X-Git-Url: http://matita.cs.unibo.it/gitweb/?a=blobdiff_plain;f=helm%2Focaml%2Ftactics%2FproofEngineHelpers.mli;h=e28e1425d8fd69270ba896bcf1c703a1cc2f0b58;hb=4167cea65ca58897d1a3dbb81ff95de5074700cc;hp=c2f8c640aeded79e7e84ded52ea869e910b1f788;hpb=f85e6f52232af229b80a8447492cfae80f95d832;p=helm.git

diff --git a/helm/ocaml/tactics/proofEngineHelpers.mli b/helm/ocaml/tactics/proofEngineHelpers.mli
index c2f8c640a..e28e1425d 100644
--- a/helm/ocaml/tactics/proofEngineHelpers.mli
+++ b/helm/ocaml/tactics/proofEngineHelpers.mli
@@ -23,7 +23,7 @@
  * http://cs.unibo.it/helm/.
  *)
 
-exception Bad_pattern of string
+exception Bad_pattern of string Lazy.t
 
 (* Returns the first meta whose number is above the *)
 (* number of the higher meta.                       *)
@@ -48,23 +48,71 @@ val compare_metasenvs :
  * A pattern is a Cic term in which Cic.Implicit terms annotated with `Hole
  * appears *)
 
-(** create a pattern from a term and a list of subterm.
+(** create a pattern from a term and a list of subterms.
+* the pattern is granted to have a ? for every subterm that has no selected
+* subterms
 * @param equality equality function used while walking the term. Defaults to
 * physical equality (==) *)
 val pattern_of:
-  ?equality:(Cic.term -> Cic.term -> bool) -> term:Cic.term -> Cic.term list ->
-    Cic.term
+ ?equality:(Cic.term -> Cic.term -> bool) -> term:Cic.term -> Cic.term list ->
+   Cic.term
 
-(** select all subterms of a given term matching a given pattern (i.e. subtrees
-* rooted at pattern's holes. The first component is the context the term lives
-* in). raise Bad_pattern (pattern_entry, term_entry) *)
-val select: term:Cic.term -> pattern:Cic.term -> (Cic.context * Cic.term) list
 
-  
-(** Finds the _pointers_ to subterms that are alpha-equivalent to wanted in t.
- * wanted is properly lifted when binders are crossed *)
-val find_subterms : 
-  eq:(Cic.term -> Cic.term -> bool) ->
-  wanted:Cic.term -> Cic.term -> 
-    Cic.term list
+(** select metasenv conjecture pattern
+* select all subterms of [conjecture] matching [pattern].
+* It returns the set of matched terms (that can be compared using physical
+* equality to the subterms of [conjecture]) together with their contexts.
+* The representation of the set mimics the conjecture type (but for the id):
+* a list of (possibly removed) hypothesis (without their names) together with
+* the list of its matched subterms (and their contexts) + the list of matched
+* subterms of the conclusion with their context. Note: in the result the list
+* of hypotheses * has an entry for each entry in the context and in the same
+* order. Of course the list of terms (with their context) associated to one
+* hypothesis may be empty. 
+*
+* @raise Bad_pattern
+* *)
+val select:
+ metasenv:Cic.metasenv ->
+ ugraph:CicUniv.universe_graph ->
+ conjecture:Cic.conjecture ->
+ pattern:ProofEngineTypes.pattern ->
+  Cic.substitution * Cic.metasenv * CicUniv.universe_graph *
+  [ `Decl of (Cic.context * Cic.term) list
+  | `Def of (Cic.context * Cic.term) list * (Cic.context * Cic.term) list option
+  ] option list *
+  (Cic.context * Cic.term) list
+
+(** locate_in_term equality what where context
+* [what] must match a subterm of [where] according to [equality]
+* It returns the matched terms together with their contexts in [where]
+* [equality] defaults to physical equality
+* [context] must be the context of [where]
+*)
+val locate_in_term:
+ ?equality:(Cic.context -> Cic.term -> Cic.term -> bool) ->
+  Cic.term -> where:Cic.term -> Cic.context -> (Cic.context * Cic.term) list
+
+(** locate_in_conjecture equality what where context
+* [what] must match a subterm of [where] according to [equality]
+* It returns the matched terms together with their contexts in [where]
+* [equality] defaults to physical equality
+* [context] must be the context of [where]
+*)
+val locate_in_conjecture:
+ ?equality:(Cic.context -> Cic.term -> Cic.term -> bool) ->
+  Cic.term -> Cic.conjecture -> (Cic.context * Cic.term) list
+
+(* saturate_term newmeta metasenv context ty goal_arity                       *)
+(* Given a type [ty] (a backbone), it returns its suffix of length            *)
+(* [goal_arity] head and a new metasenv in which there is new a META for each *)
+(* hypothesis, a list of arguments for the new applications and the index of  *)
+(* the last new META introduced. The nth argument in the list of arguments is *)
+(* just the nth new META.                                                     *)
+val saturate_term:
+ int -> Cic.metasenv -> Cic.context -> Cic.term -> int ->
+  Cic.term * Cic.metasenv * Cic.term list * int
+
+(* returns the index and the type of a premise in a context *)
+val lookup_type: Cic.metasenv -> Cic.context -> string -> int * Cic.term