3 * Copyright (c) 1987-1994, 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.
19 # define BYTEORDER 0x1234
22 /* Overall memory policy? */
28 * The following contortions are brought to you on behalf of all the
29 * standards, semi-standards, de facto standards, not-so-de-facto standards
30 * of the world, as well as all the other botches anyone ever thought of.
31 * The basic theory is that if we work hard enough here, the rest of the
32 * code can be a lot prettier. Well, so much for theory. Sorry, Henry...
37 # define malloc Mymalloc
38 # define realloc Myremalloc
41 # define safemalloc malloc
42 # define saferealloc realloc
43 # define safefree free
46 /* work around some libPW problems */
51 /* define this once if either system, instead of cluttering up the src */
52 #if defined(MSDOS) || defined(atarist)
56 #if defined(__STDC__) || defined(vax11c) || defined(_AIX) || defined(__stdc__) || defined(__cplusplus)
60 #if defined(HASVOLATILE) || defined(STANDARD_C)
62 # define VOL // to temporarily suppress warnings
70 #define TAINT_IF(c) (tainted |= (c))
71 #define TAINT_NOT (tainted = 0)
72 #define TAINT_PROPER(s) if (tainting) taint_proper(no_security, s)
73 #define TAINT_ENV() if (tainting) taint_env()
93 #include <appkit/NXCType.h>
98 #ifdef METHOD /* Defined by OSF/1 v3.0 by ctype.h */
105 # ifdef PARAM_NEEDS_TYPES
106 # include <sys/types.h>
108 # include <sys/param.h>
112 /* Use all the "standard" definitions? */
113 #if defined(STANDARD_C) && defined(I_STDLIB)
115 #endif /* STANDARD_C */
117 #define MEM_SIZE Size_t
119 #if defined(I_STRING) || defined(__cplusplus)
122 # include <strings.h>
125 #if !defined(HAS_STRCHR) && defined(HAS_INDEX) && !defined(strchr)
127 #define strrchr rindex
130 #if defined(mips) && defined(ultrix) && !defined(__STDC__)
135 # if !defined(STANDARD_C) && !defined(I_STRING) && !defined(I_MEMORY)
137 extern char * memcpy _((char*, char*, int));
143 # define memcpy(d,s,l) bcopy(s,d,l)
145 # define memcpy(d,s,l) my_bcopy(s,d,l)
148 #endif /* HAS_MEMCPY */
151 # if !defined(STANDARD_C) && !defined(I_STRING) && !defined(I_MEMORY)
153 extern char *memset _((char*, int, int));
156 # define memzero(d,l) memset(d,0,l)
160 # define memzero(d,l) bzero(d,l)
162 # define memzero(d,l) my_bzero(d,l)
165 #endif /* HAS_MEMSET */
168 # if !defined(STANDARD_C) && !defined(I_STRING) && !defined(I_MEMORY)
170 extern int memcmp _((char*, char*, int));
175 # define memcmp my_memcmp
177 #endif /* HAS_MEMCMP */
179 /* we prefer bcmp slightly for comparisons that don't care about ordering */
182 # define bcmp(s1,s2,l) memcmp(s1,s2,l)
184 #endif /* HAS_BCMP */
186 #if !defined(HAS_MEMMOVE) && !defined(memmove)
187 # if defined(HAS_BCOPY) && defined(HAS_SAFE_BCOPY)
188 # define memmove(d,s,l) bcopy(s,d,l)
190 # if defined(HAS_MEMCPY) && defined(HAS_SAFE_MEMCPY)
191 # define memmove(d,s,l) memcpy(d,s,l)
193 # define memmove(d,s,l) my_bcopy(s,d,l)
198 #ifndef _TYPES_ /* If types.h defines this it's easy. */
199 # ifndef major /* Does everyone's types.h define this? */
200 # include <sys/types.h>
205 # include <netinet/in.h>
208 #include <sys/stat.h>
210 /* The stat macros for Amdahl UTS, Unisoft System V/88 (and derivatives
211 like UTekV) are broken, sometimes giving false positives. Undefine
212 them here and let the code below set them to proper values.
214 The ghs macro stands for GreenHills Software C-1.8.5 which
215 is the C compiler for sysV88 and the various derivatives.
