2 /* --------------------------------------------------------------------------
3 * Primitives for manipulating global data structures
5 * The Hugs 98 system is Copyright (c) Mark P Jones, Alastair Reid, the
6 * Yale Haskell Group, and the Oregon Graduate Institute of Science and
7 * Technology, 1994-1999, All rights reserved. It is distributed as
8 * free software under the license in the file "License", which is
9 * included in the distribution.
11 * $RCSfile: storage.c,v $
13 * $Date: 2000/01/05 15:57:41 $
14 * ------------------------------------------------------------------------*/
24 /*#define DEBUG_SHOWUSE*/
26 /* --------------------------------------------------------------------------
27 * local function prototypes:
28 * ------------------------------------------------------------------------*/
30 static Int local hash Args((String));
31 static Int local saveText Args((Text));
32 static Module local findQualifier Args((Text));
33 static Void local hashTycon Args((Tycon));
34 static List local insertTycon Args((Tycon,List));
35 static Void local hashName Args((Name));
36 static List local insertName Args((Name,List));
37 static Void local patternError Args((String));
38 static Bool local stringMatch Args((String,String));
39 static Bool local typeInvolves Args((Type,Type));
40 static Cell local markCell Args((Cell));
41 static Void local markSnd Args((Cell));
42 static Cell local lowLevelLastIn Args((Cell));
43 static Cell local lowLevelLastOut Args((Cell));
44 Module local moduleOfScript Args((Script));
45 Script local scriptThisFile Args((Text));
47 /* --------------------------------------------------------------------------
50 * provides storage for the characters making up identifier and symbol
51 * names, string literals, character constants etc...
53 * All character strings are stored in a large character array, with textHw
54 * pointing to the next free position. Lookup in the array is improved using
55 * a hash table. Internally, text strings are represented by integer offsets
56 * from the beginning of the array to the string in question.
58 * Where memory permits, the use of multiple hashtables gives a significant
59 * increase in performance, particularly when large source files are used.
61 * Each string in the array is terminated by a zero byte. No string is
62 * stored more than once, so that it is safe to test equality of strings by
63 * comparing the corresponding offsets.
65 * Special text values (beyond the range of the text array table) are used
66 * to generate unique `new variable names' as required.
68 * The same text storage is also used to hold text values stored in a saved
69 * expression. This grows downwards from the top of the text table (and is
70 * not included in the hash table).
71 * ------------------------------------------------------------------------*/
73 #define TEXTHSZ 512 /* Size of Text hash table */
74 #define NOTEXT ((Text)(~0)) /* Empty bucket in Text hash table */
75 static Text textHw; /* Next unused position */
76 static Text savedText = NUM_TEXT; /* Start of saved portion of text */
77 static Text nextNewText; /* Next new text value */
78 static Text nextNewDText; /* Next new dict text value */
79 static char DEFTABLE(text,NUM_TEXT);/* Storage of character strings */
80 static Text textHash[TEXTHSZ][NUM_TEXTH]; /* Hash table storage */
82 String textToStr(t) /* find string corresp to given Text*/
84 static char newVar[16];
86 if (0<=t && t<NUM_TEXT) /* standard char string */
89 sprintf(newVar,"d%d",-t); /* dictionary variable */
91 sprintf(newVar,"v%d",t-NUM_TEXT); /* normal variable */
95 String identToStr(v) /*find string corresp to given ident or qualified name*/
98 internal("identToStr");
104 case CONOPCELL : return text+textOf(v);
106 case QUALIDENT : { Text pos = textHw;
108 while (pos+1 < savedText && text[t]!=0) {
109 text[pos++] = text[t++];
111 if (pos+1 < savedText) {
115 while (pos+1 < savedText && text[t]!=0) {
116 text[pos++] = text[t++];
122 internal("identToStr2");
123 return 0; /* NOTREACHED */
126 Text inventText() { /* return new unused variable name */
127 return nextNewText++;
130 Text inventDictText() { /* return new unused dictvar name */
131 return nextNewDText--;
134 Bool inventedText(t) /* Signal TRUE if text has been */
135 Text t; { /* generated internally */
136 return (t<0 || t>=NUM_TEXT);
139 #define MAX_FIXLIT 100
140 Text fixLitText(t) /* fix literal text that might include \ */
142 String s = textToStr(t);
145 for(i = 0;i < MAX_FIXLIT-2 && *s;s++) {
151 if (i < MAX_FIXLIT-2) {
154 ERRMSG(0) "storage space exhausted for internal literal string"
157 return (findText(p));
161 static Int local hash(s) /* Simple hash function on strings */
165 for (v=((int)(*s))*8; *s; s++)
166 v += ((int)(*s))*(j++);
172 Text findText(s) /* Locate string in Text array */
176 Text textPos = textHash[h][hashno];
178 #define TryMatch { Text originalTextPos = textPos; \
180 for (t=s; *t==text[textPos]; textPos++,t++) \
182 return originalTextPos; \
184 #define Skip while (text[textPos++]) ;
186 while (textPos!=NOTEXT) {
188 if (++hashno<NUM_TEXTH) /* look in next hashtable entry */
189 textPos = textHash[h][hashno];
192 while (textPos < textHw) {
203 textPos = textHw; /* if not found, save in array */
204 if (textHw + (Int)strlen(s) + 1 > savedText) {
205 ERRMSG(0) "Character string storage space exhausted"
208 while ((text[textHw++] = *s++) != 0) {
210 if (hashno<NUM_TEXTH) { /* updating hash table as necessary */
211 textHash[h][hashno] = textPos;
212 if (hashno<NUM_TEXTH-1)
213 textHash[h][hashno+1] = NOTEXT;
219 static Int local saveText(t) /* Save text value in buffer */
220 Text t; { /* at top of text table */
221 String s = textToStr(t);
224 if (textHw + l + 1 > savedText) {
225 ERRMSG(0) "Character string storage space exhausted"
229 strcpy(text+savedText,s);
234 static int fromHexDigit ( char c )
237 case '0': case '1': case '2': case '3': case '4':
238 case '5': case '6': case '7': case '8': case '9':
240 case 'a': case 'A': return 10;
241 case 'b': case 'B': return 11;
242 case 'c': case 'C': return 12;
243 case 'd': case 'D': return 13;
244 case 'e': case 'E': return 14;
245 case 'f': case 'F': return 15;
251 /* returns findText (unZencode s) */
252 Text unZcodeThenFindText ( String s )
259 nn = 100 + 10 * strlen(s);
261 if (!p) internal ("unZcodeThenFindText: malloc failed");
266 if (n > nn-90) internal ("unZcodeThenFindText: result is too big");
267 if (*s != 'z' && *s != 'Z') {
272 if (!(*s)) goto parse_error;
274 case 'Z': p[n++] = 'Z'; break;
275 case 'C': p[n++] = ':'; break;
276 case 'L': p[n++] = '('; break;
277 case 'R': p[n++] = ')'; break;
278 case 'M': p[n++] = '['; break;
279 case 'N': p[n++] = ']'; break;
280 case 'z': p[n++] = 'z'; break;
281 case 'a': p[n++] = '&'; break;
282 case 'b': p[n++] = '|'; break;
283 case 'd': p[n++] = '$'; break;
284 case 'e': p[n++] = '='; break;
285 case 'g': p[n++] = '>'; break;
286 case 'h': p[n++] = '#'; break;
287 case 'i': p[n++] = '.'; break;
288 case 'l': p[n++] = '<'; break;
289 case 'm': p[n++] = '-'; break;
290 case 'n': p[n++] = '!'; break;
291 case 'p': p[n++] = '+'; break;
292 case 'q': p[n++] = '\\'; break;
293 case 'r': p[n++] = '\''; break;
294 case 's': p[n++] = '/'; break;
295 case 't': p[n++] = '*'; break;
296 case 'u': p[n++] = '^'; break;
297 case 'v': p[n++] = '%'; break;
299 if (!s[0] || !s[1]) goto parse_error;
300 if (fromHexDigit(s[0]) < 0 || fromHexDigit(s[1]) < 0) goto parse_error;
301 p[n++] = 16 * fromHexDigit(s[0]) + fromHexDigit(s[1]);
304 case '0': case '1': case '2': case '3': case '4':
305 case '5': case '6': case '7': case '8': case '9':
308 while (*s && isdigit((int)(*s))) {
309 i = 10 * i + (*s - '0');
312 if (*s != 'T') goto parse_error;
315 while (i >= 0) { p[n++] = ','; i--; };
329 fprintf ( stderr, "\nstring = `%s'\n", s );
330 internal ( "unZcodeThenFindText: parse error on above string");
331 return NIL; /*notreached*/
335 Text enZcodeThenFindText ( String s )
340 char toHex[16] = "0123456789ABCDEF";
343 nn = 100 + 10 * strlen(s);
345 if (!p) internal ("enZcodeThenFindText: malloc failed");
349 if (n > nn-90) internal ("enZcodeThenFindText: result is too big");
352 && (isalnum((int)(*s)) || *s == '_')) {
357 case '(': p[n++] = 'Z'; p[n++] = 'L'; break;
358 case ')': p[n++] = 'Z'; p[n++] = 'R'; break;
359 case '[': p[n++] = 'Z'; p[n++] = 'M'; break;
360 case ']': p[n++] = 'Z'; p[n++] = 'N'; break;
361 case ':': p[n++] = 'Z'; p[n++] = 'C'; break;
362 case 'Z': p[n++] = 'Z'; p[n++] = 'Z'; break;
363 case 'z': p[n++] = 'z'; p[n++] = 'z'; break;
364 case '&': p[n++] = 'z'; p[n++] = 'a'; break;
365 case '|': p[n++] = 'z'; p[n++] = 'b'; break;
366 case '$': p[n++] = 'z'; p[n++] = 'd'; break;
367 case '=': p[n++] = 'z'; p[n++] = 'e'; break;
368 case '>': p[n++] = 'z'; p[n++] = 'g'; break;
369 case '#': p[n++] = 'z'; p[n++] = 'h'; break;
370 case '.': p[n++] = 'z'; p[n++] = 'i'; break;
371 case '<': p[n++] = 'z'; p[n++] = 'l'; break;
372 case '-': p[n++] = 'z'; p[n++] = 'm'; break;
373 case '!': p[n++] = 'z'; p[n++] = 'n'; break;
374 case '+': p[n++] = 'z'; p[n++] = 'p'; break;
375 case '\'': p[n++] = 'z'; p[n++] = 'q'; break;
376 case '\\': p[n++] = 'z'; p[n++] = 'r'; break;
377 case '/': p[n++] = 'z'; p[n++] = 's'; break;
378 case '*': p[n++] = 'z'; p[n++] = 't'; break;
379 case '^': p[n++] = 'z'; p[n++] = 'u'; break;
380 case '%': p[n++] = 'z'; p[n++] = 'v'; break;
381 default: s--; p[n++] = 'z'; p[n++] = 'x';
382 p[n++] = toHex[(int)(*s)/16];
383 p[n++] = toHex[(int)(*s)%16];
394 Text textOf ( Cell c )
397 (whatIs(c)==VARIDCELL
398 || whatIs(c)==CONIDCELL
399 || whatIs(c)==VAROPCELL
400 || whatIs(c)==CONOPCELL
401 || whatIs(c)==STRCELL
402 || whatIs(c)==DICTVAR
405 fprintf(stderr, "\ntextOf: bad tag %d\n",whatIs(c) );
406 internal("textOf: bad tag");
411 /* --------------------------------------------------------------------------
414 * Currently, the only attributes that we store for each Ext value is the
415 * corresponding Text label. At some later stage, we may decide to cache
416 * types, predicates, etc. here as a space saving gesture. Given that Text
417 * comparison is cheap, and that this is an experimental implementation, we
418 * will use a straightforward linear search to locate Ext values from their
419 * corresponding Text labels; a hashing scheme can be introduced later if
420 * this turns out to be a problem.
