Esempio n. 1
0
        // code is duplicated for optimizations reasons.
        /// <summary>
        /// Searches for one of the fields in the keys
        /// </summary>
        /// <param name="searchDescendants">True to look through the entire subtree, otherwise, false</param>
        /// <param name="anyOfKeys">The keys to look for</param>
        /// <returns></returns>
        public bool SkipToAnyOfFields(string[] anyOfKeys, bool searchDescendants)
        {
            string val;

            if (searchDescendants)
            {
                while (Read())
                {
                    if (1 == _state)                     // key
                    {
                        val = JsonObject.UndecorateString(_pc.GetCapture());
                        if (-1 < Array.IndexOf(anyOfKeys, val))
                        {
                            return(true);
                        }
                    }
                }
                return(false);
            }
            switch (_state)
            {
            case -1:
                if (Read())
                {
                    return(SkipToAnyOfFields(anyOfKeys));
                }
                return(false);

            case 4:
                while (Read() && 1 == _state)                         // first read will move to the child field of the root
                {
                    val = JsonObject.UndecorateString(_pc.GetCapture());
                    if (0 > Array.IndexOf(anyOfKeys, val))
                    {
                        SkipSubtree();                                 // if this field isn't the target so just skip over the rest of it
                    }
                    else
                    {
                        break;
                    }
                }
                return(1 == _state);

            case 1:                     // we're already on a field
                val = JsonObject.UndecorateString(_pc.GetCapture());
                if (-1 < Array.IndexOf(anyOfKeys, val))
                {
                    return(true);
                }
                else if (!SkipSubtree())
                {
                    return(false);
                }

                while (Read() && 1 == _state)                         // first read will move to the child field of the root
                {
                    val = JsonObject.UndecorateString(_pc.GetCapture());
                    if (0 > Array.IndexOf(anyOfKeys, val))
                    {
                        SkipSubtree();                                 // if this field isn't the target just skip over the rest of it
                    }
                    else
                    {
                        break;
                    }
                }
                return(1 == _state);

            default:
                return(false);
            }
        }