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|
(* Copyright (c) 2008, Adam Chlipala
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* - Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* - Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
* - The names of contributors may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*)
structure Prepare :> PREPARE = struct
open Cjr
open Settings
fun prepString (e, ss, n) =
let
fun doOne t =
SOME (#p_blank (Settings.currentDbms ()) (n + 1, t) :: ss, n + 1)
in
case #1 e of
EPrim (Prim.String s) =>
SOME (s :: ss, n)
| EFfiApp ("Basis", "strcat", [e1, e2]) =>
(case prepString (e1, ss, n) of
NONE => NONE
| SOME (ss, n) => prepString (e2, ss, n))
| EFfiApp ("Basis", "sqlifyInt", [e]) => doOne Int
| EFfiApp ("Basis", "sqlifyFloat", [e]) => doOne Float
| EFfiApp ("Basis", "sqlifyString", [e]) => doOne String
| EFfiApp ("Basis", "sqlifyBool", [e]) => doOne Bool
| EFfiApp ("Basis", "sqlifyTime", [e]) => doOne Time
| EFfiApp ("Basis", "sqlifyBlob", [e]) => doOne Blob
| EFfiApp ("Basis", "sqlifyChannel", [e]) => doOne Channel
| EFfiApp ("Basis", "sqlifyClient", [e]) => doOne Client
| ECase (e,
[((PNone _, _),
(EPrim (Prim.String "NULL"), _)),
((PSome (_, (PVar _, _)), _),
(EFfiApp (m, x, [(ERel 0, _)]), _))],
_) => prepString ((EFfiApp (m, x, [e]), #2 e), ss, n)
| ECase (e,
[((PCon (_, PConFfi {mod = "Basis", con = "True", ...}, _), _),
(EPrim (Prim.String "TRUE"), _)),
((PCon (_, PConFfi {mod = "Basis", con = "False", ...}, _), _),
(EPrim (Prim.String "FALSE"), _))],
_) => doOne Bool
| _ => NONE
end
fun prepExp (e as (_, loc), sns) =
case #1 e of
EPrim _ => (e, sns)
| ERel _ => (e, sns)
| ENamed _ => (e, sns)
| ECon (_, _, NONE) => (e, sns)
| ECon (dk, pc, SOME e) =>
let
val (e, sns) = prepExp (e, sns)
in
((ECon (dk, pc, SOME e), loc), sns)
end
| ENone t => (e, sns)
| ESome (t, e) =>
let
val (e, sns) = prepExp (e, sns)
in
((ESome (t, e), loc), sns)
end
| EFfi _ => (e, sns)
| EFfiApp (m, x, es) =>
let
val (es, sns) = ListUtil.foldlMap prepExp sns es
in
((EFfiApp (m, x, es), loc), sns)
end
| EApp (e1, es) =>
let
val (e1, sns) = prepExp (e1, sns)
val (es, sns) = ListUtil.foldlMap prepExp sns es
in
((EApp (e1, es), loc), sns)
end
| EUnop (s, e1) =>
let
val (e1, sns) = prepExp (e1, sns)
in
((EUnop (s, e1), loc), sns)
end
| EBinop (s, e1, e2) =>
let
val (e1, sns) = prepExp (e1, sns)
val (e2, sns) = prepExp (e2, sns)
in
((EBinop (s, e1, e2), loc), sns)
end
| ERecord (rn, xes) =>
let
val (xes, sns) = ListUtil.foldlMap (fn ((x, e), sns) =>
let
val (e, sns) = prepExp (e, sns)
in
((x, e), sns)
end) sns xes
in
((ERecord (rn, xes), loc), sns)
end
| EField (e, s) =>
let
val (e, sns) = prepExp (e, sns)
in
((EField (e, s), loc), sns)
end
| ECase (e, pes, ts) =>
let
val (e, sns) = prepExp (e, sns)
val (pes, sns) = ListUtil.foldlMap (fn ((p, e), sns) =>
let
val (e, sns) = prepExp (e, sns)
in
((p, e), sns)
end) sns pes
in
((ECase (e, pes, ts), loc), sns)
end
| EError (e, t) =>
let
val (e, sns) = prepExp (e, sns)
