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authorRomain Forlot <romain.forlot@iot.bzh>2017-10-23 18:44:34 +0200
committerRomain Forlot <romain.forlot@iot.bzh>2017-12-14 11:00:25 +0100
commit01650b71c92a67807e346bfff655c59df58f2bfd (patch)
tree1e42fb8a6aef0cd70c71b048ae79d2d00a4b27c9 /3rdparty/lua/src/lstring.c
parent8df3e437f941912067231250ff5695b8a3a7fd92 (diff)
Remove external 3rdparty library
Downloaded at build time. Change-Id: If15e9bcb4cc7d09cec1837a0ad62e4a3c6beb4e1 Signed-off-by: Romain Forlot <romain.forlot@iot.bzh>
Diffstat (limited to '3rdparty/lua/src/lstring.c')
-rw-r--r--3rdparty/lua/src/lstring.c248
1 files changed, 0 insertions, 248 deletions
diff --git a/3rdparty/lua/src/lstring.c b/3rdparty/lua/src/lstring.c
deleted file mode 100644
index 9351766..0000000
--- a/3rdparty/lua/src/lstring.c
+++ /dev/null
@@ -1,248 +0,0 @@
-/*
-** $Id: lstring.c,v 2.56 2015/11/23 11:32:51 roberto Exp $
-** String table (keeps all strings handled by Lua)
-** See Copyright Notice in lua.h
-*/
-
-#define lstring_c
-#define LUA_CORE
-
-#include "lprefix.h"
-
-
-#include <string.h>
-
-#include "lua.h"
-
-#include "ldebug.h"
-#include "ldo.h"
-#include "lmem.h"
-#include "lobject.h"
-#include "lstate.h"
-#include "lstring.h"
-
-
-#define MEMERRMSG "not enough memory"
-
-
-/*
-** 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->u.lnglen;
- lua_assert(a->tt == LUA_TLNGSTR && b->tt == LUA_TLNGSTR);
- return (a == b) || /* same instance or... */
- ((len == b->u.lnglen) && /* equal length and ... */
- (memcmp(getstr(a), getstr(b), len) == 0)); /* equal contents */
-}
-
-
-unsigned int luaS_hash (const char *str, size_t l, unsigned int seed) {
- unsigned int h = seed ^ cast(unsigned int, l);
- size_t step = (l >> LUAI_HASHLIMIT) + 1;
- for (; l >= step; l -= step)
- h ^= ((h<<5) + (h>>2) + cast_byte(str[l - 1]));
- return h;
-}
-
-
-unsigned int luaS_hashlongstr (TString *ts) {
- lua_assert(ts->tt == LUA_TLNGSTR);
- if (ts->extra == 0) { /* no hash? */
- ts->hash = luaS_hash(getstr(ts), ts->u.lnglen, ts->hash);
- ts->extra = 1; /* now it has its hash */
- }
- return ts->hash;
-}
-
-
-/*
-** resizes the string table
-*/
-void luaS_resize (lua_State *L, int newsize) {
- int i;
- stringtable *tb = &G(L)->strt;
- if (newsize > tb->size) { /* grow table if needed */
- luaM_reallocvector(L, tb->hash, tb->size, newsize, TString *);
- for (i = tb->size; i < newsize; i++)
- tb->hash[i] = NULL;
- }
- for (i = 0; i < tb->size; i++) { /* rehash */
- TString *p = tb->hash[i];
- tb->hash[i] = NULL;
- while (p) { /* for each node in the list */
- TString *hnext = p->u.hnext; /* save next */
- unsigned int h = lmod(p->hash, newsize); /* new position */
- p->u.hnext = tb->hash[h]; /* chain it */
- tb->hash[h] = p;
- p = hnext;
- }
- }
- if (newsize < tb->size) { /* shrink table if needed */
- /* vanishing slice should be empty */
- lua_assert(tb->hash[newsize] == NULL && tb->hash[tb->size - 1] == NULL);
- luaM_reallocvector(L, tb->hash, tb->size, newsize, TString *);
- }
- tb->size = newsize;
-}
-
-
-/*
-** Clear API string cache. (Entries cannot be empty, so fill them with
-** a non-collectable string.)
