use Carp 'confess';
use Scalar::Util 'blessed', 'weaken';
+use Try::Tiny;
-our $VERSION = '1.08';
+our $VERSION = '1.12';
$VERSION = eval $VERSION;
our $AUTHORITY = 'cpan:STEVAN';
## generators
sub _generate_accessor_method {
- my $attr = (shift)->associated_attribute;
+ my $self = shift;
+ my $attr = $self->associated_attribute;
+
return sub {
- $attr->set_value($_[0], $_[1]) if scalar(@_) == 2;
+ if (@_ >= 2) {
+ $attr->set_value($_[0], $_[1]);
+ }
$attr->get_value($_[0]);
};
}
-sub _generate_reader_method {
- my $attr = (shift)->associated_attribute;
- return sub {
- confess "Cannot assign a value to a read-only accessor" if @_ > 1;
- $attr->get_value($_[0]);
+sub _generate_accessor_method_inline {
+ my $self = shift;
+ my $attr = $self->associated_attribute;
+
+ return try {
+ $self->_compile_code([
+ 'sub {',
+ 'if (@_ > 1) {',
+ $attr->_inline_set_value('$_[0]', '$_[1]'),
+ '}',
+ $attr->_inline_get_value('$_[0]'),
+ '}',
+ ]);
+ }
+ catch {
+ confess "Could not generate inline accessor because : $_";
};
}
+sub _generate_reader_method {
+ my $self = shift;
+ my $attr = $self->associated_attribute;
-sub _generate_writer_method {
- my $attr = (shift)->associated_attribute;
return sub {
- $attr->set_value($_[0], $_[1]);
+ confess "Cannot assign a value to a read-only accessor"
+ if @_ > 1;
+ $attr->get_value($_[0]);
};
}
-sub _generate_predicate_method {
- my $attr = (shift)->associated_attribute;
- return sub {
- $attr->has_value($_[0])
+sub _generate_reader_method_inline {
+ my $self = shift;
+ my $attr = $self->associated_attribute;
+
+ return try {
+ $self->_compile_code([
+ 'sub {',
+ 'if (@_ > 1) {',
+ # XXX: this is a hack, but our error stuff is terrible
+ $self->_inline_throw_error(
+ '"Cannot assign a value to a read-only accessor"',
+ 'data => \@_'
+ ) . ';',
+ '}',
+ $attr->_inline_get_value('$_[0]'),
+ '}',
+ ]);
+ }
+ catch {
+ confess "Could not generate inline reader because : $_";
};
}
-sub _generate_clearer_method {
- my $attr = (shift)->associated_attribute;
- return sub {
- $attr->clear_value($_[0])
- };
+sub _inline_throw_error {
+ my $self = shift;
+ return 'confess ' . $_[0];
}
-## Inline methods
-
-sub _generate_accessor_method_inline {
- my $self = shift;
- my $attr = $self->associated_attribute;
- my $attr_name = $attr->name;
- my $meta_instance = $attr->associated_class->instance_metaclass;
-
- my ( $code, $e ) = $self->_eval_closure(
- {},
- 'sub {'
- . $meta_instance->inline_set_slot_value('$_[0]', $attr_name, '$_[1]')
- . ' if scalar(@_) == 2; '
- . $meta_instance->inline_get_slot_value('$_[0]', $attr_name)
- . '}'
- );
- confess "Could not generate inline accessor because : $e" if $e;
+sub _generate_writer_method {
+ my $self = shift;
+ my $attr = $self->associated_attribute;
- return $code;
+ return sub {
+ $attr->set_value($_[0], $_[1]);
+ };
}
-sub _generate_reader_method_inline {
- my $self = shift;
- my $attr = $self->associated_attribute;
- my $attr_name = $attr->name;
- my $meta_instance = $attr->associated_class->instance_metaclass;
-
- my ( $code, $e ) = $self->_eval_closure(
- {},
- 'sub {'
- . 'confess "Cannot assign a value to a read-only accessor" if @_ > 1;'
- . $meta_instance->inline_get_slot_value('$_[0]', $attr_name)
- . '}'
- );
- confess "Could not generate inline reader because : $e" if $e;
-
- return $code;
+sub _generate_writer_method_inline {
+ my $self = shift;
+ my $attr = $self->associated_attribute;
+
+ return try {
+ $self->_compile_code([
+ 'sub {',
+ $attr->_inline_set_value('$_[0]', '$_[1]'),
+ '}',
+ ]);
+ }
+ catch {
+ confess "Could not generate inline writer because : $_";
+ };
}
-sub _generate_writer_method_inline {
- my $self = shift;
- my $attr = $self->associated_attribute;
- my $attr_name = $attr->name;
- my $meta_instance = $attr->associated_class->instance_metaclass;
-
- my ( $code, $e ) = $self->_eval_closure(
- {},
- 'sub {'
- . $meta_instance->inline_set_slot_value('$_[0]', $attr_name, '$_[1]')
- . '}'
- );
- confess "Could not generate inline writer because : $e" if $e;
+sub _generate_predicate_method {
+ my $self = shift;
+ my $attr = $self->associated_attribute;
- return $code;
+ return sub {
+ $attr->has_value($_[0])
+ };
}
sub _generate_predicate_method_inline {
- my $self = shift;
- my $attr = $self->associated_attribute;
- my $attr_name = $attr->name;
- my $meta_instance = $attr->associated_class->instance_metaclass;
-
- my ( $code, $e ) = $self->_eval_closure(
- {},
- 'sub {'
- . $meta_instance->inline_is_slot_initialized('$_[0]', $attr_name)
- . '}'
- );
- confess "Could not generate inline predicate because : $e" if $e;
+ my $self = shift;
+ my $attr = $self->associated_attribute;
+
+ return try {
+ $self->_compile_code([
+ 'sub {',
+ $attr->_inline_has_value('$_[0]'),
+ '}',
+ ]);
+ }
+ catch {
+ confess "Could not generate inline predicate because : $_";
+ };
+}
+
+sub _generate_clearer_method {
+ my $self = shift;
+ my $attr = $self->associated_attribute;
- return $code;
+ return sub {
+ $attr->clear_value($_[0])
+ };
}
sub _generate_clearer_method_inline {
- my $self = shift;
- my $attr = $self->associated_attribute;
- my $attr_name = $attr->name;
- my $meta_instance = $attr->associated_class->instance_metaclass;
-
- my ( $code, $e ) = $self->_eval_closure(
- {},
- 'sub {'
- . $meta_instance->inline_deinitialize_slot('$_[0]', $attr_name)
- . '}'
- );
- confess "Could not generate inline clearer because : $e" if $e;
-
- return $code;
+ my $self = shift;
+ my $attr = $self->associated_attribute;
+
+ return try {
+ $self->_compile_code([
+ 'sub {',
+ $attr->_inline_clear_value('$_[0]'),
+ '}',
+ ]);
+ }
+ catch {
+ confess "Could not generate inline clearer because : $_";
+ };
}
1;
=head1 DESCRIPTION
-This is a subclass of <Class::MOP::Method> which is used by
+This is a subclass of C<Class::MOP::Method> which is used by
C<Class::MOP::Attribute> to generate accessor code. It handles
generation of readers, writers, predicates and clearers. For each type
of method, it can either create a subroutine reference, or actually
projects / gitmo/Class-MOP.git / blobdiff