1 /* $RCSfile: perl.h,v $$Revision: 4.1 $$Date: 92/08/07 18:25:56 $
3 * Copyright (c) 1991, Larry Wall
5 * You may distribute under the terms of either the GNU General Public
6 * License or the Artistic License, as specified in the README file.
9 * Revision 4.1 92/08/07 18:25:56 lwall
11 * Revision 4.0.1.6 92/06/08 14:55:10 lwall
12 * patch20: added Atari ST portability
13 * patch20: bcopy() and memcpy() now tested for overlap safety
14 * patch20: Perl now distinguishes overlapped copies from non-overlapped
15 * patch20: removed implicit int declarations on functions
17 * Revision 4.0.1.5 91/11/11 16:41:07 lwall
18 * patch19: uts wrongly defines S_ISDIR() et al
19 * patch19: too many preprocessors can't expand a macro right in #if
20 * patch19: added little-endian pack/unpack options
22 * Revision 4.0.1.4 91/11/05 18:06:10 lwall
23 * patch11: various portability fixes
24 * patch11: added support for dbz
25 * patch11: added some support for 64-bit integers
26 * patch11: hex() didn't understand leading 0x
28 * Revision 4.0.1.3 91/06/10 01:25:10 lwall
29 * patch10: certain pattern optimizations were botched
31 * Revision 4.0.1.2 91/06/07 11:28:33 lwall
32 * patch4: new copyright notice
33 * patch4: made some allowances for "semi-standard" C
34 * patch4: many, many itty-bitty portability fixes
36 * Revision 4.0.1.1 91/04/11 17:49:51 lwall
37 * patch1: hopefully straightened out some of the Xenix mess
39 * Revision 4.0 91/03/20 01:37:56 lwall
48 #include "config_c++.h"
54 # define BYTEORDER 0x1234
57 /* Overall memory policy? */
63 * The following contortions are brought to you on behalf of all the
64 * standards, semi-standards, de facto standards, not-so-de-facto standards
65 * of the world, as well as all the other botches anyone ever thought of.
66 * The basic theory is that if we work hard enough here, the rest of the
67 * code can be a lot prettier. Well, so much for theory. Sorry, Henry...
72 # define malloc Mymalloc
73 # define realloc Myremalloc
76 # define safemalloc malloc
77 # define saferealloc realloc
78 # define safefree free
81 /* work around some libPW problems */
86 /* define this once if either system, instead of cluttering up the src */
87 #if defined(MSDOS) || defined(atarist)
91 #if defined(__STDC__) || defined(_AIX) || defined(__stdc__) || defined(__cplusplus)
95 #if defined(STANDARD_C)
101 #if defined(HASVOLATILE) || defined(STANDARD_C)
103 # define VOL // to temporarily suppress warnings
105 # define VOL volatile
111 #define TAINT_IF(c) (tainted |= (c))
112 #define TAINT_NOT (tainted = 0)
113 #define TAINT_PROPER(s) if (tainting) taint_proper(no_security, s)
114 #define TAINT_ENV() if (tainting) taint_env()
124 # define getpgrp getpgrp2
131 # define setpgrp setpgrp2
139 # ifdef PARAM_NEEDS_TYPES
140 # include <sys/types.h>
142 # include <sys/param.h>
146 /* Use all the "standard" definitions? */
150 # define MEM_SIZE size_t
152 typedef unsigned int MEM_SIZE;
153 #endif /* STANDARD_C */
155 #if defined(HAS_MEMCMP) && defined(mips) && defined(ultrix)
162 extern char * memcpy P((char*, char*, int));
168 # define memcpy(d,s,l) bcopy(s,d,l)
170 # define memcpy(d,s,l) my_bcopy(s,d,l)
173 #endif /* HAS_MEMCPY */
178 extern char *memset P((char*, int, int));
181 # define memzero(d,l) memset(d,0,l)
185 # define memzero(d,l) bzero(d,l)
187 # define memzero(d,l) my_bzero(d,l)
190 #endif /* HAS_MEMSET */
