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#pragma once
#include "ast.h"
#include <stdbool.h>
#include <stdint.h>
#define VARIABLES_MAX 64
#define FUNCTIONS_MAX 32
// the longest thing a single type can say when emitted
#define TEXT_LENGTH_MAX 255
enum TypeKind
{
KIND_VOID,
KIND_INT32,
KIND_BYTE,
KIND_SIZE,
KIND_ARRAY,
KIND_CHAR,
KIND_CHAR_CONSTANT,
KIND_TUPLE,
KIND_VALUE
};
struct Type
{
enum TypeKind kind;
int64_t number;
char text[TEXT_LENGTH_MAX + 1];
};
struct Variable
{
char name[NAME_LENGTH_MAX + 1];
int64_t value;
bool declared;
};
struct Function
{
char name[NAME_LENGTH_MAX + 1];
const struct Node* node;
bool defined;
};
struct Machine
{
struct Variable variables[VARIABLES_MAX];
struct Function functions[FUNCTIONS_MAX];
struct Type returned;
int depth;
};
enum RunStatus
{
RUN_DONE,
RUN_FAILED,
RUN_RETURNED
};
void machine_init(struct Machine* machine);
enum RunStatus execute(struct Machine* machine, const struct Node* statement);
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