2 /* --------------------------------------------------------------------------
3 * GHC interface file processing for Hugs
5 * Copyright (c) The University of Nottingham and Yale University, 1994-1997.
6 * All rights reserved. See NOTICE for details and conditions of use etc...
7 * Hugs version 1.4, December 1997
9 * $RCSfile: interface.c,v $
11 * $Date: 2000/01/11 14:09:17 $
12 * ------------------------------------------------------------------------*/
20 #include "Assembler.h" /* for wrapping GHC objects */
27 extern void print ( Cell, Int );
29 /* --------------------------------------------------------------------------
30 * (This comment is now out of date. JRS, 991216).
31 * The "addGHC*" functions act as "impedence matchers" between GHC
32 * interface files and Hugs. Their main job is to convert abstract
33 * syntax trees into Hugs' internal representations.
35 * The main trick here is how we deal with mutually recursive interface
38 * o As we read an import decl, we add it to a list of required imports
39 * (unless it's already loaded, of course).
41 * o Processing of declarations is split into two phases:
43 * 1) While reading the interface files, we construct all the Names,
44 * Tycons, etc declared in the interface file but we don't try to
45 * resolve references to any entities the declaration mentions.
47 * This is done by the "addGHC*" functions.
49 * 2) After reading all the interface files, we finish processing the
50 * declarations by resolving any references in the declarations
51 * and doing any other processing that may be required.
53 * This is done by the "finishGHC*" functions which use the
54 * "fixup*" functions to assist them.
56 * The interface between these two phases are the "ghc*Decls" which
57 * contain lists of decls that haven't been completed yet.
59 * ------------------------------------------------------------------------*/
63 New comment, 991216, explaining roughly how it all works.
64 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
66 Interfaces can contain references to unboxed types, and these need to
67 be handled carefully. The following is a summary of how the interface
68 loader now works. It is applied to groups of interfaces simultaneously,
69 viz, the entire Prelude at once:
71 0. Parse interfaces, chasing imports until a complete
72 strongly-connected-component of ifaces has been parsed.
73 All interfaces in this scc are processed together, in
76 1. Throw away any entity not mentioned in the export lists.
78 2. Delete type (not data or newtype) definitions which refer to
79 unknown types in their right hand sides. Because Hugs doesn't
80 know of any unboxed types, this has the side effect of removing
81 all type defns referring to unboxed types. Repeat step 2 until
82 a fixed point is reached.
84 3. Make abstract all data/newtype defns which refer to an unknown
85 type. eg, data Word = MkW Word# becomes data Word, because
86 Word# is unknown. Hugs is happy to know about abstract boxed
87 Words, but not about Word#s.
89 4. Step 2 could delete types referred to by values, instances and
90 classes. So filter all entities, and delete those referring to
91 unknown types _or_ classes. This could cause other entities
92 to become invalid, so iterate step 4 to a fixed point.
94 After step 4, the interfaces no longer contain anything
97 5. Steps 1-4 operate purely on the iface syntax trees. We now start
98 creating symbol table entries. First, create a module table
99 entry for each interface, and locate and read in the corresponding
100 object file. This is done by the startGHCModule function.
102 6. Traverse all interfaces. For each entity, create an entry in
103 the name, tycon, class or instance table, and fill in relevant
104 fields, but do not attempt to link tycon/class/instance/name uses
105 to their symbol table entries. This is done by the startGHC*
108 7. Revisit all symbol table entries created in step 6. We should
109 now be able to replace all references to tycons/classes/instances/
110 names with the relevant symbol table entries. This is done by
111 the finishGHC* functions.
113 8. Traverse all interfaces. For each iface, examine the export lists
114 and use it to build export lists in the module table. Do the
115 implicit 'import Prelude' thing if necessary. Finally, resolve
116 references in the object code for this module. This is done
117 by the finishGHCModule function.
120 /* --------------------------------------------------------------------------
121 * local function prototypes:
122 * ------------------------------------------------------------------------*/
124 static Void startGHCValue Args((Int,VarId,Type));
125 static Void finishGHCValue Args((VarId));
127 static Void startGHCSynonym Args((Int,Cell,List,Type));
128 static Void finishGHCSynonym Args((Tycon));
130 static Void startGHCClass Args((Int,List,Cell,List,List));
131 static Void finishGHCClass Args((Class));
133 static Inst startGHCInstance Args((Int,List,Pair,VarId));
134 static Void finishGHCInstance Args((Inst));
136 static Void startGHCImports Args((ConId,List));
137 static Void finishGHCImports Args((ConId,List));
139 static Void startGHCExports Args((ConId,List));
140 static Void finishGHCExports Args((ConId,List));
142 static Void finishGHCModule Args((Cell));
143 static Void startGHCModule Args((Text, Int, Text));
145 static Void startGHCDataDecl Args((Int,List,Cell,List,List));
146 static Void finishGHCDataDecl ( ConId tyc );
148 static Void startGHCNewType Args((Int,List,Cell,List,Cell));
149 static Void finishGHCNewType ( ConId tyc );
152 /* Supporting stuff for {start|finish}GHCDataDecl */
153 static List startGHCConstrs Args((Int,List,List));
154 static Name startGHCSel Args((Int,Pair));
155 static Name startGHCConstr Args((Int,Int,Triple));
159 static Kinds tvsToKind Args((List));
160 static Int arityFromType Args((Type));
161 static Int arityInclDictParams Args((Type));
162 static Bool allTypesKnown ( Type type, List aktys /* [QualId] */, ConId thisMod );
164 static List ifTyvarsIn Args((Type));
166 static Type tvsToOffsets Args((Int,Type,List));
167 static Type conidcellsToTycons Args((Int,Type));
169 static void* lookupObjName ( char* );
175 /* --------------------------------------------------------------------------
176 * Top-level interface processing
177 * ------------------------------------------------------------------------*/
179 /* getIEntityName :: I_IMPORT..I_VALUE -> ConVarId | NIL */
180 ConVarId getIEntityName ( Cell c )
183 case I_IMPORT: return NIL;
184 case I_INSTIMPORT: return NIL;
185 case I_EXPORT: return NIL;
186 case I_FIXDECL: return zthd3(unap(I_FIXDECL,c));
187 case I_INSTANCE: return NIL;
188 case I_TYPE: return zsel24(unap(I_TYPE,c));
189 case I_DATA: return zsel35(unap(I_DATA,c));
190 case I_NEWTYPE: return zsel35(unap(I_NEWTYPE,c));
191 case I_CLASS: return zsel35(unap(I_CLASS,c));
192 case I_VALUE: return zsnd3(unap(I_VALUE,c));
193 default: internal("getIEntityName");
198 /* Filter the contents of an interface, using the supplied predicate.
199 For flexibility, the predicate is passed as a second arg the value
200 extraArgs. This is a hack to get round the lack of partial applications
201 in C. Pred should not have any side effects. The dumpaction param
202 gives us the chance to print a message or some such for dumped items.
