1 files changed, 18 insertions, 0 deletions

diff --git a/lib/conventions.ml b/lib/conventions.ml
index 0019447..60069b0 100644
--- a/lib/conventions.ml
+++ b/lib/conventions.ml
@@ -2,17 +2,35 @@ module Hash = struct
   type t = Interop.Sha256.t
   let hash_text text = Interop.Sha256.compute_hash (Bytes.of_string text)
   let compare = String.compare
+  let sexp_of_t = Sexplib.Std.sexp_of_string
 end
 
 module Name = struct
   type t = string
+  let sexp_of_t = Sexplib.Std.sexp_of_string
 end
 
 module Cardinality = struct
   type t = Finite of int | ConstrainedFinite | AlephZero | Continuum
+  let sexp_of_t = function
+    | Finite n         -> Sexplib.Sexp.(List [Atom "Finite"; Atom (string_of_int n)])
+    | ConstrainedFinite -> Sexplib.Sexp.Atom "ConstrainedFinite"
+    | AlephZero         -> Sexplib.Sexp.Atom "AlephZero"
+    | Continuum         -> Sexplib.Sexp.Atom "Continuum"
 end
 
 module AbstractValue = struct
   type t = Obj.t
   let hash (elem: t) = Interop.Sha256.compute_hash @@ Marshal.to_bytes elem []
+  let sexp_of_t (v : t) =
+    let open Sexplib.Sexp in
+    if Obj.is_int v then Atom (string_of_int (Obj.obj v : int))
+    else
+      let tag = Obj.tag v in
+      if tag = Obj.string_tag then Atom (Obj.obj v : string)
+      else if tag = Obj.double_tag then
+        let f = (Obj.obj v : float) in
+        if Float.is_nan f || Float.is_infinite f then Atom "nan"
+        else Atom (string_of_float f)
+      else Atom "<opaque>"
 end
\ No newline at end of file