1 files changed, 36 insertions, 0 deletions
diff --git a/abstract/environment_domain.ml b/abstract/environment_domain.ml
new file mode 100644
index 0000000..5664474
--- /dev/null
+++ b/abstract/environment_domain.ml
@@ -0,0 +1,36 @@
+open Ast
+open Formula
+
+module type ENVIRONMENT_DOMAIN = sig
+    type t
+
+    (* construction *)
+    val init        : t
+    val bottom      : t
+    val is_bot      : t -> bool
+
+    (* variable management *)
+    val addvar      : t -> id -> bool -> t     (* integer or float variable ? *)
+    val rmvar       : t -> id -> t
+    val vars        : t -> (id * bool) list
+    val vbottom     : t -> t       (* bottom value with same environment *)
+
+    (* abstract operation *)
+    val apply_f     : t -> bool_expr -> t
+    val apply_cl    : t -> conslist -> t
+
+    (* set-theoretic operations *)
+    val join        : t -> t -> t       (* union *)
+    val meet        : t -> t -> t       (* intersection *)
+    val widen       : t -> t -> t
+
+    (* order *)
+    val subset      : t -> t -> bool
+    val eq          : t -> t -> bool
+
+    (* pretty-printing *)
+    val print_vars  : Format.formatter -> t -> id list -> unit
+    val print_all   : Format.formatter -> t -> unit
+end
+
+