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(HAS_SAFE_BCOPY)
213 # define memmove(d,s,l) bcopy(s,d,l)
215 # if defined(HAS_MEMCPY) && defined(HAS_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 */
288 char *strerror P((int));
290 # define Strerror strerror
293 # ifdef HAS_SYS_ERRLIST
295 extern char *sys_errlist[];
297 # define Strerror(e) \
298 ((e) < 0 || (e) >= sys_nerr ? "(unknown)" : sys_errlist[e])
305 # include <sys/ioctl.h>
309 #if defined(mc300) || defined(mc500) || defined(mc700) || defined(mc6000)
310 # ifdef HAS_SOCKETPAIR
311 # undef HAS_SOCKETPAIR
326 #if defined(I_DIRENT)
328 # define DIRENT dirent
331 # include <sys/ndir.h>
332 # define DIRENT direct
336 # include <ndir.h> /* may be wrong in the future */
338 # include <sys/dir.h>
340 # define DIRENT direct
346 /* work around botch in SunOS 4.0.1 and 4.0.2 */
348 # define fputs(sv,fp) fprintf(fp,"%s",sv)
353 * The following gobbledygook brought to you on behalf of __STDC__.
354 * (I could just use #ifndef __STDC__, but this is more bulletproof
355 * in the face of half-implementations.)
360 # define S_IFMT _S_IFMT
362 # define S_IFMT 0170000
367 # define S_ISDIR(m) ((m & S_IFMT) == S_IFDIR)
371 # define S_ISCHR(m) ((m & S_IFMT) == S_IFCHR)
376 # define S_ISBLK(m) ((m & S_IFMT) == S_IFBLK)
378 # define S_ISBLK(m) (0)
383 # define S_ISREG(m) ((m & S_IFMT) == S_IFREG)
388 # define S_ISFIFO(m) ((m & S_IFMT) == S_IFIFO)
390 # define S_ISFIFO(m) (0)
396 # define S_ISLNK(m) _S_ISLNK(m)
399 # define S_ISLNK(m) ((m & S_IFMT) == _S_IFLNK)
402 # define S_ISLNK(m) ((m & S_IFMT) == S_IFLNK)
404 # define S_ISLNK(m) (0)
412 # define S_ISSOCK(m) _S_ISSOCK(m)
415 # define S_ISSOCK(m) ((m & S_IFMT) == _S_IFSOCK)
418 # define S_ISSOCK(m) ((m & S_IFMT) == S_IFSOCK)
420 # define S_ISSOCK(m) (0)
428 # define S_IRUSR S_IREAD
429 # define S_IWUSR S_IWRITE
430 # define S_IXUSR S_IEXEC
432 # define S_IRUSR 0400
433 # define S_IWUSR 0200
434 # define S_IXUSR 0100
436 # define S_IRGRP (S_IRUSR>>3)
437 # define S_IWGRP (S_IWUSR>>3)
438 # define S_IXGRP (S_IXUSR>>3)
439 # define S_IROTH (S_IRUSR>>6)
440 # define S_IWOTH (S_IWUSR>>6)
441 # define S_IXOTH (S_IXUSR>>6)
445 # define S_ISUID 04000
449 # define S_ISGID 02000
456 #if defined(cray) || defined(gould) || defined(i860)
457 # define SLOPPYDIVIDE
460 #if defined(cray) || defined(convex) || defined (uts) || BYTEORDER > 0xffff
468 # if defined(convex) || defined (uts)
469 # define quad long long
477 # define VOIDRET void
485 # include "unixish.h"
489 #define pause() sleep((32767<<16)+32767)
494 /* on BSDish systes we're safe */
495 # define IOCPARM_LEN(x) (((x) >> 16) & IOCPARM_MASK)
497 /* otherwise guess at what's safe */
498 # define IOCPARM_LEN(x) 256
502 typedef MEM_SIZE STRLEN;
504 typedef struct op OP;
505 typedef struct cop COP;
506 typedef struct unop UNOP;
507 typedef struct binop BINOP;
508 typedef struct listop LISTOP;
509 typedef struct logop LOGOP;
510 typedef struct condop CONDOP;
511 typedef struct pmop PMOP;