195 extern int memcmp P((char*, char*, int));
200 # define memcmp(s1,s2,l) my_memcmp(s1,s2,l)
202 #endif /* HAS_MEMCMP */
204 /* we prefer bcmp slightly for comparisons that don't care about ordering */
207 # define bcmp(s1,s2,l) memcmp(s1,s2,l)
209 #endif /* HAS_BCMP */
212 # if defined(HAS_BCOPY) && defined(SAFE_BCOPY)
213 # define memmove(d,s,l) bcopy(s,d,l)
215 # if defined(HAS_MEMCPY) && defined(SAFE_MEMCPY)
216 # define memmove(d,s,l) memcpy(d,s,l)
218 # define memmove(d,s,l) my_bcopy(s,d,l)
223 #ifndef _TYPES_ /* If types.h defines this it's easy. */
224 # ifndef major /* Does everyone's types.h define this? */
225 # include <sys/types.h>
230 # include <netinet/in.h>
233 #include <sys/stat.h>
235 #if defined(uts) || defined(UTekV)
242 # define S_ISDIR(P) (((P)&S_IFMT)==S_IFDIR)
243 # define S_ISCHR(P) (((P)&S_IFMT)==S_IFCHR)
244 # define S_ISBLK(P) (((P)&S_IFMT)==S_IFBLK)
245 # define S_ISREG(P) (((P)&S_IFMT)==S_IFREG)
246 # define S_ISFIFO(P) (((P)&S_IFMT)==S_IFIFO)
248 # define S_ISLNK(P) (((P)&S_IFMT)==S_IFLNK)
257 # ifdef SYSTIMEKERNEL
260 # include <sys/time.h>
261 # ifdef SYSTIMEKERNEL
267 #include <sys/times.h>
270 #if defined(HAS_STRERROR) && (!defined(HAS_MKDIR) || !defined(HAS_RMDIR))
277 extern int errno; /* ANSI allows errno to be an lvalue expr */
283 char *strerror P((int));
286 extern char *sys_errlist[];
287 # define strerror(e) \
288 ((e) < 0 || (e) >= sys_nerr ? "(unknown)" : sys_errlist[e])
294 # include <sys/ioctl.h>
298 #if defined(mc300) || defined(mc500) || defined(mc700) || defined(mc6000)
299 # ifdef HAS_SOCKETPAIR
300 # undef HAS_SOCKETPAIR
315 #if defined(I_DIRENT)
317 # define DIRENT dirent
320 # include <sys/ndir.h>
321 # define DIRENT direct
325 # include <ndir.h> /* may be wrong in the future */
327 # include <sys/dir.h>
329 # define DIRENT direct
335 /* work around botch in SunOS 4.0.1 and 4.0.2 */
337 # define fputs(sv,fp) fprintf(fp,"%s",sv)
342 * The following gobbledygook brought to you on behalf of __STDC__.
343 * (I could just use #ifndef __STDC__, but this is more bulletproof
344 * in the face of half-implementations.)
349 # define S_IFMT _S_IFMT
351 # define S_IFMT 0170000
356 # define S_ISDIR(m) ((m & S_IFMT) == S_IFDIR)
360 # define S_ISCHR(m) ((m & S_IFMT) == S_IFCHR)
365 # define S_ISBLK(m) ((m & S_IFMT) == S_IFBLK)
367 # define S_ISBLK(m) (0)
372 # define S_ISREG(m) ((m & S_IFMT) == S_IFREG)
377 # define S_ISFIFO(m) ((m & S_IFMT) == S_IFIFO)
379 # define S_ISFIFO(m) (0)
385 # define S_ISLNK(m) _S_ISLNK(m)
388 # define S_ISLNK(m) ((m & S_IFMT) == _S_IFLNK)
391 # define S_ISLNK(m) ((m & S_IFMT) == S_IFLNK)
393 # define S_ISLNK(m) (0)
401 # define S_ISSOCK(m) _S_ISSOCK(m)
404 # define S_ISSOCK(m) ((m & S_IFMT) == _S_IFSOCK)
407 # define S_ISSOCK(m) ((m & S_IFMT) == S_IFSOCK)
409 # define S_ISSOCK(m) (0)
417 # define S_IRUSR S_IREAD
418 # define S_IWUSR S_IWRITE
419 # define S_IXUSR S_IEXEC
421 # define S_IRUSR 0400
422 # define S_IWUSR 0200
423 # define S_IXUSR 0100
425 # define S_IRGRP (S_IRUSR>>3)
426 # define S_IWGRP (S_IWUSR>>3)
427 # define S_IXGRP (S_IXUSR>>3)
428 # define S_IROTH (S_IRUSR>>6)
429 # define S_IWOTH (S_IWUSR>>6)
430 # define S_IXOTH (S_IXUSR>>6)
434 # define S_ISUID 04000
438 # define S_ISGID 02000
445 #if defined(cray) || defined(gould) || defined(i860)
446 # define SLOPPYDIVIDE
449 #if defined(cray) || defined(convex) || defined (uts) || BYTEORDER > 0xffff
