BadExponentiationExpression.cs

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using BadScript2.Common;
using BadScript2.Runtime;
using BadScript2.Runtime.Error;
using BadScript2.Runtime.Objects;
using BadScript2.Runtime.Objects.Native;
 
namespace BadScript2.Parser.Expressions.Binary.Math;
 
public class BadExponentiationExpression : BadBinaryExpression
{
    public BadExponentiationExpression(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(Position);
        BadObject right = BadObject.Null;
 
        foreach (BadObject o in Right.Execute(context))
        {
            right = o;
 
            yield return o;
        }
 
        right = right.Dereference(Position);
 
        foreach (BadObject? o in ExpWithOverride(context, left, right, Position))
        {
            yield return o;
        }
    }
 
    public static IEnumerable<BadObject> ExpWithOverride(BadExecutionContext? context,
                                                         BadObject left,
                                                         BadObject right,
                                                         BadSourcePosition position)
    {
        if (left.HasProperty(BadStaticKeys.EXPONENTIATION_OPERATOR_NAME, context?.Scope))
        {
            foreach (BadObject o in ExecuteOperatorOverride(left,
                                                            right,
                                                            context!,
                                                            BadStaticKeys.EXPONENTIATION_OPERATOR_NAME,
                                                            position
                                                           ))
            {
                yield return o;
            }
        }
        else
        {
            yield return Exp(left, right, position);
        }
    }
 
    public static BadObject Exp(BadObject left, BadObject right, BadSourcePosition position)
    {
        if (left is not IBadNumber lNum)
        {
            throw new BadRuntimeException($"Can not apply operator '*' to {left} and {right}", position);
        }
 
        if (right is IBadNumber rNum)
        {
            return BadObject.Wrap(System.Math.Pow((double)lNum.Value, (double)rNum.Value));
        }
 
        throw new BadRuntimeException($"Can not apply operator '*' to {left} and {right}", position);
    }
 
 
    protected override string GetSymbol()
    {
        return "**";
    }
}