421 * ------------------------------------------------------------------------*/
424 Text DEFTABLE(tabExt,NUM_EXT); /* Storage for Ext names */
427 Ext mkExt(t) /* Allocate or find an Ext value */
433 if (extHw-EXTMIN >= NUM_EXT) {
434 ERRMSG(0) "Ext storage space exhausted"
442 /* --------------------------------------------------------------------------
445 * A Tycon represents a user defined type constructor. Tycons are indexed
446 * by Text values ... a very simple hash function is used to improve lookup
447 * times. Tycon entries with the same hash code are chained together, with
448 * the most recent entry at the front of the list.
449 * ------------------------------------------------------------------------*/
451 #define TYCONHSZ 256 /* Size of Tycon hash table*/
452 #define tHash(x) ((x)%TYCONHSZ) /* Tycon hash function */
453 static Tycon tyconHw; /* next unused Tycon */
454 static Tycon DEFTABLE(tyconHash,TYCONHSZ); /* Hash table storage */
455 struct strTycon DEFTABLE(tabTycon,NUM_TYCON); /* Tycon storage */
457 Tycon newTycon(t) /* add new tycon to tycon table */
460 if (tyconHw-TYCMIN >= NUM_TYCON) {
461 ERRMSG(0) "Type constructor storage space exhausted"
464 tycon(tyconHw).text = t; /* clear new tycon record */
465 tycon(tyconHw).kind = NIL;
466 tycon(tyconHw).defn = NIL;
467 tycon(tyconHw).what = NIL;
468 tycon(tyconHw).conToTag = NIL;
469 tycon(tyconHw).tagToCon = NIL;
470 tycon(tyconHw).tuple = -1;
471 tycon(tyconHw).mod = currentModule;
472 tycon(tyconHw).itbl = NULL;
473 module(currentModule).tycons = cons(tyconHw,module(currentModule).tycons);
474 tycon(tyconHw).nextTyconHash = tyconHash[h];
475 tyconHash[h] = tyconHw;
480 Tycon findTycon(t) /* locate Tycon in tycon table */
482 Tycon tc = tyconHash[tHash(t)];
484 while (nonNull(tc) && tycon(tc).text!=t)
485 tc = tycon(tc).nextTyconHash;
489 Tycon addTycon(tc) /* Insert Tycon in tycon table - if no clash is caused */
492 assert(whatIs(tc)==TYCON || whatIs(tc)==TUPLE);
493 oldtc = findTycon(tycon(tc).text);
496 module(currentModule).tycons=cons(tc,module(currentModule).tycons);
502 static Void local hashTycon(tc) /* Insert Tycon into hash table */
504 if (!(isTycon(tc) || isTuple(tc))) {
505 printf("\nbad stuff: " ); print(tc,10); printf("\n");
506 assert(isTycon(tc) || isTuple(tc));
509 Text t = tycon(tc).text;
511 tycon(tc).nextTyconHash = tyconHash[h];
516 Tycon findQualTycon(id) /*locate (possibly qualified) Tycon in tycon table */
518 if (!isPair(id)) internal("findQualTycon");
522 return findTycon(textOf(id));
524 Text t = qtextOf(id);
525 Module m = findQualifier(qmodOf(id));
527 if (isNull(m)) return NIL;
528 for(es=module(m).exports; nonNull(es); es=tl(es)) {
530 if (isPair(e) && isTycon(fst(e)) && tycon(fst(e)).text==t)
535 default : internal("findQualTycon2");
537 return NIL; /* NOTREACHED */
540 Tycon addPrimTycon(t,kind,ar,what,defn) /* add new primitive type constr */
546 Tycon tc = newTycon(t);
548 tycon(tc).kind = kind;
549 tycon(tc).what = what;
550 tycon(tc).defn = defn;
551 tycon(tc).arity = ar;
555 static List local insertTycon(tc,ts) /* insert tycon tc into sorted list*/
560 String s = textToStr(tycon(tc).text);
562 while (nonNull(curr) && strCompare(s,textToStr(tycon(hd(curr)).text))>=0) {
563 if (hd(curr)==tc) /* just in case we get duplicates! */
569 tl(prev) = cons(tc,curr);
573 return cons(tc,curr);
576 List addTyconsMatching(pat,ts) /* Add tycons matching pattern pat */
577 String pat; /* to list of Tycons ts */
578 List ts; { /* Null pattern matches every tycon*/
579 Tycon tc; /* (Tycons with NIL kind excluded) */
580 for (tc=TYCMIN; tc<tyconHw; ++tc)
581 if (!pat || stringMatch(pat,textToStr(tycon(tc).text)))
582 if (nonNull(tycon(tc).kind))
583 ts = insertTycon(tc,ts);
587 Text ghcTupleText_n ( Int n )
591 if (n < 0 || n >= 100) internal("ghcTupleText_n");
593 for (i = 1; i <= n; i++) buf[i] = ',';
596 return findText(buf);
599 Text ghcTupleText(tup)
602 assert(isTuple(tup));
604 return ghcTupleText_n ( tupleOf(tup) );
608 Tycon mkTuple ( Int n )
612 internal("mkTuple: request for tuple of unsupported size");
613 for (i = TYCMIN; i < tyconHw; i++)
614 if (tycon(i).tuple == n) return i;
615 internal("mkTuple: request for non-existent tuple");
619 /* --------------------------------------------------------------------------
622 * A Name represents a top level binding of a value to an identifier.
623 * Such values may be a constructor function, a member function in a
624 * class, a user-defined or primitive value/function.