203 When a named entity is deleted, filterInterface also deletes the name
206 Cell filterInterface ( Cell root,
207 Bool (*pred)(Cell,Cell),
209 Void (*dumpAction)(Cell) )
212 Cell iface = unap(I_INTERFACE,root);
214 List deleted_ids = NIL; /* :: [ConVarId] */
216 for (tops = zsnd(iface); nonNull(tops); tops=tl(tops)) {
217 if (pred(hd(tops),extraArgs)) {
218 tops2 = cons( hd(tops), tops2 );
220 ConVarId deleted_id = getIEntityName ( hd(tops) );
221 if (nonNull(deleted_id))
222 deleted_ids = cons ( deleted_id, deleted_ids );
224 dumpAction ( hd(tops) );
227 tops2 = reverse(tops2);
229 /* Clean up the export list now. */
230 for (tops=tops2; nonNull(tops); tops=tl(tops)) {
231 if (whatIs(hd(tops))==I_EXPORT) {
232 Cell exdecl = unap(I_EXPORT,hd(tops));
233 List exlist = zsnd(exdecl);
235 for (; nonNull(exlist); exlist=tl(exlist)) {
236 Cell ex = hd(exlist);
237 ConVarId exid = isZPair(ex) ? zfst(ex) : ex;
238 assert (isCon(exid) || isVar(exid));
239 if (!varIsMember(textOf(exid),deleted_ids))
240 exlist2 = cons(ex, exlist2);
242 hd(tops) = ap(I_EXPORT,zpair(zfst(exdecl),exlist2));
246 return ap(I_INTERFACE, zpair(zfst(iface),tops2));
250 ZPair readInterface(String fname, Long fileSize)
254 ZPair iface = parseInterface(fname,fileSize);
255 assert (whatIs(iface)==I_INTERFACE);
257 for (tops = zsnd(unap(I_INTERFACE,iface)); nonNull(tops); tops=tl(tops))
258 if (whatIs(hd(tops)) == I_IMPORT) {
259 ZPair imp_decl = unap(I_IMPORT,hd(tops));
260 ConId m_to_imp = zfst(imp_decl);
261 if (textOf(m_to_imp) != findText("PrelGHC")) {
262 imports = cons(m_to_imp,imports);
263 /* fprintf(stderr, "add iface %s\n", textToStr(textOf(m_to_imp))); */
266 return zpair(iface,imports);
270 /* getExportDeclsInIFace :: I_INTERFACE -> [I_EXPORT] */
271 static List getExportDeclsInIFace ( Cell root )
273 Cell iface = unap(I_INTERFACE,root);
274 List decls = zsnd(iface);
277 for (ds=decls; nonNull(ds); ds=tl(ds))
278 if (whatIs(hd(ds))==I_EXPORT)
279 exports = cons(hd(ds), exports);
285 static Bool isExportedIFaceEntity ( Cell ife, List exlist_list )
287 /* ife :: I_IMPORT..I_VALUE */
288 /* exlist_list :: [[ ConVarId | ((ConId, [ConVarId])) ]] */
293 ConVarId ife_id = getIEntityName ( ife );
295 if (isNull(ife_id)) return TRUE;
297 tnm = textOf(ife_id);
299 /* for each export list ... */
300 for (; nonNull(exlist_list); exlist_list=tl(exlist_list)) {
301 exlist = hd(exlist_list);
303 /* for each entity in an export list ... */
304 for (t=exlist; nonNull(t); t=tl(t)) {
305 if (isZPair(hd(t))) {
306 /* A pair, which means an export entry
307 of the form ClassName(foo,bar). */
308 List subents = cons(zfst(hd(t)),zsnd(hd(t)));
309 for (; nonNull(subents); subents=tl(subents))
310 if (textOf(hd(subents)) == tnm) goto retain;
312 /* Single name in the list. */
313 if (textOf(hd(t)) == tnm) goto retain;
318 fprintf ( stderr, " dump %s\n", textToStr(tnm) );
322 fprintf ( stderr, " retain %s\n", textToStr(tnm) );
327 static Bool isExportedAbstractly ( ConId ife_id, List exlist_list )
329 /* ife_id :: ConId */
330 /* exlist_list :: [[ ConVarId | ((ConId, [ConVarId])) ]] */
335 assert (isCon(ife_id));
336 tnm = textOf(ife_id);
338 /* for each export list ... */
339 for (; nonNull(exlist_list); exlist_list=tl(exlist_list)) {
340 exlist = hd(exlist_list);
342 /* for each entity in an export list ... */
343 for (t=exlist; nonNull(t); t=tl(t)) {
344 if (isZPair(hd(t))) {
345 /* A pair, which means an export entry
346 of the form ClassName(foo,bar). */
347 if (textOf(zfst(hd(t))) == tnm) return FALSE;
349 if (textOf(hd(t)) == tnm) return TRUE;
353 internal("isExportedAbstractly");
354 return FALSE; /*notreached*/
358 /* Remove entities not mentioned in any of the export lists. */
359 static Cell deleteUnexportedIFaceEntities ( Cell root )
361 Cell iface = unap(I_INTERFACE,root);
362 ConId iname = zfst(iface);
363 List decls = zsnd(iface);
365 List exlist_list = NIL;
368 fprintf(stderr, "\ncleanIFace: %s\n", textToStr(textOf(iname)));
370 exlist_list = getExportDeclsInIFace ( root );
371 /* exlist_list :: [I_EXPORT] */
373 for (t=exlist_list; nonNull(t); t=tl(t))
374 hd(t) = zsnd(unap(I_EXPORT,hd(t)));
375 /* exlist_list :: [[ ConVarId | ((ConId, [ConVarId])) ]] */
377 if (isNull(exlist_list)) {
378 ERRMSG(0) "Can't find any export lists in interface file"
382 return filterInterface ( root, isExportedIFaceEntity,
387 /* addTyconsAndClassesFromIFace :: I_INTERFACE -> [QualId] -> [QualId] */
388 List addTyconsAndClassesFromIFace ( Cell root, List aktys )
390 Cell iface = unap(I_INTERFACE,root);
391 Text mname = textOf(zfst(iface));
392 List defns = zsnd(iface);
393 for (; nonNull(defns); defns = tl(defns)) {
394 Cell defn = hd(defns);
395 Cell what = whatIs(defn);
396 if (what==I_TYPE || what==I_DATA
397 || what==I_NEWTYPE || what==I_CLASS) {
398 QualId q = mkQCon ( mname, textOf(getIEntityName(defn)) );
399 if (!qualidIsMember ( q, aktys ))
400 aktys = cons ( q, aktys );
407 Void ifentityAllTypesKnown_dumpmsg ( Cell entity )
409 ConVarId id = getIEntityName ( entity );
411 "dumping %s because of unknown type(s)\n",
412 isNull(id) ? "(nameless entity?!)" : textToStr(textOf(id)) );
415 /* ifentityAllTypesKnown :: I_IMPORT..I_VALUE -> (([QualId], ConId)) -> Bool */
416 /* mod is the current module being processed -- so we can qualify unqual'd
417 names. Strange calling convention for aktys and mod is so we can call this
418 from filterInterface.
420 Bool ifentityAllTypesKnown ( Cell entity, ZPair aktys_mod )
423 List aktys = zfst ( aktys_mod );
424 ConId mod = zsnd ( aktys_mod );
425 switch (whatIs(entity)) {
432 Cell inst = unap(I_INSTANCE,entity);
433 List ctx = zsel25 ( inst ); /* :: [((QConId,VarId))] */
434 Type cls = zsel35 ( inst ); /* :: Type */
435 for (t = ctx; nonNull(t); t=tl(t))
436 if (!allTypesKnown(zfst(hd(t)),aktys,mod)) return FALSE;
437 if (!allTypesKnown(cls, aktys,mod)) return FALSE;
441 return allTypesKnown( zsel44(unap(I_TYPE,entity)), aktys,mod );
443 Cell data = unap(I_DATA,entity);
444 List ctx = zsel25 ( data ); /* :: [((QConId,VarId))] */
445 List constrs = zsel55 ( data ); /* :: [ ((ConId, [((Type,VarId,Int))] )) ] */
446 for (t = ctx; nonNull(t); t=tl(t))
447 if (!allTypesKnown(zfst(hd(t)),aktys,mod)) return FALSE;
448 for (t = constrs; nonNull(t); t=tl(t))
449 for (u = zsnd(hd(t)); nonNull(u); u=tl(u))
450 if (!allTypesKnown(zfst3(hd(u)),aktys,mod)) return FALSE;
454 Cell newty = unap(I_NEWTYPE,entity);
455 List ctx = zsel25(newty); /* :: [((QConId,VarId))] */
456 ZPair constr = zsel55 ( newty ); /* :: ((ConId,Type)) */
457 for (t = ctx; nonNull(t); t=tl(t))
458 if (!allTypesKnown(zfst(hd(t)),aktys,mod)) return FALSE;
460 && !allTypesKnown(zsnd(constr),aktys,mod)) return FALSE;
464 Cell klass = unap(I_CLASS,entity);
465 List ctx = zsel25(klass); /* :: [((QConId,VarId))] */
466 List sigs = zsel55(klass); /* :: [((VarId,Type))] */
467 for (t = ctx; nonNull(t); t=tl(t))
468 if (!allTypesKnown(zfst(hd(t)),aktys,mod)) return FALSE;
469 for (t = sigs; nonNull(t); t=tl(t))
470 if (!allTypesKnown(zsnd(hd(t)),aktys,mod)) return FALSE;
474 return allTypesKnown( zthd3(unap(I_VALUE,entity)), aktys,mod );
476 internal("ifentityAllTypesKnown");
481 /* ifTypeDoesntRefUnknownTycon :: I_IMPORT..I_VALUE -> (([QualId], ConId)) -> Bool */
482 /* mod is the current module being processed -- so we can qualify unqual'd
483 names. Strange calling convention for aktys and mod is so we can call this
484 from filterInterface.
486 Bool ifTypeDoesntRefUnknownTycon ( Cell entity, ZPair aktys_mod )
489 List aktys = zfst ( aktys_mod );
490 ConId mod = zsnd ( aktys_mod );
491 if (whatIs(entity) != I_TYPE) {
494 return allTypesKnown( zsel44(unap(I_TYPE,entity)), aktys,mod );
498 Void ifTypeDoesntRefUnknownTycon_dumpmsg ( Cell entity )
500 ConVarId id = getIEntityName ( entity );
501 assert (whatIs(entity)==I_TYPE);
504 "dumping type %s because of unknown tycon(s)\n",
505 textToStr(textOf(id)) );
509 /* abstractifyExport :: I_EXPORT -> ConId -> I_EXPORT
511 List abstractifyExDecl ( Cell root, ConId toabs )
513 ZPair exdecl = unap(I_EXPORT,root);
514 List exlist = zsnd(exdecl);
516 for (; nonNull(exlist); exlist = tl(exlist)) {
517 if (isZPair(hd(exlist))
518 && textOf(toabs) == textOf(zfst(hd(exlist)))) {
519 /* it's toabs, exported non-abstractly */
520 res = cons ( zfst(hd(exlist)), res );
522 res = cons ( hd(exlist), res );
525 return ap(I_EXPORT,zpair(zfst(exdecl),reverse(res)));
529 Void ppModule ( Text modt )
531 fflush(stderr); fflush(stdout);
532 fprintf(stderr, "---------------- MODULE %s ----------------\n",
537 /* ifaces_outstanding holds a list of parsed interfaces
538 for which we need to load objects and create symbol
541 Return TRUE if Prelude `elem` ifaces_outstanding, else FALSE.
543 Bool processInterfaces ( void )
554 List all_known_types;
558 List ifaces = NIL; /* :: List I_INTERFACE */
559 List iface_sizes = NIL; /* :: List Int */
560 List iface_onames = NIL; /* :: List Text */
562 if (isNull(ifaces_outstanding)) return FALSE;
565 "processInterfaces: %d interfaces to process\n",
566 length(ifaces_outstanding) );
568 /* unzip3 ifaces_outstanding into ifaces, iface_sizes, iface_onames */
569 for (xs = ifaces_outstanding; nonNull(xs); xs=tl(xs)) {
570 ifaces = cons ( zfst3(hd(xs)), ifaces );
571 iface_onames = cons ( zsnd3(hd(xs)), iface_onames );
572 iface_sizes = cons ( zthd3(hd(xs)), iface_sizes );
575 ifaces = reverse(ifaces);
576 iface_onames = reverse(iface_onames);
577 iface_sizes = reverse(iface_sizes);
579 /* Clean up interfaces -- dump non-exported value, class, type decls */
580 for (xs = ifaces; nonNull(xs); xs = tl(xs))
581 hd(xs) = deleteUnexportedIFaceEntities(hd(xs));
584 /* Iteratively delete any type declarations which refer to unknown
587 num_known_types = 999999999;
591 /* Construct a list of all known tycons. This is a list of QualIds.
