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

package Mouse::PurePerl;

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::"}} == \*main::Foo::

    my $pack = \%::;
    foreach my $part (split('::', $class)) {
        my $entry = \$pack->{$part . '::'};
        return 0 if ref($entry) ne 'GLOB';
        $pack = *{$entry}{HASH} or return 0;
    }

    # 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;
}


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]->{attribute_map} }

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

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

sub linearized_isa { @{ get_linear_isa($_[0]->{package}) } }

package
    Mouse::Meta::Role;

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

sub get_roles { $_[0]->{roles} }

package
    Mouse::Meta::Attribute;

use 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}   }

sub accessor_metaclass(){ 'Mouse::Meta::Method::Accessor' }

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} }

1;
__END__

=head1 NAME

Mouse::PurePerl - A Mouse guts in pure Perl

=head1 VERSION

This document describes Mouse version 0.40_03

=head1 SEE ALSO

L<Mouse::XS>

=cut
Commit	Line	Data
ccb38d0b	1	package Mouse::PurePerl;
ccb38d0b	2
df6dd016	3	package
	4	Mouse::Util;
	5
	6	use strict;
	7	use warnings;
	8
	9	use warnings FATAL => 'redefine'; # to avoid to load Mouse::PurePerl
	10
	11	use B ();
	12
	13	sub is_class_loaded {
	14	my $class = shift;
	15
	16	return 0 if ref($class) \|\| !defined($class) \|\| !length($class);
	17
	18	# walk the symbol table tree to avoid autovififying
	19	# \{${main::}{"Foo::"}} == \main::Foo::
	20
	21	my $pack = \%::;
	22	foreach my $part (split('::', $class)) {
	23	my $entry = \$pack->{$part . '::'};
	24	return 0 if ref($entry) ne 'GLOB';
	25	$pack = *{$entry}{HASH} or return 0;
	26	}
	27
	28	# check for $VERSION or @ISA
	29	return 1 if exists $pack->{VERSION}
	30	&& defined *{$pack->{VERSION}}{SCALAR} && defined ${ $pack->{VERSION} };
	31	return 1 if exists $pack->{ISA}
	32	&& defined *{$pack->{ISA}}{ARRAY} && @{ $pack->{ISA} } != 0;
	33
	34	# check for any method
	35	foreach my $name( keys %{$pack} ) {
	36	my $entry = \$pack->{$name};
	37	return 1 if ref($entry) ne 'GLOB' \|\| defined *{$entry}{CODE};
	38	}
	39
	40	# fail
	41	return 0;
	42	}
	43
	44
	45	# taken from Sub::Identify
	46	sub get_code_info {
	47	my ($coderef) = @_;
	48	ref($coderef) or return;
	49
	50	my $cv = B::svref_2object($coderef);
	51	$cv->isa('B::CV') or return;
	52
	53	my $gv = $cv->GV;
	54	$gv->isa('B::GV') or return;
	55
	56	return ($gv->STASH->NAME, $gv->NAME);
	57	}
	58
	59	sub get_code_package{
	60	my($coderef) = @_;
	61
	62	my $cv = B::svref_2object($coderef);
	63	$cv->isa('B::CV') or return '';
	64
	65	my $gv = $cv->GV;
	66	$gv->isa('B::GV') or return '';
67
68	return $gv->STASH->NAME;
69	}
70
7d96ae4d	71	sub get_code_ref{
	72	my($package, $name) = @_;
	73	no strict 'refs';
	74	no warnings 'once';
	75	use warnings FATAL => 'uninitialized';
	76	return *{$package . '::' . $name}{CODE};
	77	}
	78