512 typedef struct svop SVOP;
513 typedef struct gvop GVOP;
514 typedef struct pvop PVOP;
515 typedef struct cvop CVOP;
516 typedef struct loop LOOP;
518 typedef struct Outrec Outrec;
519 typedef struct lstring Lstring;
520 typedef struct interpreter PerlInterpreter;
521 typedef struct ff FF;
522 typedef struct sv SV;
523 typedef struct av AV;
524 typedef struct hv HV;
525 typedef struct cv CV;
526 typedef struct regexp REGEXP;
527 typedef struct gp GP;
528 typedef struct sv GV;
529 typedef struct io IO;
530 typedef struct context CONTEXT;
531 typedef struct block BLOCK;
533 typedef struct magic MAGIC;
534 typedef struct xrv XRV;
535 typedef struct xpv XPV;
536 typedef struct xpviv XPVIV;
537 typedef struct xpvnv XPVNV;
538 typedef struct xpvmg XPVMG;
539 typedef struct xpvlv XPVLV;
540 typedef struct xpvav XPVAV;
541 typedef struct xpvhv XPVHV;
542 typedef struct xpvgv XPVGV;
543 typedef struct xpvcv XPVCV;
544 typedef struct xpvbm XPVBM;
545 typedef struct xpvfm XPVFM;
546 typedef struct xpvio XPVIO;
547 typedef struct mgvtbl MGVTBL;
548 typedef union any ANY;
570 #if defined(iAPX286) || defined(M_I286) || defined(I80286)
576 char *sprintf P((char *, ...));
578 int sprintf P((char *, ...));
582 #if defined(htonl) && !defined(HAS_HTONL)
585 #if defined(htons) && !defined(HAS_HTONS)
588 #if defined(ntohl) && !defined(HAS_NTOHL)
591 #if defined(ntohs) && !defined(HAS_NTOHS)
595 #if (BYTEORDER & 0xffff) != 0x4321
601 #define htons my_swap
602 #define htonl my_htonl
603 #define ntohs my_swap
604 #define ntohl my_ntohl
607 #if (BYTEORDER & 0xffff) == 0x4321
616 * Little-endian byte order functions - 'v' for 'VAX', or 'reVerse'.
619 #if BYTEORDER != 0x1234
624 # if BYTEORDER == 0x4321
625 # define vtohl(x) ((((x)&0xFF)<<24) \
627 +(((x)&0x0000FF00)<<8) \
628 +(((x)&0x00FF0000)>>8) )
629 # define vtohs(x) ((((x)&0xFF)<<8) + (((x)>>8)&0xFF))
630 # define htovl(x) vtohl(x)
631 # define htovs(x) vtohs(x)
633 /* otherwise default to functions in util.c */
637 #define U_S(what) ((U16)(what))
638 #define U_I(what) ((unsigned int)(what))
639 #define U_L(what) ((U32)(what))
641 U32 cast_ulong P((double));
642 #define U_S(what) ((U16)cast_ulong(what))
643 #define U_I(what) ((unsigned int)cast_ulong(what))
644 #define U_L(what) (cast_ulong(what))
648 #define I_32(what) ((I32)(what))
650 I32 cast_i32 P((double));
651 #define I_32(what) (cast_i32(what))
665 #define TMPPATH "/tmp/perl-eXXXXXX"
667 #define TMPPATH "plXXXXXX"
671 UIDTYPE getuid P(());
672 UIDTYPE geteuid P(());
673 GIDTYPE getgid P(());
674 GIDTYPE getegid P(());
680 #define DEBUG(a) if (debug) a
681 #define DEBUG_p(a) if (debug & 1) a
682 #define DEBUG_s(a) if (debug & 2) a
683 #define DEBUG_l(a) if (debug & 4) a
684 #define DEBUG_t(a) if (debug & 8) a
685 #define DEBUG_o(a) if (debug & 16) a
686 #define DEBUG_c(a) if (debug & 32) a
687 #define DEBUG_P(a) if (debug & 64) a
688 #define DEBUG_m(a) if (debug & 128) a
689 #define DEBUG_f(a) if (debug & 256) a
690 #define DEBUG_r(a) if (debug & 512) a
