From e281113f887c39b4aa86a794f73b074ef5655319 Mon Sep 17 00:00:00 2001
From: Ferruccio Guidi <ferruccio.guidi@unibo.it>
Date: Mon, 16 Sep 2002 13:09:08 +0000
Subject: [PATCH] parser and pretty printer corrected and tested

---
 helm/ocaml/mathql/mQueryTParser.mly |  4 +++-
 helm/ocaml/mathql/mQueryUtil.ml     | 12 ++++++------
 helm/ocaml/mathql/mathQL.ml         |  2 +-
 3 files changed, 10 insertions(+), 8 deletions(-)

diff --git a/helm/ocaml/mathql/mQueryTParser.mly b/helm/ocaml/mathql/mQueryTParser.mly
index 7bb6be3c4..a90c90e71 100644
--- a/helm/ocaml/mathql/mQueryTParser.mly
+++ b/helm/ocaml/mathql/mQueryTParser.mly
@@ -42,7 +42,9 @@
    %left     DIFF WHERE REFOF  
    %left     OR UNION
    %left     AND INTER
-   %nonassoc NOT EX IN STR ATTR
+   %nonassoc STR
+   %nonassoc NOT EX IN ATTR
+
    %start    qstr query result
    %type     <string>        qstr      
    %type     <MathQL.query>  query
diff --git a/helm/ocaml/mathql/mQueryUtil.ml b/helm/ocaml/mathql/mQueryUtil.ml
index dc6b6997f..73006b606 100644
--- a/helm/ocaml/mathql/mQueryUtil.ml
+++ b/helm/ocaml/mathql/mQueryUtil.ml
@@ -54,11 +54,11 @@ let text_of_query x =
       | M.SuperOp -> "super "
    in
    let txt_vvar_list l =
-      txt_list txt_vvar "," l
+      txt_list txt_vvar ", " l
    in
    let rec txt_val = function
       | M.Const [s]           -> txt_qstr s
-      | M.Const l             -> "{" ^ txt_list txt_qstr "," l ^ "}"
+      | M.Const l             -> "{" ^ txt_list txt_qstr ", " l ^ "}"
       | M.VVar vv             -> txt_vvar vv
       | M.Record (rv, vv)     -> txt_rvar rv ^ "." ^ txt_vvar vv
       | M.Fun (s, x)          -> "fun " ^ txt_qstr s ^ " " ^ txt_val x
@@ -93,14 +93,14 @@ let text_of_query x =
 let text_of_result x sep =
    let txt_attr = function
       | (s, []) -> txt_qstr s
-      | (s, l)  -> txt_qstr s ^ "=" ^ txt_list txt_qstr "," l
+      | (s, l)  -> txt_qstr s ^ "=" ^ txt_list txt_qstr ", " l
    in
-   let txt_group l = "{" ^ txt_list txt_attr ";" l ^ "}" in
+   let txt_group l = "{" ^ txt_list txt_attr "; " l ^ "}" in
    let txt_res = function
       | (s, []) -> txt_qstr s 
-      | (s, l)  -> txt_qstr s ^ " attr " ^ txt_list txt_group "," l
+      | (s, l)  -> txt_qstr s ^ " attr " ^ txt_list txt_group ", " l
    in   
-   let txt_set l = txt_list txt_res (";" ^ sep) l in
+   let txt_set l = txt_list txt_res ("; " ^ sep) l in
    txt_set x
 
 let query_of_text lexbuf =
diff --git a/helm/ocaml/mathql/mathQL.ml b/helm/ocaml/mathql/mathQL.ml
index 5ccdf79d7..b424d110b 100644
--- a/helm/ocaml/mathql/mathQL.ml
+++ b/helm/ocaml/mathql/mathQL.ml
@@ -74,7 +74,7 @@ and boole_exp = False
 and val_exp = Const of string list 
             | RefOf of set_exp 
 	    | Record of rvar * vvar
-	    | VVar of string
+	    | VVar of vvar
 	    | Fun of string * val_exp
 	    | Attribute of refine_op * string * val_exp
 
-- 
2.39.2