457 # if defined(convex) || defined (uts)
458 # define quad long long
466 # define VOIDRET void
474 # include "unixish.h"
478 #define pause() sleep((32767<<16)+32767)
483 /* on BSDish systes we're safe */
484 # define IOCPARM_LEN(x) (((x) >> 16) & IOCPARM_MASK)
486 /* otherwise guess at what's safe */
487 # define IOCPARM_LEN(x) 256
491 typedef MEM_SIZE STRLEN;
493 typedef struct op OP;
494 typedef struct cop COP;
495 typedef struct unop UNOP;
496 typedef struct binop BINOP;
497 typedef struct listop LISTOP;
498 typedef struct logop LOGOP;
499 typedef struct condop CONDOP;
500 typedef struct pmop PMOP;
501 typedef struct svop SVOP;
502 typedef struct gvop GVOP;
503 typedef struct pvop PVOP;
504 typedef struct cvop CVOP;
505 typedef struct loop LOOP;
507 typedef struct Outrec Outrec;
508 typedef struct lstring Lstring;
509 typedef struct interpreter PerlInterpreter;
510 typedef struct ff FF;
511 typedef struct io IO;
512 typedef struct sv SV;
513 typedef struct av AV;
514 typedef struct hv HV;
515 typedef struct cv CV;
516 typedef struct regexp REGEXP;
517 typedef struct gp GP;
518 typedef struct sv GV;
519 typedef struct context CONTEXT;
520 typedef struct block BLOCK;
522 typedef struct magic MAGIC;
523 typedef struct xpv XPV;
524 typedef struct xpviv XPVIV;
525 typedef struct xpvnv XPVNV;
526 typedef struct xpvmg XPVMG;
527 typedef struct xpvlv XPVLV;
528 typedef struct xpvav XPVAV;
529 typedef struct xpvhv XPVHV;
530 typedef struct xpvgv XPVGV;
531 typedef struct xpvcv XPVCV;
532 typedef struct xpvbm XPVBM;
533 typedef struct xpvfm XPVFM;
534 typedef struct mgvtbl MGVTBL;
535 typedef union any ANY;
557 #if defined(iAPX286) || defined(M_I286) || defined(I80286)
563 char *sprintf P((char *, ...));
565 int sprintf P((char *, ...));
569 #if defined(htonl) && !defined(HAS_HTONL)
572 #if defined(htons) && !defined(HAS_HTONS)
575 #if defined(ntohl) && !defined(HAS_NTOHL)
578 #if defined(ntohs) && !defined(HAS_NTOHS)
582 #if (BYTEORDER & 0xffff) != 0x4321
588 #define htons my_swap
589 #define htonl my_htonl
590 #define ntohs my_swap
591 #define ntohl my_ntohl
594 #if (BYTEORDER & 0xffff) == 0x4321
603 * Little-endian byte order functions - 'v' for 'VAX', or 'reVerse'.
606 #if BYTEORDER != 0x1234
611 # if BYTEORDER == 0x4321
612 # define vtohl(x) ((((x)&0xFF)<<24) \
614 +(((x)&0x0000FF00)<<8) \
615 +(((x)&0x00FF0000)>>8) )
616 # define vtohs(x) ((((x)&0xFF)<<8) + (((x)>>8)&0xFF))
617 # define htovl(x) vtohl(x)
618 # define htovs(x) vtohs(x)
620 /* otherwise default to functions in util.c */
624 #define U_S(what) ((U16)(what))
625 #define U_I(what) ((unsigned int)(what))
626 #define U_L(what) ((U32)(what))
628 U32 cast_ulong P((double));
629 #define U_S(what) ((U16)cast_ulong(what))
630 #define U_I(what) ((unsigned int)cast_ulong(what))
631 #define U_L(what) (cast_ulong(what))
645 #define TMPPATH "/tmp/perl-eXXXXXX"
647 #define TMPPATH "plXXXXXX"
651 UIDTYPE getuid P(());
652 UIDTYPE geteuid P(());
653 GIDTYPE getgid P(());
654 GIDTYPE getegid P(());
660 #define DEBUG(a) if (debug) a
661 #define DEBUG_p(a) if (debug & 1) a
662 #define DEBUG_s(a) if (debug & 2) a
663 #define DEBUG_l(a) if (debug & 4) a
664 #define DEBUG_t(a) if (debug & 8) a
665 #define DEBUG_o(a) if (debug & 16) a
666 #define DEBUG_c(a) if (debug & 32) a
667 #define DEBUG_P(a) if (debug & 64) a