691 #define DEBUG_x(a) if (debug & 1024) a
692 #define DEBUG_u(a) if (debug & 2048) a
693 #define DEBUG_L(a) if (debug & 4096) a
694 #define DEBUG_H(a) if (debug & 8192) a
695 #define DEBUG_X(a) if (debug & 16384) a
696 #define DEBUG_D(a) if (debug & 32768) a
717 #define YYMAXDEPTH 300
719 #define assert(what) DEB( { \
721 croak("Assertion failed: file \"%s\", line %d", \
722 __FILE__, __LINE__); \
727 I32 (*uf_val)P((I32, SV*));
728 I32 (*uf_set)P((I32, SV*));
732 /* Fix these up for __STDC__ */
733 char *mktemp P((char*));
734 double atof P((const char*));
737 /* All of these are in stdlib.h or time.h for ANSI C */
739 struct tm *gmtime(), *localtime();
740 char *strchr(), *strrchr();
741 char *strcpy(), *strcat();
742 #endif /* ! STANDARD_C */
751 double exp P((double));
752 double log P((double));
753 double sqrt P((double));
754 double modf P((double,double*));
755 double sin P((double));
756 double cos P((double));
757 double atan2 P((double,double));
758 double pow P((double,double));
765 char *crypt P((const char*, const char*));
766 char *getenv P((const char*));
767 long lseek P((int,off_t,int));
768 char *getlogin P((void));
772 int unlnk P((char*));
774 #define UNLINK unlink
779 #define setreuid(r,e) setresuid(r,e,-1)
785 #define setregid(r,e) setresgid(r,e,-1)
795 #define PAD_SV(po) pad_sv(po)
797 #define PAD_SV(po) curpad[po]
805 EXT PerlInterpreter *curinterp; /* currently running interpreter */
806 extern char ** environ; /* environment variables supplied via exec */
807 EXT int uid; /* current real user id */
808 EXT int euid; /* current effective user id */
809 EXT int gid; /* current real group id */
810 EXT int egid; /* current effective group id */
811 EXT bool nomemok; /* let malloc context handle nomem */
812 EXT U32 an; /* malloc sequence number */
813 EXT U32 cop_seqmax; /* statement sequence number */
814 EXT U32 op_seqmax; /* op sequence number */
815 EXT U32 evalseq; /* eval sequence number */
816 EXT U32 sub_generation; /* inc to force methods to be looked up again */
817 EXT char ** origenviron;
820 EXT I32 * xiv_root; /* free xiv list--shared by interpreters */
821 EXT double * xnv_root; /* free xnv list--shared by interpreters */
822 EXT XRV * xrv_root; /* free xrv list--shared by interpreters */
823 EXT XPV * xpv_root; /* free xpv list--shared by interpreters */
825 /* Stack for currently executing thread--context switch must handle this. */
826 EXT SV ** stack_base; /* stack->array_ary */
827 EXT SV ** stack_sp; /* stack pointer now */
828 EXT SV ** stack_max; /* stack->array_ary + stack->array_max */
830 /* likewise for these */
832 EXT OP * op; /* current op--oughta be in a global register */
834 EXT I32 * scopestack; /* blocks we've entered */
835 EXT I32 scopestack_ix;
836 EXT I32 scopestack_max;
838 EXT ANY* savestack; /* to save non-local values on */
839 EXT I32 savestack_ix;
840 EXT I32 savestack_max;
842 EXT OP ** retstack; /* returns we've pushed */
844 EXT I32 retstack_max;