626 * Names are indexed by Text values ... a very simple hash functions speeds
627 * access to the table of Names and Name entries with the same hash value
628 * are chained together, with the most recent entry at the front of the
630 * ------------------------------------------------------------------------*/
632 #define NAMEHSZ 256 /* Size of Name hash table */
633 #define nHash(x) ((x)%NAMEHSZ) /* hash fn :: Text->Int */
634 Name nameHw; /* next unused name */
635 static Name DEFTABLE(nameHash,NAMEHSZ); /* Hash table storage */
636 struct strName DEFTABLE(tabName,NUM_NAME); /* Name table storage */
638 Name newName(t,parent) /* Add new name to name table */
642 if (nameHw-NAMEMIN >= NUM_NAME) {
643 ERRMSG(0) "Name storage space exhausted"
646 name(nameHw).text = t; /* clear new name record */
647 name(nameHw).line = 0;
648 name(nameHw).syntax = NO_SYNTAX;
649 name(nameHw).parent = parent;
650 name(nameHw).arity = 0;
651 name(nameHw).number = EXECNAME;
652 name(nameHw).defn = NIL;
653 name(nameHw).stgVar = NIL;
654 name(nameHw).callconv = NIL;
655 name(nameHw).type = NIL;
656 name(nameHw).primop = 0;
657 name(nameHw).mod = currentModule;
658 name(nameHw).itbl = NULL;
659 module(currentModule).names=cons(nameHw,module(currentModule).names);
660 name(nameHw).nextNameHash = nameHash[h];
661 nameHash[h] = nameHw;
665 Name findName(t) /* Locate name in name table */
667 Name n = nameHash[nHash(t)];
669 while (nonNull(n) && name(n).text!=t)
670 n = name(n).nextNameHash;
674 Name addName(nm) /* Insert Name in name table - if */
675 Name nm; { /* no clash is caused */
677 assert(whatIs(nm)==NAME);
678 oldnm = findName(name(nm).text);
681 module(currentModule).names=cons(nm,module(currentModule).names);
687 static Void local hashName(nm) /* Insert Name into hash table */
694 name(nm).nextNameHash = nameHash[h];
698 Name findQualName(id) /* Locate (possibly qualified) name*/
699 Cell id; { /* in name table */
701 internal("findQualName");
707 return findName(textOf(id));
709 Text t = qtextOf(id);
710 Module m = findQualifier(qmodOf(id));
712 if (isNull(m)) return NIL;
713 for(es=module(m).exports; nonNull(es); es=tl(es)) {
715 if (isName(e) && name(e).text==t)
717 else if (isPair(e) && DOTDOT==snd(e)) {
718 List subentities = NIL;
721 && (tycon(c).what==DATATYPE || tycon(c).what==NEWTYPE))
722 subentities = tycon(c).defn;
724 subentities = cclass(c).members;
725 for(; nonNull(subentities); subentities=tl(subentities)) {
726 if (!isName(hd(subentities)))
727 internal("findQualName3");
728 if (name(hd(subentities)).text == t)
729 return hd(subentities);
735 default : internal("findQualName2");
737 return 0; /* NOTREACHED */
741 Name nameFromStgVar ( StgVar v )
744 for (n = NAMEMIN; n < nameHw; n++)
745 if (name(n).stgVar == v) return n;
749 void* getHugs_AsmObject_for ( char* s )
752 Text t = findText(s);
754 for (n = NAMEMIN; n < nameHw; n++)
755 if (name(n).text == t) break;
756 if (n == nameHw) internal("getHugs_AsmObject_for(1)");
758 if (!isStgVar(v) || !isPtr(stgVarInfo(v)))
759 internal("getHugs_AsmObject_for(2)");
760 return ptrOf(stgVarInfo(v));
763 /* --------------------------------------------------------------------------
764 * Primitive functions:
765 * ------------------------------------------------------------------------*/
767 Module findFakeModule ( Text t )
769 Module m = findModule(t);
771 if (!module(m).fake) internal("findFakeModule");
774 module(m).fake = TRUE;
780 Name addWiredInBoxingTycon
781 ( String modNm, String typeNm, String constrNm,
782 Int arity, Int no, Int rep )
786 Text modT = findText(modNm);
787 Text typeT = findText(typeNm);
788 Text conT = findText(constrNm);
789 Module m = findFakeModule(modT);
792 n = newName(conT,NIL);
793 name(n).arity = arity;
794 name(n).number = cfunNo(no);
796 name(n).primop = (void*)rep;
799 tycon(t).what = DATATYPE;
804 Tycon addTupleTycon ( Int n )
811 for (i = TYCMIN; i < tyconHw; i++)
812 if (tycon(i).tuple == n) return i;
815 m = findFakeModule(findText(n==0 ? "PrelBase" : "PrelTup")); else
816 m = findModule(findText("Prelude"));
820 for (i = 0; i < n; i++) k = ap(STAR,k);
821 t = newTycon(ghcTupleText_n(n));
824 tycon(t).what = DATATYPE;
829 Tycon addWiredInEnumTycon ( String modNm, String typeNm,
830 List /*of Text*/ constrs )
834 Text modT = findText(modNm);
835 Text typeT = findText(typeNm);
836 Module m = findFakeModule(modT);
840 tycon(t).kind = STAR;
841 tycon(t).what = DATATYPE;
843 constrs = reverse(constrs);
845 for (; nonNull(constrs); constrs=tl(constrs),i--) {
846 Text conT = hd(constrs);
847 Name con = newName(conT,t);
848 name(con).number = cfunNo(i);
850 tycon(t).defn = cons(con, tycon(t).defn);
856 Name addPrimCfunREP(t,arity,no,rep) /* add primitive constructor func */
857 Text t; /* sets rep, not type */
860 Int rep; { /* Really AsmRep */
861 Name n = newName(t,NIL);
862 name(n).arity = arity;
863 name(n).number = cfunNo(no);
865 name(n).primop = (void*)rep;
870 Name addPrimCfun(t,arity,no,type) /* add primitive constructor func */
875 Name n = newName(t,NIL);
876 name(n).arity = arity;
877 name(n).number = cfunNo(no);
883 Int sfunPos(s,c) /* Find position of field with */
884 Name s; /* selector s in constructor c. */
888 for (; nonNull(cns); cns=tl(cns))
890 return intOf(snd(hd(cns)));
892 return 0;/* NOTREACHED */
895 static List local insertName(nm,ns) /* insert name nm into sorted list */
900 String s = textToStr(name(nm).text);
902 while (nonNull(curr) && strCompare(s,textToStr(name(hd(curr)).text))>=0) {
903 if (hd(curr)==nm) /* just in case we get duplicates! */
909 tl(prev) = cons(nm,curr);
913 return cons(nm,curr);
916 List addNamesMatching(pat,ns) /* Add names matching pattern pat */
917 String pat; /* to list of names ns */
918 List ns; { /* Null pattern matches every name */
919 Name nm; /* (Names with NIL type, or hidden */
921 for (nm=NAMEMIN; nm<nameHw; ++nm) /* or invented names are excluded) */
922 if (!inventedText(name(nm).text) && nonNull(name(nm).type)) {
923 String str = textToStr(name(nm).text);
924 if (str[0]!='_' && (!pat || stringMatch(pat,str)))
925 ns = insertName(nm,ns);
929 List mns = module(currentModule).names;
930 for(; nonNull(mns); mns=tl(mns)) {
932 if (!inventedText(name(nm).text)) {
933 String str = textToStr(name(nm).text);
934 if (str[0]!='_' && (!pat || stringMatch(pat,str)))
935 ns = insertName(nm,ns);
942 /* --------------------------------------------------------------------------
943 * A simple string matching routine
944 * `*' matches any sequence of zero or more characters
945 * `?' matches any single character exactly
946 * `@str' matches the string str exactly (ignoring any special chars)
947 * `\c' matches the character c only (ignoring special chars)
948 * c matches the character c only
949 * ------------------------------------------------------------------------*/
951 static Void local patternError(s) /* report error in pattern */
953 ERRMSG(0) "%s in pattern", s
957 static Bool local stringMatch(pat,str) /* match string against pattern */
963 case '\0' : return (*str=='\0');
966 if (stringMatch(pat+1,str))
971 case '?' : if (*str++=='\0')
976 case '[' : { Bool found = FALSE;
977 while (*++pat!='\0' && *pat!=']')
978 if (!found && ( pat[0] == *str ||
987 patternError("missing `]'");
995 case '\\' : if (*++pat == '\0')
996 patternError("extra trailing `\\'");
998 default : if (*pat++ != *str++)
1004 /* --------------------------------------------------------------------------
1005 * Storage of type classes, instances etc...:
1006 * ------------------------------------------------------------------------*/
1008 static Class classHw; /* next unused class */
1009 static List classes; /* list of classes in current scope */
1010 static Inst instHw; /* next unused instance record */
1012 struct strClass DEFTABLE(tabClass,NUM_CLASSES); /* table of class records */
1013 struct strInst far *tabInst; /* (pointer to) table of instances */
1015 Class newClass(t) /* add new class to class table */
1017 if (classHw-CLASSMIN >= NUM_CLASSES) {
1018 ERRMSG(0) "Class storage space exhausted"
1021 cclass(classHw).text = t;
1022 cclass(classHw).arity = 0;
1023 cclass(classHw).kinds = NIL;
1024 cclass(classHw).head = NIL;
1025 cclass(classHw).fds = NIL;
1026 cclass(classHw).xfds = NIL;
1027 cclass(classHw).dcon = NIL;
1028 cclass(classHw).supers = NIL;
1029 cclass(classHw).dsels = NIL;
1030 cclass(classHw).members = NIL;
1031 cclass(classHw).defaults = NIL;
1032 cclass(classHw).instances = NIL;
1033 classes=cons(classHw,classes);
1034 cclass(classHw).mod = currentModule;
1035 module(currentModule).classes=cons(classHw,module(currentModule).classes);
1039 Class classMax() { /* Return max Class in use ... */
1040 return classHw; /* This is a bit ugly, but it's not*/
1041 } /* worth a lot of effort right now */
1043 Class findClass(t) /* look for named class in table */
1047 for (cs=classes; nonNull(cs); cs=tl(cs)) {
1049 if (cclass(cl).text==t)
1055 Class addClass(c) /* Insert Class in class list */
1056 Class c; { /* - if no clash caused */
