4.4BSD/usr/src/contrib/perl-4.036/str.h
/* $RCSfile: str.h,v $$Revision: 4.0.1.4 $$Date: 92/06/08 15:41:45 $
*
* Copyright (c) 1991, Larry Wall
*
* You may distribute under the terms of either the GNU General Public
* License or the Artistic License, as specified in the README file.
*
* $Log: str.h,v $
* Revision 4.0.1.4 92/06/08 15:41:45 lwall
* patch20: fixed confusion between a *var's real name and its effective name
* patch20: removed implicit int declarations on functions
*
* Revision 4.0.1.3 91/11/05 18:41:47 lwall
* patch11: random cleanup
* patch11: solitary subroutine references no longer trigger typo warnings
*
* Revision 4.0.1.2 91/06/07 11:58:33 lwall
* patch4: new copyright notice
*
* Revision 4.0.1.1 91/04/12 09:16:12 lwall
* patch1: you may now use "die" and "caller" in a signal handler
*
* Revision 4.0 91/03/20 01:40:04 lwall
* 4.0 baseline.
*
*/
struct string {
char * str_ptr; /* pointer to malloced string */
STRLEN str_len; /* allocated size */
union {
double str_nval; /* numeric value, if any */
long str_useful; /* is this search optimization effective? */
ARG *str_args; /* list of args for interpreted string */
HASH *str_hash; /* string represents an assoc array (stab?) */
ARRAY *str_array; /* string represents an array */
CMD *str_cmd; /* command for this source line */
struct {
STAB *stb_stab; /* magic stab for magic "key" string */
HASH *stb_stash; /* which symbol table this stab is in */
} stb_u;
} str_u;
STRLEN str_cur; /* length of str_ptr as a C string */
STR *str_magic; /* while free, link to next free str */
/* while in use, ptr to "key" for magic items */
unsigned char str_pok; /* state of str_ptr */
unsigned char str_nok; /* state of str_nval */
unsigned char str_rare; /* used by search strings */
unsigned char str_state; /* one of SS_* below */
/* also used by search strings for backoff */
#ifdef TAINT
bool str_tainted; /* 1 if possibly under control of $< */
#endif
};
struct stab { /* should be identical, except for str_ptr */
STBP * str_ptr; /* pointer to malloced string */
STRLEN str_len; /* allocated size */
union {
double str_nval; /* numeric value, if any */
long str_useful; /* is this search optimization effective? */
ARG *str_args; /* list of args for interpreted string */
HASH *str_hash; /* string represents an assoc array (stab?) */
ARRAY *str_array; /* string represents an array */
CMD *str_cmd; /* command for this source line */
struct {
STAB *stb_stab; /* magic stab for magic "key" string */
HASH *stb_stash; /* which symbol table this stab is in */
} stb_u;
} str_u;
STRLEN str_cur; /* length of str_ptr as a C string */
STR *str_magic; /* while free, link to next free str */
/* while in use, ptr to "key" for magic items */
unsigned char str_pok; /* state of str_ptr */
unsigned char str_nok; /* state of str_nval */
unsigned char str_rare; /* used by search strings */
unsigned char str_state; /* one of SS_* below */
/* also used by search strings for backoff */
#ifdef TAINT
bool str_tainted; /* 1 if possibly under control of $< */
#endif
};
#define str_stab stb_u.stb_stab
#define str_stash stb_u.stb_stash
/* some extra info tacked to some lvalue strings */
struct lstring {
struct string lstr;
STRLEN lstr_offset;
STRLEN lstr_len;
};
/* These are the values of str_pok: */
#define SP_VALID 1 /* str_ptr is valid */
#define SP_FBM 2 /* string was compiled for fbm search */
#define SP_STUDIED 4 /* string was studied */
#define SP_CASEFOLD 8 /* case insensitive fbm search */
#define SP_INTRP 16 /* string was compiled for interping */
#define SP_TAIL 32 /* fbm string is tail anchored: /foo$/ */
#define SP_MULTI 64 /* symbol table entry probably isn't a typo */
#define SP_TEMP 128 /* string slated to die, so can be plundered */
#define Nullstr Null(STR*)
/* These are the values of str_state: */
#define SS_NORM 0 /* normal string */
#define SS_INCR 1 /* normal string, incremented ptr */
#define SS_SARY 2 /* array on save stack */
#define SS_SHASH 3 /* associative array on save stack */
#define SS_SINT 4 /* integer on save stack */
#define SS_SLONG 5 /* long on save stack */
#define SS_SSTRP 6 /* STR* on save stack */
#define SS_SHPTR 7 /* HASH* on save stack */
#define SS_SNSTAB 8 /* non-stab on save stack */
#define SS_SCSV 9 /* callsave structure on save stack */
#define SS_SAPTR 10 /* ARRAY* on save stack */
#define SS_HASH 253 /* carrying an hash */
#define SS_ARY 254 /* carrying an array */
#define SS_FREE 255 /* in free list */
/* str_state may have any value 0-255 when used to hold fbm pattern, in which */
/* case it indicates offset to rarest character in screaminstr key */
/* the following macro updates any magic values this str is associated with */
#ifdef TAINT
#define STABSET(x) \
(x)->str_tainted |= tainted; \
if ((x)->str_magic) \
stabset((x)->str_magic,(x))
#else
#define STABSET(x) \
if ((x)->str_magic) \
stabset((x)->str_magic,(x))
#endif
#define STR_SSET(dst,src) if (dst != src) str_sset(dst,src)
EXT STR **tmps_list;
EXT int tmps_max INIT(-1);
EXT int tmps_base INIT(-1);
char *str_2ptr();
double str_2num();
STR *str_mortal();
STR *str_2mortal();
STR *str_make();
STR *str_nmake();
STR *str_smake();
int str_cmp();
int str_eq();
void str_magic();
void str_insert();
void str_numset();
void str_sset();
void str_nset();
void str_set();
void str_chop();
void str_cat();
void str_scat();
void str_ncat();
void str_reset();
void str_taintproper();
void str_taintenv();
STRLEN str_len();
#define MULTI (3)