vm.h

#ifndef CLOX_VM_H
#define CLOX_VM_H

#include "chunk.h"
#include "object.h"
#include "table.h"
#include "value.h"

#define FRAMES_MAX 64
#define STACK_MAX (FRAMES_MAX * UINT8_COUNT)

typedef struct {
  obj_closure_t* closure;
  uint8_t* ip;
  value_t* slots;
} call_frame_t;

typedef struct {
    call_frame_t frames[STACK_MAX];
    int frame_count;

    value_t stack[STACK_MAX];
    value_t *stack_top;
    table_t globals;
    table_t strings;
    obj_string_t* init_string;
    obj_upvalue_t* open_upvalues;

    size_t bytes_allocated;
    size_t next_gc;

    object_t* objects;
    int gray_count;
    int gray_capacity;
    object_t** gray_stack;
} vm_t;

typedef enum {
    INTERPRET_OK,
    INTERPRET_COMPILE_ERROR,
    INTERPRET_RUNTIME_ERROR
} interpret_result_t;

extern vm_t vm;

void init_vm();
void free_vm();
interpret_result_t interpret(const char* source);
void push(value_t value);
value_t pop();

#endif