Re: Compatibility with Lua 5.X
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- Subject: Re: Compatibility with Lua 5.X
- From: "John D. Ramsdell" <ramsdell0@...>
- Date: 2012年2月28日 21:05:10 -0500
In Lua 5.2, I found I had to change the way I loaded standard libraries.
John
--- a/datalog.c
+++ b/datalog.c
@@ -72,7 +72,11 @@ dl_lua(dl_db_t L)
}
static const luaL_Reg lualibs[] = {
+#if LUA_VERSION_NUM < 502
{"", luaopen_base},
+#else
+ {"_G", luaopen_base},
+#endif
{LUA_TABLIBNAME, luaopen_table},
{LUA_STRLIBNAME, luaopen_string},
{NULL, NULL}
@@ -82,11 +86,16 @@ DATALOG_API dl_db_t
dl_open(void)
{
lua_State *L = luaL_newstate();
- const luaL_Reg *lib = lualibs;
- for (; lib->func; lib++) { /* Load libraries used by the */
- lua_pushcfunction(L, lib->func); /* Lua datalog program. */
+ const luaL_Reg *lib = lualibs; /* Load libraries used by the */
+ for (; lib->func; lib++) { /* Lua datalog program. */
+#if LUA_VERSION_NUM < 502
+ lua_pushcfunction(L, lib->func);
lua_pushstring(L, lib->name);
lua_call(L, 1, 0);
+#else
+ luaL_requiref(L, lib->name, lib->func, 1);
+ lua_pop(L, 1); /* remove lib */
+#endif
}
if (dl_lua(L)) /* Load the Lua program. */
return NULL;