1058 assert(whatIs(c)==CLASS);
1059 oldc = findClass(cclass(c).text);
1061 classes=cons(c,classes);
1062 module(currentModule).classes=cons(c,module(currentModule).classes);
1069 Class findQualClass(c) /* Look for (possibly qualified) */
1070 Cell c; { /* class in class list */
1071 if (!isQualIdent(c)) {
1072 return findClass(textOf(c));
1074 Text t = qtextOf(c);
1075 Module m = findQualifier(qmodOf(c));
1079 for (es=module(m).exports; nonNull(es); es=tl(es)) {
1081 if (isPair(e) && isClass(fst(e)) && cclass(fst(e)).text==t)
1088 Inst newInst() { /* Add new instance to table */
1089 if (instHw-INSTMIN >= NUM_INSTS) {
1090 ERRMSG(0) "Instance storage space exhausted"
1093 inst(instHw).kinds = NIL;
1094 inst(instHw).head = NIL;
1095 inst(instHw).specifics = NIL;
1096 inst(instHw).implements = NIL;
1097 inst(instHw).builder = NIL;
1098 inst(instHw).mod = currentModule;
1104 extern Void printInst Args((Inst));
1108 Class cl = inst(in).c;
1109 Printf("%s-", textToStr(cclass(cl).text));
1110 printType(stdout,inst(in).t);
1112 #endif /* DEBUG_DICTS */
1114 Inst findFirstInst(tc) /* look for 1st instance involving */
1115 Tycon tc; { /* the type constructor tc */
1116 return findNextInst(tc,INSTMIN-1);
1119 Inst findNextInst(tc,in) /* look for next instance involving*/
1120 Tycon tc; /* the type constructor tc */
1121 Inst in; { /* starting after instance in */
1122 while (++in < instHw) {
1123 Cell pi = inst(in).head;
1124 for (; isAp(pi); pi=fun(pi))
1125 if (typeInvolves(arg(pi),tc))
1131 static Bool local typeInvolves(ty,tc) /* Test to see if type ty involves */
1132 Type ty; /* type constructor/tuple tc. */
1135 || (isAp(ty) && (typeInvolves(fun(ty),tc)
1136 || typeInvolves(arg(ty),tc)));
1140 /* Needed by finishGHCInstance to find classes, before the
1141 export list has been built -- so we can't use
1144 Class findQualClassWithoutConsultingExportList ( QualId q )
1154 t_class = textOf(q);
1157 t_class = qtextOf(q);
1160 for (cl = CLASSMIN; cl < classHw; cl++) {
1161 if (cclass(cl).text == t_class) {
1162 /* Class name is ok, but is this the right module? */
1163 if (isNull(t_mod) /* no module name specified */
1165 && t_mod == module(cclass(cl).mod).text)
1174 /* Same deal, except for Tycons. */
1175 Tycon findQualTyconWithoutConsultingExportList ( QualId q )
1185 t_tycon = textOf(q);
1188 t_tycon = qtextOf(q);
1191 for (tc = TYCMIN; tc < tyconHw; tc++) {
1192 if (tycon(tc).text == t_tycon) {
1193 /* Tycon name is ok, but is this the right module? */
1194 if (isNull(t_mod) /* no module name specified */
1196 && t_mod == module(tycon(tc).mod).text)
1205 /* Same deal, except for Names. */
1206 Name findQualNameWithoutConsultingExportList ( QualId q )
1212 assert(isQVar(q) || isQCon(q));
1214 if (isCon(q) || isVar(q)) {
1219 t_name = qtextOf(q);
1222 for (nm = NAMEMIN; nm < nameHw; nm++) {
1223 if (name(nm).text == t_name) {
1224 /* Name is ok, but is this the right module? */
1225 if (isNull(t_mod) /* no module name specified */
1227 && t_mod == module(name(nm).mod).text)
1236 /* returns List of QualId */
1237 List getAllKnownTyconsAndClasses ( void )
1242 for (tc = TYCMIN; tc < tyconHw; tc++) {
1243 /* almost certainly undue paranoia about duplicate avoidance, but .. */
1244 QualId q = mkQCon( module(tycon(tc).mod).text, tycon(tc).text );
1245 if (!qualidIsMember(q,xs))
1246 xs = cons ( q, xs );
1248 for (nw = CLASSMIN; nw < classHw; nw++) {
1249 QualId q = mkQCon( module(cclass(nw).mod).text, cclass(nw).text );
1250 if (!qualidIsMember(q,xs))
1251 xs = cons ( q, xs );
1256 /* --------------------------------------------------------------------------
1259 * Various parts of the system use a stack of cells. Most of the stack
1260 * operations are defined as macros, expanded inline.
1261 * ------------------------------------------------------------------------*/
1263 Cell DEFTABLE(cellStack,NUM_STACK); /* Storage for cells on stack */
1264 StackPtr sp; /* stack pointer */
1266 #if GIMME_STACK_DUMPS
1268 #define UPPER_DISP 5 /* # display entries on top of stack */
1269 #define LOWER_DISP 5 /* # display entries on bottom of stack*/
1271 Void hugsStackOverflow() { /* Report stack overflow */
1273 extern Cell evalRoots[];
1275 ERRMSG(0) "Control stack overflow" ETHEN
1278 if (rootsp>=UPPER_DISP+LOWER_DISP) {
1279 for (i=0; i<UPPER_DISP; i++) {
1280 ERRTEXT "\nwhile evaluating: " ETHEN
1281 ERREXPR(evalRoots[rootsp-i]);
1283 ERRTEXT "\n..." ETHEN
1284 for (i=LOWER_DISP-1; i>=0; i--) {
1285 ERRTEXT "\nwhile evaluating: " ETHEN
1286 ERREXPR(evalRoots[i]);
1290 for (i=rootsp; i>=0; i--) {
1291 ERRTEXT "\nwhile evaluating: " ETHEN
1292 ERREXPR(evalRoots[i]);
1300 #else /* !GIMME_STACK_DUMPS */
1302 Void hugsStackOverflow() { /* Report stack overflow */
1303 ERRMSG(0) "Control stack overflow"
1307 #endif /* !GIMME_STACK_DUMPS */
1309 /* --------------------------------------------------------------------------
1312 * A Module represents a user defined module.
1314 * Note: there are now two lookup mechanisms in the system:
1316 * 1) The exports from a module are stored in a big list.
1317 * We resolve qualified names, and import lists by linearly scanning
1318 * through this list.
1320 * 2) Unqualified imports and local definitions for the current module
1321 * are stored in hash tables (tyconHash and nameHash) or linear lists
1324 * ------------------------------------------------------------------------*/
1326 static Module moduleHw; /* next unused Module */
1327 struct Module DEFTABLE(tabModule,NUM_MODULE); /* Module storage */
1328 Module currentModule; /* Module currently being processed*/
1330 Bool isValidModule(m) /* is m a legitimate module id? */
1332 return (MODMIN <= m && m < moduleHw);
1335 Module newModule(t) /* add new module to module table */
1337 if (moduleHw-MODMIN >= NUM_MODULE) {
1338 ERRMSG(0) "Module storage space exhausted"
1341 module(moduleHw).text = t; /* clear new module record */
1342 module(moduleHw).qualImports = NIL;
1343 module(moduleHw).fake = FALSE;
1344 module(moduleHw).exports = NIL;
1345 module(moduleHw).tycons = NIL;
1346 module(moduleHw).names = NIL;
1347 module(moduleHw).classes = NIL;
1348 module(moduleHw).object = NULL;
1349 module(moduleHw).objectExtras = NULL;
1350 module(moduleHw).objectExtraNames = NIL;
1354 void ppModules ( void )
1357 fflush(stderr); fflush(stdout);
1358 printf ( "begin MODULES\n" );
1359 for (i = moduleHw-1; i >= MODMIN; i--)
1360 printf ( " %2d: %16s\n",
1361 i-MODMIN, textToStr(module(i).text)
1363 printf ( "end MODULES\n" );
1364 fflush(stderr); fflush(stdout);
1368 Module findModule(t) /* locate Module in module table */
1371 for(m=MODMIN; m<moduleHw; ++m) {
1372 if (module(m).text==t)
1378 Module findModid(c) /* Find module by name or filename */
1380 switch (whatIs(c)) {
1381 case STRCELL : { Script s = scriptThisFile(snd(c));
1382 return (s==-1) ? NIL : moduleOfScript(s);
1384 case CONIDCELL : return findModule(textOf(c));
1385 default : internal("findModid");
1387 return NIL;/*NOTUSED*/
1390 static local Module findQualifier(t) /* locate Module in import list */
1393 for (ms=module(currentModule).qualImports; nonNull(ms); ms=tl(ms)) {
1394 if (textOf(fst(hd(ms)))==t)
1398 if (module(currentModule).text==t)
1399 return currentModule;
1404 Void setCurrModule(m) /* set lookup tables for current module */
1407 assert(isModule(m));
1408 if (m!=currentModule) {
1409 currentModule = m; /* This is the only assignment to currentModule */
1410 for (i=0; i<TYCONHSZ; ++i)
1412 mapProc(hashTycon,module(m).tycons);
1413 for (i=0; i<NAMEHSZ; ++i)
1415 mapProc(hashName,module(m).names);
1416 classes = module(m).classes;
1420 Name jrsFindQualName ( Text mn, Text sn )
1425 for (m=MODMIN; m<moduleHw; m++)
1426 if (module(m).text == mn) break;
1427 if (m == moduleHw) return NIL;
1429 for (ns = module(m).names; nonNull(ns); ns=tl(ns))
1430 if (name(hd(ns)).text == sn) return hd(ns);
1436 char* nameFromOPtr ( void* p )
1440 for (m=MODMIN; m<moduleHw; m++) {
1441 char* nm = ocLookupAddr ( module(m).object, p );
1448 void* lookupOTabName ( Module m, char* sym )
1450 return ocLookupSym ( module(m).object, sym );
1454 void* lookupOExtraTabName ( char* sym )
1458 for (m = MODMIN; m < moduleHw; m++) {
1459 for (oc = module(m).objectExtras; oc; oc=oc->next) {
1460 void* ad = ocLookupSym ( oc, sym );
1468 OSectionKind lookupSection ( void* ad )
1472 for (m=MODMIN; m<moduleHw; m++) {
1474 = ocLookupSection ( module(m).object, ad );
1475 if (sect != HUGS_SECTIONKIND_NOINFOAVAIL)
1478 return HUGS_SECTIONKIND_OTHER;
1482 /* --------------------------------------------------------------------------
1483 * Script file storage:
1485 * script files are read into the system one after another. The state of
1486 * the stored data structures (except the garbage-collected heap) is recorded
1487 * before reading a new script. In the event of being unable to read the
1488 * script, or if otherwise requested, the system can be restored to its
1489 * original state immediately before the file was read.