668 #define DEBUG_m(a) if (debug & 128) a
669 #define DEBUG_f(a) if (debug & 256) a
670 #define DEBUG_r(a) if (debug & 512) a
671 #define DEBUG_x(a) if (debug & 1024) a
672 #define DEBUG_u(a) if (debug & 2048) a
673 #define DEBUG_L(a) if (debug & 4096) a
674 #define DEBUG_H(a) if (debug & 8192) a
675 #define DEBUG_X(a) if (debug & 16384) a
695 #define YYMAXDEPTH 300
697 #define assert(what) DEB( { \
699 croak("Assertion failed: file \"%s\", line %d", \
700 __FILE__, __LINE__); \
705 I32 (*uf_val)P((I32, SV*));
706 I32 (*uf_set)P((I32, SV*));
710 /* Fix these up for __STDC__ */
711 char *mktemp P((char*));
712 double atof P((const char*));
715 /* All of these are in stdlib.h or time.h for ANSI C */
717 struct tm *gmtime(), *localtime();
718 char *strchr(), *strrchr();
719 char *strcpy(), *strcat();
720 #endif /* ! STANDARD_C */
729 double exp P((double));
730 double log P((double));
731 double sqrt P((double));
732 double modf P((double,int*));
733 double sin P((double));
734 double cos P((double));
735 double atan2 P((double,double));
736 double pow P((double,double));
743 char *crypt P((const char*, const char*));
744 char *getenv P((const char*));
745 long lseek P((int,int,int));
746 char *getlogin P((void));
750 int unlnk P((char*));
752 #define UNLINK unlink
757 #define setreuid(r,e) setresuid(r,e,-1)
763 #define setregid(r,e) setresgid(r,e,-1)
773 #define PAD_SV(po) pad_sv(po)
775 #define PAD_SV(po) curpad[po]
783 EXT PerlInterpreter *curinterp; /* currently running interpreter */
784 extern char ** environ; /* environment variables supplied via exec */
785 EXT int uid; /* current real user id */
786 EXT int euid; /* current effective user id */
787 EXT int gid; /* current real group id */
788 EXT int egid; /* current effective group id */
789 EXT bool nomemok; /* let malloc context handle nomem */
790 EXT U32 an; /* malloc sequence number */
791 EXT U32 cop_seqmax; /* statement sequence number */
792 EXT U32 op_seqmax; /* op sequence number */
793 EXT U32 sub_generation; /* inc to force methods to be looked up again */
794 EXT char ** origenviron;
797 /* Stack for currently executing thread--context switch must handle this. */
798 EXT SV ** stack_base; /* stack->array_ary */
799 EXT SV ** stack_sp; /* stack pointer now */
800 EXT SV ** stack_max; /* stack->array_ary + stack->array_max */
802 /* likewise for these */
804 EXT OP * op; /* current op--oughta be in a global register */
806 EXT I32 * scopestack; /* blocks we've entered */
807 EXT I32 scopestack_ix;
808 EXT I32 scopestack_max;
810 EXT ANY* savestack; /* to save non-local values on */
811 EXT I32 savestack_ix;
812 EXT I32 savestack_max;
814 EXT OP ** retstack; /* returns we've pushed */
816 EXT I32 retstack_max;
818 EXT I32 * markstack; /* stackmarks we're remembering */
819 EXT I32 * markstack_ptr; /* stackmarks we're remembering */
820 EXT I32 * markstack_max; /* stackmarks we're remembering */
828 EXT char tokenbuf[256];
829 EXT struct stat statbuf;
831 EXT struct tms timesbuf;
833 EXT STRLEN na; /* for use in SvPV when length is Not Applicable */
835 /* for tmp use in stupid debuggers */
840 /* handy constants */
841 EXT char * Yes INIT("1");
842 EXT char * No INIT("");
843 EXT char * hexdigit INIT("0123456789abcdef0123456789ABCDEFx");
844 EXT char * patleave INIT("\\.^$@dDwWsSbB+*?|()-nrtfeaxc0123456789[{]}");
845 EXT char * vert INIT("|");
847 EXT char warn_nosemi[]
