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 # include <net/errno.h>
283 extern int errno; /* ANSI allows errno to be an lvalue expr */
289 char *strerror P((int));
292 extern char *sys_errlist[];
293 # define strerror(e) \
294 ((e) < 0 || (e) >= sys_nerr ? "(unknown)" : sys_errlist[e])
300 # include <sys/ioctl.h>
304 #if defined(mc300) || defined(mc500) || defined(mc700) || defined(mc6000)
305 # ifdef HAS_SOCKETPAIR
306 # undef HAS_SOCKETPAIR
321 #if defined(I_DIRENT)
323 # define DIRENT dirent
326 # include <sys/ndir.h>
327 # define DIRENT direct
331 # include <ndir.h> /* may be wrong in the future */
333 # include <sys/dir.h>
335 # define DIRENT direct
341 /* work around botch in SunOS 4.0.1 and 4.0.2 */
343 # define fputs(sv,fp) fprintf(fp,"%s",sv)
348 * The following gobbledygook brought to you on behalf of __STDC__.
349 * (I could just use #ifndef __STDC__, but this is more bulletproof
350 * in the face of half-implementations.)
355 # define S_IFMT _S_IFMT
357 # define S_IFMT 0170000
362 # define S_ISDIR(m) ((m & S_IFMT) == S_IFDIR)
366 # define S_ISCHR(m) ((m & S_IFMT) == S_IFCHR)
371 # define S_ISBLK(m) ((m & S_IFMT) == S_IFBLK)
373 # define S_ISBLK(m) (0)
378 # define S_ISREG(m) ((m & S_IFMT) == S_IFREG)
383 # define S_ISFIFO(m) ((m & S_IFMT) == S_IFIFO)
385 # define S_ISFIFO(m) (0)
391 # define S_ISLNK(m) _S_ISLNK(m)
394 # define S_ISLNK(m) ((m & S_IFMT) == _S_IFLNK)
397 # define S_ISLNK(m) ((m & S_IFMT) == S_IFLNK)
399 # define S_ISLNK(m) (0)
407 # define S_ISSOCK(m) _S_ISSOCK(m)
410 # define S_ISSOCK(m) ((m & S_IFMT) == _S_IFSOCK)
413 # define S_ISSOCK(m) ((m & S_IFMT) == S_IFSOCK)
415 # define S_ISSOCK(m) (0)
423 # define S_IRUSR S_IREAD
424 # define S_IWUSR S_IWRITE
425 # define S_IXUSR S_IEXEC
427 # define S_IRUSR 0400
428 # define S_IWUSR 0200
429 # define S_IXUSR 0100
431 # define S_IRGRP (S_IRUSR>>3)
432 # define S_IWGRP (S_IWUSR>>3)
433 # define S_IXGRP (S_IXUSR>>3)
434 # define S_IROTH (S_IRUSR>>6)
435 # define S_IWOTH (S_IWUSR>>6)
436 # define S_IXOTH (S_IXUSR>>6)
440 # define S_ISUID 04000
444 # define S_ISGID 02000
451 #if defined(cray) || defined(gould) || defined(i860)
452 # define SLOPPYDIVIDE
455 #if defined(cray) || defined(convex) || defined (uts) || BYTEORDER > 0xffff
463 # if defined(convex) || defined (uts)
464 # define quad long long
472 # define VOIDRET void
480 # include "unixish.h"
484 #define pause() sleep((32767<<16)+32767)
489 /* on BSDish systes we're safe */
490 # define IOCPARM_LEN(x) (((x) >> 16) & IOCPARM_MASK)
492 /* otherwise guess at what's safe */
493 # define IOCPARM_LEN(x) 256
497 typedef MEM_SIZE STRLEN;
499 typedef struct op OP;
500 typedef struct cop COP;
501 typedef struct unop UNOP;
502 typedef struct binop BINOP;
503 typedef struct listop LISTOP;
504 typedef struct logop LOGOP;
505 typedef struct condop CONDOP;
506 typedef struct pmop PMOP;
507 typedef struct svop SVOP;
508 typedef struct gvop GVOP;
509 typedef struct pvop PVOP;
