WordNetData.cs

using System.Collections.Generic;
using System.Data.SqlClient;

namespace WordNet.Linq
{
    public static class WordNetData
    {
        private static string ConnectionString
        {
            get
            {
                SqlConnectionStringBuilder builder = new SqlConnectionStringBuilder
                {
                    DataSource = $"{Properties.Settings.Default.WordNet_ServerHost},{Properties.Settings.Default.WordNet_ServerPort}",
                    InitialCatalog = "WordNet",
                    PersistSecurityInfo = true,
                    UserID = "WordNetEditor",
                    Password = "Yxc5R0&cwbNnqfi^R4HjRfJy"
                };
                return builder.ToString();
            }
        }

        /// <summary>The WordNetDataContext singleton used for all Linq-to-SQL operations on the WordNet database.</summary>
        public static WordNetDataContext Context { get; } = new WordNetDataContext(ConnectionString);

        /// <summary>The parts of speech recognized by WordNet.</summary>
        public enum PartOfSpeech
        {
            Unspecified,
            Noun,
            Verb,
            Adjective,
            AdjectiveHead,
            AdjectiveSatellite,
            Adverb
        }

        /// <summary>Maps WordNet part-of-speech codes to values of the <see cref="PartOfSpeech"/> enum</summary>
        private static readonly Dictionary<char, PartOfSpeech> PartOfSpeechMappings = new Dictionary<char, PartOfSpeech>
        {
            { 'n', PartOfSpeech.Noun },
            { 'v', PartOfSpeech.Verb },
            { 'a', PartOfSpeech.AdjectiveHead },
            { 's', PartOfSpeech.AdjectiveSatellite },
            { 'r', PartOfSpeech.Adverb },
        };

        /// <summary>Return the <see cref="PartOfSpeech"/> value corresponding to <paramref name="wordNetPartOfSpeechCode"/>.</summary>
        private static PartOfSpeech PartOfSpeechCorrespondingTo(char wordNetPartOfSpeechCode)
        {
            PartOfSpeech result;
            if (!PartOfSpeechMappings.TryGetValue(wordNetPartOfSpeechCode, out result)) result = PartOfSpeech.Unspecified;
            return result;
        }

        /// <summary>Return true if <paramref name="wordNetPartOfSpeechCode"/> represents PartOfSpeech.Noun</summary>
        internal static bool IsNoun(char wordNetPartOfSpeechCode) => PartOfSpeechCorrespondingTo(wordNetPartOfSpeechCode).Equals(PartOfSpeech.Noun);

        /// <summary>Return true if <paramref name="wordNetPartOfSpeechCode"/> represents PartOfSpeech.Verb</summary>
        internal static bool IsVerb(char wordNetPartOfSpeechCode) => PartOfSpeechCorrespondingTo(wordNetPartOfSpeechCode).Equals(PartOfSpeech.Verb);

        /// <summary>Return true if <paramref name="wordNetPartOfSpeechCode"/> represents PartOfSpeech.Adjective</summary>
        internal static bool IsAdjective(char wordNetPartOfSpeechCode) => IsAdjectiveHead(wordNetPartOfSpeechCode) || IsAdjectiveSatellite(wordNetPartOfSpeechCode);

        /// <summary>Return true if <paramref name="wordNetPartOfSpeechCode"/> represents PartOfSpeech.Adjective</summary>
        internal static bool IsAdjectiveHead(char wordNetPartOfSpeechCode) => PartOfSpeechCorrespondingTo(wordNetPartOfSpeechCode).Equals(PartOfSpeech.AdjectiveHead);

        /// <summary>Return true if <paramref name="wordNetPartOfSpeechCode"/> represents PartOfSpeech.Adjective</summary>
        internal static bool IsAdjectiveSatellite(char wordNetPartOfSpeechCode) => PartOfSpeechCorrespondingTo(wordNetPartOfSpeechCode).Equals(PartOfSpeech.AdjectiveSatellite);

        /// <summary>Return true if <paramref name="wordNetPartOfSpeechCode"/> represents PartOfSpeech.Adverb</summary>
        internal static bool IsAdverb(char wordNetPartOfSpeechCode) => PartOfSpeechCorrespondingTo(wordNetPartOfSpeechCode).Equals(PartOfSpeech.Adverb);

        /// <summary>Return a string that describes the part of speech represented by <paramref name="wordNetPartOfSpeechCode"/> in a well-known form, like you might see in a dictionary.</summary>
        internal static string UserFriendlyPartOfSpeechFrom(char wordNetPartOfSpeechCode) => PartOfSpeechCorrespondingTo(wordNetPartOfSpeechCode) switch
        {
            PartOfSpeech.Noun => "n",
            PartOfSpeech.Verb => "v",
            PartOfSpeech.AdjectiveHead => "adj-h",
            PartOfSpeech.AdjectiveSatellite => "adj-s",
            PartOfSpeech.Adverb => "adv",
            _ => "Unspecified",
        };

        internal static bool PartsOfSpeechMatch(PartOfSpeech partOfSpeech, char wordNetPartOfSpeechCode) => partOfSpeech.Equals(PartOfSpeechCorrespondingTo(wordNetPartOfSpeechCode));
    }
}