adamc@16: (* Copyright (c) 2008, Adam Chlipala
adamc@16:  * All rights reserved.
adamc@16:  *
adamc@16:  * Redistribution and use in source and binary forms, with or without
adamc@16:  * modification, are permitted provided that the following conditions are met:
adamc@16:  *
adamc@16:  * - Redistributions of source code must retain the above copyright notice,
adamc@16:  *   this list of conditions and the following disclaimer.
adamc@16:  * - Redistributions in binary form must reproduce the above copyright notice,
adamc@16:  *   this list of conditions and the following disclaimer in the documentation
adamc@16:  *   and/or other materials provided with the distribution.
adamc@16:  * - The names of contributors may not be used to endorse or promote products
adamc@16:  *   derived from this software without specific prior written permission.
adamc@16:  *
adamc@16:  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
adamc@16:  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
adamc@16:  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
adamc@16:  * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
adamc@16:  * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 
adamc@16:  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
adamc@16:  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
adamc@16:  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
adamc@16:  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
adamc@16:  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
adamc@16:  * POSSIBILITY OF SUCH DAMAGE.
adamc@16:  *)
adamc@16: 
adamc@16: structure Corify :> CORIFY = struct
adamc@16: 
adamc@16: structure EM = ErrorMsg
adamc@39: structure L = Expl
adamc@16: structure L' = Core
adamc@16: 
adamc@39: structure IM = IntBinaryMap
adamc@39: structure SM = BinaryMapFn(struct
adamc@39:                            type ord_key = string
adamc@39:                            val compare = String.compare
adamc@39:                            end)
adamc@39: 
adamc@39: local
adamc@39:     val count = ref 0
adamc@39: in
adamc@39: 
adamc@39: fun reset v = count := v
adamc@39: 
adamc@39: fun alloc () =
adamc@39:     let
adamc@39:         val r = !count
adamc@39:     in
adamc@39:         count := r + 1;
adamc@39:         r
adamc@39: end
adamc@39: 
adamc@39: end
adamc@39: 
adamc@39: structure St : sig
adamc@39:     type t
adamc@39: 
adamc@39:     val empty : t
adamc@39: 
adamc@146:     val debug : t -> unit
adamc@146: 
adamc@39:     val enter : t -> t
adamc@39:     val leave : t -> {outer : t, inner : t}
adamc@188:     val ffi : string -> L'.con SM.map -> (string * L'.con option * L'.datatype_kind) SM.map -> t
adamc@39: 
adamc@73:     datatype core_con =
adamc@73:              CNormal of int
adamc@73:            | CFfi of string
adamc@73:     val bindCon : t -> string -> int -> t * int
adamc@73:     val lookupConById : t -> int -> int option
adamc@73:     val lookupConByName : t -> string -> core_con
adamc@48: 
adamc@177:     val bindConstructor : t -> string -> int -> L'.patCon -> t
adamc@186:     val lookupConstructorByNameOpt : t -> string -> L'.patCon option
adamc@177:     val lookupConstructorByName : t -> string -> L'.patCon
adamc@177:     val lookupConstructorById : t -> int -> L'.patCon
adamc@177: 
adamc@188:      datatype core_val =
adamc@188:               ENormal of int
adamc@188:             | EFfi of string * L'.con
adamc@188:      val bindVal : t -> string -> int -> t * int
adamc@188:      val bindConstructorVal : t -> string -> int -> t
adamc@188:      val lookupValById : t -> int -> int option
adamc@188:      val lookupValByName : t -> string -> core_val
adamc@39: 
adamc@188:      val bindStr : t -> string -> int -> t -> t
adamc@188:      val lookupStrById : t -> int -> t
adamc@188:      val lookupStrByName : string * t -> t
adamc@46: 
adamc@188:      val bindFunctor : t -> string -> int -> string -> int -> L.str -> t
adamc@188:      val lookupFunctorById : t -> int -> string * int * L.str
adamc@188:      val lookupFunctorByName : string * t -> string * int * L.str
adamc@188:  end = struct
adamc@39: 
adamc@188:  datatype flattening =
adamc@188:           FNormal of {cons : int SM.map,
adamc@188:                       constructors : L'.patCon SM.map,
adamc@188:                       vals : int SM.map,
adamc@188:                       strs : flattening SM.map,
adamc@188:                       funs : (string * int * L.str) SM.map}
adamc@188:         | FFfi of {mod : string,
adamc@188:                    vals : L'.con SM.map,
adamc@188:                    constructors : (string * L'.con option * L'.datatype_kind) SM.map}
adamc@39: 
adamc@188:  type t = {
adamc@188:       cons : int IM.map,
adamc@188:       constructors : L'.patCon IM.map,
adamc@188:       vals : int IM.map,
adamc@188:       strs : flattening IM.map,
adamc@188:       funs : (string * int * L.str) IM.map,
adamc@188:       current : flattening,
adamc@188:       nested : flattening list
adamc@188:  }
adamc@39: 
adamc@188:  val empty = {
adamc@188:      cons = IM.empty,
adamc@188:      constructors = IM.empty,
adamc@188:      vals = IM.empty,
adamc@188:      strs = IM.empty,
adamc@188:      funs = IM.empty,
adamc@188:      current = FNormal { cons = SM.empty, constructors = SM.empty, vals = SM.empty, strs = SM.empty, funs = SM.empty },
adamc@188:      nested = []
adamc@188:  }
adamc@146: 
adamc@188:  fun debug ({current = FNormal {cons, constructors, vals, strs, funs}, ...} : t) =
adamc@188:      print ("cons: " ^ Int.toString (SM.numItems cons) ^ "; "
adamc@188:             ^ "constructors: " ^ Int.toString (SM.numItems constructors) ^ "; "