216 This header file bug is corrected in gcc-2.5.8 and later versions.
217 --Kaveh Ghazi (ghazi@noc.rutgers.edu) 10/3/94. */
219 #if defined(uts) || (defined(m88k) && defined(ghs))
233 # ifdef I_SYS_TIME_KERNEL
236 # include <sys/time.h>
237 # ifdef I_SYS_TIME_KERNEL
243 # if defined(HAS_TIMES) && defined(I_SYS_TIMES)
244 # include <sys/times.h>
248 #if defined(HAS_STRERROR) && (!defined(HAS_MKDIR) || !defined(HAS_RMDIR))
254 # define mkfifo(path, mode) (mknod((path), (mode) | S_IFIFO, 0))
256 #endif /* !HAS_MKFIFO */
261 # include <net/errno.h>
267 extern int errno; /* ANSI allows errno to be an lvalue expr */
273 char *strerror _((int,...));
275 char *strerror _((int));
278 # define Strerror strerror
281 # ifdef HAS_SYS_ERRLIST
283 extern char *sys_errlist[];
285 # define Strerror(e) \
286 ((e) < 0 || (e) >= sys_nerr ? "(unknown)" : sys_errlist[e])
293 # include <sys/ioctl.h>
297 #if defined(mc300) || defined(mc500) || defined(mc700) || defined(mc6000)
298 # ifdef HAS_SOCKETPAIR
299 # undef HAS_SOCKETPAIR
314 /* Configure already sets Direntry_t */
315 #if defined(I_DIRENT)
317 # if defined(NeXT) && defined(I_SYS_DIR) /* NeXT needs dirent + sys/dir.h */
318 # include <sys/dir.h>
322 # include <sys/ndir.h>
326 # include <ndir.h> /* may be wrong in the future */
328 # include <sys/dir.h>
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) || defined(pyr)
446 # define SLOPPYDIVIDE
449 #if defined(cray) || defined(convex) || defined (uts) || BYTEORDER > 0xffff
457 # if defined(convex) || defined (uts)
458 # define Quad_t long long
466 # define VOIDRET void
477 # include "unixish.h"
482 #define pause() sleep((32767<<16)+32767)
487 /* on BSDish systes we're safe */
488 # define IOCPARM_LEN(x) (((x) >> 16) & IOCPARM_MASK)
490 /* otherwise guess at what's safe */
491 # define IOCPARM_LEN(x) 256
495 typedef MEM_SIZE STRLEN;
497 typedef struct op OP;
498 typedef struct cop COP;
499 typedef struct unop UNOP;
500 typedef struct binop BINOP;
501 typedef struct listop LISTOP;
502 typedef struct logop LOGOP;
503 typedef struct condop CONDOP;
504 typedef struct pmop PMOP;
505 typedef struct svop SVOP;
506 typedef struct gvop GVOP;
507 typedef struct pvop PVOP;
508 typedef struct cvop CVOP;
509 typedef struct loop LOOP;
511 typedef struct Outrec Outrec;
512 typedef struct lstring Lstring;
513 typedef struct interpreter PerlInterpreter;
514 typedef struct ff FF;
515 typedef struct sv SV;
516 typedef struct av AV;
517 typedef struct hv HV;
518 typedef struct cv CV;
519 typedef struct regexp REGEXP;
520 typedef struct gp GP;
521 typedef struct sv GV;
522 typedef struct io IO;
523 typedef struct context CONTEXT;
524 typedef struct block BLOCK;
526 typedef struct magic MAGIC;
527 typedef struct xrv XRV;
528 typedef struct xpv XPV;
529 typedef struct xpviv XPVIV;
530 typedef struct xpvnv XPVNV;
531 typedef struct xpvmg XPVMG;
532 typedef struct xpvlv XPVLV;
533 typedef struct xpvav XPVAV;
534 typedef struct xpvhv XPVHV;
535 typedef struct xpvgv XPVGV;
536 typedef struct xpvcv XPVCV;
537 typedef struct xpvbm XPVBM;
538 typedef struct xpvfm XPVFM;
539 typedef struct xpvio XPVIO;
540 typedef struct mgvtbl MGVTBL;
541 typedef union any ANY;
543 typedef FILE * (*cryptswitch_t) _((FILE *rfp));
558 void (*any_dptr) _((void*));
575 #if defined(iAPX286) || defined(M_I286) || defined(I80286)
579 #if defined(htonl) && !defined(HAS_HTONL)
582 #if defined(htons) && !defined(HAS_HTONS)
585 #if defined(ntohl) && !defined(HAS_NTOHL)
588 #if defined(ntohs) && !defined(HAS_NTOHS)
592 #if (BYTEORDER & 0xffff) != 0x4321
598 #define htons my_swap
599 #define htonl my_htonl
600 #define ntohs my_swap
601 #define ntohl my_ntohl
604 #if (BYTEORDER & 0xffff) == 0x4321
613 * Little-endian byte order functions - 'v' for 'VAX', or 'reVerse'.
