short notation for "coercion"

[helm.git] / matita / components / grafite_parser / grafiteParser.ml

diff --git a/matita/components/grafite_parser/grafiteParser.ml b/matita/components/grafite_parser/grafiteParser.ml
index 5f1b212bc160ed8b1ea034e725d5bf8e12167e32..c1b059991db9e8b21093f531b2413ff4c802841a 100644 (file)
--- a/matita/components/grafite_parser/grafiteParser.ml
+++ b/matita/components/grafite_parser/grafiteParser.ml
@@ -545,12 +545,12 @@ EXTEND
         G.UnificationHint (loc, t, n)
     | IDENT "coercion"; name = IDENT;
         compose = OPT [ IDENT "nocomposites" -> () ];
-        SYMBOL ":"; ty = term; 
+        spec = OPT [ SYMBOL ":"; ty = term; 
         SYMBOL <:unicode<def>>; t = term; "on"; 
         id = [ IDENT | PIDENT ]; SYMBOL ":"; source = term;
-        "to"; target = term ->
+        "to"; target = term -> t,ty,(id,source),target ] ->
           let compose = compose = None in
-          G.NCoercion(loc,name,compose,t,ty,(id,source),target)     
+          G.NCoercion(loc,name,compose,spec)
     | IDENT "record" ; (params,name,ty,fields) = record_spec ->
         G.NObj (loc, N.Record (params,name,ty,fields))
     | IDENT "copy" ; s = IDENT; IDENT "from"; u = URI; "with";