adamc@188:             ^ "vals: " ^ Int.toString (SM.numItems vals) ^ "; "
adamc@188:             ^ "strs: " ^ Int.toString (SM.numItems strs) ^ "; "
adamc@188:             ^ "funs: " ^ Int.toString (SM.numItems funs) ^ "\n")
adamc@188:    | debug _ = print "Not normal!\n"
adamc@48: 
adamc@188:  datatype core_con =
adamc@188:           CNormal of int
adamc@188:         | CFfi of string
adamc@73: 
adamc@188:  datatype core_val =
adamc@188:           ENormal of int
adamc@188:         | EFfi of string * L'.con
adamc@39: 
adamc@188:  fun bindCon {cons, constructors, vals, strs, funs, current, nested} s n =
adamc@188:      let
adamc@188:          val n' = alloc ()
adamc@188: 
adamc@188:          val current =
adamc@188:              case current of
adamc@188:                  FFfi _ => raise Fail "Binding inside FFfi"
adamc@188:                | FNormal {cons, constructors, vals, strs, funs} =>
adamc@188:                  FNormal {cons = SM.insert (cons, s, n'),
adamc@188:                           constructors = constructors,
adamc@188:                           vals = vals,
adamc@188:                           strs = strs,
adamc@188:                           funs = funs}
adamc@188:      in
adamc@188:          ({cons = IM.insert (cons, n, n'),
adamc@188:            constructors = constructors,
adamc@188:            vals = vals,
adamc@188:            strs = strs,
adamc@188:            funs = funs,
adamc@188:            current = current,
adamc@188:            nested = nested},
adamc@188:           n')
adamc@188:      end
adamc@188: 
adamc@188:  fun lookupConById ({cons, ...} : t) n = IM.find (cons, n)
adamc@188: 
adamc@188:  fun lookupConByName ({current, ...} : t) x =
adamc@188:      case current of
adamc@188:          FFfi {mod = m, ...} => CFfi m
adamc@188:        | FNormal {cons, ...} =>
adamc@188:          case SM.find (cons, x) of
adamc@188:              NONE => raise Fail "Corify.St.lookupConByName"
adamc@188:            | SOME n => CNormal n
adamc@188: 
adamc@188:  fun bindVal {cons, constructors, vals, strs, funs, current, nested} s n =
adamc@188:      let
adamc@188:          val n' = alloc ()
adamc@188: 
adamc@188:          val current =
adamc@188:              case current of
adamc@188:                  FFfi _ => raise Fail "Binding inside FFfi"
adamc@188:                | FNormal {cons, constructors, vals, strs, funs} =>
adamc@188:                  FNormal {cons = cons,
adamc@188:                           constructors = constructors,
adamc@188:                           vals = SM.insert (vals, s, n'),
adamc@188:                           strs = strs,
adamc@188:                           funs = funs}
adamc@188:      in
adamc@188:          ({cons = cons,
adamc@188:            constructors = constructors,
adamc@188:            vals = IM.insert (vals, n, n'),
adamc@188:            strs = strs,
adamc@188:            funs = funs,
adamc@188:            current = current,
adamc@188:            nested = nested},
adamc@188:           n')
adamc@188:      end
adamc@188: 
adamc@188:  fun bindConstructorVal {cons, constructors, vals, strs, funs, current, nested} s n =
adamc@188:      let
adamc@188:          val current =
adamc@188:              case current of
adamc@188:                  FFfi _ => raise Fail "Binding inside FFfi"
adamc@188:                | FNormal {cons, constructors, vals, strs, funs} =>
adamc@188:                  FNormal {cons = cons,
adamc@188:                           constructors = constructors,
adamc@188:                           vals = SM.insert (vals, s, n),
adamc@188:                           strs = strs,
adamc@188:                           funs = funs}
adamc@188:      in
adamc@188:          {cons = cons,
adamc@177:           constructors = constructors,
adamc@188:           vals = IM.insert (vals, n, n),
adamc@188:           strs = strs,
adamc@188:           funs = funs,
adamc@188:           current = current,
adamc@188:           nested = nested}
adamc@188:      end
adamc@188: 
adamc@188: 
adamc@188:  fun lookupValById ({vals, ...} : t) n = IM.find (vals, n)
adamc@188: 
adamc@188:  fun lookupValByName ({current, ...} : t) x =
adamc@188:      case current of
adamc@188:          FFfi {mod = m, vals, ...} =>
adamc@188:          (case SM.find (vals, x) of
adamc@188:               NONE => raise Fail "Corify.St.lookupValByName: no type for FFI val"
adamc@188:             | SOME t => EFfi (m, t))
adamc@188:        | FNormal {vals, ...} =>
adamc@188:          case SM.find (vals, x) of
adamc@188:              NONE => raise Fail "Corify.St.lookupValByName"
adamc@188:            | SOME n => ENormal n
adamc@188: 
adamc@188:  fun bindConstructor {cons, constructors, vals, strs, funs, current, nested} s n n' =
adamc@188:      let
adamc@188:          val current =
adamc@188:              case current of
adamc@188:                  FFfi _ => raise Fail "Binding inside FFfi"
adamc@188:                | FNormal {cons, constructors, vals, strs, funs} =>
adamc@188:                  FNormal {cons = cons,
adamc@188:                           constructors = SM.insert (constructors, s, n'),
adamc@188:                           vals = vals,
adamc@188:                           strs = strs,
adamc@188:                           funs = funs}
adamc@188:      in
adamc@188:          {cons = cons,
adamc@188:           constructors = IM.insert (constructors, n, n'),
adamc@73:           vals = vals,
adamc@39:           strs = strs,
adamc@46:           funs = funs,
adamc@39:           current = current,
adamc@188:           nested = nested}
adamc@188:      end
adamc@39: 
adamc@188:  fun lookupConstructorById ({constructors, ...} : t) n =
adamc@188:      case IM.find (constructors, n) of
