1 /* 2 ** String handling. 3 ** Copyright (C) 2005-2021 Mike Pall. See Copyright Notice in luajit.h 4 */ 5 6 #ifndef _LJ_STR_H 7 #define _LJ_STR_H 8 9 #include <stdarg.h> 10 11 #include "lj_obj.h" 12 13 /* String helpers. */ 14 LJ_FUNC int32_t LJ_FASTCALL lj_str_cmp(GCstr *a, GCstr *b); 15 LJ_FUNC const char *lj_str_find(const char *s, const char *f, 16 MSize slen, MSize flen); 17 LJ_FUNC int lj_str_haspattern(GCstr *s); 18 19 /* String interning. */ 20 LJ_FUNC void lj_str_resize(lua_State *L, MSize newmask); 21 LJ_FUNCA GCstr *lj_str_new(lua_State *L, const char *str, size_t len); 22 LJ_FUNC void LJ_FASTCALL lj_str_free(global_State *g, GCstr *s); 23 LJ_FUNC void LJ_FASTCALL lj_str_init(lua_State *L); 24 #define lj_str_freetab(g) \ 25 (lj_mem_freevec(g, g->str.tab, g->str.mask+1, GCRef)) 26 27 #define lj_str_newz(L, s) (lj_str_new(L, s, strlen(s))) 28 #define lj_str_newlit(L, s) (lj_str_new(L, "" s, sizeof(s)-1)) 29 #define lj_str_size(len) (sizeof(GCstr) + (((len)+4) & ~(MSize)3)) 30 31 #ifdef LJ_HAS_OPTIMISED_HASH 32 typedef StrHash (*str_sparse_hashfn) (uint64_t, const char *, MSize); 33 extern str_sparse_hashfn hash_sparse; 34 35 #if LUAJIT_SECURITY_STRHASH 36 typedef StrHash (*str_dense_hashfn) (uint64_t, StrHash, const char *, MSize); 37 extern str_dense_hashfn hash_dense; 38 #endif 39 40 extern void str_hash_init_sse42 (void); 41 #endif 42 43 #endif 44