// @RubyLevelMethod(name="[]=") public RubyValue array_set(RubyArray args) { String string = toString(); String replacement; int start, end; if (args.size() == 2) { RubyValue arg = args.get(0); replacement = ((RubyString) args.get(1)).toString(); if (arg instanceof RubyString) { String str = ((RubyString) arg).toString(); start = string.indexOf(str); if (start >= 0) { end = start + str.length(); } else { throw new RubyException(RubyRuntime.IndexErrorClass, "string not matched"); } } else if (arg instanceof RubyRange) { RubyRange range = (RubyRange) arg; start = range.getLeft().toInt(); end = range.getRight().toInt(); if (start >= string.length()) { throw new RubyException(RubyRuntime.RangeClass, range.toString() + " out of range"); } } else if (arg instanceof RubyRegexp) { RubyRegexp regexp = (RubyRegexp) arg; RubyMatchData match = regexp.match(string); if (match != null) { String matched = match.toString(); start = string.indexOf(matched); end = matched.length() + start; } else { throw new RubyException(RubyRuntime.IndexErrorClass, "regexp not matched"); } } else { start = arg.toInt(); end = start + 1; } } else { replacement = ((RubyString) args.get(2)).toString(); start = args.get(0).toInt(); end = args.get(1).toInt() + start; if (start > /*=*/ string.length()) { throw new RubyException( RubyRuntime.RangeClass, "Index '" + start + "' out of string:" + string + ";end: '" + end + "';replacement:" + replacement + ""); } } setString(replace(string, start, end, replacement)); return ObjectFactory.createString(replacement); }