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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 Laconic/Web *)
structure LaconicPrint :> LACONIC_PRINT = struct
open Print.PD
open Print
open Laconic
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 "}"]
and p_kind k = p_kind' false k
fun p_explicitness e =
case e of
Explicit => string "::"
| Implicit => string ":::"
fun p_con' par (c, _) =
case c of
CAnnot (c, k) => box [string "(",
p_con c,
space,
string "::",
space,
p_kind k,
string ")"]
| TFun (t1, t2) => parenIf par (box [p_con' true t1,
space,
string "->",
space,
p_con t2])
| TCFun (e, x, k, c) => parenIf par (box [string x,
space,
p_explicitness e,
space,
p_kind k,
space,
string "->",
space,
p_con c])
| TRecord (CRecord xcs, _) => box [string "{",
p_list (fn (x, c) =>
box [p_con x,
space,
string ":",
space,
p_con c]) xcs,
string "}"]
| TRecord c => box [string "$",
p_con' true c]
| CVar s => string s
| CApp (c1, c2) => parenIf par (box [p_con c1,
space,
p_con' true 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 c])
| CName s => box [string "#", string s]
| CRecord xcs => box [string "[",
p_list (fn (x, c) =>
box [p_con x,
space,
string "=",
space,
p_con c]) xcs,
string "]"]
| CConcat (c1, c2) => parenIf par (box [p_con' true c1,
space,
string "++",
space,
p_con c2])
and p_con c = p_con' false c
fun p_decl ((d, _) : decl) =
case d of
DCon (x, NONE, c) => box [string "con",
space,
string x,
space,
string "=",
space,
p_con c]
| DCon (x, SOME k, c) => box [string "con",
space,
string x,
space,
string "::",
space,
p_kind k,
space,
string "=",
space,
p_con c]
val p_file = p_list_sep newline p_decl
end
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