| 1 | module List = ListLabels |
| 2 | |
| 3 | module Map = Tiger_map |
| 4 | module Symbol = Tiger_symbol |
| 5 | module Type = Tiger_env_type |
| 6 | |
| 7 | type t = |
| 8 | | Var of |
| 9 | {ty : Type.t} |
| 10 | | Fun of |
| 11 | { formals : Type.t list |
| 12 | ; result : Type.t |
| 13 | } |
| 14 | |
| 15 | type env = |
| 16 | (Symbol.t, t ) Map.t |
| 17 | |
| 18 | let built_in = |
| 19 | [ ("print" , [Type.String] , Type.Unit ) |
| 20 | ; ("flush" , [] , Type.Unit ) |
| 21 | ; ("getchar" , [] , Type.String ) |
| 22 | ; ("ord" , [Type.String] , Type.Int ) |
| 23 | ; ("chr" , [Type.Int] , Type.String ) |
| 24 | ; ("size" , [Type.String] , Type.Int ) |
| 25 | ; ("substring" , [Type.String; Type.Int; Type.Int] , Type.String ) |
| 26 | ; ("concat" , [Type.String; Type.String] , Type.String ) |
| 27 | ; ("not" , [Type.Int] , Type.Int ) |
| 28 | ; ("exit" , [Type.Int] , Type.Unit ) |
| 29 | ] |
| 30 | |> List.map ~f:(fun (name, formals, result) -> |
| 31 | let key = Symbol.of_string name in |
| 32 | let value = Fun {formals; result} in |
| 33 | (key, value) |
| 34 | ) |
| 35 | |> Map.of_list |