Modify src/ast_to_c.ml as a first iteration
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src/ast_to_c.ml
160
src/ast_to_c.ml
@ -1,11 +1,5 @@
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open Ast
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let rec debug_type_pp fmt = function
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| [] -> ()
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| TInt :: t -> Format.fprintf fmt "int %a" debug_type_pp t
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| TBool :: t -> Format.fprintf fmt "bool %a" debug_type_pp t
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| TReal :: t -> Format.fprintf fmt "real %a" debug_type_pp t
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let pp_loc fmt (start, stop) =
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Lexing.(
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Format.fprintf fmt "%s: <l: %d, c: %d> -- <l: %d, c: %d>"
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@ -13,21 +7,60 @@ let pp_loc fmt (start, stop) =
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start.pos_lnum start.pos_cnum
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stop.pos_lnum stop.pos_cnum)
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(* could use an argument instead of redefining these functions, if possible *)
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let rec pp_varlist fmt : t_varlist -> unit = function
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| ([], []) -> ()
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| ([TInt] , IVar h :: []) -> Format.fprintf fmt "%s: int" h
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| ([TReal], RVar h :: []) -> Format.fprintf fmt "%s: real" h
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| ([TBool], BVar h :: []) -> Format.fprintf fmt "%s: bool" h
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| ([TInt] , IVar h :: []) -> Format.fprintf fmt "%s" h
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| ([TReal], RVar h :: []) -> Format.fprintf fmt "%s" h
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| ([TBool], BVar h :: []) -> Format.fprintf fmt "%s" h
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| (TInt :: tl, IVar h :: h' :: l) ->
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Format.fprintf fmt "%s: int, %a" h pp_varlist (tl, h' :: l)
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Format.fprintf fmt "%s, %a" h pp_varlist (tl, h' :: l)
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| (TBool :: tl, BVar h :: h' :: l) ->
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Format.fprintf fmt "%s: bool, %a" h pp_varlist (tl, h' :: l)
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Format.fprintf fmt "%s, %a" h pp_varlist (tl, h' :: l)
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| (TReal :: tl, RVar h :: h' :: l) ->
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Format.fprintf fmt "%s: real, %a" h pp_varlist (tl, h' :: l)
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Format.fprintf fmt "%s, %a" h pp_varlist (tl, h' :: l)
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| _ -> raise (MyTypeError "This exception should not have beed be raised.")
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let rec pp_argvarlist fmt : t_varlist -> unit = function
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| ([], []) -> ()
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| ([TInt] , IVar h :: []) -> Format.fprintf fmt "int %s" h
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| ([TReal], RVar h :: []) -> Format.fprintf fmt "float %s" h
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| ([TBool], BVar h :: []) -> Format.fprintf fmt "bool %s" h
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| (TInt :: tl, IVar h :: h' :: l) ->
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Format.fprintf fmt "int %s, %a" h pp_argvarlist (tl, h' :: l)
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| (TBool :: tl, BVar h :: h' :: l) ->
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Format.fprintf fmt "bool %s, %a" h pp_argvarlist (tl, h' :: l)
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| (TReal :: tl, RVar h :: h' :: l) ->
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Format.fprintf fmt "real %s, %a" h pp_argvarlist (tl, h' :: l)
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| _ -> raise (MyTypeError "This exception should not have beed be raised.")
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let rec pp_decvarlist fmt : t_varlist -> unit = function
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| ([], []) -> ()
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| ([TInt] , IVar h :: []) -> Format.fprintf fmt "int %s;" h
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| ([TReal], RVar h :: []) -> Format.fprintf fmt "float %s;" h
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| ([TBool], BVar h :: []) -> Format.fprintf fmt "bool %s;" h
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| (TInt :: tl, IVar h :: h' :: l) ->
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Format.fprintf fmt "%s: int, %a" h pp_decvarlist (tl, h' :: l)
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| (TBool :: tl, BVar h :: h' :: l) ->
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Format.fprintf fmt "%s: bool, %a" h pp_decvarlist (tl, h' :: l)
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| (TReal :: tl, RVar h :: h' :: l) ->
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Format.fprintf fmt "%s: real, %a" h pp_decvarlist (tl, h' :: l)
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| _ -> raise (MyTypeError "This exception should not have beed be raised.")