adamc@188:          NONE => raise Fail "Corify.St.lookupConstructorById"
adamc@188:        | SOME x => x
adamc@39: 
adamc@188:  fun lookupConstructorByNameOpt ({current, ...} : t) x =
adamc@188:      case current of
adamc@188:          FFfi {mod = m, constructors, ...} =>
adamc@188:          (case SM.find (constructors, x) of
adamc@188:               NONE => NONE
adamc@188:             | SOME (n, to, dk) => SOME (L'.PConFfi {mod = m, datatyp = n, con = x, arg = to, kind = dk}))
adamc@188:        | FNormal {constructors, ...} =>
adamc@188:          case SM.find (constructors, x) of
adamc@188:              NONE => NONE
adamc@188:            | SOME n => SOME n
adamc@39: 
adamc@188:  fun lookupConstructorByName ({current, ...} : t) x =
adamc@188:      case current of
adamc@188:          FFfi {mod = m, constructors, ...} =>
adamc@188:          (case SM.find (constructors, x) of
adamc@188:               NONE => raise Fail "Corify.St.lookupConstructorByName [1]"
adamc@188:             | SOME (n, to, dk) => L'.PConFfi {mod = m, datatyp = n, con = x, arg = to, kind = dk})
adamc@188:        | FNormal {constructors, ...} =>
adamc@188:          case SM.find (constructors, x) of
adamc@188:              NONE => raise Fail "Corify.St.lookupConstructorByName [2]"
adamc@188:            | SOME n => n
adamc@73: 
adamc@188:  fun enter {cons, constructors, vals, strs, funs, current, nested} =
adamc@188:      {cons = cons,
adamc@188:       constructors = constructors,
adamc@188:       vals = vals,
adamc@188:       strs = strs,
adamc@188:       funs = funs,
adamc@188:       current = FNormal {cons = SM.empty,
adamc@188:                          constructors = SM.empty,
adamc@188:                          vals = SM.empty,
adamc@188:                          strs = SM.empty,
adamc@188:                          funs = SM.empty},
adamc@188:       nested = current :: nested}
adamc@73: 
adamc@188:  fun dummy f = {cons = IM.empty,
adamc@188:                 constructors = IM.empty,
adamc@188:                 vals = IM.empty,
adamc@188:                 strs = IM.empty,
adamc@188:                 funs = IM.empty,
adamc@188:                 current = f,
adamc@188:                 nested = []}
adamc@163: 
adamc@188:  fun leave {cons, constructors, vals, strs, funs, current, nested = m1 :: rest} =
adamc@188:          {outer = {cons = cons,
adamc@188:                    constructors = constructors,
adamc@188:                    vals = vals,
adamc@188:                    strs = strs,
adamc@188:                    funs = funs,
adamc@188:                    current = m1,
adamc@188:                    nested = rest},
adamc@188:           inner = dummy current}
adamc@188:    | leave _ = raise Fail "Corify.St.leave"
adamc@177: 
adamc@188:  fun ffi m vals constructors = dummy (FFfi {mod = m, vals = vals, constructors = constructors})
adamc@73: 
adamc@188:  fun bindStr ({cons, constructors, vals, strs, funs,
adamc@188:                current = FNormal {cons = mcons, constructors = mconstructors,
adamc@188:                                   vals = mvals, strs = mstrs, funs = mfuns}, nested} : t)
adamc@188:              x n ({current = f, ...} : t) =
adamc@188:      {cons = cons,
adamc@188:       constructors = constructors,
adamc@188:       vals = vals,
adamc@188:       strs = IM.insert (strs, n, f),
adamc@188:       funs = funs,
adamc@188:       current = FNormal {cons = mcons,
adamc@188:                          constructors = mconstructors,
adamc@188:                          vals = mvals,
adamc@188:                          strs = SM.insert (mstrs, x, f),
adamc@188:                          funs = mfuns},
adamc@188:       nested = nested}
adamc@188:    | bindStr _ _ _ _ = raise Fail "Corify.St.bindStr"
adamc@73: 
adamc@188:  fun lookupStrById ({strs, ...} : t) n =
adamc@188:      case IM.find (strs, n) of
adamc@188:          NONE => raise Fail "Corify.St.lookupStrById"
adamc@188:        | SOME f => dummy f
adamc@177: 
adamc@188:  fun lookupStrByName (m, {current = FNormal {strs, ...}, ...} : t) =
adamc@188:      (case SM.find (strs, m) of
adamc@188:           NONE => raise Fail "Corify.St.lookupStrByName"
adamc@188:         | SOME f => dummy f)
adamc@188:    | lookupStrByName _ = raise Fail "Corify.St.lookupStrByName"
adamc@177: 
adamc@188:  fun bindFunctor ({cons, constructors, vals, strs, funs,
adamc@188:                    current = FNormal {cons = mcons, constructors = mconstructors,
adamc@188:                                       vals = mvals, strs = mstrs, funs = mfuns}, nested} : t)
adamc@188:                  x n xa na str =
adamc@188:      {cons = cons,
adamc@188:       constructors = constructors,
adamc@188:       vals = vals,
adamc@188:       strs = strs,
adamc@188:       funs = IM.insert (funs, n, (xa, na, str)),
adamc@188:       current = FNormal {cons = mcons,
adamc@188:                          constructors = mconstructors,
adamc@188:                          vals = mvals,
adamc@188:                          strs = mstrs,
adamc@188:                          funs = SM.insert (mfuns, x, (xa, na, str))},
adamc@188:       nested = nested}
adamc@188:    | bindFunctor _ _ _ _ _ _ = raise Fail "Corify.St.bindFunctor"
adamc@186: 
adamc@188:  fun lookupFunctorById ({funs, ...} : t) n =
adamc@188:      case IM.find (funs, n) of
adamc@188:          NONE => raise Fail "Corify.St.lookupFunctorById"
adamc@188:        | SOME v => v
adamc@177: 
adamc@188:  fun lookupFunctorByName (m, {current = FNormal {funs, ...}, ...} : t) =
adamc@188:      (case SM.find (funs, m) of
adamc@188:           NONE => raise Fail "Corify.St.lookupFunctorByName"
adamc@188:         | SOME v => v)
