Remove a redundant parameter for mkTupleTy (the arity)
[ghc.git] / utils / genprimopcode / Main.hs
1 {-# OPTIONS -cpp #-}
2 ------------------------------------------------------------------
3 -- A primop-table mangling program --
4 ------------------------------------------------------------------
5
6 module Main where
7
8 import Parser
9 import Syntax
10
11 import Char
12 import List
13 import System ( getArgs )
14 import Maybe ( catMaybes )
15
16 main :: IO ()
17 main = getArgs >>= \args ->
18 if length args /= 1 || head args `notElem` known_args
19 then error ("usage: genprimopcode command < primops.txt > ...\n"
20 ++ " where command is one of\n"
21 ++ unlines (map (" "++) known_args)
22 )
23 else
24 do s <- getContents
25 case parse s of
26 Left err -> error ("parse error at " ++ (show err))
27 Right p_o_specs@(Info _ entries)
28 -> seq (sanityTop p_o_specs) (
29 case head args of
30
31 "--data-decl"
32 -> putStr (gen_data_decl p_o_specs)
33
34 "--has-side-effects"
35 -> putStr (gen_switch_from_attribs
36 "has_side_effects"
37 "primOpHasSideEffects" p_o_specs)
38
39 "--out-of-line"
40 -> putStr (gen_switch_from_attribs
41 "out_of_line"
42 "primOpOutOfLine" p_o_specs)
43
44 "--commutable"
45 -> putStr (gen_switch_from_attribs
46 "commutable"
47 "commutableOp" p_o_specs)
48
49 "--needs-wrapper"
50 -> putStr (gen_switch_from_attribs
51 "needs_wrapper"
52 "primOpNeedsWrapper" p_o_specs)
53
54 "--can-fail"
55 -> putStr (gen_switch_from_attribs
56 "can_fail"
57 "primOpCanFail" p_o_specs)
58
59 "--strictness"
60 -> putStr (gen_switch_from_attribs
61 "strictness"
62 "primOpStrictness" p_o_specs)
63
64 "--primop-primop-info"
65 -> putStr (gen_primop_info p_o_specs)
66
67 "--primop-tag"
68 -> putStr (gen_primop_tag p_o_specs)
69
70 "--primop-list"
71 -> putStr (gen_primop_list p_o_specs)
72
73 "--make-haskell-wrappers"
74 -> putStr (gen_wrappers p_o_specs)
75
76 "--make-haskell-source"
77 -> putStr (gen_hs_source p_o_specs)
78
79 "--make-ext-core-source"
80 -> putStr (gen_ext_core_source entries)
81
82 "--make-latex-doc"
83 -> putStr (gen_latex_doc p_o_specs)
84
85 _ -> error "Should not happen, known_args out of sync?"
86 )
87
88 known_args :: [String]
89 known_args
90 = [ "--data-decl",
91 "--has-side-effects",
92 "--out-of-line",
93 "--commutable",
94 "--needs-wrapper",
95 "--can-fail",
96 "--strictness",
97 "--primop-primop-info",
98 "--primop-tag",
99 "--primop-list",
100 "--make-haskell-wrappers",
101 "--make-haskell-source",
102 "--make-ext-core-source",
103 "--make-latex-doc"
104 ]
105
106 ------------------------------------------------------------------
107 -- Code generators -----------------------------------------------
108 ------------------------------------------------------------------
109
110 gen_hs_source :: Info -> String
111 gen_hs_source (Info defaults entries) =
112 "{-\n"
113 ++ "This is a generated file (generated by genprimopcode).\n"
114 ++ "It is not code to actually be used. Its only purpose is to be\n"
115 ++ "consumed by haddock.\n"
116 ++ "-}\n"
117 ++ "\n"