592 Unfortunately it also has to contain all known class names, since
593 allTypesKnown cannot distinguish between tycons and classes -- a
594 deficiency of the iface abs syntax.
596 all_known_types = getAllKnownTyconsAndClasses();
597 for (xs = ifaces; nonNull(xs); xs=tl(xs))
598 all_known_types = addTyconsAndClassesFromIFace ( hd(xs), all_known_types );
600 /* Have we reached a fixed point? */
601 i = length(all_known_types);
602 printf ( "\n============= %d known types =============\n", i );
603 if (num_known_types == i) break;
606 /* Delete all entities which refer to unknown tycons. */
607 for (xs = ifaces; nonNull(xs); xs = tl(xs)) {
608 ConId mod = zfst(unap(I_INTERFACE,hd(xs)));
609 assert(nonNull(mod));
610 hd(xs) = filterInterface ( hd(xs),
611 ifTypeDoesntRefUnknownTycon,
612 zpair(all_known_types,mod),
613 ifTypeDoesntRefUnknownTycon_dumpmsg );
617 /* Now abstractify any datas and newtypes which refer to unknown tycons
618 -- including, of course, the type decls just deleted.
620 for (xs = ifaces; nonNull(xs); xs = tl(xs)) {
621 List absify = NIL; /* :: [ConId] */
622 ZPair iface = unap(I_INTERFACE,hd(xs)); /* ((ConId, [I_IMPORT..I_VALUE])) */
623 ConId mod = zfst(iface);
624 List aktys = all_known_types; /* just a renaming */
628 /* Compute into absify the list of all ConIds (tycons) we need to
631 for (es = zsnd(iface); nonNull(es); es=tl(es)) {
633 Bool allKnown = TRUE;
635 if (whatIs(ent)==I_DATA) {
636 Cell data = unap(I_DATA,ent);
637 List ctx = zsel25 ( data ); /* :: [((QConId,VarId))] */
638 List constrs = zsel55 ( data ); /* :: [ ((ConId, [((Type,VarId,Int))] )) ] */
639 for (t = ctx; nonNull(t); t=tl(t))
640 if (!allTypesKnown(zfst(hd(t)),aktys,mod)) allKnown = FALSE;
641 for (t = constrs; nonNull(t); t=tl(t))
642 for (u = zsnd(hd(t)); nonNull(u); u=tl(u))
643 if (!allTypesKnown(zfst3(hd(u)),aktys,mod)) allKnown = FALSE;
645 else if (whatIs(ent)==I_NEWTYPE) {
646 Cell newty = unap(I_NEWTYPE,ent);
647 List ctx = zsel25(newty); /* :: [((QConId,VarId))] */
648 ZPair constr = zsel55 ( newty ); /* :: ((ConId,Type)) */
649 for (t = ctx; nonNull(t); t=tl(t))
650 if (!allTypesKnown(zfst(hd(t)),aktys,mod)) allKnown = FALSE;
651 if (!allTypesKnown(zsnd(constr),aktys,mod)) allKnown = FALSE;
655 absify = cons ( getIEntityName(ent), absify );
657 "abstractifying %s because it uses an unknown type\n",
658 textToStr(textOf(getIEntityName(ent))) );
662 /* mark in exports as abstract all names in absify (modifies iface) */
663 for (; nonNull(absify); absify=tl(absify)) {
664 ConId toAbs = hd(absify);
665 for (es = zsnd(iface); nonNull(es); es=tl(es)) {
666 if (whatIs(hd(es)) != I_EXPORT) continue;
667 hd(es) = abstractifyExDecl ( hd(es), toAbs );
671 /* For each data/newtype in the export list marked as abstract,
672 remove the constructor lists. This catches all abstractification
673 caused by the code above, and it also catches tycons which really
674 were exported abstractly.
677 exlist_list = getExportDeclsInIFace ( ap(I_INTERFACE,iface) );
678 /* exlist_list :: [I_EXPORT] */
679 for (t=exlist_list; nonNull(t); t=tl(t))
680 hd(t) = zsnd(unap(I_EXPORT,hd(t)));
681 /* exlist_list :: [[ ConVarId | ((ConId, [ConVarId])) ]] */
683 for (es = zsnd(iface); nonNull(es); es=tl(es)) {
685 if (whatIs(ent)==I_DATA
686 && isExportedAbstractly ( getIEntityName(ent),
688 Cell data = unap(I_DATA,ent);
689 data = z5ble ( zsel15(data), zsel25(data), zsel35(data),
690 zsel45(data), NIL /* the constr list */ );
691 hd(es) = ap(I_DATA,data);
692 fprintf(stderr, "abstractify data %s\n", textToStr(textOf(getIEntityName(ent))) );
694 else if (whatIs(ent)==I_NEWTYPE
695 && isExportedAbstractly ( getIEntityName(ent),
697 Cell data = unap(I_NEWTYPE,ent);
698 data = z5ble ( zsel15(data), zsel25(data), zsel35(data),
699 zsel45(data), NIL /* the constr-type pair */ );
700 hd(es) = ap(I_NEWTYPE,data);
701 fprintf(stderr, "abstractify newtype %s\n", textToStr(textOf(getIEntityName(ent))) );
705 /* We've finally finished mashing this iface. Update the iface list. */
706 hd(xs) = ap(I_INTERFACE,iface);
710 /* At this point, the interfaces are cleaned up so that no type, data or
711 newtype defn refers to a non-existant type. However, there still may
712 be value defns, classes and instances which refer to unknown types.
713 Delete iteratively until a fixed point is reached.
717 num_known_types = 999999999;
721 /* Construct a list of all known tycons. This is a list of QualIds.
722 Unfortunately it also has to contain all known class names, since
723 allTypesKnown cannot distinguish between tycons and classes -- a
724 deficiency of the iface abs syntax.
726 all_known_types = getAllKnownTyconsAndClasses();
727 for (xs = ifaces; nonNull(xs); xs=tl(xs))
728 all_known_types = addTyconsAndClassesFromIFace ( hd(xs), all_known_types );
730 /* Have we reached a fixed point? */
731 i = length(all_known_types);
732 printf ( "\n------------- %d known types -------------\n", i );
733 if (num_known_types == i) break;
736 /* Delete all entities which refer to unknown tycons. */
737 for (xs = ifaces; nonNull(xs); xs = tl(xs)) {
738 ConId mod = zfst(unap(I_INTERFACE,hd(xs)));
739 assert(nonNull(mod));
741 hd(xs) = filterInterface ( hd(xs),
742 ifentityAllTypesKnown,
743 zpair(all_known_types,mod),
744 ifentityAllTypesKnown_dumpmsg );
749 /* Allocate module table entries and read in object code. */
752 xs=tl(xs), iface_sizes=tl(iface_sizes), iface_onames=tl(iface_onames)) {
753 startGHCModule ( textOf(zfst(unap(I_INTERFACE,hd(xs)))),
754 intOf(hd(iface_sizes)),
757 assert (isNull(iface_sizes));
758 assert (isNull(iface_onames));
761 /* Now work through the decl lists of the modules, and call the
762 startGHC* functions on the entities. This creates names in
763 various tables but doesn't bind them to anything.
766 for (xs = ifaces; nonNull(xs); xs = tl(xs)) {
767 iface = unap(I_INTERFACE,hd(xs));
768 mname = textOf(zfst(iface));
769 mod = findModule(mname);
770 if (isNull(mod)) internal("processInterfaces(4)");
772 ppModule ( module(mod).text );
774 for (decls = zsnd(iface); nonNull(decls); decls = tl(decls)) {
775 Cell decl = hd(decls);
776 switch(whatIs(decl)) {
778 Cell exdecl = unap(I_EXPORT,decl);
779 startGHCExports ( zfst(exdecl), zsnd(exdecl) );
783 Cell imdecl = unap(I_IMPORT,decl);
784 startGHCImports ( zfst(imdecl), zsnd(imdecl) );
791 /* Trying to find the instance table location allocated by
792 startGHCInstance in subsequent processing is a nightmare, so
793 cache it on the tree.
795 Cell instance = unap(I_INSTANCE,decl);
796 Inst in = startGHCInstance ( zsel15(instance), zsel25(instance),
797 zsel35(instance), zsel45(instance) );
798 hd(decls) = ap(I_INSTANCE,
799 z5ble( zsel15(instance), zsel25(instance),
800 zsel35(instance), zsel45(instance), in ));
804 Cell tydecl = unap(I_TYPE,decl);
805 startGHCSynonym ( zsel14(tydecl), zsel24(tydecl),
806 zsel34(tydecl), zsel44(tydecl) );
810 Cell ddecl = unap(I_DATA,decl);
811 startGHCDataDecl ( zsel15(ddecl), zsel25(ddecl),
812 zsel35(ddecl), zsel45(ddecl), zsel55(ddecl) );
816 Cell ntdecl = unap(I_NEWTYPE,decl);
817 startGHCNewType ( zsel15(ntdecl), zsel25(ntdecl),
818 zsel35(ntdecl), zsel45(ntdecl),
823 Cell klass = unap(I_CLASS,decl);
824 startGHCClass ( zsel15(klass), zsel25(klass),
825 zsel35(klass), zsel45(klass),
830 Cell value = unap(I_VALUE,decl);
831 startGHCValue ( zfst3(value), zsnd3(value), zthd3(value) );
835 internal("processInterfaces(1)");
840 fprintf(stderr, "\n=========================================================\n");
841 fprintf(stderr, "=========================================================\n");
843 /* Traverse again the decl lists of the modules, this time
844 calling the finishGHC* functions. But don't process
845 the export lists; those must wait for later.
