MarkdownElement.cs

using System;
using System.Collections.Generic;
using System.Threading.Tasks;
using Waher.Content.Markdown.Rendering;
 
namespace Waher.Content.Markdown.Model
{
    public enum BaselineAlignment
    {
        Center,
 
        Baseline
    }
 
    public abstract class MarkdownElement
    {
        private readonly MarkdownDocument document;
 
        public MarkdownElement(MarkdownDocument Document)
        {
            this.document = Document;
        }
 
        public MarkdownDocument Document => this.document;
 
        public virtual IEnumerable<MarkdownElement> Children => new MarkdownElement[0];
 
        public virtual bool IsBlockElement => false;
 
        public virtual bool SameMetaData(MarkdownElement E)
        {
            return this.GetType() == E.GetType();
        }
 
        public override bool Equals(object obj)
        {
            return this.GetType().Equals(obj.GetType());
        }
 
        public override int GetHashCode()
        {
            return this.GetType().GetHashCode();
        }
 
        public abstract Task Render(IRenderer Output);
 
        public virtual bool OutsideParagraph => false;
 
        public abstract bool InlineSpanElement
        {
            get;
        }
 
        public virtual BaselineAlignment BaselineAlignment => BaselineAlignment.Center;
 
        public virtual bool ForEach(MarkdownElementHandler Callback, object State)
        {
            return Callback(this, State);
        }
 
        protected static bool AreEqual(Array Items1, Array Items2)
        {
            int i, c = Items1.Length;
            if (Items2.Length != c)
                return false;
 
            for (i = 0; i < c; i++)
            {
                if (!Items1.GetValue(i)?.Equals(Items2.GetValue(i)) ?? Items2.GetValue(i) is null)
                    return false;
            }
 
            return true;
        }
 
        protected static int GetHashCode(Array Items)
        {
            int h1 = 0;
            int h2;
 
            foreach (object Item in Items)
            {
                h2 = Item?.GetHashCode() ?? 0;
                h1 = ((h1 << 5) + h1) ^ h2;
            }
 
            return h1;
        }
 
        public override string ToString()
        {
            using (MarkdownRenderer Renderer = new MarkdownRenderer())
            {
                this.Render(Renderer);
                return Renderer.ToString();
            }
        }
 
        public abstract void IncrementStatistics(MarkdownStatistics Statistics);
 
    }
}