1 package Mouse::Meta::Method::Constructor;
5 sub generate_constructor_method_inline {
6 my ($class, $meta) = @_;
8 my @attrs = $meta->compute_all_applicable_attributes; # this one is using by evaled code
9 my $buildall = $class->_generate_BUILDALL($meta);
10 my $buildargs = $class->_generate_BUILDARGS();
11 my $processattrs = $class->_generate_processattrs($meta, \@attrs);
16 my \$args = $buildargs;
17 my \$instance = bless {}, \$class;
24 warn $code if $ENV{DEBUG};
32 sub _generate_processattrs {
33 my ($class, $meta, $attrs) = @_;
35 for my $index (0..scalar(@$attrs)-1) {
36 my $attr = $attrs->[$index];
37 my $from = $attr->init_arg;
38 my $key = $attr->name;
43 if ($attr->should_coerce && $attr->type_constraint) {
44 push @code, "my \$value = Mouse::TypeRegistry->typecast_constraints('".$attr->associated_class->name."', \$attrs[$index]->{find_type_constraint}, \$attrs[$index]->{type_constraint}, \$args->{'$from'});";
47 push @code, "my \$value = \$args->{'$from'};";
50 if ($attr->has_type_constraint) {
51 push @code, "{local \$_ = \$value; unless (\$attrs[$index]->{find_type_constraint}->(\$_)) {";
52 push @code, "\$attrs[$index]->verify_type_constraint_error('$key', \$_, \$attrs[$index]->type_constraint)}}";
55 push @code, "\$instance->{'$key'} = \$value;";
57 if ($attr->is_weak_ref) {
58 push @code, "weaken( \$instance->{'$key'} ) if ref( \$value );";
61 if ( $attr->has_trigger ) {
62 push @code, "\$attrs[$index]->{trigger}->( \$instance, \$value, \$attrs[$index] );";
68 my $make_default_value = do {
71 if ( $attr->has_default || $attr->has_builder ) {
72 unless ( $attr->is_lazy ) {
73 my $default = $attr->default;
74 my $builder = $attr->builder;
76 push @code, "my \$value = ";
78 if ($attr->should_coerce && $attr->type_constraint) {
79 push @code, "Mouse::TypeRegistry->typecast_constraints('".$attr->associated_class->name."', \$attrs[$index]->{find_type_constraint}, \$attrs[$index]->{type_constraint}, ";
81 if ($attr->has_builder) {
82 push @code, "\$instance->$builder";
84 elsif (ref($default) eq 'CODE') {
85 push @code, "\$attrs[$index]->{default}->(\$instance)";
87 elsif (!defined($default)) {
90 elsif ($default =~ /^\-?[0-9]+(?:\.[0-9]+)$/) {
94 push @code, "'$default'";
97 if ($attr->should_coerce) {
104 if ($attr->has_type_constraint) {
105 push @code, "{local \$_ = \$value; unless (\$attrs[$index]->{find_type_constraint}->(\$_)) {";
106 push @code, "\$attrs[$index]->verify_type_constraint_error('$key', \$_, \$attrs[$index]->type_constraint)}}";
109 push @code, "\$instance->{'$key'} = \$value;";
111 if ($attr->is_weak_ref) {
112 push @code, "weaken( \$instance->{'$key'} ) if ref( \$value );";
118 if ( $attr->is_required ) {
119 qq{Carp::confess("Attribute ($key) is required");};
127 if (exists(\$args->{'$from'})) {
130 if ($make_default_value) {
142 return join "\n", @res;
145 sub _generate_BUILDARGS {
148 if ( scalar @_ == 1 ) {
149 if ( defined $_[0] ) {
150 ( ref( $_[0] ) eq 'HASH' )
151 || Carp::confess "Single parameters to new() must be a HASH ref";
165 sub _generate_BUILDALL {
166 my ($class, $meta) = @_;
167 return '' unless $meta->name->can('BUILD');
170 push @code, q{no strict 'refs';};
171 push @code, q{no warnings 'once';};
173 for my $klass ($meta->linearized_isa) {
174 if (*{ $klass . '::BUILD' }{CODE}) {
175 push @code, qq{${klass}::BUILD(\$instance, \$args);};
178 return join "\n", @code;