when sort inclusion is enabled, we can produce conversion constraints in xml

[helm.git] / helm / software / lambda-delta / src / common / ccs.ml

diff --git a/helm/software/lambda-delta/src/common/ccs.ml b/helm/software/lambda-delta/src/common/ccs.ml
new file mode 100644 (file)
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+++ b/helm/software/lambda-delta/src/common/ccs.ml
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+(*
+    ||M||  This file is part of HELM, an Hypertextual, Electronic        
+    ||A||  Library of Mathematics, developed at the Computer Science     
+    ||T||  Department, University of Bologna, Italy.                     
+    ||I||                                                                
+    ||T||  HELM is free software; you can redistribute it and/or         
+    ||A||  modify it under the terms of the GNU General Public License   
+    \   /  version 2 or (at your option) any later version.              
+     \ /   This software is distributed as is, NO WARRANTY.              
+      V_______________________________________________________________ *)
+
+module L = List
+module U = NUri
+module C = Cps
+module E = Entity
+module G = Options
+
+type csys = {
+           uri: E.uri;
+   mutable is : int list
+}
+
+let mark a = E.mark C.err C.start a
+
+(* interface functions ******************************************************)
+
+let init () = {
+   uri = U.uri_of_string (G.get_baseuri ());
+   is = [];
+}
+
+let add_infinite s a = 
+   if !G.si && !G.cc then
+      let i = abs (mark a) in
+      if L.mem i s.is then () else s.is <- i :: s.is
+   else ()