finish splitting modules, and start using ninja
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252
sexpr_macro.ml
Normal file
252
sexpr_macro.ml
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let test = Testing.test
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exception Misformated_Macro of Sexpr.t
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exception Macro_Doesnt_App
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exception Not_Valid_Macro_Arg_Syntax
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exception FIXME of Sexpr.t
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let num_expands = ref 0;;
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let assoc_all k li =
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li
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|> List.find_all (fun (x, _) -> x = k)
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|> List.map (fun (_, v) -> v)
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let () = test "SexprMacroExp.assoc_all" @@ begin fun () ->
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let li = [
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"asye","v4";
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"key","v1";
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"notkey","v2";
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"key","v3"
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] in
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assert (assoc_all "key" li = ["v1";"v3"])
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end
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let rec eval (ctx: (string * (Sexpr.t * Sexpr.t)) list) s =
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let open Sexpr in
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let aggr_eval ctx s = begin
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let s, (ch,ctx) = aggr_flat_map (fun aggr s ->
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let ch1, ctx = aggr in
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let s, ch2, ctx = eval ctx s in
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s, ((ch1 || ch2), ctx)
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) (false, ctx) s in
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s, ch, ctx
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end in
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let s, ch1, ctx = match s with
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Cons(Id ":macro", Cons(name, Cons(margs, rr))) ->
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let rr, ch, ctx = aggr_eval ctx rr in
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Cons(Id ":macro", Cons(name, Cons(margs, rr))), ch, ctx
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| s when is_list s -> begin
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aggr_eval ctx s
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end
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| _ ->
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s, false, ctx
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in
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let s, ch2, ctx = check_expands ctx s in
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s, (ch1 || ch2), ctx
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(* expr -> list(new exprs) * bool:changed * ctx *)
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and check_expands ctx s =
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let open Sexpr in
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match s with
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Cons(Id ":macro", r) -> begin
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let a = match r with
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Cons(Id(l), Cons(a,b)) -> l, (a,b)
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| _ -> raise @@ Misformated_Macro s
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in
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let ctx = (a :: ctx)
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|> List.sort (fun a b -> macro_req_score (fst (snd b)) - macro_req_score (fst (snd a)))
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in
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Nil, false, ctx
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end
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| Cons(Id ":atm-to-str", Cons(Id x, Nil))
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| Cons(Id ":atm-to-str", Cons(Str x, Nil)) ->
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li1 (Str x), true, ctx
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| Cons(Id ":atm-to-str", Cons(Int x, Nil)) ->
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li1 (Str (Int.to_string x)), true, ctx
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| Cons(Id ":atm-to-str", Cons(Flt x, Nil)) ->
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li1 (Str (Float.to_string x)), true, ctx
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| Cons(Id ":str-cat", Cons(Str l, Cons(Str r, Nil))) ->
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li1 (Str (l ^ r)), true, ctx
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| Cons(Id ":unpack", Cons(x, Nil)) when is_list x ->
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x, true, ctx
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| Cons(Id ":c-eq", Cons(l, Cons(r, Nil))) when l = r ->
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Nil, true, ctx
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| Cons(Id ":c-li0-eq", Cons( Cons(l, _) , Cons( r , Nil))) when l = r ->
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Nil, true, ctx
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| Cons(Id ":c-int", Cons(Int _, Nil)) ->
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Nil, true, ctx
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| Cons(Id ":c-float", Cons(Flt _, Nil)) ->
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Nil, true, ctx
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| Cons(Id ":c-num", Cons(Int _, Nil))
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| Cons(Id ":c-num", Cons(Flt _, Nil)) ->
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Nil, true, ctx
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| Cons(Id ":c-str", Cons(Str _, Nil)) ->
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Nil, true, ctx
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| Cons(Id ":c-id", Cons(Id _, Nil)) ->
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Nil, true, ctx
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| Cons(Id ":c-colon-id", Cons(Id x, Nil)) when String.contains x ':' ->
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Nil, true, ctx
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| Cons(Id ":c-list", Cons(x, Nil)) when is_list x ->
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Nil, true, ctx
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| Cons(Id ":c-atm", Cons(Int _, Nil))
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| Cons(Id ":c-atm", Cons(Flt _, Nil))
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| Cons(Id ":c-atm", Cons(Str _, Nil))
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| Cons(Id ":c-atm", Cons(Id _, Nil)) ->
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Nil, true, ctx
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| Cons(Id i, r) when String.starts_with ~prefix:":" i ->
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let i = String.sub i 1 ((String.length i) - 1) in
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check_expands_macro i ctx r s
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| Cons(_) ->
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check_expands_macro "@" ctx s s
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| s -> li1 s, false, ctx
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and check_expands_macro i ctx r s =
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let open Sexpr in
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let rec test opt ctx =
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begin match opt with
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[] -> li1 s, false, ctx
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| hd :: tl ->
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try
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let o = expand_macro r hd ctx, true, ctx in
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(* Format.printf "expanded: %s, with: %a\n%!" i Sexpr.pp_t r; *)
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o
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with Macro_Doesnt_App ->
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test tl ctx
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end
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in
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test (assoc_all i ctx) ctx
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and match_macro_arg args margs ctx =
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let open Sexpr in
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match args, margs with
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Nil, Nil -> []
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| Cons(_), Cons(Id(".."), Cons(Id(rem),Nil)) -> [rem, args]
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| Cons(v,rl), Cons(Id(k), rr) -> [k,li1 v] @ match_macro_arg rl rr ctx
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| Cons(v,rl), Cons(Cons(Id k, Cons(cst, Nil)), rr) ->