510 typedef struct cvop CVOP;
511 typedef struct loop LOOP;
513 typedef struct Outrec Outrec;
514 typedef struct lstring Lstring;
515 typedef struct interpreter PerlInterpreter;
516 typedef struct ff FF;
517 typedef struct sv SV;
518 typedef struct av AV;
519 typedef struct hv HV;
520 typedef struct cv CV;
521 typedef struct regexp REGEXP;
522 typedef struct gp GP;
523 typedef struct sv GV;
524 typedef struct io IO;
525 typedef struct context CONTEXT;
526 typedef struct block BLOCK;
528 typedef struct magic MAGIC;
529 typedef struct xrv XRV;
530 typedef struct xpv XPV;
531 typedef struct xpviv XPVIV;
532 typedef struct xpvnv XPVNV;
533 typedef struct xpvmg XPVMG;
534 typedef struct xpvlv XPVLV;
535 typedef struct xpvav XPVAV;
536 typedef struct xpvhv XPVHV;
537 typedef struct xpvgv XPVGV;
538 typedef struct xpvcv XPVCV;
539 typedef struct xpvbm XPVBM;
540 typedef struct xpvfm XPVFM;
541 typedef struct xpvio XPVIO;
542 typedef struct mgvtbl MGVTBL;
543 typedef union any ANY;
565 #if defined(iAPX286) || defined(M_I286) || defined(I80286)
571 char *sprintf P((char *, ...));
573 int sprintf P((char *, ...));
577 #if defined(htonl) && !defined(HAS_HTONL)
580 #if defined(htons) && !defined(HAS_HTONS)
583 #if defined(ntohl) && !defined(HAS_NTOHL)
586 #if defined(ntohs) && !defined(HAS_NTOHS)
590 #if (BYTEORDER & 0xffff) != 0x4321
596 #define htons my_swap
597 #define htonl my_htonl
598 #define ntohs my_swap
599 #define ntohl my_ntohl
602 #if (BYTEORDER & 0xffff) == 0x4321
611 * Little-endian byte order functions - 'v' for 'VAX', or 'reVerse'.
614 #if BYTEORDER != 0x1234
619 # if BYTEORDER == 0x4321
620 # define vtohl(x) ((((x)&0xFF)<<24) \
622 +(((x)&0x0000FF00)<<8) \
623 +(((x)&0x00FF0000)>>8) )
624 # define vtohs(x) ((((x)&0xFF)<<8) + (((x)>>8)&0xFF))
625 # define htovl(x) vtohl(x)
626 # define htovs(x) vtohs(x)
628 /* otherwise default to functions in util.c */
632 #define U_S(what) ((U16)(what))
633 #define U_I(what) ((unsigned int)(what))
634 #define U_L(what) ((U32)(what))
636 U32 cast_ulong P((double));
637 #define U_S(what) ((U16)cast_ulong(what))
638 #define U_I(what) ((unsigned int)cast_ulong(what))
639 #define U_L(what) (cast_ulong(what))
643 #define I_32(what) ((I32)(what))
645 I32 cast_i32 P((double));
646 #define I_32(what) (cast_i32(what))
660 #define TMPPATH "/tmp/perl-eXXXXXX"
662 #define TMPPATH "plXXXXXX"
666 UIDTYPE getuid P(());
667 UIDTYPE geteuid P(());
668 GIDTYPE getgid P(());
669 GIDTYPE getegid P(());
675 #define DEBUG(a) if (debug) a
676 #define DEBUG_p(a) if (debug & 1) a
677 #define DEBUG_s(a) if (debug & 2) a
678 #define DEBUG_l(a) if (debug & 4) a
679 #define DEBUG_t(a) if (debug & 8) a
680 #define DEBUG_o(a) if (debug & 16) a
681 #define DEBUG_c(a) if (debug & 32) a
682 #define DEBUG_P(a) if (debug & 64) a
683 #define DEBUG_m(a) if (debug & 128) a
684 #define DEBUG_f(a) if (debug & 256) a
685 #define DEBUG_r(a) if (debug & 512) a
686 #define DEBUG_x(a) if (debug & 1024) a
