ccm/lib/sym.h

#ifndef CCM_SYM_H
#define CCM_SYM_H

#include "commons.h"
#include "vec.h"
#include "value.h"

typedef struct {
    char* name;
    int id;
    int local_addr;
    int is_const;
} sym_entry_t;

typedef struct env {
    vec_t entries;
    struct env* parent;
} env_t;

typedef struct {
    env_t* env;
    int id_counter;
} sym_t;

void sym_init(sym_t* self);
void sym_free(sym_t* self);
void sym_free_env(sym_t* self, env_t* env);

void sym_open_scope(sym_t* self);
void sym_close_scope(sym_t* self);

int sym_declare(sym_t* self,
                char const* name,
                int addr,
                int is_const);

int sym_try_assign(sym_t* self,
                   char const* name,
                   int addr);

sym_entry_t* sym_try_get_value(sym_t* self, char const* name);
sym_entry_t* sym_try_get_env_value(sym_t* self,
                                   env_t* env,
                                   char const* name);

#endif