1490 * ------------------------------------------------------------------------*/
1492 typedef struct { /* record of storage state prior to */
1493 Text file; /* reading script/module */
1507 #ifdef DEBUG_SHOWUSE
1508 static Void local showUse(msg,val,mx)
1511 Printf("%6s : %5d of %5d (%2d%%)\n",msg,val,mx,(100*val)/mx);
1515 static Script scriptHw; /* next unused script number */
1516 static script scripts[NUM_SCRIPTS]; /* storage for script records */
1519 void ppScripts ( void )
1522 fflush(stderr); fflush(stdout);
1523 printf ( "begin SCRIPTS\n" );
1524 for (i = scriptHw-1; i >= 0; i--)
1525 printf ( " %2d: %16s tH=%d mH=%d yH=%d "
1526 "nH=%d cH=%d iH=%d nnS=%d,%d\n",
1527 i, textToStr(scripts[i].file),
1528 scripts[i].textHw, scripts[i].moduleHw,
1529 scripts[i].tyconHw, scripts[i].nameHw,
1530 scripts[i].classHw, scripts[i].instHw,
1531 scripts[i].nextNewText, scripts[i].nextNewDText
1533 printf ( "end SCRIPTS\n" );
1534 fflush(stderr); fflush(stdout);
1537 Script startNewScript(f) /* start new script, keeping record */
1538 String f; { /* of status for later restoration */
1539 if (scriptHw >= NUM_SCRIPTS) {
1540 ERRMSG(0) "Too many script files in use"
1543 #ifdef DEBUG_SHOWUSE
1544 showUse("Text", textHw, NUM_TEXT);
1545 showUse("Module", moduleHw-MODMIN, NUM_MODULE);
1546 showUse("Tycon", tyconHw-TYCMIN, NUM_TYCON);
1547 showUse("Name", nameHw-NAMEMIN, NUM_NAME);
1548 showUse("Class", classHw-CLASSMIN, NUM_CLASSES);
1549 showUse("Inst", instHw-INSTMIN, NUM_INSTS);
1551 showUse("Ext", extHw-EXTMIN, NUM_EXT);
1554 scripts[scriptHw].file = findText( f ? f : "<nofile>" );
1555 scripts[scriptHw].textHw = textHw;
1556 scripts[scriptHw].nextNewText = nextNewText;
1557 scripts[scriptHw].nextNewDText = nextNewDText;
1558 scripts[scriptHw].moduleHw = moduleHw;
1559 scripts[scriptHw].tyconHw = tyconHw;
1560 scripts[scriptHw].nameHw = nameHw;
1561 scripts[scriptHw].classHw = classHw;
1562 scripts[scriptHw].instHw = instHw;
1564 scripts[scriptHw].extHw = extHw;
1569 Bool isPreludeScript() { /* Test whether this is the Prelude*/
1570 return (scriptHw==0);
1573 Bool moduleThisScript(m) /* Test if given module is defined */
1574 Module m; { /* in current script file */
1575 return scriptHw<1 || m>=scripts[scriptHw-1].moduleHw;
1578 Module lastModule() { /* Return module in current script file */
1579 return (moduleHw>MODMIN ? moduleHw-1 : modulePrelude);
1582 #define scriptThis(nm,t,tag) Script nm(x) \
1586 && x>=scripts[s].tag) \
1590 scriptThis(scriptThisName,Name,nameHw)
1591 scriptThis(scriptThisTycon,Tycon,tyconHw)
1592 scriptThis(scriptThisInst,Inst,instHw)
1593 scriptThis(scriptThisClass,Class,classHw)
1596 Module moduleOfScript(s)
1598 return (s==0) ? modulePrelude : scripts[s-1].moduleHw;
1601 String fileOfModule(m)
1604 if (m == modulePrelude) {
1607 for(s=0; s<scriptHw; ++s) {
1608 if (scripts[s].moduleHw == m) {
1609 return textToStr(scripts[s].file);
1615 Script scriptThisFile(f)
1618 for (s=0; s < scriptHw; ++s) {
1619 if (scripts[s].file == f) {
1623 if (f == findText(STD_PRELUDE)) {
1629 Void dropScriptsFrom(sno) /* Restore storage to state prior */
1630 Script sno; { /* to reading script sno */
1631 if (sno<scriptHw) { /* is there anything to restore? */
1633 textHw = scripts[sno].textHw;
1634 nextNewText = scripts[sno].nextNewText;
1635 nextNewDText = scripts[sno].nextNewDText;
1636 moduleHw = scripts[sno].moduleHw;
1637 tyconHw = scripts[sno].tyconHw;
1638 nameHw = scripts[sno].nameHw;
1639 classHw = scripts[sno].classHw;
1640 instHw = scripts[sno].instHw;
1642 dictHw = scripts[sno].dictHw;
1645 extHw = scripts[sno].extHw;
1649 for (i=moduleHw; i >= scripts[sno].moduleHw; --i) {
1650 if (module(i).objectFile) {
1651 printf("[bogus] closing objectFile for module %d\n",i);
1652 /*dlclose(module(i).objectFile);*/
1655 moduleHw = scripts[sno].moduleHw;
1657 for (i=0; i<TEXTHSZ; ++i) {
1659 while (j<NUM_TEXTH && textHash[i][j]!=NOTEXT
1660 && textHash[i][j]<textHw)
1663 textHash[i][j] = NOTEXT;
1667 for (i=0; i<TYCONHSZ; ++i) {
1670 for (i=0; i<NAMEHSZ; ++i) {
1674 for (i=CLASSMIN; i<classHw; i++) {
1675 List ins = cclass(i).instances;
1678 while (nonNull(ins)) {
1679 List temp = tl(ins);
1680 if (hd(ins)<instHw) {
1686 cclass(i).instances = rev(is);
1693 /* --------------------------------------------------------------------------
1696 * Provides a garbage collectable heap for storage of expressions etc.
1698 * Now incorporates a flat resource: A two-space collected extension of
1699 * the heap that provides storage for contiguous arrays of Cell storage,
1700 * cooperating with the garbage collection mechanisms for the main heap.
1701 * ------------------------------------------------------------------------*/
1703 Int heapSize = DEFAULTHEAP; /* number of cells in heap */
1704 Heap heapFst; /* array of fst component of pairs */
1705 Heap heapSnd; /* array of snd component of pairs */
1712 Bool consGC = TRUE; /* Set to FALSE to turn off gc from*/
1713 /* C stack; use with extreme care! */
1715 Int numGcs; /* number of garbage collections */
1716 Int cellsRecovered; /* number of cells recovered */
1718 static Cell freeList; /* free list of unused cells */
1719 static Cell lsave, rsave; /* save components of pair */
1723 static Int markCount, stackRoots;
1725 #define initStackRoots() stackRoots = 0
1726 #define recordStackRoot() stackRoots++
1739 #define start() markCount = 0
1740 #define end(thing,rs) \
1742 Printf("GC: %-18s: %4d cells, %4d roots.\n", thing, markCount, rs); \
1745 #define recordMark() markCount++
1747 #else /* !GC_STATISTICS */
1752 #define initStackRoots()
1753 #define recordStackRoot()
1756 #define end(thing,root)
1757 #define recordMark()
1759 #endif /* !GC_STATISTICS */
1761 Cell pair(l,r) /* Allocate pair (l, r) from */
1762 Cell l, r; { /* heap, garbage collecting first */
1763 Cell c = freeList; /* if necessary ... */
1775 freeList = snd(freeList);
1782 Void overwrite(dst,src) /* overwrite dst cell with src cell*/
1783 Cell dst, src; { /* both *MUST* be pairs */
1784 if (isPair(dst) && isPair(src)) {
1785 fst(dst) = fst(src);
1786 snd(dst) = snd(src);
1789 internal("overwrite");
1793 static Int marksSize;
1795 Cell markExpr(c) /* External interface to markCell */
1797 return isGenPair(c) ? markCell(c) : c;
1800 static Cell local markCell(c) /* Traverse part of graph marking */
1801 Cell c; { /* cells reachable from given root */
1802 /* markCell(c) is only called if c */
1804 { register int place = placeInSet(c);
1805 register int mask = maskInSet(c);
1806 if (marks[place]&mask)
1809 marks[place] |= mask;
1814 /* STACK_CHECK: Avoid stack overflows during recursive marking. */
1815 if (isGenPair(fst(c))) {
1817 fst(c) = markCell(fst(c));
1820 else if (isNull(fst(c)) || fst(c)>=BCSTAG) {
1828 static Void local markSnd(c) /* Variant of markCell used to */
1829 Cell c; { /* update snd component of cell */
1830 Cell t; /* using tail recursion */
1832 ma: t = c; /* Keep pointer to original pair */
1837 { register int place = placeInSet(c);
1838 register int mask = maskInSet(c);
1839 if (marks[place]&mask)
1842 marks[place] |= mask;
1847 if (isGenPair(fst(c))) {
1848 fst(c) = markCell(fst(c));
1851 else if (isNull(fst(c)) || fst(c)>=BCSTAG)
1856 Void markWithoutMove(n) /* Garbage collect cell at n, as if*/
1857 Cell n; { /* it was a cell ref, but don't */
1858 /* move cell so we don't have */
1859 /* to modify the stored value of n */
1866 Void garbageCollect() { /* Run garbage collector ... */
1867 Bool breakStat = breakOn(FALSE); /* disable break checking */
