+corePrepExprFloat env (Case (Var id) bndr ty [(DEFAULT,[],expr)])
+ | Just (TickBox {}) <- isTickBoxOp_maybe id
+ = corePrepAnExpr env expr `thenUs` \ expr1 ->
+ deLamFloat expr1 `thenUs` \ (floats, expr2) ->
+ return (floats, Case (Var id) bndr ty [(DEFAULT,[],expr2)])
+
+-- Translate Binary tickBox into standard tickBox
+corePrepExprFloat env (App (Var id) expr)
+ | Just (BinaryTickBox m t e) <- isTickBoxOp_maybe id
+ = corePrepAnExpr env expr `thenUs` \ expr1 ->
+ deLamFloat expr1 `thenUs` \ (floats, expr2) ->
+ getUniqueUs `thenUs` \ u1 ->
+ getUniqueUs `thenUs` \ u2 ->
+ getUniqueUs `thenUs` \ u3 ->
+ getUniqueUs `thenUs` \ u4 ->
+ getUniqueUs `thenUs` \ u5 ->
+ let bndr1 = mkSysLocal FSLIT("t1") u1 boolTy in
+ let bndr2 = mkSysLocal FSLIT("t2") u2 realWorldStatePrimTy in
+ let bndr3 = mkSysLocal FSLIT("t3") u3 realWorldStatePrimTy in
+ let tick_e = mkTickBoxOpId u4 m e in
+ let tick_t = mkTickBoxOpId u5 m t in
+ return (floats, Case expr2
+ bndr1
+ boolTy
+ [ (DataAlt falseDataCon, [],
+ Case (Var tick_e) bndr2 boolTy [(DEFAULT,[],Var falseDataConId)])
+ , (DataAlt trueDataCon, [],
+ Case (Var tick_t) bndr3 boolTy [(DEFAULT,[],Var trueDataConId)])
+ ])
+