-*/
-void luaS_clearcache (global_State *g) {
- int i, j;
- for (i = 0; i < STRCACHE_N; i++)
- for (j = 0; j < STRCACHE_M; j++) {
- if (iswhite(g->strcache[i][j])) /* will entry be collected? */
- g->strcache[i][j] = g->memerrmsg; /* replace it with something fixed */
- }
-}
-
-
-/*
-** Initialize the string table and the string cache
-*/
-void luaS_init (lua_State *L) {
- global_State *g = G(L);
- int i, j;
- luaS_resize(L, MINSTRTABSIZE); /* initial size of string table */
- /* pre-create memory-error message */
- g->memerrmsg = luaS_newliteral(L, MEMERRMSG);
- luaC_fix(L, obj2gco(g->memerrmsg)); /* it should never be collected */
- for (i = 0; i < STRCACHE_N; i++) /* fill cache with valid strings */
- for (j = 0; j < STRCACHE_M; j++)
- g->strcache[i][j] = g->memerrmsg;
-}
-
-
-
-/*
-** creates a new string object
-*/
-static TString *createstrobj (lua_State *L, size_t l, int tag, unsigned int h) {
- TString *ts;
- GCObject *o;
- size_t totalsize; /* total size of TString object */
- totalsize = sizelstring(l);
- o = luaC_newobj(L, tag, totalsize);
- ts = gco2ts(o);
- ts->hash = h;
- ts->extra = 0;
- getstr(ts)[l] = '\0'; /* ending 0 */
- return ts;
-}
-
-
-TString *luaS_createlngstrobj (lua_State *L, size_t l) {
- TString *ts = createstrobj(L, l, LUA_TLNGSTR, G(L)->seed);
- ts->u.lnglen = l;
- return ts;
-}
-
-
-void luaS_remove (lua_State *L, TString *ts) {
- stringtable *tb = &G(L)->strt;
- TString **p = &tb->hash[lmod(ts->hash, tb->size)];
- while (*p != ts) /* find previous element */
- p = &(*p)->u.hnext;
- *p = (*p)->u.hnext; /* remove element from its list */
- tb->nuse--;
-}
-
-
-/*
-** 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) {
- TString *ts;
- global_State *g = G(L);
- unsigned int h = luaS_hash(str, l, g->seed);
- TString **list = &g->strt.hash[lmod(h, g->strt.size)];
- lua_assert(str != NULL); /* otherwise 'memcmp'/'memcpy' are undefined */
- for (ts = *list; ts != NULL; ts = ts->u.hnext) {
- if (l == ts->shrlen &&
- (memcmp(str, getstr(ts), l * sizeof(char)) == 0)) {
- /* found! */
- if (isdead(g, ts)) /* dead (but not collected yet)? */
- changewhite(ts); /* resurrect it */
- return ts;
- }
- }
- if (g->strt.nuse >= g->strt.size && g->strt.size <= MAX_INT/2) {
- luaS_resize(L, g->strt.size * 2);
- list = &g->strt.hash[lmod(h, g->strt.size)]; /* recompute with new size */
- }
- ts = createstrobj(L, l, LUA_TSHRSTR, h);
- memcpy(getstr(ts), str, l * sizeof(char));
- ts->shrlen = cast_byte(l);
- ts->u.hnext = *list;
- *list = ts;
- g->strt.nuse++;
- return ts;
-}
-
-
-/*
-** 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 {
- TString *ts;
- if (l >= (MAX_SIZE - sizeof(TString))/sizeof(char))
- luaM_toobig(L);
- ts = luaS_createlngstrobj(L, l);
- memcpy(getstr(ts), str, l * sizeof(char));
- return ts;
- }
-}
-
-
-/*
-** Create or reuse a zero-terminated string, first checking in the
-** cache (using the string address as a key). The cache can contain
-** only zero-terminated strings, so it is safe to use 'strcmp' to
-** check hits.
-*/
-TString *luaS_new (lua_State *L, const char *str) {
- unsigned int i = point2uint(str) % STRCACHE_N; /* hash */
- int j;
- TString **p = G(L)->strcache[i];
- for (j = 0; j < STRCACHE_M; j++) {
- if (strcmp(str, getstr(p[j])) == 0) /* hit? */
- return p[j]; /* that is it */
- }
- /* normal route */
- for (j = STRCACHE_M - 1; j > 0; j--)
- p[j] = p[j - 1]; /* move out last element */
- /* new element is first in the list */
- p[0] = luaS_newlstr(L, str, strlen(str));
- return p[0];
-}
-
-
-Udata *luaS_newudata (lua_State *L, size_t s) {
- Udata *u;
- GCObject *o;
- if (s > MAX_SIZE - sizeof(Udata))
- luaM_toobig(L);
- o = luaC_newobj(L, LUA_TUSERDATA, sizeludata(s));
- u = gco2u(o);
- u->len = s;
- u->metatable = NULL;
- setuservalue(L, u, luaO_nilobject);
- return u;
-}
-