From 824f2987d47e87d58ee2a4a96d7be417aad6aeab Mon Sep 17 00:00:00 2001
From: Sébastien Dailly <sebastien@chimrod.com>
Date: Wed, 31 Jan 2018 13:20:20 +0100
Subject: API refactoring : made the GADT abstract, provide contructor for each
 case, and deported the expression with evaluation with module functors

---
 src/expressions/sym_ref.ml | 12 ++++++++++++
 1 file changed, 12 insertions(+)
 create mode 100755 src/expressions/sym_ref.ml

(limited to 'src/expressions/sym_ref.ml')

diff --git a/src/expressions/sym_ref.ml b/src/expressions/sym_ref.ml
new file mode 100755
index 0000000..aba8053
--- /dev/null
+++ b/src/expressions/sym_ref.ml
@@ -0,0 +1,12 @@
+module type SYM_REF = sig
+
+  type 'a t
+
+  type 'a obs
+
+  val cell : Cell.t -> 'a t
+
+  val range : Cell.t -> Cell.t -> 'a t
+
+  val observe : 'a t -> 'a obs
+end
-- 
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