118 ++ "-----------------------------------------------------------------------------\n"
119 ++ "-- |\n"
120 ++ "-- Module : GHC.Prim\n"
121 ++ "-- \n"
122 ++ "-- Maintainer : cvs-ghc@haskell.org\n"
123 ++ "-- Stability : internal\n"
124 ++ "-- Portability : non-portable (GHC extensions)\n"
125 ++ "--\n"
126 ++ "-- GHC\'s primitive types and operations.\n"
127 ++ "-- Use GHC.Exts from the base package instead of importing this\n"
128 ++ "-- module directly.\n"
129 ++ "--\n"
130 ++ "-----------------------------------------------------------------------------\n"
131 ++ "module GHC.Prim (\n"
132 ++ unlines (map (("\t" ++) . hdr) entries)
133 ++ ") where\n"
134 ++ "\n"
135 ++ "import GHC.Bool\n"
136 ++ "\n"
137 ++ "{-\n"
138 ++ unlines (map opt defaults)
139 ++ "-}\n"
140 ++ unlines (concatMap ent entries) ++ "\n\n\n"
141 where opt (OptionFalse n) = n ++ " = False"
142 opt (OptionTrue n) = n ++ " = True"
143 opt (OptionString n v) = n ++ " = { " ++ v ++ "}"
144
145 hdr s@(Section {}) = sec s
146 hdr (PrimOpSpec { name = n }) = wrapOp n ++ ","
147 hdr (PseudoOpSpec { name = n }) = wrapOp n ++ ","
148 hdr (PrimTypeSpec { ty = TyApp n _ }) = wrapTy n ++ ","
149 hdr (PrimTypeSpec {}) = error "Illegal type spec"
150
151 ent (Section {}) = []
152 ent o@(PrimOpSpec {}) = spec o
153 ent o@(PrimTypeSpec {}) = spec o
154 ent o@(PseudoOpSpec {}) = spec o
155
156 sec s = "\n-- * " ++ escape (title s) ++ "\n"
157 ++ (unlines $ map ("-- " ++ ) $ lines $ unlatex $ escape $ "|" ++ desc s) ++ "\n"
158
159 spec o = comm : decls
160 where decls = case o of
161 PrimOpSpec { name = n, ty = t } ->
162 [ wrapOp n ++ " :: " ++ pprTy t,
163 wrapOp n ++ " = let x = x in x" ]
164 PseudoOpSpec { name = n, ty = t } ->
165 [ wrapOp n ++ " :: " ++ pprTy t,
166 wrapOp n ++ " = let x = x in x" ]
167 PrimTypeSpec { ty = t } ->
168 [ "data " ++ pprTy t ]
169 Section { } -> []
170
171 comm = case (desc o) of
172 [] -> ""
173 d -> "\n" ++ (unlines $ map ("-- " ++ ) $ lines $ unlatex $ escape $ "|" ++ d)
174
175 wrapOp nm | isAlpha (head nm) = nm
176 | otherwise = "(" ++ nm ++ ")"
177 wrapTy nm | isAlpha (head nm) = nm
178 | otherwise = "(" ++ nm ++ ")"
179 unlatex s = case s of
180 '\\':'t':'e':'x':'t':'t':'t':'{':cs -> markup "@" "@" cs
181 '{':'\\':'t':'t':cs -> markup "@" "@" cs
182 '{':'\\':'i':'t':cs -> markup "/" "/" cs
183 c : cs -> c : unlatex cs
184 [] -> []
185 markup s t xs = s ++ mk (dropWhile isSpace xs)
186 where mk "" = t
187 mk ('\n':cs) = ' ' : mk cs
188 mk ('}':cs) = t ++ unlatex cs
189 mk (c:cs) = c : mk cs
190 escape = concatMap (\c -> if c `elem` special then '\\':c:[] else c:[])
191 where special = "/'`\"@<"
192
193 pprTy :: Ty -> String
194 pprTy = pty
195 where
196 pty (TyF t1 t2) = pbty t1 ++ " -> " ++ pty t2
197 pty t = pbty t
198 pbty (TyApp tc ts) = tc ++ concat (map (' ' :) (map paty ts))
199 pbty (TyUTup ts) = "(# "
200 ++ concat (intersperse "," (map pty ts))
201 ++ " #)"
202 pbty t = paty t
203
204 paty (TyVar tv) = tv
205 paty t = "(" ++ pty t ++ ")"
206 --
207 -- Generates the type environment that the stand-alone External Core tools use.
