#ifndef SK_SYM_H
#define SK_SYM_H

#include "commons.h"
#define SK_NO_CLOSURE (-1)
#define SK_NO_NATIVE (-1)
#include "value.h"


extern int IdCounter;

struct symbol
{
    int id;
    int closure_id;
    int native_id;
    char* name;
    bool is_const;
    bool is_global;
    struct env* env;
    struct node* node;
    struct fun* fun;
};

struct env
{
    struct vec symbols;
    struct env* parent;
};

struct sym
{
    struct sym* parent;
    int native_counter;
    int global_counter;
    struct env* env;
};

void env_init(struct env* self);
struct env* env_new_clone(struct env* self);
void env_free(struct env* self);

struct symbol* env_try_get(struct env* self, char const* name);
struct symbol* env_try_get_by_id(struct env* self, int id);

void symbol_init(struct symbol* self,
                 int id,
                 char const* name,
                 struct node* node,
                 struct env* env);

void symbol_free(struct symbol* self);

void sym_init(struct sym* self);
struct sym* sym_new_clone(struct sym* self);
void sym_free(struct sym* self);

int sym_decl_var(struct sym* self, char const* name,
                 struct node* node);
int sym_decl_const(struct sym* self, char const* name,
                   struct node* node);
int sym_decl_closure(struct sym* self, int id, char const* name,
                     struct node* node, struct fun* fun);
int sym_decl_global(struct sym* self, int id, char const* name,
                    struct node* node);

void sym_open_scope(struct sym* self);
void sym_close_scope(struct sym* self);

struct symbol* sym_try_get(struct sym* self, char const* name);
struct symbol* sym_try_get_by_id(struct sym* self, int id);

#endif