# HG changeset patch
# User Adam Chlipala <adamc@hcoop.net>
# Date 1221150126 14400
# Node ID aa89b73d83e4fbb299061b16870b5342276344dd
# Parent  cd4cabaf3e52bd9d40c63505dc3abe07714c395f
Improve detection of opportunities for prepared statements with bool parameters

diff -r cd4cabaf3e52 -r aa89b73d83e4 src/cjr_print.sml
--- a/src/cjr_print.sml	Thu Sep 11 12:12:22 2008 -0400
+++ b/src/cjr_print.sml	Thu Sep 11 12:22:06 2008 -0400
@@ -425,6 +425,7 @@
       | EFfiApp ("Basis", "sqlifyFloat", [e]) => [(e, Float)]
       | EFfiApp ("Basis", "sqlifyString", [e]) => [(e, String)]
       | EFfiApp ("Basis", "sqlifyBool", [e]) => [(e, Bool)]
+      | ECase (e, _, _) => [(e, Bool)]
 
       | _ => raise Fail "CjrPrint: getPargs"
 
diff -r cd4cabaf3e52 -r aa89b73d83e4 src/prepare.sml
--- a/src/prepare.sml	Thu Sep 11 12:12:22 2008 -0400
+++ b/src/prepare.sml	Thu Sep 11 12:22:06 2008 -0400
@@ -45,6 +45,12 @@
         SOME ("$" ^ Int.toString (n + 1) ^ "::text" :: ss, n + 1)
       | EFfiApp ("Basis", "sqlifyBool", [e]) =>
         SOME ("$" ^ Int.toString (n + 1) ^ "::bool" :: ss, n + 1)
+      | ECase (e,
+               [((PCon (_, PConFfi {mod = "Basis", con = "True", ...}, _), _),
+                 (EPrim (Prim.String "TRUE"), _)),
+                ((PCon (_, PConFfi {mod = "Basis", con = "False", ...}, _), _),
+                 (EPrim (Prim.String "FALSE"), _))],
+               _) => SOME ("$" ^ Int.toString (n + 1) ^ "::bool" :: ss, n + 1)
 
       | _ => NONE