846 EXT I32 * markstack; /* stackmarks we're remembering */
847 EXT I32 * markstack_ptr; /* stackmarks we're remembering */
848 EXT I32 * markstack_max; /* stackmarks we're remembering */
856 EXT char tokenbuf[256];
857 EXT struct stat statbuf;
859 EXT struct tms timesbuf;
861 EXT STRLEN na; /* for use in SvPV when length is Not Applicable */
863 /* for tmp use in stupid debuggers */
868 /* handy constants */
869 EXT char * Yes INIT("1");
870 EXT char * No INIT("");
871 EXT char * hexdigit INIT("0123456789abcdef0123456789ABCDEFx");
872 EXT char * patleave INIT("\\.^$@dDwWsSbB+*?|()-nrtfeaxc0123456789[{]}");
873 EXT char * vert INIT("|");
875 EXT char warn_uninit[]
876 INIT("Use of uninitialized variable");
877 EXT char warn_nosemi[]
878 INIT("Semicolon seems to be missing");
879 EXT char warn_reserved[]
880 INIT("Unquoted string \"%s\" may clash with future reserved word");
882 INIT("Unsuccessful %s on filename containing newline");
884 INIT("Can't use an undefined value as %s reference");
886 INIT("Modification of non-creatable array value attempted, subscript %d");
888 INIT("Modification of non-creatable hash value attempted, subscript \"%s\"");
890 INIT("Modification of a read-only value attempted");
892 INIT("Out of memory!\n");
893 EXT char no_security[]
894 INIT("Insecure dependency in %s%s");
895 EXT char no_sock_func[]
896 INIT("Unsupported socket function \"%s\" called");
897 EXT char no_dir_func[]
898 INIT("Unsupported directory function \"%s\" called");
900 INIT("The %s function is unimplemented");
906 EXT char * cshname INIT(CSH);
911 EXT char *sig_name[] = {
915 EXT char *sig_name[];
919 EXT unsigned char fold[] = { /* fast case folding table */
920 0, 1, 2, 3, 4, 5, 6, 7,
921 8, 9, 10, 11, 12, 13, 14, 15,
922 16, 17, 18, 19, 20, 21, 22, 23,
923 24, 25, 26, 27, 28, 29, 30, 31,
924 32, 33, 34, 35, 36, 37, 38, 39,
925 40, 41, 42, 43, 44, 45, 46, 47,
926 48, 49, 50, 51, 52, 53, 54, 55,
927 56, 57, 58, 59, 60, 61, 62, 63,
928 64, 'a', 'b', 'c', 'd', 'e', 'f', 'g',
929 'h', 'i', 'j', 'k', 'l', 'm', 'n', 'o',
930 'p', 'q', 'r', 's', 't', 'u', 'v', 'w',
931 'x', 'y', 'z', 91, 92, 93, 94, 95,
932 96, 'A', 'B', 'C', 'D', 'E', 'F', 'G',
933 'H', 'I', 'J', 'K', 'L', 'M', 'N', 'O',
934 'P', 'Q', 'R', 'S', 'T', 'U', 'V', 'W',
935 'X', 'Y', 'Z', 123, 124, 125, 126, 127,
936 128, 129, 130, 131, 132, 133, 134, 135,
937 136, 137, 138, 139, 140, 141, 142, 143,
938 144, 145, 146, 147, 148, 149, 150, 151,
939 152, 153, 154, 155, 156, 157, 158, 159,
940 160, 161, 162, 163, 164, 165, 166, 167,
941 168, 169, 170, 171, 172, 173, 174, 175,
942 176, 177, 178, 179, 180, 181, 182, 183,
943 184, 185, 186, 187, 188, 189, 190, 191,
944 192, 193, 194, 195, 196, 197, 198, 199,
945 200, 201, 202, 203, 204, 205, 206, 207,
946 208, 209, 210, 211, 212, 213, 214, 215,
947 216, 217, 218, 219, 220, 221, 222, 223,
948 224, 225, 226, 227, 228, 229, 230, 231,
949 232, 233, 234, 235, 236, 237, 238, 239,
950 240, 241, 242, 243, 244, 245, 246, 247,
