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: (* Pretty-printing monomorphic Laconic/Web *)
adamc@25: 
adamc@25: structure MonoPrint :> MONO_PRINT = struct
adamc@25: 
adamc@25: open Print.PD
adamc@25: open Print
adamc@25: 
adamc@25: open Mono
adamc@25: 
adamc@25: structure E = MonoEnv
adamc@25: 
adamc@25: val debug = ref false
adamc@25: 
adamc@25: fun p_typ' par env (t, _) =
adamc@25:     case t of
adamc@25:         TFun (t1, t2) => parenIf par (box [p_typ' true env t1,
adamc@25:                                            space,
adamc@25:                                            string "->",
adamc@25:                                            space,
adamc@25:                                            p_typ env t2])
adamc@25:       | TRecord xcs => box [string "{",
adamc@25:                             p_list (fn (x, t) =>
adamc@25:                                        box [string x,
adamc@25:                                             space,
adamc@25:                                             string ":",
adamc@25:                                             space,
adamc@25:                                             p_typ env t]) xcs,
adamc@25:                             string "}"]
adamc@25:       | TNamed n =>
adamc@25:         if !debug then
adamc@25:             string (#1 (E.lookupTNamed env n) ^ "__" ^ Int.toString n)
adamc@25:         else
adamc@25:             string (#1 (E.lookupTNamed env n))
adamc@25: 
adamc@25: and p_typ env = p_typ' false env
adamc@25: 
adamc@25: fun p_exp' par env (e, _) =
adamc@25:     case e of
adamc@25:         EPrim p => Prim.p_t p
adamc@25:       | ERel n =>
adamc@25:         if !debug then
adamc@25:             string (#1 (E.lookupERel env n) ^ "_" ^ Int.toString n)
adamc@25:         else
adamc@25:             string (#1 (E.lookupERel env n))
adamc@25:       | ENamed n =>
adamc@25:         if !debug then
adamc@25:             string (#1 (E.lookupENamed env n) ^ "__" ^ Int.toString n)
adamc@25:         else
adamc@25:             string (#1 (E.lookupENamed env n))
adamc@25:       | EApp (e1, e2) => parenIf par (box [p_exp env e1,
adamc@25:                                            space,
adamc@25:                                            p_exp' true env e2])
adamc@25:       | EAbs (x, t, e) => parenIf par (box [string "fn",
adamc@25:                                             space,
adamc@25:                                             string x,
adamc@25:                                             space,
adamc@25:                                             string ":",
adamc@25:                                             space,
adamc@25:                                             p_typ env t,
adamc@25:                                             space,
adamc@25:                                             string "=>",
adamc@25:                                             space,
adamc@25:                                             p_exp (E.pushERel env x t) e])
adamc@25: 
adamc@25:       | ERecord xes => box [string "{",
adamc@25:                             p_list (fn (x, e) =>
adamc@25:                                        box [string x,
adamc@25:                                             space,
adamc@25:                                             string "=",
adamc@25:                                             space,
adamc@25:                                             p_exp env e]) xes,
adamc@25:                             string "}"]
adamc@25:       | EField (e, x) =>
adamc@25:         box [p_exp' true env e,
adamc@25:              string ".",
adamc@25:              string x]
adamc@25: 
adamc@25: and p_exp env = p_exp' false env
adamc@25: 
adamc@25: fun p_decl env ((d, _) : decl) =
adamc@25:     case d of
adamc@25:         DVal (x, n, t, e) =>
adamc@25:         let
adamc@25:             val xp = if !debug then
adamc@25:                          box [string x,
adamc@25:                               string "__",
adamc@25:                               string (Int.toString n)]
adamc@25:                      else
adamc@25:                          string x        
adamc@25:         in
adamc@25:             box [string "val",
adamc@25:                  space,
adamc@25:                  xp,
adamc@25:                  space,
adamc@25:                  string ":",
adamc@25:                  space,
adamc@25:                  p_typ env t,
adamc@25:                  space,
adamc@25:                  string "=",
adamc@25:                  space,
adamc@25:                  p_exp env e]
adamc@25:         end
adamc@25: 
adamc@25: fun p_file env file =
adamc@25:     let
adamc@25:         val (_, pds) = ListUtil.mapfoldl (fn (d, env) =>
adamc@25:                                              (E.declBinds env d,
adamc@25:                                               p_decl env d))
adamc@25:                              env file
adamc@25:     in
adamc@25:         p_list_sep newline (fn x => x) pds
adamc@25:     end
adamc@25: 
adamc@25: end