adamc@188:    | lookupFunctorByName _ = raise Fail "Corify.St.lookupFunctorByName"
adamc@39: 
adamc@188:  end
adamc@39: 
adamc@39: 
adamc@188:  fun corifyKind (k, loc) =
adamc@188:      case k of
adamc@188:          L.KType => (L'.KType, loc)
adamc@188:        | L.KArrow (k1, k2) => (L'.KArrow (corifyKind k1, corifyKind k2), loc)
adamc@188:        | L.KName => (L'.KName, loc)
adamc@188:        | L.KRecord k => (L'.KRecord (corifyKind k), loc)
adamc@188:        | L.KUnit => (L'.KUnit, loc)
adamc@48: 
adamc@188:  fun corifyCon st (c, loc) =
adamc@188:      case c of
adamc@188:          L.TFun (t1, t2) => (L'.TFun (corifyCon st t1, corifyCon st t2), loc)
adamc@188:        | L.TCFun (x, k, t) => (L'.TCFun (x, corifyKind k, corifyCon st t), loc)
adamc@188:        | L.TRecord c => (L'.TRecord (corifyCon st c), loc)
adamc@39: 
adamc@188:        | L.CRel n => (L'.CRel n, loc)
adamc@188:        | L.CNamed n =>
adamc@188:          (case St.lookupConById st n of
adamc@188:               NONE => (L'.CNamed n, loc)
adamc@188:             | SOME n => (L'.CNamed n, loc))
adamc@188:        | L.CModProj (m, ms, x) =>
adamc@188:          let
adamc@188:              val st = St.lookupStrById st m
adamc@188:              val st = foldl St.lookupStrByName st ms
adamc@188:          in
adamc@188:              case St.lookupConByName st x of
adamc@188:                  St.CNormal n => (L'.CNamed n, loc)
adamc@188:                | St.CFfi m => (L'.CFfi (m, x), loc)
adamc@188:          end
adamc@39: 
adamc@188:        | L.CApp (c1, c2) => (L'.CApp (corifyCon st c1, corifyCon st c2), loc)
adamc@188:        | L.CAbs (x, k, c) => (L'.CAbs (x, corifyKind k, corifyCon st c), loc)
adamc@39: 
adamc@188:        | L.CName s => (L'.CName s, loc)
adamc@46: 
adamc@188:        | L.CRecord (k, xcs) =>
adamc@188:          (L'.CRecord (corifyKind k, map (fn (c1, c2) => (corifyCon st c1, corifyCon st c2)) xcs), loc)
adamc@188:        | L.CConcat (c1, c2) => (L'.CConcat (corifyCon st c1, corifyCon st c2), loc)
adamc@188:        | L.CFold (k1, k2) => (L'.CFold (corifyKind k1, corifyKind k2), loc)
adamc@188:        | L.CUnit => (L'.CUnit, loc)
adamc@46: 
adamc@188:  fun corifyPatCon st pc =
adamc@188:      case pc of
adamc@188:          L.PConVar n => St.lookupConstructorById st n
adamc@188:        | L.PConProj (m1, ms, x) =>
adamc@188:          let
adamc@188:              val st = St.lookupStrById st m1
adamc@188:              val st = foldl St.lookupStrByName st ms
adamc@188:          in
adamc@188:              St.lookupConstructorByName st x
adamc@188:          end
adamc@46: 
adamc@188:  fun corifyPat st (p, loc) =
adamc@188:      case p of
adamc@188:          L.PWild => (L'.PWild, loc)
adamc@188:        | L.PVar (x, t) => (L'.PVar (x, corifyCon st t), loc)
adamc@188:        | L.PPrim p => (L'.PPrim p, loc)
adamc@188:        | L.PCon (dk, pc, po) => (L'.PCon (dk, corifyPatCon st pc, Option.map (corifyPat st) po), loc)
adamc@188:        | L.PRecord xps => (L'.PRecord (map (fn (x, p, t) => (x, corifyPat st p, corifyCon st t)) xps), loc)
adamc@39: 
adamc@188:  fun corifyExp st (e, loc) =
adamc@188:      case e of
adamc@188:          L.EPrim p => (L'.EPrim p, loc)
adamc@188:        | L.ERel n => (L'.ERel n, loc)
adamc@188:        | L.ENamed n =>
adamc@188:          (case St.lookupValById st n of
adamc@188:               NONE => (L'.ENamed n, loc)
adamc@188:             | SOME n => (L'.ENamed n, loc))
adamc@188:        | L.EModProj (m, ms, x) =>
adamc@188:          let
adamc@188:              val st = St.lookupStrById st m
adamc@188:              val st = foldl St.lookupStrByName st ms
adamc@188:          in
adamc@188:              case St.lookupConstructorByNameOpt st x of
adamc@188:                  SOME (pc as L'.PConFfi {mod = m, datatyp, arg, kind, ...}) =>
adamc@188:                  (case arg of
adamc@188:                       NONE => (L'.ECon (kind, pc, NONE), loc)
adamc@188:                     | SOME dom => (L'.EAbs ("x", dom, (L'.CFfi (m, datatyp), loc),
adamc@188:                                             (L'.ECon (kind, pc, SOME (L'.ERel 0, loc)), loc)), loc))
adamc@188:                | _ =>
adamc@188:                  case St.lookupValByName st x of
adamc@188:                      St.ENormal n => (L'.ENamed n, loc)
adamc@188:                    | St.EFfi (m, t) =>
adamc@188:                      case t of
adamc@188:                          (L'.TFun (dom as (L'.TRecord (L'.CRecord (_, []), _), _), ran), _) =>
adamc@188:                          (L'.EAbs ("arg", dom, ran, (L'.EFfiApp (m, x, []), loc)), loc)
adamc@188:                        | t as (L'.TFun _, _) =>
adamc@188:                          let
adamc@188:                              fun getArgs (all as (t, _), args) =
adamc@188:                                  case t of
adamc@188:                                      L'.TFun (dom, ran) => getArgs (ran, dom :: args)
adamc@188:                                    | _ => (all, rev args)
adamc@39: 
adamc@188:                              val (result, args) = getArgs (t, [])
adamc@16: 
adamc@188:                              val (actuals, _) = foldr (fn (_, (actuals, n)) =>
adamc@188:                                                           ((L'.ERel n, loc) :: actuals,
adamc@188:                                                            n + 1)) ([], 0) args
adamc@188:                              val app = (L'.EFfiApp (m, x, actuals), loc)
adamc@188:                              val (abs, _, _) = foldr (fn (t, (abs, ran, n)) =>
adamc@188:                                                          ((L'.EAbs ("arg" ^ Int.toString n,