e3540312	79	sub generate_isa_predicate_for {
1d5ecd5f	80	my($for_class, $name) = @_;
1d5ecd5f	81
f48920c1	82	my $predicate = sub{ Scalar::Util::blessed($_[0]) && $_[0]->isa($for_class) };
1d5ecd5f	83
	84	if(defined $name){
	85	no strict 'refs';
	86	*{ caller() . '::' . $name } = $predicate;
	87	return;
	88	}
	89
	90	return $predicate;
	91	}
	92
	93
f48920c1	94	package
	95	Mouse::Util::TypeConstraints;
	96
	97	use Scalar::Util qw(blessed looks_like_number openhandle);
	98
7d96ae4d	99	sub Any { 1 }
7d96ae4d	100	sub Item { 1 }
7d96ae4d	101
	102	sub Bool { $_[0] ? $_[0] eq '1' : 1 }
	103	sub Undef { !defined($_[0]) }
	104	sub Defined { defined($_[0]) }
	105	sub Value { defined($_[0]) && !ref($_[0]) }
	106	sub Num { !ref($_[0]) && looks_like_number($_[0]) }
	107	sub Int { defined($_[0]) && !ref($_[0]) && $_[0] =~ /^-?[0-9]+$/ }
	108	sub Str { defined($_[0]) && !ref($_[0]) }
	109
	110	sub Ref { ref($_[0]) }
	111	sub ScalarRef { ref($_[0]) eq 'SCALAR' }
	112	sub ArrayRef { ref($_[0]) eq 'ARRAY' }
	113	sub HashRef { ref($_[0]) eq 'HASH' }
	114	sub CodeRef { ref($_[0]) eq 'CODE' }
	115	sub RegexpRef { ref($_[0]) eq 'Regexp' }
	116	sub GlobRef { ref($_[0]) eq 'GLOB' }
	117
	118	sub FileHandle {
	119	openhandle($_[0]) \|\| (blessed($_[0]) && $_[0]->isa("IO::Handle"))
	120	}
	121
	122	sub Object { blessed($_[0]) && blessed($_[0]) ne 'Regexp' }
	123
	124	sub ClassName { Mouse::Util::is_class_loaded($_[0]) }
	125	sub RoleName { (Mouse::Util::class_of($_[0]) \|\| return 0)->isa('Mouse::Meta::Role') }
	126
619338ac	127	sub _parameterize_ArrayRef_for {
	128	my($type_parameter) = @_;
	129	my $check = $type_parameter->_compiled_type_constraint;
	130
	131	return sub {
	132	foreach my $value (@{$_}) {
	133	return undef unless $check->($value);
	134	}
	135	return 1;
	136	}
	137	}
	138
	139	sub _parameterize_HashRef_for {
	140	my($type_parameter) = @_;
	141	my $check = $type_parameter->_compiled_type_constraint;
	142
	143	return sub {
	144	foreach my $value(values %{$_}){
	145	return undef unless $check->($value);
	146	}
	147	return 1;
	148	};
	149	}
	150
	151	# 'Maybe' type accepts 'Any', so it requires parameters
	152	sub _parameterize_Maybe_for {
	153	my($type_parameter) = @_;
	154	my $check = $type_parameter->_compiled_type_constraint;
	155
	156	return sub{
	157	return !defined($_) \|\| $check->($_);
	158	};
	159	};
	160
	161
7d96ae4d	162
43165725	163	package
	164	Mouse::Meta::Module;
	165
926404f2	166	sub name { $_[0]->{package} }
	167
	168	sub _method_map { $_[0]->{methods} }
	169	sub _attribute_map{ $_[0]->{attribute_map} }
43165725	170
2591e962	171	sub namespace{
	172	my $name = $_[0]->{package};
	173	no strict 'refs';
	174	return \%{ $name . '::' };
	175	}
	176
3e44140b	177	sub add_method {
	178	my($self, $name, $code) = @_;
	179
	180	if(!defined $name){
	181	$self->throw_error('You must pass a defined name');
	182	}
	183	if(!defined $code){
	184	$self->throw_error('You must pass a defined code');
	185	}
	186
	187	if(ref($code) ne 'CODE'){
	188	$code = \&{$code}; # coerce
	189	}
	190
	191	$self->{methods}->{$name} = $code; # Moose stores meta object here.
