using System.Collections.Generic;
using Upsilon.BaseTypes;
using Upsilon.Parser;
using Upsilon.Text;

namespace Upsilon.Binder
{
    public class BoundIndexExpression : BoundExpression
    {
        public BoundIndexExpression(BoundExpression identifier, BoundExpression index, TypeContainer type, TextSpan span) : base(span)
        {
            Identifier = identifier;
            Index = index;
            Type = type;
        }

        public BoundExpression Identifier { get; }
        public BoundExpression Index { get; }

        public override BoundKind Kind => BoundKind.BoundIndexExpression;

        public override IEnumerable<BoundNode> GetChildren()
        {
            yield return Identifier;
            yield return Index;
        }

        public override TypeContainer Type { get; }
    }

    public class BoundFullStopIndexExpression : BoundExpression
    {
        public BoundExpression Expression { get; }
        public string Index { get; }

        public BoundFullStopIndexExpression(BoundExpression expression, string index, TypeContainer type, TextSpan span) : base(span)
        {
            Expression = expression;
            Index = index;
            Type = type;
        }

        public override BoundKind Kind => BoundKind.BoundFullstopIndexExpression;

        public override IEnumerable<BoundNode> GetChildren()
        {
            yield return Expression;
        }

        public override TypeContainer Type { get; }
    }
}