package Mouse::Meta::Method::Accessor;
-use strict;
-use warnings;
+use Mouse::Util; # enables strict and warnings
use Scalar::Util qw(blessed);
sub _generate_accessor{
- my (undef, $attribute, $method_name, $class, $type) = @_;
+ my (undef, $attribute, $class, $type) = @_;
my $name = $attribute->name;
my $default = $attribute->default;
my $trigger = $attribute->trigger;
my $is_weak = $attribute->is_weak_ref;
my $should_deref = $attribute->should_auto_deref;
- my $should_coerce = $attribute->should_coerce;
+ my $should_coerce = (defined($constraint) && $constraint->has_coercion && $attribute->should_coerce);
- my $compiled_type_constraint = $constraint ? $constraint->_compiled_type_constraint : undef;
+ my $compiled_type_constraint = defined($constraint) ? $constraint->_compiled_type_constraint : undef;
my $self = '$_[0]';
- my $key = sprintf q{"%s"}, quotemeta $name;
+ my $key = "q{$name}";
+ my $slot = "$self\->{$key}";
$type ||= 'accessor';
- my $accessor =
- '#line ' . __LINE__ . ' "' . __FILE__ . "\"\n" .
- "sub {\n";
+ my $accessor = sprintf(qq{#line 1 "%s for %s (%s)"\n}, $type, $name, __FILE__)
+ . "sub {\n";
if ($type eq 'accessor' || $type eq 'writer') {
if($type eq 'accessor'){
$accessor .=
- '#line ' . __LINE__ . ' "' . __FILE__ . "\"\n" .
'if (scalar(@_) >= 2) {' . "\n";
}
else{ # writer
$accessor .=
- '#line ' . __LINE__ . ' "' . __FILE__ . "\"\n" .
'if(@_ < 2){ Carp::confess("Not enough arguments for the writer of '.$name.'") }'.
'{' . "\n";
}
my $value = '$_[1]';
if (defined $constraint) {
- if(!$compiled_type_constraint){
- Carp::confess("[BUG] Missing compiled type constraint for $constraint");
- }
if ($should_coerce) {
$accessor .=
"\n".
- '#line ' . __LINE__ . ' "' . __FILE__ . "\"\n" .
'my $val = $constraint->coerce('.$value.');';
$value = '$val';
}
$accessor .=
"\n".
- '#line ' . __LINE__ . ' "' . __FILE__ . "\"\n" .
- 'unless ($compiled_type_constraint->('.$value.')) {
- $attribute->verify_type_constraint_error($name, '.$value.', $attribute->{type_constraint});
- }' . "\n";
+ '$compiled_type_constraint->('.$value.') or
+ $attribute->verify_type_constraint_error($name, '.$value.', $constraint);' . "\n";
}
# if there's nothing left to do for the attribute we can return during
# this setter
$accessor .= 'return ' if !$is_weak && !$trigger && !$should_deref;
- $accessor .= $self.'->{'.$key.'} = '.$value.';' . "\n";
+ $accessor .= "$slot = $value;\n";
if ($is_weak) {
- $accessor .= 'Scalar::Util::weaken('.$self.'->{'.$key.'}) if ref('.$self.'->{'.$key.'});' . "\n";
+ $accessor .= "Scalar::Util::weaken($slot) if ref $slot;\n";
}
if ($trigger) {
}
if ($attribute->is_lazy) {
- $accessor .= $self.'->{'.$key.'} = ';
+ my $value;
- if($should_coerce && defined($constraint)){
- $accessor .= '$attribute->_coerce_and_verify(';
+ if (defined $builder){
+ $value = "$self->\$builder()";
+ }
+ elsif (ref($default) eq 'CODE'){
+ $value = "$self->\$default()";
+ }
+ else{
+ $value = '$default';
}
- $accessor .= $attribute->has_builder ? $self.'->$builder'
- : ref($default) eq 'CODE' ? '$default->('.$self.')'