687 #define DEBUG_u(a) if (debug & 2048) a
688 #define DEBUG_L(a) if (debug & 4096) a
689 #define DEBUG_H(a) if (debug & 8192) a
690 #define DEBUG_X(a) if (debug & 16384) a
691 #define DEBUG_D(a) if (debug & 32768) a
712 #define YYMAXDEPTH 300
714 #define assert(what) DEB( { \
716 croak("Assertion failed: file \"%s\", line %d", \
717 __FILE__, __LINE__); \
722 I32 (*uf_val)P((I32, SV*));
723 I32 (*uf_set)P((I32, SV*));
727 /* Fix these up for __STDC__ */
728 char *mktemp P((char*));
729 double atof P((const char*));
732 /* All of these are in stdlib.h or time.h for ANSI C */
734 struct tm *gmtime(), *localtime();
735 char *strchr(), *strrchr();
736 char *strcpy(), *strcat();
737 #endif /* ! STANDARD_C */
746 double exp P((double));
747 double log P((double));
748 double sqrt P((double));
749 double modf P((double,int*));
750 double sin P((double));
751 double cos P((double));
752 double atan2 P((double,double));
753 double pow P((double,double));
760 char *crypt P((const char*, const char*));
761 char *getenv P((const char*));
762 long lseek P((int,int,int));
763 char *getlogin P((void));
767 int unlnk P((char*));
769 #define UNLINK unlink
774 #define setreuid(r,e) setresuid(r,e,-1)
780 #define setregid(r,e) setresgid(r,e,-1)
790 #define PAD_SV(po) pad_sv(po)
792 #define PAD_SV(po) curpad[po]
800 EXT PerlInterpreter *curinterp; /* currently running interpreter */
801 extern char ** environ; /* environment variables supplied via exec */
802 EXT int uid; /* current real user id */
803 EXT int euid; /* current effective user id */
804 EXT int gid; /* current real group id */
805 EXT int egid; /* current effective group id */
806 EXT bool nomemok; /* let malloc context handle nomem */
807 EXT U32 an; /* malloc sequence number */
808 EXT U32 cop_seqmax; /* statement sequence number */
809 EXT U32 op_seqmax; /* op sequence number */
810 EXT U32 evalseq; /* eval sequence number */
811 EXT U32 sub_generation; /* inc to force methods to be looked up again */
812 EXT char ** origenviron;
815 EXT I32 * xiv_root; /* free xiv list--shared by interpreters */
816 EXT double * xnv_root; /* free xnv list--shared by interpreters */
817 EXT XRV * xrv_root; /* free xrv list--shared by interpreters */
818 EXT XPV * xpv_root; /* free xpv list--shared by interpreters */
820 /* Stack for currently executing thread--context switch must handle this. */
821 EXT SV ** stack_base; /* stack->array_ary */
822 EXT SV ** stack_sp; /* stack pointer now */
823 EXT SV ** stack_max; /* stack->array_ary + stack->array_max */
825 /* likewise for these */
827 EXT OP * op; /* current op--oughta be in a global register */
829 EXT I32 * scopestack; /* blocks we've entered */
830 EXT I32 scopestack_ix;
831 EXT I32 scopestack_max;
833 EXT ANY* savestack; /* to save non-local values on */
834 EXT I32 savestack_ix;
835 EXT I32 savestack_max;
837 EXT OP ** retstack; /* returns we've pushed */
839 EXT I32 retstack_max;
841 EXT I32 * markstack; /* stackmarks we're remembering */
