3Description : The default code generator for Idris, generating C code.
6Maintainer : The Idris Community.
8module IRTS.CodegenC (codegenC) where
13import IRTS.CodegenCommon
14import IRTS.Defunctionalise
24import Data.List (intercalate, nubBy)
27import System.Directory
29import System.FilePath ((<.>), (</>))
33codegenC :: CodeGenerator
34codegenC ci = do codegenC' (simpleDecls ci)
39 (map mkLib (compileLibs ci) ++
40 map incdir (importDirs ci))
45 when (interfaces ci) $
46 codegenH (exportDecls ci)
48 where mkLib l = "-l" ++ l
51codegenC' :: [(Name, SDecl)]
52 -> String -- ^ output file name
53 -> OutputType -- ^ generate executable if True, only .o if False
54 -> [FilePath] -- ^ include files
55 -> [String] -- ^ extra object files
56 -> [String] -- ^ extra compiler flags (libraries)
57 -> [String] -- ^ extra compiler flags (anything)
59 -> Bool -- ^ interfaces too (so make a .o instead)
62codegenC' defs out exec incs objs libs flags exports iface dbg
64 let bc = map toBC defs
65 let wrappers = genWrappers bc
66 let h = concatMap toDecl (map fst bc)
67 let cc = concatMap (uncurry toC) bc
68 let hi = concatMap ifaceC (concatMap getExp exports)
70 mprog <- readFile (d </> "idris_main" <.> "c")
71 let cout = headers incs ++ debug dbg ++ h ++ wrappers ++ cc ++
72 (if (exec == Executable) then mprog else hi)
74 Raw -> writeSource out cout
76 (tmpn, tmph) <- tempfile ".c"
81 libFlags <- getLibFlags
82 incFlags <- getIncFlags
83 envFlags <- getEnvFlags
84 let stackFlag = if isWindows then ["-Wl,--stack,16777216"] else []
85 let args = [gccDbg dbg] ++
87 -- # Any flags defined here which alter the RTS API must also be added to config.mk
88 ["-DHAS_PTHREAD", "-DIDRIS_ENABLE_STATS",
89 "-I."] ++ objs ++ envFlags ++
90 (if (exec == Executable) then [] else ["-c"]) ++
92 (if not iface then libFlags else []) ++
94 (if not iface then libs else []) ++
97-- putStrLn (show args)
98 exit <- rawSystem comp args
99 when (exit /= ExitSuccess) $
100 putStrLn ("FAILURE: " ++ show comp ++ " " ++ show args)
102 getExp (Export _ _ exp) = exp
106 (\h -> "#include \"" ++ h ++ "\"\n")
107 (xs ++ ["idris_rts.h", "idris_bitstring.h", "idris_stdfgn.h"])
109debug TRACE = "#define IDRIS_TRACE\n\n"
112-- We're using signed integers now. Make sure we get consistent semantics
113-- out of them from gcc. See e.g. http://thiemonagel.de/2010/01/signed-integer-overflow/
114gccFlags i = if i then ["-fwrapv"]
115 else ["-fwrapv", "-fno-strict-overflow"]
121cname :: Name -> String
122cname n = "_idris_" ++ concatMap cchar (showCG n)
123 where cchar x | isAlpha x || isDigit x = [x]
124 | otherwise = "_" ++ show (fromEnum x) ++ "_"
126indent :: Int -> String
127indent n = replicate (n*4) ' '
130creg (L i) = "LOC(" ++ show i ++ ")"
131creg (T i) = "TOP(" ++ show i ++ ")"
134toDecl :: Name -> String
135toDecl f = "void " ++ cname f ++ "(VM*, VAL*);\n"
137toC :: Name -> [BC] -> String
139 = -- "/* " ++ show code ++ "*/\n\n" ++
140 "void " ++ cname f ++ "(VM* vm, VAL* oldbase) {\n" ++
141 indent 1 ++ "INITFRAME;\n" ++
142 concatMap (bcc 1) code ++ "}\n\n"
144showCStr :: String -> String
145showCStr s = '"' : foldr ((++) . showChar) "\"" s
147 showChar :: Char -> String
148 showChar '"' = "\\\""
149 showChar '\\' = "\\\\"
151 -- Note: we need the double quotes around the codes because otherwise
152 -- "\n3" would get encoded as "\x0a3", which is incorrect.
153 -- Instead, we opt for "\x0a""3" and let the C compiler deal with it.
154 | ord c < 0x20 = showUTF8 (ord c)
155 | ord c < 0x7f = [c] -- 0x7f = \DEL
156 | otherwise = showHexes (utf8bytes (ord c))
158 showUTF8 c = "\"\"\\x" ++ pad (showHex c "") ++ "\"\""
159 showHexes = foldr ((++) . showUTF8) ""
161 utf8bytes :: Int -> [Int]
164 | x <= 0x7ff = let (y : ys) = split [] 2 x in (y .|. 0xc0) : map (.|. 0x80) ys
165 | x <= 0xffff = let (y : ys) = split [] 3 x in (y .|. 0xe0) : map (.|. 0x80) ys
166 | x <= 0x10ffff = let (y : ys) = split [] 4 x in (y .|. 0xf0) : map (.|. 0x80) ys
167 | otherwise = error $ "Invalid Unicode code point U+" ++ showHex x ""
169 split acc 1 x = x : acc
170 split acc i x = split (x .&. 0x3f : acc) (i - 1) (shiftR x 6)
172 pad :: String -> String
173 pad s = case length s of
176 _ -> error $ "Can't happen: String of invalid length " ++ show s
178bcc :: Int -> BC -> String
179bcc i (ASSIGN l r) = indent i ++ creg l ++ " = " ++ creg r ++ ";\n"
180bcc i (ASSIGNCONST l c)
181 = indent i ++ creg l ++ " = " ++ mkConst c ++ ";\n"
183 mkConst (I i) = "MKINT(" ++ show i ++ ")"
184 mkConst (BI i) | i < (2^30) = "MKINT(" ++ show i ++ ")"
185 | otherwise = "MKBIGC(vm,\"" ++ show i ++ "\")"
186 mkConst (Fl f) = "MKFLOAT(vm, " ++ show f ++ ")"
187 mkConst (Ch c) = "MKINT(" ++ show (fromEnum c) ++ ")"
188 mkConst (Str s) = "MKSTR(vm, " ++ showCStr s ++ ")"
189 mkConst (B8 x) = "idris_b8const(vm, " ++ show x ++ "U)"
190 mkConst (B16 x) = "idris_b16const(vm, " ++ show x ++ "U)"
191 mkConst (B32 x) = "idris_b32const(vm, " ++ show x ++ "UL)"
192 mkConst (B64 x) = "idris_b64const(vm, " ++ show x ++ "ULL)"
193 -- if it's a type constant, we won't use it, but equally it shouldn't
194 -- report an error. These might creep into generated for various reasons
195 -- (especially if erasure is disabled).