adamc@188:                                                                     t,
adamc@188:                                                                     ran,
adamc@188:                                                                     abs), loc),
adamc@188:                                                           (L'.TFun (t, ran), loc),
adamc@188:                                                           n - 1)) (app, result, length args - 1) args
adamc@188:                          in
adamc@188:                              abs
adamc@188:                          end
adamc@188:                        | _ => (L'.EFfi (m, x), loc)
adamc@188:          end
adamc@188:        | L.EApp (e1, e2) => (L'.EApp (corifyExp st e1, corifyExp st e2), loc)
adamc@188:        | L.EAbs (x, dom, ran, e1) => (L'.EAbs (x, corifyCon st dom, corifyCon st ran, corifyExp st e1), loc)
adamc@188:        | L.ECApp (e1, c) => (L'.ECApp (corifyExp st e1, corifyCon st c), loc)
adamc@188:        | L.ECAbs (x, k, e1) => (L'.ECAbs (x, corifyKind k, corifyExp st e1), loc)
adamc@16: 
adamc@188:        | L.ERecord xes => (L'.ERecord (map (fn (c, e, t) =>
adamc@188:                                                (corifyCon st c, corifyExp st e, corifyCon st t)) xes), loc)
adamc@188:        | L.EField (e1, c, {field, rest}) => (L'.EField (corifyExp st e1, corifyCon st c,
adamc@188:                                                         {field = corifyCon st field, rest = corifyCon st rest}), loc)
adamc@188:        | L.ECut (e1, c, {field, rest}) => (L'.ECut (corifyExp st e1, corifyCon st c,
adamc@188:                                                     {field = corifyCon st field, rest = corifyCon st rest}), loc)
adamc@188:        | L.EFold k => (L'.EFold (corifyKind k), loc)
adamc@34: 
adamc@188:        | L.ECase (e, pes, {disc, result}) =>
adamc@188:          (L'.ECase (corifyExp st e,
adamc@188:                     map (fn (p, e) => (corifyPat st p, corifyExp st e)) pes,
adamc@188:                     {disc = corifyCon st disc, result = corifyCon st result}),
adamc@188:           loc)
adamc@16: 
adamc@188:        | L.EWrite e => (L'.EWrite (corifyExp st e), loc)
adamc@16: 
adamc@188:  fun corifyDecl ((d, loc : EM.span), st) =
adamc@188:      case d of
adamc@188:          L.DCon (x, n, k, c) =>
adamc@188:          let
adamc@188:              val (st, n) = St.bindCon st x n
adamc@188:          in
adamc@188:              ([(L'.DCon (x, n, corifyKind k, corifyCon st c), loc)], st)
adamc@188:          end
adamc@188:        | L.DDatatype (x, n, xncs) =>
adamc@188:          let
adamc@188:              val (st, n) = St.bindCon st x n
adamc@188:              val (xncs, st) = ListUtil.foldlMap (fn ((x, n, co), st) =>
adamc@188:                                                     let
adamc@188:                                                         val st = St.bindConstructor st x n (L'.PConVar n)
adamc@188:                                                         val st = St.bindConstructorVal st x n
adamc@188:                                                         val co = Option.map (corifyCon st) co
adamc@188:                                                     in
adamc@188:                                                         ((x, n, co), st)
adamc@188:                                                     end) st xncs
adamc@16: 
adamc@188:              val dk = CoreUtil.classifyDatatype xncs
adamc@188:              val t = (L'.CNamed n, loc)
adamc@188:              val dcons = map (fn (x, n, to) =>
adamc@188:                                  let
adamc@188:                                      val (e, t) =
adamc@188:                                          case to of
adamc@188:                                              NONE => ((L'.ECon (dk, L'.PConVar n, NONE), loc), t)
adamc@188:                                            | SOME t' => ((L'.EAbs ("x", t', t,
adamc@188:                                                                    (L'.ECon (dk, L'.PConVar n, SOME (L'.ERel 0, loc)),
adamc@188:                                                                     loc)),
adamc@188:                                                           loc),
adamc@188:                                                          (L'.TFun (t', t), loc))
adamc@188:                                  in
adamc@188:                                      (L'.DVal (x, n, t, e, ""), loc)
adamc@188:                                  end) xncs
adamc@188:          in
adamc@188:              ((L'.DDatatype (x, n, xncs), loc) :: dcons, st)
adamc@188:          end
adamc@188:        | L.DDatatypeImp (x, n, m1, ms, s, xncs) =>
adamc@188:          let
adamc@188:              val (st, n) = St.bindCon st x n
adamc@188:              val c = corifyCon st (L.CModProj (m1, ms, s), loc)
adamc@177: 
adamc@188:              val m = foldl (fn (x, m) => (L.StrProj (m, x), loc)) (L.StrVar m1, loc) ms
adamc@188:              val (_, {inner, ...}) = corifyStr (m, st)
adamc@177: 
adamc@188:              val (xncs, st) = ListUtil.foldlMap (fn ((x, n, co), st) =>
adamc@188:                                                     let
adamc@188:                                                         val n' = St.lookupConstructorByName inner x
adamc@188:                                                         val st = St.bindConstructor st x n n'
adamc@188:                                                         val (st, n) = St.bindVal st x n
adamc@188:                                                         val co = Option.map (corifyCon st) co
adamc@188:                                                     in