848 for (xs = ifaces; nonNull(xs); xs = tl(xs)) {
849 iface = unap(I_INTERFACE,hd(xs));
850 mname = textOf(zfst(iface));
851 mod = findModule(mname);
852 if (isNull(mod)) internal("processInterfaces(3)");
854 ppModule ( module(mod).text );
856 if (mname == textPrelude) didPrelude = TRUE;
858 for (decls = zsnd(iface); nonNull(decls); decls = tl(decls)) {
859 Cell decl = hd(decls);
860 switch(whatIs(decl)) {
871 Cell instance = unap(I_INSTANCE,decl);
872 finishGHCInstance ( zsel55(instance) );
876 Cell tydecl = unap(I_TYPE,decl);
877 finishGHCSynonym ( zsel24(tydecl) );
881 Cell ddecl = unap(I_DATA,decl);
882 finishGHCDataDecl ( zsel35(ddecl) );
886 Cell ntdecl = unap(I_NEWTYPE,decl);
887 finishGHCNewType ( zsel35(ntdecl) );
891 Cell klass = unap(I_CLASS,decl);
892 finishGHCClass ( zsel35(klass) );
896 Cell value = unap(I_VALUE,decl);
897 finishGHCValue ( zsnd3(value) );
901 internal("processInterfaces(2)");
905 fprintf(stderr, "\n+++++++++++++++++++++++++++++++++++++++++++++++++++++++++\n");
906 fprintf(stderr, "+++++++++++++++++++++++++++++++++++++++++++++++++++++++++\n");
908 /* Build the module(m).export lists for each module, by running
909 through the export lists in the iface. Also, do the implicit
910 'import Prelude' thing. And finally, do the object code
913 for (xs = ifaces; nonNull(xs); xs = tl(xs))
914 finishGHCModule(hd(xs));
917 ifaces_outstanding = NIL;
923 /* --------------------------------------------------------------------------
925 * ------------------------------------------------------------------------*/
927 void startGHCModule_errMsg ( char* msg )
929 fprintf ( stderr, "object error: %s\n", msg );
932 void* startGHCModule_clientLookup ( char* sym )
934 /* fprintf ( stderr, "CLIENTLOOKUP %s\n", sym ); */
935 return lookupObjName ( sym );
938 ObjectCode* startGHCModule_partial_load ( String objNm, Int objSz )
941 = ocNew ( startGHCModule_errMsg,
942 startGHCModule_clientLookup,
946 ERRMSG(0) "Storage allocation for object file \"%s\" failed", objNm
949 if (!ocLoadImage(oc,VERBOSE)) {
950 ERRMSG(0) "Reading of object file \"%s\" failed", objNm
953 if (!ocVerifyImage(oc,VERBOSE)) {
954 ERRMSG(0) "Validation of object file \"%s\" failed", objNm
957 if (!ocGetNames(oc,0||VERBOSE)) {
958 ERRMSG(0) "Reading of symbol names in object file \"%s\" failed", objNm
964 Void startGHCModule ( Text mname, Int sizeObj, Text nameObj )
967 Module m = findModule(mname);
970 m = newModule(mname);
971 fprintf ( stderr, "startGHCIface: name %16s objsize %d\n",
972 textToStr(mname), sizeObj );
974 if (module(m).fake) {
975 module(m).fake = FALSE;
977 ERRMSG(0) "Module \"%s\" already loaded", textToStr(mname)
982 /* Get hold of the primary object for the module. */
984 = startGHCModule_partial_load ( textToStr(nameObj), sizeObj );
986 /* and any extras ... */
987 for (xts = module(m).objectExtraNames; nonNull(xts); xts=tl(xts)) {
991 String nm = getExtraObjectInfo ( textToStr(nameObj),
995 ERRMSG(0) "Can't find extra object file \"%s\"", nm
998 oc = startGHCModule_partial_load ( nm, size );
999 oc->next = module(m).objectExtras;
1000 module(m).objectExtras = oc;
1005 /* For the module mod, augment both the export environment (.exports)
1006 and the eval environment (.names, .tycons, .classes)
1007 with the symbols mentioned in exlist. We don't actually need
1008 to modify the names, tycons, classes or instances in the eval
1009 environment, since previous processing of the
1010 top-level decls in the iface should have done this already.
1012 mn is the module mentioned in the export list; it is the "original"
1013 module for the symbols in the export list. We should also record
1014 this info with the symbols, since references to object code need to
1015 refer to the original module in which a symbol was defined, rather
1016 than to some module it has been imported into and then re-exported.
1018 We take the policy that if something mentioned in an export list
1019 can't be found in the symbol tables, it is simply ignored. After all,
1020 previous processing of the iface syntax trees has already removed
1021 everything which Hugs can't handle, so if there is mention of these
1022 things still lurking in export lists somewhere, about the only thing
1023 to do is to ignore it.
1025 Also do an implicit 'import Prelude' thingy for the module,
1030 Void finishGHCModule ( Cell root )
1032 /* root :: I_INTERFACE */
1033 Cell iface = unap(I_INTERFACE,root);
1034 ConId iname = zfst(iface);
1035 Module mod = findModule(textOf(iname));
1036 List exlist_list = NIL;
1040 fprintf(stderr, "begin finishGHCModule %s\n", textToStr(textOf(iname)));
1042 if (isNull(mod)) internal("finishExports(1)");
1045 exlist_list = getExportDeclsInIFace ( root );
1046 /* exlist_list :: [I_EXPORT] */
1048 for (; nonNull(exlist_list); exlist_list=tl(exlist_list)) {
1049 ZPair exdecl = unap(I_EXPORT,hd(exlist_list));
1050 ConId exmod = zfst(exdecl);
1051 List exlist = zsnd(exdecl);
1052 /* exlist :: [ ConVarId | ((ConId, [ConVarId])) ] */
1054 for (; nonNull(exlist); exlist=tl(exlist)) {
1059 Cell ex = hd(exlist);
1061 switch (whatIs(ex)) {
1063 case VARIDCELL: /* variable */
1064 q = mkQualId(exmod,ex);
1065 c = findQualNameWithoutConsultingExportList ( q );
1066 if (isNull(c)) goto notfound;
1067 fprintf(stderr, " var %s\n", textToStr(textOf(ex)) );
1068 module(mod).exports = cons(c, module(mod).exports);
1072 case CONIDCELL: /* non data tycon */
1073 q = mkQualId(exmod,ex);
1074 c = findQualTyconWithoutConsultingExportList ( q );
1075 if (isNull(c)) goto notfound;
1076 fprintf(stderr, " type %s\n", textToStr(textOf(ex)) );
1077 module(mod).exports = cons(pair(c,NIL), module(mod).exports);
1081 case ZTUP2: /* data T = C1 ... Cn or class C where f1 ... fn */
1082 subents = zsnd(ex); /* :: [ConVarId] */
1083 ex = zfst(ex); /* :: ConId */
1084 q = mkQualId(exmod,ex);
1085 c = findQualTyconWithoutConsultingExportList ( q );
1087 if (nonNull(c)) { /* data */
1088 fprintf(stderr, " data/newtype %s = { ", textToStr(textOf(ex)) );
1089 assert(tycon(c).what == DATATYPE || tycon(c).what==NEWTYPE);
1090 abstract = isNull(tycon(c).defn);
1091 /* This data/newtype could be abstract even tho the export list
1092 says to export it non-abstractly. That happens if it was
1093 imported from some other module and is now being re-exported,
1094 and previous cleanup phases have abstractified it in the
1095 original (defining) module.
