/**
  ******************************************************************************
  * @file           : vm.h
  * @author         : simon
  * @brief          : hand it a chunk of code—literally a Chunk—and it runs it
  * @attention      : None
  * @date           : 2023/8/17
  ******************************************************************************
  */

#ifndef CLOX__VM_H_
#define CLOX__VM_H_

#include "chunk.h"
#include "table.h"

#define STACK_MAX 256

typedef struct {
  Chunk *chunk;
  uint8_t *ip;
  Value stack[STACK_MAX];
  Value *stackTop;// 栈指针
  Table globals;
  Table strings;  //
  Obj *objects;   // 管理分配的 heap 内存
} VM;
typedef enum {
  INTERPRET_OK,
  INTERPRET_COMPILE_ERROR,
  INTERPRET_RUNTIME_ERROR
} InterpretResult;

extern VM  vm;

void initVM();
void freeVM();
/// \brief interpret 执行指令
/// \param source 源代码
/// \return InterpretResult
InterpretResult interpret(const char *source);
void push(Value value);
Value pop();

#endif//CLOX__VM_H_