#ifndef __cmt_syntax_h__
#define __cmt_syntax_h__

#include "cmt_map.h"
#include "cmt_string.h"
#include "cmt_system.h"
#include "cmt_use.h"

class Kwd
{
public:
  virtual void action (const CmtSystem::cmt_string_vector& words,
		       Use* use,
		       const cmt_string& file_name,
		       int line_number) = 0;
};

class SyntaxParser
{
public:
  static SyntaxParser& instance ();

  static void parse (const CmtSystem::cmt_string_vector& words,
		     Use* use,
		     const cmt_string& file_name,
		     int line_number);

  static void parse_requirements_line (const cmt_string& line,
				       Use* use,
				       const cmt_string& file_name = "",
				       int line_number = 0);

  static void parse_requirements_text (const cmt_string& text,
				       const cmt_string& file_name,
				       Use* use);

  static void parse_requirements (const cmt_string& file_name, Use* use);

private:

  void do_parse (const CmtSystem::cmt_string_vector& words,
		 Use* use,
		 const cmt_string& file_name,
		 int line_number);

  void do_parse_requirements_line (const cmt_string& line,
				   Use* use,
				   const cmt_string& file_name,
				   int line_number);

  void do_parse_requirements_text (const cmt_string& text,
				   const cmt_string& file_name,
				   Use* use);

  void do_parse_requirements (const cmt_string& file_name, Use* use);

  SyntaxParser ();
  cmt_map <cmt_string, Kwd> m_keywords;
  cmt_string m_filtered_text;
};


class CommandParser
{
public:
  typedef cmt_map <ActionType, cmt_string> HelpMap;
  typedef cmt_vector<cmt_string> HelpTexts;

  static HelpMap& get_help ();
  static HelpTexts& get_help_texts ();
  static const cmt_string& get_help_text (ActionType key);
  static void show_all ();
  static void show (ActionType action);

private:
  static CommandParser& instance ();

  CommandParser ();

  HelpMap m_help;
  HelpTexts m_help_texts;
};



#endif