adamc@188:                                                         ((x, n, co), st)
adamc@188:                                                     end) st xncs
adamc@49: 
adamc@188:              val cds = map (fn (x, n, co) =>
adamc@188:                                let
adamc@188:                                    val t = case co of
adamc@188:                                                NONE => c
adamc@188:                                              | SOME t' => (L'.TFun (t', c), loc)
adamc@188:                                    val e = corifyExp st (L.EModProj (m1, ms, x), loc)
adamc@188:                                in
adamc@188:                                    (L'.DVal (x, n, t, e, x), loc)
adamc@188:                                end) xncs
adamc@188:          in
adamc@188:              ((L'.DCon (x, n, (L'.KType, loc), c), loc) :: cds, st)
adamc@188:          end
adamc@188:        | L.DVal (x, n, t, e) =>
adamc@188:          let
adamc@188:              val (st, n) = St.bindVal st x n
adamc@188:              val s =
adamc@188:                  if String.isPrefix "wrap_" x then
adamc@188:                      String.extract (x, 5, NONE)
adamc@188:                  else
adamc@188:                      x
adamc@188:          in
adamc@188:              ([(L'.DVal (x, n, corifyCon st t, corifyExp st e, s), loc)], st)
adamc@188:          end
adamc@188:        | L.DValRec vis =>
adamc@188:          let
adamc@188:              val (vis, st) = ListUtil.foldlMap
adamc@188:                                  (fn ((x, n, t, e), st) =>
adamc@188:                                      let
adamc@188:                                          val (st, n) = St.bindVal st x n
adamc@188:                                      in
adamc@188:                                          ((x, n, t, e), st)
adamc@188:                                      end)
adamc@188:                                  st vis
adamc@16: 
adamc@188:              val vis = map
adamc@188:                            (fn (x, n, t, e) =>
adamc@188:                                let
adamc@188:                                    val s =
adamc@188:                                        if String.isPrefix "wrap_" x then
adamc@188:                                            String.extract (x, 5, NONE)
adamc@188:                                        else
adamc@188:                                            x
adamc@188:                                in
adamc@188:                                    (x, n, corifyCon st t, corifyExp st e, s)
adamc@188:                                end)
adamc@188:                            vis
adamc@188:          in
adamc@188:              ([(L'.DValRec vis, loc)], st)
adamc@188:          end
adamc@188:        | L.DSgn _ => ([], st)
adamc@177: 
adamc@188:        | L.DStr (x, n, _, (L.StrFun (xa, na, _, _, str), _)) =>
adamc@188:          ([], St.bindFunctor st x n xa na str)
adamc@177: 
adamc@188:        | L.DStr (x, n, _, str) =>
adamc@188:          let
adamc@188:              val (ds, {inner, outer}) = corifyStr (str, st)
adamc@188:              val st = St.bindStr outer x n inner
adamc@188:          in
adamc@188:              (ds, st)
adamc@188:          end
adamc@16: 
adamc@188:        | L.DFfiStr (m, n, (sgn, _)) =>
adamc@188:          (case sgn of
adamc@188:               L.SgnConst sgis =>
adamc@188:               let
adamc@188:                   val (ds, cmap, conmap, st) =
adamc@188:                       foldl (fn ((sgi, _), (ds, cmap, conmap, st)) =>
adamc@188:                                 case sgi of
adamc@188:                                     L.SgiConAbs (x, n, k) =>
adamc@188:                                     let
adamc@188:                                         val (st, n') = St.bindCon st x n
adamc@188:                                     in
adamc@188:                                         ((L'.DCon (x, n', corifyKind k, (L'.CFfi (m, x), loc)), loc) :: ds,
adamc@188:                                          cmap,
adamc@188:                                          conmap,
adamc@188:                                          st)
adamc@188:                                     end
adamc@188:                                   | L.SgiCon (x, n, k, _) =>
adamc@188:                                     let
adamc@188:                                         val (st, n') = St.bindCon st x n
adamc@188:                                     in
adamc@188:                                         ((L'.DCon (x, n', corifyKind k, (L'.CFfi (m, x), loc)), loc) :: ds,
adamc@188:                                          cmap,
adamc@188:                                          conmap,
adamc@188:                                          st)
adamc@188:                                     end
adamc@177: 
adamc@188:                                   | L.SgiDatatype (x, n, xnts) =>
adamc@188:                                     let
adamc@188:                                         val dk = ExplUtil.classifyDatatype xnts
adamc@188:                                         val (st, n') = St.bindCon st x n
adamc@188:                                         val (xnts, (ds', st, cmap, conmap)) =
adamc@188:                                             ListUtil.foldlMap
adamc@188:                                                 (fn ((x', n, to), (ds', st, cmap, conmap)) =>
adamc@188:                                                     let
adamc@188:                                                         val dt = (L'.CNamed n', loc)
adamc@163: 
adamc@188:                                                         val to = Option.map (corifyCon st) to
adamc@177: 