196 mkConst c | isTypeConst c = "MKINT(42424242)"
197 mkConst c = error $ "mkConst of (" ++ show c ++ ") not implemented"
199bcc i (UPDATE l r) = indent i ++ creg l ++ " = " ++ creg r ++ ";\n"
200bcc i (MKCON l loc tag []) | tag < 256
201 = indent i ++ creg l ++ " = NULL_CON(" ++ show tag ++ ");\n"
202bcc i (MKCON l loc tag args)
203 = indent i ++ alloc loc tag ++
204 indent i ++ setArgs 0 args ++ "\n" ++
205 indent i ++ creg l ++ " = " ++ creg Tmp ++ ";\n"
207-- "MKCON(vm, " ++ creg l ++ ", " ++ show tag ++ ", " ++
208-- show (length args) ++ concatMap showArg args ++ ");\n"
209 where showArg r = ", " ++ creg r
211 setArgs i (x : xs) = "SETARG(" ++ creg Tmp ++ ", " ++ show i ++ ", " ++ creg x ++
212 "); " ++ setArgs (i + 1) xs
214 = "allocCon(" ++ creg Tmp ++ ", vm, " ++ show tag ++ ", " ++
215 show (length args) ++ ", 0);\n"
217 = "updateCon(" ++ creg Tmp ++ ", " ++ creg old ++ ", " ++ show tag ++ ", " ++
218 show (length args) ++ ");\n"
220bcc i (PROJECT l loc a) = indent i ++ "PROJECT(vm, " ++ creg l ++ ", " ++ show loc ++
221 ", " ++ show a ++ ");\n"
222bcc i (PROJECTINTO r t idx)
223 = indent i ++ creg r ++ " = GETARG(" ++ creg t ++ ", " ++ show idx ++ ");\n"
224bcc i (CASE True r code def)
225 | length code < 4 = showCase i def code
227 showCode :: Int -> [BC] -> String
228 showCode i bc = "{\n" ++ concatMap (bcc (i + 1)) bc ++
231 showCase :: Int -> Maybe [BC] -> [(Int, [BC])] -> String
232 showCase i Nothing [(t, c)] = indent i ++ showCode i c
233 showCase i (Just def) [] = indent i ++ showCode i def
234 showCase i def ((t, c) : cs)
235 = indent i ++ "if (CTAG(" ++ creg r ++ ") == " ++ show t ++ ") " ++ showCode i c
236 ++ indent i ++ "else\n" ++ showCase i def cs
238bcc i (CASE safe r code def)
239 = indent i ++ "switch(" ++ ctag safe ++ "(" ++ creg r ++ ")) {\n" ++
240 concatMap (showCase i) code ++
247 showCase i (t, bc) = indent i ++ "case " ++ show t ++ ":\n"
248 ++ concatMap (bcc (i+1)) bc ++ indent (i + 1) ++ "break;\n"
249 showDef i Nothing = ""
250 showDef i (Just c) = indent i ++ "default:\n"
251 ++ concatMap (bcc (i+1)) c ++ indent (i + 1) ++ "break;\n"
252bcc i (CONSTCASE r code def)
254-- = indent i ++ "switch(GETINT(" ++ creg r ++ ")) {\n" ++
255-- concatMap (showCase i) code ++
258 = concatMap (iCase (creg r)) code ++
259 indent i ++ "{\n" ++ showDefS i def ++ indent i ++ "}\n"
261 = concatMap (strCase ("GETSTR(" ++ creg r ++ ")")) code ++
262 indent i ++ "{\n" ++ showDefS i def ++ indent i ++ "}\n"
264 = concatMap (biCase (creg r)) code ++
265 indent i ++ "{\n" ++ showDefS i def ++ indent i ++ "}\n"
266 | otherwise = error $ "Can't happen: Can't compile const case " ++ show code
268 intConsts ((I _, _ ) : _) = True
269 intConsts ((Ch _, _ ) : _) = True
270 intConsts ((B8 _, _ ) : _) = True
271 intConsts ((B16 _, _ ) : _) = True
272 intConsts ((B32 _, _ ) : _) = True
273 intConsts ((B64 _, _ ) : _) = True
276 bigintConsts ((BI _, _ ) : _) = True
277 bigintConsts _ = False
279 strConsts ((Str _, _ ) : _) = True
283 indent i ++ "if (strcmp(" ++ sv ++ ", " ++ show s ++ ") == 0) {\n" ++
284 concatMap (bcc (i+1)) bc ++ indent i ++ "} else\n"
285 biCase bv (BI b, bc) =
286 indent i ++ "if (bigEqConst(" ++ bv ++ ", " ++ show b ++ ")) {\n"
287 ++ concatMap (bcc (i+1)) bc ++ indent i ++ "} else\n"
289 indent i ++ "if (GETINT(" ++ v ++ ") == " ++ show b ++ ") {\n"
290 ++ concatMap (bcc (i+1)) bc ++ indent i ++ "} else\n"
292 indent i ++ "if (GETINT(" ++ v ++ ") == " ++ show (fromEnum b) ++ ") {\n"
293 ++ concatMap (bcc (i+1)) bc ++ indent i ++ "} else\n"
295 indent i ++ "if (GETBITS8(" ++ v ++ ") == " ++ show (fromEnum w) ++ ") {\n"
296 ++ concatMap (bcc (i+1)) bc ++ indent i ++ "} else\n"
297 iCase v (B16 w, bc) =
298 indent i ++ "if (GETBITS16(" ++ v ++ ") == " ++ show (fromEnum w) ++ ") {\n"
299 ++ concatMap (bcc (i+1)) bc ++ indent i ++ "} else\n"
300 iCase v (B32 w, bc) =
301 indent i ++ "if (GETBITS32(" ++ v ++ ") == " ++ show (fromEnum w) ++ ") {\n"
302 ++ concatMap (bcc (i+1)) bc ++ indent i ++ "} else\n"
303 iCase v (B64 w, bc) =
304 indent i ++ "if (GETBITS64(" ++ v ++ ") == " ++ show (fromEnum w) ++ ") {\n"
305 ++ concatMap (bcc (i+1)) bc ++ indent i ++ "} else\n"
306 showCase i (t, bc) = indent i ++ "case " ++ show t ++ ":\n"
307 ++ concatMap (bcc (i+1)) bc ++
308 indent (i + 1) ++ "break;\n"
309 showDef i Nothing = ""
310 showDef i (Just c) = indent i ++ "default:\n"
311 ++ concatMap (bcc (i+1)) c ++
312 indent (i + 1) ++ "break;\n"
313 showDefS i Nothing = ""
314 showDefS i (Just c) = concatMap (bcc (i+1)) c
316bcc i (CALL n) = indent i ++ "CALL(" ++ cname n ++ ");\n"
317bcc i (TAILCALL n) = indent i ++ "TAILCALL(" ++ cname n ++ ");\n"
318bcc i (SLIDE n) = indent i ++ "SLIDE(vm, " ++ show n ++ ");\n"
319bcc i REBASE = indent i ++ "REBASE;\n"
320bcc i (RESERVE 0) = ""
321bcc i (RESERVE n) = indent i ++ "RESERVE(" ++ show n ++ ");\n"
323bcc i (ADDTOP n) = indent i ++ "ADDTOP(" ++ show n ++ ");\n"
324bcc i (TOPBASE n) = indent i ++ "TOPBASE(" ++ show n ++ ");\n"
325bcc i (BASETOP n) = indent i ++ "BASETOP(" ++ show n ++ ");\n"
326bcc i STOREOLD = indent i ++ "STOREOLD;\n"
327bcc i (OP l fn args) = indent i ++ doOp (creg l ++ " = ") fn args ++ ";\n"
328bcc i (FOREIGNCALL l rty (FStr fn@('&':name)) [])
330 c_irts (toFType rty) (creg l ++ " = ") fn ++ ";\n"
331bcc i (FOREIGNCALL l rty (FStr fn) (x:xs)) | fn == "%wrapper"
333 c_irts (toFType rty) (creg l ++ " = ")
334 ("_idris_get_wrapper(" ++ creg (snd x) ++ ")") ++ ";\n"
335bcc i (FOREIGNCALL l rty (FStr fn) (x:xs)) | fn == "%dynamic"
336 = indent i ++ c_irts (toFType rty) (creg l ++ " = ")
337 ("(*(" ++ cFnSig "" rty xs ++ ") GETPTR(" ++ creg (snd x) ++ "))" ++
338 "(" ++ showSep "," (map fcall xs) ++ ")") ++ ";\n"
339bcc i (FOREIGNCALL l rty (FStr fn) args)
341 c_irts (toFType rty) (creg l ++ " = ")
342 (fn ++ "(" ++ showSep "," (map fcall args) ++ ")") ++ ";\n"
343bcc i (FOREIGNCALL l rty _ args) = error "Foreign Function calls cannot be partially applied, without being inlined."
