using System;

using System.Linq;

using System.Collections.Generic;

    public class Program

    {

        public static void Main(string[] args)

        {

            Console.WriteLine("Hello World!");

            var list = ExtractLookbackTokensForInference(100, new List<int> { 2 }, new List<string> { "." }, "str", 0);

            Console.WriteLine(string.Join<string>(",", list));

            Console.WriteLine(list.Count);

        }

​

        private static List<string> ExtractLookbackTokensForInference(int lookback, List<int> selected_tokens, List<string> selected_tokens_images, string type, int last_invocation_index)

        {

            var start = last_invocation_index - lookback + 1;

            var range = lookback;

            if (start < 0)

            {

                start = 0;

                range = last_invocation_index + 1;

            }

            var token_images = selected_tokens_images.GetRange(start, range);

​

            //enforce "." for the last token

            if (token_images[token_images.Count - 1] != "." && token_images[token_images.Count - 1] != ")")

            {

                token_images[token_images.Count - 1] = ".";

            }

            if(token_images.Count == 1)

            {

                return token_images;

            }

            else if (token_images[token_images.Count - 1] == "." && token_images[token_images.Count - 2] == ")")

            {

                token_images[token_images.Count - 1] = "\n";

                token_images.Add(type);

                token_images.Add(".");

                if (range == 100)

                {

                    token_images = token_images.GetRange(2, range);

                }

​

            }

​

            if (token_images.Count > 1 && (IsNumeric(token_images[token_images.Count - 2]) || IsSymbol(token_images[token_images.Count - 2])))

            {

                token_images.Add(Consts.PrevSymbolOrNum);

            }

​

            return token_images;

        }

​

        public static bool IsNumeric(string value)

        {

            return value.All(char.IsNumber);

        }

​

        public static bool IsSymbol(string value)

        {

            return value.All(char.IsSymbol) || value.All(char.IsPunctuation);

        }

    }

​

​

    internal static class Consts

    {

​

        public const string NullSequence = "N";

        public const string SequenceDelimiter = "~";

        public const string UnicodeStar = "\u2605 ";

        public const string PrevSymbolOrNum = "$SYMBOL_OR_NUM$";

​

        public const int MaxRecommendation = 5;

        public const int PrecedingSequenceLength = 2;

​

        public const string CompletionItemCommand = "vsintellicode.completionItemSelected";

​

        /// <summary>

        /// Allow saving sequences when parent token type is unavailable (for DL models)

        /// </summary>

        public const bool IncludeUnresolvedType = true;

​

        public const string UnresolvedType = "unktype";

    }