EnumerableEncoder.cs

using System;
using System.Collections;
using System.Reflection;
using System.Text;
using Waher.Runtime.Inventory;
 
namespace Waher.Content.Json.ReferenceTypes
{
    public class EnumerableEncoder : IJsonEncoder
    {
        public EnumerableEncoder()
        {
        }
 
        public void Encode(object Object, int? Indent, StringBuilder Json)
        {
            IEnumerable E = (IEnumerable)Object;
            IEnumerator e = E.GetEnumerator();
            bool First = true;
 
            Json.Append('[');
 
            if (Indent.HasValue)
                Indent++;
 
            while (e.MoveNext())
            {
                if (First)
                    First = false;
                else
                    Json.Append(',');
 
                if (Indent.HasValue)
                {
                    Json.AppendLine();
                    Json.Append(new string('\t', Indent.Value));
                }
 
                JSON.Encode(e.Current, Indent, Json);
            }
 
            if (Indent.HasValue)
            {
                Indent--;
 
                if (!First)
                {
                    Json.AppendLine();
                    Json.Append(new string('\t', Indent.Value));
                }
            }
 
            Json.Append(']');
        }
 
        public Grade Supports(Type ObjectType)
        {
            return typeof(IEnumerable).GetTypeInfo().IsAssignableFrom(ObjectType.GetTypeInfo()) ? Grade.Barely : Grade.NotAtAll;
        }
    }
}