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Object-Pad-0.58
River stage three • 78 direct dependents • 111 total dependents
42 ++
/ Object::Pad::MOP::Slot

NAME

Object::Pad::MOP::Slot - meta-object representation of data slot of a Object::Pad class

DESCRIPTION

Instances of this class represent a data slot of a class implemented by Object::Pad. Accessors provide information about the slot. The special value method allows access to the value of the given slot on instances of its class, letting the meta-object be used as a proxy to it.

This API should be considered experimental even within the overall context in which Object::Pad is expermental.

METHODS

name

   $name = $metaslot->name

Returns the name of the slot, as a plain string including the leading sigil character.

sigil

   $sigil = $metaslot->sigil

Since version 0.56.

Returns the first character of the slot name, giving just its leading sigil.

class

   $metaclass = $metaslot->class

Returns the Object::Pad::MOP::Class instance representing the class of which this slot is a member.

value

   $current = $metaslot->value( $instance )
   @current = $metaslot->value( $instance )
   %current = $metaslot->value( $instance )

An accessor method which returns the current value of the slot from an object instance.

   $metaslot->value( $instance ) = $new

On scalar slots, this method can also act as an lvalue mutator allowing a new value to be set.

has_attribute

   $exists = $metaslot->has_attribute( $name )

Since version 0.57.

Returns a boolean indicating whether the named attribute has been attached to the slot. The attribute name should not include the leading colon (:) character.

get_attribute_value

   $value = $metaslot->get_attribute_value( $name )

Since version 0.57.

Returns the stored value of an attached attribute, if one exists. If the attribute has not been attached then an exception is thrown.

Note that most core-defined attributes will either store no data at all, or a method name string. This accessor method is provided largely for the benefit of obtaining data defined by third-party attributes, which may more clearly define how that data is generated and used.

AUTHOR

Paul Evans <leonerd@leonerd.org.uk>