public override AstNode VisitWhileStmt(StannumParser.WhileStmtContext context)
{
if (!(Visit(context.Value) is Expr value))
{
throw new Exception("Unrecognized expression!");
}
if (!(Visit(context.Body) is BlockStmt body))
{
throw new Exception("Unrecognized block!");
}
if (context.Label == null)
{
return(new WhileStmt(null, value, body));
}
if (!(Visit(context.Label) is Identifier label))
{
throw new Exception("Unrecognized identifier!");
}
return(new WhileStmt(label.Value, value, body));
}
/// <summary>
/// Visit a parse tree produced by <see cref="StannumParser.whileStmt"/>.
/// <para>
/// The default implementation returns the result of calling <see cref="AbstractParseTreeVisitor{Result}.VisitChildren(IRuleNode)"/>
/// on <paramref name="context"/>.
/// </para>
/// </summary>
/// <param name="context">The parse tree.</param>
/// <return>The visitor result.</return>
public virtual Result VisitWhileStmt([NotNull] StannumParser.WhileStmtContext context)
{
return(VisitChildren(context));
}