344bcc i (NULL r) = indent i ++ creg r ++ " = NULL;\n" -- clear, so it'll be GCed
345bcc i (ERROR str) = indent i ++ "fprintf(stderr, " ++ show str ++ "); fprintf(stderr, \"\\n\"); exit(-1);\n"
346-- bcc i c = error (show c) -- indent i ++ "// not done yet\n"
348fcall (t, arg) = irts_c (toFType t) (creg arg)
349-- Deconstruct the Foreign type in the defunctionalised expression and build
350-- a foreign type description for c_irts and irts_c
352 | i == sUN "C_IntChar" = ATInt ITChar
353 | i == sUN "C_IntNative" = ATInt ITNative
354 | i == sUN "C_IntBits8" = ATInt (ITFixed IT8)
355 | i == sUN "C_IntBits16" = ATInt (ITFixed IT16)
356 | i == sUN "C_IntBits32" = ATInt (ITFixed IT32)
357 | i == sUN "C_IntBits64" = ATInt (ITFixed IT64)
358toAType t = error (show t ++ " not defined in toAType")
361 | c == sUN "C_Str" = FString
362 | c == sUN "C_Float" = FArith ATFloat
363 | c == sUN "C_Ptr" = FPtr
364 | c == sUN "C_MPtr" = FManagedPtr
365 | c == sUN "C_CData" = FCData
366 | c == sUN "C_Unit" = FUnit
367toFType (FApp c [_,ity])
368 | c == sUN "C_IntT" = FArith (toAType ity)
369 | c == sUN "C_FnT" = toFunType ity
371 | c == sUN "C_Any" = FAny
374toFunType (FApp c [_,ity])
375 | c == sUN "C_FnBase" = FFunction
376 | c == sUN "C_FnIO" = FFunctionIO
377toFunType (FApp c [_,_,_,ity])
378 | c == sUN "C_Fn" = toFunType ity
381c_irts (FArith (ATInt ITNative)) l x = l ++ "MKINT((i_int)(" ++ x ++ "))"
382c_irts (FArith (ATInt ITChar)) l x = c_irts (FArith (ATInt ITNative)) l x
383c_irts (FArith (ATInt (ITFixed ity))) l x
384 = l ++ "idris_b" ++ show (nativeTyWidth ity) ++ "const(vm, " ++ x ++ ")"
385c_irts FString l x = l ++ "MKSTR(vm, " ++ x ++ ")"
387c_irts FPtr l x = l ++ "MKPTR(vm, " ++ x ++ ")"
388c_irts FManagedPtr l x = l ++ "MKMPTR(vm, " ++ x ++ ")"
389c_irts (FArith ATFloat) l x = l ++ "MKFLOAT(vm, " ++ x ++ ")"
390c_irts FCData l x = l ++ "MKCDATA(vm, " ++ x ++ ")"
391c_irts FAny l x = l ++ x
392c_irts FFunction l x = error "Return of function from foreign call is not supported"
393c_irts FFunctionIO l x = error "Return of function from foreign call is not supported"
395irts_c (FArith (ATInt ITNative)) x = "GETINT(" ++ x ++ ")"
396irts_c (FArith (ATInt ITChar)) x = irts_c (FArith (ATInt ITNative)) x
397irts_c (FArith (ATInt (ITFixed ity))) x
398 = "(" ++ x ++ "->info.bits" ++ show (nativeTyWidth ity) ++ ")"
399irts_c FString x = "GETSTR(" ++ x ++ ")"
401irts_c FPtr x = "GETPTR(" ++ x ++ ")"
402irts_c FManagedPtr x = "GETMPTR(" ++ x ++ ")"
403irts_c (FArith ATFloat) x = "GETFLOAT(" ++ x ++ ")"
404irts_c FCData x = "GETCDATA(" ++ x ++ ")"
406irts_c FFunctionIO x = wrapped x
407irts_c FFunction x = wrapped x
409cFnSig name rty [] = ctype rty ++ " (*" ++ name ++ ")(void) "
410cFnSig name rty args = ctype rty ++ " (*" ++ name ++ ")("
411 ++ showSep "," (map (ctype . fst) args) ++ ") "
413wrapped x = "_idris_get_wrapper(" ++ x ++ ")"
415bitOp v op ty args = v ++ "idris_b" ++ show (nativeTyWidth ty) ++ op ++ "(vm, " ++ intercalate ", " (map creg args) ++ ")"
417bitCoerce v op input output arg
418 = v ++ "idris_b" ++ show (nativeTyWidth input) ++ op ++ show (nativeTyWidth output) ++ "(vm, " ++ creg arg ++ ")"
420signedTy :: NativeTy -> String
421signedTy t = "int" ++ show (nativeTyWidth t) ++ "_t"
423doOp v (LPlus (ATInt ITNative)) [l, r] = v ++ "ADD(" ++ creg l ++ ", " ++ creg r ++ ")"
424doOp v (LMinus (ATInt ITNative)) [l, r] = v ++ "INTOP(-," ++ creg l ++ ", " ++ creg r ++ ")"
425doOp v (LTimes (ATInt ITNative)) [l, r] = v ++ "MULT(" ++ creg l ++ ", " ++ creg r ++ ")"
426doOp v (LUDiv ITNative) [l, r] = v ++ "UINTOP(/," ++ creg l ++ ", " ++ creg r ++ ")"
427doOp v (LSDiv (ATInt ITNative)) [l, r] = v ++ "INTOP(/," ++ creg l ++ ", " ++ creg r ++ ")"
428doOp v (LURem ITNative) [l, r] = v ++ "UINTOP(%," ++ creg l ++ ", " ++ creg r ++ ")"
429doOp v (LSRem (ATInt ITNative)) [l, r] = v ++ "INTOP(%," ++ creg l ++ ", " ++ creg r ++ ")"
430doOp v (LAnd ITNative) [l, r] = v ++ "INTOP(&," ++ creg l ++ ", " ++ creg r ++ ")"
431doOp v (LOr ITNative) [l, r] = v ++ "INTOP(|," ++ creg l ++ ", " ++ creg r ++ ")"
432doOp v (LXOr ITNative) [l, r] = v ++ "INTOP(^," ++ creg l ++ ", " ++ creg r ++ ")"
