AdventOfCode23/Day21/Parser.cs

using System.Text.RegularExpressions;

namespace Day21;

public partial class Parser
{
    [GeneratedRegex(@".*")]
    private partial Regex LineMatch();
    
    public Map Parse(string inputFile)
    {
         var lines = File.ReadAllLines(inputFile);
         var width = lines.First().Length;
         var height = lines.Length;

         return new Map(width, height, TileFactory(lines));
    }

    private IEnumerable<Tile> TileFactory(string[] lines)
    {
        return lines.SelectMany(l => l).Select(c => new Tile(c));
    }
}