From 45ced1c1af3dbe7f81c8b928aeb76ebadfe709ea Mon Sep 17 00:00:00 2001
From: Hugo Herbelin
Date: Mon, 10 Feb 2020 17:27:21 +0100
Subject: Reorganize type "production_level" along a more intuitive structure.

NextLevel    = at next level
NumLevel n   = at level n
DefaultLevel = <no mention of level>
---
 parsing/extend.ml | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

(limited to 'parsing/extend.ml')

diff --git a/parsing/extend.ml b/parsing/extend.ml
index dcdaa25c33..848861238a 100644
--- a/parsing/extend.ml
+++ b/parsing/extend.ml
@@ -21,6 +21,7 @@ type production_position =
 type production_level =
   | NextLevel
   | NumLevel of int
+  | DefaultLevel (** Interpreted differently at the border or inside a rule *)
 
 (** User-level types used to tell how to parse or interpret of the non-terminal *)
 
@@ -40,7 +41,7 @@ type constr_entry_key =
 (** Entries used in productions, vernac side (e.g. "x bigint" or "x ident") *)
 
 type simple_constr_prod_entry_key =
-    production_level option constr_entry_key_gen
+    production_level constr_entry_key_gen
 
 (** Entries used in productions (in right-hand-side of grammar rules), to parse non-terminals *)
 
-- 
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