sebastienros.jint/Jint/Runtime/Interpreter/Statements/JintLabeledStatement.cs

namespace Jint.Runtime.Interpreter.Statements;

internal sealed class JintLabeledStatement : JintStatement<LabeledStatement>
{
    private JintStatement _body = null!;
    private string? _labelName;

    public JintLabeledStatement(LabeledStatement statement) : base(statement)
    {
    }

    protected override void Initialize(EvaluationContext context)
    {
        _body = Build(_statement.Body);
        _labelName = _statement.Label.Name;
    }

    protected override Completion ExecuteInternal(EvaluationContext context)
    {
        // TODO: Esprima added Statement.Label, maybe not necessary as this line is finding the
        // containing label and could keep a table per program with all the labels
        // labeledStatement.Body.LabelSet = labeledStatement.Label;
        var result = _body.Execute(context);
        if (result.Type == CompletionType.Break && string.Equals(context.Target, _labelName, StringComparison.Ordinal))
        {
            var value = result.Value;
            return new Completion(CompletionType.Normal, value, _statement);
        }

        return result;
    }
}