skopy/lib/include/sym.h

#ifndef SK_SYM_H
#define SK_SYM_H

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

struct symbol
{
    int id;
    int closure_id;
    char* name;
    bool is_const;
    struct env* env;
};

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

struct sym
{
    int id_counter;
    int closure_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);

void symbol_init(struct symbol* self,
                 int id,
                 char const* name,
                 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);
int sym_decl_const(struct sym* self, char const* name);
int sym_decl_closure(struct sym* self, int id, char const* name);

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);

#endif