package Mouse::Meta::Method::Constructor;
-use Mouse::Util; # enables strict and warnings
+use Mouse::Util qw(:meta); # enables strict and warnings
-sub _inline_slot{
+sub _inline_create_instance {
+ my(undef, $class_expr) = @_;
+ return "bless {}, $class_expr";
+}
+
+sub _inline_slot {
my(undef, $self_var, $attr_name) = @_;
return sprintf '%s->{q{%s}}', $self_var, $attr_name;
}
+sub _inline_has_slot {
+ my($class, $self_var, $attr_name) = @_;
+
+ return sprintf 'exists(%s)', $class->_inline_slot($self_var, $attr_name);
+}
+
+sub _inline_get_slot {
+ my($class, $self_var, $attr_name) = @_;
+
+ return $class->_inline_slot($self_var, $attr_name);
+}
+
+sub _inline_set_slot {
+ my($class, $self_var, $attr_name, $rvalue) = @_;
+
+ return $class->_inline_slot($self_var, $attr_name) . " = $rvalue";
+}
+
+sub _inline_weaken_slot {
+ my($class, $self_var, $attr_name) = @_;
+
+ return sprintf 'Scalar::Util::weaken(%s)', $class->_inline_slot($self_var, $attr_name);
+}
+
sub _generate_constructor {
my ($class, $metaclass, $args) = @_;
- my $associated_metaclass_name = $metaclass->name;
-
my @attrs = $metaclass->get_all_attributes;
- my $buildall = $class->_generate_BUILDALL($metaclass);
+ my $init_attrs = $class->_generate_processattrs($metaclass, \@attrs);
my $buildargs = $class->_generate_BUILDARGS($metaclass);
- my $processattrs = $class->_generate_processattrs($metaclass, \@attrs);
+ my $buildall = $class->_generate_BUILDALL($metaclass);
my @checks = map { $_ && $_->_compiled_type_constraint }
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};
+ my $class_name = $metaclass->name;
+ my $source = sprintf(<<'END_CONSTRUCTOR', $class_name, __LINE__, __FILE__, $class_name, $buildargs, $class->_inline_create_instance('$class'), $init_attrs, $buildall);
+package %s;
+#line %d "constructor of %s (%s)"
+ sub {
+ my $class = shift;
+ return $class->Mouse::Object::new(@_)
+ if $class ne __PACKAGE__;
# BUILDARGS
- $buildargs;
- my \$instance = bless {}, \$class;
+ %s;
+ # create instance
+ my $instance = %s;
# process attributes
- $processattrs;
+ %s;
# BUILDALL
- $buildall;
- return \$instance;
+ %s;
+ return $instance;
}
-...
+END_CONSTRUCTOR
#warn $source;
my $code;
my $e = do{
my @res;
my $has_triggers;
+ my $strict = $metaclass->__strict_constructor;
+
+ if($strict){
+ push @res, 'my $used = 0;';
+ }
for my $index (0 .. @$attrs - 1) {
my $code = '';
my $init_arg = $attr->init_arg;
my $type_constraint = $attr->type_constraint;
+ my $is_weak_ref = $attr->is_weak_ref;
my $need_coercion;
- my $instance_slot = $method_class->_inline_slot('$instance', $key);
+ my $instance = '$instance';
+ my $instance_slot = $method_class->_inline_get_slot($instance, $key);
my $attr_var = "\$attrs[$index]";
my $constraint_var;
my $post_process = '';
if(defined $type_constraint){
$post_process .= "\$checks[$index]->($instance_slot)";
- $post_process .= " or $attr_var->verify_type_constraint_error(q{$key}, $instance_slot, $constraint_var);\n";
+ $post_process .= " or $attr_var->_throw_type_constraint_error($instance_slot, $constraint_var);\n";
}
- if($attr->is_weak_ref){
- $post_process .= "Scalar::Util::weaken($instance_slot) if ref $instance_slot;\n";
+ if($is_weak_ref){
+ $post_process .= $method_class->_inline_weaken_slot($instance, $key) . " if ref $instance_slot;\n";
}
if (defined $init_arg) {
$value = "$constraint_var->coerce($value)";
}
- $code .= "$instance_slot = $value;\n";
+ $code .= $method_class->_inline_set_slot($instance, $key, $value) . ";\n";
$code .= $post_process;
if ($attr->has_trigger) {
$code .= "push \@triggers, [$attr_var\->{trigger}, $instance_slot];\n";
}
- $code .= "\n} else {\n";
+ if ($strict){
+ $code .= '++$used;' . "\n";
+ }
+
+ $code .= "\n} else {\n"; # $value exists
}
if ($attr->has_default || $attr->has_builder) {
$value = "$constraint_var->coerce($value)";
}
- $code .= "$instance_slot = $value;\n";
+ $code .= $method_class->_inline_set_slot($instance, $key, $value) . ";\n";
+ if($is_weak_ref){
+ $code .= $method_class->_inline_weaken_slot($instance, $key) . ";\n";
+ }
}
}
elsif ($attr->is_required) {
push @res, $code;
}
+ if($strict){
+ push @res, q{if($used < keys %{$args})}
+ . sprintf q{{ %s->_report_unknown_args($metaclass, \@attrs, $args) }}, $method_class;
+ }
+
if($metaclass->is_anon_class){
push @res, q{$instance->{__METACLASS__} = $metaclass;};
}
if($has_triggers){
unshift @res, q{my @triggers;};
- push @res, q{$_->[0]->($instance, $_->[1]) for @triggers;};
+ push @res, q{$_->[0]->($instance, $_->[1]) for @triggers;};
}
return join "\n", @res;
return join "\n", @code;
}
+sub _report_unknown_args {
+ my(undef, $metaclass, $attrs, $args) = @_;
+
+ my @unknowns;
+ my %init_args;
+ foreach my $attr(@{$attrs}){
+ my $init_arg = $attr->init_arg;
+ if(defined $init_arg){
+ $init_args{$init_arg}++;
+ }
+ }
+
+ while(my $key = each %{$args}){
+ if(!exists $init_args{$key}){
+ push @unknowns, $key;
+ }
+ }
+
+ $metaclass->throw_error( sprintf
+ "Unknown attribute passed to the constructor of %s: %s",
+ $metaclass->name, Mouse::Util::english_list(@unknowns),
+ );
+}
+
1;
__END__
=head1 VERSION
-This document describes Mouse version 0.40_06
+This document describes Mouse version 0.50_05
=head1 SEE ALSO
projects / gitmo/Mouse.git / blobdiff