208 gen_ext_core_source :: [Entry] -> String
209 gen_ext_core_source entries =
210 "-----------------------------------------------------------------------\n"
211 ++ "-- This module is automatically generated by the GHC utility\n"
212 ++ "-- \"genprimopcode\". Do not edit!\n"
213 ++ "-----------------------------------------------------------------------\n"
214 ++ "module Language.Core.PrimEnv(primTcs, primVals, intLitTypes, ratLitTypes,"
215 ++ "\n charLitTypes, stringLitTypes) where\nimport Language.Core.Core"
216 ++ "\nimport Language.Core.Encoding\n\n"
217 ++ "primTcs :: [(Tcon, Kind)]\n"
218 ++ "primTcs = [\n"
219 ++ printList tcEnt entries
220 ++ " ]\n"
221 ++ "primVals :: [(Var, Ty)]\n"
222 ++ "primVals = [\n"
223 ++ printList valEnt entries
224 ++ "]\n"
225 ++ "intLitTypes :: [Ty]\n"
226 ++ "intLitTypes = [\n"
227 ++ printList tyEnt (intLitTys entries)
228 ++ "]\n"
229 ++ "ratLitTypes :: [Ty]\n"
230 ++ "ratLitTypes = [\n"
231 ++ printList tyEnt (ratLitTys entries)
232 ++ "]\n"
233 ++ "charLitTypes :: [Ty]\n"
234 ++ "charLitTypes = [\n"
235 ++ printList tyEnt (charLitTys entries)
236 ++ "]\n"
237 ++ "stringLitTypes :: [Ty]\n"
238 ++ "stringLitTypes = [\n"
239 ++ printList tyEnt (stringLitTys entries)
240 ++ "]\n\n"
241
242 where printList f = concat . intersperse ",\n" . filter (not . null) . map f
243 tcEnt (PrimTypeSpec {ty=t}) =
244 case t of
245 TyApp tc args -> parens tc (tcKind tc args)
246 _ -> error ("tcEnt: type in PrimTypeSpec is not a type"
247 ++ " constructor: " ++ show t)
248 tcEnt _ = ""
249 -- hack alert!
250 -- The primops.txt.pp format doesn't have enough information in it to
251 -- print out some of the information that ext-core needs (like kinds,
252 -- and later on in this code, module names) so we special-case. An
253 -- alternative would be to refer to things indirectly and hard-wire
254 -- certain things (e.g., the kind of the Any constructor, here) into
255 -- ext-core's Prims module again.
256 tcKind "Any" _ = "Klifted"
257 tcKind tc [] | last tc == '#' = "Kunlifted"
258 tcKind _ [] | otherwise = "Klifted"
259 -- assumes that all type arguments are lifted (are they?)
260 tcKind tc (_v:as) = "(Karrow Klifted " ++ tcKind tc as
261 ++ ")"
262 valEnt (PseudoOpSpec {name=n, ty=t}) = valEntry n t
263 valEnt (PrimOpSpec {name=n, ty=t}) = valEntry n t
264 valEnt _ = ""
265 valEntry name' ty' = parens name' (mkForallTy (freeTvars ty') (pty ty'))
266 where pty (TyF t1 t2) = mkFunTy (pty t1) (pty t2)
267 pty (TyApp tc ts) = mkTconApp (mkTcon tc) (map pty ts)
268 pty (TyUTup ts) = mkUtupleTy (map pty ts)
269 pty (TyVar tv) = paren $ "Tvar \"" ++ tv ++ "\""
270
271 mkFunTy s1 s2 = "Tapp " ++ (paren ("Tapp (Tcon tcArrow)"
272 ++ " " ++ paren s1))
273 ++ " " ++ paren s2
274 mkTconApp tc args = foldl tapp tc args
275 mkTcon tc = paren $ "Tcon " ++ paren (qualify True tc)
276 mkUtupleTy args = foldl tapp (tcUTuple (length args)) args
277 mkForallTy [] t = t
278 mkForallTy vs t = foldr
279 (\ v s -> "Tforall " ++
280 (paren (quote v ++ ", " ++ vKind v)) ++ " "
281 ++ paren s) t vs
282
283 -- hack alert!
