#ifndef FVM_UTILS_H_
#define FVM_UTILS_H_

#include <stdlib.h>

struct allocator;
typedef struct allocator allocator;

struct result {
    void *value;
    const char* errmsg;
};
typedef struct result result;

#define unwrap(x__) ({ \
    struct result res__ = (x__); \
    if (res__.errmsg != NULL) return res__; \
    res__.value;})

result ok(void *value);
result err(const char *errmsg);

allocator* new_allocator();
void delete_allocator(allocator* allocator);

void* allocate(allocator* allocator, size_t size);

char* safe_sprintf(allocator* alct, const char* format, ...);

#endif // FVM_UTILS_H_