842 EXT I32 * markstack_ptr; /* stackmarks we're remembering */
843 EXT I32 * markstack_max; /* stackmarks we're remembering */
851 EXT char tokenbuf[256];
852 EXT struct stat statbuf;
854 EXT struct tms timesbuf;
856 EXT STRLEN na; /* for use in SvPV when length is Not Applicable */
858 /* for tmp use in stupid debuggers */
863 /* handy constants */
864 EXT char * Yes INIT("1");
865 EXT char * No INIT("");
866 EXT char * hexdigit INIT("0123456789abcdef0123456789ABCDEFx");
867 EXT char * patleave INIT("\\.^$@dDwWsSbB+*?|()-nrtfeaxc0123456789[{]}");
868 EXT char * vert INIT("|");
870 EXT char warn_uninit[]
871 INIT("Use of uninitialized variable");
872 EXT char warn_nosemi[]
873 INIT("Semicolon seems to be missing");
874 EXT char warn_reserved[]
875 INIT("Unquoted string \"%s\" may clash with future reserved word");
877 INIT("Unsuccessful %s on filename containing newline");
879 INIT("Can't use an undefined value as %s reference");
881 INIT("Modification of non-creatable array value attempted, subscript %d");
883 INIT("Modification of non-creatable hash value attempted, subscript \"%s\"");
885 INIT("Modification of a read-only value attempted");
887 INIT("Out of memory!\n");
888 EXT char no_security[]
889 INIT("Insecure dependency in %s%s");
890 EXT char no_sock_func[]
891 INIT("Unsupported socket function \"%s\" called");
892 EXT char no_dir_func[]
893 INIT("Unsupported directory function \"%s\" called");
895 INIT("The %s function is unimplemented");
901 EXT char * cshname INIT(CSH);
906 EXT char *sig_name[] = {
910 EXT char *sig_name[];
914 EXT unsigned char fold[] = { /* fast case folding table */
915 0, 1, 2, 3, 4, 5, 6, 7,
916 8, 9, 10, 11, 12, 13, 14, 15,
917 16, 17, 18, 19, 20, 21, 22, 23,
918 24, 25, 26, 27, 28, 29, 30, 31,
919 32, 33, 34, 35, 36, 37, 38, 39,
920 40, 41, 42, 43, 44, 45, 46, 47,
921 48, 49, 50, 51, 52, 53, 54, 55,
922 56, 57, 58, 59, 60, 61, 62, 63,
923 64, 'a', 'b', 'c', 'd', 'e', 'f', 'g',
924 'h', 'i', 'j', 'k', 'l', 'm', 'n', 'o',
925 'p', 'q', 'r', 's', 't', 'u', 'v', 'w',
926 'x', 'y', 'z', 91, 92, 93, 94, 95,
927 96, 'A', 'B', 'C', 'D', 'E', 'F', 'G',
928 'H', 'I', 'J', 'K', 'L', 'M', 'N', 'O',
929 'P', 'Q', 'R', 'S', 'T', 'U', 'V', 'W',
930 'X', 'Y', 'Z', 123, 124, 125, 126, 127,
931 128, 129, 130, 131, 132, 133, 134, 135,
932 136, 137, 138, 139, 140, 141, 142, 143,
933 144, 145, 146, 147, 148, 149, 150, 151,
934 152, 153, 154, 155, 156, 157, 158, 159,
935 160, 161, 162, 163, 164, 165, 166, 167,
936 168, 169, 170, 171, 172, 173, 174, 175,
937 176, 177, 178, 179, 180, 181, 182, 183,
938 184, 185, 186, 187, 188, 189, 190, 191,
939 192, 193, 194, 195, 196, 197, 198, 199,
940 200, 201, 202, 203, 204, 205, 206, 207,
941 208, 209, 210, 211, 212, 213, 214, 215,
942 216, 217, 218, 219, 220, 221, 222, 223,
943 224, 225, 226, 227, 228, 229, 230, 231,
944 232, 233, 234, 235, 236, 237, 238, 239,
945 240, 241, 242, 243, 244, 245, 246, 247,
