AdventOfCode23/Day10/Parser.cs

using System.Text.RegularExpressions;

namespace Day10;

public partial class Parser
{
    [GeneratedRegex(@".*")]
    private partial Regex LineMatch();
    
    public Grid Parse(string inputFile)
    {
        using var reader = File.OpenText(inputFile);
        
        var line = reader.ReadLine()!;
        var width = line.Length;
        var row = 0;
        var tiles = new Tile[width, width];
        
        while (!reader.EndOfStream)
        {
            if (row != 0)
            {
                line = reader.ReadLine()!;
            }
            for (var col = 0; col < line.Length; col++)
            {
                tiles[col, row] = new Tile(line[col], new GridPoint(col, row));
            }
            row++;
        }

        return new Grid(tiles, width, width);
    }
}