1098 module(mod).exports = cons(pair(c,NIL), module(mod).exports);
1100 fprintf ( stderr, "(abstract) ");
1102 module(mod).exports = cons(pair(c,DOTDOT), module(mod).exports);
1104 for (; nonNull(subents); subents = tl(subents)) {
1105 Cell ent2 = hd(subents);
1106 assert(isCon(ent2) || isVar(ent2));
1107 /* isVar since could be a field name */
1108 q = mkQualId(exmod,ent2);
1109 c = findQualNameWithoutConsultingExportList ( q );
1110 fprintf(stderr, "%s ", textToStr(name(c).text));
1112 /* module(mod).exports = cons(c, module(mod).exports); */
1116 fprintf(stderr, "}\n" );
1117 } else { /* class */
1118 q = mkQualId(exmod,ex);
1119 c = findQualClassWithoutConsultingExportList ( q );
1120 if (isNull(c)) goto notfound;
1121 fprintf(stderr, " class %s { ", textToStr(textOf(ex)) );
1122 module(mod).exports = cons(pair(c,DOTDOT), module(mod).exports);
1124 for (; nonNull(subents); subents = tl(subents)) {
1125 Cell ent2 = hd(subents);
1126 assert(isVar(ent2));
1127 q = mkQualId(exmod,ent2);
1128 c = findQualNameWithoutConsultingExportList ( q );
1129 fprintf(stderr, "%s ", textToStr(name(c).text));
1130 if (isNull(c)) goto notfound;
1131 /* module(mod).exports = cons(c, module(mod).exports); */
1134 fprintf(stderr, "}\n" );
1139 internal("finishExports(2)");
1142 continue; /* so notfound: can be placed after this */
1145 /* q holds what ain't found */
1146 assert(whatIs(q)==QUALIDENT);
1147 fprintf( stderr, " ------ IGNORED: %s.%s\n",
1148 textToStr(qmodOf(q)), textToStr(qtextOf(q)) );
1154 if (preludeLoaded) {
1155 /* do the implicit 'import Prelude' thing */
1156 List pxs = module(modulePrelude).exports;
1157 for (; nonNull(pxs); pxs=tl(pxs)) {
1160 switch (whatIs(px)) {
1165 module(mod).names = cons ( px, module(mod).names );
1168 module(mod).tycons = cons ( px, module(mod).tycons );
1171 module(mod).classes = cons ( px, module(mod).classes );
1174 fprintf(stderr, "finishGHCModule: unknown tag %d\n", whatIs(px));
1175 internal("finishGHCModule -- implicit import Prelude");
1182 /* Last, but by no means least ... */
1183 if (!ocResolve(module(mod).object,0||VERBOSE))
1184 internal("finishGHCModule: object resolution failed");
1186 for (oc=module(mod).objectExtras; oc; oc=oc->next) {
1187 if (!ocResolve(oc, 0||VERBOSE))
1188 internal("finishGHCModule: extra object resolution failed");
1193 /* --------------------------------------------------------------------------
1195 * ------------------------------------------------------------------------*/
1197 Void startGHCExports ( ConId mn, List exlist )
1200 printf("startGHCExports %s\n", textToStr(textOf(mn)) );
1202 /* Nothing to do. */
1205 Void finishGHCExports ( ConId mn, List exlist )
1208 printf("finishGHCExports %s\n", textToStr(textOf(mn)) );
1210 /* Nothing to do. */
1214 /* --------------------------------------------------------------------------
1216 * ------------------------------------------------------------------------*/
1218 Void startGHCImports ( ConId mn, List syms )
1219 /* nm the module to import from */
1220 /* syms [ConId | VarId] -- the names to import */
1223 printf("startGHCImports %s\n", textToStr(textOf(mn)) );
1225 /* Nothing to do. */
1229 Void finishGHCImports ( ConId nm, List syms )
1230 /* nm the module to import from */
1231 /* syms [ConId | VarId] -- the names to import */
1234 printf("finishGHCImports %s\n", textToStr(textOf(nm)) );
1236 /* Nothing to do. */
1240 /* --------------------------------------------------------------------------
1242 * ------------------------------------------------------------------------*/
1244 /* convert a leading run of DICTAPs into Hugs' internal Qualtype form, viz:
1245 { C1 a } -> { C2 b } -> T into
1246 ap(QUALTYPE, ( [(C1,a),(C2,b)], T ))
1248 static Type dictapsToQualtype ( Type ty )
1251 List preds, dictaps;
1253 /* break ty into pieces at the top-level arrows */
1254 while (isAp(ty) && isAp(fun(ty)) && fun(fun(ty))==typeArrow) {
1255 pieces = cons ( arg(fun(ty)), pieces );
1258 pieces = cons ( ty, pieces );
1259 pieces = reverse ( pieces );
1262 while (nonNull(pieces) && whatIs(hd(pieces))==DICTAP) {
1263 dictaps = cons ( hd(pieces), dictaps );
1264 pieces = tl(pieces);
1267 /* dictaps holds the predicates, backwards */
1268 /* pieces holds the remainder of the type, forwards */
1269 assert(nonNull(pieces));
1270 pieces = reverse(pieces);
1272 pieces = tl(pieces);
1273 for (; nonNull(pieces); pieces=tl(pieces))
1274 ty = fn(hd(pieces),ty);
1277 for (; nonNull(dictaps); dictaps=tl(dictaps)) {
1278 Cell da = hd(dictaps);
1279 QualId cl = fst(unap(DICTAP,da));
1280 Cell arg = snd(unap(DICTAP,da));
1281 preds = cons ( pair(cl,arg), preds );
1284 if (nonNull(preds)) ty = ap(QUAL, pair(preds,ty));
1290 void startGHCValue ( Int line, VarId vid, Type ty )
1294 Text v = textOf(vid);
1297 printf("begin startGHCValue %s\n", textToStr(v));
1302 ERRMSG(0) "Attempt to redefine variable \"%s\"", textToStr(v)
1307 ty = dictapsToQualtype(ty);
1309 tvs = ifTyvarsIn(ty);
1310 for (tmp=tvs; nonNull(tmp); tmp=tl(tmp))
1311 hd(tmp) = zpair(hd(tmp),STAR);
1313 ty = mkPolyType(tvsToKind(tvs),ty);
1315 ty = tvsToOffsets(line,ty,tvs);
1317 name(n).arity = arityInclDictParams(ty);
1318 name(n).line = line;
1322 void finishGHCValue ( VarId vid )
1324 Name n = findName ( textOf(vid) );
1325 Int line = name(n).line;
1327 fprintf(stderr, "begin finishGHCValue %s\n", textToStr(name(n).text) );
1329 assert(currentModule == name(n).mod);
1330 name(n).type = conidcellsToTycons(line,name(n).type);
1334 /* --------------------------------------------------------------------------
1336 * ------------------------------------------------------------------------*/
1338 Void startGHCSynonym ( Int line, ConId tycon, List tvs, Type ty )
1340 /* tycon :: ConId */
1341 /* tvs :: [((VarId,Kind))] */
1343 Text t = textOf(tycon);
1345 fprintf(stderr, "begin startGHCSynonym %s\n", textToStr(t) );
1347 if (nonNull(findTycon(t))) {
1348 ERRMSG(line) "Repeated definition of type constructor \"%s\"",
1352 Tycon tc = newTycon(t);
1353 tycon(tc).line = line;
1354 tycon(tc).arity = length(tvs);
1355 tycon(tc).what = SYNONYM;
1356 tycon(tc).kind = tvsToKind(tvs);
1358 /* prepare for finishGHCSynonym */
1359 tycon(tc).defn = tvsToOffsets(line,ty,tvs);
1364 static Void finishGHCSynonym ( ConId tyc )
1366 Tycon tc = findTycon(textOf(tyc));
1367 Int line = tycon(tc).line;
1369 fprintf(stderr, "begin finishGHCSynonym %s\n", textToStr(textOf(tyc)) );
1372 assert (currentModule == tycon(tc).mod);
1373 // setCurrModule(tycon(tc).mod);
1374 tycon(tc).defn = conidcellsToTycons(line,tycon(tc).defn);
1376 /* (ADR) ToDo: can't really do this until I've done all synonyms
1377 * and then I have to do them in order
1378 * tycon(tc).defn = fullExpand(ty);
1379 * (JRS) What?!?! i don't understand
1384 /* --------------------------------------------------------------------------
1386 * ------------------------------------------------------------------------*/
1388 Void startGHCDataDecl(line,ctx0,tycon,ktyvars,constrs0)
1390 List ctx0; /* [((QConId,VarId))] */
1391 Cell tycon; /* ConId */
1392 List ktyvars; /* [((VarId,Kind))] */
1393 List constrs0; /* [((ConId,[((Type,VarId,Int))]))] */
1394 /* The Text is an optional field name
1395 The Int indicates strictness */
1396 /* ToDo: worry about being given a decl for (->) ?
1397 * and worry about qualidents for ()
1400 Type ty, resTy, selTy, conArgTy;
1401 List tmp, conArgs, sels, constrs, fields, tyvarsMentioned;
1405 Pair conArg, ctxElem;
1407 Int conArgStrictness;
1409 Text t = textOf(tycon);
1411 fprintf(stderr, "begin startGHCDataDecl %s\n",textToStr(t));
1414 if (nonNull(findTycon(t))) {
1415 ERRMSG(line) "Repeated definition of type constructor \"%s\"",
1419 Tycon tc = newTycon(t);
1421 tycon(tc).line = line;
1422 tycon(tc).arity = length(ktyvars);
1423 tycon(tc).kind = tvsToKind(ktyvars);
1424 tycon(tc).what = DATATYPE;
1426 /* a list to accumulate selectors in :: [((VarId,Type))] */
1429 /* make resTy the result type of the constr, T v1 ... vn */
1431 for (tmp=ktyvars; nonNull(tmp); tmp=tl(tmp))
1432 resTy = ap(resTy,zfst(hd(tmp)));
1434 /* for each constructor ... */
1435 for (constrs=constrs0; nonNull(constrs); constrs=tl(constrs)) {
1436 constr = hd(constrs);
1437 conid = zfst(constr);
1438 fields = zsnd(constr);
1440 /* Build type of constr and handle any selectors found.
1441 Also collect up tyvars occurring in the constr's arg
1442 types, so we can throw away irrelevant parts of the
1446 tyvarsMentioned = NIL;
1447 /* tyvarsMentioned :: [VarId] */
1449 conArgs = reverse(fields);
1450 for (; nonNull(conArgs); conArgs=tl(conArgs)) {
1451 conArg = hd(conArgs); /* (Type,Text) */
1452 conArgTy = zfst3(conArg);
1453 conArgNm = zsnd3(conArg);
1454 conArgStrictness = intOf(zthd3(conArg));
1455 tyvarsMentioned = dupListOnto(ifTyvarsIn(conArgTy),
1457 if (conArgStrictness > 0) conArgTy = bang(conArgTy);
1458 ty = fn(conArgTy,ty);
1459 if (nonNull(conArgNm)) {
1460 /* a field name is mentioned too */
1461 selTy = fn(resTy,conArgTy);
1462 if (whatIs(tycon(tc).kind) != STAR)
1463 selTy = pair(POLYTYPE,pair(tycon(tc).kind, selTy));
1464 selTy = tvsToOffsets(line,selTy, ktyvars);
1465 sels = cons( zpair(conArgNm,selTy), sels);
1469 /* Now ty is the constructor's type, not including context.
