@Specialization
public RubyArray keys(RubyHash hash) {
final RubyArray array = new RubyArray(getContext().getCoreLibrary().getArrayClass());
for (Object key : hash.storage.keySet()) {
array.push(key);
}
return array;
}
@Specialization
public RubyArray values(RubyHash hash) {
final RubyArray array = new RubyArray(getContext().getCoreLibrary().getArrayClass());
for (Object value : hash.storage.values()) {
array.push(value);
}
return array;
}
@Specialization
public RubyArray map(VirtualFrame frame, RubyHash hash, RubyProc block) {
final RubyArray result = new RubyArray(getContext().getCoreLibrary().getArrayClass());
for (Map.Entry<Object, Object> entry : hash.storage.entrySet()) {
result.push(yield(frame, block, entry.getKey(), entry.getValue()));
}
return result;
}
@Specialization
public RubyHash construct(Object[] args) {
final RubyHash hash = new RubyHash(getContext().getCoreLibrary().getHashClass());
if (args.length == 1) {
final RubyArray array = (RubyArray) args[0];
for (int n = 0; n < array.size(); n++) {
final RubyArray keyValue = (RubyArray) array.get(n);
hash.put(keyValue.get(0), keyValue.get(1));
}
} else {
if (args.length % 2 != 0) {
// TODO(CS): figure out what error to throw here
throw new UnsupportedOperationException();
}
for (int n = 0; n < args.length; n += 2) {
hash.put(args[n], args[n + 1]);
}
}
return hash;
}