Upsilon/Upsilon/BaseTypes/SimpleScriptTable.cs

using System.Collections.Generic;
using System.Linq;
using Upsilon.BaseTypes.ScriptTypeInterfaces;
using Upsilon.Evaluator;
using Upsilon.Text;

namespace Upsilon.BaseTypes
{
    internal class SimpleScriptTable : ScriptType, IIndexable
    {
        private readonly IList<ScriptType> _objects;

        public SimpleScriptTable(IList<ScriptType> objects)
        {
            _objects = objects;
        }

        public ScriptType Get(Diagnostics diagnostics, TextSpan span, ScriptType index, EvaluationScope scope)
        {
            int i;
            switch (index.Type.Type)
            {
                case BaseTypes.Type.String:
                {
                    var str = (ScriptString)index;
                    i = int.Parse(str.Value) - 1;
                    break;
                }
                case BaseTypes.Type.Number:
                {
                    var ind = (Number.ScriptNumberLong) index;
                    i = (int) ind.Value - 1;
                    break;
                }
                default:
                    return null;
            }

            return _objects[i];
        }

        public ScriptType this[int index] => _objects[index];

        public void Set(Diagnostics diagnostics, TextSpan span, ScriptType index, ScriptType value)
        {
            throw new System.NotImplementedException();
        }

        public override TypeContainer Type => BaseTypes.Type.Table;
        public override object ToCSharpObject()
        {
            return _objects;
        }

        public override System.Type GetCSharpType()
        {
            return _objects.GetType();
        }

        public override string ToString()
        {
            return $"{{{string.Join(", ", _objects.Select(x => x.ToString()))}}}";
        }
    }
}