284 vKind "o" = "Kopen"
285 vKind _ = "Klifted"
286
287 freeTvars (TyF t1 t2) = freeTvars t1 `union` freeTvars t2
288 freeTvars (TyApp _ tys) = freeTvarss tys
289 freeTvars (TyVar v) = [v]
290 freeTvars (TyUTup tys) = freeTvarss tys
291 freeTvarss = nub . concatMap freeTvars
292
293 tapp s nextArg = paren $ "Tapp " ++ s ++ " " ++ paren nextArg
294 tcUTuple n = paren $ "Tcon " ++ paren (qualify False $ "Z"
295 ++ show n ++ "H")
296
297 tyEnt (PrimTypeSpec {ty=(TyApp tc _args)}) = " " ++ paren ("Tcon " ++
298 (paren (qualify True tc)))
299 tyEnt _ = ""
300
301 -- more hacks. might be better to do this on the ext-core side,
302 -- as per earlier comment
303 qualify _ tc | tc == "Bool" = "Just boolMname" ++ ", "
304 ++ ze True tc
305 qualify _ tc | tc == "()" = "Just baseMname" ++ ", "
306 ++ ze True tc
307 qualify enc tc = "Just primMname" ++ ", " ++ (ze enc tc)
308 ze enc tc = (if enc then "zEncodeString " else "")
309 ++ "\"" ++ tc ++ "\""
310
311 intLitTys = prefixes ["Int", "Word", "Addr", "Char"]
312 ratLitTys = prefixes ["Float", "Double"]
313 charLitTys = prefixes ["Char"]
314 stringLitTys = prefixes ["Addr"]
315 prefixes ps = filter (\ t ->
316 case t of
317 (PrimTypeSpec {ty=(TyApp tc _args)}) ->
318 any (\ p -> p `isPrefixOf` tc) ps
319 _ -> False)
320
321 parens n ty' = " (zEncodeString \"" ++ n ++ "\", " ++ ty' ++ ")"
322 paren s = "(" ++ s ++ ")"
323 quote s = "\"" ++ s ++ "\""
324
325 gen_latex_doc :: Info -> String
326 gen_latex_doc (Info defaults entries)
327 = "\\primopdefaults{"
328 ++ mk_options defaults
329 ++ "}\n"
330 ++ (concat (map mk_entry entries))
331 where mk_entry (PrimOpSpec {cons=constr,name=n,ty=t,cat=c,desc=d,opts=o}) =
332 "\\primopdesc{"
333 ++ latex_encode constr ++ "}{"
334 ++ latex_encode n ++ "}{"
335 ++ latex_encode (zencode n) ++ "}{"
336 ++ latex_encode (show c) ++ "}{"
337 ++ latex_encode (mk_source_ty t) ++ "}{"
338 ++ latex_encode (mk_core_ty t) ++ "}{"
339 ++ d ++ "}{"
340 ++ mk_options o
341 ++ "}\n"
342 mk_entry (Section {title=ti,desc=d}) =
343 "\\primopsection{"
344 ++ latex_encode ti ++ "}{"
345 ++ d ++ "}\n"
346 mk_entry (PrimTypeSpec {ty=t,desc=d,opts=o}) =
347 "\\primtypespec{"
348 ++ latex_encode (mk_source_ty t) ++ "}{"
349 ++ latex_encode (mk_core_ty t) ++ "}{"
350 ++ d ++ "}{"
351 ++ mk_options o
352 ++ "}\n"
353 mk_entry (PseudoOpSpec {name=n,ty=t,desc=d,opts=o}) =
354 "\\pseudoopspec{"
355 ++ latex_encode (zencode n) ++ "}{"
356 ++ latex_encode (mk_source_ty t) ++ "}{"
357 ++ latex_encode (mk_core_ty t) ++ "}{"
358 ++ d ++ "}{"
359 ++ mk_options o
360 ++ "}\n"
361 mk_source_ty typ = pty typ
362 where pty (TyF t1 t2) = pbty t1 ++ " -> " ++ pty t2
363 pty t = pbty t
364 pbty (TyApp tc ts) = tc ++ (concat (map (' ':) (map paty ts)))
365 pbty (TyUTup ts) = "(# " ++ (concat (intersperse "," (map pty ts))) ++ " #)"
366 pbty t = paty t
367 paty (TyVar tv) = tv
368 paty t = "(" ++ pty t ++ ")"
369
