38 lines
1.5 KiB
OCaml
38 lines
1.5 KiB
OCaml
(****************************************************************************)
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(* *)
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(* OCaml *)
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(* *)
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(* INRIA Rocquencourt *)
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(* *)
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(* Copyright 2006 Institut National de Recherche en Informatique et *)
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(* en Automatique. All rights reserved. This file is distributed under *)
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(* the terms of the GNU Library General Public License, with the special *)
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(* exception on linking described in LICENSE at the top of the OCaml *)
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(* source tree. *)
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(* *)
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(****************************************************************************)
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#default_quotation "expr";
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open Camlp4.PreCast;
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open Format;
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module FV = Camlp4.Struct.FreeVars.Make Ast;
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module PP = Camlp4.Printers.OCaml.Make Syntax;
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module S = FV.S;
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value _loc = Loc.ghost;
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value pervasives =
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let list =
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[ "+"; "-"; "/"; "*" (* ... *) ]
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in List.fold_right S.add list S.empty;
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value f e =
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let fv = FV.free_vars pervasives e in
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S.fold (fun x acc -> << fun ~ $x$ -> $acc$ >>) fv e;
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value print_expr = (new PP.printer ())#expr;
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printf "%a@." print_expr (f <<let z = x + 2 in x + 2 * y * x * z>>);
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