#ifndef _vm_h
#define _vm_h

#include <stddef.h>
#include <stdlib.h>
#include <stdint.h>

#include "val.h"

typedef struct {
	// bytecode
	size_t blen;
	size_t bcap;
	uint8_t *b;
	// constants
	size_t clen;
	size_t ccap;
	Val *c;
} Chunk;
Chunk chunk_new();
size_t chunk_wbc(Chunk *ch, uint8_t byte);
size_t chunk_wconst(Chunk *ch, Val v);

#define STACKSIZE 128
typedef struct {
	Chunk *ch;
	size_t ip;
	Val stack[STACKSIZE];
	size_t sp;
} Vm;
Vm vm_new(Chunk *ch);

typedef enum {
	OP_RET,
	OP_LOADK,
	OP_PRINT,

	OP_ADD,
	OP_SUB,
	OP_MUL,
	OP_DIV,
} Op;

void runvm(Chunk *ch);

#endif