848 INIT("Semicolon seems to be missing");
849 EXT char warn_reserved[]
850 INIT("Unquoted string \"%s\" may clash with future reserved word");
852 INIT("Unsuccessful %s on filename containing newline");
854 INIT("Can't use an undefined value to create a symbol");
856 INIT("Modification of non-creatable array value attempted, subscript %d");
858 INIT("Modification of non-creatable hash value attempted, subscript \"%s\"");
860 INIT("Modification of a read-only value attempted");
862 INIT("Out of memory!\n");
863 EXT char no_security[]
864 INIT("Insecure dependency in %s%s");
865 EXT char no_sock_func[]
866 INIT("Unsupported socket function \"%s\" called");
867 EXT char no_dir_func[]
868 INIT("Unsupported directory function \"%s\" called");
870 INIT("The %s function is unimplemented");
876 EXT char * cshname INIT(CSH);
881 EXT char *sig_name[] = {
885 EXT char *sig_name[];
889 EXT unsigned char fold[] = { /* fast case folding table */
890 0, 1, 2, 3, 4, 5, 6, 7,
891 8, 9, 10, 11, 12, 13, 14, 15,
892 16, 17, 18, 19, 20, 21, 22, 23,
893 24, 25, 26, 27, 28, 29, 30, 31,
894 32, 33, 34, 35, 36, 37, 38, 39,
895 40, 41, 42, 43, 44, 45, 46, 47,
896 48, 49, 50, 51, 52, 53, 54, 55,
897 56, 57, 58, 59, 60, 61, 62, 63,
898 64, 'a', 'b', 'c', 'd', 'e', 'f', 'g',
899 'h', 'i', 'j', 'k', 'l', 'm', 'n', 'o',
900 'p', 'q', 'r', 's', 't', 'u', 'v', 'w',
901 'x', 'y', 'z', 91, 92, 93, 94, 95,
902 96, 'A', 'B', 'C', 'D', 'E', 'F', 'G',
903 'H', 'I', 'J', 'K', 'L', 'M', 'N', 'O',
904 'P', 'Q', 'R', 'S', 'T', 'U', 'V', 'W',
905 'X', 'Y', 'Z', 123, 124, 125, 126, 127,
906 128, 129, 130, 131, 132, 133, 134, 135,
907 136, 137, 138, 139, 140, 141, 142, 143,
908 144, 145, 146, 147, 148, 149, 150, 151,
909 152, 153, 154, 155, 156, 157, 158, 159,
910 160, 161, 162, 163, 164, 165, 166, 167,
911 168, 169, 170, 171, 172, 173, 174, 175,
912 176, 177, 178, 179, 180, 181, 182, 183,
913 184, 185, 186, 187, 188, 189, 190, 191,
914 192, 193, 194, 195, 196, 197, 198, 199,
915 200, 201, 202, 203, 204, 205, 206, 207,
916 208, 209, 210, 211, 212, 213, 214, 215,
917 216, 217, 218, 219, 220, 221, 222, 223,
918 224, 225, 226, 227, 228, 229, 230, 231,
919 232, 233, 234, 235, 236, 237, 238, 239,
920 240, 241, 242, 243, 244, 245, 246, 247,
921 248, 249, 250, 251, 252, 253, 254, 255
924 EXT unsigned char fold[];
928 EXT unsigned char freq[] = { /* letter frequencies for mixed English/C */
929 1, 2, 84, 151, 154, 155, 156, 157,
930 165, 246, 250, 3, 158, 7, 18, 29,
931 40, 51, 62, 73, 85, 96, 107, 118,
932 129, 140, 147, 148, 149, 150, 152, 153,
933 255, 182, 224, 205, 174, 176, 180, 217,
934 233, 232, 236, 187, 235, 228, 234, 226,
935 222, 219, 211, 195, 188, 193, 185, 184,
936 191, 183, 201, 229, 181, 220, 194, 162,
937 163, 208, 186, 202, 200, 218, 198, 179,
938 178, 214, 166, 170, 207, 199, 209, 206,
939 204, 160, 212, 216, 215, 192, 175, 173,
940 243, 172, 161, 190, 203, 189, 164, 230,
941 167, 248, 227, 244, 242, 255, 241, 231,
942 240, 253, 169, 210, 245, 237, 249, 247,
943 239, 168, 252, 251, 254, 238, 223, 221,
944 213, 225, 177, 197, 171, 196, 159, 4,
945 5, 6, 8, 9, 10, 11, 12, 13,
946 14, 15, 16, 17, 19, 20, 21, 22,
947 23, 24, 25, 26, 27, 28, 30, 31,
948 32, 33, 34, 35, 36, 37, 38, 39,
949 41, 42, 43, 44, 45, 46, 47, 48,
950 49, 50, 52, 53, 54, 55, 56, 57,
951 58, 59, 60, 61, 63, 64, 65, 66,
952 67, 68, 69, 70, 71, 72, 74, 75,