433doOp v (LSHL ITNative) [l, r] = v ++ "INTOP(<<," ++ creg l ++ ", " ++ creg r ++ ")"
434doOp v (LLSHR ITNative) [l, r] = v ++ "UINTOP(>>," ++ creg l ++ ", " ++ creg r ++ ")"
435doOp v (LASHR ITNative) [l, r] = v ++ "INTOP(>>," ++ creg l ++ ", " ++ creg r ++ ")"
436doOp v (LCompl ITNative) [x] = v ++ "INTOP(~," ++ creg x ++ ")"
437doOp v (LEq (ATInt ITNative)) [l, r] = v ++ "INTOP(==," ++ creg l ++ ", " ++ creg r ++ ")"
438doOp v (LSLt (ATInt ITNative)) [l, r] = v ++ "INTOP(<," ++ creg l ++ ", " ++ creg r ++ ")"
439doOp v (LSLe (ATInt ITNative)) [l, r] = v ++ "INTOP(<=," ++ creg l ++ ", " ++ creg r ++ ")"
440doOp v (LSGt (ATInt ITNative)) [l, r] = v ++ "INTOP(>," ++ creg l ++ ", " ++ creg r ++ ")"
441doOp v (LSGe (ATInt ITNative)) [l, r] = v ++ "INTOP(>=," ++ creg l ++ ", " ++ creg r ++ ")"
442doOp v (LLt ITNative) [l, r] = v ++ "UINTOP(<," ++ creg l ++ ", " ++ creg r ++ ")"
443doOp v (LLe ITNative) [l, r] = v ++ "UINTOP(<=," ++ creg l ++ ", " ++ creg r ++ ")"
444doOp v (LGt ITNative) [l, r] = v ++ "UINTOP(>," ++ creg l ++ ", " ++ creg r ++ ")"
445doOp v (LGe ITNative) [l, r] = v ++ "UINTOP(>=," ++ creg l ++ ", " ++ creg r ++ ")"
447doOp v (LPlus (ATInt ITChar)) [l, r] = doOp v (LPlus (ATInt ITNative)) [l, r]
448doOp v (LMinus (ATInt ITChar)) [l, r] = doOp v (LMinus (ATInt ITNative)) [l, r]
449doOp v (LTimes (ATInt ITChar)) [l, r] = doOp v (LTimes (ATInt ITNative)) [l, r]
450doOp v (LUDiv ITChar) [l, r] = doOp v (LUDiv ITNative) [l, r]
451doOp v (LSDiv (ATInt ITChar)) [l, r] = doOp v (LSDiv (ATInt ITNative)) [l, r]
452doOp v (LURem ITChar) [l, r] = doOp v (LURem ITNative) [l, r]
453doOp v (LSRem (ATInt ITChar)) [l, r] = doOp v (LSRem (ATInt ITNative)) [l, r]
454doOp v (LAnd ITChar) [l, r] = doOp v (LAnd ITNative) [l, r]
455doOp v (LOr ITChar) [l, r] = doOp v (LOr ITNative) [l, r]
456doOp v (LXOr ITChar) [l, r] = doOp v (LXOr ITNative) [l, r]
457doOp v (LSHL ITChar) [l, r] = doOp v (LSHL ITNative) [l, r]
458doOp v (LLSHR ITChar) [l, r] = doOp v (LLSHR ITNative) [l, r]
459doOp v (LASHR ITChar) [l, r] = doOp v (LASHR ITNative) [l, r]
460doOp v (LCompl ITChar) [x] = doOp v (LCompl ITNative) [x]
461doOp v (LEq (ATInt ITChar)) [l, r] = doOp v (LEq (ATInt ITNative)) [l, r]
462doOp v (LSLt (ATInt ITChar)) [l, r] = doOp v (LSLt (ATInt ITNative)) [l, r]
463doOp v (LSLe (ATInt ITChar)) [l, r] = doOp v (LSLe (ATInt ITNative)) [l, r]
464doOp v (LSGt (ATInt ITChar)) [l, r] = doOp v (LSGt (ATInt ITNative)) [l, r]
465doOp v (LSGe (ATInt ITChar)) [l, r] = doOp v (LSGe (ATInt ITNative)) [l, r]
466doOp v (LLt ITChar) [l, r] = doOp v (LLt ITNative) [l, r]
467doOp v (LLe ITChar) [l, r] = doOp v (LLe ITNative) [l, r]
468doOp v (LGt ITChar) [l, r] = doOp v (LGt ITNative) [l, r]
469doOp v (LGe ITChar) [l, r] = doOp v (LGe ITNative) [l, r]
471doOp v (LPlus ATFloat) [l, r] = v ++ "FLOATOP(+," ++ creg l ++ ", " ++ creg r ++ ")"
472doOp v (LMinus ATFloat) [l, r] = v ++ "FLOATOP(-," ++ creg l ++ ", " ++ creg r ++ ")"
473doOp v (LTimes ATFloat) [l, r] = v ++ "FLOATOP(*," ++ creg l ++ ", " ++ creg r ++ ")"
474doOp v (LSDiv ATFloat) [l, r] = v ++ "FLOATOP(/," ++ creg l ++ ", " ++ creg r ++ ")"
475doOp v (LEq ATFloat) [l, r] = v ++ "FLOATBOP(==," ++ creg l ++ ", " ++ creg r ++ ")"
476doOp v (LSLt ATFloat) [l, r] = v ++ "FLOATBOP(<," ++ creg l ++ ", " ++ creg r ++ ")"
477doOp v (LSLe ATFloat) [l, r] = v ++ "FLOATBOP(<=," ++ creg l ++ ", " ++ creg r ++ ")"
478doOp v (LSGt ATFloat) [l, r] = v ++ "FLOATBOP(>," ++ creg l ++ ", " ++ creg r ++ ")"
479doOp v (LSGe ATFloat) [l, r] = v ++ "FLOATBOP(>=," ++ creg l ++ ", " ++ creg r ++ ")"
481doOp v (LIntFloat ITBig) [x] = v ++ "idris_castBigFloat(vm, " ++ creg x ++ ")"
482doOp v (LFloatInt ITBig) [x] = v ++ "idris_castFloatBig(vm, " ++ creg x ++ ")"
483doOp v (LPlus (ATInt ITBig)) [l, r] = v ++ "idris_bigPlus(vm, " ++ creg l ++ ", " ++ creg r ++ ")"
484doOp v (LMinus (ATInt ITBig)) [l, r] = v ++ "idris_bigMinus(vm, " ++ creg l ++ ", " ++ creg r ++ ")"
485doOp v (LTimes (ATInt ITBig)) [l, r] = v ++ "idris_bigTimes(vm, " ++ creg l ++ ", " ++ creg r ++ ")"
486doOp v (LSDiv (ATInt ITBig)) [l, r] = v ++ "idris_bigDivide(vm, " ++ creg l ++ ", " ++ creg r ++ ")"
487doOp v (LSRem (ATInt ITBig)) [l, r] = v ++ "idris_bigMod(vm, " ++ creg l ++ ", " ++ creg r ++ ")"
