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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 monomorphic Ur/Web *)
structure MonoPrint :> MONO_PRINT = struct
open Print.PD
open Print
open Mono
structure E = MonoEnv
val debug = ref false
val dummyt = (TRecord [], ErrorMsg.dummySpan)
fun p_typ' par env (t, _) =
case t of
TFun (t1, t2) => parenIf par (box [p_typ' true env t1,
space,
string "->",
space,
p_typ env t2])
| TRecord xcs => box [string "{",
p_list (fn (x, t) =>
box [string x,
space,
string ":",
space,
p_typ env t]) xcs,
string "}"]
| TDatatype (n, _) =>
((if !debug then
string (#1 (E.lookupDatatype env n) ^ "__" ^ Int.toString n)
else
string (#1 (E.lookupDatatype env n)))
handle E.UnboundNamed _ => string ("UNBOUND_DATATYPE_" ^ Int.toString n))
| TFfi (m, x) => box [string "FFI(", string m, string ".", string x, string ")"]
| TOption t => box [string "option(",
p_typ env t,
string ")"]
| TSignal t => box [string "signal(",
p_typ env t,
string ")"]
and p_typ env = p_typ' false env
fun p_enamed env n =
(if !debug then
string (#1 (E.lookupENamed env n) ^ "__" ^ Int.toString n)
else
string (#1 (E.lookupENamed env n)))
handle E.UnboundNamed _ => string ("UNBOUNDN_" ^ Int.toString n)
fun p_con_named env n =
(if !debug then
string (#1 (E.lookupConstructor env n) ^ "__" ^ Int.toString n)
else
string (#1 (E.lookupConstructor env n)))
handle E.UnboundNamed _ => string ("CONSTRUCTOR_" ^ Int.toString n)
fun p_patCon env pc =
case pc of
PConVar n => p_con_named env n
| PConFfi {mod = m, con, ...} => box [string "FFIC(",
string m,
string ".",
string con,
string ")"]
fun p_pat' par env (p, _) =
case p of
PWild => string "_"
| PVar (s, _) => string s
| PPrim p => Prim.p_t p
| PCon (_, n, NONE) => p_patCon env n
| PCon (_, n, SOME p) => parenIf par (box [p_patCon env n,
space,
p_pat' true env p])
| PRecord xps =>
box [string "{",
p_list_sep (box [string ",", space]) (fn (x, p, _) =>
box [string x,
space,
string "=",
space,
p_pat env p]) xps,
string "}"]
| PNone _ => string "None"
| PSome (_, p) => box [string "Some",
space,
p_pat' true env p]
and p_pat x = p_pat' false x
fun p_exp' par env (e, _) =
case e of
EPrim p => Prim.p_t p
| ERel n =>
((if !debug then
string (#1 (E.lookupERel env n) ^ "_" ^ Int.toString n)
else
string (#1 (E.lookupERel env n)))
handle E.UnboundRel _ => string ("UNBOUND_" ^ Int.toString n))
| ENamed n => p_enamed env n
| ECon (_, pc, NONE) => p_patCon env pc
| ECon (_, pc, SOME e) => parenIf par (box [p_patCon env pc,
space,
p_exp' true env e])
| ENone _ => string "None"
| ESome (_, e) => parenIf par (box [string "Some",
space,
p_exp' true env e])
| EFfi (m, x) => box [string "FFI(", string m, string ".", string x, string ")"]
| EFfiApp (m, x, es) => box [string "FFI(",
string m,
string ".",
string x,
string "(",
p_list (p_exp env) es,
string "))"]
| EApp (e1, e2) => parenIf par (box [p_exp env e1,
space,
p_exp' true env e2])
| EAbs (x, t, _, e) => parenIf true (box [string "fn",
space,
string x,
space,
string ":",
space,
p_typ env t,
space,
string "=>",
space,
p_exp (E.pushERel env x t NONE) e])
| EUnop (s, e) => parenIf true (box [string s,
space,
p_exp' true env e])
| EBinop (s, e1, e2) => parenIf true (box [p_exp' true env e1,
space,
string s,
space,
p_exp' true env e2])
| ERecord xes => box [string "{",
p_list (fn (x, e, _) =>
box [string x,
space,
string "=",
space,
p_exp env e]) xes,
string "}"]
| EField (e, x) =>
box [p_exp' true env e,
string ".",
string x]
| ECase (e, pes, _) => parenIf true (box [string "case",
space,
p_exp env e,
space,
string "of",
space,
p_list_sep (box [space, string "|", space])
(fn (p, e) => box [p_pat env p,
space,
string "=>",
space,