370 mk_core_ty typ = foralls ++ (pty typ)
371 where pty (TyF t1 t2) = pbty t1 ++ " -> " ++ pty t2
372 pty t = pbty t
373 pbty (TyApp tc ts) = (zencode tc) ++ (concat (map (' ':) (map paty ts)))
374 pbty (TyUTup ts) = (zencode (utuplenm (length ts))) ++ (concat ((map (' ':) (map paty ts))))
375 pbty t = paty t
376 paty (TyVar tv) = zencode tv
377 paty (TyApp tc []) = zencode tc
378 paty t = "(" ++ pty t ++ ")"
379 utuplenm 1 = "(# #)"
380 utuplenm n = "(#" ++ (replicate (n-1) ',') ++ "#)"
381 foralls = if tvars == [] then "" else "%forall " ++ (tbinds tvars)
382 tvars = tvars_of typ
383 tbinds [] = ". "
384 tbinds ("o":tbs) = "(o::?) " ++ (tbinds tbs)
385 tbinds (tv:tbs) = tv ++ " " ++ (tbinds tbs)
386 tvars_of (TyF t1 t2) = tvars_of t1 `union` tvars_of t2
387 tvars_of (TyApp _ ts) = foldl union [] (map tvars_of ts)
388 tvars_of (TyUTup ts) = foldr union [] (map tvars_of ts)
389 tvars_of (TyVar tv) = [tv]
390
391 mk_options o =
392 "\\primoptions{"
393 ++ mk_has_side_effects o ++ "}{"
394 ++ mk_out_of_line o ++ "}{"
395 ++ mk_commutable o ++ "}{"
396 ++ mk_needs_wrapper o ++ "}{"
397 ++ mk_can_fail o ++ "}{"
398 ++ latex_encode (mk_strictness o) ++ "}{"
399 ++ "}"
400
401 mk_has_side_effects o = mk_bool_opt o "has_side_effects" "Has side effects." "Has no side effects."
402 mk_out_of_line o = mk_bool_opt o "out_of_line" "Implemented out of line." "Implemented in line."
403 mk_commutable o = mk_bool_opt o "commutable" "Commutable." "Not commutable."
404 mk_needs_wrapper o = mk_bool_opt o "needs_wrapper" "Needs wrapper." "Needs no wrapper."
405 mk_can_fail o = mk_bool_opt o "can_fail" "Can fail." "Cannot fail."
406
407 mk_bool_opt o opt_name if_true if_false =
408 case lookup_attrib opt_name o of
409 Just (OptionTrue _) -> if_true
410 Just (OptionFalse _) -> if_false
411 Just (OptionString _ _) -> error "String value for boolean option"
412 Nothing -> ""
413
414 mk_strictness o =
415 case lookup_attrib "strictness" o of
416 Just (OptionString _ s) -> s -- for now
417 Just _ -> error "Boolean value for strictness"
418 Nothing -> ""
419
420 zencode xs =
421 case maybe_tuple xs of
422 Just n -> n -- Tuples go to Z2T etc
423 Nothing -> concat (map encode_ch xs)
424 where
425 maybe_tuple "(# #)" = Just("Z1H")
426 maybe_tuple ('(' : '#' : cs) = case count_commas (0::Int) cs of
427 (n, '#' : ')' : _) -> Just ('Z' : shows (n+1) "H")
428 _ -> Nothing
429 maybe_tuple "()" = Just("Z0T")
430 maybe_tuple ('(' : cs) = case count_commas (0::Int) cs of
431 (n, ')' : _) -> Just ('Z' : shows (n+1) "T")
432 _ -> Nothing
433 maybe_tuple _ = Nothing
434
435 count_commas :: Int -> String -> (Int, String)
436 count_commas n (',' : cs) = count_commas (n+1) cs
437 count_commas n cs = (n,cs)
438
439 unencodedChar :: Char -> Bool -- True for chars that don't need encoding
440 unencodedChar 'Z' = False
441 unencodedChar 'z' = False
442 unencodedChar c = isAlphaNum c
443
444 encode_ch :: Char -> String