adamc@188:                                                         val pc = L'.PConFfi {mod = m,
adamc@188:                                                                              datatyp = x,
adamc@188:                                                                              con = x',
adamc@188:                                                                              arg = to,
adamc@188:                                                                              kind = dk}
adamc@130: 
adamc@188:                                                         val (cmap, d) =
adamc@188:                                                             case to of
adamc@188:                                                                 NONE => (SM.insert (cmap, x', dt),
adamc@188:                                                                          (L'.DVal (x', n, dt,
adamc@188:                                                                                    (L'.ECon (dk, pc, NONE), loc),
adamc@188:                                                                                    ""), loc))
adamc@188:                                                               | SOME t =>
adamc@188:                                                                 let
adamc@188:                                                                     val tf = (L'.TFun (t, dt), loc)
adamc@188:                                                                     val d = (L'.DVal (x', n, tf,
adamc@188:                                                                                       (L'.EAbs ("x", t, tf,
adamc@188:                                                                                                 (L'.ECon (dk, pc,
adamc@188:                                                                                                           SOME (L'.ERel 0,
adamc@186:                                                                                                                loc)),
adamc@186:                                                                                                 loc)), loc), ""), loc)
adamc@185:                                                                in
adamc@186:                                                                    (SM.insert (cmap, x', tf), d)
adamc@185:                                                                end
adamc@185: 
adamc@186:                                                        val st = St.bindConstructor st x' n pc
adamc@186:                                                        (*val st = St.bindConstructorVal st x' n*)
adamc@186: 
adamc@188:                                                        val conmap = SM.insert (conmap, x', (x, to, dk))
adamc@185:                                                    in
adamc@185:                                                        ((x', n, to),
adamc@186:                                                         (d :: ds', st, cmap, conmap))
adamc@186:                                                    end) ([], st, cmap, conmap) xnts
adamc@185:                                    in
adamc@186:                                        (ds' @ (L'.DDatatype (x, n', xnts), loc) :: ds,
adamc@185:                                         cmap,
adamc@185:                                         conmap,
adamc@49:                                         st)
adamc@49:                                    end
adamc@49: 
adamc@49:                                  | L.SgiVal (x, _, c) =>
adamc@49:                                    (ds,
adamc@49:                                     SM.insert (cmap, x, corifyCon st c),
adamc@185:                                     conmap,
adamc@49:                                     st)
adamc@185:                                  | _ => (ds, cmap, conmap, st)) ([], SM.empty, SM.empty, st) sgis
adamc@49: 
adamc@185:                  val st = St.bindStr st m n (St.ffi m cmap conmap)
adamc@49:              in
adamc@49:                  (rev ds, st)
adamc@49:              end
adamc@49:            | _ => raise Fail "Non-const signature for FFI structure")
adamc@48: 
adamc@109:       | L.DExport (en, sgn, str) =>
adamc@109:         (case #1 sgn of
adamc@109:              L.SgnConst sgis =>
adamc@109:              let
adamc@109:                  fun pathify (str, _) =
adamc@109:                      case str of
adamc@109:                          L.StrVar m => SOME (m, [])
adamc@109:                        | L.StrProj (str, s) =>
adamc@109:                          Option.map (fn (m, ms) => (m, ms @ [s])) (pathify str)
adamc@109:                        | _ => NONE
adamc@109:              in
adamc@109:                  case pathify str of
adamc@109:                      NONE => (ErrorMsg.errorAt loc "Structure is too fancy to export";
adamc@109:                               ([], st))
adamc@109:                    | SOME (m, ms) =>
adamc@109:                      let
adamc@109:                          fun wrapSgi ((sgi, _), (wds, eds))  =
adamc@109:                              case sgi of
adamc@109:                                  L.SgiVal (s, _, t as (L.TFun (dom, ran), _)) =>
adamc@109:                                  (case (#1 dom, #1 ran) of
adamc@147:                                       (L.TRecord (L.CRecord (_, []), _),
adamc@139:                                        L.CApp
adamc@139:                                            ((L.CApp
adamc@139:                                                  ((L.CApp ((L.CModProj (_, [], "xml"), _),
adamc@139:                                                            (L.CRecord (_, [((L.CName "Html", _),
