TextParser/TextParser/Data/DataConversionHelpers.cs

namespace Parsing.Data;

using Parsing;
using Parsing.Tokenization;

public static class DataConversionHelpers
{
    public static List<TNewType> ConvertData<TTokenType, TNewType, TOldType>(this List<IToken> tokenList, Func<TOldType, TNewType> converter) where TTokenType : IValueToken<TOldType>
    {
        var newList = new List<TNewType>();
        foreach (var token in tokenList)
        {
            var typedToken = token as IValueToken<TOldType>;
            if (typedToken == null)
            {
                throw new Exception("Invalid Token type encountered during value conversion");
            }

            newList.Add(converter(typedToken.GetValue()));
        }
        return newList;
    }

    public static List<TNewType> ConvertData<TTokenType, TNewType, TOldType>(this List<IToken> tokenList, Func<TOldType, List<TNewType>> converter) where TTokenType : IValueToken<TOldType>
    {
        var newList = new List<TNewType>();
        foreach (var token in tokenList)
        {
            var typedToken = token as IValueToken<TOldType>;
            if (typedToken == null)
            {
                throw new Exception("Invalid Token type encountered during value conversion");
            }

            newList.AddRange(converter(typedToken.GetValue()));
        }
        return newList;
    }

    public static List<List<TNewType>> ConvertData<TTokenType, TNewType, TOldType>(this List<List<IToken>> tokenListList, Func<TOldType, TNewType> converter) where TTokenType : IValueToken<TOldType>
    {
        var newListList = new List<List<TNewType>>();
        foreach (var tokenList in tokenListList)
        {
            newListList.Add(tokenList.ConvertData<TTokenType, TNewType, TOldType>(converter));
        }
        return newListList;
    }
}