946 248, 249, 250, 251, 252, 253, 254, 255
949 EXT unsigned char fold[];
953 EXT unsigned char freq[] = { /* letter frequencies for mixed English/C */
954 1, 2, 84, 151, 154, 155, 156, 157,
955 165, 246, 250, 3, 158, 7, 18, 29,
956 40, 51, 62, 73, 85, 96, 107, 118,
957 129, 140, 147, 148, 149, 150, 152, 153,
958 255, 182, 224, 205, 174, 176, 180, 217,
959 233, 232, 236, 187, 235, 228, 234, 226,
960 222, 219, 211, 195, 188, 193, 185, 184,
961 191, 183, 201, 229, 181, 220, 194, 162,
962 163, 208, 186, 202, 200, 218, 198, 179,
963 178, 214, 166, 170, 207, 199, 209, 206,
964 204, 160, 212, 216, 215, 192, 175, 173,
965 243, 172, 161, 190, 203, 189, 164, 230,
966 167, 248, 227, 244, 242, 255, 241, 231,
967 240, 253, 169, 210, 245, 237, 249, 247,
968 239, 168, 252, 251, 254, 238, 223, 221,
969 213, 225, 177, 197, 171, 196, 159, 4,
970 5, 6, 8, 9, 10, 11, 12, 13,
971 14, 15, 16, 17, 19, 20, 21, 22,
972 23, 24, 25, 26, 27, 28, 30, 31,
973 32, 33, 34, 35, 36, 37, 38, 39,
974 41, 42, 43, 44, 45, 46, 47, 48,
975 49, 50, 52, 53, 54, 55, 56, 57,
976 58, 59, 60, 61, 63, 64, 65, 66,
977 67, 68, 69, 70, 71, 72, 74, 75,
978 76, 77, 78, 79, 80, 81, 82, 83,
979 86, 87, 88, 89, 90, 91, 92, 93,
980 94, 95, 97, 98, 99, 100, 101, 102,
981 103, 104, 105, 106, 108, 109, 110, 111,
982 112, 113, 114, 115, 116, 117, 119, 120,
983 121, 122, 123, 124, 125, 126, 127, 128,
984 130, 131, 132, 133, 134, 135, 136, 137,
985 138, 139, 141, 142, 143, 144, 145, 146
988 EXT unsigned char freq[];
993 EXT char* block_type[] = {
1002 EXT char* block_type[];
1006 /*****************************************************************************/
1007 /* This lexer/parser stuff is currently global since yacc is hard to reenter */
1008 /*****************************************************************************/
1009 /* XXX This needs to be revisited, since BEGIN makes yacc re-enter... */
1019 EXT FILE * VOL rsfp INIT(Nullfp);
1022 EXT char * oldbufptr;
1023 EXT char * oldoldbufptr;
1025 EXT expectation expect INIT(XSTATE); /* how to interpret ambiguous tokens */
1027 EXT I32 multi_start; /* 1st line of multi-line string */
1028 EXT I32 multi_end; /* last line of multi-line string */
1029 EXT I32 multi_open; /* delimiter of said string */
1030 EXT I32 multi_close; /* delimiter of said string */
1033 EXT I32 error_count; /* how many errors so far, max 10 */
1034 EXT I32 subline; /* line this subroutine began on */
1035 EXT SV * subname; /* name of current subroutine */
1037 EXT AV * comppad; /* storage for lexically scoped temporaries */
1038 EXT AV * comppad_name; /* variable names for "my" variables */
1039 EXT I32 comppad_name_fill;/* last "introduced" variable offset */
1040 EXT I32 min_intro_pending;/* start of vars to introduce */
1041 EXT I32 max_intro_pending;/* end of vars to introduce */
1042 EXT I32 padix; /* max used index in current "register" pad */
1045 EXT SV * evstr; /* op_fold_const() temp string cache */
1046 EXT I32 thisexpr; /* name id for nothing_in_common() */
