using Larkdown.Parser.Ast;
using Larkdown.Parser.Lexer;
using System;
using System.Collections.Generic;
using System.Text;

namespace Larkdown.Parser
{
    public class Parser
    {
		public Parser()
		{
		}

		public Ast.Ast Parse(string source)
		{
			var ast = new Ast.Ast();
			var lexer = new BlockLexer(source);
			var node = new ParagraphNode();
			BlockToken token;

			while ((token = lexer.NextToken()) != null)
			{
				if (String.IsNullOrEmpty(token.Content))
				{
					ast.Add(node);
					node = new ParagraphNode();
				}
				else
				{
					node.AddText(token.Content);
				}
			}

			ast.Add(node);

			return ast;
		}
    }
}