adamc@25: (* Copyright (c) 2008, Adam Chlipala
adamc@25:  * All rights reserved.
adamc@25:  *
adamc@25:  * Redistribution and use in source and binary forms, with or without
adamc@25:  * modification, are permitted provided that the following conditions are met:
adamc@25:  *
adamc@25:  * - Redistributions of source code must retain the above copyright notice,
adamc@25:  *   this list of conditions and the following disclaimer.
adamc@25:  * - Redistributions in binary form must reproduce the above copyright notice,
adamc@25:  *   this list of conditions and the following disclaimer in the documentation
adamc@25:  *   and/or other materials provided with the distribution.
adamc@25:  * - The names of contributors may not be used to endorse or promote products
adamc@25:  *   derived from this software without specific prior written permission.
adamc@25:  *
adamc@25:  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
adamc@25:  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
adamc@25:  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
adamc@25:  * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
adamc@25:  * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 
adamc@25:  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
adamc@25:  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
adamc@25:  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
adamc@25:  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
adamc@25:  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
adamc@25:  * POSSIBILITY OF SUCH DAMAGE.
adamc@25:  *)
adamc@25: 
adamc@25: structure Monoize :> MONOIZE = struct
adamc@25: 
adamc@25: structure E = ErrorMsg
adamc@25: structure Env = CoreEnv
adamc@25: 
adamc@25: structure L = Core
adamc@25: structure L' = Mono
adamc@25: 
adamc@25: val dummyTyp = (L'.TNamed 0, E.dummySpan)
adamc@25: 
adamc@25: fun monoName env (all as (c, loc)) =
adamc@25:     let
adamc@25:         fun poly () =
adamc@25:             (E.errorAt loc "Unsupported name constructor";
adamc@25:              Print.eprefaces' [("Constructor", CorePrint.p_con env all)];
adamc@25:              "")
adamc@25:     in
adamc@25:         case c of
adamc@25:             L.CName s => s
adamc@25:           | _ => poly ()
adamc@25:     end
adamc@25: 
adamc@25: fun monoType env (all as (c, loc)) =
adamc@25:     let
adamc@25:         fun poly () =
adamc@25:             (E.errorAt loc "Unsupported type constructor";
adamc@25:              Print.eprefaces' [("Constructor", CorePrint.p_con env all)];
adamc@25:              dummyTyp)
adamc@25:     in
adamc@25:         case c of
adamc@25:             L.TFun (c1, c2) => (L'.TFun (monoType env c1, monoType env c2), loc)
adamc@25:           | L.TCFun _ => poly ()
adamc@25:           | L.TRecord (L.CRecord ((L.KType, _), xcs), _) =>
adamc@25:             (L'.TRecord (map (fn (x, t) => (monoName env x, monoType env t)) xcs), loc)
adamc@25:           | L.TRecord _ => poly ()
adamc@25: 
adamc@94:           | L.CApp ((L.CFfi ("Basis", "xml"), _), _) => (L'.TFfi ("Basis", "string"), loc)
adamc@94: 
adamc@25:           | L.CRel _ => poly ()
adamc@25:           | L.CNamed n => (L'.TNamed n, loc)
adamc@51:           | L.CFfi mx => (L'.TFfi mx, loc)
adamc@25:           | L.CApp _ => poly ()
adamc@25:           | L.CAbs _ => poly ()
adamc@25: 
adamc@25:           | L.CName _ => poly ()
adamc@25: 
adamc@25:           | L.CRecord _ => poly ()
adamc@25:           | L.CConcat _ => poly ()
adamc@69:           | L.CFold _ => poly ()
adamc@87:           | L.CUnit => poly ()
adamc@25:     end
adamc@25: 
adamc@25: val dummyExp = (L'.EPrim (Prim.Int 0), E.dummySpan)
adamc@25: 
adamc@25: fun monoExp env (all as (e, loc)) =
adamc@25:     let
adamc@25:         fun poly () =
adamc@25:             (E.errorAt loc "Unsupported expression";
adamc@25:              Print.eprefaces' [("Expression", CorePrint.p_exp env all)];
adamc@25:              dummyExp)
adamc@25:     in
adamc@25:         case e of
adamc@25:             L.EPrim p => (L'.EPrim p, loc)
adamc@25:           | L.ERel n => (L'.ERel n, loc)
adamc@25:           | L.ENamed n => (L'.ENamed n, loc)
adamc@51:           | L.EFfi mx => (L'.EFfi mx, loc)
adamc@51:           | L.EFfiApp (m, x, es) => (L'.EFfiApp (m, x, map (monoExp env) es), loc)
adamc@94: 
adamc@94:           | L.EApp ((L.ECApp ((L.EFfi ("Basis", "cdata"), _),
adamc@94:                               _), _), se) => monoExp env se
adamc@94: 
adamc@25:           | L.EApp (e1, e2) => (L'.EApp (monoExp env e1, monoExp env e2), loc)
adamc@26:           | L.EAbs (x, dom, ran, e) =>
adamc@26:             (L'.EAbs (x, monoType env dom, monoType env ran, monoExp (Env.pushERel env x dom) e), loc)
adamc@25:           | L.ECApp _ => poly ()
adamc@25:           | L.ECAbs _ => poly ()
adamc@25: 
adamc@29:           | L.ERecord xes => (L'.ERecord (map (fn (x, e, t) => (monoName env x, monoExp env e, monoType env t)) xes), loc)
adamc@25:           | L.EField (e, x, _) => (L'.EField (monoExp env e, monoName env x), loc)
adamc@73:           | L.EFold _ => poly ()
adamc@25:     end
adamc@25: 
adamc@25: fun monoDecl env (all as (d, loc)) =
adamc@25:     let
adamc@25:         fun poly () =
adamc@25:             (E.errorAt loc "Unsupported declaration";
adamc@25:              Print.eprefaces' [("Declaration", CorePrint.p_decl env all)];
adamc@25:              NONE)
adamc@25:     in
adamc@25:         case d of
adamc@25:             L.DCon _ => NONE
adamc@25:           | L.DVal (x, n, t, e) => SOME (Env.pushENamed env x n t (SOME e),
adamc@25:                                          (L'.DVal (x, n, monoType env t, monoExp env e), loc))
adamc@25:     end
adamc@25: 
adamc@25: fun monoize env ds =
adamc@25:     let
adamc@25:         val (_, ds) = List.foldl (fn (d, (env, ds)) =>
adamc@25:                                      case monoDecl env d of
adamc@25:                                          NONE => (env, ds)
adamc@25:                                        | SOME (env, d) => (env, d :: ds)) (env, []) ds
adamc@25:     in
adamc@25:         rev ds
adamc@25:     end
adamc@25: 
adamc@25: end