Frey/Class/Loader.pm

package Frey::ClassLoader;
use Moose;

=head1 DESCRIPTION

Load L<Frey> classes

=cut

extends 'Frey';
with 'Frey::Session';

use Data::Dump qw/dump/;
use File::Find;

our $class_path;
our @classes;

=head2 classes

Return all local classes by reading from disk

  my @classes = $o->classes;

=cut

sub classes {
        my $self = shift;
        return @classes if @classes;

        # FIXME there must be better way to do this in Moose style
        finddepth({ no_chdir => 1, wanted => sub {
                return unless m{\.pm$};
                my $class = $_;
                $class =~ s{^lib/}{};
                $class =~ s{\.pm$}{};
                $class =~ s{/}{::}g;
                if ( 0 && $class =~ m{Mojo} ) { # FIXME remove dead code
                        $self->TODO( "Mojo support" );
                        return;
                }
                $class_path->{ $class } = $_;
        } }, 'lib');
        warn "## class_path = ",dump( $class_path ) if $self->debug;

        @classes = sort keys %$class_path;
}

=head2 class_path

Return any local or loaded class

  $path = $o->class_path( $class );

=cut

sub class_path {
        my ( $self, $class ) = @_;
        $self->classes unless $class_path;
        if ( ! defined $class_path->{$class} ) {
                my $path = $class;
                $path =~ s{::}{/}g;
                $path .= '.pm';
                if ( defined $INC{$path} ) {
                        $path = $INC{$path};
                        warn "# $class from INC $path";
                        $class_path->{$class} = $path;
                } else {
                        confess "can't find path for $class";
                }
        }
        return $class_path->{$class};
}

=head2 loaded_classes

  my $available = $o->loaded_classes;
  $available->{'Frey'} # true

=cut

our $loaded_class;
sub loaded_classes { $loaded_class };

=head2 class_meta

  my ( $meta, $is_role, $instance ) = $o->class_meta( 'Some::Class' );

=cut

sub class_meta {
        my ( $self, $class ) = @_;

        $class ||= $self->class if $self->can('class');
        warn "# class_meta $class";

        $self->load_class($class);

        my $meta;
        my $is_role = 0;
        my $instance;

        if ( ! $class->can('meta') ) {
                $instance = Moose::Meta::Class->create_anon_class;
                warn "# class $class isn't Moose, faking anon class" if $self->debug;
                $meta = $instance->meta;
        } elsif( $class->meta->isa('Moose::Meta::Role') ) {
                $is_role = 1;
                $instance = Frey->new;
                warn "# apply $class on $instance";
                $class->meta->apply( $instance );
                $meta = $instance->meta;
        } else {
                $meta = $class->meta;
        }
        return ( $meta, $is_role, $instance );
}

sub load_class {
        my ( $self, $class ) = @_;
        return if $loaded_class->{$class}++;
        eval {
                Class::MOP::load_class($class)
        };
        warn $@ if $@; # && $@ !~ m/role/;
        warn "# load_class $class" if $self->debug && $loaded_class->{$class} == 1;
}

sub load_all_classes {
        my $self = shift;
        warn "# loaded_class = ",dump( $loaded_class ) if $self->debug;
        $self->load_class( $_ ) foreach ( $self->classes );
        $loaded_class;
}

=head2 class_methods

  my @all_methods = $o->class_methods( $class );

  my $class_method = $o->class_methods( $class );
  if ( $class_method->{ $method } ) {
        # $class has $method
  }

=cut

sub class_methods {
        my ( $self, $class ) = @_;

        confess "need class" unless $class;
        if ( ! $class->can('meta') ) {
                warn "# $class doesn't have meta (isn't Moose class)" if $self->debug;
                return;
        }
        my $meta = $class->meta;

        my $attr;
        my $methods;
        $attr->{$_}++ foreach $meta->get_attribute_list;
        my @methods = map { $methods->{$_}++; $_ } grep { ! defined($attr->{$_}) && $_ ne 'meta' } $meta->get_method_list;
        warn "# methods = ",dump( @methods ) if $self->debug;

        return @methods if wantarray;
        return $methods;
}

=head2 class_runnable

  my @runnable_methods = $o->class_runnable( $class );

