int
rb_proc_arity(VALUE proc)
{
rb_vm_block_t *b;
GetProcPtr(proc, b);
return rb_vm_arity_n(b->arity);
}
rb_vm_method_t *
rb_vm_get_method(VALUE klass, VALUE obj, ID mid, int scope)
{
SEL sel = 0;
IMP imp = NULL;
rb_vm_method_node_t *node = NULL;
// TODO honor scope
if (!rb_vm_lookup_method2((Class)klass, mid, &sel, &imp, &node)) {
rb_print_undef(klass, mid, 0);
}
Class k, oklass = (Class)klass;
while ((k = class_getSuperclass(oklass)) != NULL) {
if (!rb_vm_lookup_method(k, sel, NULL, NULL)) {
break;
}
oklass = k;
}
Method method = class_getInstanceMethod((Class)klass, sel);
assert(method != NULL);
int arity;
rb_vm_method_node_t *new_node;
if (node == NULL) {
arity = rb_method_getNumberOfArguments(method) - 2;
new_node = NULL;
}
else {
arity = rb_vm_arity_n(node->arity);
new_node = (rb_vm_method_node_t *)xmalloc(sizeof(rb_vm_method_node_t));
memcpy(new_node, node, sizeof(rb_vm_method_node_t));
}
rb_vm_method_t *m = (rb_vm_method_t *)xmalloc(sizeof(rb_vm_method_t));
m->oclass = (VALUE)oklass;
m->rclass = klass;
GC_WB(&m->recv, obj);
m->sel = sel;
m->arity = arity;
GC_WB(&m->node, new_node);
// Let's allocate a static cache here, since a rb_vm_method_t must always
// point to the method it was created from.
struct mcache *c = (struct mcache *)xmalloc(sizeof(struct mcache));
if (new_node == NULL) {
fill_ocache(c, obj, oklass, imp, sel, method, arity);
}
else {
fill_rcache(c, oklass, sel, new_node);
}
GC_WB(&m->cache, c);
return m;
}