1470 Throw away any parts of the context not mentioned in
1471 tyvarsMentioned, and use it to qualify ty.
1474 for (ctx=ctx0; nonNull(ctx); ctx=tl(ctx)) {
1476 /* ctxElem :: ((QConId,VarId)) */
1477 if (nonNull(cellIsMember(textOf(zsnd(ctxElem)),tyvarsMentioned)))
1478 ctx2 = cons(ctxElem, ctx2);
1481 ty = ap(QUAL,pair(ctx2,ty));
1483 /* stick the tycon's kind on, if not simply STAR */
1484 if (whatIs(tycon(tc).kind) != STAR)
1485 ty = pair(POLYTYPE,pair(tycon(tc).kind, ty));
1487 ty = tvsToOffsets(line,ty, ktyvars);
1489 /* Finally, stick the constructor's type onto it. */
1490 hd(constrs) = ztriple(conid,fields,ty);
1493 /* Final result is that
1494 constrs :: [((ConId,[((Type,Text))],Type))]
1495 lists the constructors and their types
1496 sels :: [((VarId,Type))]
1497 lists the selectors and their types
1499 tycon(tc).defn = startGHCConstrs(line,constrs0,sels);
1504 static List startGHCConstrs ( Int line, List cons, List sels )
1506 /* cons :: [((ConId,[((Type,Text,Int))],Type))] */
1507 /* sels :: [((VarId,Type))] */
1508 /* returns [Name] */
1510 Int conNo = length(cons)>1 ? 1 : 0;
1511 for(cs=cons; nonNull(cs); cs=tl(cs), conNo++) {
1512 Name c = startGHCConstr(line,conNo,hd(cs));
1515 /* cons :: [Name] */
1517 for(ss=sels; nonNull(ss); ss=tl(ss)) {
1518 hd(ss) = startGHCSel(line,hd(ss));
1520 /* sels :: [Name] */
1521 return appendOnto(cons,sels);
1525 static Name startGHCSel ( Int line, ZPair sel )
1527 /* sel :: ((VarId, Type)) */
1528 Text t = textOf(zfst(sel));
1529 Type type = zsnd(sel);
1531 Name n = findName(t);
1533 ERRMSG(line) "Repeated definition for selector \"%s\"",
1539 name(n).line = line;
1540 name(n).number = SELNAME;
1543 name(n).type = type;
1548 static Name startGHCConstr ( Int line, Int conNo, ZTriple constr )
1550 /* constr :: ((ConId,[((Type,Text,Int))],Type)) */
1551 /* (ADR) ToDo: add rank2 annotation and existential annotation
1552 * these affect how constr can be used.
1554 Text con = textOf(zfst3(constr));
1555 Type type = zthd3(constr);
1556 Int arity = arityFromType(type);
1557 Name n = findName(con); /* Allocate constructor fun name */
1559 n = newName(con,NIL);
1560 } else if (name(n).defn!=PREDEFINED) {
1561 ERRMSG(line) "Repeated definition for constructor \"%s\"",
1565 name(n).arity = arity; /* Save constructor fun details */
1566 name(n).line = line;
1567 name(n).number = cfunNo(conNo);
1568 name(n).type = type;
1573 static Void finishGHCDataDecl ( ConId tyc )
1576 Tycon tc = findTycon(textOf(tyc));
1578 printf ( "begin finishGHCDataDecl %s\n", textToStr(textOf(tyc)) );
1580 if (isNull(tc)) internal("finishGHCDataDecl");
1582 for (nms=tycon(tc).defn; nonNull(nms); nms=tl(nms)) {
1584 Int line = name(n).line;
1585 assert(currentModule == name(n).mod);
1586 name(n).type = conidcellsToTycons(line,name(n).type);
1591 /* --------------------------------------------------------------------------
1593 * ------------------------------------------------------------------------*/
1595 Void startGHCNewType ( Int line, List ctx0,
1596 ConId tycon, List tvs, Cell constr )
1598 /* ctx0 :: [((QConId,VarId))] */
1599 /* tycon :: ConId */
1600 /* tvs :: [((VarId,Kind))] */
1601 /* constr :: ((ConId,Type)) or NIL if abstract */
1604 Text t = textOf(tycon);
1606 fprintf(stderr, "begin startGHCNewType %s\n", textToStr(t) );
1608 if (nonNull(findTycon(t))) {
1609 ERRMSG(line) "Repeated definition of type constructor \"%s\"",
1613 Tycon tc = newTycon(t);
1614 tycon(tc).line = line;
1615 tycon(tc).arity = length(tvs);
1616 tycon(tc).what = NEWTYPE;
1617 tycon(tc).kind = tvsToKind(tvs);
1618 /* can't really do this until I've read in all synonyms */
1620 if (isNull(constr)) {
1621 tycon(tc).defn = NIL;
1623 /* constr :: ((ConId,Type)) */
1624 Text con = textOf(zfst(constr));
1625 Type type = zsnd(constr);
1626 Name n = findName(con); /* Allocate constructor fun name */
1628 n = newName(con,NIL);
1629 } else if (name(n).defn!=PREDEFINED) {
1630 ERRMSG(line) "Repeated definition for constructor \"%s\"",
1634 name(n).arity = 1; /* Save constructor fun details */
1635 name(n).line = line;
1636 name(n).number = cfunNo(0);
1637 name(n).defn = nameId;
1638 tycon(tc).defn = singleton(n);
1640 /* make resTy the result type of the constr, T v1 ... vn */
1642 for (tmp=tvs; nonNull(tmp); tmp=tl(tmp))
1643 resTy = ap(resTy,zfst(hd(tmp)));
1644 type = fn(type,resTy);
1646 type = ap(QUAL,pair(ctx0,type));
1647 type = tvsToOffsets(line,type,tvs);
1648 name(n).type = type;
1654 static Void finishGHCNewType ( ConId tyc )
1656 Tycon tc = findTycon(textOf(tyc));
1658 printf ( "begin finishGHCNewType %s\n", textToStr(textOf(tyc)) );
1661 if (isNull(tc)) internal("finishGHCNewType");
1663 if (isNull(tycon(tc).defn)) {
1664 /* it's an abstract type */
1666 else if (length(tycon(tc).defn) == 1) {
1667 /* As we expect, has a single constructor */
1668 Name n = hd(tycon(tc).defn);
1669 Int line = name(n).line;
1670 assert(currentModule == name(n).mod);
1671 name(n).type = conidcellsToTycons(line,name(n).type);
1673 internal("finishGHCNewType(2)");
1678 /* --------------------------------------------------------------------------
1679 * Class declarations
1680 * ------------------------------------------------------------------------*/
1682 Void startGHCClass(line,ctxt,tc_name,kinded_tvs,mems0)
1684 List ctxt; /* [((QConId, VarId))] */
1685 ConId tc_name; /* ConId */
1686 List kinded_tvs; /* [((VarId, Kind))] */
1687 List mems0; { /* [((VarId, Type))] */
1689 List mems; /* [((VarId, Type))] */
1690 List tvsInT; /* [VarId] and then [((VarId,Kind))] */
1691 List tvs; /* [((VarId,Kind))] */
1693 ZPair kinded_tv = hd(kinded_tvs);
1694 Text ct = textOf(tc_name);
1695 Pair newCtx = pair(tc_name, zfst(kinded_tv));
1697 printf ( "begin startGHCClass %s\n", textToStr(ct) );
1700 if (length(kinded_tvs) != 1) {
1701 ERRMSG(line) "Cannot presently handle multiparam type classes in ifaces"
1705 if (nonNull(findClass(ct))) {
1706 ERRMSG(line) "Repeated definition of class \"%s\"",
1709 } else if (nonNull(findTycon(ct))) {
1710 ERRMSG(line) "\"%s\" used as both class and type constructor",
1714 Class nw = newClass(ct);
1715 cclass(nw).text = ct;
1716 cclass(nw).line = line;
1717 cclass(nw).arity = 1;
1718 cclass(nw).head = ap(nw,mkOffset(0));
1719 cclass(nw).kinds = singleton(STAR); /* absolutely no idea at all */
1720 cclass(nw).instances = NIL; /* what the kind should be */
1721 cclass(nw).numSupers = length(ctxt);
1723 /* Kludge to map the single tyvar in the context to Offset 0.
