#pragma once
typedef struct Type Type;
typedef struct Expr Expr;
typedef struct Decl Decl;
typedef struct Parser_Error Parser_Error;

typedef enum Symbol_Kind{
  SK_None,
  SK_Type,
  SK_Const,
  SK_Decl,
}Symbol_Kind;

typedef struct Symbol{
  Symbol_Kind kind;
  Intern_String string;
  Token *token;
  struct{
    Type *type;
    struct{
      Type *type;
      Expr *expr;
    } const_val;
    Decl *decl;
  };
}Symbol;

struct Parser_Error{
  Parser_Error *next;
  String message;
  Token *token;
};

typedef struct Parser{
  Arena main_arena;
  Arena intern_table_arena;
  Arena symbol_table_arena;
  
  S64 symbols_inserted;
  Symbol *symbols;
  S64 symbols_count;
  
  S64 interns_in_bytes;
  S64 interns_inserted;
  Intern_String *interns;
  S64 interns_count;
  
  U8 *first_keyword;
  U8 *last_keyword;
  
  Parser_Error *first_error;
  Parser_Error *last_error;
  
  Tokens tokens;
}Parser;

function Intern_String intern_string(Parser *p, String string);
function void type_insert(Parser *p, Type *type, Intern_String string);
function Token *token_get(Parser *p);