BadInstanceOfExpression.cs

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using BadScript2.Common;
using BadScript2.Parser.Expressions.Binary;
using BadScript2.Runtime;
using BadScript2.Runtime.Error;
using BadScript2.Runtime.Objects;
using BadScript2.Runtime.Objects.Types;
 
namespace BadScript2.Parser.Expressions;
 
public class BadInstanceOfExpression : BadBinaryExpression
{
    public BadInstanceOfExpression(BadExpression left, BadExpression right, BadSourcePosition position) : base(
        left,
        right,
        position
    ) { }
 
    protected override IEnumerable<BadObject> InnerExecute(BadExecutionContext context)
    {
        BadObject left = BadObject.Null;
 
        foreach (BadObject o in Left.Execute(context))
        {
            left = o;
 
            yield return o;
        }
 
        left = left.Dereference();
        BadObject right = BadObject.Null;
 
        foreach (BadObject o in Right.Execute(context))
        {
            right = o;
 
            yield return o;
        }
 
        right = right.Dereference();
 
 
        if (right is not BadClassPrototype type)
        {
            throw BadRuntimeException.Create(context.Scope, $"Right side of {BadStaticKeys.INSTANCE_OF} must be a class", Position);
        }
 
 
        yield return type.IsSuperClassOf(left.GetPrototype());
    }
 
    protected override string GetSymbol()
    {
        return BadStaticKeys.INSTANCE_OF;
    }
}