#ifndef SYMBOLS
#define SYMBOLS

//! Size of symbol hashtable.
/** Optimistically large. Should be a prime, says theory.
 */
#define HASHSIZE 997

#define T_UNDEF		-1
#define T_PROTOCOL	0
#define T_CONST		1
#define T_VAR		2
#define T_SYSCONST	3

#define EOS 0

struct symbol
{
  //! Type of symbol.
  /**
   *\sa T_UNDEF, T_PROTOCOL, T_CONST, T_VAR, T_SYSCONST
   */
  int type;
  //! Line number at which it occurred.
  int lineno;
  //! Ascii string with name of the symbol.
  char *text;
  //! Possible next pointer.
  struct symbol *next;
  //! Used for linking all symbol blocks, freed or in use.
  struct symbol *allocnext;
};

typedef struct symbol *Symbol;

void symbolsInit (void);
void symbolsDone (void);

Symbol get_symb (void);
void free_symb (Symbol s);

void insert (Symbol s);
Symbol lookup (char *s);
void symbolPrint (Symbol s);
Symbol symbolSysConst (char *str);

#endif