488doOp v (LAnd ITBig) [l, r] = v ++ "idris_bigAnd(vm, " ++ creg l ++ ", " ++ creg r ++ ")"
489doOp v (LOr ITBig) [l, r] = v ++ "idris_bigOr(vm, " ++ creg l ++ ", " ++ creg r ++ ")"
490doOp v (LSHL ITBig) [l, r] = v ++ "idris_bigShiftLeft(vm, " ++ creg l ++ ", " ++ creg r ++ ")"
491doOp v (LLSHR ITBig) [l, r] = v ++ "idris_bigLShiftRight(vm, " ++ creg l ++ ", " ++ creg r ++ ")"
492doOp v (LASHR ITBig) [l, r] = v ++ "idris_bigAShiftRight(vm, " ++ creg l ++ ", " ++ creg r ++ ")"
493doOp v (LEq (ATInt ITBig)) [l, r] = v ++ "idris_bigEq(vm, " ++ creg l ++ ", " ++ creg r ++ ")"
494doOp v (LSLt (ATInt ITBig)) [l, r] = v ++ "idris_bigLt(vm, " ++ creg l ++ ", " ++ creg r ++ ")"
495doOp v (LSLe (ATInt ITBig)) [l, r] = v ++ "idris_bigLe(vm, " ++ creg l ++ ", " ++ creg r ++ ")"
496doOp v (LSGt (ATInt ITBig)) [l, r] = v ++ "idris_bigGt(vm, " ++ creg l ++ ", " ++ creg r ++ ")"
497doOp v (LSGe (ATInt ITBig)) [l, r] = v ++ "idris_bigGe(vm, " ++ creg l ++ ", " ++ creg r ++ ")"
499doOp v (LIntFloat ITNative) [x] = v ++ "idris_castIntFloat(" ++ creg x ++ ")"
500doOp v (LFloatInt ITNative) [x] = v ++ "idris_castFloatInt(" ++ creg x ++ ")"
501doOp v (LSExt ITNative ITBig) [x] = v ++ "idris_castIntBig(vm, " ++ creg x ++ ")"
502doOp v (LTrunc ITBig ITNative) [x] = v ++ "idris_castBigInt(vm, " ++ creg x ++ ")"
503doOp v (LStrInt ITBig) [x] = v ++ "idris_castStrBig(vm, " ++ creg x ++ ")"
504doOp v (LIntStr ITBig) [x] = v ++ "idris_castBigStr(vm, " ++ creg x ++ ")"
505doOp v (LIntStr ITNative) [x] = v ++ "idris_castIntStr(vm, " ++ creg x ++ ")"
506doOp v (LStrInt ITNative) [x] = v ++ "idris_castStrInt(vm, " ++ creg x ++ ")"
507doOp v (LIntStr (ITFixed _)) [x] = v ++ "idris_castBitsStr(vm, " ++ creg x ++ ")"
508doOp v LFloatStr [x] = v ++ "idris_castFloatStr(vm, " ++ creg x ++ ")"
509doOp v LStrFloat [x] = v ++ "idris_castStrFloat(vm, " ++ creg x ++ ")"
511doOp v (LSLt (ATInt (ITFixed ty))) [x, y] = bitOp v "SLt" ty [x, y]
512doOp v (LSLe (ATInt (ITFixed ty))) [x, y] = bitOp v "SLte" ty [x, y]
513doOp v (LEq (ATInt (ITFixed ty))) [x, y] = bitOp v "Eq" ty [x, y]
514doOp v (LSGe (ATInt (ITFixed ty))) [x, y] = bitOp v "SGte" ty [x, y]
515doOp v (LSGt (ATInt (ITFixed ty))) [x, y] = bitOp v "SGt" ty [x, y]
516doOp v (LLt (ITFixed ty)) [x, y] = bitOp v "Lt" ty [x, y]
517doOp v (LLe (ITFixed ty)) [x, y] = bitOp v "Lte" ty [x, y]
518doOp v (LGe (ITFixed ty)) [x, y] = bitOp v "Gte" ty [x, y]
519doOp v (LGt (ITFixed ty)) [x, y] = bitOp v "Gt" ty [x, y]
521doOp v (LSHL (ITFixed ty)) [x, y] = bitOp v "Shl" ty [x, y]
522doOp v (LLSHR (ITFixed ty)) [x, y] = bitOp v "LShr" ty [x, y]
523doOp v (LASHR (ITFixed ty)) [x, y] = bitOp v "AShr" ty [x, y]
524doOp v (LAnd (ITFixed ty)) [x, y] = bitOp v "And" ty [x, y]
525doOp v (LOr (ITFixed ty)) [x, y] = bitOp v "Or" ty [x, y]
526doOp v (LXOr (ITFixed ty)) [x, y] = bitOp v "Xor" ty [x, y]
527doOp v (LCompl (ITFixed ty)) [x] = bitOp v "Compl" ty [x]
529doOp v (LPlus (ATInt (ITFixed ty))) [x, y] = bitOp v "Plus" ty [x, y]
530doOp v (LMinus (ATInt (ITFixed ty))) [x, y] = bitOp v "Minus" ty [x, y]
531doOp v (LTimes (ATInt (ITFixed ty))) [x, y] = bitOp v "Times" ty [x, y]
532doOp v (LUDiv (ITFixed ty)) [x, y] = bitOp v "UDiv" ty [x, y]
533doOp v (LSDiv (ATInt (ITFixed ty))) [x, y] = bitOp v "SDiv" ty [x, y]
534doOp v (LURem (ITFixed ty)) [x, y] = bitOp v "URem" ty [x, y]
535doOp v (LSRem (ATInt (ITFixed ty))) [x, y] = bitOp v "SRem" ty [x, y]
537doOp v (LSExt (ITFixed from) ITBig) [x]
538 = v ++ "MKBIGSI(vm, (" ++ signedTy from ++ ")" ++ creg x ++ "->info.bits" ++ show (nativeTyWidth from) ++ ")"
539doOp v (LSExt ITNative (ITFixed to)) [x]
540 = v ++ "idris_b" ++ show (nativeTyWidth to) ++ "const(vm, GETINT(" ++ creg x ++ "))"
541doOp v (LSExt ITChar (ITFixed to)) [x]
542 = doOp v (LSExt ITNative (ITFixed to)) [x]
543doOp v (LSExt (ITFixed from) ITNative) [x]
544 = v ++ "MKINT((i_int)((" ++ signedTy from ++ ")" ++ creg x ++ "->info.bits" ++ show (nativeTyWidth from) ++ "))"
545doOp v (LSExt (ITFixed from) ITChar) [x]
546 = doOp v (LSExt (ITFixed from) ITNative) [x]
547doOp v (LSExt (ITFixed from) (ITFixed to)) [x]
548 | nativeTyWidth from < nativeTyWidth to = bitCoerce v "S" from to x