616 #if BYTEORDER != 0x1234
621 # if BYTEORDER == 0x4321
622 # define vtohl(x) ((((x)&0xFF)<<24) \
624 +(((x)&0x0000FF00)<<8) \
625 +(((x)&0x00FF0000)>>8) )
626 # define vtohs(x) ((((x)&0xFF)<<8) + (((x)>>8)&0xFF))
627 # define htovl(x) vtohl(x)
628 # define htovs(x) vtohs(x)
630 /* otherwise default to functions in util.c */
634 #define U_S(what) ((U16)(what))
635 #define U_I(what) ((unsigned int)(what))
636 #define U_L(what) ((U32)(what))
638 U32 cast_ulong _((double));
639 #define U_S(what) ((U16)cast_ulong(what))
640 #define U_I(what) ((unsigned int)cast_ulong(what))
641 #define U_L(what) (cast_ulong(what))
645 #define I_32(what) ((I32)(what))
646 #define I_V(what) ((IV)(what))
648 I32 cast_i32 _((double));
649 #define I_32(what) (cast_i32(what))
650 IV cast_iv _((double));
651 #define I_V(what) (cast_iv(what))
665 #define TMPPATH "plXXXXXX"
668 #define TMPPATH "/sys$scratch/perl-eXXXXXX"
670 #define TMPPATH "/tmp/perl-eXXXXXX"
675 Uid_t getuid _((void));
676 Uid_t geteuid _((void));
677 Gid_t getgid _((void));
678 Gid_t getegid _((void));
684 #define DEBUG(a) if (debug) a
685 #define DEBUG_p(a) if (debug & 1) a
686 #define DEBUG_s(a) if (debug & 2) a
687 #define DEBUG_l(a) if (debug & 4) a
688 #define DEBUG_t(a) if (debug & 8) a
689 #define DEBUG_o(a) if (debug & 16) a
690 #define DEBUG_c(a) if (debug & 32) a
691 #define DEBUG_P(a) if (debug & 64) a
692 #define DEBUG_m(a) if (debug & 128) a
693 #define DEBUG_f(a) if (debug & 256) a
694 #define DEBUG_r(a) if (debug & 512) a
695 #define DEBUG_x(a) if (debug & 1024) a
696 #define DEBUG_u(a) if (debug & 2048) a
697 #define DEBUG_L(a) if (debug & 4096) a
698 #define DEBUG_H(a) if (debug & 8192) a
699 #define DEBUG_X(a) if (debug & 16384) a
700 #define DEBUG_D(a) if (debug & 32768) a
721 #define YYMAXDEPTH 300
723 #define assert(what) DEB( { \
725 croak("Assertion failed: file \"%s\", line %d", \
726 __FILE__, __LINE__); \
731 I32 (*uf_val)_((IV, SV*));
732 I32 (*uf_set)_((IV, SV*));
736 /* Fix these up for __STDC__ */
738 char *mktemp _((char*));
739 double atof _((const char*));
743 /* All of these are in stdlib.h or time.h for ANSI C */
745 struct tm *gmtime(), *localtime();
746 char *strchr(), *strrchr();
747 char *strcpy(), *strcat();
748 #endif /* ! STANDARD_C */
757 double exp _((double));
758 double fmod _((double,double));
759 double log _((double));
760 double sqrt _((double));
761 double modf _((double,double*));
762 double sin _((double));
763 double cos _((double));
764 double atan2 _((double,double));
765 double pow _((double,double));
773 # define fmod(x,y) drem((x),(y))
776 # define fmod(x,y) my_fmod(x,y)
781 char *crypt _((const char*, const char*));
782 char *getenv _((const char*));
783 Off_t lseek _((int,Off_t,int));
784 char *getlogin _((void));
789 I32 unlnk _((char*));
791 #define UNLINK unlink
795 # ifdef HAS_SETRESUID
796 # define setreuid(r,e) setresuid(r,e,(Uid_t)-1)
797 # define HAS_SETREUID
801 # ifdef HAS_SETRESGID
802 # define setregid(r,e) setresgid(r,e,(Gid_t)-1)
803 # define HAS_SETREGID
815 # define PAD_SV(po) pad_sv(po)
817 # define PAD_SV(po) curpad[po]
825 EXT PerlInterpreter * curinterp; /* currently running interpreter */
826 #ifndef VMS /* VMS doesn't use environ array */
827 extern char ** environ; /* environment variables supplied via exec */
829 EXT int uid; /* current real user id */
830 EXT int euid; /* current effective user id */
831 EXT int gid; /* current real group id */
832 EXT int egid; /* current effective group id */
833 EXT bool nomemok; /* let malloc context handle nomem */
834 EXT U32 an; /* malloc sequence number */
835 EXT U32 cop_seqmax; /* statement sequence number */
836 EXT U32 op_seqmax; /* op sequence number */
837 EXT U32 evalseq; /* eval sequence number */
