#ifndef clox_value_h
#define clox_value_h

#include "common.h"

typedef struct sObj Obj;
typedef struct sObjString ObjString;
typedef struct sObjArray ObjArray;
typedef struct sObjHash ObjHash;

typedef enum {
  VAL_BOOL, VAL_NIL, VAL_NUMBER, VAL_OBJ, VAL_EMPTY
} ValueType;

typedef struct {
  ValueType type;
  union {
    bool boolean;
    double number;
    Obj* obj;
  } as;
} Value;

#define BOOL_VAL(value)   ((Value){ VAL_BOOL, { .boolean = value } })
#define NIL_VAL           ((Value){ VAL_NIL, { .number = 0 } })
#define NUMBER_VAL(value) ((Value){ VAL_NUMBER, { .number = value } })
#define OBJ_VAL(object)   ((Value){ VAL_OBJ, { .obj = (Obj*)object } })
#define EMPTY_VAL         ((Value){ VAL_EMPTY, { .number = 0 } })

#define IS_BOOL(value)    ((value).type == VAL_BOOL)
#define IS_NIL(value)     ((value).type == VAL_NIL)
#define IS_NUMBER(value)  ((value).type == VAL_NUMBER)
#define IS_OBJ(value)     ((value).type == VAL_OBJ)
#define IS_EMPTY(value)   ((value).type == VAL_EMPTY)

#define AS_OBJ(value)     ((value).as.obj)
#define AS_BOOL(value)    ((value).as.boolean)
#define AS_NUMBER(value)  ((value).as.number)

typedef struct {
  int capacity;
  int count;
  Value* values;
} ValueArray;

bool valuesEqual(Value a, Value b);
void initValueArray(ValueArray* array);
void writeValueArray(ValueArray* array, Value value);
void freeValueArray(ValueArray* array);
void printValue(Value value);
uint32_t hashValue(Value value);

#endif