1 /* --------------------------------------------------------------------------
2 * Connections between components of the Hugs system
4 * The Hugs 98 system is Copyright (c) Mark P Jones, Alastair Reid, the
5 * Yale Haskell Group, and the Oregon Graduate Institute of Science and
6 * Technology, 1994-1999, All rights reserved. It is distributed as
7 * free software under the license in the file "License", which is
8 * included in the distribution.
10 * $RCSfile: connect.h,v $
12 * $Date: 1999/11/12 17:32:38 $
13 * ------------------------------------------------------------------------*/
15 /* --------------------------------------------------------------------------
17 * ------------------------------------------------------------------------*/
19 extern Bool haskell98; /* TRUE => Haskell 98 compatibility*/
20 extern Module modulePrelude;
22 /* --------------------------------------------------------------------------
23 * Primitive constructor functions
24 * ------------------------------------------------------------------------*/
26 extern Name nameFalse, nameTrue;
27 extern Name nameNil, nameCons;
28 extern Name nameJust, nameNothing;
29 extern Name nameLeft, nameRight;
32 extern Name nameLT, nameEQ;
34 extern Name nameFst, nameSnd; /* standard combinators */
35 extern Name nameId, nameOtherwise;
36 extern Name nameNegate, nameFlip; /* primitives reqd for parsing */
37 extern Name nameFrom, nameFromThen;
38 extern Name nameFromTo, nameFromThenTo;
39 extern Name nameFatbar, nameFail; /* primitives reqd for translation */
40 extern Name nameIf, nameSel;
41 extern Name nameCompAux;
42 extern Name namePmInt, namePmFlt; /* primitives for pattern matching */
43 extern Name namePmInteger;
45 extern Name namePmNpk, namePmSub; /* primitives for (n+k) patterns */
47 extern Name nameError; /* For runtime error messages */
48 extern Name nameUndefined; /* A generic undefined value */
49 extern Name nameBlackHole; /* For GC-detected black hole */
50 extern Name nameInd; /* For dict indirection */
51 extern Name nameAnd, nameOr; /* For optimisation of && and || */
52 extern Name nameFromInt, nameFromDouble;/*coercion of numerics */
53 extern Name nameFromInteger;
54 extern Name nameEq, nameCompare; /* names used for deriving */
55 extern Name nameMinBnd, nameMaxBnd;
56 extern Name nameIndex, nameInRange;
57 extern Name nameRange;
58 extern Name nameLe, nameGt;
59 extern Name nameShowsPrec, nameReadsPrec;
60 extern Name nameMult, namePlus;
61 extern Name nameConCmp, nameEnRange;
62 extern Name nameEnIndex, nameEnInRng;
63 extern Name nameEnToEn, nameEnFrEn;
64 extern Name nameEnFrom, nameEnFrTh;
65 extern Name nameEnFrTo;
66 extern Name nameComp, nameApp; /* composition and append */
67 extern Name nameShowField; /* display single field */
68 extern Name nameShowParen; /* wrap with parens */
69 extern Name nameReadField; /* read single field */
70 extern Name nameReadParen; /* unwrap from parens */
71 extern Name nameLex; /* lexer */
72 extern Name nameRangeSize; /* calculate size of index range */
73 extern Class classMonad; /* Monads */
74 extern Name nameReturn, nameBind; /* for translating monad comps */
75 extern Name nameMFail;
76 extern Name nameListMonad; /* builder function for List Monad */
77 extern Name namePrint; /* printing primitive */
78 extern Name nameCreateAdjThunk; /* f-x-dyn: create adjustor thunk */
79 extern Text textPrelude;
80 extern Text textNum; /* used to process default decls */
81 extern Text textCcall; /* used to process foreign import */
82 extern Text textStdcall; /* ... and foreign export */
85 extern Text textPlus; /* Used to recognise n+k patterns */
88 extern Name nameNoRec; /* The empty record */
89 extern Type typeNoRow; /* The empty row */
90 extern Type typeRec; /* Record formation */
