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- /* $Header: str.h,v 3.0.1.4 90/11/10 02:07:52 lwall Locked $
- *
- * Copyright (c) 1989, Larry Wall
- *
- * You may distribute under the terms of the GNU General Public License
- * as specified in the README file that comes with the perl 3.0 kit.
- *
- * $Log: str.h,v $
- * Revision 3.0.1.4 90/11/10 02:07:52 lwall
- * patch38: temp string values are now copied less often
- *
- * Revision 3.0.1.3 90/10/16 10:44:04 lwall
- * patch29: added caller
- * patch29: scripts now run at almost full speed under the debugger
- *
- * Revision 3.0.1.2 90/08/09 05:23:24 lwall
- * patch19: various MSDOS and OS/2 patches folded in
- *
- * Revision 3.0.1.1 89/10/26 23:24:42 lwall
- * patch1: rearranged some structures to align doubles better on Gould
- *
- * Revision 3.0 89/10/18 15:23:49 lwall
- * 3.0 baseline
- *
- */
-
- struct string {
- char * str_ptr; /* pointer to malloced string */
- STRLEN str_len; /* allocated size */
- union {
- double str_nval; /* numeric value, if any */
- STAB *str_stab; /* magic stab for magic "key" string */
- 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 */
- } 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 */
- char str_pok; /* state of str_ptr */
- 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 */
- STAB *str_stab; /* magic stab for magic "key" string */
- 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 */
- } 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 */
- char str_pok; /* state of str_ptr */
- 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 $< */
- #endif
- };
-
- /* some extra info tacked to some lvalue strings */
-
- struct lstring {
- struct string lstr;
- STRLEN lstr_offset;
- STRLEN lstr_len;
- };
-
- /* These are the values of str_pok: */
- #define SP_VALID 1 /* str_ptr is valid */
- #define SP_FBM 2 /* string was compiled for fbm search */
- #define SP_STUDIED 4 /* string was studied */
- #define SP_CASEFOLD 8 /* case insensitive fbm search */
- #define SP_INTRP 16 /* string was compiled for interping */
- #define SP_TAIL 32 /* fbm string is tail anchored: /foo$/ */
- #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_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);
-
- extern char *str_2ptr PROTO((STR *));
- extern double str_2num PROTO((STR *));
- extern STR *str_static PROTO((STR *));
- extern STR *str_2static PROTO((STR *));
- extern STR *str_make PROTO((char *, STRLEN));
- extern STR *str_nmake PROTO((double));
- extern STR *str_smake PROTO((STR *));
- extern int str_cmp PROTO((STR *, STR *));
- extern int str_eq PROTO((STR *, STR *));
- extern void str_magic PROTO((STR *, STAB *, int, char *, STRLEN));
- extern void str_insert PROTO((STR *, STRLEN, STRLEN, char *, STRLEN));
- extern void str_numset PROTO((STR *, double));
- extern void str_sset PROTO((STR *, STR *));
- extern void str_nset PROTO((STR *, char *, STRLEN));
- extern void str_set PROTO((STR *, char *));
- extern void str_chop PROTO((STR *, char *));
- extern void str_ncat PROTO((STR *, char *, STRLEN));
- extern void str_scat PROTO((STR *, STR *));
- extern void str_cat PROTO((STR *, char *));
- extern STRLEN str_len PROTO((STR *));
- extern void str_reset PROTO((char *, HASH *));
- extern ARG *parselist PROTO((STR *));
-