/// The index into
///
/// of the current token (next token to
///
/// ).
///
/// [
///
/// ]
/// should be
/// LT(1)
/// .
/// This field is set to -1 when the stream is first constructed or when
///
/// is called, indicating that the first token has
/// not yet been fetched from the token source. For additional information,
/// see the documentation of
///
/// for a description of
/// Initializing Methods.
///
protected internal int p = -1;
///