NAME 
classes/parrotclass.pmc - Parrot Class
DESCRIPTION
The structure of a parrot class is reasonably straightforward. The PMC's cached integer value is the number of attribute slots that an object of this type requires. The data pointer holds a pointer to an array of PMCs. That array has:
- 0, PCD_PARENTS
- An array of immediate parents.
- 1, PCD_CLASS_NAME
- The class name PMC.
- 2, PCD_ALL_PARENTS
- A pruned array of all parents, in search order.
- 3, PCD_ATTRIB_OFFS
- A hash, keys are the class names, values are the offsets to their attributes.
- 4, PCD_ATTRIBUTES
- A hash,
the keys are the classname/attrib name pair (separated by a
NULL), while the value is the offset to the attribute. - 5, PCD_CLASS_ATTRIBUTES
- Array of attribute of this class.
- 6, PCD_OBJECT_VTABLE
- Vtable PMC that holds the vtable for objects of this class.
Methods
void init()- Initializes the class.
INTVAL isa(STRING *classname)- Returns whether the class is or inherits from
*classname. PMC *find_method(STRING *name)- Figure out which method PMC we need. By default we just defer to the system method lookup code.
INTVAL can(STRING *method)- Returns whether the class can perform
*method. PMC *get_class()- Return SELF.
STRING *namespace_name()- Return the name of the namespace, which is the classname of ParrotClass classes.
void visit(visit_info *info)- This is used by freeze/thaw to visit the contents of the class.
*infois the visit info, (see include/parrot/pmc_freeze.h).void freeze(visit_info *info)- Used to archive the class.
void thaw(visit_info *info)- Used to unarchive the class.
void thawfinish(visit_info *info)- Create the class from the thawed parents and attributes array.
