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

#ifndef SYMBOL_H
#define SYMBOL_H

#include "register.h"


class SymbolDescriptor; // below

class Symbol : public KeyedObjectRegister<SymbolDescriptor> {
public:
  Symbol() {}
  Symbol(const char *x);
  Symbol(unsigned x);
  Symbol(const Symbol &t);
  void operator = (const Symbol &t);
  static void reset();
  static Symbol create();
  static Symbol sorted(int x);

  class Map;
  friend class Map;

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

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

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

class SymbolDescriptor {
public:
  AgString string;
  Token token_number;
  unsigned token_list_id;
  ParseTree parse_tree;

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

extern Symbol::Map map_token_name;
extern Symbol::Dict tkn_dict;

typedef SymbolDescriptor token_name_map;

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


#endif /* SYMBOL_H */