TokenCount.cs

using System;
using System.Text;
using Waher.Persistence.Attributes;
 
namespace Waher.Persistence.FullTextSearch
{
    [TypeName(TypeNameSerialization.None)]
    public class TokenCount
    {
        public TokenCount()
        {
        }
 
        public TokenCount(string Token, params uint[] DocIndex)
        {
            this.Token = Token;
            this.DocIndex = DocIndex;
            this.Block = 0;
        }
 
        public string Token { get; set; }
 
        public uint[] DocIndex { get; set; }
 
        public uint Block { get; set; }
 
        public override string ToString()
        {
            StringBuilder sb = new StringBuilder();
 
            sb.Append(this.Token);
            sb.Append(':');
 
            foreach (uint Index in this.DocIndex)
            {
                sb.Append(Index.ToString());
                sb.Append(' ');
            }
 
            sb.Append('(');
            sb.Append(this.Block.ToString());
            sb.Append(')');
 
            return sb.ToString();
        }
 
        public override bool Equals(object obj)
        {
            int i, c = this.DocIndex.Length;
 
            if (!(obj is TokenCount Token) ||
                this.Token != Token.Token ||
                c != Token.DocIndex.Length ||
                this.Block != Token.Block)
            {
                return false;
            }
 
            for (i = 0; i < c; i++)
            {
                if (this.DocIndex[i] != Token.DocIndex[i])
                    return false;
            }
 
            return true;
        }
 
        public override int GetHashCode()
        {
            int Result;
 
            Result = this.Token?.GetHashCode() ?? 0;
            Result ^= Result << 5 ^ this.Block.GetHashCode();
 
            if (!(this.DocIndex is null))
            {
                foreach (uint Index in this.DocIndex)
                    Result ^= Result << 5 ^ Index.GetHashCode();
            }
 
            return Result;
        }
    }
}