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External strings

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Strings can use external buffers to store their contents.
This commit is contained in:
Roberto Ierusalimschy
2023-11-09 17:05:42 -03:00
parent 7f4906f565
commit 024f9064f1
9 changed files with 195 additions and 14 deletions
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10
lstring.h
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@@ -26,12 +26,6 @@
#define sizestrshr(l) \
(offsetof(TString, contents) + ((l) + 1) * sizeof(char))
/*
** Size of a long TString: Size of the header plus space for the string
** itself (including final '\0').
*/
#define sizestrlng(l) (sizeof(TString) + ((l) + 1) * sizeof(char))
#define luaS_newliteral(L, s) (luaS_newlstr(L, "" s, \
(sizeof(s)/sizeof(char))-1))
@@ -60,6 +54,8 @@ LUAI_FUNC Udata *luaS_newudata (lua_State *L, size_t s, int nuvalue);
LUAI_FUNC TString *luaS_newlstr (lua_State *L, const char *str, size_t l);
LUAI_FUNC TString *luaS_new (lua_State *L, const char *str);
LUAI_FUNC TString *luaS_createlngstrobj (lua_State *L, size_t l);
LUAI_FUNC TString *luaS_newextlstr (lua_State *L,
const char *s, size_t len, lua_Alloc falloc, void *ud);
LUAI_FUNC size_t luaS_sizelngstr (size_t len, int kind);
#endif