951 248, 249, 250, 251, 252, 253, 254, 255
954 EXT unsigned char fold[];
958 EXT unsigned char freq[] = { /* letter frequencies for mixed English/C */
959 1, 2, 84, 151, 154, 155, 156, 157,
960 165, 246, 250, 3, 158, 7, 18, 29,
961 40, 51, 62, 73, 85, 96, 107, 118,
962 129, 140, 147, 148, 149, 150, 152, 153,
963 255, 182, 224, 205, 174, 176, 180, 217,
964 233, 232, 236, 187, 235, 228, 234, 226,
965 222, 219, 211, 195, 188, 193, 185, 184,
966 191, 183, 201, 229, 181, 220, 194, 162,
967 163, 208, 186, 202, 200, 218, 198, 179,
968 178, 214, 166, 170, 207, 199, 209, 206,
969 204, 160, 212, 216, 215, 192, 175, 173,
970 243, 172, 161, 190, 203, 189, 164, 230,
971 167, 248, 227, 244, 242, 255, 241, 231,
972 240, 253, 169, 210, 245, 237, 249, 247,
973 239, 168, 252, 251, 254, 238, 223, 221,
974 213, 225, 177, 197, 171, 196, 159, 4,
975 5, 6, 8, 9, 10, 11, 12, 13,
976 14, 15, 16, 17, 19, 20, 21, 22,
977 23, 24, 25, 26, 27, 28, 30, 31,
978 32, 33, 34, 35, 36, 37, 38, 39,
979 41, 42, 43, 44, 45, 46, 47, 48,
980 49, 50, 52, 53, 54, 55, 56, 57,
981 58, 59, 60, 61, 63, 64, 65, 66,
982 67, 68, 69, 70, 71, 72, 74, 75,
983 76, 77, 78, 79, 80, 81, 82, 83,
984 86, 87, 88, 89, 90, 91, 92, 93,
985 94, 95, 97, 98, 99, 100, 101, 102,
986 103, 104, 105, 106, 108, 109, 110, 111,
987 112, 113, 114, 115, 116, 117, 119, 120,
988 121, 122, 123, 124, 125, 126, 127, 128,
989 130, 131, 132, 133, 134, 135, 136, 137,
990 138, 139, 141, 142, 143, 144, 145, 146
993 EXT unsigned char freq[];
998 EXT char* block_type[] = {
1007 EXT char* block_type[];
1011 /*****************************************************************************/
1012 /* This lexer/parser stuff is currently global since yacc is hard to reenter */
1013 /*****************************************************************************/
1014 /* XXX This needs to be revisited, since BEGIN makes yacc re-enter... */
1024 EXT FILE * VOL rsfp INIT(Nullfp);
1027 EXT char * oldbufptr;
1028 EXT char * oldoldbufptr;
1030 EXT expectation expect INIT(XSTATE); /* how to interpret ambiguous tokens */
1032 EXT I32 multi_start; /* 1st line of multi-line string */
1033 EXT I32 multi_end; /* last line of multi-line string */
1034 EXT I32 multi_open; /* delimiter of said string */
1035 EXT I32 multi_close; /* delimiter of said string */
1038 EXT I32 error_count; /* how many errors so far, max 10 */
1039 EXT I32 subline; /* line this subroutine began on */
1040 EXT SV * subname; /* name of current subroutine */
1042 EXT AV * comppad; /* storage for lexically scoped temporaries */
1043 EXT AV * comppad_name; /* variable names for "my" variables */
1044 EXT I32 comppad_name_fill;/* last "introduced" variable offset */
1045 EXT I32 min_intro_pending;/* start of vars to introduce */
1046 EXT I32 max_intro_pending;/* end of vars to introduce */
1047 EXT I32 padix; /* max used index in current "register" pad */
1050 EXT SV * evstr; /* op_fold_const() temp string cache */
1051 EXT I32 thisexpr; /* name id for nothing_in_common() */
