#ifndef CELL_H
#define CELL_H

#include "scanner.h"
#include "style.h"

#ifdef __cplusplus
extern "C" {
#endif

typedef enum
  { BASE_CONT=0, ITER_CONT, STYLE_CONT, MAX_PERSIST_TV = STYLE_CONT,
    CURR_VAL, RES_VAL, STYLE_VAL,
    CONTINGENT /* Must be last, marks end of many loops */
  } TokVariety;
extern const char *TokVariety_Name[];

typedef struct
{
  Token tok[CONTINGENT];
  char *label;
  unsigned int updated:1;
  unsigned int locked:1;
  unsigned int ignored:1;
  unsigned int clock_t0:1;
  unsigned int clock_t1:1;
  unsigned int clock_t2:1;
} Cell;

#define NULLCELL ((Cell*)0)

typedef enum {ALTER_LABEL, PRESERVE_LABEL} LabelHandling;

Token gettok(const Cell *cell, TokVariety v);
bool locked(const Cell *cell);
bool ignored(const Cell *cell);
const char *getlabel(const Cell *cell);
void initcellcontents(Cell *cell);
void freecellcontents(Cell *cell);
void copycell(Cell *to, const Cell *from, LabelHandling lh);

#ifdef __cplusplus
}
#endif

#endif