BadEqualityExpression.cs

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using BadScript2.Common;
using BadScript2.Runtime;
using BadScript2.Runtime.Objects;
 
namespace BadScript2.Parser.Expressions.Binary.Comparison;
 
public class BadEqualityExpression : BadBinaryExpression
{
    public BadEqualityExpression(BadExpression left, BadExpression right, BadSourcePosition position) : base(
        left,
        right,
        position
    ) { }
 
    public static BadObject Equal(BadObject left, BadObject right)
    {
        return left.Equals(right) ? BadObject.True : BadObject.False;
    }
 
    public static IEnumerable<BadObject> EqualWithOverride(
        BadExecutionContext? caller,
        BadObject left,
        BadObject right,
        BadSourcePosition position)
    {
        if (left.HasProperty(BadStaticKeys.EQUAL_OPERATOR_NAME, caller?.Scope))
        {
            foreach (BadObject o in ExecuteOperatorOverride(
                         left,
                         right,
                         caller!,
                         BadStaticKeys.EQUAL_OPERATOR_NAME,
                         position
                     ))
            {
                yield return o;
            }
        }
        else if (right.HasProperty(BadStaticKeys.EQUAL_OPERATOR_NAME, caller?.Scope))
        {
            foreach (BadObject o in ExecuteOperatorOverride(
                         right,
                         left,
                         caller!,
                         BadStaticKeys.EQUAL_OPERATOR_NAME,
                         position
                     ))
            {
                yield return o;
            }
        }
        else
        {
            yield return Equal(left, right);
        }
    }
 
 
    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();
 
        foreach (BadObject o in EqualWithOverride(context, left, right, Position))
        {
            yield return o;
        }
    }
 
 
    protected override string GetSymbol()
    {
        return "==";
    }
}