953 76, 77, 78, 79, 80, 81, 82, 83,
954 86, 87, 88, 89, 90, 91, 92, 93,
955 94, 95, 97, 98, 99, 100, 101, 102,
956 103, 104, 105, 106, 108, 109, 110, 111,
957 112, 113, 114, 115, 116, 117, 119, 120,
958 121, 122, 123, 124, 125, 126, 127, 128,
959 130, 131, 132, 133, 134, 135, 136, 137,
960 138, 139, 141, 142, 143, 144, 145, 146
963 EXT unsigned char freq[];
966 /*****************************************************************************/
967 /* This lexer/parser stuff is currently global since yacc is hard to reenter */
968 /*****************************************************************************/
977 EXT FILE * VOL rsfp INIT(Nullfp);
980 EXT char * oldbufptr;
981 EXT char * oldoldbufptr;
983 EXT expectation expect INIT(XBLOCK); /* how to interpret ambiguous tokens */
985 EXT I32 multi_start; /* 1st line of multi-line string */
986 EXT I32 multi_end; /* last line of multi-line string */
987 EXT I32 multi_open; /* delimiter of said string */
988 EXT I32 multi_close; /* delimiter of said string */
991 EXT I32 error_count; /* how many errors so far, max 10 */
992 EXT I32 subline; /* line this subroutine began on */
993 EXT SV * subname; /* name of current subroutine */
995 EXT AV * comppad; /* storage for lexically scoped temporaries */
996 EXT AV * comppadname; /* variable names for "my" variables */
997 EXT I32 comppadnamefill;/* last "introduced" variable offset */
998 EXT I32 padix; /* max used index in current "register" pad */
1001 EXT SV * evstr; /* op_fold_const() temp string cache */
1002 EXT I32 thisexpr; /* name id for nothing_in_common() */
1003 EXT char * last_uni; /* position of last named-unary operator */
1004 EXT char * last_lop; /* position of last list operator */
1005 EXT bool in_format; /* we're compiling a run_format */
1006 EXT bool in_my; /* we're compiling a "my" declaration */
1007 EXT I32 needblockscope INIT(TRUE); /* block overhead needed? */
1009 EXT I32 cryptseen; /* has fast crypt() been initialized? */
1012 /**************************************************************************/
1013 /* This regexp stuff is global since it always happens within 1 expr eval */
1014 /**************************************************************************/
1016 EXT char * regprecomp; /* uncompiled string. */
1017 EXT char * regparse; /* Input-scan pointer. */
1018 EXT char * regxend; /* End of input for compile */
1019 EXT I32 regnpar; /* () count. */
1020 EXT char * regcode; /* Code-emit pointer; ®dummy = don't. */
1021 EXT I32 regsize; /* Code size. */
1022 EXT I32 regfold; /* are we folding? */
1023 EXT I32 regsawbracket; /* Did we do {d,d} trick? */
1024 EXT I32 regsawback; /* Did we see \1, ...? */
1026 EXT char * reginput; /* String-input pointer. */
1027 EXT char regprev; /* char before regbol, \n if none */
1028 EXT char * regbol; /* Beginning of input, for ^ check. */
1029 EXT char * regeol; /* End of input, for $ check. */
1030 EXT char ** regstartp; /* Pointer to startp array. */
1031 EXT char ** regendp; /* Ditto for endp. */
1032 EXT char * reglastparen; /* Similarly for lastparen. */
1033 EXT char * regtill; /* How far we are required to go. */
1034 EXT I32 regmyp_size;
1035 EXT char ** regmystartp;
1036 EXT char ** regmyendp;
1038 /***********************************************/
1039 /* Global only to current interpreter instance */
1040 /***********************************************/