838 EXT U32 sub_generation; /* inc to force methods to be looked up again */
839 EXT char ** origenviron;
841 EXT U32 * profiledata;
843 EXT XPV* xiv_arenaroot; /* list of allocated xiv areas */
844 EXT IV ** xiv_root; /* free xiv list--shared by interpreters */
845 EXT double * xnv_root; /* free xnv list--shared by interpreters */
846 EXT XRV * xrv_root; /* free xrv list--shared by interpreters */
847 EXT XPV * xpv_root; /* free xpv list--shared by interpreters */
849 /* Stack for currently executing thread--context switch must handle this. */
850 EXT SV ** stack_base; /* stack->array_ary */
851 EXT SV ** stack_sp; /* stack pointer now */
852 EXT SV ** stack_max; /* stack->array_ary + stack->array_max */
854 /* likewise for these */
856 EXT OP * op; /* current op--oughta be in a global register */
858 EXT I32 * scopestack; /* blocks we've entered */
859 EXT I32 scopestack_ix;
860 EXT I32 scopestack_max;
862 EXT ANY* savestack; /* to save non-local values on */
863 EXT I32 savestack_ix;
864 EXT I32 savestack_max;
866 EXT OP ** retstack; /* returns we've pushed */
868 EXT I32 retstack_max;
870 EXT I32 * markstack; /* stackmarks we're remembering */
871 EXT I32 * markstack_ptr; /* stackmarks we're remembering */
872 EXT I32 * markstack_max; /* stackmarks we're remembering */
880 EXT char tokenbuf[256];
881 EXT struct stat statbuf;
883 EXT struct tms timesbuf;
885 EXT STRLEN na; /* for use in SvPV when length is Not Applicable */
887 /* for tmp use in stupid debuggers */
892 /* handy constants */
893 EXT char * Yes INIT("1");
894 EXT char * No INIT("");
895 EXT char * hexdigit INIT("0123456789abcdef0123456789ABCDEFx");
896 EXT char * patleave INIT("\\.^$@dDwWsSbB+*?|()-nrtfeaxc0123456789[{]}");
897 EXT char * vert INIT("|");
899 EXT char warn_uninit[]
900 INIT("Use of uninitialized value");
901 EXT char warn_nosemi[]
902 INIT("Semicolon seems to be missing");
903 EXT char warn_reserved[]
904 INIT("Unquoted string \"%s\" may clash with future reserved word");
906 INIT("Unsuccessful %s on filename containing newline");
907 EXT char no_wrongref[]
908 INIT("Can't use %s ref as %s ref");
910 INIT("Can't use a string as %s ref while \"strict refs\" in use");
912 INIT("Can't use an undefined value as %s reference");
914 INIT("Modification of non-creatable array value attempted, subscript %d");
916 INIT("Modification of non-creatable hash value attempted, subscript \"%s\"");
918 INIT("Modification of a read-only value attempted");
920 INIT("Out of memory!\n");
921 EXT char no_security[]
922 INIT("Insecure dependency in %s%s");
923 EXT char no_sock_func[]
924 INIT("Unsupported socket function \"%s\" called");
925 EXT char no_dir_func[]
926 INIT("Unsupported directory function \"%s\" called");
928 INIT("The %s function is unimplemented");
934 EXT char * cshname INIT(CSH);
939 EXT char *sig_name[] = {
943 EXT char *sig_name[];
947 EXT unsigned char fold[] = { /* fast case folding table */
948 0, 1, 2, 3, 4, 5, 6, 7,
949 8, 9, 10, 11, 12, 13, 14, 15,
950 16, 17, 18, 19, 20, 21, 22, 23,
951 24, 25, 26, 27, 28, 29, 30, 31,
952 32, 33, 34, 35, 36, 37, 38, 39,
953 40, 41, 42, 43, 44, 45, 46, 47,
954 48, 49, 50, 51, 52, 53, 54, 55,
955 56, 57, 58, 59, 60, 61, 62, 63,
956 64, 'a', 'b', 'c', 'd', 'e', 'f', 'g',
957 'h', 'i', 'j', 'k', 'l', 'm', 'n', 'o',
958 'p', 'q', 'r', 's', 't', 'u', 'v', 'w',
959 'x', 'y', 'z', 91, 92, 93, 94, 95,
960 96, 'A', 'B', 'C', 'D', 'E', 'F', 'G',
961 'H', 'I', 'J', 'K', 'L', 'M', 'N', 'O',
962 'P', 'Q', 'R', 'S', 'T', 'U', 'V', 'W',
963 'X', 'Y', 'Z', 123, 124, 125, 126, 127,
964 128, 129, 130, 131, 132, 133, 134, 135,
965 136, 137, 138, 139, 140, 141, 142, 143,
966 144, 145, 146, 147, 148, 149, 150, 151,
967 152, 153, 154, 155, 156, 157, 158, 159,
968 160, 161, 162, 163, 164, 165, 166, 167,
969 168, 169, 170, 171, 172, 173, 174, 175,
