X-Git-Url: http://matita.cs.unibo.it/gitweb/?a=blobdiff_plain;f=helm%2Fsoftware%2Fcomponents%2Fgrafite_parser%2FgrafiteParser.ml;h=f3dd386a91540b15c729dbf22a0b4c7c25fcaf4a;hb=4db221ee87ba30f63db0ea32c98858041e8e6213;hp=14802a629e8cd32360a33c33d1550f506fc50b84;hpb=4609a07e2fe4343d94832fcaf0936223f83ba71c;p=helm.git

diff --git a/helm/software/components/grafite_parser/grafiteParser.ml b/helm/software/components/grafite_parser/grafiteParser.ml
index 14802a629..f3dd386a9 100644
--- a/helm/software/components/grafite_parser/grafiteParser.ml
+++ b/helm/software/components/grafite_parser/grafiteParser.ml
@@ -60,6 +60,10 @@ type by_continuation =
  | BYC_letsuchthat of string * CicNotationPt.term * string * CicNotationPt.term
  | BYC_wehaveand of string * CicNotationPt.term * string * CicNotationPt.term
 
+let out = ref ignore
+
+let set_callback f = out := f
+
 EXTEND
   GLOBAL: term statement;
   constructor: [ [ name = IDENT; SYMBOL ":"; typ = term -> (name, typ) ] ];
@@ -116,9 +120,15 @@ EXTEND
     | SYMBOL "<" -> `RightToLeft ]
   ];
   int: [ [ num = NUMBER -> int_of_string num ] ];
+  intros_names: [
+   [ idents = OPT ident_list0 ->
+      match idents with None -> [] | Some idents -> idents
+   ]
+  ];
   intros_spec: [
-    [ num = OPT [ num = int -> num ]; idents = OPT ident_list0 ->
-        let idents = match idents with None -> [] | Some idents -> idents in
+    [ OPT [ IDENT "names" ]; 
+      num = OPT [ num = int -> num ]; 
+      idents = intros_names ->
         num, idents
     ]
   ];
@@ -136,6 +146,9 @@ EXTEND
         GrafiteAst.Assumption loc
     | IDENT "auto"; params = auto_params ->
         GrafiteAst.Auto (loc,params)
+    | IDENT "cases"; what = tactic_term;
+      (num, idents) = intros_spec ->
+	GrafiteAst.Cases (loc, what, idents)
     | IDENT "clear"; ids = LIST1 IDENT ->
         GrafiteAst.Clear (loc, ids)
     | IDENT "clearbody"; id = IDENT ->
@@ -211,7 +224,8 @@ EXTEND
         GrafiteAst.Reflexivity loc
     | IDENT "replace"; p = pattern_spec; "with"; t = tactic_term ->
         GrafiteAst.Replace (loc, p, t)
-    | IDENT "rewrite" ; d = direction; t = tactic_term ; p = pattern_spec ->
+    | IDENT "rewrite" ; d = direction; t = tactic_term ; p = pattern_spec;
+       xnames = OPT [ "as"; n = ident_list0 -> n ] ->
        let (pt,_,_) = p in
         if pt <> None then
          raise
@@ -219,7 +233,8 @@ EXTEND
            (CicNotationParser.Parse_error
             "the pattern cannot specify the term to rewrite, only its paths in the hypotheses and in the conclusion")))
         else
-         GrafiteAst.Rewrite (loc, d, t, p)
+	 let n = match xnames with None -> [] | Some names -> names in 
+         GrafiteAst.Rewrite (loc, d, t, p, n)
     | IDENT "right" ->
         GrafiteAst.Right loc
     | IDENT "ring" ->
@@ -260,6 +275,8 @@ EXTEND
               | LSome t -> GrafiteAst.AndElim (loc, t, id1, t1, id2, t2)))
     | IDENT "we" ; IDENT "need" ; "to" ; IDENT "prove" ; t = tactic_term ; id = OPT [ LPAREN ; id = IDENT ; RPAREN -> id ] ; t1 = OPT [IDENT "or" ; IDENT "equivalently"; t' = tactic_term -> t']->
         GrafiteAst.We_need_to_prove (loc, t, id, t1)
+    | IDENT "we" ; IDENT "proceed" ; IDENT "by" ; IDENT "cases" ; "on" ; t=tactic_term ; "to" ; IDENT "prove" ; t1=tactic_term ->  
+        GrafiteAst.We_proceed_by_cases_on (loc, t, t1)
     | IDENT "we" ; IDENT "proceed" ; IDENT "by" ; IDENT "induction" ; "on" ; t=tactic_term ; "to" ; IDENT "prove" ; t1=tactic_term ->  
         GrafiteAst.We_proceed_by_induction_on (loc, t, t1)
     | IDENT "by" ; IDENT "induction" ; IDENT "hypothesis" ; IDENT "we" ; IDENT "know" ; t=tactic_term ; LPAREN ; id = IDENT ; RPAREN ->
@@ -413,11 +430,11 @@ EXTEND
     [ [ IDENT "check"   ]; t = term ->
         GrafiteAst.Check (loc, t)
     | [ IDENT "inline"]; 
-        style = OPT [ IDENT "procedural" ];
+        style = OPT [ IDENT "procedural"; depth = OPT int -> depth ];
 	suri = QSTRING; prefix = OPT QSTRING ->
          let style = match style with 
-	    | None   -> GrafiteAst.Declarative
-	    | Some _ -> GrafiteAst.Procedural
+	    | None       -> GrafiteAst.Declarative
+	    | Some depth -> GrafiteAst.Procedural depth
 	 in
 	 let prefix = match prefix with None -> "" | Some prefix -> prefix in
 	 GrafiteAst.Inline (loc,style,suri,prefix)
@@ -561,6 +578,11 @@ EXTEND
         GrafiteAst.Obj (loc, Ast.Theorem (`Axiom, name, typ, None))
     | "let"; ind_kind = [ "corec" -> `CoInductive | "rec"-> `Inductive ];
         defs = CicNotationParser.let_defs -> 
+         (* In case of mutual definitions here we produce just
+            the syntax tree for the first one. The others will be
+            generated from the completely specified term just before
+            insertion in the environment. We use the flavour
+            `MutualDefinition to rememer this. *)
           let name,ty = 
             match defs with
             | (params,(Ast.Ident (name, None), Some ty),_,_) :: _ ->
@@ -575,8 +597,14 @@ EXTEND
             | _ -> assert false 
           in
           let body = Ast.Ident (name,None) in
-          GrafiteAst.Obj (loc, Ast.Theorem(`Definition, name, ty,
-            Some (Ast.LetRec (ind_kind, defs, body))))
+          let flavour =
+           if List.length defs = 1 then
+            `Definition
+           else
+            `MutualDefinition
+          in
+           GrafiteAst.Obj (loc, Ast.Theorem(flavour, name, ty,
+             Some (Ast.LetRec (ind_kind, defs, body))))
     | IDENT "inductive"; spec = inductive_spec ->
         let (params, ind_types) = spec in
         GrafiteAst.Obj (loc, Ast.Inductive (params, ind_types))
@@ -650,7 +678,8 @@ EXTEND
             (loc,GrafiteAst.Include (iloc,buri))))
     | scom = lexicon_command ; SYMBOL "." ->
        fun ~include_paths status ->
-        let status = LexiconEngine.eval_command status scom in
+        !out scom;
+	let status = LexiconEngine.eval_command status scom in
          status,LNone loc
     | EOI -> raise End_of_file
     ]