adamc@139:                                                                             _)]), _)), _), _), _), _)) =>
adamc@109:                                       let
adamc@109:                                           val ran = (L.TRecord (L.CRecord ((L.KType, loc), []), loc), loc)
adamc@109:                                           val e = (L.EModProj (m, ms, s), loc)
adamc@109:                                           val e = (L.EAbs ("vs", dom, ran,
adamc@109:                                                            (L.EWrite (L.EApp (e, (L.ERel 0, loc)), loc), loc)), loc)
adamc@109:                                       in
adamc@109:                                           ((L.DVal ("wrap_" ^ s, 0,
adamc@109:                                                     (L.TFun (dom, ran), loc),
adamc@109:                                                     e), loc) :: wds,
adamc@109:                                            (fn st =>
adamc@109:                                                case #1 (corifyExp st (L.EModProj (en, [], "wrap_" ^ s), loc)) of
adamc@144:                                                    L'.ENamed n => (L'.DExport (L'.Link, n), loc)
adamc@109:                                                  | _ => raise Fail "Corify: Value to export didn't corify properly")
adamc@109:                                            :: eds)
adamc@109:                                       end
adamc@109:                                     | _ => (wds, eds))
adamc@109:                                | _ => (wds, eds)
adamc@102: 
adamc@109:                          val (wds, eds) = foldl wrapSgi ([], []) sgis
adamc@109:                          val wrapper = (L.StrConst wds, loc)
adamc@109:                          val (ds, {inner, outer}) = corifyStr (wrapper, st)
adamc@109:                          val st = St.bindStr outer "wrapper" en inner
adamc@109:                          
adamc@109:                          val ds = ds @ map (fn f => f st) eds
adamc@109:                      in
adamc@109:                          (ds, st)
adamc@109:                      end
adamc@109:              end
adamc@109:            | _ => raise Fail "Non-const signature for 'export'")
adamc@48: 
adamc@39: and corifyStr ((str, _), st) =
adamc@39:     case str of
adamc@39:         L.StrConst ds =>
adamc@39:         let
adamc@39:             val st = St.enter st
adamc@39:             val (ds, st) = ListUtil.foldlMapConcat corifyDecl st ds
adamc@39:         in
adamc@39:             (ds, St.leave st)
adamc@39:         end
adamc@39:       | L.StrVar n => ([], {inner = St.lookupStrById st n, outer = st})
adamc@39:       | L.StrProj (str, x) =>
adamc@39:         let
adamc@39:             val (ds, {inner, outer}) = corifyStr (str, st)
adamc@39:         in
adamc@39:             (ds, {inner = St.lookupStrByName (x, inner), outer = outer})
adamc@39:         end
adamc@46:       | L.StrFun _ => raise Fail "Corify of nested functor definition"
adamc@46:       | L.StrApp (str1, str2) =>
adamc@46:         let
adamc@46:             fun unwind' (str, _) =
adamc@46:                 case str of
adamc@46:                     L.StrVar n => St.lookupStrById st n
adamc@46:                   | L.StrProj (str, x) => St.lookupStrByName (x, unwind' str)
adamc@46:                   | _ => raise Fail "Corify of fancy functor application [1]"
adamc@46: 
adamc@46:             fun unwind (str, _) =
adamc@46:                 case str of
adamc@46:                     L.StrVar n => St.lookupFunctorById st n
adamc@46:                   | L.StrProj (str, x) => St.lookupFunctorByName (x, unwind' str)
adamc@46:                   | _ => raise Fail "Corify of fancy functor application [2]"
adamc@46: 
adamc@146:             val (xa, na, body) = unwind str1
adamc@46: 
adamc@146:             val (ds1, {inner = inner', outer}) = corifyStr (str2, st)
adamc@146:             val (ds2, {inner, outer}) = corifyStr (body, St.bindStr outer xa na inner')
adamc@46:         in
adamc@146:             (ds1 @ ds2, {inner = St.bindStr inner xa na inner', outer = outer})
adamc@46:         end
adamc@31: 
adamc@39: fun maxName ds = foldl (fn ((d, _), n) =>
adamc@39:                            case d of
adamc@39:                                L.DCon (_, n', _, _) => Int.max (n, n')
adamc@162:                              | L.DDatatype (_, n', _) => Int.max (n, n')
adamc@162:                              | L.DDatatypeImp (_, n', _, _, _, _) => Int.max (n, n')
adamc@124:                              | L.DVal (_, n', _, _) => Int.max (n, n')
adamc@124:                              | L.DValRec vis => foldl (fn ((_, n', _, _), n) => Int.max (n, n)) n vis
adamc@39:                              | L.DSgn (_, n', _) => Int.max (n, n')
adamc@48:                              | L.DStr (_, n', _, str) => Int.max (n, Int.max (n', maxNameStr str))
adamc@100:                              | L.DFfiStr (_, n', _) => Int.max (n, n')
adamc@109:                              | L.DExport _ => n)
adamc@39:                  0 ds
adamc@39: 
adamc@39: and maxNameStr (str, _) =
adamc@39:     case str of
adamc@39:         L.StrConst ds => maxName ds
adamc@39:       | L.StrVar n => n
adamc@39:       | L.StrProj (str, _) => maxNameStr str
adamc@45:       | L.StrFun (_, _, _, _, str) => maxNameStr str
adamc@45:       | L.StrApp (str1, str2) => Int.max (maxNameStr str1, maxNameStr str2)
adamc@39: 
adamc@39: fun corify ds =
adamc@39:     let
adamc@39:         val () = reset (maxName ds + 1)
adamc@146: 
adamc@39:         val (ds, _) = ListUtil.foldlMapConcat corifyDecl St.empty ds
adamc@39:     in
adamc@39:         ds
adamc@39:     end
adamc@16: 
adamc@16: end