/* Attribute name introspection. */ static void attr_name(PARROT_INTERP, PMC *nci) { PMC * unused; PMC *capture = Parrot_pcc_get_signature(interp, CURRENT_CONTEXT(interp)); PMC *self = VTABLE_get_pmc_keyed_int(interp, capture, 0); STRING *name = REPR(self)->box_funcs->get_str(interp, STABLE(self), OBJECT_BODY(self)); unused = Parrot_pcc_build_call_from_c_args(interp, capture, "S", name); }
/* Creates a new type with this HOW as its meta-object. */ static void new_type(PARROT_INTERP, PMC *nci) { PMC * unused; /* We first create a new HOW instance. */ PMC *capture = Parrot_pcc_get_signature(interp, CURRENT_CONTEXT(interp)); PMC *self = VTABLE_get_pmc_keyed_int(interp, capture, 0); PMC *HOW = REPR(self)->allocate(interp, STABLE(self)); /* See if we have a representation name; if not default to P6opaque. */ STRING *repr_name = VTABLE_exists_keyed_str(interp, capture, repr_str) ? VTABLE_get_string_keyed_str(interp, capture, repr_str) : p6opaque_str; /* Create a new type object of the desired REPR. (Note that we can't * default to KnowHOWREPR here, since it doesn't know how to actually * store attributes, it's just for bootstrapping knowhow's. */ REPROps *repr_to_use = REPR_get_by_name(interp, repr_name); PMC *type_object = repr_to_use->type_object_for(interp, HOW); /* See if we were given a name; put it into the meta-object if so. */ STRING *name = VTABLE_exists_keyed_str(interp, capture, name_str) ? VTABLE_get_string_keyed_str(interp, capture, name_str) : empty_str; REPR(HOW)->initialize(interp, STABLE(HOW), OBJECT_BODY(HOW)); ((KnowHOWREPRInstance *)PMC_data(HOW))->body.name = name; PARROT_GC_WRITE_BARRIER(interp, HOW); /* Set .WHO to an empty hash. */ STABLE(type_object)->WHO = Parrot_pmc_new(interp, enum_class_Hash); PARROT_GC_WRITE_BARRIER(interp, STABLE_PMC(type_object)); /* Put it into capture to act as return value. */ unused = Parrot_pcc_build_call_from_c_args(interp, capture, "P", type_object); }
/* Introspects the name. */ static void name(PARROT_INTERP, PMC *nci) { PMC * unused; PMC *capture = Parrot_pcc_get_signature(interp, CURRENT_CONTEXT(interp)); PMC *self = VTABLE_get_pmc_keyed_int(interp, capture, 0); STRING *name = ((KnowHOWREPRInstance *)PMC_data(self))->body.name; unused = Parrot_pcc_build_call_from_c_args(interp, capture, "S", name); }
/* Introspects the methods. For now just hand back real method table. */ static void methods(PARROT_INTERP, PMC *nci) { PMC * unused; PMC *capture = Parrot_pcc_get_signature(interp, CURRENT_CONTEXT(interp)); PMC *self = VTABLE_get_pmc_keyed_int(interp, capture, 0); PMC *meths = ((KnowHOWREPRInstance *)PMC_data(self))->body.methods; unused = Parrot_pcc_build_call_from_c_args(interp, capture, "P", meths); }
/* Introspects the MRO. That's just a list with ourself. */ static void mro(PARROT_INTERP, PMC *nci) { PMC * unused; PMC *capture = Parrot_pcc_get_signature(interp, CURRENT_CONTEXT(interp)); PMC *obj = VTABLE_get_pmc_keyed_int(interp, capture, 1); PMC *mro = Parrot_pmc_new(interp, enum_class_ResizablePMCArray); VTABLE_push_pmc(interp, mro, STABLE(obj)->WHAT); unused = Parrot_pcc_build_call_from_c_args(interp, capture, "P", mro); }
/* Attribute new method. */ static void attr_new(PARROT_INTERP, PMC *nci) { PMC * unused; PMC *capture = Parrot_pcc_get_signature(interp, CURRENT_CONTEXT(interp)); PMC *type = VTABLE_get_pmc_keyed_int(interp, capture, 0); STRING *name = VTABLE_get_string_keyed_str(interp, capture, name_str); PMC *self = REPR(type)->allocate(interp, STABLE(type)); REPR(self)->box_funcs->set_str(interp, STABLE(self), OBJECT_BODY(self), name); unused = Parrot_pcc_build_call_from_c_args(interp, capture, "P", self); }
/* Introspects the parents. Since a KnowHOW doesn't support inheritance, * just hand back an empty list. */ static void parents(PARROT_INTERP, PMC *nci) { PMC * unused; PMC *capture = Parrot_pcc_get_signature(interp, CURRENT_CONTEXT(interp)); PMC *empty = Parrot_pmc_new(interp, enum_class_FixedPMCArray); UNUSED(nci); unused = Parrot_pcc_build_call_from_c_args(interp, capture, "P", empty); }