549doOp v (LZExt ITNative (ITFixed to)) [x]
550 = v ++ "idris_b" ++ show (nativeTyWidth to) ++ "const(vm, (uintptr_t)GETINT(" ++ creg x ++ "))"
551doOp v (LZExt ITChar (ITFixed to)) [x]
552 = doOp v (LZExt ITNative (ITFixed to)) [x]
553doOp v (LZExt (ITFixed from) ITNative) [x]
554 = v ++ "MKINT((i_int)" ++ creg x ++ "->info.bits" ++ show (nativeTyWidth from) ++ ")"
555doOp v (LZExt (ITFixed from) ITChar) [x]
556 = doOp v (LZExt (ITFixed from) ITNative) [x]
557doOp v (LZExt (ITFixed from) ITBig) [x]
558 = v ++ "MKBIGUI(vm, " ++ creg x ++ "->info.bits" ++ show (nativeTyWidth from) ++ ")"
559doOp v (LZExt ITNative ITBig) [x]
560 = v ++ "MKBIGUI(vm, (uintptr_t)GETINT(" ++ creg x ++ "))"
561doOp v (LZExt (ITFixed from) (ITFixed to)) [x]
562 | nativeTyWidth from < nativeTyWidth to = bitCoerce v "Z" from to x
563doOp v (LTrunc ITNative (ITFixed to)) [x]
564 = v ++ "idris_b" ++ show (nativeTyWidth to) ++ "const(vm, GETINT(" ++ creg x ++ "))"
565doOp v (LTrunc ITChar (ITFixed to)) [x]
566 = doOp v (LTrunc ITNative (ITFixed to)) [x]
567doOp v (LTrunc (ITFixed from) ITNative) [x]
568 = v ++ "MKINT((i_int)" ++ creg x ++ "->info.bits" ++ show (nativeTyWidth from) ++ ")"
569doOp v (LTrunc (ITFixed from) ITChar) [x]
570 = doOp v (LTrunc (ITFixed from) ITNative) [x]
571doOp v (LTrunc ITBig (ITFixed IT64)) [x]
572 = v ++ "idris_b64const(vm, ISINT(" ++ creg x ++ ") ? GETINT(" ++ creg x ++ ") : idris_truncBigB64(GETMPZ(" ++ creg x ++ ")))"
573doOp v (LTrunc ITBig (ITFixed to)) [x]
574 = v ++ "idris_b" ++ show (nativeTyWidth to) ++ "const(vm, ISINT(" ++ creg x ++ ") ? GETINT(" ++ creg x ++ ") : mpz_get_ui(GETMPZ(" ++ creg x ++ ")))"
575doOp v (LTrunc (ITFixed from) (ITFixed to)) [x]
576 | nativeTyWidth from > nativeTyWidth to = bitCoerce v "T" from to x
578doOp v LFExp [x] = v ++ flUnOp "exp" (creg x)
579doOp v LFLog [x] = v ++ flUnOp "log" (creg x)
580doOp v LFSin [x] = v ++ flUnOp "sin" (creg x)
581doOp v LFCos [x] = v ++ flUnOp "cos" (creg x)
582doOp v LFTan [x] = v ++ flUnOp "tan" (creg x)
583doOp v LFASin [x] = v ++ flUnOp "asin" (creg x)
584doOp v LFACos [x] = v ++ flUnOp "acos" (creg x)
585doOp v LFATan [x] = v ++ flUnOp "atan" (creg x)
586doOp v LFSqrt [x] = v ++ flUnOp "sqrt" (creg x)
587doOp v LFFloor [x] = v ++ flUnOp "floor" (creg x)
588doOp v LFCeil [x] = v ++ flUnOp "ceil" (creg x)
589doOp v LFNegate [x] = v ++ "MKFLOAT(vm, -GETFLOAT(" ++ (creg x) ++ "))"
591-- String functions which don't need to know we're UTF8
592doOp v LStrConcat [l,r] = v ++ "idris_concat(vm, " ++ creg l ++ ", " ++ creg r ++ ")"
593doOp v LStrLt [l,r] = v ++ "idris_strlt(vm, " ++ creg l ++ ", " ++ creg r ++ ")"
594doOp v LStrEq [l,r] = v ++ "idris_streq(vm, " ++ creg l ++ ", " ++ creg r ++ ")"
596doOp v LReadStr [_] = v ++ "idris_readStr(vm, stdin)"
597doOp v LWriteStr [_,s]
598 = v ++ "MKINT((i_int)(idris_writeStr(stdout"
603-- String functions which need to know we're UTF8
604doOp v LStrHead [x] = v ++ "idris_strHead(vm, " ++ creg x ++ ")"
605doOp v LStrTail [x] = v ++ "idris_strTail(vm, " ++ creg x ++ ")"
606doOp v LStrCons [x, y] = v ++ "idris_strCons(vm, " ++ creg x ++ "," ++ creg y ++ ")"
607doOp v LStrIndex [x, y] = v ++ "idris_strIndex(vm, " ++ creg x ++ "," ++ creg y ++ ")"
608doOp v LStrRev [x] = v ++ "idris_strRev(vm, " ++ creg x ++ ")"
609doOp v LStrLen [x] = v ++ "idris_strlen(vm, " ++ creg x ++ ")"
610doOp v LStrSubstr [x,y,z] = v ++ "idris_substr(vm, " ++ creg x ++ "," ++ creg y ++ "," ++ creg z ++ ")"
612doOp v LFork [x] = v ++ "MKPTR(vm, vmThread(vm, " ++ cname (sMN 0 "EVAL") ++ ", " ++ creg x ++ "))"
613doOp v LPar [x] = v ++ creg x -- "MKPTR(vm, vmThread(vm, " ++ cname (MN 0 "EVAL") ++ ", " ++ creg x ++ "))"
614doOp v (LChInt ITNative) args = v ++ creg (last args)
615doOp v (LChInt ITChar) args = doOp v (LChInt ITNative) args
616doOp v (LIntCh ITNative) args = v ++ creg (last args)
617doOp v (LIntCh ITChar) args = doOp v (LIntCh ITNative) args
619doOp v LSystemInfo [x] = v ++ "idris_systemInfo(vm, " ++ creg x ++ ")"
620doOp v LCrash [x] = "idris_crash(GETSTR(" ++ creg x ++ "))"
621doOp v LNoOp args = v ++ creg (last args)
623-- Pointer primitives (declared as %extern in Builtins.idr)
624doOp v (LExternal rf) [_,x]