1052 EXT char * last_uni; /* position of last named-unary operator */
1053 EXT char * last_lop; /* position of last list operator */
1054 EXT OPCODE last_lop_op; /* last list operator */
1055 EXT bool in_format; /* we're compiling a run_format */
1056 EXT bool in_my; /* we're compiling a "my" declaration */
1057 EXT I32 needblockscope INIT(TRUE); /* block overhead needed? */
1059 EXT I32 cryptseen; /* has fast crypt() been initialized? */
1062 /**************************************************************************/
1063 /* This regexp stuff is global since it always happens within 1 expr eval */
1064 /**************************************************************************/
1066 EXT char * regprecomp; /* uncompiled string. */
1067 EXT char * regparse; /* Input-scan pointer. */
1068 EXT char * regxend; /* End of input for compile */
1069 EXT I32 regnpar; /* () count. */
1070 EXT char * regcode; /* Code-emit pointer; ®dummy = don't. */
1071 EXT I32 regsize; /* Code size. */
1072 EXT I32 regfold; /* are we folding? */
1073 EXT I32 regsawbracket; /* Did we do {d,d} trick? */
1074 EXT I32 regsawback; /* Did we see \1, ...? */
1076 EXT char * reginput; /* String-input pointer. */
1077 EXT char regprev; /* char before regbol, \n if none */
1078 EXT char * regbol; /* Beginning of input, for ^ check. */
1079 EXT char * regeol; /* End of input, for $ check. */
1080 EXT char ** regstartp; /* Pointer to startp array. */
1081 EXT char ** regendp; /* Ditto for endp. */
1082 EXT char * reglastparen; /* Similarly for lastparen. */
1083 EXT char * regtill; /* How far we are required to go. */
1084 EXT I32 regmyp_size;
1085 EXT char ** regmystartp;
1086 EXT char ** regmyendp;
1088 /***********************************************/
1089 /* Global only to current interpreter instance */
1090 /***********************************************/
1095 struct interpreter {
1098 #define IINIT(x) INIT(x)
1101 /* pseudo environmental stuff */
1103 IEXT char ** Iorigargv;
1107 IEXT char * Iorigfilename;
1112 IEXT char Ipatchlevel[6];
1113 IEXT char * Inrs IINIT("\n");
1114 IEXT U32 Inrschar IINIT('\n'); /* final char of rs, or 0777 if none */
1115 IEXT I32 Inrslen IINIT(1);
1116 IEXT char * Isplitstr IINIT(" ");
1117 IEXT bool Ipreprocess;
1123 IEXT bool Idoswitches;
1125 IEXT bool Idoextract;
1126 IEXT bool Isawampersand; /* must save all match strings */
1127 IEXT bool Isawstudy; /* do fbm_instr on all strings */
1128 IEXT bool Isawi; /* study must assume case insensitive */
1131 IEXT bool Ido_undump; /* -u or dump seen? */
1132 IEXT char * Iinplace;
1133 IEXT char * Ie_tmpname;
1135 IEXT VOL U32 Idebug;
1138 /* magical thingies */
1139 IEXT time_t Ibasetime; /* $^T */
1140 IEXT I32 Iarybase; /* $[ */
1141 IEXT SV * Iformfeed; /* $^L */
1142 IEXT char * Ichopset IINIT(" \n-"); /* $: */
1143 IEXT char * Irs IINIT("\n"); /* $/ */
1144 IEXT U32 Irschar IINIT('\n'); /* final char of rs, or 0777 if none */
1145 IEXT STRLEN Irslen IINIT(1);
1147 IEXT char * Iofs; /* $, */