1873 jmp_buf regs; /* save registers on stack */
1877 for (i=0; i<marksSize; ++i) /* initialise mark set to empty */
1880 everybody(MARK); /* Mark all components of system */
1882 gcScanning(); /* scan mark set */
1889 for (i=1; i<=heapSize; i++) {
1890 if ((marks[place] & mask) == 0) {
1897 if (++j == bitsPerWord) {
1904 gcRecovered(recovered);
1905 breakOn(breakStat); /* restore break trapping if nec. */
1909 /* can only return if freeList is nonempty on return. */
1910 if (recovered<minRecovery || isNull(freeList)) {
1911 ERRMSG(0) "Garbage collection fails to reclaim sufficient space"
1914 cellsRecovered = recovered;
1917 /* --------------------------------------------------------------------------
1918 * Code for saving last expression entered:
1920 * This is a little tricky because some text values (e.g. strings or variable
1921 * names) may not be defined or have the same value when the expression is
1922 * recalled. These text values are therefore saved in the top portion of
1924 * ------------------------------------------------------------------------*/
1926 static Cell lastExprSaved; /* last expression to be saved */
1928 Void setLastExpr(e) /* save expression for later recall*/
1930 lastExprSaved = NIL; /* in case attempt to save fails */
1931 savedText = NUM_TEXT;
1932 lastExprSaved = lowLevelLastIn(e);
1935 static Cell local lowLevelLastIn(c) /* Duplicate expression tree (i.e. */
1936 Cell c; { /* acyclic graph) for later recall */
1937 if (isPair(c)) { /* Duplicating any text strings */
1938 if (isBoxTag(fst(c))) /* in case these are lost at some */
1939 switch (fst(c)) { /* point before the expr is reused */
1945 case STRCELL : return pair(fst(c),saveText(textOf(c)));
1946 default : return pair(fst(c),snd(c));
1949 return pair(lowLevelLastIn(fst(c)),lowLevelLastIn(snd(c)));
1953 return pair(EXTCOPY,saveText(extText(c)));
1959 Cell getLastExpr() { /* recover previously saved expr */
1960 return lowLevelLastOut(lastExprSaved);
1963 static Cell local lowLevelLastOut(c) /* As with lowLevelLastIn() above */
1964 Cell c; { /* except that Cells refering to */
1965 if (isPair(c)) { /* Text values are restored to */
1966 if (isBoxTag(fst(c))) /* appropriate values */
1973 case STRCELL : return pair(fst(c),
1974 findText(text+intValOf(c)));
1976 case EXTCOPY : return mkExt(findText(text+intValOf(c)));
1978 default : return pair(fst(c),snd(c));
1981 return pair(lowLevelLastOut(fst(c)),lowLevelLastOut(snd(c)));
1987 /* --------------------------------------------------------------------------
1988 * Miscellaneous operations on heap cells:
1989 * ------------------------------------------------------------------------*/
1991 /* Profiling suggests that the number of calls to whatIs() is typically */
1992 /* rather high. The recoded version below attempts to improve the average */
1993 /* performance for whatIs() using a binary search for part of the analysis */
1995 Cell whatIs(c) /* identify type of cell */
1998 register Cell fstc = fst(c);
1999 return isTag(fstc) ? fstc : AP;
2001 if (c<OFFMIN) return c;
2003 if (isExt(c)) return EXT;
2005 if (c>=INTMIN) return INTCELL;
2007 if (c>=NAMEMIN){if (c>=CLASSMIN) {if (c>=CHARMIN) return CHARCELL;
2009 else if (c>=INSTMIN) return INSTANCE;
2011 else if (c>=MODMIN) {if (c>=TYCMIN) return isTuple(c) ? TUPLE : TYCON;
2012 else return MODULE;}
2013 else if (c>=OFFMIN) return OFFSET;
2015 else return (c>=EXTMIN) ?
2022 register Cell fstc = fst(c);
2023 return isTag(fstc) ? fstc : AP;
2025 if (c>=INTMIN) return INTCELL;
2026 if (c>=CHARMIN) return CHARCELL;
2027 if (c>=CLASSMIN) return CLASS;
2028 if (c>=INSTMIN) return INSTANCE;
2029 if (c>=NAMEMIN) return NAME;
2030 if (c>=TYCMIN) return TYCON;
2031 if (c>=MODMIN) return MODULE;
2032 if (c>=OFFMIN) return OFFSET;
2034 if (c>=EXTMIN) return EXT;
2036 if (c>=TUPMIN) return TUPLE;
2041 /* A very, very simple printer.
2042 * Output is uglier than from printExp - but the printer is more
2043 * robust and can be used on any data structure irrespective of
2046 Void print Args((Cell, Int));
2047 Void print(c, depth)
2052 #if 0 /* Not in this version of Hugs */
2053 } else if (isPair(c) && !isGenPair(c)) {
2054 extern Void printEvalCell Args((Cell, Int));
2055 printEvalCell(c,depth);
2058 Int tag = whatIs(c);
2062 print(fst(c), depth-1);
2064 print(snd(c), depth-1);
2068 Printf("free(%d)", c);
2071 Printf("int(%d)", intOf(c));
2074 Printf("bignum(%s)", bignumToString(c));
2077 Printf("char('%c')", charOf(c));
2080 Printf("ptr(%p)",ptrOf(c));
2083 Printf("class(%d)", c-CLASSMIN);
2084 if (CLASSMIN <= c && c < classHw) {
2085 Printf("=\"%s\"", textToStr(cclass(c).text));
2089 Printf("instance(%d)", c - INSTMIN);
2092 Printf("name(%d)", c-NAMEMIN);
2093 if (NAMEMIN <= c && c < nameHw) {
2094 Printf("=\"%s\"", textToStr(name(c).text));
2098 Printf("tycon(%d)", c-TYCMIN);
2099 if (TYCMIN <= c && c < tyconHw)
2100 Printf("=\"%s\"", textToStr(tycon(c).text));
2103 Printf("module(%d)", c - MODMIN);
2106 Printf("Offset %d", offsetOf(c));
2109 Printf("%s", textToStr(ghcTupleText(c)));
2113 print(snd(c),depth-1);
2117 print(snd(c),depth-1);
2121 if (isPair(snd(c)) && isInt(fst(snd(c)))) {
2122 Printf("%d ", intOf(fst(snd(c))));
2123 print(snd(snd(c)),depth-1);
2125 print(snd(c),depth-1);
2142 Printf("{dict %d}",textOf(c));
2148 Printf("{id %s}",textToStr(textOf(c)));
2152 Printf("{ip %s}",textToStr(textOf(c)));
2155 Printf("?%s",textToStr(textOf(c)));
2159 Printf("{qid %s.%s}",textToStr(qmodOf(c)),textToStr(qtextOf(c)));
2163 print(fst(snd(c)),depth-1);
2165 print(snd(snd(c)),depth-1);
2170 print(snd(c),depth-1);
2175 print(snd(c),depth-1);
2180 print(fst(snd(c)),depth-1);
2182 print(snd(snd(c)),depth-1);
2187 print(fst(snd(c)),depth-1);
2189 print(snd(snd(c)),depth-1);
2193 Printf("FromQual(");
2194 print(fst(snd(c)),depth-1);
2196 print(snd(snd(c)),depth-1);
2200 Printf("StgVar%d=",-c);
2201 print(snd(c), depth-1);
2205 print(fst(snd(c)),depth-1);
2207 print(snd(snd(c)),depth-1);
2212 print(fst(snd(c)),depth-1);
2214 print(snd(snd(c)),depth-1);
2219 print(fst(snd(c)),depth-1);
2221 print(snd(snd(c)),depth-1);
2225 Printf("PrimCase(");
2226 print(fst(snd(c)),depth-1);
2228 print(snd(snd(c)),depth-1);
2233 print(snd(c),depth-1);
2237 Printf("(UNBOXEDTUP,");
2238 print(snd(c),depth-1);
2243 print(zfst(c),depth-1);
2245 print(zsnd(c),depth-1);
2249 Printf("<ZTriple ");
2250 print(zfst3(c),depth-1);
2252 print(zsnd3(c),depth-1);
2254 print(zthd3(c),depth-1);
2259 print(snd(c),depth-1);
2263 if (isBoxTag(tag)) {
2264 Printf("Tag(%d)=%d", c, tag);
2265 } else if (isConTag(tag)) {
2266 Printf("%d@(%d,",c,tag);
2267 print(snd(c), depth-1);
2270 } else if (c == tag) {
2271 Printf("Tag(%d)", c);
2273 Printf("Tag(%d)=%d", c, tag);
2282 Bool isVar(c) /* is cell a VARIDCELL/VAROPCELL ? */
2283 Cell c; { /* also recognises DICTVAR cells */
2285 (fst(c)==VARIDCELL || fst(c)==VAROPCELL || fst(c)==DICTVAR);
2288 Bool isCon(c) /* is cell a CONIDCELL/CONOPCELL ? */
2290 return isPair(c) && (fst(c)==CONIDCELL || fst(c)==CONOPCELL);
2293 Bool isQVar(c) /* is cell a [un]qualified varop/id? */
2295 if (!isPair(c)) return FALSE;
2298 case VAROPCELL : return TRUE;
2300 case QUALIDENT : return isVar(snd(snd(c)));
2302 default : return FALSE;
2306 Bool isQCon(c) /*is cell a [un]qualified conop/id? */
2308 if (!isPair(c)) return FALSE;
2311 case CONOPCELL : return TRUE;
2313 case QUALIDENT : return isCon(snd(snd(c)));
2315 default : return FALSE;
2319 Bool isQualIdent(c) /* is cell a qualified identifier? */
