BadLogicAssignAndExpression.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.Logic.Assign;
 
public class BadLogicAssignAndExpression : BadBinaryExpression
{
    public BadLogicAssignAndExpression(BadExpression left, BadExpression right, BadSourcePosition position) : base(
        left,
        right,
        position
    ) { }
 
    protected override IEnumerable<BadObject> InnerExecute(BadExecutionContext context)
    {
        bool hasReturn = false;
        BadObject left = BadObject.Null;
 
        foreach (BadObject o in Left.Execute(context))
        {
            left = o;
 
            yield return o;
        }
 
        if (left is not BadObjectReference leftRef)
        {
            throw new BadRuntimeException($"Left side of {GetSymbol()} must be a reference", Position);
        }
 
        left = left.Dereference();
 
        BadObject right = BadObject.Null;
 
        foreach (BadObject o in Right.Execute(context))
        {
            right = o;
 
            yield return o;
        }
 
        right = right.Dereference();
 
        if (left is IBadBoolean lBool && right is IBadBoolean rBool)
        {
            hasReturn = true;
 
            BadObject r = BadObject.Wrap(lBool.Value && rBool.Value);
            leftRef.Set(r);
 
            yield return r;
        }
 
        if (!hasReturn)
        {
            throw new BadRuntimeException($"Can not apply operator '{GetSymbol()}' to {left} and {right}", Position);
        }
    }
 
 
    protected override string GetSymbol()
    {
        return "&=";
    }
}