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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.
*)
(* Pretty-printing elaborated Laconic/Web *)
structure ElabPrint :> ELAB_PRINT = struct
open Print.PD
open Print
open Elab
structure E = ElabEnv
fun p_kind' par (k, _) =
case k of
KType => string "Type"
| KArrow (k1, k2) => parenIf par (box [p_kind' true k1,
space,
string "->",
space,
p_kind k2])
| KName => string "Name"
| KRecord k => box [string "{", p_kind k, string "}"]
| KError => string "<ERROR>"
| KUnif (_, ref (SOME k)) => p_kind' par k
| KUnif (s, _) => string ("<UNIF:" ^ s ^ ">")
and p_kind k = p_kind' false k
fun p_explicitness e =
case e of
Explicit => string "::"
| Implicit => string ":::"
fun p_con' par env (c, _) =
case c of
TFun (t1, t2) => parenIf par (box [p_con' true env t1,
space,
string "->",
space,
p_con env t2])
| TCFun (e, x, k, c) => parenIf par (box [string x,
space,
p_explicitness e,
space,
p_kind k,
space,
string "->",
space,
p_con (E.pushCRel env x k) c])
| TRecord (CRecord (_, xcs), _) => box [string "{",
p_list (fn (x, c) =>
box [p_con env x,
space,
string ":",
space,
p_con env c]) xcs,
string "}"]
| TRecord c => box [string "$",
p_con' true env c]
| CRel n => string (#1 (E.lookupCRel env n) ^ "_" ^ Int.toString n)
| CNamed n => string (#1 (E.lookupCNamed env n) ^ "__" ^ Int.toString n)
| CApp (c1, c2) => parenIf par (box [p_con env c1,
space,
p_con' true env c2])
| CAbs (e, x, k, c) => parenIf par (box [string "fn",
space,
string x,
space,
p_explicitness e,
space,
p_kind k,
space,
string "=>",
space,
p_con (E.pushCRel env x k) c])
| CName s => box [string "#", string s]
| CRecord (k, xcs) => parenIf par (box [string "[",
p_list (fn (x, c) =>
box [p_con env x,
space,
string "=",
space,
p_con env c]) xcs,
string "]::",
p_kind k])
| CConcat (c1, c2) => parenIf par (box [p_con' true env c1,
space,
string "++",
space,
p_con env c2])
| CError => string "<ERROR>"
| CUnif (_, ref (SOME c)) => p_con' par env c
| CUnif (s, _) => string ("<UNIF:" ^ s ^ ">")
and p_con env = p_con' false env
fun p_decl env ((d, _) : decl) =
case d of
DCon (x, k, c) => box [string "con",
space,
string x,
space,
string "::",
space,
p_kind k,
space,
string "=",
space,
p_con env c]
fun p_file env file =
let
val (_, pds) = foldr (fn (d, (env, pds)) =>
(ElabUtil.declBinds env d,
p_decl env d :: pds))
(env, []) file
in
p_list_sep newline (fn x => x) pds
end
end
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