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(** Copyright 2025-2026, Victoria Ostrovskaya & Danil Usoltsev *)
(** SPDX-License-Identifier: LGPL-3.0-or-later *)
open Architecture
open Riscv_backend
module type NAMING = sig
type t
val init : t
val fresh_partial : t -> string * t
val fresh_branch : t -> (string * string) * t
end
module Default_naming : NAMING = struct
type t = int
let init = 0
let fresh_partial n = "part_" ^ string_of_int n, n + 1
let fresh_branch n = ("else_" ^ string_of_int n, "end_" ^ string_of_int n), n + 1
end
module Make (N : NAMING) = struct
type env = (string, location, Base.String.comparator_witness) Base.Map.t
type state =
{ frame_offset : int
; naming_state : N.t
; arity_map : (string, int, Base.String.comparator_witness) Base.Map.t
; env : env
; instr_buffer : instr list
; current_func_index : int
; symbol_resolve : int -> string -> (string * int) option
}
type 'a t = state -> ('a * state, string) Result.t
let return x st = Ok (x, st)
let fail e = fun _ -> Error e
let bind m f =
fun state ->
match m state with
| Ok (x, st') -> f x st'
| Error e -> Error e
;;
let ( let* ) = bind
let get st = Ok (st, st)
let put st = fun _ -> Ok ((), st)
let modify f =
let* st = get in
put (f st)
;;
let modify_env f = modify (fun st -> { st with env = f st.env })
let get_env =
let* st = get in
return st.env
;;
let set_env env = modify (fun st -> { st with env })
let fresh_partial =
let* st = get in
let name, next = N.fresh_partial st.naming_state in
let* () = put { st with naming_state = next } in
return name
;;
let fresh_branch =
let* st = get in
let pair, next = N.fresh_branch st.naming_state in
let* () = put { st with naming_state = next } in
return pair
;;
let run m = m
let append (items : instr list) =
let modify_instr_buffer f =
modify (fun st -> { st with instr_buffer = f st.instr_buffer })
in
match items with
| [] -> return ()
| _ ->
modify_instr_buffer (fun buffer ->
List.fold_left (fun acc instruction -> instruction :: acc) buffer items)
;;
end
include Make (Default_naming)