970 176, 177, 178, 179, 180, 181, 182, 183,
971 184, 185, 186, 187, 188, 189, 190, 191,
972 192, 193, 194, 195, 196, 197, 198, 199,
973 200, 201, 202, 203, 204, 205, 206, 207,
974 208, 209, 210, 211, 212, 213, 214, 215,
975 216, 217, 218, 219, 220, 221, 222, 223,
976 224, 225, 226, 227, 228, 229, 230, 231,
977 232, 233, 234, 235, 236, 237, 238, 239,
978 240, 241, 242, 243, 244, 245, 246, 247,
979 248, 249, 250, 251, 252, 253, 254, 255
982 EXT unsigned char fold[];
986 EXT unsigned char freq[] = { /* letter frequencies for mixed English/C */
987 1, 2, 84, 151, 154, 155, 156, 157,
988 165, 246, 250, 3, 158, 7, 18, 29,
989 40, 51, 62, 73, 85, 96, 107, 118,
990 129, 140, 147, 148, 149, 150, 152, 153,
991 255, 182, 224, 205, 174, 176, 180, 217,
992 233, 232, 236, 187, 235, 228, 234, 226,
993 222, 219, 211, 195, 188, 193, 185, 184,
994 191, 183, 201, 229, 181, 220, 194, 162,
995 163, 208, 186, 202, 200, 218, 198, 179,
996 178, 214, 166, 170, 207, 199, 209, 206,
997 204, 160, 212, 216, 215, 192, 175, 173,
998 243, 172, 161, 190, 203, 189, 164, 230,
999 167, 248, 227, 244, 242, 255, 241, 231,
1000 240, 253, 169, 210, 245, 237, 249, 247,
1001 239, 168, 252, 251, 254, 238, 223, 221,
1002 213, 225, 177, 197, 171, 196, 159, 4,
1003 5, 6, 8, 9, 10, 11, 12, 13,
1004 14, 15, 16, 17, 19, 20, 21, 22,
1005 23, 24, 25, 26, 27, 28, 30, 31,
1006 32, 33, 34, 35, 36, 37, 38, 39,
1007 41, 42, 43, 44, 45, 46, 47, 48,
1008 49, 50, 52, 53, 54, 55, 56, 57,
1009 58, 59, 60, 61, 63, 64, 65, 66,
1010 67, 68, 69, 70, 71, 72, 74, 75,
1011 76, 77, 78, 79, 80, 81, 82, 83,
1012 86, 87, 88, 89, 90, 91, 92, 93,
1013 94, 95, 97, 98, 99, 100, 101, 102,
1014 103, 104, 105, 106, 108, 109, 110, 111,
1015 112, 113, 114, 115, 116, 117, 119, 120,
1016 121, 122, 123, 124, 125, 126, 127, 128,
1017 130, 131, 132, 133, 134, 135, 136, 137,
1018 138, 139, 141, 142, 143, 144, 145, 146
1021 EXT unsigned char freq[];
1026 EXT char* block_type[] = {
1035 EXT char* block_type[];
1039 /*****************************************************************************/
1040 /* This lexer/parser stuff is currently global since yacc is hard to reenter */
1041 /*****************************************************************************/
1042 /* XXX This needs to be revisited, since BEGIN makes yacc re-enter... */
1055 EXT U32 lex_state; /* next token is determined */
1056 EXT U32 lex_defer; /* state after determined token */
1057 EXT expectation lex_expect; /* expect after determined token */
1058 EXT I32 lex_brackets; /* bracket count */
1059 EXT I32 lex_formbrack; /* bracket count at outer format level */
1060 EXT I32 lex_fakebrack; /* outer bracket is mere delimiter */
1061 EXT I32 lex_casemods; /* casemod count */
1062 EXT I32 lex_dojoin; /* doing an array interpolation */
1063 EXT I32 lex_starts; /* how many interps done on level */
1064 EXT SV * lex_stuff; /* runtime pattern from m// or s/// */
1065 EXT SV * lex_repl; /* runtime replacement from s/// */
1066 EXT OP * lex_op; /* extra info to pass back on op */
1067 EXT OP * lex_inpat; /* in pattern $) and $| are special */
1068 EXT I32 lex_inwhat; /* what kind of quoting are we in */
1069 EXT char * lex_brackstack; /* what kind of brackets to pop */
1070 EXT char * lex_casestack; /* what kind of case mods in effect */
1072 /* What we know when we're in LEX_KNOWNEXT state. */
1073 EXT YYSTYPE nextval[5]; /* value of next token, if any */
1074 EXT I32 nexttype[5]; /* type of next token */
1077 EXT FILE * VOL rsfp INIT(Nullfp);
1080 EXT char * oldbufptr;
1081 EXT char * oldoldbufptr;
1083 EXT expectation expect INIT(XSTATE); /* how to interpret ambiguous tokens */
1084 EXT char * autoboot_preamble INIT(Nullch);
1086 EXT I32 multi_start; /* 1st line of multi-line string */
