-let text_of_query x =
- let module M = MathQL in
- let txt_svar sv = "%" ^ sv in
- let txt_rvar rv = "@" ^ rv in
- let txt_vvar vv = "$" ^ vv in
- let txt_inv i = if i then "inverse " else "" in
- let txt_ref = function
- | M.RefineExact -> ""
- | M.RefineSub -> "sub "
- | M.RefineSuper -> "super "
- in
- let txt_refpath i r p = txt_inv i ^ txt_ref r ^ txt_path p ^ " " in
- let rec txt_val = function
- | M.Const [s] -> txt_str s
- | M.Const l -> "{" ^ txt_list txt_str ", " l ^ "}"
- | M.VVar vv -> txt_vvar vv
- | M.Record (rv, p) -> txt_rvar rv ^ "." ^ txt_path p
- | M.Fun (s, x) -> "fun " ^ txt_str s ^ " " ^ txt_val x
- | M.Attribute (i, r, p, x) -> "attribute " ^ txt_refpath i r p ^ txt_val x
- | M.RefOf x -> "refof " ^ txt_set x
- and txt_boole = function
- | M.False -> "false"
- | M.True -> "true"
- | M.Ex b x -> "ex " ^ txt_boole x
-(* | M.Ex b x -> "ex [" ^ txt_list txt_rvar "," b ^ "] " ^ txt_boole x
-*) | M.Not x -> "not " ^ txt_boole x
- | M.And (x, y) -> "(" ^ txt_boole x ^ " and " ^ txt_boole y ^ ")"
- | M.Or (x, y) -> "(" ^ txt_boole x ^ " or " ^ txt_boole y ^ ")"
- | M.Sub (x, y) -> "(" ^ txt_val x ^ " sub " ^ txt_val y ^ ")"
- | M.Meet (x, y) -> "(" ^ txt_val x ^ " meet " ^ txt_val y ^ ")"
- | M.Eq (x, y) -> "(" ^ txt_val x ^ " eq " ^ txt_val y ^ ")"
- and txt_set = function
- | M.SVar sv -> txt_svar sv
- | M.RVar rv -> txt_rvar rv
- | M.Relation (i, r, p, x, []) -> "relation " ^ txt_refpath i r p ^ txt_set x
- | M.Relation (i, r, p, x, l) -> "relation " ^ txt_refpath i r p ^ txt_set x ^ " attr " ^ txt_list txt_str ", " l
- | M.Union (x, y) -> "(" ^ txt_set x ^ " union " ^ txt_set y ^ ")"
- | M.Intersect (x, y) -> "(" ^ txt_set x ^ " intersect " ^ txt_set y ^ ")"
- | M.Diff (x, y) -> "(" ^ txt_set x ^ " diff " ^ txt_set y ^ ")"
- | M.LetSVar (sv, x, y) -> "let " ^ txt_svar sv ^ " be " ^ txt_set x ^ " in " ^ txt_set y
- | M.LetVVar (vv, x, y) -> "let " ^ txt_vvar vv ^ " be " ^ txt_val x ^ " in " ^ txt_set y
- | M.Select (rv, x, y) -> "select " ^ txt_rvar rv ^ " in " ^ txt_set x ^ " where " ^ txt_boole y
- | M.Pattern x -> "pattern " ^ txt_val x
- | M.Ref x -> "ref " ^ txt_val x
- in
- txt_set x