-/* $Header: str.h,v 2.0 88/06/05 00:11:11 root Exp $
+/* $RCSfile: str.h,v $$Revision: 4.0.1.2 $$Date: 91/06/07 11:58:33 $
+ *
+ * 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 2.0 88/06/05 00:11:11 root
- * Baseline version 2.0.
+ * 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 */
- double str_nval; /* numeric value, if any */
- int str_len; /* allocated size */
- int str_cur; /* length of str_ptr as a C string */
+ STRLEN str_len; /* allocated size */
union {
- STR *str_next; /* while free, link to next free str */
- STAB *str_magic; /* while in use, ptr to magic stab, if any */
- } str_link;
+ 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 */
- char str_rare; /* used by search strings */
- char str_prev; /* also used by search strings */
+ 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_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 */
-#define STABSET(x) (x->str_link.str_magic && stabset(x->str_link.str_magic,x))
+#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);
char *str_2ptr();
double str_2num();
-STR *str_static();
+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();
+STRLEN str_len();
projects / p5sagit/p5-mst-13.2.git / blobdiff