diff options
| author |  Adam Chlipala <adamc@hcoop.net> | 2008-10-23 17:35:10 -0400 |
|---|---|---|
| committer | Adam Chlipala <adamc@hcoop.net> | 2008-10-23 17:35:10 -0400 |
| commit | da7b52ba28367cf2b31476e77e1a26e53e4765e4 (patch) | |
| tree | 5de8de2f16499f80ffe6cd1cb7bc2afb6ca851d4 /demo | |
| parent | a2495d384c7747a079cb0f4bc31f44d626391068 (diff) | |
Fix bug with bringing functor argument instances into scope; Ref demo, minus prose
Diffstat (limited to 'demo')
| -rw-r--r-- | demo/prose | 2 | ||||
| -rw-r--r-- | demo/ref.ur | 28 | ||||
| -rw-r--r-- | demo/ref.urp | 4 | ||||
| -rw-r--r-- | demo/ref.urs | 1 | ||||
| -rw-r--r-- | demo/refFun.ur | 27 | ||||
| -rw-r--r-- | demo/refFun.urs | 10 |
6 files changed, 72 insertions, 0 deletions
@@ -108,3 +108,5 @@ tcSum.urp metaform1.urp metaform2.urp + +ref.urp diff --git a/demo/ref.ur b/demo/ref.ur new file mode 100644 index 00000000..089529e3 --- /dev/null +++ b/demo/ref.ur @@ -0,0 +1,28 @@ +structure IR = RefFun.Make(struct + type t = int + val inj = _ + end) + +structure SR = RefFun.Make(struct + type t = string + val inj = _ + end) + +fun main () = + ir <- IR.new 3; + ir' <- IR.new 7; + sr <- SR.new "hi"; + + () <- IR.write ir' 10; + + iv <- IR.read ir; + iv' <- IR.read ir'; + sv <- SR.read sr; + + () <- IR.delete ir; + () <- IR.delete ir'; + () <- SR.delete sr; + + return <xml><body> + {[iv]}, {[iv']}, {[sv]} + </body></xml> diff --git a/demo/ref.urp b/demo/ref.urp new file mode 100644 index 00000000..c00e5406 --- /dev/null +++ b/demo/ref.urp @@ -0,0 +1,4 @@ +database dbname=test + +refFun +ref diff --git a/demo/ref.urs b/demo/ref.urs new file mode 100644 index 00000000..6ac44e0b --- /dev/null +++ b/demo/ref.urs @@ -0,0 +1 @@ +val main : unit -> transaction page diff --git a/demo/refFun.ur b/demo/refFun.ur new file mode 100644 index 00000000..d58acee5 --- /dev/null +++ b/demo/refFun.ur @@ -0,0 +1,27 @@ +functor Make(M : sig + type data + val inj : sql_injectable data + end) = struct + + type ref = int + + sequence s + table t : { Id : int, Data : M.data } + + fun new d = + id <- nextval s; + () <- dml (INSERT INTO t (Id, Data) VALUES ({id}, {d})); + return id + + fun read r = + o <- oneOrNoRows (SELECT t.Data FROM t WHERE t.Id = {r}); + return (case o of + None => error <xml>You already deleted that ref!</xml> + | Some r => r.T.Data) + + fun write r d = + dml (UPDATE t SET Data = {d} WHERE Id = {r}) + + fun delete r = + dml (DELETE FROM t WHERE Id = {r}) +end diff --git a/demo/refFun.urs b/demo/refFun.urs new file mode 100644 index 00000000..bcecc8d3 --- /dev/null +++ b/demo/refFun.urs @@ -0,0 +1,10 @@ +functor Make(M : sig + type data + val inj : sql_injectable data + end) : sig + type ref + val new : M.data -> transaction ref + val read : ref -> transaction M.data + val write : ref -> M.data -> transaction unit + val delete : ref -> transaction unit +end |