More work factoring out Sqlcache back end.

1 files changed, 16 insertions, 0 deletions

diff --git a/src/cache.sml b/src/cache.sml
new file mode 100644
index 00000000..8de22e0d
--- /dev/null
+++ b/src/cache.sml
@@ -0,0 +1,16 @@
+structure Cache = struct
+
+type cache =
+     {(* Takes a query ID and parameters (and, for store, the value to
+            store) and gives an FFI call that checks, stores, or flushes the
+            relevant entry. The parameters are strings for check and store and
+            optional strings for flush because some parameters might not be
+            fixed. *)
+      check : int * Mono.exp list -> Mono.exp',
+      store : int * Mono.exp list * Mono.exp -> Mono.exp',
+      flush : int * Mono.exp list -> Mono.exp',
+      (* Generates C needed for FFI calls in check, store, and flush. *)
+      setupGlobal : Print.PD.pp_desc,
+      setupQuery : {index : int, params : int} -> Print.PD.pp_desc}
+
+end