=cut

sub class_runnable {
        my ( $self, $class ) = @_;
        my @methods = grep { m{^as_} || m{_as_} } $self->class_methods( $class );
        return @methods if wantarray;
        return \@methods;
}

sub class_inputs {
        my ( $self, $class ) = @_;
        my @inputs = grep { m{^(markup/as_data/as_sponge)$} } $self->class_methods( $class );
        return @inputs if wantarray;
        return \@inputs;
}

=head2 new_frey_class

  my $instance = $o->new_frey_class( $class, $params );

This will apply L<Moose::Role> on the fly to provide accessors for
C<data> and C<sponge> in form of C<as_*>

See L<http://www.perlmonks.org/?node_id=602389>

It is used by L<Frey::Run> and L<Frey::Pipe> to create objects

=cut

{
        package Frey::Role::as_data;
        use Moose::Role;

        sub as_data {
                my ($self) = @_;
                $self->data;
        }

        package Frey::Role::as_sponge;
        use Moose::Role;
        sub as_sponge {
                my ($self) = @_;
                $self->sponge;
        }
}

our $syntax_checked_last;

sub new_frey_class {
        my ( $self, $class, $params ) = @_;
        my $instance;

        my $path = $self->class_path( $class );
        if ( $syntax_checked_last->{$class} != -C $path ) {
                my $syntax = `perl -Ilib -wc $path 2>&1`;
                warn "# syntax: $syntax";
                $syntax_checked_last->{$class} = -C $class;
        }

        if ( $class->meta->isa('Moose::Meta::Role') ) {
                $instance = Frey->new;
                Frey::Web->meta->apply( $instance );
                warn "new_frey_class $class role with Frey::Web";
        } else {
                if ( $self->can('request_url') ) {
                        $params->{request_url} = $self->request_url;
                } else {
                        warn "## $self doesn't have request_url";
                }
                $instance = $class->new( %$params ) or confess "can't $class->new".dump( %$params );
                warn "new_frey_class $class";
        }

        if ( $instance->can('data') && ! $instance->can('as_data') ) {
                Frey::Role::as_data->meta->apply( $instance );
                warn "# apply as_data role to $class";
        }
        if ( $instance->can('sponge') && ! $instance->can('as_sponge') ) {
                Frey::Role::as_sponge->meta->apply( $instance );
                warn "# apply as_sponge role to $class";
        }

        if ( ! $instance->can('add_status') ) {
                Frey::Web->meta->apply( $instance );
                warn "# apply Frey::Web role to $class";
        }

