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-rw-r--r--src/lib/lua/lstring.c184
1 files changed, 0 insertions, 184 deletions
diff --git a/src/lib/lua/lstring.c b/src/lib/lua/lstring.c
deleted file mode 100644
index a471631ea07..00000000000
--- a/src/lib/lua/lstring.c
+++ /dev/null
@@ -1,184 +0,0 @@
-/*
-** $Id: lstring.c,v 2.26.1.1 2013/04/12 18:48:47 roberto Exp $
-** String table (keeps all strings handled by Lua)
-** See Copyright Notice in lua.h
-*/
-
-
-#include <string.h>
-
-#define lstring_c
-#define LUA_CORE
-
-#include "lua.h"
-
-#include "lmem.h"
-#include "lobject.h"
-#include "lstate.h"
-#include "lstring.h"
-
-
-/*
-** Lua will use at most ~(2^LUAI_HASHLIMIT) bytes from a string to
-** compute its hash
-*/
-#if !defined(LUAI_HASHLIMIT)
-#define LUAI_HASHLIMIT 5
-#endif
-
-
-/*
-** equality for long strings
-*/
-int luaS_eqlngstr (TString *a, TString *b) {
- size_t len = a->tsv.len;
- lua_assert(a->tsv.tt == LUA_TLNGSTR && b->tsv.tt == LUA_TLNGSTR);
- return (a == b) || /* same instance or... */
- ((len == b->tsv.len) && /* equal length and ... */
- (memcmp(getstr(a), getstr(b), len) == 0)); /* equal contents */
-}
-
-
-/*
-** equality for strings
-*/
-int luaS_eqstr (TString *a, TString *b) {
- return (a->tsv.tt == b->tsv.tt) &&
- (a->tsv.tt == LUA_TSHRSTR ? eqshrstr(a, b) : luaS_eqlngstr(a, b));
-}
-
-
-unsigned int luaS_hash (const char *str, size_t l, unsigned int seed) {
- unsigned int h = seed ^ cast(unsigned int, l);
- size_t l1;
- size_t step = (l >> LUAI_HASHLIMIT) + 1;
- for (l1 = l; l1 >= step; l1 -= step)
- h = h ^ ((h<<5) + (h>>2) + cast_byte(str[l1 - 1]));
- return h;
-}
-
-
-/*
-** resizes the string table
-*/
-void luaS_resize (lua_State *L, int newsize) {
- int i;
- stringtable *tb = &G(L)->strt;
- /* cannot resize while GC is traversing strings */
- luaC_runtilstate(L, ~bitmask(GCSsweepstring));
- if (newsize > tb->size) {
- luaM_reallocvector(L, tb->hash, tb->size, newsize, GCObject *);
- for (i = tb->size; i < newsize; i++) tb->hash[i] = NULL;
- }
- /* rehash */
- for (i=0; i<tb->size; i++) {
- GCObject *p = tb->hash[i];
- tb->hash[i] = NULL;
- while (p) { /* for each node in the list */
- GCObject *next = gch(p)->next; /* save next */
- unsigned int h = lmod(gco2ts(p)->hash, newsize); /* new position */
- gch(p)->next = tb->hash[h]; /* chain it */
- tb->hash[h] = p;
- resetoldbit(p); /* see MOVE OLD rule */
- p = next;
- }
- }
- if (newsize < tb->size) {
- /* shrinking slice must be empty */
- lua_assert(tb->hash[newsize] == NULL && tb->hash[tb->size - 1] == NULL);
- luaM_reallocvector(L, tb->hash, tb->size, newsize, GCObject *);
- }
- tb->size = newsize;
-}
-
-
-/*
-** creates a new string object
-*/
-static TString *createstrobj (lua_State *L, const char *str, size_t l,
- int tag, unsigned int h, GCObject **list) {
- TString *ts;
- size_t totalsize; /* total size of TString object */
- totalsize = sizeof(TString) + ((l + 1) * sizeof(char));
- ts = &luaC_newobj(L, tag, totalsize, list, 0)->ts;
- ts->tsv.len = l;
- ts->tsv.hash = h;
- ts->tsv.extra = 0;
- memcpy(ts+1, str, l*sizeof(char));
- ((char *)(ts+1))[l] = '\0'; /* ending 0 */
- return ts;
-}
-
-
-/*
-** creates a new short string, inserting it into string table
-*/
-static TString *newshrstr (lua_State *L, const char *str, size_t l,
- unsigned int h) {
- GCObject **list; /* (pointer to) list where it will be inserted */
- stringtable *tb = &G(L)->strt;
- TString *s;
- if (tb->nuse >= cast(lu_int32, tb->size) && tb->size <= MAX_INT/2)
- luaS_resize(L, tb->size*2); /* too crowded */
- list = &tb->hash[lmod(h, tb->size)];
- s = createstrobj(L, str, l, LUA_TSHRSTR, h, list);
- tb->nuse++;
- return s;
-}
-
-
-/*
-** checks whether short string exists and reuses it or creates a new one
-*/
-static TString *internshrstr (lua_State *L, const char *str, size_t l) {
- GCObject *o;
- global_State *g = G(L);
- unsigned int h = luaS_hash(str, l, g->seed);
- for (o = g->strt.hash[lmod(h, g->strt.size)];
- o != NULL;
- o = gch(o)->next) {
- TString *ts = rawgco2ts(o);
- if (h == ts->tsv.hash &&
- l == ts->tsv.len &&
- (memcmp(str, getstr(ts), l * sizeof(char)) == 0)) {
- if (isdead(G(L), o)) /* string is dead (but was not collected yet)? */
- changewhite(o); /* resurrect it */
- return ts;
- }
- }
- return newshrstr(L, str, l, h); /* not found; create a new string */
-}
-
-
-/*
-** new string (with explicit length)
-*/
-TString *luaS_newlstr (lua_State *L, const char *str, size_t l) {
- if (l <= LUAI_MAXSHORTLEN) /* short string? */
- return internshrstr(L, str, l);
- else {
- if (l + 1 > (MAX_SIZET - sizeof(TString))/sizeof(char))
- luaM_toobig(L);
- return createstrobj(L, str, l, LUA_TLNGSTR, G(L)->seed, NULL);
- }
-}
-
-
-/*
-** new zero-terminated string
-*/
-TString *luaS_new (lua_State *L, const char *str) {
- return luaS_newlstr(L, str, strlen(str));
-}
-
-
-Udata *luaS_newudata (lua_State *L, size_t s, Table *e) {
- Udata *u;
- if (s > MAX_SIZET - sizeof(Udata))
- luaM_toobig(L);
- u = &luaC_newobj(L, LUA_TUSERDATA, sizeof(Udata) + s, NULL, 0)->u;
- u->uv.len = s;
- u->uv.metatable = NULL;
- u->uv.env = e;
- return u;
-}