1 .Tactic generalize ported to patterns and activated in matita.

[helm.git] / helm / ocaml / cic_disambiguation / cicTextualParser2.ml

diff --git a/helm/ocaml/cic_disambiguation/cicTextualParser2.ml b/helm/ocaml/cic_disambiguation/cicTextualParser2.ml
index b223eb3fd6eb199bd7818ddf3436e34072c4c7f6..086c307873bd1fc87aaa8c09d6910ac640d5d5bb 100644 (file)
--- a/helm/ocaml/cic_disambiguation/cicTextualParser2.ml
+++ b/helm/ocaml/cic_disambiguation/cicTextualParser2.ml
@@ -328,6 +328,23 @@ EXTEND
     | [ IDENT "whd" ] -> `Whd 
     | [ IDENT "normalize" ] -> `Normalize ]
   ];
+  pattern_spec: [
+    [ "in";
+      hyp_paths =
+       LIST0
+        [ id = IDENT ;
+          path = OPT [SYMBOL ":" ; path = term -> path ] ->
+          (id,match path with Some p -> p | None -> CicAst.UserInput) ]
+        SEP SYMBOL ";";
+      goal_path = OPT [ SYMBOL <:unicode<vdash>>; term = term -> term ] ->
+        (hyp_paths, goal_path) ]
+  ];
+  direction: [
+    [ IDENT "left" -> `Left
+    | SYMBOL ">" -> `Left
+    | IDENT "right" -> `Right
+    | SYMBOL "<" -> `Right ]
+  ];
   tactic: [
     [ [ IDENT "absurd" ]; t = tactic_term ->
         TacticAst.Absurd (loc, t)
@@ -383,28 +400,21 @@ EXTEND
        where = IDENT ; SYMBOL <:unicode<def>> ; t = tactic_term ->
         TacticAst.LetIn (loc, t, where)
     | kind = reduction_kind;
-      pat = OPT [
-        "in"; pat = [ IDENT "goal" -> `Goal | IDENT "hyp" -> `Everywhere ] ->
-          pat
-      ];
-      terms = LIST0 term SEP SYMBOL "," ->
-        (match (pat, terms) with
-        | None, [] -> TacticAst.Reduce (loc, kind, None)
-        | None, terms -> TacticAst.Reduce (loc, kind, Some (terms, `Goal))
-        | Some pat, [] -> fail loc "Missing term [list]"
-        | Some pat, terms -> TacticAst.Reduce (loc, kind, Some (terms, pat)))
-    | kind = reduction_kind; where = IDENT ; IDENT "at" ; pat = term ->
-        TacticAst.ReduceAt (loc, kind, where, pat)
+      p = OPT [ pattern_spec ] ->
+        let p = match p with None -> [], None | Some p -> p in
+        TacticAst.Reduce (loc, kind, p)
+    | IDENT "generalize"; t = tactic_term; p = OPT [ pattern_spec ] ->
+       let p = match p with None -> [], None | Some p -> p in
+       TacticAst.Generalize (loc,t,p)
     | [ IDENT "reflexivity" ] ->
         TacticAst.Reflexivity loc
     | [ IDENT "replace" ];
       t1 = tactic_term; "with"; t2 = tactic_term ->
         TacticAst.Replace (loc, t1, t2)
-    | [ IDENT "rewrite" ; IDENT "left" ] ; t = term ->
-        TacticAst.Rewrite (loc,`Left, t, None)
-    | [ IDENT "rewrite" ; IDENT "right" ] ; t = term ->
-        TacticAst.Rewrite (loc,`Right, t, None)
-    (* TODO Replace_pattern *)
+    | IDENT "rewrite" ; d = direction; t = term ;
+      p = OPT [ pattern_spec ] ->
+        let p = match p with None -> [], None | Some p -> p in
+        TacticAst.Rewrite (loc, d, t, p)
     | [ IDENT "right" ] -> TacticAst.Right loc
     | [ IDENT "ring" ] -> TacticAst.Ring loc
     | [ IDENT "split" ] -> TacticAst.Split loc