package Mouse::Meta::Method::Constructor;
-use strict;
-use warnings;
-
-sub generate_constructor_method_inline {
- my ($class, $meta) = @_;
-
- my @attrs = $meta->compute_all_applicable_attributes; # this one is using by evaled code
- my $buildall = $class->_generate_BUILDALL($meta);
- my $buildargs = $class->_generate_BUILDARGS();
- my $processattrs = $class->_generate_processattrs($meta, \@attrs);
-
- my $code = <<"...";
- sub {
- my \$class = shift;
- my \$args = $buildargs;
- my \$instance = bless {}, \$class;
- $processattrs;
- $buildall;
- return \$instance;
- }
+use Mouse::Util; # enables strict and warnings
+
+sub _generate_constructor_method {
+ my ($class, $metaclass, $args) = @_;
+
+ my $associated_metaclass_name = $metaclass->name;
+ my @attrs = $metaclass->get_all_attributes;
+
+ my $buildall = $class->_generate_BUILDALL($metaclass);
+ my $buildargs = $class->_generate_BUILDARGS($metaclass);
+ my $processattrs = $class->_generate_processattrs($metaclass, \@attrs);
+
+ my @compiled_constraints = map { $_ ? $_->_compiled_type_constraint : undef }
+ map { $_->type_constraint } @attrs;
+
+
+
+ my $source = sprintf("#line %d %s\n", __LINE__, __FILE__).<<"...";
+ sub \{
+ my \$class = shift;
+ return \$class->Mouse::Object::new(\@_)
+ if \$class ne q{$associated_metaclass_name};
+ $buildargs;
+ my \$instance = bless {}, \$class;
+ $processattrs;
+ $buildall;
+ return \$instance;
+ }
...
- warn $code if $ENV{DEBUG};
+ my $code;
+ my $e = do{
+ local $@;
+ $code = eval $source;
+ $@;
+ };
+ die $e if $e;
- local $@;
- my $res = eval $code;
- die $@ if $@;
- $res;
+ $metaclass->add_method($args->{constructor_name} => $code);
+ return;
}
sub _generate_processattrs {
- my ($class, $meta, $attrs) = @_;
+ my ($class, $metaclass, $attrs) = @_;
my @res;
- for my $index (0..scalar(@$attrs)-1) {
+
+ my $has_triggers;
+
+ for my $index (0 .. @$attrs - 1) {
my $attr = $attrs->[$index];
- my $from = $attr->init_arg;
my $key = $attr->name;
+ my $code = '';
- my $set_value = do {
- my @code;
+ if (defined $attr->init_arg) {
+ my $from = $attr->init_arg;
- if ($attr->should_coerce) {
- push @code, "my \$value = \$attrs[$index]->coerce_constraint( \$args->{'$from'});";
- }
- else {
- push @code, "my \$value = \$args->{'$from'};";
- }
+ $code .= "if (exists \$args->{q{$from}}) {\n";
- if ($attr->has_type_constraint) {
- push @code, "\$attrs[$index]->verify_type_constraint( \$value );";
+ my $value = "\$args->{q{$from}}";
+ if(my $type_constraint = $attr->type_constraint){
+ if($attr->should_coerce && $type_constraint->has_coercion){
+ $code .= "my \$value = \$attrs[$index]->{type_constraint}->coerce(\$args->{q{$from}});\n";
+ $value = '$value';
+ }
+
+ $code .= "\$compiled_constraints[$index]->($value)\n";
+ $code .= " or \$attrs[$index]->verify_type_constraint_error(q{$key}, $value, \$attrs[$index]->{type_constraint});\n";
}
- push @code, "\$instance->{'$key'} = \$value;";
+ $code .= "\$instance->{q{$key}} = $value;\n";
if ($attr->is_weak_ref) {
- push @code, "weaken( \$instance->{'$key'} ) if ref( \$value );";
+ $code .= "Scalar::Util::weaken( \$instance->{q{$key}} ) if ref($value);\n";
}
- if ( $attr->has_trigger ) {
- push @code, "\$attrs[$index]->trigger->( \$instance, \$value, \$attrs[$index] );";
+ if ($attr->has_trigger) {
+ $has_triggers++;
+ $code .= "push \@triggers, [\$attrs[$index]->{trigger}, $value];\n";
}
- join "\n", @code;
- };
+ $code .= "\n} else {\n";
+ }
- my $make_default_value = do {
- my @code;
+ if ($attr->has_default || $attr->has_builder) {
+ unless ($attr->is_lazy) {
+ my $default = $attr->default;
+ my $builder = $attr->builder;
- if ( $attr->has_default || $attr->has_builder ) {
- unless ( $attr->is_lazy ) {
- my $default = $attr->default;
- my $builder = $attr->builder;