625 | rf == sUN "prim__readFile"
626 = v ++ "idris_readStr(vm, GETPTR(" ++ creg x ++ "))"
627doOp v (LExternal rf) [_,len,x]
628 | rf == sUN "prim__readChars"
629 = v ++ "idris_readChars(vm, GETINT(" ++ creg len ++
630 "), GETPTR(" ++ creg x ++ "))"
631doOp v (LExternal wf) [_,x,s]
632 | wf == sUN "prim__writeFile"
633 = v ++ "MKINT((i_int)(idris_writeStr(GETPTR(" ++ creg x
636doOp v (LExternal si) [] | si == sUN "prim__stdin" = v ++ "MKPTR(vm, stdin)"
637doOp v (LExternal so) [] | so == sUN "prim__stdout" = v ++ "MKPTR(vm, stdout)"
638doOp v (LExternal se) [] | se == sUN "prim__stderr" = v ++ "MKPTR(vm, stderr)"
640doOp v (LExternal vm) [_] | vm == sUN "prim__vm" = v ++ "MKPTR(vm, vm)"
641doOp v (LExternal nul) [] | nul == sUN "prim__null" = v ++ "MKPTR(vm, NULL)"
642doOp v (LExternal eqp) [x, y] | eqp == sUN "prim__eqPtr"
643 = v ++ "MKINT((i_int)(GETPTR(" ++ creg x ++ ") == GETPTR(" ++ creg y ++ ")))"
644doOp v (LExternal eqp) [x, y] | eqp == sUN "prim__eqManagedPtr"
645 = v ++ "MKINT((i_int)(GETMPTR(" ++ creg x ++ ") == GETMPTR(" ++ creg y ++ ")))"
646doOp v (LExternal rp) [p, i] | rp == sUN "prim__registerPtr"
647 = v ++ "MKMPTR(vm, GETPTR(" ++ creg p ++ "), GETINT(" ++ creg i ++ "))"
648doOp v (LExternal pk) [_, p, o] | pk == sUN "prim__peek8"
649 = v ++ "idris_peekB8(vm," ++ creg p ++ "," ++ creg o ++")"
650doOp v (LExternal pk) [_, p, o, x] | pk == sUN "prim__poke8"
651 = v ++ "idris_pokeB8(" ++ creg p ++ "," ++ creg o ++ "," ++ creg x ++ ")"
652doOp v (LExternal pk) [_, p, o] | pk == sUN "prim__peek16"
653 = v ++ "idris_peekB16(vm," ++ creg p ++ "," ++ creg o ++")"
654doOp v (LExternal pk) [_, p, o, x] | pk == sUN "prim__poke16"
655 = v ++ "idris_pokeB16(" ++ creg p ++ "," ++ creg o ++ "," ++ creg x ++ ")"
656doOp v (LExternal pk) [_, p, o] | pk == sUN "prim__peek32"
657 = v ++ "idris_peekB32(vm," ++ creg p ++ "," ++ creg o ++")"
658doOp v (LExternal pk) [_, p, o, x] | pk == sUN "prim__poke32"
659 = v ++ "idris_pokeB32(" ++ creg p ++ "," ++ creg o ++ "," ++ creg x ++ ")"
660doOp v (LExternal pk) [_, p, o] | pk == sUN "prim__peek64"
661 = v ++ "idris_peekB64(vm," ++ creg p ++ "," ++ creg o ++")"
662doOp v (LExternal pk) [_, p, o, x] | pk == sUN "prim__poke64"
663 = v ++ "idris_pokeB64(" ++ creg p ++ "," ++ creg o ++ "," ++ creg x ++ ")"
664doOp v (LExternal pk) [_, p, o] | pk == sUN "prim__peekPtr"
665 = v ++ "idris_peekPtr(vm," ++ creg p ++ "," ++ creg o ++")"
666doOp v (LExternal pk) [_, p, o, x] | pk == sUN "prim__pokePtr"
667 = v ++ "idris_pokePtr(" ++ creg p ++ "," ++ creg o ++ "," ++ creg x ++ ")"
668doOp v (LExternal pk) [_, p, o, x] | pk == sUN "prim__pokeDouble"
669 = v ++ "idris_pokeDouble(" ++ creg p ++ "," ++ creg o ++ "," ++ creg x ++ ")"
670doOp v (LExternal pk) [_, p, o] | pk == sUN "prim__peekDouble"
671 = v ++ "idris_peekDouble(vm," ++ creg p ++ "," ++ creg o ++")"
672doOp v (LExternal pk) [_, p, o, x] | pk == sUN "prim__pokeSingle"
673 = v ++ "idris_pokeSingle(" ++ creg p ++ "," ++ creg o ++ "," ++ creg x ++ ")"
674doOp v (LExternal pk) [_, p, o] | pk == sUN "prim__peekSingle"
675 = v ++ "idris_peekSingle(vm," ++ creg p ++ "," ++ creg o ++")"
676doOp v (LExternal pk) [] | pk == sUN "prim__sizeofPtr"
677 = v ++ "MKINT(sizeof(void*))"
678doOp v (LExternal mpt) [p] | mpt == sUN "prim__asPtr"
679 = v ++ "MKPTR(vm, GETMPTR("++ creg p ++"))"
680doOp v (LExternal offs) [p, n] | offs == sUN "prim__ptrOffset"
681 = v ++ "MKPTR(vm, (void *)((char *)GETPTR(" ++ creg p ++ ") + GETINT(" ++ creg n ++ ")))"
682doOp _ op args = error $ "doOp not implemented (" ++ show (op, args) ++ ")"
685flUnOp :: String -> String -> String
686flUnOp name val = "MKFLOAT(vm, " ++ name ++ "(GETFLOAT(" ++ val ++ ")))"
688-------------------- Interface file generation
690-- First, the wrappers in the C file
692ifaceC :: Export -> String
693ifaceC (ExportData n) = "typedef VAL " ++ cdesc n ++ ";\n"
694ifaceC (ExportFun n cn ret args)
695 = ctype ret ++ " " ++ cdesc cn ++
696 "(VM* vm" ++ showArgs (zip argNames args) ++ ") {\n"
697 ++ mkBody n (zip argNames args) ret ++ "}\n\n"
698 where showArgs [] = ""
699 showArgs ((n, t) : ts) = ", " ++ ctype t ++ " " ++ n ++
702 argNames = zipWith (++) (repeat "arg") (map show [0..])
