// @RubyLevelMethod(name="[]", alias="slice")
public RubyValue aref(RubyValue arg) {
if (arg instanceof RubyFixnum) {
return this.get(arg.toInt());
}
if (arg instanceof RubySymbol) {
throw new RubyException(RubyRuntime.TypeErrorClass, "Symbol as array index");
}
if (arg instanceof RubyRange) {
RubyRange range = (RubyRange) arg;
int begin = range.getLeft().toInt();
int end = range.getRight().toInt();
if (begin < 0) {
begin = this.size() + begin;
}
if (end < 0) {
end = this.size() + end;
}
if (!range.isExcludeEnd()) {
++end;
}
RubyArray resultValue = this.subarray(begin, end - begin);
if (null == resultValue) return RubyConstant.QNIL;
return resultValue;
// return (null == resultValue ? RubyConstant.QNIL : resultValue);
}
return this.get(arg.toInt());
}
// @RubyLevelMethod(name="[]=")
public RubyValue aset(RubyValue arg0, RubyValue arg1) {
if (arg0 instanceof RubyRange) {
RubyRange range = (RubyRange) arg0;
int left = range.getLeft().toInt();
int right = range.getRight().toInt();
int l_index = getRealIndex(size(), left);
int r_index = getRealIndex(size(), right);
int length = r_index - l_index + 1;
return replace(l_index, length, arg1);
} else {
return set(arg0.toInt(), arg1);
}
}