- we now use a streaming architecture (run time gain: 11 secs)

[helm.git] / helm / software / lambda-delta / lib / cps.ml

diff --git a/helm/software/lambda-delta/lib/cps.ml b/helm/software/lambda-delta/lib/cps.ml
new file mode 100644 (file)
index 0000000..199a786
--- /dev/null
+++ b/helm/software/lambda-delta/lib/cps.ml
@@ -0,0 +1,56 @@
+(* Copyright (C) 2000, HELM Team.
+ * 
+ * This file is part of HELM, an Hypertextual, Electronic
+ * Library of Mathematics, developed at the Computer Science
+ * Department, University of Bologna, Italy.
+ * 
+ * HELM is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ * 
+ * HELM is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with HELM; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston,
+ * MA  02111-1307, USA.
+ * 
+ * For details, see the HELM World-Wide-Web page,
+ * http://cs.unibo.it/helm/.
+ *)
+
+let id x = x
+
+let rec list_sub_strict f l1 l2 = match l1, l2 with
+   | _, []              -> f l1
+   | _ :: tl1, _ :: tl2 -> list_sub_strict f tl1 tl2
+   | _                  -> assert false
+
+let rec list_fold_left f map a = function
+   | []       -> f a
+   | hd :: tl -> 
+      let f a = list_fold_left f map a tl in
+      map f a hd
+
+let rec list_rev_map_append f map ~tail = function
+      | []       -> f tail        
+      | hd :: tl ->
+         let f hd = list_rev_map_append f map ~tail:(hd :: tail) tl in
+         map f hd
+
+let list_rev_append f =
+   list_rev_map_append f (fun f t -> f t)
+
+let list_rev_map =
+   list_rev_map_append ~tail:[]
+
+let list_rev =
+   list_rev_append ~tail:[]
+
+let list_map f =
+   list_rev_map (list_rev f)
+