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let rec pp_retvarlist fmt : t_varlist -> unit = function
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| ([], []) -> ()
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| ([TInt] , IVar h :: []) -> Format.fprintf fmt "int"
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| ([TReal], RVar h :: []) -> Format.fprintf fmt "float"
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| ([TBool], BVar h :: []) -> Format.fprintf fmt "bool"
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| (TInt :: tl, IVar h :: h' :: l) ->
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Format.fprintf fmt "int, %a" pp_retvarlist (tl, h' :: l)
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| (TBool :: tl, BVar h :: h' :: l) ->
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Format.fprintf fmt "float, %a" pp_retvarlist (tl, h' :: l)
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| (TReal :: tl, RVar h :: h' :: l) ->
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Format.fprintf fmt "bool, %a" pp_retvarlist (tl, h' :: l)
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| _ -> raise (MyTypeError "This exception should not have beed be raised.")
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let pp_expression =
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let upd_prefix s = s ^ " | " in
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let rec pp_expression_aux prefix fmt expression =
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let rec pp_expression_list prefix fmt exprs =
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match exprs with
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@ -41,103 +74,106 @@ let pp_expression =
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match expression with
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| EWhen (_, e1, e2) ->
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begin
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Format.fprintf fmt "\t\t\t%sWHEN\n%a\t\t\tWHEN\n%a"
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(* as don't use a variable assigned when the condition holds, can define it even if the condition doesn't hold *)
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Format.fprintf fmt "%s%a"
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prefix
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(pp_expression_aux (upd_prefix prefix)) e1
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(pp_expression_aux (upd_prefix prefix)) e2
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(pp_expression_aux prefix) e1
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end
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(* TODO: *)
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| EReset (_, e1, e2) ->
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begin
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Format.fprintf fmt "\t\t\t%sRESET\n%a\t\t\tRESET\n%a"
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prefix
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(pp_expression_aux (upd_prefix prefix)) e1
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(pp_expression_aux (upd_prefix prefix)) e2
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(pp_expression_aux prefix) e1
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(pp_expression_aux prefix) e2
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end
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| EConst (_, c) ->
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begin match c with
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| CBool true -> Format.fprintf fmt "\t\t\t%s<true : bool>\n" prefix
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| CBool false -> Format.fprintf fmt "\t\t\t%s<false : bool>\n" prefix
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| CInt i -> Format.fprintf fmt "\t\t\t%s<%5d: int>\n" prefix i
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| CReal r -> Format.fprintf fmt "\t\t\t%s<%5f: float>\n" prefix r
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| CBool b -> Format.fprintf fmt "%s%s" prefix (Bool.to_string b)
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| CInt i -> Format.fprintf fmt "%s%i" prefix i
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| CReal r -> Format.fprintf fmt "%s%f" prefix r
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end
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| EVar (_, IVar v) -> Format.fprintf fmt "\t\t\t%s<int var %s>\n" prefix v
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| EVar (_, BVar v) -> Format.fprintf fmt "\t\t\t%s<bool var %s>\n" prefix v
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| EVar (_, RVar v) -> Format.fprintf fmt "\t\t\t%s<real var %s>\n" prefix v
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| EVar (_, IVar v) -> Format.fprintf fmt "%s%s" prefix v
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| EVar (_, BVar v) -> Format.fprintf fmt "%s%s" prefix v
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| EVar (_, RVar v) -> Format.fprintf fmt "%s%s" prefix v
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| EMonOp (_, mop, arg) ->
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begin match mop with
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| MOp_not ->
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Format.fprintf fmt "\t\t\t%s ¬ \n%a" prefix
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(pp_expression_aux (upd_prefix prefix)) arg
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Format.fprintf fmt "!%s%a" prefix
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(pp_expression_aux prefix) arg
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| MOp_minus ->
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Format.fprintf fmt "\t\t\t%s — \n%a" prefix
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(pp_expression_aux (upd_prefix prefix)) arg
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Format.fprintf fmt "-%s%a" prefix
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(pp_expression_aux prefix) arg
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(* TODO *)
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| MOp_pre ->
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Format.fprintf fmt "\t\t\t%spre\n%a" prefix
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(pp_expression_aux (upd_prefix prefix)) arg
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Format.fprintf fmt "pre %s%a" prefix
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(pp_expression_aux prefix) arg
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end
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| EBinOp (_, bop, arg, arg') ->
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begin
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let s = match bop with
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| BOp_add -> " + " | BOp_sub -> " - "
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| BOp_mul -> " ∗ " | BOp_div -> " / " | BOp_mod -> "% "
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| BOp_mul -> " * " | BOp_div -> " / " | BOp_mod -> " % "
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(* TODO: -> *)
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| BOp_and -> " && " | BOp_or -> " || " | BOp_arrow -> " -> " in
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Format.fprintf fmt "\t\t\t%s%s\n%a%a" prefix s
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(pp_expression_aux (upd_prefix prefix)) arg
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(pp_expression_aux (upd_prefix prefix)) arg'
