/// <summary>
/// program : program_statement+ ;
/// </summary>
override public Shell.Types.IShellReturnable VisitProgram(ShellParser.ProgramContext context)
{
var statements = context.program_statement();
Shell.Types.IShellReturnable lastResult = defaultReturnValue;
foreach (var statement in statements)
{
lastResult = VisitProgram_statement(statement);
if (lastResult is Shell.Types.String str)
{
logger.Debug($"Result: \"{lastResult}\" of type {lastResult.GetType()}");
}
else if (lastResult is Shell.Types.Array arr)
{
logger.Debug($"Result: {lastResult} of type {lastResult.GetType()} and length {arr.Count()}");
}
else if (lastResult is Shell.Types.Object obj)
{
logger.Debug($"Result is an object:\n {obj}");
}
else if (!(lastResult is Shell.Types.None))
{
logger.Debug($"Result: {lastResult} of type {lastResult.GetType()}");
}
}
return(lastResult);
}
/// <summary>
/// Visit a parse tree produced by <see cref="ShellParser.program"/>.
/// <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 VisitProgram([NotNull] ShellParser.ProgramContext context)
{
return(VisitChildren(context));
}