2321 return isPair(c) && (fst(c)==QUALIDENT);
2324 Bool eqQualIdent ( QualId c1, QualId c2 )
2326 assert(isQualIdent(c1));
2327 if (!isQualIdent(c2)) {
2328 assert(isQualIdent(c2));
2330 return qmodOf(c1)==qmodOf(c2) &&
2331 qtextOf(c1)==qtextOf(c2);
2334 Bool isIdent(c) /* is cell an identifier? */
2336 if (!isPair(c)) return FALSE;
2341 case CONOPCELL : return TRUE;
2343 case QUALIDENT : return TRUE;
2345 default : return FALSE;
2349 Bool isInt(c) /* cell holds integer value? */
2351 return isSmall(c) || (isPair(c) && fst(c)==INTCELL);
2354 Int intOf(c) /* find integer value of cell? */
2358 return isPair(c) ? (Int)(snd(c)) : (Int)(c-INTZERO);
2361 Cell mkInt(n) /* make cell representing integer */
2363 return (MINSMALLINT <= n && n <= MAXSMALLINT)
2368 #if SIZEOF_INTP == SIZEOF_INT
2369 typedef union {Int i; Ptr p;} IntOrPtr;
2375 return pair(PTRCELL,x.i);
2382 assert(fst(c) == PTRCELL);
2391 return pair(CPTRCELL,x.i);
2398 assert(fst(c) == CPTRCELL);
2402 #elif SIZEOF_INTP == 2*SIZEOF_INT
2403 typedef union {struct {Int i1; Int i2;} i; Ptr p;} IntOrPtr;
2409 return pair(PTRCELL,pair(mkInt(x.i.i1),mkInt(x.i.i2)));
2416 assert(fst(c) == PTRCELL);
2417 x.i.i1 = intOf(fst(snd(c)));
2418 x.i.i2 = intOf(snd(snd(c)));
2422 #warning "type Addr not supported on this architecture - don't use it"
2426 ERRMSG(0) "mkPtr: type Addr not supported on this architecture"
2433 ERRMSG(0) "ptrOf: type Addr not supported on this architecture"
2438 String stringNegate( s )
2446 strcpy(&t[1],s); /* ToDo: use strncpy instead */
2451 /* --------------------------------------------------------------------------
2453 * ------------------------------------------------------------------------*/
2455 Int length(xs) /* calculate length of list xs */
2458 for (; nonNull(xs); ++n)
2463 List appendOnto(xs,ys) /* Destructively prepend xs onto */
2464 List xs, ys; { /* ys by modifying xs ... */
2469 while (nonNull(tl(zs)))
2476 List dupOnto(xs,ys) /* non-destructively prepend xs backwards onto ys */
2479 for (; nonNull(xs); xs=tl(xs))
2480 ys = cons(hd(xs),ys);
2484 List dupListOnto(xs,ys) /* Duplicate spine of list xs onto ys */
2487 return revOnto(dupOnto(xs,NIL),ys);
2490 List dupList(xs) /* Duplicate spine of list xs */
2493 for (; nonNull(xs); xs=tl(xs))
2494 ys = cons(hd(xs),ys);
2498 List revOnto(xs,ys) /* Destructively reverse elements of*/
2499 List xs, ys; { /* list xs onto list ys... */
2502 while (nonNull(xs)) {
2511 QualId qualidIsMember ( QualId q, List xs )
2513 for (; nonNull(xs); xs=tl(xs)) {
2514 if (eqQualIdent(q, hd(xs)))
2520 Cell varIsMember(t,xs) /* Test if variable is a member of */
2521 Text t; /* given list of variables */
2523 for (; nonNull(xs); xs=tl(xs))
2524 if (t==textOf(hd(xs)))
2529 Name nameIsMember(t,ns) /* Test if name with text t is a */
2530 Text t; /* member of list of names xs */
2532 for (; nonNull(ns); ns=tl(ns))
2533 if (t==name(hd(ns)).text)
2538 Cell intIsMember(n,xs) /* Test if integer n is member of */
2539 Int n; /* given list of integers */
2541 for (; nonNull(xs); xs=tl(xs))
2542 if (n==intOf(hd(xs)))
2547 Cell cellIsMember(x,xs) /* Test for membership of specific */
2548 Cell x; /* cell x in list xs */
2550 for (; nonNull(xs); xs=tl(xs))
2556 Cell cellAssoc(c,xs) /* Lookup cell in association list */
2559 for (; nonNull(xs); xs=tl(xs))
2565 Cell cellRevAssoc(c,xs) /* Lookup cell in range of */
2566 Cell c; /* association lists */
2568 for (; nonNull(xs); xs=tl(xs))
2574 List replicate(n,x) /* create list of n copies of x */
2583 List diffList(from,take) /* list difference: from\take */
2584 List from, take; { /* result contains all elements of */
2585 List result = NIL; /* `from' not appearing in `take' */
2587 while (nonNull(from)) {
2588 List next = tl(from);
2589 if (!cellIsMember(hd(from),take)) {
2598 List deleteCell(xs, y) /* copy xs deleting pointers to y */
2602 for(;nonNull(xs);xs=tl(xs)) {
2605 result=cons(x,result);
2611 List take(n,xs) /* destructively truncate list to */
2612 Int n; /* specified length */
2618 while (1<n-- && nonNull(xs))
2625 List splitAt(n,xs) /* drop n things from front of list*/
2634 Cell nth(n,xs) /* extract n'th element of list */
2637 for(; n>0 && nonNull(xs); --n, xs=tl(xs)) {
2644 List removeCell(x,xs) /* destructively remove cell from */
2649 return tl(xs); /* element at front of list */
2653 for (; nonNull(curr); prev=curr, curr=tl(prev))
2655 tl(prev) = tl(curr);
2656 return xs; /* element in middle of list */
2660 return xs; /* here if element not found */
2663 List nubList(xs) /* nuke dups in list */
2664 List xs; { /* non destructive */
2666 for (; nonNull(xs); xs=tl(xs))
2667 if (isNull(cellIsMember(hd(xs),outs)))
2668 outs = cons(hd(xs),outs);
2674 /* --------------------------------------------------------------------------
2675 * Strongly-typed lists (z-lists) and tuples (experimental)
2676 * ------------------------------------------------------------------------*/
2678 static void z_tag_check ( Cell x, int tag, char* caller )
2682 sprintf(buf,"z_tag_check(%s): null\n", caller);
2685 if (whatIs(x) != tag) {
2687 "z_tag_check(%s): tag was %d, expected %d\n",
2688 caller, whatIs(x), tag );
2694 Cell zcons ( Cell x, Cell xs )
2696 if (!(isNull(xs) || whatIs(xs)==ZCONS))
2697 internal("zcons: ill typed tail");
2698 return ap(ZCONS,ap(x,xs));
2701 Cell zhd ( Cell xs )
2703 if (isNull(xs)) internal("zhd: empty list");
2704 z_tag_check(xs,ZCONS,"zhd");
2705 return fst( snd(xs) );
2708 Cell ztl ( Cell xs )
2710 if (isNull(xs)) internal("ztl: empty list");
2711 z_tag_check(xs,ZCONS,"zhd");
2712 return snd( snd(xs) );
2715 Int zlength ( ZList xs )
2718 while (nonNull(xs)) {
2719 z_tag_check(xs,ZCONS,"zlength");
2721 xs = snd( snd(xs) );
2726 ZList zreverse ( ZList xs )
2729 while (nonNull(xs)) {
2730 z_tag_check(xs,ZCONS,"zreverse");
2731 rev = zcons(zhd(xs),rev);
2737 Cell zsingleton ( Cell x )
2739 return zcons (x,NIL);
2742 Cell zdoubleton ( Cell x, Cell y )
2744 return zcons(x,zcons(y,NIL));
2748 Cell zpair ( Cell x1, Cell x2 )
2749 { return ap(ZTUP2,ap(x1,x2)); }
2750 Cell zfst ( Cell zpair )
2751 { z_tag_check(zpair,ZTUP2,"zfst"); return fst( snd(zpair) ); }
2752 Cell zsnd ( Cell zpair )
2753 { z_tag_check(zpair,ZTUP2,"zsnd"); return snd( snd(zpair) ); }
2755 Cell ztriple ( Cell x1, Cell x2, Cell x3 )
2756 { return ap(ZTUP3,ap(x1,ap(x2,x3))); }
2757 Cell zfst3 ( Cell zpair )
2758 { z_tag_check(zpair,ZTUP3,"zfst3"); return fst( snd(zpair) ); }
2759 Cell zsnd3 ( Cell zpair )
2760 { z_tag_check(zpair,ZTUP3,"zsnd3"); return fst(snd( snd(zpair) )); }
2761 Cell zthd3 ( Cell zpair )
2762 { z_tag_check(zpair,ZTUP3,"zthd3"); return snd(snd( snd(zpair) )); }
2764 Cell z4ble ( Cell x1, Cell x2, Cell x3, Cell x4 )
2765 { return ap(ZTUP4,ap(x1,ap(x2,ap(x3,x4)))); }
2766 Cell zsel14 ( Cell zpair )
2767 { z_tag_check(zpair,ZTUP4,"zsel14"); return fst( snd(zpair) ); }
2768 Cell zsel24 ( Cell zpair )
2769 { z_tag_check(zpair,ZTUP4,"zsel24"); return fst(snd( snd(zpair) )); }
2770 Cell zsel34 ( Cell zpair )
2771 { z_tag_check(zpair,ZTUP4,"zsel34"); return fst(snd(snd( snd(zpair) ))); }
2772 Cell zsel44 ( Cell zpair )
2773 { z_tag_check(zpair,ZTUP4,"zsel44"); return snd(snd(snd( snd(zpair) ))); }
2775 Cell z5ble ( Cell x1, Cell x2, Cell x3, Cell x4, Cell x5 )
2776 { return ap(ZTUP5,ap(x1,ap(x2,ap(x3,ap(x4,x5))))); }
2777 Cell zsel15 ( Cell zpair )
2778 { z_tag_check(zpair,ZTUP5,"zsel15"); return fst( snd(zpair) ); }
2779 Cell zsel25 ( Cell zpair )
2780 { z_tag_check(zpair,ZTUP5,"zsel25"); return fst(snd( snd(zpair) )); }
2781 Cell zsel35 ( Cell zpair )