+ $code .= "my \$value = ";
- push @code, "my \$value = ";
+ if ($attr->should_coerce && $attr->type_constraint) {
+ $code .= "\$attrs[$index]->_coerce_and_verify(";
+ }
- if ($attr->should_coerce) {
- push @code, "\$attrs[$index]->coerce_constraint(";
- }
- if ($attr->has_builder) {
- push @code, "\$instance->$builder";
- }
- elsif (ref($default) eq 'CODE') {
- push @code, "\$attrs[$index]->default()->(\$instance)";
- }
- elsif (!defined($default)) {
- push @code, 'undef';
- }
- elsif ($default =~ /^\-?[0-9]+(?:\.[0-9]+)$/) {
- push @code, $default;
- }
- else {
- push @code, "'$default'";
- }
+ if ($attr->has_builder) {
+ $code .= "\$instance->$builder()";
+ }
+ elsif (ref($default) eq 'CODE') {
+ $code .= "\$attrs[$index]->{default}->(\$instance)";
+ }
+ elsif (!defined($default)) {
+ $code .= 'undef';
+ }
+ elsif ($default =~ /^\-?[0-9]+(?:\.[0-9]+)$/) {
+ $code .= $default;
+ }
+ else {
+ $code .= "'$default'";
+ }
- if ($attr->should_coerce) {
- push @code, ");";
- }
- else {
- push @code, ";";
- }
+ if ($attr->should_coerce) {
+ $code .= ");\n";
+ }
+ else {
+ $code .= ";\n";
+ }
- if ($attr->has_type_constraint) {
- push @code, "\$attrs[$index]->verify_type_constraint(\$value);";
- }
+ if ($attr->has_type_constraint) {
+ $code .= "{
+ unless (\$attrs[$index]->{type_constraint}->check(\$value)) {
+ \$attrs[$index]->verify_type_constraint_error(q{$key}, \$value, \$attrs[$index]->type_constraint)
+ }
+ }";
+ }
- push @code, "\$instance->{'$key'} = \$value;";
+ $code .= "\$instance->{q{$key}} = \$value;\n";
- if ($attr->is_weak_ref) {
- push @code, "weaken( \$instance->{'$key'} ) if ref( \$value );";
- }
+ if ($attr->is_weak_ref) {
+ $code .= "Scalar::Util::weaken( \$instance->{q{$key}} ) if ref( \$value );\n";
}
- join "\n", @code;
}
- else {
- if ( $attr->is_required ) {
- qq{Carp::confess("Attribute ($key) is required");};
- } else {
- ""
- }
- }
- };
- my $code = <<"...";
- {
- if (exists(\$args->{'$from'})) {
- $set_value;
-...
- if ($make_default_value) {
- $code .= <<"...";
- } else {
- $make_default_value;
-...
}
- $code .= <<"...";
- }
- }
-...
+ elsif ($attr->is_required) {
+ $code .= "Carp::confess('Attribute ($key) is required');";
+ }
+
+ $code .= "}\n" if defined $attr->init_arg;
+
push @res, $code;
}
+
+ if($metaclass->is_anon_class){
+ push @res, q{$instnace->{__METACLASS__} = $metaclass;};
+ }
+
+ if($has_triggers){
+ unshift @res, q{my @triggers;};
+ push @res, q{$_->[0]->($instance, $_->[1]) for @triggers;};
+ }
+
return join "\n", @res;
}
sub _generate_BUILDARGS {
- <<'...';
- do {
+ my($self, $metaclass) = @_;
+
+ if ($metaclass->name->can('BUILDARGS') && $metaclass->name->can('BUILDARGS') != \&Mouse::Object::BUILDARGS) {
+ return 'my $args = $class->BUILDARGS(@_)';
+ }
+
+ return <<'...';
+ my $args;
if ( scalar @_ == 1 ) {
- if ( defined $_[0] ) {
- ( ref( $_[0] ) eq 'HASH' )
+ ( ref( $_[0] ) eq 'HASH' )
|| Carp::confess "Single parameters to new() must be a HASH ref";
- +{ %{ $_[0] } };
- }
- else {
- +{};
- }
+ $args = +{ %{ $_[0] } };
}
else {
- +{@_};
+ $args = +{@_};
}
- };
...
}
sub _generate_BUILDALL {
- my ($class, $meta) = @_;
- return '' unless $meta->name->can('BUILD');
-
- my @code = ();
- push @code, q{no strict 'refs';};
- push @code, q{no warnings 'once';};
- no strict 'refs';
- for my $klass ($meta->linearized_isa) {
- if (*{ $klass . '::BUILD' }{CODE}) {
- push @code, qq{${klass}::BUILD(\$instance, \$args);};
+ my ($class, $metaclass) = @_;
+
+ return '' unless $metaclass->name->can('BUILD');
+
+ my @code;
+ for my $class ($metaclass->linearized_isa) {
+ no strict 'refs';
+ no warnings 'once';
+
+ if (*{ $class . '::BUILD' }{CODE}) {
+ unshift @code, qq{${class}::BUILD(\$instance, \$args);};
}
}
return join "\n", @code;
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