#ifndef RES_H
#define RES_H

#include "ast.h"
#include "collection.h"

typedef enum {
    OldSym_Typedef,
    OldSym_Declarator,
} OldSymTy;

typedef struct {
    OldSymTy ty;
    union {
        struct {
            AstStmt* stmt;
            AstDeclar* declar;
        } declarator;
    };
} OldSym;

typedef struct Syms Syms;

Syms* syms_new();
void syms_free(Syms* s);

void syms_push_scope(Syms* s);
void syms_pop_scope(Syms* s);

void syms_define(Syms* s, const char* ident, OldSym* sym);
OldSym* syms_get(Syms* s, const char* ident);

typedef struct Resolver Resolver;

Resolver* resolver_new(Arena* arena);
void resolver_free(Resolver* r);

void resolver_resolve_top_stmt(Resolver* r, AstStmt* stmt);

#endif