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Format.fprintf fmt "%s%a%s%a" prefix
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(pp_expression_aux prefix) arg
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s
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(pp_expression_aux prefix) arg'
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end
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| EComp (_, cop, arg, arg') ->
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begin
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let s = match cop with
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| COp_eq -> " == "
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| COp_neq -> " ≠ "
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| COp_le -> " ≤ " | COp_lt -> " < "
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| COp_ge -> " ≥ " | COp_gt -> " > " in
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Format.fprintf fmt "\t\t\t%s%s\n%a%a" prefix s
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(pp_expression_aux (upd_prefix prefix)) arg
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(pp_expression_aux (upd_prefix prefix)) arg'
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(* TODO: check <= and >= *)
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| COp_le -> " <= " | COp_lt -> " < "
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| COp_ge -> " >= " | COp_gt -> " > " in
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Format.fprintf fmt "%s%a%s%a" prefix
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(pp_expression_aux prefix) arg
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s
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(pp_expression_aux prefix) arg'
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end
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| ETriOp (_, top, arg, arg', arg'') ->
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begin match top with
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| TOp_if ->
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Format.fprintf fmt "\t\t\t%sIF\n%a\t\t\tTHEN\n%a\t\t\tELSE\n%a"
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| TOp_if | TOp_merge ->
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Format.fprintf fmt "%s%a ? %a : %a"
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prefix
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(pp_expression_aux (upd_prefix prefix)) arg
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(pp_expression_aux (upd_prefix prefix)) arg'
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(pp_expression_aux (upd_prefix prefix)) arg''
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| TOp_merge ->
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Format.fprintf fmt "\t\t\t%sMERGE ON CLK\n%a\t\t\tE1\n%a\t\t\tE2\n%a"
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prefix
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(pp_expression_aux (upd_prefix prefix)) arg
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(pp_expression_aux (upd_prefix prefix)) arg'
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(pp_expression_aux (upd_prefix prefix)) arg''
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(pp_expression_aux prefix) arg
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(pp_expression_aux prefix) arg'
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(pp_expression_aux prefix) arg''
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end
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(* TODO *)
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| EApp (_, f, args) ->
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Format.fprintf fmt "\t\t\t%sApp %s\n%a"
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Format.fprintf fmt "%s%s(%a)"
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prefix f.n_name
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(pp_expression_list prefix) args
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| ETuple _ ->
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Format.fprintf fmt "\t\t\t%sTuple\n%a" prefix
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Format.fprintf fmt "%s%a" prefix
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(pp_expression_list prefix) expression;
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in
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pp_expression_aux ""
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(* should add a prefix for indentation *)
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let rec pp_equations fmt: t_eqlist -> unit = function
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| [] -> ()
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| (patt, expr) :: eqs ->
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Format.fprintf fmt "\t\t∗ Equation of type : %a\n\t\t left side: %a\n\t\t right side:\n%a\n%a"
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debug_type_pp (Utils.type_exp expr)
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Format.fprintf fmt "%a = %a;\n%a"
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pp_varlist patt
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pp_expression expr
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pp_equations eqs
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(* TODO: manage general outputs *)
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let pp_node fmt node =
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Format.fprintf fmt "\t∗ Nom du nœud : %s\n\t Inputs:\n%a\n\t Outputs:\n%a\n\t\
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\ \ Local variables:\n%a\n\t Equations:\n%a\n"
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Format.fprintf fmt "%a %s(%a)\n{\n\t%a\n\t%a\n%a\n\treturn %a;\n}\n"
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pp_retvarlist (node.n_outputs)
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node.n_name
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pp_varlist node.n_inputs
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pp_varlist node.n_outputs
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pp_varlist node.n_local_vars
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(* could avoid newlines if they aren't used to seperate statements *)
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pp_argvarlist node.n_inputs
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pp_decvarlist node.n_local_vars
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pp_decvarlist node.n_outputs
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pp_equations node.n_equations
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pp_varlist node.n_outputs
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let rec pp_nodes fmt nodes =
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match nodes with
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@ -147,7 +183,7 @@ let rec pp_nodes fmt nodes =
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let ast_to_c fmt prog =
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Format.fprintf fmt
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"Le programme est composé de %d nœud(s), listés ci-dessous :\n%a"
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(List.length prog)
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(* could verify that uses a boolean in the ast before including `<stdbool.h>` *)
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"#include <stdbool.h>\n\n%a"
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pp_nodes prog
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