in
((EError (e, t), loc), sns)
end
| EReturnBlob {blob, mimeType, t} =>
let
val (blob, sns) = prepExp (blob, sns)
val (mimeType, sns) = prepExp (mimeType, sns)
in
((EReturnBlob {blob = blob, mimeType = mimeType, t = t}, loc), sns)
end
| EWrite e =>
let
val (e, sns) = prepExp (e, sns)
in
((EWrite e, loc), sns)
end
| ESeq (e1, e2) =>
let
val (e1, sns) = prepExp (e1, sns)
val (e2, sns) = prepExp (e2, sns)
in
((ESeq (e1, e2), loc), sns)
end
| ELet (x, t, e1, e2) =>
let
val (e1, sns) = prepExp (e1, sns)
val (e2, sns) = prepExp (e2, sns)
in
((ELet (x, t, e1, e2), loc), sns)
end
| EQuery {exps, tables, rnum, state, query, body, initial, ...} =>
let
val (body, sns) = prepExp (body, sns)
in
case prepString (query, [], 0) of
NONE =>
((EQuery {exps = exps, tables = tables, rnum = rnum,
state = state, query = query, body = body,
initial = initial, prepared = NONE}, loc),
sns)
| SOME (ss, n) =>
let
val s = String.concat (rev ss)
in
((EQuery {exps = exps, tables = tables, rnum = rnum,
state = state, query = query, body = body,
initial = initial, prepared = SOME {id = #2 sns, query = s, nested = true}}, loc),
((s, n) :: #1 sns, #2 sns + 1))
end
end
| EDml {dml, ...} =>
(case prepString (dml, [], 0) of
NONE => (e, sns)
| SOME (ss, n) =>
let
val s = String.concat (rev ss)
in
((EDml {dml = dml, prepared = SOME {id = #2 sns, dml = s}}, loc),
((s, n) :: #1 sns, #2 sns + 1))
end)
| ENextval {seq, ...} =>
if #supportsNextval (Settings.currentDbms ()) then
let
val s = case seq of
(EPrim (Prim.String s), loc) =>
(EPrim (Prim.String ("SELECT NEXTVAL('" ^ s ^ "')")), loc)
| _ =>
let
val s' = (EFfiApp ("Basis", "strcat", [seq, (EPrim (Prim.String "')"), loc)]), loc)
in
(EFfiApp ("Basis", "strcat", [(EPrim (Prim.String "SELECT NEXTVAL('"), loc), s']), loc)
end
in
case prepString (s, [], 0) of
NONE => (e, sns)
| SOME (ss, n) =>
let
val s = String.concat (rev ss)
in
((ENextval {seq = seq, prepared = SOME {id = #2 sns, query = s}}, loc),
((s, n) :: #1 sns, #2 sns + 1))
end
end
else
(e, sns)
| EUnurlify (e, t) =>
let
val (e, sns) = prepExp (e, sns)
in
((EUnurlify (e, t), loc), sns)
end
fun prepDecl (d as (_, loc), sns) =
case #1 d of
DStruct _ => (d, sns)
| DDatatype _ => (d, sns)
| DDatatypeForward _ => (d, sns)
| DVal (x, n, t, e) =>
let
val (e, sns) = prepExp (e, sns)
in
((DVal (x, n, t, e), loc), sns)
end
| DFun (x, n, xts, t, e) =>
let
val (e, sns) = prepExp (e, sns)
in
((DFun (x, n, xts, t, e), loc), sns)
end
| DFunRec fs =>
let
val (fs, sns) = ListUtil.foldlMap (fn ((x, n, xts, t, e), sns) =>
let
val (e, sns) = prepExp (e, sns)
in
((x, n, xts, t, e), sns)
end) sns fs
in
((DFunRec fs, loc), sns)
end
| DTable _ => (d, sns)
| DSequence _ => (d, sns)
| DView _ => (d, sns)
| DDatabase _ => (d, sns)
| DPreparedStatements _ => (d, sns)
| DJavaScript _ => (d, sns)
| DCookie _ => (d, sns)
| DStyle _ => (d, sns)
fun prepare (ds, ps) =
let
val (ds, (sns, _)) = ListUtil.foldlMap prepDecl ([], 0) ds
in
((DPreparedStatements (rev sns), ErrorMsg.dummySpan) :: ds, ps)
end
end
|
