#ifndef VM_H
#define VM_H

#include <stdint.h>

typedef enum vm_type
{
	VM_TYPE_FUNCTION,
	VM_TYPE_INTEGER,
	VM_TYPE_STRING,
	VM_TYPE_ARRAY,
	VM_TYPE_ERROR,
	VM_TYPE_NULL,
} vm_type;

typedef struct vm_var
{
	vm_type type;
	int isNull;
	int nullable;

	union
	{
		char* function;
		int32_t integer;
		char* string;
		struct vm_var* array;
		struct
		{
			char* msg;
			char* code;
		} error;
	} data;
} vm_var;

typedef struct vm
{
	vm_var* vars;
	size_t numvars;
} vm;

//Initiate a VM
vm* vm_create();

//Execute
vm_var* vm_exec();

//Functions to create a variable
vm_var* vm_var_create_function(char* function, int nullable);
vm_var* vm_var_create_integer(int32_t integer, int nullable);
vm_var* vm_var_create_string(char* string, int nullable);
vm_var* vm_var_create_array(vm_var* array, int nullable);
vm_var* vm_var_create_error(char* msg, char* code, int nullable);
vm_var* vm_var_create_null();

#endif