1047 EXT char * last_uni; /* position of last named-unary operator */
1048 EXT char * last_lop; /* position of last list operator */
1049 EXT OPCODE last_lop_op; /* last list operator */
1050 EXT bool in_format; /* we're compiling a run_format */
1051 EXT bool in_my; /* we're compiling a "my" declaration */
1052 EXT I32 needblockscope INIT(TRUE); /* block overhead needed? */
1054 EXT I32 cryptseen; /* has fast crypt() been initialized? */
1057 /**************************************************************************/
1058 /* This regexp stuff is global since it always happens within 1 expr eval */
1059 /**************************************************************************/
1061 EXT char * regprecomp; /* uncompiled string. */
1062 EXT char * regparse; /* Input-scan pointer. */
1063 EXT char * regxend; /* End of input for compile */
1064 EXT I32 regnpar; /* () count. */
1065 EXT char * regcode; /* Code-emit pointer; ®dummy = don't. */
1066 EXT I32 regsize; /* Code size. */
1067 EXT I32 regfold; /* are we folding? */
1068 EXT I32 regsawbracket; /* Did we do {d,d} trick? */
1069 EXT I32 regsawback; /* Did we see \1, ...? */
1071 EXT char * reginput; /* String-input pointer. */
1072 EXT char regprev; /* char before regbol, \n if none */
1073 EXT char * regbol; /* Beginning of input, for ^ check. */
1074 EXT char * regeol; /* End of input, for $ check. */
1075 EXT char ** regstartp; /* Pointer to startp array. */
1076 EXT char ** regendp; /* Ditto for endp. */
1077 EXT char * reglastparen; /* Similarly for lastparen. */
1078 EXT char * regtill; /* How far we are required to go. */
1079 EXT I32 regmyp_size;
1080 EXT char ** regmystartp;
1081 EXT char ** regmyendp;
1083 /***********************************************/
1084 /* Global only to current interpreter instance */
1085 /***********************************************/
1090 struct interpreter {
1093 #define IINIT(x) INIT(x)
1096 /* pseudo environmental stuff */
1098 IEXT char ** Iorigargv;
1102 IEXT char * Iorigfilename;
1107 IEXT char Ipatchlevel[6];
1108 IEXT char * Inrs IINIT("\n");
1109 IEXT U32 Inrschar IINIT('\n'); /* final char of rs, or 0777 if none */
1110 IEXT I32 Inrslen IINIT(1);
1111 IEXT bool Ipreprocess;
1116 IEXT bool Idoswitches;
1118 IEXT bool Idoextract;
1119 IEXT bool Isawampersand; /* must save all match strings */
1120 IEXT bool Isawstudy; /* do fbm_instr on all strings */
1121 IEXT bool Isawi; /* study must assume case insensitive */
1124 IEXT bool Ido_undump; /* -u or dump seen? */
1125 IEXT char * Iinplace;
1126 IEXT char * Ie_tmpname;
1128 IEXT VOL U32 Idebug;
1131 /* magical thingies */
1132 IEXT time_t Ibasetime; /* $^T */
1133 IEXT I32 Iarybase; /* $[ */
1134 IEXT SV * Iformfeed; /* $^L */
1135 IEXT char * Ichopset IINIT(" \n-"); /* $: */
1136 IEXT char * Irs IINIT("\n"); /* $/ */
1137 IEXT U32 Irschar IINIT('\n'); /* final char of rs, or 0777 if none */
1138 IEXT STRLEN Irslen IINIT(1);