1087 EXT I32 multi_end; /* last line of multi-line string */
1088 EXT I32 multi_open; /* delimiter of said string */
1089 EXT I32 multi_close; /* delimiter of said string */
1092 EXT I32 error_count; /* how many errors so far, max 10 */
1093 EXT I32 subline; /* line this subroutine began on */
1094 EXT SV * subname; /* name of current subroutine */
1096 EXT AV * comppad; /* storage for lexically scoped temporaries */
1097 EXT AV * comppad_name; /* variable names for "my" variables */
1098 EXT I32 comppad_name_fill;/* last "introduced" variable offset */
1099 EXT I32 min_intro_pending;/* start of vars to introduce */
1100 EXT I32 max_intro_pending;/* end of vars to introduce */
1101 EXT I32 padix; /* max used index in current "register" pad */
1102 EXT I32 padix_floor; /* how low may inner block reset padix */
1103 EXT bool pad_reset_pending; /* reset pad on next attempted alloc */
1106 EXT I32 thisexpr; /* name id for nothing_in_common() */
1107 EXT char * last_uni; /* position of last named-unary operator */
1108 EXT char * last_lop; /* position of last list operator */
1109 EXT OPCODE last_lop_op; /* last list operator */
1110 EXT bool in_my; /* we're compiling a "my" declaration */
1112 EXT I32 cryptseen; /* has fast crypt() been initialized? */
1115 EXT U32 hints; /* various compilation flags */
1117 /* Note: the lowest 8 bits are reserved for
1118 stuffing into op->op_private */
1119 #define HINT_INTEGER 0x00000001
1120 #define HINT_STRICT_REFS 0x00000002
1122 #define HINT_BLOCK_SCOPE 0x00000100
1123 #define HINT_STRICT_SUBS 0x00000200
1124 #define HINT_STRICT_VARS 0x00000400
1126 /**************************************************************************/
1127 /* This regexp stuff is global since it always happens within 1 expr eval */
1128 /**************************************************************************/
1130 EXT char * regprecomp; /* uncompiled string. */
1131 EXT char * regparse; /* Input-scan pointer. */
1132 EXT char * regxend; /* End of input for compile */
1133 EXT I32 regnpar; /* () count. */
1134 EXT char * regcode; /* Code-emit pointer; ®dummy = don't. */
1135 EXT I32 regsize; /* Code size. */
1136 EXT I32 regnaughty; /* How bad is this pattern? */
1137 EXT I32 regsawback; /* Did we see \1, ...? */
1139 EXT char * reginput; /* String-input pointer. */
1140 EXT char * regbol; /* Beginning of input, for ^ check. */
1141 EXT char * regeol; /* End of input, for $ check. */
1142 EXT char ** regstartp; /* Pointer to startp array. */
1143 EXT char ** regendp; /* Ditto for endp. */
1144 EXT U32 * reglastparen; /* Similarly for lastparen. */
1145 EXT char * regtill; /* How far we are required to go. */
1146 EXT U16 regflags; /* are we folding, multilining? */
1147 EXT char regprev; /* char before regbol, \n if none */
1149 /***********************************************/
1150 /* Global only to current interpreter instance */
1151 /***********************************************/
1156 struct interpreter {
1159 #define IINIT(x) INIT(x)
1162 /* pseudo environmental stuff */
1164 IEXT char ** Iorigargv;
1168 IEXT char * Iorigfilename;
1173 IEXT char Ipatchlevel[6];
1174 IEXT char * Inrs IINIT("\n");
1175 IEXT U32 Inrschar IINIT('\n'); /* final char of rs, or 0777 if none */
1176 IEXT I32 Inrslen IINIT(1);
1177 IEXT char * Isplitstr IINIT(" ");
1178 IEXT bool Ipreprocess;
1184 IEXT bool Idoswitches;
1186 IEXT bool Idoextract;
1187 IEXT bool Isawampersand; /* must save all match strings */
1188 IEXT bool Isawstudy; /* do fbm_instr on all strings */
1189 IEXT bool Isawi; /* study must assume case insensitive */
1192 IEXT bool Ido_undump; /* -u or dump seen? */
1193 IEXT char * Iinplace;
1194 IEXT char * Ie_tmpname;
1196 IEXT VOL U32 Idebug;
1199 /* magical thingies */
1200 IEXT Time_t Ibasetime; /* $^T */