- : '$default';
- if($should_coerce && defined $constraint){
- $accessor .= ')';
+ $accessor .= "if(!exists $slot){\n";
+ if($should_coerce){
+ $accessor .= "$slot = \$constraint->coerce($value)";
+ }
+ elsif(defined $constraint){
+ $accessor .= "my \$tmp = $value;\n";
+ #XXX: The following 'defined and' check is for backward compatibility
+ $accessor .= "defined(\$tmp) and ";
+
+ $accessor .= "\$compiled_type_constraint->(\$tmp)";
+ $accessor .= " || \$attribute->verify_type_constraint_error(\$name, \$tmp, \$constraint);\n";
+ $accessor .= "$slot = \$tmp;\n";
+ }
+ else{
+ $accessor .= "$slot = $value;\n";
}
- $accessor .= ' if !exists '.$self.'->{'.$key.'};' . "\n";
+ $accessor .= "}\n";
}
if ($should_deref) {
if ($constraint->is_a_type_of('ArrayRef')) {
- $accessor .= 'if (wantarray) {
- return @{ '.$self.'->{'.$key.'} || [] };
- }';
+ $accessor .= "return \@{ $slot || [] } if wantarray;\n";
}
elsif($constraint->is_a_type_of('HashRef')){
- $accessor .= 'if (wantarray) {
- return %{ '.$self.'->{'.$key.'} || {} };
- }';
+ $accessor .= "return \%{ $slot || {} } if wantarray;\n";
}
else{
$class->throw_error("Can not auto de-reference the type constraint " . $constraint->name);
}
}
- $accessor .= 'return '.$self.'->{'.$key."};\n}";
+ $accessor .= "return $slot;\n}\n";
- #print $accessor, "\n";
+ #print "# class ", $class->name, "\n", $accessor, "\n";
my $code;
my $e = do{
local $@;
};
die $e if $e;
- if(defined $method_name){
- $class->add_method($method_name => $code);
- }
-
return $code;
}
sub _generate_predicate {
- my (undef, $attribute, $method_name, $class) = @_;
+ my (undef, $attribute, $class) = @_;
my $slot = $attribute->name;
-
- $class->add_method($method_name => sub{
+ return sub{
return exists $_[0]->{$slot};
- });
- return;
+ };
}
sub _generate_clearer {
- my (undef, $attribute, $method_name, $class) = @_;
+ my (undef, $attribute, $class) = @_;
my $slot = $attribute->name;
- $class->add_method($method_name => sub{
+ return sub{
delete $_[0]->{$slot};
- });
- return;
+ };
}
-sub _generate_handles {
- my (undef, $attribute, $handles, $class) = @_;
+sub _generate_delegation{
+ my (undef, $attribute, $class, $reader, $handle_name, $method_to_call) = @_;
+
+ return sub {
+ my $instance = shift;
+ my $proxy = $instance->$reader();
+
+ my $error = !defined($proxy) ? ' is not defined'
+ : ref($proxy) && !blessed($proxy) ? qq{ is not an object (got '$proxy')}
+ : undef;
+ if ($error) {
+ $instance->meta->throw_error(
+ "Cannot delegate $handle_name to $method_to_call because "
+ . "the value of "
+ . $attribute->name
+ . $error
+ );
+ }
+ $proxy->$method_to_call(@_);
+ };
+}
- my $reader = $attribute->reader || $attribute->accessor
- or $class->throw_error("You must pass a reader method for '".$attribute->name."'");
- my %handles = $attribute->_canonicalize_handles($handles);
+1;
+__END__
- foreach my $handle_name (keys %handles) {
- my $method_to_call = $handles{$handle_name};
+=head1 NAME
- my $code = sub {
- my $instance = shift;
- my $proxy = $instance->$reader();
+Mouse::Meta::Method::Accessor - A Mouse method generator for accessors
- my $error = !defined($proxy) ? ' is not defined'
- : ref($proxy) && !blessed($proxy) ? qq{ is not an object (got '$proxy')}
- : undef;
- if ($error) {
- $instance->meta->throw_error(
- "Cannot delegate $handle_name to $method_to_call because "
- . "the value of "
- . $attribute->name
- . $error
- );
- }
- $proxy->$method_to_call(@_);
- };
- $class->add_method($handle_name => $code);
- }
- return;
-}
+=head1 VERSION
+This document describes Mouse version 0.39
-1;
+=head1 SEE ALSO
+
+L<Moose::Meta::Method::Accessor>
+
+=cut
projects / gitmo/Mouse.git / blobdiff