1724 Need to do something better for multiparam type classes.
1726 cclass(nw).supers = tvsToOffsets(line,ctxt,
1727 singleton(pair(tv,STAR)));
1729 cclass(nw).supers = tvsToOffsets(line,ctxt,
1730 singleton(kinded_tv));
1733 for (mems=mems0; nonNull(mems); mems=tl(mems)) {
1734 ZPair mem = hd(mems);
1735 Type memT = zsnd(mem);
1736 Text mnt = textOf(zfst(mem));
1739 /* Stick the new context on the member type */
1740 memT = dictapsToQualtype(memT);
1741 if (whatIs(memT)==POLYTYPE) internal("startGHCClass");
1742 if (whatIs(memT)==QUAL) {
1744 pair(cons(newCtx,fst(snd(memT))),snd(snd(memT))));
1747 pair(singleton(newCtx),memT));
1750 /* Cook up a kind for the type. */
1751 tvsInT = ifTyvarsIn(memT);
1752 /* tvsInT :: [VarId] */
1754 /* ToDo: maximally bogus */
1755 for (tvs=tvsInT; nonNull(tvs); tvs=tl(tvs))
1756 hd(tvs) = zpair(hd(tvs),STAR);
1757 /* tvsIntT :: [((VarId,STAR))] */
1759 memT = mkPolyType(tvsToKind(tvsInT),memT);
1760 memT = tvsToOffsets(line,memT,tvsInT);
1762 /* Park the type back on the member */
1763 mem = zpair(zfst(mem),memT);
1765 /* Bind code to the member */
1769 "Repeated definition for class method \"%s\"",
1773 mn = newName(mnt,NIL);
1778 cclass(nw).members = mems0;
1779 cclass(nw).numMembers = length(mems0);
1782 * cclass(nw).dsels = ?;
1783 * cclass(nw).dbuild = ?;
1784 * cclass(nm).dcon = ?;
1785 * cclass(nm).defaults = ?;
1791 static Void finishGHCClass ( Tycon cls_tyc )
1796 Class nw = findClass ( textOf(cls_tyc) );
1798 printf ( "begin finishGHCClass %s\n", textToStr(cclass(nw).text) );
1800 if (isNull(nw)) internal("finishGHCClass");
1802 line = cclass(nw).line;
1803 ctr = - length(cclass(nw).members);
1804 assert (currentModule == cclass(nw).mod);
1806 cclass(nw).level = 0; /* (ADR) ToDo: 1 + max (map level supers) */
1807 cclass(nw).head = conidcellsToTycons(line,cclass(nw).head);
1808 cclass(nw).supers = conidcellsToTycons(line,cclass(nw).supers);
1809 cclass(nw).members = conidcellsToTycons(line,cclass(nw).members);
1811 for (mems=cclass(nw).members; nonNull(mems); mems=tl(mems)) {
1812 Pair mem = hd(mems); /* (VarId, Type) */
1813 Text txt = textOf(fst(mem));
1815 Name n = findName(txt);
1817 name(n).line = cclass(nw).line;
1819 name(n).number = ctr++;
1825 /* --------------------------------------------------------------------------
1827 * ------------------------------------------------------------------------*/
1829 Inst startGHCInstance (line,ktyvars,cls,var)
1831 List ktyvars; /* [((VarId,Kind))] */
1832 Type cls; /* Type */
1833 VarId var; { /* VarId */
1834 List tmp, tvs, ks, spec;
1839 Inst in = newInst();
1841 printf ( "begin startGHCInstance\n" );
1844 tvs = ifTyvarsIn(cls); /* :: [VarId] */
1846 The order of tvs is important for tvsToOffsets.
1847 tvs should be a permutation of ktyvars. Fish the tyvar kinds
1848 out of ktyvars and attach them to tvs.
1850 for (xs1=tvs; nonNull(xs1); xs1=tl(xs1)) {
1852 for (xs2=ktyvars; nonNull(xs2); xs2=tl(xs2))
1853 if (textOf(hd(xs1)) == textOf(zfst(hd(xs2))))
1855 if (isNull(k)) internal("startGHCInstance: finding kinds");
1856 hd(xs1) = zpair(hd(xs1),k);
1859 cls = tvsToOffsets(line,cls,tvs);
1862 spec = cons(fun(cls),spec);
1865 spec = reverse(spec);
1867 inst(in).line = line;
1868 inst(in).implements = NIL;
1869 inst(in).kinds = simpleKind(length(tvs)); /* do this right */
1870 inst(in).specifics = spec;
1871 inst(in).numSpecifics = length(spec);
1872 inst(in).head = cls;
1874 /* Figure out the name of the class being instanced, and store it
1875 at inst(in).c. finishGHCInstance will resolve it to a real Class. */
1877 Cell cl = inst(in).head;
1878 assert(whatIs(cl)==DICTAP);
1879 cl = unap(DICTAP,cl);
1881 assert ( isQCon(cl) );
1886 Name b = newName( /*inventText()*/ textOf(var),NIL);
1887 name(b).line = line;
1888 name(b).arity = length(spec); /* unused? */ /* and surely wrong */
1889 name(b).number = DFUNNAME;
1890 inst(in).builder = b;
1891 /* bindNameToClosure(b, lookupGHCClosure(inst(in).mod,var)); */
1898 static Void finishGHCInstance ( Inst in )
1905 printf ( "begin finishGHCInstance\n" );
1908 assert (nonNull(in));
1909 line = inst(in).line;
1910 assert (currentModule==inst(in).mod);
1912 /* inst(in).c is, prior to finishGHCInstance, a ConId or Tuple,
1913 since startGHCInstance couldn't possibly have resolved it to
1914 a Class at that point. We convert it to a Class now.
1918 c = findQualClassWithoutConsultingExportList(c);
1922 inst(in).head = conidcellsToTycons(line,inst(in).head);
1923 inst(in).specifics = conidcellsToTycons(line,inst(in).specifics);
1924 cclass(c).instances = cons(in,cclass(c).instances);
1928 /* --------------------------------------------------------------------------
1930 * ------------------------------------------------------------------------*/
1932 /* This is called from the startGHC* functions. It traverses a structure
1933 and converts varidcells, ie, type variables parsed by the interface
1934 parser, into Offsets, which is how Hugs wants to see them internally.
1935 The Offset for a type variable is determined by its place in the list
1936 passed as the second arg; the associated kinds are irrelevant.
1938 ((t1,t2)) denotes the typed (z-)pair of t1 and t2.
1941 /* tvsToOffsets :: LineNo -> Type -> [((VarId,Kind))] -> Type */
1942 static Type tvsToOffsets(line,type,ktyvars)
1945 List ktyvars; { /* [((VarId,Kind))] */
1946 switch (whatIs(type)) {
1953 case ZTUP2: /* convert to the untyped representation */
1954 return ap( tvsToOffsets(line,zfst(type),ktyvars),
1955 tvsToOffsets(line,zsnd(type),ktyvars) );
1957 return ap( tvsToOffsets(line,fun(type),ktyvars),
1958 tvsToOffsets(line,arg(type),ktyvars) );
1962 tvsToOffsets(line,monotypeOf(type),ktyvars)
1966 return pair(QUAL,pair(tvsToOffsets(line,fst(snd(type)),ktyvars),
1967 tvsToOffsets(line,snd(snd(type)),ktyvars)));
1968 case DICTAP: /* bogus ?? */
1969 return ap(DICTAP, tvsToOffsets(line,snd(type),ktyvars));
1970 case UNBOXEDTUP: /* bogus?? */
1971 return ap(UNBOXEDTUP, tvsToOffsets(line,snd(type),ktyvars));
1972 case BANG: /* bogus?? */
1973 return ap(BANG, tvsToOffsets(line,snd(type),ktyvars));
1974 case VARIDCELL: /* Ha! some real work to do! */
1976 Text tv = textOf(type);
1977 for (; nonNull(ktyvars); i++,ktyvars=tl(ktyvars)) {
1980 assert(isZPair(hd(ktyvars)));
1981 varid = zfst(hd(ktyvars));
1983 if (tv == tt) return mkOffset(i);
1985 ERRMSG(line) "Undefined type variable \"%s\"", textToStr(tv)
1990 fprintf(stderr, "tvsToOffsets: unknown stuff %d\n", whatIs(type));
1992 fprintf(stderr,"\n");
1996 return NIL; /* NOTREACHED */
2000 /* This is called from the finishGHC* functions. It traverses a structure
2001 and converts conidcells, ie, type constructors parsed by the interface
2002 parser, into Tycons (or Classes), which is how Hugs wants to see them
2003 internally. Calls to this fn have to be deferred to the second phase
2004 of interface loading (finishGHC* rather than startGHC*) so that all relevant
2005 Tycons or Classes have been loaded into the symbol tables and can be
2008 static Type conidcellsToTycons ( Int line, Type type )
2010 switch (whatIs(type)) {
2020 { Cell t; /* Tycon or Class */
2021 Text m = qmodOf(type);
2022 Module mod = findModule(m);
2025 "Undefined module in qualified name \"%s\"",
2030 t = findQualTyconWithoutConsultingExportList(type);
2031 if (nonNull(t)) return t;
2032 t = findQualClassWithoutConsultingExportList(type);
2033 if (nonNull(t)) return t;
2035 "Undefined qualified class or type \"%s\"",
2043 cl = findQualClass(type);
2044 if (nonNull(cl)) return cl;
2045 if (textOf(type)==findText("[]"))
2046 /* a hack; magically qualify [] into PrelBase.[] */
2047 return conidcellsToTycons(line,
2048 mkQualId(mkCon(findText("PrelBase")),type));
2049 tc = findQualTycon(type);
2050 if (nonNull(tc)) return tc;
2052 "Undefined class or type constructor \"%s\"",
2058 return ap( conidcellsToTycons(line,fun(type)),
2059 conidcellsToTycons(line,arg(type)) );
2060 case ZTUP2: /* convert to std pair */
2061 return ap( conidcellsToTycons(line,zfst(type)),
2062 conidcellsToTycons(line,zsnd(type)) );
2067 conidcellsToTycons(line,monotypeOf(type))
2071 return pair(QUAL,pair(conidcellsToTycons(line,fst(snd(type))),
2072 conidcellsToTycons(line,snd(snd(type)))));
2073 case DICTAP: /* :: ap(DICTAP, pair(Class,Type))
2074 Not sure if this is really the right place to
2075 convert it to the form Hugs wants, but will do so anyway.