1148 IEXT STRLEN Iofslen;
1149 IEXT char * Iors; /* $\ */
1150 IEXT STRLEN Iorslen;
1151 IEXT char * Iofmt; /* $# */
1152 IEXT I32 Imaxsysfd IINIT(MAXSYSFD); /* top fd to pass to subprocesses */
1153 IEXT int Imultiline; /* $*--do strings hold >1 line? */
1154 IEXT U16 Istatusvalue; /* $? */
1156 IEXT struct stat Istatcache; /* _ */
1158 IEXT SV * Istatname IINIT(Nullsv);
1160 /* shortcuts to various I/O objects */
1162 IEXT GV * Ilast_in_gv;
1165 IEXT GV * Idefoutgv;
1166 IEXT GV * Icuroutgv;
1167 IEXT GV * Iargvoutgv;
1169 /* shortcuts to regexp stuff */
1173 IEXT PMOP * Icurpm; /* what to do \ interps from */
1174 IEXT I32 * Iscreamfirst;
1175 IEXT I32 * Iscreamnext;
1176 IEXT I32 Imaxscream IINIT(-1);
1177 IEXT SV * Ilastscream;
1179 /* shortcuts to debugging objects */
1183 IEXT SV * IDBsingle;
1185 IEXT SV * IDBsignal;
1186 IEXT AV * Ilineary; /* lines of script for debugger */
1187 IEXT AV * Idbargs; /* args to call listed by caller function */
1190 IEXT HV * Idefstash; /* main symbol table */
1191 IEXT HV * Icurstash; /* symbol table for current package */
1192 IEXT HV * Idebstash; /* symbol table for perldb package */
1193 IEXT SV * Icurstname; /* name of current package */
1194 IEXT AV * Ibeginav; /* names of BEGIN subroutines */
1195 IEXT AV * Iendav; /* names of END subroutines */
1196 IEXT AV * Ipad; /* storage for lexically scoped temporaries */
1197 IEXT AV * Ipadname; /* variable names for "my" variables */
1199 /* memory management */
1200 IEXT SV ** Itmps_stack;
1201 IEXT I32 Itmps_ix IINIT(-1);
1202 IEXT I32 Itmps_floor IINIT(-1);
1204 IEXT I32 Isv_count; /* how many SV* are currently allocated */
1205 IEXT I32 Isv_rvcount; /* how many RV* are currently allocated */
1206 IEXT SV* Isv_root; /* storage for SVs belonging to interp */
1207 IEXT SV* Isv_arenaroot; /* list of areas for garbage collection */
1209 /* funky return mechanisms */
1210 IEXT I32 Ilastspbase;
1212 IEXT int Iforkprocess; /* so do_open |- can return proc# */
1214 /* subprocess state */
1215 IEXT AV * Ifdpid; /* keep fd-to-pid mappings for my_popen */
1216 IEXT HV * Ipidstatus; /* keep pid-to-status mappings for waitpid */
1218 /* internal state */
1219 IEXT VOL int Iin_eval; /* trap "fatal" errors? */
1220 IEXT OP * Irestartop; /* Are we propagating an error from croak? */
1221 IEXT int Idelaymagic; /* ($<,$>) = ... */
1222 IEXT bool Idirty; /* In the middle of tearing things down? */
1223 IEXT bool Ilocalizing; /* are we processing a local() list? */
1224 IEXT bool Itainted; /* using variables controlled by $< */
1225 IEXT bool Itainting; /* doing taint checks */
1229 IEXT I32 Idlmax IINIT(128);
1230 IEXT char * Idebname;
1231 IEXT char * Idebdelim;
1233 /* current interpreter roots */
1234 IEXT OP * Imain_root;
1235 IEXT OP * Imain_start;
1236 IEXT OP * Ieval_root;
1237 IEXT OP * Ieval_start;
1239 /* runtime control stuff */
1240 IEXT COP * VOL Icurcop IINIT(&compiling);
1241 IEXT line_t Icopline IINIT(NOLINE);
1242 IEXT CONTEXT * Icxstack;
