BadNamedExportExpression.cs

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using BadScript2.Common;
using BadScript2.Optimizations.Folding;
using BadScript2.Runtime;
using BadScript2.Runtime.Error;
using BadScript2.Runtime.Objects;
 
namespace BadScript2.Parser.Expressions.Module;
 
public class BadNamedExportExpression : BadExpression
{
    public BadNamedExportExpression(string? name, BadExpression expression, BadSourcePosition position) :
        base(false, position)
    {
        Expression = expression;
        Name = name;
    }
 
    public BadExpression Expression { get; private set; }
 
    public string? Name { get; }
 
    public override IEnumerable<BadExpression> GetDescendants()
    {
        return Expression.GetDescendantsAndSelf();
    }
 
    protected override IEnumerable<BadObject> InnerExecute(BadExecutionContext context)
    {
        if (string.IsNullOrEmpty(Name))
        {
            throw BadRuntimeException.Create(context.Scope, "Exported objects must have a name", Position);
        }
 
        BadObject? result = BadObject.Null;
 
        foreach (BadObject o in Expression.Execute(context))
        {
            result = o;
 
            yield return o;
        }
 
        result = result.Dereference(Position);
 
        context.Scope.AddExport(Name!, result);
 
        yield return result;
    }
 
    public override void Optimize()
    {
        Expression = BadConstantFoldingOptimizer.Optimize(Expression);
    }
 
    public override string ToString()
    {
        return $"export {Expression}";
    }
}