91 extern Kind extKind; /* Kind of extension, *->row->row */
92 extern Name nameRecExt; /* Extend a record */
93 extern Name nameRecBrk; /* Break a record */
94 extern Name nameAddEv; /* Addition of evidence values */
95 extern Name nameRecSel; /* Select a record */
96 extern Name nameRecShw; /* Show a record */
97 extern Name nameShowRecRow; /* Used to output rows */
98 extern Name nameRecEq; /* Compare records */
99 extern Name nameEqRecRow; /* Used to compare rows */
100 extern Name nameInsFld; /* Field insertion routine */
103 extern String repeatStr; /* Repeat last command string */
104 extern String hugsEdit; /* String for editor command */
105 extern String hugsPath; /* String for file search path */
106 extern String projectPath; /* String for project search path */
108 extern Type typeArrow; /* Builtin type constructors */
109 extern Type typeList;
110 extern Type typeUnit;
112 #define fn(from,to) ap(ap(typeArrow,from),to) /* make type: from -> to */
114 extern List stdDefaults; /* List of standard default types */
116 extern Class classEq; /* `standard' classes */
117 extern Class classOrd;
118 extern Class classShow;
119 extern Class classRead;
120 extern Class classIx;
121 extern Class classEnum;
122 extern Class classBounded;
124 extern Class classReal; /* `numeric' classes */
125 extern Class classIntegral;
126 extern Class classRealFrac;
127 extern Class classRealFloat;
128 extern Class classFractional;
129 extern Class classFloating;
130 extern Class classNum;
132 extern Cell *CStackBase; /* pointer to base of C stack */
134 extern List tyconDefns; /* list of type constructor defns */
135 extern List typeInDefns; /* list of synonym restrictions */
136 extern List valDefns; /* list of value definitions */
137 extern List classDefns; /* list of class definitions */
138 extern List instDefns; /* list of instance definitions */
139 extern List selDefns; /* list of selector lists */
140 extern List genDefns; /* list of generated defns */
141 extern List primDefns; /* list of primitive definitions */
142 extern List unqualImports; /* unqualified import list */
143 extern List defaultDefns; /* default definitions (if any) */
144 extern Int defaultLine; /* line in which default defs occur*/
145 extern List evalDefaults; /* defaults for evaluator */
146 extern Cell inputExpr; /* evaluator input expression */
147 extern Cell inputContext; /* evaluator input expression */
148 extern Addr inputCode; /* Code for compiled input expr */
150 extern Int whnfArgs; /* number of args of term in whnf */
151 extern Cell whnfHead; /* head of term in whnf */
152 extern Int whnfInt; /* integer value of term in whnf */
153 extern Float whnfFloat; /* float value of term in whnf */
154 extern Long numCells; /* number of cells allocated */
155 extern Int numGcs; /* number of garbage collections */
156 extern Bool broken; /* indicates interrupt received */
157 extern Bool preludeLoaded; /* TRUE => prelude has been loaded */
159 extern Bool gcMessages; /* TRUE => print GC messages */
160 extern Bool literateScripts; /* TRUE => default lit scripts */
161 extern Bool literateErrors; /* TRUE => report errs in lit scrs */
162 extern Bool showInstRes; /* TRUE => show instance resolution */
164 extern Int cutoff; /* Constraint Cutoff depth */
167 extern String preprocessor; /* preprocessor command */
171 extern Bool debugCode; /* TRUE => print G-code to screen */
174 extern Bool debugSC; /* TRUE => print SC to screen */
175 extern Void printSc Args((FILE*, Text, Int, Cell));
177 extern Bool kindExpert; /* TRUE => display kind errors in */
179 extern Bool allowOverlap; /* TRUE => allow overlapping insts */
181 /* --------------------------------------------------------------------------
182 * Function prototypes etc...