1140 IEXT char * Iofs; /* $, */
1141 IEXT STRLEN Iofslen;
1142 IEXT char * Iors; /* $\ */
1143 IEXT STRLEN Iorslen;
1144 IEXT char * Iofmt; /* $# */
1145 IEXT I32 Imaxsysfd IINIT(MAXSYSFD); /* top fd to pass to subprocesses */
1146 IEXT int Imultiline; /* $*--do strings hold >1 line? */
1147 IEXT U16 Istatusvalue; /* $? */
1149 IEXT struct stat Istatcache; /* _ */
1151 IEXT SV * Istatname IINIT(Nullsv);
1153 /* shortcuts to various I/O objects */
1155 IEXT GV * Ilast_in_gv;
1158 IEXT GV * Idefoutgv;
1159 IEXT GV * Icuroutgv;
1160 IEXT GV * Iargvoutgv;
1162 /* shortcuts to regexp stuff */
1166 IEXT PMOP * Icurpm; /* what to do \ interps from */
1167 IEXT I32 * Iscreamfirst;
1168 IEXT I32 * Iscreamnext;
1169 IEXT I32 Imaxscream IINIT(-1);
1170 IEXT SV * Ilastscream;
1172 /* shortcuts to debugging objects */
1176 IEXT SV * IDBsingle;
1178 IEXT SV * IDBsignal;
1179 IEXT AV * Ilineary; /* lines of script for debugger */
1180 IEXT AV * Idbargs; /* args to call listed by caller function */
1183 IEXT HV * Idefstash; /* main symbol table */
1184 IEXT HV * Icurstash; /* symbol table for current package */
1185 IEXT HV * Idebstash; /* symbol table for perldb package */
1186 IEXT SV * Icurstname; /* name of current package */
1187 IEXT AV * Ibeginav; /* names of BEGIN subroutines */
1188 IEXT AV * Iendav; /* names of END subroutines */
1189 IEXT AV * Ipad; /* storage for lexically scoped temporaries */
1190 IEXT AV * Ipadname; /* variable names for "my" variables */
1192 /* memory management */
1193 IEXT SV ** Itmps_stack;
1194 IEXT I32 Itmps_ix IINIT(-1);
1195 IEXT I32 Itmps_floor IINIT(-1);
1197 IEXT I32 Isv_count; /* how many SV* are currently allocated */
1198 IEXT I32 Isv_rvcount; /* how many RV* are currently allocated */
1199 IEXT SV* Isv_root; /* storage for SVs belonging to interp */
1200 IEXT SV* Isv_arenaroot; /* list of areas for garbage collection */
1202 /* funky return mechanisms */
1203 IEXT I32 Ilastspbase;
1205 IEXT int Iforkprocess; /* so do_open |- can return proc# */
1207 /* subprocess state */
1208 IEXT AV * Ifdpid; /* keep fd-to-pid mappings for my_popen */
1209 IEXT HV * Ipidstatus; /* keep pid-to-status mappings for waitpid */
1211 /* internal state */
1212 IEXT VOL int Iin_eval; /* trap "fatal" errors? */
1213 IEXT OP * Irestartop; /* Are we propagating an error from croak? */
1214 IEXT int Idelaymagic; /* ($<,$>) = ... */
1215 IEXT bool Idirty; /* clean before rerunning */
1216 IEXT bool Ilocalizing; /* are we processing a local() list? */
1217 IEXT bool Itainted; /* using variables controlled by $< */
1218 IEXT bool Itainting; /* doing taint checks */
1222 IEXT I32 Idlmax IINIT(128);
1223 IEXT char * Idebname;
1224 IEXT char * Idebdelim;
1226 /* current interpreter roots */
1227 IEXT OP * Imain_root;
1228 IEXT OP * Imain_start;
1229 IEXT OP * Ieval_root;
1230 IEXT OP * Ieval_start;
1232 /* runtime control stuff */
1233 IEXT COP * VOL Icurcop IINIT(&compiling);
1234 IEXT line_t Icopline IINIT(NOLINE);