1243 IEXT I32 Icxstack_ix IINIT(-1);
1244 IEXT I32 Icxstack_max IINIT(128);
1245 IEXT jmp_buf Itop_env;
1248 IEXT AV * Istack; /* THE STACK */
1249 IEXT AV * Imainstack; /* the stack when nothing funny is happening */
1250 IEXT SV ** Imystack_base; /* stack->array_ary */
1251 IEXT SV ** Imystack_sp; /* stack pointer now */
1252 IEXT SV ** Imystack_max; /* stack->array_ary + stack->array_max */
1254 /* format accumulators */
1255 IEXT SV * Iformtarget;
1256 IEXT SV * Ibodytarget;
1257 IEXT SV * Itoptarget;
1259 /* statics moved here for shared library purposes */
1260 IEXT SV Istrchop; /* return value from chop */
1261 IEXT int Ifilemode; /* so nextargv() can preserve mode */
1262 IEXT int Ilastfd; /* what to preserve mode on */
1263 IEXT char * Ioldname; /* what to preserve mode on */
1264 IEXT char ** IArgv; /* stuff to free from do_aexec, vfork safe */
1265 IEXT char * ICmd; /* stuff to free from do_aexec, vfork safe */
1266 IEXT OP * Isortcop; /* user defined sort routine */
1267 IEXT HV * Isortstash; /* which is in some package or other */
1268 IEXT GV * Ifirstgv; /* $a */
1269 IEXT GV * Isecondgv; /* $b */
1270 IEXT AV * Isortstack; /* temp stack during pp_sort() */
1271 IEXT AV * Isignalstack; /* temp stack during sighandler() */
1272 IEXT SV * Imystrk; /* temp key string for do_each() */
1273 IEXT I32 Idumplvl; /* indentation level on syntax tree dump */
1274 IEXT PMOP * Ioldlastpm; /* for saving regexp context during debugger */
1275 IEXT I32 Igensym; /* next symbol for getsym() to define */
1276 IEXT bool Ipreambled;
1277 IEXT int Ilaststatval IINIT(-1);
1278 IEXT I32 Ilaststype IINIT(OP_STAT);
1286 struct interpreter {
1298 # include <stdarg.h>
1301 # include <varargs.h>
1311 /* The following must follow proto.h */
1314 MGVTBL vtbl_sv = {magic_get,
1318 MGVTBL vtbl_env = {0, 0, 0, 0, 0};
1319 MGVTBL vtbl_envelem = {0, magic_setenv,
1321 MGVTBL vtbl_sig = {0, 0, 0, 0, 0};
1322 MGVTBL vtbl_sigelem = {0, magic_setsig,
1324 MGVTBL vtbl_pack = {0, 0,
1326 MGVTBL vtbl_packelem = {magic_getpack,
1330 MGVTBL vtbl_dbline = {0, magic_setdbline,
1332 MGVTBL vtbl_isa = {0, magic_setisa,
1334 MGVTBL vtbl_isaelem = {0, magic_setisa,
1336 MGVTBL vtbl_arylen = {magic_getarylen,
1339 MGVTBL vtbl_glob = {magic_getglob,
1342 MGVTBL vtbl_mglob = {0, magic_setmglob,
1344 MGVTBL vtbl_taint = {magic_gettaint,magic_settaint,
1346 MGVTBL vtbl_substr = {0, magic_setsubstr,
1348 MGVTBL vtbl_vec = {0, magic_setvec,
1350 MGVTBL vtbl_bm = {0, magic_setbm,
1352 MGVTBL vtbl_uvar = {magic_getuvar,
1357 EXT MGVTBL vtbl_env;
1358 EXT MGVTBL vtbl_envelem;
1359 EXT MGVTBL vtbl_sig;
1360 EXT MGVTBL vtbl_sigelem;
1361 EXT MGVTBL vtbl_pack;
1362 EXT MGVTBL vtbl_packelem;
1363 EXT MGVTBL vtbl_dbline;
1364 EXT MGVTBL vtbl_isa;
1365 EXT MGVTBL vtbl_isaelem;
1366 EXT MGVTBL vtbl_arylen;
1367 EXT MGVTBL vtbl_glob;
1368 EXT MGVTBL vtbl_mglob;
1369 EXT MGVTBL vtbl_taint;
1370 EXT MGVTBL vtbl_substr;
1371 EXT MGVTBL vtbl_vec;
1373 EXT MGVTBL vtbl_uvar;