183 * ------------------------------------------------------------------------*/
185 extern Void everybody Args((Int));
187 #define RESET 1 /* reset subsystem */
188 #define MARK 2 /* mark parts of graph in use by subsystem */
189 #define INSTALL 3 /* install subsystem (executed once only) */
190 #define EXIT 4 /* Take action immediately before exit() */
191 #define BREAK 5 /* Take action after program break */
192 #define GCDONE 6 /* Restore subsystem invariantss after GC */
195 extern Void setGoal Args((String, Target));
196 extern Void soFar Args((Target));
197 extern Void done Args((Void));
198 extern String fromEnv Args((String,String));
199 extern Bool chase Args((List));
201 extern Void storage Args((Int));
203 extern Void input Args((Int));
204 extern Void consoleInput Args((String));
205 extern Void projInput Args((String));
206 extern Void stringInput Args((String));
207 extern Void parseScript Args((String,Long));
208 extern Void parseExp Args((Void));
209 extern Void parseContext Args((Void));
210 extern String readFilename Args((Void));
211 extern String readLine Args((Void));
212 extern Syntax defaultSyntax Args((Text));
213 extern Syntax syntaxOf Args((Name));
214 extern String unlexChar Args((Char,Char));
215 extern Void printString Args((String));
217 extern Void substitution Args((Int));
218 extern Void optimiser Args((Int));
220 extern Void staticAnalysis Args((Int));
221 extern Void startModule Args((Cell));
222 extern Void setExportList Args((List));
223 extern Void setExports Args((List));
224 extern Void addQualImport Args((Text,Text));
225 extern Void addUnqualImport Args((Text,List));
227 extern Void tyconDefn Args((Int,Cell,Cell,Cell));
228 extern Void setTypeIns Args((List));
229 extern Void clearTypeIns Args((Void));
230 extern Type fullExpand Args((Type));
231 extern Bool isAmbiguous Args((Type));
232 extern Void ambigError Args((Int,String,Cell,Type));
233 extern Void classDefn Args((Int,Cell,List,List));
234 extern Void instDefn Args((Int,Cell,Cell));
235 extern Void addTupInst Args((Class,Int));
237 extern Inst addRecShowInst Args((Class,Ext));
238 extern Inst addRecEqInst Args((Class,Ext));
240 extern List typeVarsIn Args((Cell,List,List,List));
241 extern List oclose Args((List,List));
242 extern List zonkTyvarsIn Args((Type,List));
243 extern Type zonkTyvar Args((Int));
244 extern Type zonkType Args((Type,Int));
245 extern Void primDefn Args((Cell,List,Cell));
246 extern Void defaultDefn Args((Int,List));
247 extern Void checkExp Args((Void));
248 extern Void checkDefns Args((Void));
249 extern Bool h98Pred Args((Bool,Cell));
250 extern Cell h98Context Args((Bool,List));
251 extern Void h98CheckCtxt Args((Int,String,Bool,List,Inst));
252 extern Void h98CheckType Args((Int,String,Cell,Type));
253 extern Void h98DoesntSupport Args((Int,String));
255 extern Void typeChecker Args((Int));
256 extern Type typeCheckExp Args((Bool));
257 extern Void typeCheckDefns Args((Void));
258 extern Cell provePred Args((Kinds,List,Cell));
259 extern List simpleContext Args((List,Int));
260 extern Cell rhsExpr Args((Cell));
261 extern Int rhsLine Args((Cell));
262 extern Bool isProgType Args((List,Type));
263 extern Cell superEvid Args((Cell,Class,Class));
264 extern Void linkPreludeTC Args((Void));
265 extern Void linkPreludeCM Args((Void));
267 extern Void compiler Args((Int));
268 extern Void compileDefns Args((Void));
269 extern Void compileExp Args((Void));
270 extern Bool failFree Args((Cell));
271 extern Int discrArity Args((Cell));
273 extern Addr codeGen Args((Name,Int,Cell));
274 extern Void implementCfun Args((Name,List));
276 extern Name implementRecShw Args((Text,Cell));
277 extern Name implementRecEq Args((Text,Cell));
279 extern Void addCfunTable Args((Tycon));
280 extern Name succCfun Args((Name));
281 extern Name nextCfun Args((Name,Name));
282 extern Name cfunByNum Args((Name,Int));
283 extern Void unwind Args((Cell));
284 extern Void run Args((Addr,StackPtr));
286 extern Void eval Args((Cell));