1235 IEXT CONTEXT * Icxstack;
1236 IEXT I32 Icxstack_ix IINIT(-1);
1237 IEXT I32 Icxstack_max IINIT(128);
1238 IEXT jmp_buf Itop_env;
1241 IEXT AV * Istack; /* THE STACK */
1242 IEXT AV * Imainstack; /* the stack when nothing funny is happening */
1243 IEXT SV ** Imystack_base; /* stack->array_ary */
1244 IEXT SV ** Imystack_sp; /* stack pointer now */
1245 IEXT SV ** Imystack_max; /* stack->array_ary + stack->array_max */
1247 /* format accumulators */
1248 IEXT SV * Iformtarget;
1249 IEXT SV * Ibodytarget;
1250 IEXT SV * Itoptarget;
1252 /* statics moved here for shared library purposes */
1253 IEXT SV Istrchop; /* return value from chop */
1254 IEXT int Ifilemode; /* so nextargv() can preserve mode */
1255 IEXT int Ilastfd; /* what to preserve mode on */
1256 IEXT char * Ioldname; /* what to preserve mode on */
1257 IEXT char ** IArgv; /* stuff to free from do_aexec, vfork safe */
1258 IEXT char * ICmd; /* stuff to free from do_aexec, vfork safe */
1259 IEXT OP * Isortcop; /* user defined sort routine */
1260 IEXT HV * Isortstash; /* which is in some package or other */
1261 IEXT GV * Ifirstgv; /* $a */
1262 IEXT GV * Isecondgv; /* $b */
1263 IEXT AV * Isortstack; /* temp stack during pp_sort() */
1264 IEXT AV * Isignalstack; /* temp stack during sighandler() */
1265 IEXT SV * Imystrk; /* temp key string for do_each() */
1266 IEXT I32 Idumplvl; /* indentation level on syntax tree dump */
1267 IEXT PMOP * Ioldlastpm; /* for saving regexp context during debugger */
1268 IEXT I32 Igensym; /* next symbol for getsym() to define */
1269 IEXT bool Ipreambled;
1270 IEXT int Ilaststatval IINIT(-1);
1271 IEXT I32 Ilaststype IINIT(OP_STAT);
1279 struct interpreter {
1296 /* The following must follow proto.h */
1299 MGVTBL vtbl_sv = {magic_get,
1303 MGVTBL vtbl_env = {0, 0, 0, 0, 0};
1304 MGVTBL vtbl_envelem = {0, magic_setenv,
1306 MGVTBL vtbl_sig = {0, 0, 0, 0, 0};
1307 MGVTBL vtbl_sigelem = {0, magic_setsig,
1309 MGVTBL vtbl_pack = {0, 0,
1311 MGVTBL vtbl_packelem = {magic_getpack,
1315 MGVTBL vtbl_dbline = {0, magic_setdbline,
1317 MGVTBL vtbl_isa = {0, magic_setisa,
1319 MGVTBL vtbl_isaelem = {0, magic_setisa,
1321 MGVTBL vtbl_arylen = {magic_getarylen,
1324 MGVTBL vtbl_glob = {magic_getglob,
1327 MGVTBL vtbl_mglob = {0, magic_setmglob,
1329 MGVTBL vtbl_taint = {magic_gettaint,magic_settaint,
1331 MGVTBL vtbl_substr = {0, magic_setsubstr,
1333 MGVTBL vtbl_vec = {0, magic_setvec,
1335 MGVTBL vtbl_bm = {0, magic_setbm,
1337 MGVTBL vtbl_uvar = {magic_getuvar,
1342 EXT MGVTBL vtbl_env;
1343 EXT MGVTBL vtbl_envelem;
1344 EXT MGVTBL vtbl_sig;
1345 EXT MGVTBL vtbl_sigelem;
1346 EXT MGVTBL vtbl_pack;
1347 EXT MGVTBL vtbl_packelem;
1348 EXT MGVTBL vtbl_dbline;
1349 EXT MGVTBL vtbl_isa;
1350 EXT MGVTBL vtbl_isaelem;
1351 EXT MGVTBL vtbl_arylen;
1352 EXT MGVTBL vtbl_glob;
1353 EXT MGVTBL vtbl_mglob;
1354 EXT MGVTBL vtbl_taint;
1355 EXT MGVTBL vtbl_substr;
1356 EXT MGVTBL vtbl_vec;
1358 EXT MGVTBL vtbl_uvar;