From 5968648f9e9db09de462dd8c3530febd66466312 Mon Sep 17 00:00:00 2001 From: Jasper Hugunin Date: Sat, 17 Feb 2018 07:35:57 -0800 Subject: Implement name mangling option --- engine/namegen.ml | 37 +++++++++++++++++++++++++++++++++++++ 1 file changed, 37 insertions(+) (limited to 'engine/namegen.ml') diff --git a/engine/namegen.ml b/engine/namegen.ml index ff0b5a74e..c8cc78f17 100644 --- a/engine/namegen.ml +++ b/engine/namegen.ml @@ -190,9 +190,45 @@ let it_mkLambda_or_LetIn_name env sigma b hyps = (**********************************************************************) (* Fresh names *) +(* Introduce a mode where auto-generated names are mangled + to test dependence of scripts on auto-generated names *) + +let mangle_names = ref false + +let _ = Goptions.( + declare_bool_option + { optdepr = false; + optname = "mangle auto-generated names"; + optkey = ["Mangle";"Names"]; + optread = (fun () -> !mangle_names); + optwrite = (:=) mangle_names; }) + +let mangle_names_prefix = ref (Id.of_string "_0") +let set_prefix x = mangle_names_prefix := forget_subscript x + +let set_mangle_names_mode x = begin + set_prefix x; + mangle_names := true + end + +let _ = Goptions.( + declare_string_option + { optdepr = false; + optname = "mangled names prefix"; + optkey = ["Mangle";"Names";"Prefix"]; + optread = (fun () -> Id.to_string !mangle_names_prefix); + optwrite = begin fun x -> + set_prefix + (try Id.of_string x + with CErrors.UserError _ -> CErrors.user_err Pp.(str ("Not a valid identifier: \"" ^ x ^ "\"."))) + end }) + +let mangle_id id = if !mangle_names then !mangle_names_prefix else id + (* Looks for next "good" name by lifting subscript *) let next_ident_away_from id bad = + let id = mangle_id id in let rec name_rec id = if bad id then name_rec (increment_subscript id) else id in name_rec id @@ -291,6 +327,7 @@ let next_global_ident_away id avoid = looks for same name with lower available subscript *) let next_ident_away id avoid = + let id = mangle_id id in if Id.Set.mem id avoid then next_ident_away_from (restart_subscript id) (fun id -> Id.Set.mem id avoid) else id -- cgit v1.2.3