1201 IEXT SV * Iformfeed; /* $^L */
1202 IEXT char * Ichopset IINIT(" \n-"); /* $: */
1203 IEXT char * Irs IINIT("\n"); /* $/ */
1204 IEXT U32 Irschar IINIT('\n'); /* final char of rs, or 0777 if none */
1205 IEXT STRLEN Irslen IINIT(1);
1207 IEXT char * Iofs; /* $, */
1208 IEXT STRLEN Iofslen;
1209 IEXT char * Iors; /* $\ */
1210 IEXT STRLEN Iorslen;
1211 IEXT char * Iofmt; /* $# */
1212 IEXT I32 Imaxsysfd IINIT(MAXSYSFD); /* top fd to pass to subprocesses */
1213 IEXT int Imultiline; /* $*--do strings hold >1 line? */
1214 IEXT U16 Istatusvalue; /* $? */
1216 IEXT struct stat Istatcache; /* _ */
1218 IEXT SV * Istatname IINIT(Nullsv);
1220 /* shortcuts to various I/O objects */
1222 IEXT GV * Ilast_in_gv;
1225 IEXT GV * Idefoutgv;
1226 IEXT GV * Iargvoutgv;
1228 /* shortcuts to regexp stuff */
1232 IEXT PMOP * Icurpm; /* what to do \ interps from */
1233 IEXT I32 * Iscreamfirst;
1234 IEXT I32 * Iscreamnext;
1235 IEXT I32 Imaxscream IINIT(-1);
1236 IEXT SV * Ilastscream;
1238 /* shortcuts to debugging objects */
1242 IEXT SV * IDBsingle;
1244 IEXT SV * IDBsignal;
1245 IEXT AV * Ilineary; /* lines of script for debugger */
1246 IEXT AV * Idbargs; /* args to call listed by caller function */
1249 IEXT HV * Idefstash; /* main symbol table */
1250 IEXT HV * Icurstash; /* symbol table for current package */
1251 IEXT HV * Idebstash; /* symbol table for perldb package */
1252 IEXT SV * Icurstname; /* name of current package */
1253 IEXT AV * Ibeginav; /* names of BEGIN subroutines */
1254 IEXT AV * Iendav; /* names of END subroutines */
1255 IEXT AV * Ipad; /* storage for lexically scoped temporaries */
1256 IEXT AV * Ipadname; /* variable names for "my" variables */
1258 /* memory management */
1259 IEXT SV ** Itmps_stack;
1260 IEXT I32 Itmps_ix IINIT(-1);
1261 IEXT I32 Itmps_floor IINIT(-1);
1263 IEXT I32 Isv_count; /* how many SV* are currently allocated */
1264 IEXT I32 Isv_objcount; /* how many objects are currently allocated */
1265 IEXT SV* Isv_root; /* storage for SVs belonging to interp */
1266 IEXT SV* Isv_arenaroot; /* list of areas for garbage collection */
1268 /* funky return mechanisms */
1269 IEXT I32 Ilastspbase;
1271 IEXT int Iforkprocess; /* so do_open |- can return proc# */
1273 /* subprocess state */
1274 IEXT AV * Ifdpid; /* keep fd-to-pid mappings for my_popen */
1275 IEXT HV * Ipidstatus; /* keep pid-to-status mappings for waitpid */
1277 /* internal state */
1278 IEXT VOL int Iin_eval; /* trap "fatal" errors? */
1279 IEXT OP * Irestartop; /* Are we propagating an error from croak? */
1280 IEXT int Idelaymagic; /* ($<,$>) = ... */
1281 IEXT bool Idirty; /* In the middle of tearing things down? */
1282 IEXT bool Ilocalizing; /* are we processing a local() list? */
1283 IEXT bool Itainted; /* using variables controlled by $< */
1284 IEXT bool Itainting; /* doing taint checks */
1288 IEXT I32 Idlmax IINIT(128);
1289 IEXT char * Idebname;
1290 IEXT char * Idebdelim;
1292 /* current interpreter roots */
1293 IEXT OP * Imain_root;
1294 IEXT OP * Imain_start;
1295 IEXT OP * Ieval_root;
1296 IEXT OP * Ieval_start;
1298 /* runtime control stuff */
1299 IEXT COP * VOL Icurcop IINIT(&compiling);
1300 IEXT line_t Icopline IINIT(NOLINE);
1301 IEXT CONTEXT * Icxstack;
1302 IEXT I32 Icxstack_ix IINIT(-1);
1303 IEXT I32 Icxstack_max IINIT(128);
1304 IEXT jmp_buf Itop_env;
1308 IEXT AV * Istack; /* THE STACK */
1309 IEXT AV * Imainstack; /* the stack when nothing funny is happening */
1310 IEXT SV ** Imystack_base; /* stack->array_ary */
1311 IEXT SV ** Imystack_sp; /* stack pointer now */
1312 IEXT SV ** Imystack_max; /* stack->array_ary + stack->array_max */
1314 /* format accumulators */
1315 IEXT SV * Iformtarget;
1316 IEXT SV * Ibodytarget;
1317 IEXT SV * Itoptarget;
1319 /* statics moved here for shared library purposes */
