1 /* $RCSfile: str.h,v $$Revision: 4.0.1.1 $$Date: 91/04/12 09:16:12 $
3 * Copyright (c) 1989, Larry Wall
5 * You may distribute under the terms of the GNU General Public License
6 * as specified in the README file that comes with the perl 3.0 kit.
9 * Revision 4.0.1.1 91/04/12 09:16:12 lwall
10 * patch1: you may now use "die" and "caller" in a signal handler
12 * Revision 4.0 91/03/20 01:40:04 lwall
18 char * str_ptr; /* pointer to malloced string */
19 STRLEN str_len; /* allocated size */
21 double str_nval; /* numeric value, if any */
22 STAB *str_stab; /* magic stab for magic "key" string */
23 long str_useful; /* is this search optimization effective? */
24 ARG *str_args; /* list of args for interpreted string */
25 HASH *str_hash; /* string represents an assoc array (stab?) */
26 ARRAY *str_array; /* string represents an array */
27 CMD *str_cmd; /* command for this source line */
29 STRLEN str_cur; /* length of str_ptr as a C string */
30 STR *str_magic; /* while free, link to next free str */
31 /* while in use, ptr to "key" for magic items */
32 char str_pok; /* state of str_ptr */
33 char str_nok; /* state of str_nval */
34 unsigned char str_rare; /* used by search strings */
35 unsigned char str_state; /* one of SS_* below */
36 /* also used by search strings for backoff */
38 bool str_tainted; /* 1 if possibly under control of $< */
42 struct stab { /* should be identical, except for str_ptr */
43 STBP * str_ptr; /* pointer to malloced string */
44 STRLEN str_len; /* allocated size */
46 double str_nval; /* numeric value, if any */
47 STAB *str_stab; /* magic stab for magic "key" string */
48 long str_useful; /* is this search optimization effective? */
49 ARG *str_args; /* list of args for interpreted string */
50 HASH *str_hash; /* string represents an assoc array (stab?) */
51 ARRAY *str_array; /* string represents an array */
52 CMD *str_cmd; /* command for this source line */
54 STRLEN str_cur; /* length of str_ptr as a C string */
55 STR *str_magic; /* while free, link to next free str */
56 /* while in use, ptr to "key" for magic items */
57 char str_pok; /* state of str_ptr */
58 char str_nok; /* state of str_nval */
59 unsigned char str_rare; /* used by search strings */
60 unsigned char str_state; /* one of SS_* below */
61 /* also used by search strings for backoff */
63 bool str_tainted; /* 1 if possibly under control of $< */
67 /* some extra info tacked to some lvalue strings */
75 /* These are the values of str_pok: */
76 #define SP_VALID 1 /* str_ptr is valid */
77 #define SP_FBM 2 /* string was compiled for fbm search */
78 #define SP_STUDIED 4 /* string was studied */
79 #define SP_CASEFOLD 8 /* case insensitive fbm search */
80 #define SP_INTRP 16 /* string was compiled for interping */
81 #define SP_TAIL 32 /* fbm string is tail anchored: /foo$/ */
82 #define SP_MULTI 64 /* symbol table entry probably isn't a typo */
83 #define SP_TEMP 128 /* string slated to die, so can be plundered */
85 #define Nullstr Null(STR*)
87 /* These are the values of str_state: */
88 #define SS_NORM 0 /* normal string */
89 #define SS_INCR 1 /* normal string, incremented ptr */
90 #define SS_SARY 2 /* array on save stack */
91 #define SS_SHASH 3 /* associative array on save stack */
92 #define SS_SINT 4 /* integer on save stack */
93 #define SS_SLONG 5 /* long on save stack */
94 #define SS_SSTRP 6 /* STR* on save stack */
95 #define SS_SHPTR 7 /* HASH* on save stack */
96 #define SS_SNSTAB 8 /* non-stab on save stack */
97 #define SS_SCSV 9 /* callsave structure on save stack */
98 #define SS_SAPTR 10 /* ARRAY* on save stack */
99 #define SS_HASH 253 /* carrying an hash */
100 #define SS_ARY 254 /* carrying an array */
101 #define SS_FREE 255 /* in free list */
102 /* str_state may have any value 0-255 when used to hold fbm pattern, in which */
103 /* case it indicates offset to rarest character in screaminstr key */
105 /* the following macro updates any magic values this str is associated with */
109 (x)->str_tainted |= tainted; \
110 if ((x)->str_magic) \
111 stabset((x)->str_magic,(x))
114 if ((x)->str_magic) \
115 stabset((x)->str_magic,(x))
118 #define STR_SSET(dst,src) if (dst != src) str_sset(dst,src)
121 EXT int tmps_max INIT(-1);
122 EXT int tmps_base INIT(-1);