445 encode_ch c | unencodedChar c = [c] -- Common case first
446
447 -- Constructors
448 encode_ch '(' = "ZL" -- Needed for things like (,), and (->)
449 encode_ch ')' = "ZR" -- For symmetry with (
450 encode_ch '[' = "ZM"
451 encode_ch ']' = "ZN"
452 encode_ch ':' = "ZC"
453 encode_ch 'Z' = "ZZ"
454
455 -- Variables
456 encode_ch 'z' = "zz"
457 encode_ch '&' = "za"
458 encode_ch '|' = "zb"
459 encode_ch '^' = "zc"
460 encode_ch '$' = "zd"
461 encode_ch '=' = "ze"
462 encode_ch '>' = "zg"
463 encode_ch '#' = "zh"
464 encode_ch '.' = "zi"
465 encode_ch '<' = "zl"
466 encode_ch '-' = "zm"
467 encode_ch '!' = "zn"
468 encode_ch '+' = "zp"
469 encode_ch '\'' = "zq"
470 encode_ch '\\' = "zr"
471 encode_ch '/' = "zs"
472 encode_ch '*' = "zt"
473 encode_ch '_' = "zu"
474 encode_ch '%' = "zv"
475 encode_ch c = 'z' : shows (ord c) "U"
476
477 latex_encode [] = []
478 latex_encode (c:cs) | c `elem` "#$%&_^{}" = "\\" ++ c:(latex_encode cs)
479 latex_encode ('~':cs) = "\\verb!~!" ++ (latex_encode cs)
480 latex_encode ('\\':cs) = "$\\backslash$" ++ (latex_encode cs)
481 latex_encode (c:cs) = c:(latex_encode cs)
482
483 gen_wrappers :: Info -> String
484 gen_wrappers (Info _ entries)
485 = "{-# LANGUAGE NoImplicitPrelude, UnboxedTuples #-}\n"
486 -- Dependencies on Prelude must be explicit in libraries/base, but we
487 -- don't need the Prelude here so we add NoImplicitPrelude.
488 ++ "module GHC.PrimopWrappers where\n"
489 ++ "import qualified GHC.Prim\n"
490 ++ "import GHC.Bool (Bool)\n"
491 ++ "import GHC.Unit ()\n"
492 ++ "import GHC.Prim (" ++ types ++ ")\n"
493 ++ unlines (concatMap f specs)
494 where
495 specs = filter (not.dodgy) (filter is_primop entries)
496 tycons = foldr union [] $ map (tyconsIn . ty) specs
497 tycons' = filter (`notElem` ["()", "Bool"]) tycons
498 types = concat $ intersperse ", " tycons'
499 f spec = let args = map (\n -> "a" ++ show n) [1 .. arity (ty spec)]
500 src_name = wrap (name spec)
501 lhs = src_name ++ " " ++ unwords args
502 rhs = "(GHC.Prim." ++ name spec ++ ") " ++ unwords args
503 in ["{-# NOINLINE " ++ src_name ++ " #-}",
504 src_name ++ " :: " ++ pprTy (ty spec),
505 lhs ++ " = " ++ rhs]
506 wrap nm | isLower (head nm) = nm
507 | otherwise = "(" ++ nm ++ ")"
508
509 dodgy spec
510 = name spec `elem`
511 [-- C code generator can't handle these
512 "seq#",
513 "tagToEnum#",
514 -- not interested in parallel support
515 "par#", "parGlobal#", "parLocal#", "parAt#",
516 "parAtAbs#", "parAtRel#", "parAtForNow#"
517 ]
518
519 gen_primop_list :: Info -> String
520 gen_primop_list (Info _ entries)
521 = unlines (
522 [ " [" ++ cons first ]
523 ++
524 map (\p -> " , " ++ cons p) rest
525 ++
526 [ " ]" ]
527 ) where (first:rest) = filter is_primop entries
528
529 gen_primop_tag :: Info -> String
530 gen_primop_tag (Info _ entries)
531 = unlines (max_def_type : max_def :
532 tagOf_type : zipWith f primop_entries [1 :: Int ..])
