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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 Monoize :> MONOIZE = struct
structure E = ErrorMsg
structure Env = CoreEnv
structure L = Core
structure L' = Mono
val dummyTyp = (L'.TNamed 0, E.dummySpan)
fun monoName env (all as (c, loc)) =
let
fun poly () =
(E.errorAt loc "Unsupported name constructor";
Print.eprefaces' [("Constructor", CorePrint.p_con env all)];
"")
in
case c of
L.CName s => s
| _ => poly ()
end
fun monoType env (all as (c, loc)) =
let
fun poly () =
(E.errorAt loc "Unsupported type constructor";
Print.eprefaces' [("Constructor", CorePrint.p_con env all)];
dummyTyp)
in
case c of
L.TFun (c1, c2) => (L'.TFun (monoType env c1, monoType env c2), loc)
| L.TCFun _ => poly ()
| L.TRecord (L.CRecord ((L.KType, _), xcs), _) =>
(L'.TRecord (map (fn (x, t) => (monoName env x, monoType env t)) xcs), loc)
| L.TRecord _ => poly ()
| L.CRel _ => poly ()
| L.CNamed n => (L'.TNamed n, loc)
| L.CApp _ => poly ()
| L.CAbs _ => poly ()
| L.CName _ => poly ()
| L.CRecord _ => poly ()
| L.CConcat _ => poly ()
end
val dummyExp = (L'.EPrim (Prim.Int 0), E.dummySpan)
fun monoExp env (all as (e, loc)) =
let
fun poly () =
(E.errorAt loc "Unsupported expression";
Print.eprefaces' [("Expression", CorePrint.p_exp env all)];
dummyExp)
in
case e of
L.EPrim p => (L'.EPrim p, loc)
| L.ERel n => (L'.ERel n, loc)
| L.ENamed n => (L'.ENamed n, loc)
| L.EApp (e1, e2) => (L'.EApp (monoExp env e1, monoExp env e2), loc)
| L.EAbs (x, dom, ran, e) =>
(L'.EAbs (x, monoType env dom, monoType env ran, monoExp (Env.pushERel env x dom) e), loc)
| L.ECApp _ => poly ()
| L.ECAbs _ => poly ()
| L.ERecord xes => (L'.ERecord (map (fn (x, e, t) => (monoName env x, monoExp env e, monoType env t)) xes), loc)
| L.EField (e, x, _) => (L'.EField (monoExp env e, monoName env x), loc)
end
fun monoDecl env (all as (d, loc)) =
let
fun poly () =
(E.errorAt loc "Unsupported declaration";
Print.eprefaces' [("Declaration", CorePrint.p_decl env all)];
NONE)
in
case d of
L.DCon _ => NONE
| L.DVal (x, n, t, e) => SOME (Env.pushENamed env x n t (SOME e),
(L'.DVal (x, n, monoType env t, monoExp env e), loc))
end
fun monoize env ds =
let
val (_, ds) = List.foldl (fn (d, (env, ds)) =>
case monoDecl env d of
NONE => (env, ds)
| SOME (env, d) => (env, d :: ds)) (env, []) ds
in
rev ds
end
end
|
