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}
19 unless $key eq 'handles';
21 elsif ($key eq 'moosify') {
23 map { ref $_ eq 'ARRAY' ? @$_ : $_ }
24 ($old_spec->{$key}, $new_spec->{$key})
29 $new_spec->{index} = scalar keys %$specs
30 unless defined $new_spec->{index};
31 $specs->{$name} = $new_spec;
36 sub all_attribute_specs {
37 $_[0]->{attribute_specs}
40 sub accessor_generator {
41 $_[0]->{accessor_generator}
44 sub construction_string {
46 $self->{construction_string}
48 .$self->accessor_generator->default_construction_string
54 my $package = $self->{package};
55 defer_sub "${package}::new" => sub {
56 unquote_sub $self->generate_method(
57 $package, 'new', $self->{attribute_specs}, { no_install => 1 }
64 my ($self, $into, $name, $spec, $quote_opts) = @_;
65 foreach my $no_init (grep !exists($spec->{$_}{init_arg}), keys %$spec) {
66 $spec->{$no_init}{init_arg} = $no_init;
68 local $self->{captures} = {};
69 my $body = ' my $class = shift;'."\n"
70 .' $class = ref($class) if ref($class);'."\n";
71 $body .= $self->_handle_subconstructor($into, $name);
72 my $into_buildargs = $into->can('BUILDARGS');
73 if ( $into_buildargs && $into_buildargs != \&Moo::Object::BUILDARGS ) {
74 $body .= $self->_generate_args_via_buildargs;
76 $body .= $self->_generate_args;
78 $body .= $self->_check_required($spec);
79 $body .= ' my $new = '.$self->construction_string.";\n";
80 $body .= $self->_assign_new($spec);
81 if ($into->can('BUILD')) {
82 require Method::Generate::BuildAll;
83 $body .= Method::Generate::BuildAll->new->buildall_body_for(
84 $into, '$new', '$args'
87 $body .= ' return $new;'."\n";
88 if ($into->can('DEMOLISH')) {
89 require Method::Generate::DemolishAll;
90 Method::Generate::DemolishAll->new->generate_method($into);
93 "${into}::${name}" => $body,
94 $self->{captures}, $quote_opts||{}
98 sub _handle_subconstructor {
99 my ($self, $into, $name) = @_;
100 if (my $gen = $self->{subconstructor_handler}) {
101 ' if ($class ne '.perlstring($into).') {'."\n".
110 my ($self, $code, $captures) = @_;
111 @{$self->{captures}}{keys %$captures} = values %$captures if $captures;
115 sub _generate_args_via_buildargs {
117 q{ my $args = $class->BUILDARGS(@_);}."\n"
118 .q{ die "BUILDARGS did not return a hashref" unless ref($args) eq 'HASH';}
122 # inlined from Moo::Object - update that first.
127 if ( scalar @_ == 1 ) {
128 unless ( defined $_[0] && ref $_[0] eq 'HASH' ) {
129 die "Single parameters to new() must be a HASH ref"
130 ." data => ". $_[0] ."\n";
132 $args = { %{ $_[0] } };
135 die "The new() method for $class expects a hash reference or a key/value list."
136 . " You passed an odd number of arguments\n";
146 my ($self, $spec) = @_;
147 my $ag = $self->accessor_generator;
149 NAME: foreach my $name (sort keys %$spec) {
150 my $attr_spec = $spec->{$name};
151 next NAME unless defined($attr_spec->{init_arg})
152 or $ag->has_eager_default($name, $attr_spec);
153 $test{$name} = $attr_spec->{init_arg};
156 my $arg_key = perlstring($test{$_});
157 my $test = "exists \$args->{$arg_key}";
158 my $source = "\$args->{$arg_key}";
159 my $attr_spec = $spec->{$_};
160 $self->_cap_call($ag->generate_populate_set(
161 '$new', $_, $attr_spec, $source, $test, $test{$_},
166 sub _check_required {
167 my ($self, $spec) = @_;
169 map $spec->{$_}{init_arg},
171 my %s = %{$spec->{$_}}; # ignore required if default or builder set
172 $s{required} and not($s{builder} or $s{default})
174 return '' unless @required_init;
175 ' if (my @missing = grep !exists $args->{$_}, qw('
176 .join(' ',@required_init).')) {'."\n"
177 .q{ die "Missing required arguments: ".join(', ', sort @missing);}."\n"