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