1 package Method::Generate::Constructor;
5 use base qw(Moo::Object);
9 sub register_attribute_specs {
10 my ($self, @new_specs) = @_;
11 my $specs = $self->{attribute_specs}||={};
12 while (my ($name, $new_spec) = splice @new_specs, 0, 2) {
13 if ($name =~ s/^\+//) {
14 die "has '+${name}' given but no ${name} attribute already exists"
15 unless my $old_spec = $specs->{$name};
16 foreach my $key (keys %$old_spec) {
17 if (!exists $new_spec->{$key}) {
18 $new_spec->{$key} = $old_spec->{$key}
20 elsif ($key eq 'moosify') {
21 $new_spec->{$key} = [map { ref $_ eq 'ARRAY' ? @$_ : $_ } ($old_spec->{$key}, $new_spec->{$key})];
25 $new_spec->{index} = scalar keys %$specs
26 unless defined $new_spec->{index};
27 $specs->{$name} = $new_spec;
32 sub all_attribute_specs {
33 $_[0]->{attribute_specs}
36 sub accessor_generator {
37 $_[0]->{accessor_generator}
40 sub construction_string {
42 $self->{construction_string}
44 .$self->accessor_generator->default_construction_string
50 my $package = $self->{package};
51 defer_sub "${package}::new" => sub {
52 unquote_sub $self->generate_method(
53 $package, 'new', $self->{attribute_specs}, { no_install => 1 }
60 my ($self, $into, $name, $spec, $quote_opts) = @_;
61 foreach my $no_init (grep !exists($spec->{$_}{init_arg}), keys %$spec) {
62 $spec->{$no_init}{init_arg} = $no_init;
64 local $self->{captures} = {};
65 my $body = ' my $class = shift;'."\n"
66 .' $class = ref($class) if ref($class);'."\n";
67 $body .= $self->_handle_subconstructor($into, $name);
68 my $into_buildargs = $into->can('BUILDARGS');
69 if ( $into_buildargs && $into_buildargs != \&Moo::Object::BUILDARGS ) {
70 $body .= $self->_generate_args_via_buildargs;
72 $body .= $self->_generate_args;
74 $body .= $self->_check_required($spec);
75 $body .= ' my $new = '.$self->construction_string.";\n";
76 $body .= $self->_assign_new($spec);
77 if ($into->can('BUILD')) {
78 require Method::Generate::BuildAll;
79 $body .= Method::Generate::BuildAll->new->buildall_body_for(
80 $into, '$new', '$args'
83 $body .= ' return $new;'."\n";
84 if ($into->can('DEMOLISH')) {
85 require Method::Generate::DemolishAll;
86 Method::Generate::DemolishAll->new->generate_method($into);
89 "${into}::${name}" => $body,
90 $self->{captures}, $quote_opts||{}
94 sub _handle_subconstructor {
95 my ($self, $into, $name) = @_;
96 if (my $gen = $self->{subconstructor_handler}) {
97 ' if ($class ne '.perlstring($into).') {'."\n".
106 my ($self, $code, $captures) = @_;
107 @{$self->{captures}}{keys %$captures} = values %$captures if $captures;
111 sub _generate_args_via_buildargs {
113 q{ my $args = $class->BUILDARGS(@_);}."\n"
114 .q{ die "BUILDARGS did not return a hashref" unless ref($args) eq 'HASH';}
118 # inlined from Moo::Object - update that first.
123 if ( scalar @_ == 1 ) {
124 unless ( defined $_[0] && ref $_[0] eq 'HASH' ) {
125 die "Single parameters to new() must be a HASH ref"
126 ." data => ". $_[0] ."\n";
128 $args = { %{ $_[0] } };
131 die "The new() method for $class expects a hash reference or a key/value list."
132 . " You passed an odd number of arguments\n";
142 my ($self, $spec) = @_;
143 my $ag = $self->accessor_generator;
145 NAME: foreach my $name (sort keys %$spec) {
146 my $attr_spec = $spec->{$name};
147 next NAME unless defined($attr_spec->{init_arg})
148 or $ag->has_eager_default($name, $attr_spec);
149 $test{$name} = $attr_spec->{init_arg};
152 my $arg_key = perlstring($test{$_});
153 my $test = "exists \$args->{$arg_key}";
154 my $source = "\$args->{$arg_key}";
155 my $attr_spec = $spec->{$_};
156 $self->_cap_call($ag->generate_populate_set(
157 '$new', $_, $attr_spec, $source, $test, $test{$_},
162 sub _check_required {
163 my ($self, $spec) = @_;
165 map $spec->{$_}{init_arg},
167 my %s = %{$spec->{$_}}; # ignore required if default or builder set
168 $s{required} and not($s{builder} or $s{default})
170 return '' unless @required_init;
171 ' if (my @missing = grep !exists $args->{$_}, qw('
172 .join(' ',@required_init).')) {'."\n"
173 .q{ die "Missing required arguments: ".join(', ', sort @missing);}."\n"