lstring.h 1.6 KB

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  1. /*
  2. ** $Id: lstring.h $
  3. ** String table (keep all strings handled by Lua)
  4. ** See Copyright Notice in lua.h
  5. */
  6. #ifndef lstring_h
  7. #define lstring_h
  8. #include "lgc.h"
  9. #include "lobject.h"
  10. #include "lstate.h"
  11. /*
  12. ** Memory-allocation error message must be preallocated (it cannot
  13. ** be created after memory is exhausted)
  14. */
  15. #define MEMERRMSG "not enough memory"
  16. /*
  17. ** Size of a TString: Size of the header plus space for the string
  18. ** itself (including final '\0').
  19. */
  20. #define sizelstring(l) (offsetof(TString, contents) + ((l) + 1) * sizeof(char))
  21. #define luaS_newliteral(L, s) (luaS_newlstr(L, "" s, \
  22. (sizeof(s)/sizeof(char))-1))
  23. /*
  24. ** test whether a string is a reserved word
  25. */
  26. #define isreserved(s) ((s)->tt == LUA_VSHRSTR && (s)->extra > 0)
  27. /*
  28. ** equality for short strings, which are always internalized
  29. */
  30. #define eqshrstr(a,b) check_exp((a)->tt == LUA_VSHRSTR, (a) == (b))
  31. LUAI_FUNC unsigned int luaS_hash (const char *str, size_t l, unsigned int seed);
  32. LUAI_FUNC unsigned int luaS_hashlongstr (TString *ts);
  33. LUAI_FUNC int luaS_eqlngstr (TString *a, TString *b);
  34. LUAI_FUNC void luaS_resize (lua_State *L, int newsize);
  35. LUAI_FUNC void luaS_clearcache (global_State *g);
  36. LUAI_FUNC void luaS_init (lua_State *L);
  37. LUAI_FUNC void luaS_remove (lua_State *L, TString *ts);
  38. LUAI_FUNC Udata *luaS_newudata (lua_State *L, size_t s, int nuvalue);
  39. LUAI_FUNC TString *luaS_newlstr (lua_State *L, const char *str, size_t l);
  40. LUAI_FUNC TString *luaS_new (lua_State *L, const char *str);
  41. LUAI_FUNC TString *luaS_createlngstrobj (lua_State *L, size_t l);
  42. #endif