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1866
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1 /*
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2 ** $Id: lstring.h,v 1.49 2012/02/01 21:57:15 roberto Exp $
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3 ** String table (keep all strings handled by Lua)
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4 ** See Copyright Notice in lua.h
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5 */
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6
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7 #ifndef lstring_h
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8 #define lstring_h
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9
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10 #include "lgc.h"
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11 #include "lobject.h"
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12 #include "lstate.h"
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13
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14
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15 #define sizestring(s) (sizeof(union TString)+((s)->len+1)*sizeof(char))
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16
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17 #define sizeudata(u) (sizeof(union Udata)+(u)->len)
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18
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19 #define luaS_newliteral(L, s) (luaS_newlstr(L, "" s, \
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20 (sizeof(s)/sizeof(char))-1))
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21
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22 #define luaS_fix(s) l_setbit((s)->tsv.marked, FIXEDBIT)
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23
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24
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25 /*
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26 ** test whether a string is a reserved word
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27 */
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28 #define isreserved(s) ((s)->tsv.tt == LUA_TSHRSTR && (s)->tsv.extra > 0)
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29
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30
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31 /*
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32 ** equality for short strings, which are always internalized
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33 */
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34 #define eqshrstr(a,b) check_exp((a)->tsv.tt == LUA_TSHRSTR, (a) == (b))
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35
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36
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37 LUAI_FUNC unsigned int luaS_hash (const char *str, size_t l, unsigned int seed);
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38 LUAI_FUNC int luaS_eqlngstr (TString *a, TString *b);
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39 LUAI_FUNC int luaS_eqstr (TString *a, TString *b);
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40 LUAI_FUNC void luaS_resize (lua_State *L, int newsize);
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41 LUAI_FUNC Udata *luaS_newudata (lua_State *L, size_t s, Table *e);
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42 LUAI_FUNC TString *luaS_newlstr (lua_State *L, const char *str, size_t l);
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43 LUAI_FUNC TString *luaS_new (lua_State *L, const char *str);
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44
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45
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46 #endif
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