value.h

//
// Created by Fabian Simon on 29.09.23.
//

#ifndef FAVE_CUH_VALUE_H
#define FAVE_CUH_VALUE_H

#include "common.h"

typedef struct Obj Obj;
typedef struct ObjString ObjString;

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

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

#define IS_BOOL(val)        ((val).type == VAL_BOOL)
#define IS_NIL(val)         ((val).type == VAL_NIL)
#define IS_NUMBER(val)      ((val).type == VAL_NUMBER)
#define IS_OBJ(val)         ((val).type == VAL_OBJ)

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

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

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

bool values_equal(Value a, Value b);
void init_value_array(ValueArray* arr);
void write_value_array(ValueArray* arr, Value val);
void free_value_array(ValueArray* arr);
void print_value(Value value);


#endif //FAVE_CUH_VALUE_H