From 475e6c5352c3daecdd54fe2346b3c3b07f17a791 Mon Sep 17 00:00:00 2001
From: Roberto Ierusalimschy <roberto@inf.puc-rio.br>
Date: Mon, 24 Oct 2011 14:53:05 -0200
Subject: 'lua_setglobal/lua_getglobal' implemented as functions to avoid
 problems with stack indices (e.g., lua_getglobal(L, lua_tostring(L, -1)) )

---
 lapi.c | 26 +++++++++++++++++++++++++-
 1 file changed, 25 insertions(+), 1 deletion(-)

(limited to 'lapi.c')

diff --git a/lapi.c b/lapi.c
index ab3e92ff..afa86ff8 100644
--- a/lapi.c
+++ b/lapi.c
@@ -1,5 +1,5 @@
 /*
-** $Id: lapi.c,v 2.153 2011/09/30 12:43:17 roberto Exp roberto $
+** $Id: lapi.c,v 2.154 2011/10/24 14:54:05 roberto Exp roberto $
 ** Lua API
 ** See Copyright Notice in lua.h
 */
@@ -596,6 +596,17 @@ LUA_API int lua_pushthread (lua_State *L) {
 */
 
 
+LUA_API void lua_getglobal (lua_State *L, const char *var) {
+  Table *reg = hvalue(&G(L)->l_registry);
+  const TValue *gt;  /* global table */
+  lua_lock(L);
+  gt = luaH_getint(reg, LUA_RIDX_GLOBALS);
+  setsvalue2s(L, L->top++, luaS_new(L, var));
+  luaV_gettable(L, gt, L->top - 1, L->top - 1);
+  lua_unlock(L);
+}
+
+
 LUA_API void lua_gettable (lua_State *L, int idx) {
   StkId t;
   lua_lock(L);
@@ -714,6 +725,19 @@ LUA_API void lua_getuservalue (lua_State *L, int idx) {
 */
 
 
+LUA_API void lua_setglobal (lua_State *L, const char *var) {
+  Table *reg = hvalue(&G(L)->l_registry);
+  const TValue *gt;  /* global table */
+  lua_lock(L);
+  api_checknelems(L, 1);
+  gt = luaH_getint(reg, LUA_RIDX_GLOBALS);
+  setsvalue2s(L, L->top++, luaS_new(L, var));
+  luaV_settable(L, gt, L->top - 1, L->top - 2);
+  L->top -= 2;  /* pop value and key */
+  lua_unlock(L);
+}
+
+
 LUA_API void lua_settable (lua_State *L, int idx) {
   StkId t;
   lua_lock(L);
-- 
cgit v1.2.3-55-g6feb