External strings

Strings can use external buffers to store their contents.

1 files changed, 3 insertions, 7 deletions

diff --git a/lstring.h b/lstring.h
index 069e64b7..e321bd43 100644
--- a/lstring.h
+++ b/lstring.h
@@ -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