HaxeCheckstyle/haxe-checkstyle

package checkstyle.utils;

class StringUtils {
    public static function isStringInterpolation(s:String, fileContent:byte.ByteData, pos:Position):Bool {
        var code:Bytes = cast fileContent;
        var quote:String = code.sub(pos.min, 1).toString();
        if (quote != "'") return false;
        var regex:EReg = ~/(^|[^$])\$(\{|[a-zA-Z0-9_]+)/;
        return regex.match(s);
    }

    public static function isEmpty(s:Null<String>):Bool {
        return (s == null) || (s.length <= 0);
    }
}