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let cst_exp = expand_macro_eval cst ["_", li1 v] in
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let cst_exp, _ = eval_while ctx cst_exp in
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if cst_exp <> Nil then
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raise Macro_Doesnt_App;
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[k, li1 v] @ match_macro_arg rl rr ctx
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| _ -> raise Macro_Doesnt_App
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and macro_req_score args =
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let open Sexpr in
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match args with
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Nil -> 0
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| Cons(Id(".."), Cons(Id(rem),Nil)) -> 1
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| Cons(Id _, rr) -> 100 + macro_req_score rr
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| Cons(Cons(Id _, Cons(_,Nil)), rr) -> 110 + macro_req_score rr
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| _ -> raise Not_Valid_Macro_Arg_Syntax
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and expand_macro_eval expr defs =
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let open Sexpr in
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let perfm expr =
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begin match expr with
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Id(i) when String.starts_with ~prefix:"'" i ->
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li1 @@ Id(String.sub i 1 (String.length i - 1))
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| Id(i) -> begin match List.assoc_opt i defs with
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Some x -> x
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| None -> li1 expr
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end
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| x when is_list x -> li1 (expand_macro_eval x defs)
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| x -> li1 x
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end
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in
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if is_list expr then
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flat_map perfm expr
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else
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perfm expr
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and expand_macro args macro ctx =
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let margs, mbody = macro in
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let defs = match_macro_arg args margs ctx in
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num_expands := !num_expands + 1;
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expand_macro_eval mbody defs
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and eval_while ctx s = begin
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let s, ch, ctx = eval ctx s in
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if ch then
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Sexpr.aggr_flat_map eval_while ctx s
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else
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s, ctx
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end
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and eval_root_while ctx s = begin
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let s, ch, ctx = eval ctx s in
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if ch then begin
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(* Format.printf "%a\n%!" Sexpr.pp_t s; *)
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Sexpr.aggr_flat_map eval_root_while ctx s
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end else
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s, ctx
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end
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let do_eval s =
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eval_root_while [] s |> fst
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let sparse src =
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Pc.doparse
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Format.err_formatter
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{ source = src; path = "top" }
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(Sexpr.parse_top ())
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|> Option.get
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let () = test "SexprMacroExp.do_eval.unchanged_num" @@ begin fun () ->
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let open Sexpr in
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let a = Int 1 in
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assert (do_eval a = li1 a)
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end
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let () = test "SexprMacroExp.do_eval.unchanged_list" ~depends:["SexprMacroExp.do_eval.unchanged_num"] @@ begin fun () ->
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let open Sexpr in
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let a = Cons(Int 1, Cons(Int 2, Nil)) in
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assert (do_eval a = li1 a)
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end
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let () = test "SexprMacroExp.do_eval.unchanged_nested_list" ~depends:["SexprMacroExp.do_eval.unchanged_list"] @@ begin fun () ->
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let open Sexpr in
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let a = Cons(Int 1, Cons( Cons(Int 10, Cons(Int 20, Nil)), Cons(Int 3, Nil))) in
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assert (do_eval a = li1 a)
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end
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let () = test "SexprMacroExp.do_eval.macro_no_body" ~depends:Sexpr.parser_tests @@ begin fun () ->
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let open Sexpr in
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let a = "(:macro one()) (:one)"
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and p = "()" in
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assert (do_eval (sparse a) = sparse p)
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end
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let () = test "SexprMacroExp.do_eval.macro_body" ~depends:Sexpr.parser_tests @@ begin fun () ->
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let open Sexpr in
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let a = "(:macro a() 1 2) (:a)"
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and p = "(1 2)" in
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assert (do_eval (sparse a) = sparse p)
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end
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let () = test "SexprMacroExp.do_eval.macro_arg" ~depends:Sexpr.parser_tests @@ begin fun () ->
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let open Sexpr in
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let a = "(:macro a(arg) 1 arg) (:a 2)"
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and p = "(1 2)" in
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assert (do_eval (sparse a) = sparse p)
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end
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let () = test "SexprMacroExp.do_eval.macro_args" ~depends:Sexpr.parser_tests @@ begin fun () ->
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let open Sexpr in
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let a = "(:macro a(arg arg2) arg2 1 arg) (:a 2 0)"
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and p = "(0 1 2)" in
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assert (do_eval (sparse a) = sparse p)
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end
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let () = test "SexprMacroExp.do_eval.macro_varargs" ~depends:Sexpr.parser_tests @@ begin fun () ->
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let open Sexpr in
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let a = "(:macro a(arg .. rem) arg 1 rem) (:a 0 2 3)"
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and p = "(0 1 2 3)" in
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assert (do_eval (sparse a) = sparse p)
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end
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let () = test "SexprMacroExp.do_eval.macro_varargs_notmatch_none" ~depends:Sexpr.parser_tests @@ begin fun () ->
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let open Sexpr in
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let a = "(:macro a(arg .. rem) arg 1 rem) (:a 0)"
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and p = "((:a 0))" in
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assert (do_eval (sparse a) = sparse p)
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end
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let () = test "SexprMacroExp.do_eval.macro_body_paren" ~depends:Sexpr.parser_tests @@ begin fun () ->
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let open Sexpr in
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let a = "(:macro a() (1)) (:a)"
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and p = "((1))" in
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assert (do_eval (sparse a) = sparse p)
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end
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