/* Composes the meta-object. */ static void compose(PARROT_INTERP, PMC *nci) { PMC * unused; PMC *capture = Parrot_pcc_get_signature(interp, CURRENT_CONTEXT(interp)); PMC *self = VTABLE_get_pmc_keyed_int(interp, capture, 0); PMC *obj = VTABLE_get_pmc_keyed_int(interp, capture, 1); STABLE(obj)->method_cache = ((KnowHOWREPRInstance *)PMC_data(self))->body.methods; STABLE(obj)->mode_flags = METHOD_CACHE_AUTHORITATIVE; STABLE(obj)->type_check_cache_length = 1; STABLE(obj)->type_check_cache = (PMC **)mem_sys_allocate(sizeof(PMC *)); STABLE(obj)->type_check_cache[0] = obj; unused = Parrot_pcc_build_call_from_c_args(interp, capture, "P", obj); }
/* Finds a method. */ static void find_method(PARROT_INTERP, PMC *nci) { PMC * unused; /* Get methods table out of meta-object and look up method. */ PMC *capture = Parrot_pcc_get_signature(interp, CURRENT_CONTEXT(interp)); PMC *self = VTABLE_get_pmc_keyed_int(interp, capture, 0); PMC *methods = ((KnowHOWREPRInstance *)PMC_data(self))->body.methods; STRING *name = VTABLE_get_string_keyed_int(interp, capture, 2); PMC *method = VTABLE_get_pmc_keyed_str(interp, methods, name); /* Put into capture to act as return value. */ unused = Parrot_pcc_build_call_from_c_args(interp, capture, "P", method); }
/* Adds an attribute meta-object to the list. */ static void add_attribute(PARROT_INTERP, PMC *nci) { PMC * unused; /* Get attributes list out of meta-object. */ PMC *capture = Parrot_pcc_get_signature(interp, CURRENT_CONTEXT(interp)); PMC *self = VTABLE_get_pmc_keyed_int(interp, capture, 0); PMC *attrs = ((KnowHOWREPRInstance *)PMC_data(self))->body.attributes; /* Add meta-attribute to it. */ PMC *meta_attr = VTABLE_get_pmc_keyed_int(interp, capture, 2); VTABLE_push_pmc(interp, attrs, meta_attr); unused = Parrot_pcc_build_call_from_c_args(interp, capture, "P", meta_attr); }
/* Adds a method. */ static void add_method(PARROT_INTERP, PMC *nci) { PMC * unused; /* Get methods table out of meta-object. */ PMC *capture = Parrot_pcc_get_signature(interp, CURRENT_CONTEXT(interp)); PMC *self = VTABLE_get_pmc_keyed_int(interp, capture, 0); PMC *methods = ((KnowHOWREPRInstance *)PMC_data(self))->body.methods; /* Get name and method to add. */ STRING *name = VTABLE_get_string_keyed_int(interp, capture, 2); PMC *method = VTABLE_get_pmc_keyed_int(interp, capture, 3); /* Add it, and return added method as result. */ VTABLE_set_pmc_keyed_str(interp, methods, name, method); unused = Parrot_pcc_build_call_from_c_args(interp, capture, "P", method); }
/* Composes the meta-object. */ static void compose(PARROT_INTERP, PMC *nci) { PMC *repr_info_hash, *repr_info, *type_info, *attr_list, *attr_iter, *unused; PMC *capture = Parrot_pcc_get_signature(interp, CURRENT_CONTEXT(interp)); PMC *self = VTABLE_get_pmc_keyed_int(interp, capture, 0); PMC *obj = VTABLE_get_pmc_keyed_int(interp, capture, 1); UNUSED(nci); /* Do REPR composition. */ repr_info = Parrot_pmc_new(interp, enum_class_ResizablePMCArray); type_info = Parrot_pmc_new(interp, enum_class_ResizablePMCArray); VTABLE_push_pmc(interp, repr_info, type_info); VTABLE_push_pmc(interp, type_info, obj); attr_list = Parrot_pmc_new(interp, enum_class_ResizablePMCArray); attr_iter = VTABLE_get_iter(interp, ((KnowHOWREPRInstance *)PMC_data(self))->body.attributes); while (VTABLE_get_bool(interp, attr_iter)) { PMC *attr = VTABLE_shift_pmc(interp, attr_iter); PMC *attr_hash = Parrot_pmc_new(interp, enum_class_Hash);; VTABLE_set_string_keyed_str(interp, attr_hash, name_str, REPR(attr)->box_funcs->get_str(interp, STABLE(attr), OBJECT_BODY(attr))); VTABLE_push_pmc(interp, attr_list, attr_hash); } VTABLE_push_pmc(interp, type_info, attr_list); VTABLE_push_pmc(interp, type_info, Parrot_pmc_new(interp, enum_class_ResizablePMCArray)); repr_info_hash = Parrot_pmc_new(interp, enum_class_Hash); VTABLE_set_pmc_keyed_str(interp, repr_info_hash, attribute_str, repr_info); REPR(obj)->compose(interp, STABLE(obj), repr_info_hash); /* Set up method and type caches. */ STABLE(obj)->method_cache = ((KnowHOWREPRInstance *)PMC_data(self))->body.methods; STABLE(obj)->mode_flags = METHOD_CACHE_AUTHORITATIVE; STABLE(obj)->type_check_cache_length = 1; STABLE(obj)->type_check_cache = (PMC **)mem_sys_allocate(sizeof(PMC *)); STABLE(obj)->type_check_cache[0] = obj; unused = Parrot_pcc_build_call_from_c_args(interp, capture, "P", obj); }