More equality functions

git-svn-id: svn+ssh://scm.gforge.inria.fr/svn/coq/trunk@15998 85f007b7-540e-0410-9357-904b9bb8a0f7

4 files changed, 18 insertions, 0 deletions

diff --git a/pretyping/classops.ml b/pretyping/classops.ml
index 2f47074060..d8cfde590d 100644
--- a/pretyping/classops.ml
+++ b/pretyping/classops.ml
@@ -53,6 +53,14 @@ let coe_info_typ_equal c1 c2 =
     c1.coe_is_identity == c2.coe_is_identity &&
     Int.equal c1.coe_param c2.coe_param
 
+let cl_typ_eq t1 t2 = match t1, t2 with
+| CL_SORT, CL_SORT -> true
+| CL_FUN, CL_FUN -> true
+| CL_SECVAR v1, CL_SECVAR v2 -> id_eq v1 v2
+| CL_CONST c1, CL_CONST c2 -> eq_constant c1 c2
+| CL_IND i1, CL_IND i2 -> eq_ind i1 i2
+| _ -> false
+
 type cl_index = int
 
 type coe_index = coe_info_typ
diff --git a/pretyping/classops.mli b/pretyping/classops.mli
index 1cbacdfa64..82af9d4180 100644
--- a/pretyping/classops.mli
+++ b/pretyping/classops.mli
@@ -22,6 +22,9 @@ type cl_typ =
   | CL_CONST of constant
   | CL_IND of inductive
 
+(** Equality over [cl_typ] *)
+val cl_typ_eq : cl_typ -> cl_typ -> bool
+
 val subst_cl_typ : substitution -> cl_typ -> cl_typ
 
 (** This is the type of infos for declared classes *)
diff --git a/pretyping/locusops.ml b/pretyping/locusops.ml
index 161243587c..22f154795b 100644
--- a/pretyping/locusops.ml
+++ b/pretyping/locusops.ml
@@ -40,6 +40,9 @@ let nowhere = { onhyps=Some[]; concl_occs=NoOccurrences }
 let onHyp h =
   { onhyps=Some[(AllOccurrences,h),InHyp]; concl_occs=NoOccurrences }
 
+let is_nowhere = function
+| { onhyps=Some[]; concl_occs=NoOccurrences } -> true
+| _ -> false
 
 (** Clause conversion functions, parametrized by a hyp enumeration function *)
 
diff --git a/pretyping/locusops.mli b/pretyping/locusops.mli
index 15ab0c94b3..bd4df6edd6 100644
--- a/pretyping/locusops.mli
+++ b/pretyping/locusops.mli
@@ -28,6 +28,10 @@ val onConcl : 'a clause_expr
 val nowhere : 'a clause_expr
 val onHyp : 'a -> 'a clause_expr
 
+(** Tests *)
+
+val is_nowhere : 'a clause_expr -> bool
+
 (** Clause conversion functions, parametrized by a hyp enumeration function *)
 
 val simple_clause_of : (unit -> identifier list) -> clause -> simple_clause