1045 struct interpreter {
1048 #define IINIT(x) INIT(x)
1051 /* pseudo environmental stuff */
1053 IEXT char ** Iorigargv;
1057 IEXT char * Iorigfilename;
1062 IEXT char Ipatchlevel[6];
1063 IEXT char * Inrs IINIT("\n");
1064 IEXT U32 Inrschar IINIT('\n'); /* final char of rs, or 0777 if none */
1065 IEXT I32 Inrslen IINIT(1);
1066 IEXT bool Ipreprocess;
1071 IEXT bool Idoswitches;
1073 IEXT bool Idoextract;
1074 IEXT bool Isawampersand; /* must save all match strings */
1075 IEXT bool Isawstudy; /* do fbm_instr on all strings */
1076 IEXT bool Isawi; /* study must assume case insensitive */
1079 IEXT bool Ido_undump; /* -u or dump seen? */
1080 IEXT char * Iinplace;
1081 IEXT char * Ie_tmpname;
1083 IEXT VOL U32 Idebug;
1086 /* magical thingies */
1087 IEXT time_t Ibasetime; /* $^T */
1088 IEXT I32 Iarybase; /* $[ */
1089 IEXT SV * Iformfeed; /* $^L */
1090 IEXT char * Ichopset IINIT(" \n-"); /* $: */
1091 IEXT char * Irs IINIT("\n"); /* $/ */
1092 IEXT U32 Irschar IINIT('\n'); /* final char of rs, or 0777 if none */
1093 IEXT I32 Irslen IINIT(1);
1095 IEXT char * Iofs; /* $, */
1097 IEXT char * Iors; /* $\ */
1099 IEXT char * Iofmt; /* $# */
1100 IEXT I32 Imaxsysfd IINIT(MAXSYSFD); /* top fd to pass to subprocesses */
1101 IEXT int Imultiline; /* $*--do strings hold >1 line? */
1102 IEXT U16 Istatusvalue; /* $? */
1104 IEXT struct stat Istatcache; /* _ */
1106 IEXT SV * Istatname IINIT(Nullsv);
1108 /* shortcuts to various I/O objects */
1110 IEXT GV * Ilast_in_gv;
1113 IEXT GV * Idefoutgv;
1114 IEXT GV * Icuroutgv;
1115 IEXT GV * Iargvoutgv;
1117 /* shortcuts to regexp stuff */
1121 IEXT PMOP * Icurpm; /* what to do \ interps from */
1122 IEXT I32 * Iscreamfirst;
1123 IEXT I32 * Iscreamnext;
1124 IEXT I32 Imaxscream IINIT(-1);
1125 IEXT SV * Ilastscream;
1127 /* shortcuts to debugging objects */
1131 IEXT SV * IDBsingle;
1133 IEXT SV * IDBsignal;
1134 IEXT AV * Ilineary; /* lines of script for debugger */
1135 IEXT AV * Idbargs; /* args to call listed by caller function */
1138 IEXT HV * Idefstash; /* main symbol table */
1139 IEXT HV * Icurstash; /* symbol table for current package */
1140 IEXT HV * Idebstash; /* symbol table for perldb package */
1141 IEXT SV * Icurstname; /* name of current package */
1142 IEXT AV * Ibeginav; /* names of BEGIN subroutines */
1143 IEXT AV * Iendav; /* names of END subroutines */
1144 IEXT AV * Ipad; /* storage for lexically scoped temporaries */
1145 IEXT AV * Ipadname; /* variable names for "my" variables */
1147 /* memory management */
1148 IEXT SV * Ifreestrroot;
1149 IEXT SV ** Itmps_stack;
1150 IEXT I32 Itmps_ix IINIT(-1);
1151 IEXT I32 Itmps_floor IINIT(-1);
1152 IEXT I32 Itmps_max IINIT(-1);
1154 /* funky return mechanisms */
1155 IEXT I32 Ilastspbase;
1157 IEXT int Iforkprocess; /* so do_open |- can return proc# */
1159 /* subprocess state */
1160 IEXT AV * Ifdpid; /* keep fd-to-pid mappings for my_popen */
1161 IEXT HV * Ipidstatus; /* keep pid-to-status mappings for waitpid */
1163 /* internal state */
1164 IEXT VOL int Iin_eval; /* trap "fatal" errors? */
1165 IEXT OP * Irestartop; /* Are we propagating an error from croak? */
1166 IEXT int Idelaymagic; /* ($<,$>) = ... */
1167 IEXT bool Idirty; /* clean before rerunning */
1168 IEXT bool Ilocalizing; /* are we processing a local() list? */
1169 IEXT bool Itainted; /* using variables controlled by $< */