287 extern Cell evalWithNoError Args((Cell));
288 extern Void evalFails Args((StackPtr));
290 extern Void abandon Args((String,Cell));
291 extern Void outputString Args((FILE *));
292 extern Void dialogue Args((Cell));
293 #define consChar(c) ap(nameCons,mkChar(c))
295 extern Int shellEsc Args((String));
296 extern Int getTerminalWidth Args((Void));
297 extern Void normalTerminal Args((Void));
298 extern Void noechoTerminal Args((Void));
299 extern Int readTerminalChar Args((Void));
300 extern Void gcStarted Args((Void));
301 extern Void gcScanning Args((Void));
302 extern Void gcRecovered Args((Int));
303 extern Void gcCStack Args((Void));
304 extern Void needPrims Args((Int));
305 extern List calcFunDepsPreds Args((List));
306 extern Inst findInstFor Args((Cell,Int));
308 extern Type primType( Int /*AsmMonad*/ monad, String a_kinds, String r_kinds );
309 #define aVar mkOffset(0) /* Simple skeleton for type var */
311 /*-------------------------------------------------------------------------*/
313 /*---------------------------------------------------------------------------
314 * Interrupting execution (signals, allowBreak):
315 *-------------------------------------------------------------------------*/
317 extern Bool breakOn Args((Bool));
319 extern Bool broken; /* indicates interrupt received */
321 #ifndef SIGBREAK /* Sigh, not defined in cygwin32 beta release 16 */
325 /* allowBreak: call to allow user to interrupt computation
326 * ctrlbrk: set control break handler
331 # define allowBreak() kbhit()
332 #else /* !HUGS_FOR_WINDOWS */
333 # if HAVE_SIGPROCMASK
335 # define ctrlbrk(bh) { sigset_t mask; \
337 sigemptyset(&mask); \
338 sigaddset(&mask, SIGINT); \
339 sigprocmask(SIG_UNBLOCK, &mask, NULL); \
342 # define ctrlbrk(bh) signal(SIGINT,bh)
345 extern int time_release;
346 extern int allow_break_count;
347 # define allowBreak() if (time_release !=0 && \
348 (++allow_break_count % time_release) == 0) \
351 # define allowBreak() if (broken) { broken=FALSE; sigRaise(breakHandler); }
353 #endif /* !HUGS_FOR_WINDOWS */
355 /*---------------------------------------------------------------------------
356 * Environment variables and the registry
357 *-------------------------------------------------------------------------*/
359 /* On Win32 we can use the registry to supplement info in environment
362 /* AJG: Commented out for now for development */
363 /* #define USE_REGISTRY (HAVE_WINDOWS_H && !__MSDOS__) */
366 Bool writeRegString Args((String var, String val));
367 String readRegString Args((String var, String def));
368 Int readRegInt Args((String var, Int def));
369 Bool writeRegInt Args((String var, Int val));
372 /*---------------------------------------------------------------------------
374 *-------------------------------------------------------------------------*/
377 # include <sys/types.h>
379 #elif !HUGS_FOR_WINDOWS
380 extern int chdir Args((const char*));
386 extern int system Args((const char *));
387 extern double atof Args((const char *));
388 extern void exit Args((int));
391 #ifndef FILENAME_MAX /* should already be defined in an ANSI compiler*/
392 #define FILENAME_MAX 256
394 #if FILENAME_MAX < 256
396 #define FILENAME_MAX 256
400 /* Hack, hack: if you have dos.h, you probably have a DOS filesystem */
401 #define DOS_FILENAMES HAVE_DOS_H
402 /* ToDo: can we replace this with a feature test? */
403 #define MAC_FILENAMES SYMANTEC_C
405 #define CASE_INSENSITIVE_FILENAMES (DOS_FILENAMES | RISCOS)
407 #if CASE_INSENSITIVE_FILENAMES
409 # define filenamecmp(s1,s2) strcasecmp(s1,s2)
411 # define filenamecmp(s1,s2) _stricmp(s1,s2)
413 # define filenamecmp(s1,s2) stricmp(s1,s2)
415 # define filenamecmp(s1,s2) strcmpi(s1,s2)
418 # define filenamecmp(s1,s2) strcmp(s1,s2)
421 /*---------------------------------------------------------------------------
422 * Pipe-related operations:
424 * On Windows, many standard Unix names acquire a leading underscore.
425 * Irritating, but easy to work around.
