/**
 * @file   recursivedescent.h
 * @brief  Declaration of a recursive descent IMAP command parser.
 * @author Andreas Aardal Hanssen, Jannis M. Hoffmann
 * @date   2002-2023
 */

#ifndef expectcommand_h_inluded
#define expectcommand_h_inluded

#include "imapparser.h"

#include <stack>
#include <string>

namespace Binc {

  extern std::stack<int> inputBuffer;
  extern int charnr;

  int readChar();
  void unReadChar(int c_in);
  void unReadChar(const std::string &s_in);

  namespace Parser {
    enum class ParseResult { ACCEPT, REJECT, ERROR, TIMEOUT };
  }

  using ParseResult = Parser::ParseResult;

  ParseResult expectTag(std::string &s_in);
  ParseResult expectTagChar(int &c_in);
  ParseResult expectSPACE();

  ParseResult expectFlag(std::vector<std::string> &v_in);

  ParseResult expectListMailbox(std::string &s_in);
  ParseResult expectListWildcards(int &c_in);

  ParseResult expectDateTime(std::string &s_in);
  ParseResult expectTime(std::string &s_in);
  ParseResult expectZone(std::string &s_in);

  ParseResult expectMailbox(std::string &s_in);
  ParseResult expectAstring(std::string &s_in);
  ParseResult expectAtom(std::string &s_in);
  ParseResult expectAtomChar(int &i_in);
  ParseResult expectString(std::string &s_in);

  ParseResult expectDate(std::string &s_in);

  ParseResult expectNumber(unsigned int &i_in);
  ParseResult expectDigit(unsigned int &i_in);
  ParseResult expectDigitNZ(unsigned int &i_in);

  ParseResult expectLiteral(std::string &s_in);
  ParseResult expectQuoted(std::string &s_in);
  ParseResult expectQuotedChar(int &c_in);

  ParseResult expectSet(SequenceSet &s_in);
  ParseResult expectSequenceNum(unsigned int &i_in);
  ParseResult expectNZNumber(unsigned int &i_in);

  ParseResult expectCRLF();
  ParseResult expectCR();
  ParseResult expectLF();

  ParseResult expectThisString(const std::string &s_in);
}

#endif