        $self->add_status({ $class => $params });
        return $instance;
}

1;
1	dpavlin	100	package Frey::ClassLoader;
2			use Moose;
3
4	dpavlin	308	=head1 DESCRIPTION
5
6			Load L<Frey> classes
7
8			=cut
9
10	dpavlin	100	extends 'Frey';
11	dpavlin	567	with 'Frey::Session';
12	dpavlin	100
13			use Data::Dump qw/dump/;
14			use File::Find;
15
16	dpavlin	308	our $class_path;
17	dpavlin	112	our @classes;
18	dpavlin	100
19	dpavlin	308	=head2 classes
20
21	dpavlin	382	Return all local classes by reading from disk
22
23	dpavlin	308	my @classes = $o->classes;
24
25			=cut
26
27	dpavlin	101	sub classes {
28			my $self = shift;
29	dpavlin	112	return @classes if @classes;
30	dpavlin	101
31			# FIXME there must be better way to do this in Moose style
32			finddepth({ no_chdir => 1, wanted => sub {
33	dpavlin	457	return unless m{\.pm$};
34			my $class = $_;
35			$class =~ s{^lib/}{};
36			$class =~ s{\.pm$}{};
37			$class =~ s{/}{::}g;
38	dpavlin	686	if ( 0 && $class =~ m{Mojo} ) { # FIXME remove dead code
39	dpavlin	567	$self->TODO( "Mojo support" );
40	dpavlin	559	return;
41			}
42	dpavlin	457	$class_path->{ $class } = $_;
43	dpavlin	101	} }, 'lib');
44	dpavlin	308	warn "## class_path = ",dump( $class_path ) if $self->debug;
45	dpavlin	101
46	dpavlin	308	@classes = sort keys %$class_path;
47	dpavlin	101	}
48
49	dpavlin	308	=head2 class_path
50
51	dpavlin	382	Return any local or loaded class
52
53	dpavlin	308	$path = $o->class_path( $class );
54
55			=cut
56
57			sub class_path {
58			my ( $self, $class ) = @_;
59			$self->classes unless $class_path;
60	dpavlin	382	if ( ! defined $class_path->{$class} ) {
61			my $path = $class;
62			$path =~ s{::}{/}g;
63			$path .= '.pm';
64	dpavlin	686	if ( defined $INC{$path} ) {
65			$path = $INC{$path};
66			warn "# $class from INC $path";
67			$class_path->{$class} = $path;
68			} else {
69			confess "can't find path for $class";
70			}
71	dpavlin	382	}
72	dpavlin	308	return $class_path->{$class};
73	dpavlin	101	}
74
75	dpavlin	308	=head2 loaded_classes
76	dpavlin	100
77	dpavlin	308	my $available = $o->loaded_classes;
78			$available->{'Frey'} # true
79	dpavlin	100
80			=cut
81
82	dpavlin	308	our $loaded_class;
83			sub loaded_classes { $loaded_class };
84	dpavlin	100
85	dpavlin	308	=head2 class_meta
86	dpavlin	100
87	dpavlin	431	my ( $meta, $is_role, $instance ) = $o->class_meta( 'Some::Class' );
88	dpavlin	308
89			=cut
90
91			sub class_meta {
92			my ( $self, $class ) = @_;
93
94			$class \|\|= $self->class if $self->can('class');
95			warn "# class_meta $class";
96
97			$self->load_class($class);
98
99	dpavlin	431	my $meta;
100			my $is_role = 0;
101			my $instance;
102
103	dpavlin	308	if ( ! $class->can('meta') ) {
104	dpavlin	431	$instance = Moose::Meta::Class->create_anon_class;
105	dpavlin	457	warn "# class $class isn't Moose, faking anon class" if $self->debug;
106	dpavlin	431	$meta = $instance->meta;
107			} elsif( $class->meta->isa('Moose::Meta::Role') ) {
108	dpavlin	100	$is_role = 1;
109	dpavlin	431	$instance = Frey->new;
110	dpavlin	416	warn "# apply $class on $instance";
111	dpavlin	308	$class->meta->apply( $instance );
112	dpavlin	416	$meta = $instance->meta;
113	dpavlin	431	} else {
114			$meta = $class->meta;
115	dpavlin	100	}
116	dpavlin	431	return ( $meta, $is_role, $instance );
117	dpavlin	100	}
118
119	dpavlin	308	sub load_class {
120			my ( $self, $class ) = @_;
121	dpavlin	457	return if $loaded_class->{$class}++;
122	dpavlin	308	eval {
123	dpavlin	457	Class::MOP::load_class($class)
124	dpavlin	308	};
125			warn $@ if $@; # && $@ !~ m/role/;
126	dpavlin	320	warn "# load_class $class" if $self->debug && $loaded_class->{$class} == 1;
127	dpavlin	308	}
128
129	dpavlin	101	sub load_all_classes {
130			my $self = shift;
131	dpavlin	320	warn "# loaded_class = ",dump( $loaded_class ) if $self->debug;
132	dpavlin	308	$self->load_class( $_ ) foreach ( $self->classes );
133			$loaded_class;
134	dpavlin	101	}