1170 IEXT bool Itainting; /* doing taint checks */
1174 IEXT I32 Idlmax IINIT(128);
1175 IEXT char * Idebname;
1176 IEXT char * Idebdelim;
1178 /* current interpreter roots */
1179 IEXT OP * Imain_root;
1180 IEXT OP * Imain_start;
1181 IEXT OP * Ieval_root;
1182 IEXT OP * Ieval_start;
1184 /* runtime control stuff */
1185 IEXT COP * VOL Icurcop IINIT(&compiling);
1186 IEXT line_t Icopline IINIT(NOLINE);
1187 IEXT CONTEXT * Icxstack;
1188 IEXT I32 Icxstack_ix IINIT(-1);
1189 IEXT I32 Icxstack_max IINIT(128);
1190 IEXT jmp_buf Itop_env;
1193 IEXT AV * Istack; /* THE STACK */
1194 IEXT AV * Imainstack; /* the stack when nothing funny is happening */
1195 IEXT SV ** Imystack_base; /* stack->array_ary */
1196 IEXT SV ** Imystack_sp; /* stack pointer now */
1197 IEXT SV ** Imystack_max; /* stack->array_ary + stack->array_max */
1199 /* format accumulators */
1200 IEXT SV * Iformtarget;
1201 IEXT SV * Ibodytarget;
1202 IEXT SV * Itoptarget;
1204 /* statics moved here for shared library purposes */
1205 IEXT SV Istrchop; /* return value from chop */
1206 IEXT int Ifilemode; /* so nextargv() can preserve mode */
1207 IEXT int Ilastfd; /* what to preserve mode on */
1208 IEXT char * Ioldname; /* what to preserve mode on */
1209 IEXT char ** IArgv; /* stuff to free from do_aexec, vfork safe */
1210 IEXT char * ICmd; /* stuff to free from do_aexec, vfork safe */
1211 IEXT OP * Isortcop; /* user defined sort routine */
1212 IEXT HV * Isortstash; /* which is in some package or other */
1213 IEXT GV * Ifirstgv; /* $a */
1214 IEXT GV * Isecondgv; /* $b */
1215 IEXT AV * Isortstack; /* temp stack during pp_sort() */
1216 IEXT AV * Isignalstack; /* temp stack during sighandler() */
1217 IEXT SV * Imystrk; /* temp key string for do_each() */
1218 IEXT I32 Idumplvl; /* indentation level on syntax tree dump */
1219 IEXT PMOP * Ioldlastpm; /* for saving regexp context during debugger */
1220 IEXT I32 Igensym; /* next symbol for getsym() to define */
1221 IEXT bool Ipreambled;
1222 IEXT int Ilaststatval IINIT(-1);
1223 IEXT I32 Ilaststype IINIT(OP_STAT);
1231 struct interpreter {
1248 /* The following must follow proto.h */
1251 MGVTBL vtbl_sv = {magic_get,
1255 MGVTBL vtbl_env = {0, 0, 0, 0, 0};
1256 MGVTBL vtbl_envelem = {0, magic_setenv,
1258 MGVTBL vtbl_sig = {0, 0, 0, 0, 0};
1259 MGVTBL vtbl_sigelem = {0, magic_setsig,
1261 MGVTBL vtbl_pack = {0, 0,
1263 MGVTBL vtbl_packelem = {magic_getpack,
1267 MGVTBL vtbl_dbline = {0, magic_setdbline,
1269 MGVTBL vtbl_isa = {0, magic_setisa,
1271 MGVTBL vtbl_isaelem = {0, magic_setisa,
1273 MGVTBL vtbl_arylen = {magic_getarylen,
1276 MGVTBL vtbl_glob = {magic_getglob,
1279 MGVTBL vtbl_mglob = {0, magic_setmglob,
1281 MGVTBL vtbl_taint = {magic_gettaint,magic_settaint,
1283 MGVTBL vtbl_substr = {0, magic_setsubstr,
1285 MGVTBL vtbl_vec = {0, magic_setvec,
1287 MGVTBL vtbl_bm = {0, magic_setbm,
1289 MGVTBL vtbl_uvar = {magic_getuvar,
1294 EXT MGVTBL vtbl_env;
1295 EXT MGVTBL vtbl_envelem;
1296 EXT MGVTBL vtbl_sig;
1297 EXT MGVTBL vtbl_sigelem;
1298 EXT MGVTBL vtbl_pack;
1299 EXT MGVTBL vtbl_packelem;
1300 EXT MGVTBL vtbl_dbline;
1301 EXT MGVTBL vtbl_isa;
1302 EXT MGVTBL vtbl_isaelem;
1303 EXT MGVTBL vtbl_arylen;
1304 EXT MGVTBL vtbl_glob;
1305 EXT MGVTBL vtbl_mglob;
1306 EXT MGVTBL vtbl_taint;
1307 EXT MGVTBL vtbl_substr;
1308 EXT MGVTBL vtbl_vec;
1310 EXT MGVTBL vtbl_uvar;