533 where
534 primop_entries = filter is_primop entries
535 tagOf_type = "tagOf_PrimOp :: PrimOp -> FastInt"
536 f i n = "tagOf_PrimOp " ++ cons i ++ " = _ILIT(" ++ show n ++ ")"
537 max_def_type = "maxPrimOpTag :: Int"
538 max_def = "maxPrimOpTag = " ++ show (length primop_entries)
539
540 gen_data_decl :: Info -> String
541 gen_data_decl (Info _ entries)
542 = let conss = map cons (filter is_primop entries)
543 in "data PrimOp\n = " ++ head conss ++ "\n"
544 ++ unlines (map (" | "++) (tail conss))
545
546 gen_switch_from_attribs :: String -> String -> Info -> String
547 gen_switch_from_attribs attrib_name fn_name (Info defaults entries)
548 = let defv = lookup_attrib attrib_name defaults
549 alternatives = catMaybes (map mkAlt (filter is_primop entries))
550
551 getAltRhs (OptionFalse _) = "False"
552 getAltRhs (OptionTrue _) = "True"
553 getAltRhs (OptionString _ s) = s
554
555 mkAlt po
556 = case lookup_attrib attrib_name (opts po) of
557 Nothing -> Nothing
558 Just xx -> Just (fn_name ++ " " ++ cons po ++ " = " ++ getAltRhs xx)
559
560 in
561 case defv of
562 Nothing -> error ("gen_switch_from: " ++ attrib_name)
563 Just xx
564 -> unlines alternatives
565 ++ fn_name ++ " _ = " ++ getAltRhs xx ++ "\n"
566
567 ------------------------------------------------------------------
568 -- Create PrimOpInfo text from PrimOpSpecs -----------------------
569 ------------------------------------------------------------------
570
571 gen_primop_info :: Info -> String
572 gen_primop_info (Info _ entries)
573 = unlines (map mkPOItext (filter is_primop entries))
574
575 mkPOItext :: Entry -> String
576 mkPOItext i = mkPOI_LHS_text i ++ mkPOI_RHS_text i
577
578 mkPOI_LHS_text :: Entry -> String
579 mkPOI_LHS_text i
580 = "primOpInfo " ++ cons i ++ " = "
581
582 mkPOI_RHS_text :: Entry -> String
583 mkPOI_RHS_text i
584 = case cat i of
585 Compare
586 -> case ty i of
587 TyF t1 (TyF _ _)
588 -> "mkCompare " ++ sl_name i ++ ppType t1
589 _ -> error "Type error in comparison op"
590 Monadic
591 -> case ty i of
592 TyF t1 _
593 -> "mkMonadic " ++ sl_name i ++ ppType t1
594 _ -> error "Type error in monadic op"
595 Dyadic
596 -> case ty i of
597 TyF t1 (TyF _ _)
598 -> "mkDyadic " ++ sl_name i ++ ppType t1
599 _ -> error "Type error in dyadic op"
600 GenPrimOp
601 -> let (argTys, resTy) = flatTys (ty i)
602 tvs = nub (tvsIn (ty i))
603 in
604 "mkGenPrimOp " ++ sl_name i ++ " "
605 ++ listify (map ppTyVar tvs) ++ " "
606 ++ listify (map ppType argTys) ++ " "
607 ++ "(" ++ ppType resTy ++ ")"
608
609 sl_name :: Entry -> String
610 sl_name i = "(fsLit \"" ++ name i ++ "\") "
611
612 ppTyVar :: String -> String
613 ppTyVar "a" = "alphaTyVar"
614 ppTyVar "b" = "betaTyVar"
615 ppTyVar "c" = "gammaTyVar"
616 ppTyVar "s" = "deltaTyVar"
617 ppTyVar "o" = "openAlphaTyVar"
618 ppTyVar _ = error "Unknown type var"
619
