/*
 * AnaGram, A System for Syntax Directed Programming
 * Copyright 1993-2002 Parsifal Software. All Rights Reserved.
 * See the file COPYING for license and usage terms.
 *
 * keyword.h - keywords
 */

#ifndef KEYWORD_H
#define KEYWORD_H

#include "agarray.h"
#include "register.h"


class KeywordDescriptor; // below

class Keyword : public KeyedObjectRegister<KeywordDescriptor> {
public:
  Keyword();
  Keyword(const char *x);
  Keyword(unsigned x);
  Keyword(const Keyword &t);
  void operator = (const Keyword &t);

  static void reset();
  static Keyword create();
  static Keyword sorted(int x);
  static const int first;

  class Map;
  friend class Map;

  class Map {
  public:
    KeywordDescriptor &operator [] (unsigned x);
  };

  class Dict {
  public:
    Keyword add_string(const char *s);
  };
};

#include "agstring.h"
#include "token.h"
#include "tree.h"

class KeywordDescriptor {
public:
  AgString string;
  Token token_number;
  int reserve;

  KeywordDescriptor();
  KeywordDescriptor(const char *s);
  int operator < (const KeywordDescriptor &d) const;
};

Keyword add_string_dict(const char *s, Keyword::Dict &d);

void append_key(int kn);
void build_key_tables(void);
void check_key_reserve(void);
int keyword_problem(unsigned, const AgArray<int>, Keyword);


#endif /* KEYWORD_H */