2077 /* return ap(DICTAP, conidcellsToTycons(line, snd(type))); */
2079 Class cl = fst(unap(DICTAP,type));
2080 List args = snd(unap(DICTAP,type));
2082 conidcellsToTycons(line,pair(cl,args));
2085 return ap(UNBOXEDTUP, conidcellsToTycons(line, snd(type)));
2087 return ap(BANG, conidcellsToTycons(line, snd(type)));
2089 fprintf(stderr, "conidcellsToTycons: unknown stuff %d\n",
2092 fprintf(stderr,"\n");
2096 return NIL; /* NOTREACHED */
2100 /* Find out if a type mentions a type constructor not present in
2101 the supplied list of qualified tycons.
2103 static Bool allTypesKnown ( Type type,
2104 List aktys /* [QualId] */,
2107 switch (whatIs(type)) {
2114 return allTypesKnown(fun(type),aktys,thisMod)
2115 && allTypesKnown(arg(type),aktys,thisMod);
2117 return allTypesKnown(zfst(type),aktys,thisMod)
2118 && allTypesKnown(zsnd(type),aktys,thisMod);
2120 return allTypesKnown(unap(DICTAP,type),aktys,thisMod);
2123 if (textOf(type)==findText("[]"))
2124 /* a hack; magically qualify [] into PrelBase.[] */
2125 type = mkQualId(mkCon(findText("PrelBase")),type); else
2126 type = mkQualId(thisMod,type);
2129 if (isNull(qualidIsMember(type,aktys))) goto missing;
2135 fprintf(stderr, "allTypesKnown: unknown stuff %d\n", whatIs(type));
2136 print(type,10);printf("\n");
2137 internal("allTypesKnown");
2138 return TRUE; /*notreached*/
2141 printf ( "allTypesKnown: unknown " ); print(type,10); printf("\n");
2146 /* --------------------------------------------------------------------------
2149 * None of these do lookups or require that lookups have been resolved
2150 * so they can be performed while reading interfaces.
2151 * ------------------------------------------------------------------------*/
2153 /* tvsToKind :: [((VarId,Kind))] -> Kinds */
2154 static Kinds tvsToKind(tvs)
2155 List tvs; { /* [((VarId,Kind))] */
2158 for (rs=reverse(tvs); nonNull(rs); rs=tl(rs)) {
2159 if (whatIs(hd(rs)) != ZTUP2) internal("tvsToKind(1)");
2160 if (whatIs(zfst(hd(rs))) != VARIDCELL) internal("tvsToKind(2)");
2161 r = ap(zsnd(hd(rs)),r);
2167 static Int arityInclDictParams ( Type type )
2170 if (isPolyType(type)) type = monotypeOf(type);
2172 if (whatIs(type) == QUAL)
2174 arity += length ( fst(snd(type)) );
2175 type = snd(snd(type));
2177 while (isAp(type) && getHead(type)==typeArrow) {
2184 /* arity of a constructor with this type */
2185 static Int arityFromType(type)
2188 if (isPolyType(type)) {
2189 type = monotypeOf(type);
2191 if (whatIs(type) == QUAL) {
2192 type = snd(snd(type));
2194 if (whatIs(type) == EXIST) {
2195 type = snd(snd(type));
2197 if (whatIs(type)==RANK2) {
2198 type = snd(snd(type));
2200 while (isAp(type) && getHead(type)==typeArrow) {
2208 /* ifTyvarsIn :: Type -> [VarId]
2209 The returned list has no duplicates -- is a set.
2211 static List ifTyvarsIn(type)
2213 List vs = typeVarsIn(type,NIL,NIL,NIL);
2215 for (; nonNull(vs2); vs2=tl(vs2))
2216 if (whatIs(hd(vs2)) != VARIDCELL)
2217 internal("ifTyvarsIn");
2223 /* --------------------------------------------------------------------------
2224 * General object symbol query stuff
2225 * ------------------------------------------------------------------------*/
2227 #define EXTERN_SYMS \
2228 Sym(stg_gc_enter_1) \
2229 Sym(stg_gc_noregs) \
2237 Sym(stg_update_PAP) \
2238 Sym(stg_error_entry) \
2239 Sym(__ap_2_upd_info) \
2240 Sym(__ap_3_upd_info) \
2241 Sym(__ap_4_upd_info) \
2242 Sym(__ap_5_upd_info) \
2243 Sym(__ap_6_upd_info) \
2244 Sym(__sel_0_upd_info) \
2245 Sym(__sel_1_upd_info) \
2246 Sym(__sel_2_upd_info) \
2247 Sym(__sel_3_upd_info) \
2248 Sym(__sel_4_upd_info) \
2249 Sym(__sel_5_upd_info) \
2250 Sym(__sel_6_upd_info) \
2251 Sym(__sel_7_upd_info) \
2252 Sym(__sel_8_upd_info) \
2253 Sym(__sel_9_upd_info) \
2254 Sym(__sel_10_upd_info) \
2255 Sym(__sel_11_upd_info) \
2256 Sym(__sel_12_upd_info) \
2258 Sym(Upd_frame_info) \
2259 Sym(seq_frame_info) \
2260 Sym(CAF_BLACKHOLE_info) \
2261 Sym(IND_STATIC_info) \
2262 Sym(EMPTY_MVAR_info) \
2263 Sym(MUT_ARR_PTRS_FROZEN_info) \
2265 Sym(putMVarzh_fast) \
2266 Sym(newMVarzh_fast) \
2267 Sym(takeMVarzh_fast) \
2272 Sym(killThreadzh_fast) \
2273 Sym(waitReadzh_fast) \
2274 Sym(waitWritezh_fast) \
2275 Sym(CHARLIKE_closure) \
2276 Sym(INTLIKE_closure) \
2277 Sym(suspendThread) \
2279 Sym(stackOverflow) \
2280 Sym(int2Integerzh_fast) \
2281 Sym(stg_gc_unbx_r1) \
2283 Sym(makeForeignObjzh_fast) \
2284 Sym(__encodeDouble) \
2285 Sym(decodeDoublezh_fast) \
2287 Sym(isDoubleInfinite) \
2288 Sym(isDoubleDenormalized) \
2289 Sym(isDoubleNegativeZero) \
2290 Sym(__encodeFloat) \
2291 Sym(decodeFloatzh_fast) \
2293 Sym(isFloatInfinite) \
2294 Sym(isFloatDenormalized) \
2295 Sym(isFloatNegativeZero) \
2296 Sym(__int_encodeFloat) \
2297 Sym(__int_encodeDouble) \
2301 Sym(gcdIntegerzh_fast) \
2302 Sym(newArrayzh_fast) \
2303 Sym(unsafeThawArrayzh_fast) \
2304 Sym(newDoubleArrayzh_fast) \
2305 Sym(newFloatArrayzh_fast) \
2306 Sym(newAddrArrayzh_fast) \
2307 Sym(newWordArrayzh_fast) \
2308 Sym(newIntArrayzh_fast) \
2309 Sym(newCharArrayzh_fast) \
2310 Sym(newMutVarzh_fast) \
2311 Sym(quotRemIntegerzh_fast) \
2312 Sym(quotIntegerzh_fast) \
2313 Sym(remIntegerzh_fast) \
2314 Sym(divExactIntegerzh_fast) \
2315 Sym(divModIntegerzh_fast) \
2316 Sym(timesIntegerzh_fast) \
2317 Sym(minusIntegerzh_fast) \
2318 Sym(plusIntegerzh_fast) \
2319 Sym(addr2Integerzh_fast) \
2320 Sym(mkWeakzh_fast) \
2323 Sym(resetNonBlockingFd) \
2325 /* needed by libHS_cbits */ \
2327 Sym(__errno_location) \
2379 /* entirely bogus claims about types of these symbols */
2380 #define Sym(vvv) extern int vvv;
2381 #define SymX(vvv) /* nothing */
2386 #define Sym(vvv) { #vvv, &vvv },
2387 #define SymX(vvv) { #vvv, &vvv },
2396 void* lookupObjName ( char* nm )
2406 strncpy(nm2,nm,200);
2408 /* first see if it's an RTS name */
2409 for (k = 0; rtsTab[k].nm; k++)
2410 if (0==strcmp(nm2,rtsTab[k].nm))
2411 return rtsTab[k].ad;
2413 /* perhaps an extra-symbol ? */
2414 a = lookupOExtraTabName ( nm );
2417 /* if not an RTS name, look in the
2418 relevant module's object symbol table
2420 pp = strchr(nm2, '_');
2421 if (!pp || !isupper(nm2[0])) goto not_found;
2423 t = unZcodeThenFindText(nm2);
2425 if (isNull(m)) goto not_found;
2427 a = lookupOTabName ( m, nm ); /* RATIONALISE */
2432 "lookupObjName: can't resolve name `%s'\n",
2439 int is_dynamically_loaded_code_or_rodata_ptr ( char* p )
2441 OSectionKind sk = lookupSection(p);
2442 assert (sk != HUGS_SECTIONKIND_NOINFOAVAIL);
2443 return (sk == HUGS_SECTIONKIND_CODE_OR_RODATA);
2447 int is_dynamically_loaded_rwdata_ptr ( char* p )
2449 OSectionKind sk = lookupSection(p);
2450 assert (sk != HUGS_SECTIONKIND_NOINFOAVAIL);
2451 return (sk == HUGS_SECTIONKIND_RWDATA);
2455 int is_not_dynamically_loaded_ptr ( char* p )
2457 OSectionKind sk = lookupSection(p);
2458 assert (sk != HUGS_SECTIONKIND_NOINFOAVAIL);
2459 return (sk == HUGS_SECTIONKIND_OTHER);
2463 /* --------------------------------------------------------------------------
2465 * ------------------------------------------------------------------------*/
2467 Void interface(what)
2470 case POSTPREL: break;
2474 ifaces_outstanding = NIL;
2477 mark(ifaces_outstanding);
2482 /*-------------------------------------------------------------------------*/