p_exp (E.patBinds env p) e]) pes])
| EError (e, t) => box [string "(error",
space,
p_exp env e,
space,
string ":",
space,
p_typ env t,
string ")"]
| EStrcat (e1, e2) => parenIf par (box [p_exp' true env e1,
space,
string "^",
space,
p_exp env e2])
| EWrite e => box [string "write(",
p_exp env e,
string ")"]
| ESeq (e1, e2) => box [p_exp env e1,
string ";",
space,
p_exp env e2]
| ELet (x, t, e1, e2) => box [string "(let",
space,
string x,
space,
string ":",
space,
p_typ env t,
space,
string "=",
space,
string "(",
p_exp env e1,
string ")",
space,
string "in",
space,
string "(",
p_exp (E.pushERel env x t NONE) e2,
string "))"]
| EClosure (n, es) => box [string "CLOSURE(",
p_enamed env n,
p_list_sep (string "") (fn e => box [string ", ",
p_exp env e]) es,
string ")"]
| EQuery {exps, tables, state, query, body, initial} =>
box [string "query[",
p_list (fn (x, t) => box [string x, space, string ":", space, p_typ env t]) exps,
string "] [",
p_list (fn (x, xts) => box [string x,
space,
string ":",
space,
string "{",
p_list (fn (x, t) => box [string x, space, string ":", space, p_typ env t]) xts,
string "}"]) tables,
string "] [",
p_typ env state,
string "]",
space,
p_exp env query,
space,
string "initial",
space,
p_exp env initial,
space,
string "in",
space,
p_exp (E.pushERel (E.pushERel env "r" dummyt NONE) "acc" dummyt NONE) body]
| EDml e => box [string "dml(",
p_exp env e,
string ")"]
| ENextval e => box [string "nextval(",
p_exp env e,
string ")"]
| EUnurlify (e, _) => box [string "unurlify(",
p_exp env e,
string ")"]
| EJavaScript (_, e) => box [string "JavaScript(",
p_exp env e,
string ")"]
| ESignalReturn e => box [string "Return(",
p_exp env e,
string ")"]
| ESignalBind (e1, e2) => box [string "Bind(",
p_exp env e1,
string ",",
space,
p_exp env e2,
string ")"]
| ESignalSource e => box [string "Source(",
p_exp env e,
string ")"]
and p_exp env = p_exp' false env
fun p_vali env (x, n, t, e, s) =
let
val xp = if !debug then
box [string x,
string "__",
string (Int.toString n)]
else
string x
in
box [xp,
space,
string "as",
space,
string s,
space,
string ":",
space,
p_typ env t,
space,
string "=",
space,
p_exp env e]
end
fun p_datatype env (x, n, cons) =
let
val env = E.pushDatatype env x n cons
in
box [string "datatype",
space,
string x,
space,
string "=",
space,
p_list_sep (box [space, string "|", space])
(fn (x, n, NONE) => if !debug then (string (x ^ "__" ^ Int.toString n))
else string x
| (x, _, SOME t) => box [if !debug then (string (x ^ "__" ^ Int.toString n))
else string x, space, string "of", space, p_typ env t])
cons]
end
fun p_decl env (dAll as (d, _) : decl) =
case d of
DDatatype x => p_datatype env x
| DVal vi => box [string "val",
space,
p_vali env vi]
| DValRec vis =>
let
val env = E.declBinds env dAll
in
box [string "val",
space,
string "rec",
space,
p_list_sep (box [newline, string "and", space]) (p_vali env) vis]
end
| DExport (ek, s, n, ts) => box [string "export",
space,
CorePrint.p_export_kind ek,
space,
p_enamed env n,
space,
string "as",
space,
string s,
p_list_sep (string "") (fn t => box [space,
string "(",
p_typ env t,
string ")"]) ts]
| DTable (s, xts) => box [string "(* SQL table ",
string s,
space,
string ":",
space,
p_list (fn (x, t) => box [string x,
space,
string ":",
space,
p_typ env t]) xts,
space,
string "*)"]
| DSequence s => box [string "(* SQL sequence ",
string s,
string "*)"]
| DDatabase s => box [string "database",
space,
string s]
| DJavaScript s => box [string "JavaScript(",
string s,
string ")"]
fun p_file env file =
let
val (pds, _) = ListUtil.foldlMap (fn (d, env) =>
(p_decl env d,
E.declBinds env d))
env file
in
p_list_sep newline (fn x => x) pds
end
end
|
