Upsilon/Upsilon/Binder/BoundStatements/BoundExpressionStatement.cs

using System.Collections;
using System.Collections.Generic;
using Upsilon.Evaluator;
using Upsilon.Text;

namespace Upsilon.Binder
{
    public class BoundExpressionStatement : BoundStatement
    {
        public BoundExpression Expression { get; }
        public override BoundKind Kind => BoundKind.BoundExpressionStatement;

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

        public BoundExpressionStatement(BoundExpression expression, TextSpan span):base(span)
        {
            Expression = expression;
        }

        internal override void Evaluate(EvaluationScope scope, Diagnostics diagnostics, ref EvaluationState state)
        {
            var value = Expression.Evaluate(scope, diagnostics, ref state);
            state.LastValue = value;
        }

        internal override IEnumerator EvaluateCoroutine(EvaluationScope scope, Diagnostics diagnostics, EvaluationState state)
        {
            var value = Expression.Evaluate(scope, diagnostics, ref state);
            state.LastValue = value;
            yield break;
        }
    }
}