object.h

//
// Created by Fabian Simon on 03.10.23.
//

#ifndef FAVE_CUH_OBJECT_H
#define FAVE_CUH_OBJECT_H

#include "common.h"
#include "value.h"
#include "chunk.h"

#define OBJ_TYPE(val)       (AS_OBJ(val)->type)

#define IS_FUNCTION(val)    is_obj_type(val, OBJ_FUNCTION);
#define IS_STRING(val)      is_obj_type(val, OBJ_STRING)

#define AS_FUNCTION(val)    ((ObjFunction*)AS_OBJ(val))
#define AS_STRING(val)      ((ObjString*)AS_OBJ(val))
#define AS_CSTRING(val)     (((ObjString*)AS_OBJ(val))->chars)

typedef enum {
    OBJ_FUNCTION,
    OBJ_STRING,
} ObjType;

struct Obj {
    ObjType type;
    struct Obj* next;
};

typedef struct {
    Obj obj;
    int arity;
    Chunk chunk;
    ObjString* name;
} ObjFunction;

struct ObjString {
    Obj obj;
    int length;
    char* chars;
    uint32_t hash;
};

ObjFunction* new_function();
ObjString* take_string(const char* chars, int length);
ObjString* copy_string(const char* chars, int length);
void print_object(Value val);

static inline bool is_obj_type(Value val, ObjType type) {
    return IS_OBJ(val) && AS_OBJ(val)->type == type;
}

#endif //FAVE_CUH_OBJECT_H