2782 { z_tag_check(zpair,ZTUP5,"zsel35"); return fst(snd(snd( snd(zpair) ))); }
2783 Cell zsel45 ( Cell zpair )
2784 { z_tag_check(zpair,ZTUP5,"zsel45"); return fst(snd(snd(snd( snd(zpair) )))); }
2785 Cell zsel55 ( Cell zpair )
2786 { z_tag_check(zpair,ZTUP5,"zsel55"); return snd(snd(snd(snd( snd(zpair) )))); }
2789 Cell unap ( int tag, Cell c )
2792 if (whatIs(c) != tag) {
2793 sprintf(buf, "unap: specified %d, actual %d\n",
2800 /* --------------------------------------------------------------------------
2801 * Operations on applications:
2802 * ------------------------------------------------------------------------*/
2804 Int argCount; /* number of args in application */
2806 Cell getHead(e) /* get head cell of application */
2807 Cell e; { /* set number of args in argCount */
2808 for (argCount=0; isAp(e); e=fun(e))
2813 List getArgs(e) /* get list of arguments in function*/
2814 Cell e; { /* application: */
2815 List as; /* getArgs(f e1 .. en) = [e1,..,en] */
2817 for (as=NIL; isAp(e); e=fun(e))
2818 as = cons(arg(e),as);
2822 Cell nthArg(n,e) /* return nth arg in application */
2823 Int n; /* of function to m args (m>=n) */
2824 Cell e; { /* nthArg n (f x0 x1 ... xm) = xn */
2825 for (n=numArgs(e)-n-1; n>0; n--)
2830 Int numArgs(e) /* find number of arguments to expr */
2833 for (n=0; isAp(e); e=fun(e))
2838 Cell applyToArgs(f,args) /* destructively apply list of args */
2839 Cell f; /* to function f */
2841 while (nonNull(args)) {
2842 Cell temp = tl(args);
2843 tl(args) = hd(args);
2852 /* --------------------------------------------------------------------------
2854 * ------------------------------------------------------------------------*/
2856 /*---------------------------------------------------------------------------
2857 * GreenCard entry points
2859 * GreenCard generated code accesses Hugs data structures and functions
2860 * (only) via these functions (which are stored in the virtual function
2862 *-------------------------------------------------------------------------*/
2866 static Cell makeTuple Args((Int));
2867 static Cell makeInt Args((Int));
2868 static Cell makeChar Args((Char));
2869 static Char CharOf Args((Cell));
2870 static Cell makeFloat Args((FloatPro));
2871 static Void* derefMallocPtr Args((Cell));
2872 static Cell* Fst Args((Cell));
2873 static Cell* Snd Args((Cell));
2875 static Cell makeTuple(n) Int n; { return mkTuple(n); }
2876 static Cell makeInt(n) Int n; { return mkInt(n); }
2877 static Cell makeChar(n) Char n; { return mkChar(n); }
2878 static Char CharOf(n) Cell n; { return charOf(n); }
2879 static Cell makeFloat(n) FloatPro n; { return mkFloat(n); }
2880 static Void* derefMallocPtr(n) Cell n; { return derefMP(n); }
2881 static Cell* Fst(n) Cell n; { return (Cell*)&fst(n); }
2882 static Cell* Snd(n) Cell n; { return (Cell*)&snd(n); }
2884 HugsAPI1* hugsAPI1() {
2885 static HugsAPI1 api;
2886 static Bool initialised = FALSE;
2888 api.nameTrue = nameTrue;
2889 api.nameFalse = nameFalse;
2890 api.nameNil = nameNil;
2891 api.nameCons = nameCons;
2892 api.nameJust = nameJust;
2893 api.nameNothing = nameNothing;
2894 api.nameLeft = nameLeft;
2895 api.nameRight = nameRight;
2896 api.nameUnit = nameUnit;
2897 api.nameIORun = nameIORun;
2898 api.makeInt = makeInt;
2899 api.makeChar = makeChar;
2900 api.CharOf = CharOf;
2901 api.makeFloat = makeFloat;
2902 api.makeTuple = makeTuple;
2904 api.mkMallocPtr = mkMallocPtr;
2905 api.derefMallocPtr = derefMallocPtr;
2906 api.mkStablePtr = mkStablePtr;
2907 api.derefStablePtr = derefStablePtr;
2908 api.freeStablePtr = freeStablePtr;
2910 api.evalWithNoError = evalWithNoError;
2911 api.evalFails = evalFails;
2912 api.whnfArgs = &whnfArgs;
2913 api.whnfHead = &whnfHead;
2914 api.whnfInt = &whnfInt;
2915 api.whnfFloat = &whnfFloat;
2916 api.garbageCollect = garbageCollect;
2917 api.stackOverflow = hugsStackOverflow;
2918 api.internal = internal;
2919 api.registerPrims = registerPrims;
2920 api.addPrimCfun = addPrimCfun;
2921 api.inventText = inventText;
2924 api.cellStack = cellStack;
2930 #endif /* GREENCARD */
2933 /* --------------------------------------------------------------------------
2935 * ------------------------------------------------------------------------*/
2938 static void far* safeFarCalloc Args((Int,Int));
2939 static void far* safeFarCalloc(n,s) /* allocate table storage and check*/
2940 Int n, s; { /* for non-null return */
2941 void far* tab = farCalloc(n,s);
2943 ERRMSG(0) "Cannot allocate run-time tables"
2948 #define TABALLOC(v,t,n) v=(t far*)safeFarCalloc(n,sizeof(t));
2950 #define TABALLOC(v,t,n)
2958 case POSTPREL: break;
2960 case RESET : clearStack();
2962 /* the next 2 statements are particularly important
2963 * if you are using GLOBALfst or GLOBALsnd since the
2964 * corresponding registers may be reset to their
2965 * uninitialised initial values by a longjump.
2967 heapTopFst = heapFst + heapSize;
2968 heapTopSnd = heapSnd + heapSize;
2972 if (isNull(lastExprSaved))
2973 savedText = NUM_TEXT;
2978 for (i=NAMEMIN; i<nameHw; ++i) {
2979 mark(name(i).parent);
2981 mark(name(i).stgVar);
2984 end("Names", nameHw-NAMEMIN);
2987 for (i=MODMIN; i<moduleHw; ++i) {
2988 mark(module(i).tycons);
2989 mark(module(i).names);
2990 mark(module(i).classes);
2991 mark(module(i).exports);
2992 mark(module(i).qualImports);
2993 mark(module(i).objectExtraNames);
2995 end("Modules", moduleHw-MODMIN);
2998 for (i=TYCMIN; i<tyconHw; ++i) {
2999 mark(tycon(i).defn);
3000 mark(tycon(i).kind);
3001 mark(tycon(i).what);
3003 end("Type constructors", tyconHw-TYCMIN);
3006 for (i=CLASSMIN; i<classHw; ++i) {
3007 mark(cclass(i).head);
3008 mark(cclass(i).kinds);
3009 mark(cclass(i).fds);
3010 mark(cclass(i).xfds);
3011 mark(cclass(i).dsels);
3012 mark(cclass(i).supers);
3013 mark(cclass(i).members);
3014 mark(cclass(i).defaults);
3015 mark(cclass(i).instances);
3018 end("Classes", classHw-CLASSMIN);
3021 for (i=INSTMIN; i<instHw; ++i) {
3023 mark(inst(i).kinds);
3024 mark(inst(i).specifics);
3025 mark(inst(i).implements);
3027 end("Instances", instHw-INSTMIN);
3030 for (i=0; i<=sp; ++i)
3035 mark(lastExprSaved);
3038 end("Last expression", 3);
3043 end("C stack", stackRoots);
3048 case PREPREL : heapFst = heapAlloc(heapSize);
3049 heapSnd = heapAlloc(heapSize);
3051 if (heapFst==(Heap)0 || heapSnd==(Heap)0) {
3052 ERRMSG(0) "Cannot allocate heap storage (%d cells)",
3057 heapTopFst = heapFst + heapSize;
3058 heapTopSnd = heapSnd + heapSize;
3059 for (i=1; i<heapSize; ++i) {
3063 snd(-heapSize) = NIL;
3070 marksSize = bitArraySize(heapSize);
3071 if ((marks=(Int *)calloc(marksSize, sizeof(Int)))==0) {
3072 ERRMSG(0) "Unable to allocate gc markspace"
3076 TABALLOC(text, char, NUM_TEXT)
3077 TABALLOC(tyconHash, Tycon, TYCONHSZ)
3078 TABALLOC(tabTycon, struct strTycon, NUM_TYCON)
3079 TABALLOC(nameHash, Name, NAMEHSZ)
3080 TABALLOC(tabName, struct strName, NUM_NAME)
3081 TABALLOC(tabClass, struct strClass, NUM_CLASSES)
3082 TABALLOC(cellStack, Cell, NUM_STACK)
3083 TABALLOC(tabModule, struct Module, NUM_SCRIPTS)
3085 TABALLOC(tabExt, Text, NUM_EXT)
3090 nextNewText = NUM_TEXT;
3091 nextNewDText = (-1);
3092 lastExprSaved = NIL;
3093 savedText = NUM_TEXT;
3094 for (i=0; i<TEXTHSZ; ++i)
3095 textHash[i][0] = NOTEXT;
3101 for (i=0; i<TYCONHSZ; ++i)
3108 for (i=0; i<NAMEHSZ; ++i)
3119 tabInst = (struct strInst far *)
3120 farCalloc(NUM_INSTS,sizeof(struct strInst));
3123 ERRMSG(0) "Cannot allocate instance tables"
3133 /*-------------------------------------------------------------------------*/