135	dpavlin	100
136	dpavlin	408	=head2 class_methods
137
138	dpavlin	409	my @all_methods = $o->class_methods( $class );
139	dpavlin	408
140	dpavlin	409	my $class_method = $o->class_methods( $class );
141			if ( $class_method->{ $method } ) {
142			# $class has $method
143			}
144
145	dpavlin	408	=cut
146
147			sub class_methods {
148			my ( $self, $class ) = @_;
149
150			confess "need class" unless $class;
151			if ( ! $class->can('meta') ) {
152	dpavlin	457	warn "# $class doesn't have meta (isn't Moose class)" if $self->debug;
153	dpavlin	408	return;
154			}
155			my $meta = $class->meta;
156
157			my $attr;
158	dpavlin	409	my $methods;
159	dpavlin	408	$attr->{$_}++ foreach $meta->get_attribute_list;
160	dpavlin	409	my @methods = map { $methods->{$_}++; $_ } grep { ! defined($attr->{$_}) && $_ ne 'meta' } $meta->get_method_list;
161	dpavlin	408	warn "# methods = ",dump( @methods ) if $self->debug;
162
163	dpavlin	409	return @methods if wantarray;
164			return $methods;
165	dpavlin	408	}
166
167	dpavlin	457	=head2 class_runnable
168
169			my @runnable_methods = $o->class_runnable( $class );
170
171			=cut
172
173			sub class_runnable {
174			my ( $self, $class ) = @_;
175	dpavlin	582	my @methods = grep { m{^as_} \|\| m{_as_} } $self->class_methods( $class );
176	dpavlin	457	return @methods if wantarray;
177			return \@methods;
178			}
179
180			sub class_inputs {
181			my ( $self, $class ) = @_;
182			my @inputs = grep { m{^(markup/as_data/as_sponge)$} } $self->class_methods( $class );
183			return @inputs if wantarray;
184			return \@inputs;
185			}
186
187			=head2 new_frey_class
188
189			my $instance = $o->new_frey_class( $class, $params );
190
191			This will apply L<Moose::Role> on the fly to provide accessors for
192			C<data> and C<sponge> in form of C<as_*>
193
194			See L<http://www.perlmonks.org/?node_id=602389>
195
196			It is used by L<Frey::Run> and L<Frey::Pipe> to create objects
197
198			=cut
199
200			{
201			package Frey::Role::as_data;
202			use Moose::Role;
203
204			sub as_data {
205			my ($self) = @_;
206			$self->data;
207			}
208
209	dpavlin	462	package Frey::Role::as_sponge;
210	dpavlin	457	use Moose::Role;
211			sub as_sponge {
212			my ($self) = @_;
213			$self->sponge;
214			}
215			}
216
217	dpavlin	668	our $syntax_checked_last;
218
219	dpavlin	457	sub new_frey_class {
220			my ( $self, $class, $params ) = @_;
221	dpavlin	590	my $instance;
222	dpavlin	668
223			my $path = $self->class_path( $class );
224			if ( $syntax_checked_last->{$class} != -C $path ) {
225			my $syntax = `perl -Ilib -wc $path 2>&1`;
226			warn "# syntax: $syntax";
227			$syntax_checked_last->{$class} = -C $class;
228			}
229
230	dpavlin	590	if ( $class->meta->isa('Moose::Meta::Role') ) {
231			$instance = Frey->new;
232			Frey::Web->meta->apply( $instance );
233			warn "new_frey_class $class role with Frey::Web";
234			} else {
235	dpavlin	672	if ( $self->can('request_url') ) {
236			$params->{request_url} = $self->request_url;
237			} else {
238			warn "## $self doesn't have request_url";
239			}
240	dpavlin	590	$instance = $class->new( %$params ) or confess "can't $class->new".dump( %$params );
241			warn "new_frey_class $class";
242			}
243
244	dpavlin	457	if ( $instance->can('data') && ! $instance->can('as_data') ) {
245			Frey::Role::as_data->meta->apply( $instance );
246	dpavlin	586	warn "# apply as_data role to $class";
247	dpavlin	457	}
248			if ( $instance->can('sponge') && ! $instance->can('as_sponge') ) {
249			Frey::Role::as_sponge->meta->apply( $instance );
250	dpavlin	586	warn "# apply as_sponge role to $class";
251	dpavlin	457	}
252	dpavlin	519
253	dpavlin	582	if ( ! $instance->can('add_status') ) {
254			Frey::Web->meta->apply( $instance );
255	dpavlin	586	warn "# apply Frey::Web role to $class";
256	dpavlin	582	}
257
258	dpavlin	586	$self->add_status({ $class => $params });
259	dpavlin	457	return $instance;
260			}
261
262	dpavlin	100	1;