	192
	193	my $pkg = $self->name;
	194	no strict 'refs';
	195	no warnings 'redefine', 'once';
	196	*{ $pkg . '::' . $name } = $code;
	197	return;
	198	}
	199
	200
43165725	201	package
	202	Mouse::Meta::Class;
	203
	204	sub is_anon_class{
	205	return exists $_[0]->{anon_serial_id};
	206	}
	207
	208	sub roles { $_[0]->{roles} }
	209
cccb83de	210	sub linearized_isa { @{ get_linear_isa($_[0]->{package}) } }
cccb83de	211
43165725	212	package
	213	Mouse::Meta::Role;
	214
	215	sub is_anon_role{
	216	return exists $_[0]->{anon_serial_id};
	217	}
	218
	219	sub get_roles { $_[0]->{roles} }
	220
	221	package
	222	Mouse::Meta::Attribute;
	223
d7d8d49b	224	use Mouse::Meta::Method::Accessor;
43165725	225
	226	# readers
	227
	228	sub name { $_[0]->{name} }
	229	sub associated_class { $_[0]->{associated_class} }
	230
	231	sub accessor { $_[0]->{accessor} }
	232	sub reader { $_[0]->{reader} }
	233	sub writer { $_[0]->{writer} }
	234	sub predicate { $_[0]->{predicate} }
	235	sub clearer { $_[0]->{clearer} }
	236	sub handles { $_[0]->{handles} }
	237
	238	sub _is_metadata { $_[0]->{is} }
	239	sub is_required { $_[0]->{required} }
	240	sub default { $_[0]->{default} }
	241	sub is_lazy { $_[0]->{lazy} }
	242	sub is_lazy_build { $_[0]->{lazy_build} }
	243	sub is_weak_ref { $_[0]->{weak_ref} }
	244	sub init_arg { $_[0]->{init_arg} }
	245	sub type_constraint { $_[0]->{type_constraint} }
	246
	247	sub trigger { $_[0]->{trigger} }
	248	sub builder { $_[0]->{builder} }
	249	sub should_auto_deref { $_[0]->{auto_deref} }
	250	sub should_coerce { $_[0]->{coerce} }
	251
d899d3e7	252	sub documentation { $_[0]->{documentation} }
d899d3e7	253
43165725	254	# predicates
	255
	256	sub has_accessor { exists $_[0]->{accessor} }
	257	sub has_reader { exists $_[0]->{reader} }
	258	sub has_writer { exists $_[0]->{writer} }
	259	sub has_predicate { exists $_[0]->{predicate} }
	260	sub has_clearer { exists $_[0]->{clearer} }
	261	sub has_handles { exists $_[0]->{handles} }
	262
	263	sub has_default { exists $_[0]->{default} }
	264	sub has_type_constraint { exists $_[0]->{type_constraint} }
	265	sub has_trigger { exists $_[0]->{trigger} }
	266	sub has_builder { exists $_[0]->{builder} }
	267
d899d3e7	268	sub has_documentation { exists $_[0]->{documentation} }
d899d3e7	269
93540011	270	sub accessor_metaclass(){ 'Mouse::Meta::Method::Accessor' }
93540011	271
43165725	272	package
	273	Mouse::Meta::TypeConstraint;
	274
	275	sub name { $_[0]->{name} }
	276	sub parent { $_[0]->{parent} }
	277	sub message { $_[0]->{message} }
	278
	279	sub _compiled_type_constraint{ $_[0]->{compiled_type_constraint} }
	280
93540011	281	sub _compiled_type_coercion { $_[0]->{_compiled_type_coercion} }
df6dd016	282
93540011	283	sub has_coercion{ exists $_[0]->{_compiled_type_coercion} }
df6dd016	284
	285	1;
	286	__END__
ccb38d0b	287
	288	=head1 NAME
	289
	290	Mouse::PurePerl - A Mouse guts in pure Perl
	291
	292	=head1 VERSION
	293
2b68f76d	294	This document describes Mouse version 0.40_03
ccb38d0b	295
	296	=head1 SEE ALSO
	297
	298	L<Mouse::XS>
	299
	300	=cut