my $class = shift;
f790c46b	450
aa2d2e2c	451	if (scalar @_ == 1) {
	452	(ref($_[0]) eq 'HASH')
	453	\|\| $class->meta->throw_error("Single parameters to new() must be a HASH ref");
	454
	455	return {%{$_[0]}};
	456	}
	457	else {
	458	return {@_};
	459	}
	460	}
f790c46b	461
af04626d	462	sub new {
	463	my $class = shift;
	464
	465	$class->meta->throw_error('Cannot call new() on an instance') if ref $class;
	466
	467	my $args = $class->BUILDARGS(@_);
	468
	469	my $meta = Mouse::Meta::Class->initialize($class);
	470	my $self = $meta->new_object($args);
	471
	472	# BUILDALL
	473	if( $self->can('BUILD') ) {
	474	for my $class (reverse $meta->linearized_isa) {
	475	my $build = Mouse::Util::get_code_ref($class, 'BUILD')
	476	\|\| next;
	477
	478	$self->$build($args);
	479	}
	480	}
	481
	482	return $self;
	483	}
	484
a5c683f6	485	sub DESTROY {
	486	my $self = shift;
	487
	488	return unless $self->can('DEMOLISH'); # short circuit
	489
	490	local $?;
	491
	492	my $e = do{
	493	local $@;
	494	eval{
	495
	496	# DEMOLISHALL
	497
	498	# We cannot count on being able to retrieve a previously made
	499	# metaclass, _or_ being able to make a new one during global
	500	# destruction. However, we should still be able to use mro at
	501	# that time (at least tests suggest so ;)
	502
	503	foreach my $class (@{ Mouse::Util::get_linear_isa(ref $self) }) {
	504	my $demolish = Mouse::Util::get_code_ref($class, 'DEMOLISH')
	505	\|\| next;
	506
	507	$self->$demolish();
	508	}
	509	};
	510	$@;
	511	};
	512
	513	no warnings 'misc';
	514	die $e if $e; # rethrow
	515	}
	516
adb5eb76	517	sub BUILDALL {
	518	my $self = shift;
	519
	520	# short circuit
	521	return unless $self->can('BUILD');
	522
	523	for my $class (reverse $self->meta->linearized_isa) {
	524	my $build = Mouse::Util::get_code_ref($class, 'BUILD')
	525	\|\| next;
	526
	527	$self->$build(@_);
	528	}
	529	return;
	530	}
	531
	532	sub DEMOLISHALL;
	533	*DEMOLISHALL = \&DESTROY;
	534
df6dd016	535	1;
df6dd016	536	__END__
ccb38d0b	537
	538	=head1 NAME
	539
	540	Mouse::PurePerl - A Mouse guts in pure Perl
	541
	542	=head1 VERSION
	543
267711f7	544	This document describes Mouse version 0.4501
ccb38d0b	545
	546	=head1 SEE ALSO
	547
	548	L<Mouse::XS>
	549
	550	=cut