ABB.Swum.UnigramTagger.PreTag C# (CSharp) Метод

        public override void PreTag(ProgramElementNode node)
        {
            if (node == null) { return; }

            TagDigits(node.ParsedName);

            if (node.Preamble == null)
            {
                int wordIndex = 0;
                bool checkForMorePreamble = true;
                //identify and tag any preamble words
                while (node.ParsedName.Size() > 1 && checkForMorePreamble)
                {
                    checkForMorePreamble = false;

                    //skip any digits
                    while (wordIndex < node.ParsedName.Size() && node.ParsedName[wordIndex].Tag == PartOfSpeechTag.Digit) { wordIndex++; }

                    //check if word is preamble
                    if (wordIndex < node.ParsedName.Size() - 1)
                    {
                        string word = node.ParsedName[wordIndex].Text;
                        if (word.Length == 1 ||
                            (word.Length == 2 && !pos.IsTwoLetterDictionaryWord(word)) ||
                            (word.Length < 5 && !Regex.IsMatch(word, ".*[gs]et.*") && !pos.IsPotentialVerb(word) &&
                             positionalFrequencies.GetOnlyFrequency(word) == 0 && positionalFrequencies.GetFirstFrequency(word) > 0))
                        {
                            node.ParsedName[wordIndex].Tag = PartOfSpeechTag.Preamble;
                            wordIndex++;
                            checkForMorePreamble = true;
                        }
                    }
                }

                //move preamble words from ParsedName to Preamble
                node.Preamble = node.ParsedName.GetNewEmpty();
                for (int j = 0; j < wordIndex; j++)
                {
                    node.Preamble.Add(node.ParsedName[0]);
                    node.ParsedName.RemoveWord(0);
                }
            }

            TagPrepostions(node.ParsedName);
        }