1320 IEXT SV Istrchop; /* return value from chop */
1321 IEXT int Ifilemode; /* so nextargv() can preserve mode */
1322 IEXT int Ilastfd; /* what to preserve mode on */
1323 IEXT char * Ioldname; /* what to preserve mode on */
1324 IEXT char ** IArgv; /* stuff to free from do_aexec, vfork safe */
1325 IEXT char * ICmd; /* stuff to free from do_aexec, vfork safe */
1326 IEXT OP * Isortcop; /* user defined sort routine */
1327 IEXT HV * Isortstash; /* which is in some package or other */
1328 IEXT GV * Ifirstgv; /* $a */
1329 IEXT GV * Isecondgv; /* $b */
1330 IEXT AV * Isortstack; /* temp stack during pp_sort() */
1331 IEXT AV * Isignalstack; /* temp stack during sighandler() */
1332 IEXT SV * Imystrk; /* temp key string for do_each() */
1333 IEXT I32 Idumplvl; /* indentation level on syntax tree dump */
1334 IEXT PMOP * Ioldlastpm; /* for saving regexp context during debugger */
1335 IEXT I32 Igensym; /* next symbol for getsym() to define */
1336 IEXT bool Ipreambled;
1337 IEXT int Ilaststatval IINIT(-1);
1338 IEXT I32 Ilaststype IINIT(OP_STAT);
1346 struct interpreter {
1364 # include <stdarg.h>
1367 # include <varargs.h>
1374 #define Perl_sv_setptrobj(rv,ptr,name) Perl_sv_setref_iv(rv,name,(IV)ptr)
1375 #define Perl_sv_setptrref(rv,ptr) Perl_sv_setref_iv(rv,Nullch,(IV)ptr)
1377 #define sv_setptrobj(rv,ptr,name) sv_setref_iv(rv,name,(IV)ptr)
1378 #define sv_setptrref(rv,ptr) sv_setref_iv(rv,Nullch,(IV)ptr)
1385 /* The following must follow proto.h */
1388 MGVTBL vtbl_sv = {magic_get,
1392 MGVTBL vtbl_env = {0, 0, 0, 0, 0};
1393 MGVTBL vtbl_envelem = {0, magic_setenv,
1396 MGVTBL vtbl_sig = {0, 0, 0, 0, 0};
1397 MGVTBL vtbl_sigelem = {0, magic_setsig,
1399 MGVTBL vtbl_pack = {0, 0, 0, magic_wipepack,
1401 MGVTBL vtbl_packelem = {magic_getpack,
1405 MGVTBL vtbl_dbline = {0, magic_setdbline,
1407 MGVTBL vtbl_isa = {0, magic_setisa,
1409 MGVTBL vtbl_isaelem = {0, magic_setisa,
1411 MGVTBL vtbl_arylen = {magic_getarylen,
1414 MGVTBL vtbl_glob = {magic_getglob,
1417 MGVTBL vtbl_mglob = {0, magic_setmglob,
1419 MGVTBL vtbl_taint = {magic_gettaint,magic_settaint,
1421 MGVTBL vtbl_substr = {0, magic_setsubstr,
1423 MGVTBL vtbl_vec = {0, magic_setvec,
1425 MGVTBL vtbl_pos = {magic_getpos,
1428 MGVTBL vtbl_bm = {0, magic_setbm,
1430 MGVTBL vtbl_uvar = {magic_getuvar,
1435 MGVTBL vtbl_amagic = {0, magic_setamagic,
1437 MGVTBL vtbl_amagicelem = {0, magic_setamagic,
1439 #endif /* OVERLOAD */
1443 EXT MGVTBL vtbl_env;
1444 EXT MGVTBL vtbl_envelem;
1445 EXT MGVTBL vtbl_sig;
1446 EXT MGVTBL vtbl_sigelem;
1447 EXT MGVTBL vtbl_pack;
1448 EXT MGVTBL vtbl_packelem;
1449 EXT MGVTBL vtbl_dbline;
1450 EXT MGVTBL vtbl_isa;
1451 EXT MGVTBL vtbl_isaelem;
1452 EXT MGVTBL vtbl_arylen;
1453 EXT MGVTBL vtbl_glob;
1454 EXT MGVTBL vtbl_mglob;
1455 EXT MGVTBL vtbl_taint;
1456 EXT MGVTBL vtbl_substr;
1457 EXT MGVTBL vtbl_vec;
1458 EXT MGVTBL vtbl_pos;
1460 EXT MGVTBL vtbl_uvar;
1463 EXT MGVTBL vtbl_amagic;
1464 EXT MGVTBL vtbl_amagicelem;
1465 #endif /* OVERLOAD */
1470 EXT long amagic_generation;
1472 #define NofAMmeth 27
1474 EXT char * AMG_names[NofAMmeth][2] = {
1476 {"bool", "nomethod"},
1504 EXT char * AMG_names[NofAMmeth][2];
1505 #endif /* def INITAMAGIC */
1510 CV* table[NofAMmeth*2];
1513 typedef struct am_table AMT;
1515 #define AMGfallNEVER 1
1517 #define AMGfallYES 3
1520 fallback_amg, abs_amg,
1521 bool__amg, nomethod_amg,
1522 string_amg, numer_amg,
1523 add_amg, add_ass_amg,
1524 subtr_amg, subtr_ass_amg,
1525 mult_amg, mult_ass_amg,
1526 div_amg, div_ass_amg,
1527 mod_amg, mod_ass_amg,
1528 pow_amg, pow_ass_amg,
1529 lshift_amg, lshift_ass_amg,
1530 rshift_amg, rshift_ass_amg,
1545 repeat_amg, repeat_ass_amg,
1546 concat_amg, concat_ass_amg
1548 #endif /* OVERLOAD */
1550 #endif /* Include guard */