620 ppType :: Ty -> String
621 ppType (TyApp "Bool" []) = "boolTy"
622
623 ppType (TyApp "Int#" []) = "intPrimTy"
624 ppType (TyApp "Int32#" []) = "int32PrimTy"
625 ppType (TyApp "Int64#" []) = "int64PrimTy"
626 ppType (TyApp "Char#" []) = "charPrimTy"
627 ppType (TyApp "Word#" []) = "wordPrimTy"
628 ppType (TyApp "Word32#" []) = "word32PrimTy"
629 ppType (TyApp "Word64#" []) = "word64PrimTy"
630 ppType (TyApp "Addr#" []) = "addrPrimTy"
631 ppType (TyApp "Float#" []) = "floatPrimTy"
632 ppType (TyApp "Double#" []) = "doublePrimTy"
633 ppType (TyApp "ByteArray#" []) = "byteArrayPrimTy"
634 ppType (TyApp "RealWorld" []) = "realWorldTy"
635 ppType (TyApp "ThreadId#" []) = "threadIdPrimTy"
636 ppType (TyApp "ForeignObj#" []) = "foreignObjPrimTy"
637 ppType (TyApp "BCO#" []) = "bcoPrimTy"
638 ppType (TyApp "()" []) = "unitTy" -- unitTy is TysWiredIn's name for ()
639
640 ppType (TyVar "a") = "alphaTy"
641 ppType (TyVar "b") = "betaTy"
642 ppType (TyVar "c") = "gammaTy"
643 ppType (TyVar "s") = "deltaTy"
644 ppType (TyVar "o") = "openAlphaTy"
645 ppType (TyApp "State#" [x]) = "mkStatePrimTy " ++ ppType x
646 ppType (TyApp "MutVar#" [x,y]) = "mkMutVarPrimTy " ++ ppType x
647 ++ " " ++ ppType y
648 ppType (TyApp "MutableArray#" [x,y]) = "mkMutableArrayPrimTy " ++ ppType x
649 ++ " " ++ ppType y
650
651 ppType (TyApp "MutableByteArray#" [x]) = "mkMutableByteArrayPrimTy "
652 ++ ppType x
653
654 ppType (TyApp "Array#" [x]) = "mkArrayPrimTy " ++ ppType x
655
656
657 ppType (TyApp "Weak#" [x]) = "mkWeakPrimTy " ++ ppType x
658 ppType (TyApp "StablePtr#" [x]) = "mkStablePtrPrimTy " ++ ppType x
659 ppType (TyApp "StableName#" [x]) = "mkStableNamePrimTy " ++ ppType x
660
661 ppType (TyApp "MVar#" [x,y]) = "mkMVarPrimTy " ++ ppType x
662 ++ " " ++ ppType y
663 ppType (TyApp "TVar#" [x,y]) = "mkTVarPrimTy " ++ ppType x
664 ++ " " ++ ppType y
665 ppType (TyUTup ts) = "(mkTupleTy Unboxed "
666 ++ listify (map ppType ts) ++ ")"
667
668 ppType (TyF s d) = "(mkFunTy (" ++ ppType s ++ ") (" ++ ppType d ++ "))"
669
670 ppType other
671 = error ("ppType: can't handle: " ++ show other ++ "\n")
672
673 listify :: [String] -> String
674 listify ss = "[" ++ concat (intersperse ", " ss) ++ "]"
675
676 flatTys :: Ty -> ([Ty],Ty)
677 flatTys (TyF t1 t2) = case flatTys t2 of (ts,t) -> (t1:ts,t)
678 flatTys other = ([],other)
679
680 tvsIn :: Ty -> [TyVar]
681 tvsIn (TyF t1 t2) = tvsIn t1 ++ tvsIn t2
682 tvsIn (TyApp _ tys) = concatMap tvsIn tys
683 tvsIn (TyVar tv) = [tv]
684 tvsIn (TyUTup tys) = concatMap tvsIn tys
685
686 tyconsIn :: Ty -> [TyCon]
687 tyconsIn (TyF t1 t2) = tyconsIn t1 `union` tyconsIn t2
688 tyconsIn (TyApp tc tys) = foldr union [tc] $ map tyconsIn tys
689 tyconsIn (TyVar _) = []
690 tyconsIn (TyUTup tys) = foldr union [] $ map tyconsIn tys
691
692 arity :: Ty -> Int
693 arity = length . fst . flatTys
694