#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 OldSyms OldSyms;

OldSyms* oldsyms_new();
void oldsyms_free(OldSyms* s);

void oldsyms_push_scope(OldSyms* s);
void oldsyms_pop_scope(OldSyms* s);

void oldsyms_define(OldSyms* s, const char* ident, OldSym* sym);
OldSym* oldsyms_get(OldSyms* s, const char* ident);

typedef struct Resolver Resolver;

Resolver* oldresolver_new(Arena* arena);
void oldresolver_free(Resolver* r);

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

#endif