426 *-------------------------------------------------------------------------*/
428 #if !defined(HAVE_POPEN) && defined(HAVE__POPEN)
429 #define popen(x,y) _popen(x,y)
431 #if !defined(HAVE_PCLOSE) && defined(HAVE__PCLOSE)
432 #define pclose(x) _pclose(x)
435 /*---------------------------------------------------------------------------
437 *-------------------------------------------------------------------------*/
439 #define bitArraySize(n) ((n)/bitsPerWord + 1)
440 #define placeInSet(n) ((-(n)-1)>>wordShift)
441 #define maskInSet(n) (1<<((-(n)-1)&wordMask))
443 /*---------------------------------------------------------------------------
444 * Function prototypes for code in machdep.c
445 *-------------------------------------------------------------------------*/
447 extern String findMPathname Args((String,String,String));
448 extern String findPathname Args((String,String));
450 extern Int shellEsc Args((String));
451 extern Int getTerminalWidth Args((Void));
452 extern Void normalTerminal Args((Void));
453 extern Void noechoTerminal Args((Void));
454 extern Int readTerminalChar Args((Void));
455 extern Void gcStarted Args((Void));
456 extern Void gcScanning Args((Void));
457 extern Void gcRecovered Args((Int));
458 extern Void gcCStack Args((Void));
460 /*-------------------------------------------------------------------------*/
462 extern Type typeInt64;
463 extern Type typeWord;
464 extern Type typeFloat;
465 extern Type typePrimArray;
466 extern Type typePrimByteArray;
468 extern Type typePrimMutableArray;
469 extern Type typePrimMutableByteArray;
470 extern Type typeStable;
471 extern Type typeWeak;
473 extern Type typeForeign;
474 extern Type typeMVar;
475 extern Type typeThreadId;
476 extern Type typeException;
480 extern Void foreignImport Args((Cell,Text,Pair,Cell,Cell));
481 extern List foreignImports; /* foreign import declarations */
482 extern Void implementForeignImport Args((Name));
483 extern Void foreignExport Args((Cell,Text,Cell,Cell,Cell));
484 extern List foreignExports; /* foreign export declarations */
485 extern Void implementForeignExport Args((Name));
490 Int userArity Args((Name));
493 extern List deriveEq Args((Tycon));
494 extern List deriveOrd Args((Tycon));
495 extern List deriveEnum Args((Tycon));
496 extern List deriveIx Args((Tycon));
497 extern List deriveShow Args((Tycon));
498 extern List deriveRead Args((Cell));
499 extern List deriveBounded Args((Tycon));
500 extern List checkPrimDefn Args((Triple));
502 extern Bool typeMatches Args((Type,Type));
503 extern Void evalExp Args((Void));
504 extern Void linkControl Args((Int));
505 extern Void deriveControl Args((Int));
506 extern Void translateControl Args((Int));
507 extern Void codegen Args((Int));
508 extern Void machdep Args((Int));
510 extern Void linkPreludeNames(void);
512 extern Kind starToStar; /* Type -> Type */
513 extern Type boundPair; /* (mkOffset(0),mkOffset(0)) */
514 extern Type typeOrdering;
516 extern Type conToTagType Args((Tycon));
517 extern Type tagToConType Args((Tycon));
519 #define BOGUS(k) (-9000000-(k))
521 extern Void putChr Args((Int));
522 extern Void putStr Args((String));
523 extern Void putInt Args((Int));
524 extern Void putPtr Args((Ptr));
526 extern Void unlexCharConst Args((Cell));
527 extern FILE *outputStream; /* current output stream */
528 extern Int outColumn; /* current output column number */
530 extern Void unlexStrConst Args((Text));
531 extern Void unlexVar Args((Text));
532 extern List offsetTyvarsIn Args((Type,List));
534 extern List cfunSfuns; /* List of (Cfun,[SelectorVar]) */
536 extern Void interface Args((Int));
538 extern Void getFileSize Args((String, Long *));
540 extern Void loadInterface Args((String,Long));
542 extern Void openGHCIface Args((Text));
543 extern Void loadSharedLib Args((String));
544 extern Void addGHCImports Args((Int,Text,List));
545 extern Void addGHCExports Args((Cell,List));
546 extern Void addGHCVar Args((Int,Text,Type));
547 extern Void addGHCSynonym Args((Int,Cell,List,Type));
548 extern Void addGHCDataDecl Args((Int,List,Cell,List,List));
549 extern Void addGHCNewType Args((Int,List,Cell,List,Cell));
550 extern Void addGHCClass Args((Int,List,Cell,List,List));
551 extern Void addGHCInstance Args((Int,List,Pair,Text));
552 extern Void finishInterfaces Args((Void));
554 extern Void hi_o_namesFromSrcName Args((String,String*,String* oName));
555 extern Void parseInterface Args((String,Long));
558 #define SMALL_INLINE_SIZE 9
561 // nasty hack, but seems an easy to convey the object name
562 // and size to openGHCIface
563 char nameObj[FILENAME_MAX+1];