704mkBody n as t = indent 1 ++ "INITFRAME;\n" ++
705 indent 1 ++ "RESERVE(" ++ show (max (length as) 3) ++ ");\n" ++
706 push 0 as ++ call n ++ retval t
708 push i ((n, t) : ts) = indent 1 ++ c_irts (toFType t)
709 ("TOP(" ++ show i ++ ") = ") n
710 ++ ";\n" ++ push (i + 1) ts
712 call _ = indent 1 ++ "STOREOLD;\n" ++
713 indent 1 ++ "BASETOP(0);\n" ++
714 indent 1 ++ "ADDTOP(" ++ show (length as) ++ ");\n" ++
715 indent 1 ++ "CALL(" ++ cname n ++ ");\n"
718 = indent 1 ++ "TOP(0) = NULL;\n" ++
719 indent 1 ++ "TOP(1) = NULL;\n" ++
720 indent 1 ++ "TOP(2) = RVAL;\n" ++
721 indent 1 ++ "STOREOLD;\n" ++
722 indent 1 ++ "BASETOP(0);\n" ++
723 indent 1 ++ "ADDTOP(3);\n" ++
724 indent 1 ++ "CALL(" ++ cname (sUN "call__IO") ++ ");\n" ++
726 retval t = indent 1 ++ "return " ++ irts_c (toFType t) "RVAL" ++ ";\n"
729 | c == sUN "C_Str" = "char*"
730 | c == sUN "C_Float" = "float"
731 | c == sUN "C_Ptr" = "void*"
732 | c == sUN "C_MPtr" = "void*"
733 | c == sUN "C_Unit" = "void"
734ctype (FApp c [_,ity])
735 | c == sUN "C_IntT" = carith ity
737 | c == sUN "C_Any" = "VAL"
739ctype FUnknown = "void*"
740ctype (FIO t) = ctype t
741ctype t = error "Can't happen: Not a valid interface type " ++ show t
744 | i == sUN "C_IntChar" = "char"
745 | i == sUN "C_IntNative" = "int"
746 | i == sUN "C_IntBits8" = "uint8_t"
747 | i == sUN "C_IntBits16" = "uint16_t"
748 | i == sUN "C_IntBits32" = "uint32_t"
749 | i == sUN "C_IntBits64" = "uint64_t"
750carith t = error $ "Can't happen: Not an exportable arithmetic type " ++ show t
753cdesc s = error "Can't happen: Not a valid C name"
755-- Then, the header files
757codegenH :: [ExportIFace] -> IO ()
758codegenH es = mapM_ writeIFace es
760writeIFace :: ExportIFace -> IO ()
761writeIFace (Export ffic hdr exps)
762 | ffic == sNS (sUN "FFI_C") ["FFI_C"]
763 = do let hfile = "#ifndef " ++ hdr_guard hdr ++ "\n" ++
764 "#define " ++ hdr_guard hdr ++ "\n\n" ++
765 "#include <idris_rts.h>\n\n" ++
766 concatMap hdr_export exps ++ "\n" ++
769 | otherwise = return ()
771hdr_guard x = "__" ++ map hchar x
772 where hchar x | isAlphaNum x = toUpper x
775hdr_export :: Export -> String
776hdr_export (ExportData n) = "typedef VAL " ++ cdesc n ++ ";\n"
777hdr_export (ExportFun n cn ret args)
778 = ctype ret ++ " " ++ cdesc cn ++
779 "(VM* vm" ++ showArgs (zip argNames args) ++ ");\n"
780 where showArgs [] = ""
781 showArgs ((n, t) : ts) = ", " ++ ctype t ++ " " ++ n ++
784 argNames = zipWith (++) (repeat "arg") (map show [0..])
786------------------ Callback wrapper generation ----------------
787-- Generate callback wrappers and a function to select the
788-- correct wrapper function to pass.
789-- TODO: This is limited to functions that are specified in
790-- the foreign call. Otherwise we would have to generate wrappers for all
791-- functions with correct arity or do flow analysis
792-- to find all possible inputs to the foreign call.
793genWrappers :: [(Name, [BC])] -> String
795 tags = nubBy (\x y -> snd x == snd y) $ concatMap (getCallback . snd) bcs
799 t -> concatMap genWrapper t ++ genDispatcher t
801genDispatcher :: [(FDesc, Int)] -> String
802genDispatcher tags = "void* _idris_get_wrapper(VAL con)\n" ++
804 indent 1 ++ "switch(TAG(con)) {\n" ++
805 concatMap makeSwitch tags ++
807 indent 1 ++ "fprintf(stderr, \"No wrapper for callback\");\n" ++
808 indent 1 ++ "exit(-1);\n" ++
811 makeSwitch (_, tag) =
812 indent 1 ++ "case " ++ show tag ++ ":\n" ++
813 indent 2 ++ "return (void*) &" ++ wrapperName tag ++ ";\n"
815genWrapper :: (FDesc, Int) -> String
816genWrapper (desc, tag) | (toFType desc) == FFunctionIO =
817 error "Cannot create C callbacks for IO functions, wrap them with unsafePerformIO.\n"
818genWrapper (desc, tag) = ret ++ " " ++ wrapperName tag ++ "(" ++
819 renderArgs argList ++")\n" ++
821 (if ret /= "void" then indent 1 ++ ret ++ " ret;\n" else "") ++
822 indent 1 ++ "VM* vm = get_vm();\n" ++
823 indent 1 ++ "if (vm == NULL) {\n" ++
824 indent 2 ++ "vm = idris_vm();\n" ++
826 indent 1 ++ "INITFRAME;\n" ++
827 indent 1 ++ "RESERVE(" ++ show (len + 1) ++ ");\n" ++
828 indent 1 ++ "allocCon(REG1, vm, " ++ show tag ++ ",0 , 0);\n" ++
829 indent 1 ++ "TOP(0) = REG1;\n" ++
832 then indent 1 ++ "ret = " ++ irts_c (toFType ft) "RVAL" ++ ";\n"
833 ++ indent 1 ++ "return ret;\n}\n\n"
837 argList = zip (args desc) [0..]
840 applyArgs (x:y:xs) = push 1 [x] ++
841 indent 1 ++ "STOREOLD;\n" ++
842 indent 1 ++ "BASETOP(0);\n" ++
843 indent 1 ++ "ADDTOP(2);\n" ++
844 indent 1 ++ "CALL(_idris__123_APPLY_95_0_125_);\n" ++
845 indent 1 ++ "TOP(0)=REG1;\n" ++
847 applyArgs x = push 1 x ++
848 indent 1 ++ "STOREOLD;\n" ++
849 indent 1 ++ "BASETOP(0);\n" ++
850 indent 1 ++ "ADDTOP(" ++ show (length x + 1) ++ ");\n" ++
851 indent 1 ++ "CALL(_idris__123_APPLY_95_0_125_);\n"
852 renderArgs [] = "void"
853 renderArgs [((s, _), n)] = s ++ " a" ++ (show n)
854 renderArgs (((s, _), n):xs) = s ++ " a" ++ (show n) ++ ", " ++
857 | c == sUN "C_FnBase" = (ctype ty, ty)
858 | c == sUN "C_FnIO" = (ctype ty, ty)
859 | c == sUN "C_FnT" = rty ty
860 rty (FApp c [_,_,ty,fn])
861 | c == sUN "C_Fn" = rty fn
864 | c == sUN "C_FnBase" = []
865 | c == sUN "C_FnIO" = []
866 | c == sUN "C_FnT" = args ty
867 args (FApp c [_,_,ty,fn])
868 | toFType ty == FUnit = []
869 | c == sUN "C_Fn" = (ctype ty, ty) : args fn
872 push i (((c, t), n) : ts) = indent 1 ++ c_irts (toFType t)
873 ("TOP(" ++ show i ++ ") = ") ("a" ++ show n)
874 ++ ";\n" ++ push (i + 1) ts
876wrapperName :: Int -> String
877wrapperName tag = "_idris_wrapper_" ++ show tag
879getCallback :: [BC] -> [(FDesc, Int)]
880getCallback bc = getCallback' (reverse bc)
882 getCallback' (x:xs) = case hasCallback x of
883 [] -> getCallback' xs
884 cbs -> case findCons cbs xs of
885 [] -> error "Idris function couldn't be wrapped."
888 findCons (c:cs) xs = findCon c xs ++ findCons cs xs
890 findCon c ((MKCON l loc tag args):xs) | snd c == l = [(fst c, tag)]
891 findCon c (_:xs) = findCon c xs
894hasCallback :: BC -> [(FDesc, Reg)]
895hasCallback (FOREIGNCALL l rty (FStr fn) args) = filter isFn args
897 isFn (desc,_) = case toFType desc of
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