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POreplacement for luaL_getMetaTable
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  1. POreplacement for luaL_getMetaTable
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    copied!<p>I want to enable Lua-Scripting (Lua 5.1) in my Delphi application. For this purpose I use the header Files of Thomas Lavergne.</p> <p>Now I try to register a userdata type following this example: <a href="http://www.lua.org/pil/28.2.html" rel="nofollow">http://www.lua.org/pil/28.2.html</a></p> <p>At the "new array function" it uses the command *luaL_getmetatable*.</p> <pre><code>static int newarray (lua_State *L) { int n = luaL_checkint(L, 1); size_t nbytes = sizeof(NumArray) + (n - 1)*sizeof(double); NumArray *a = (NumArray *)lua_newuserdata(L, nbytes); luaL_getmetatable(L, "LuaBook.array"); lua_setmetatable(L, -2); a-&gt;size = n; return 1; /* new userdatum is already on the stack */ } </code></pre> <p>Unfortunately the *luaL_getmetatable* Function is marked al old at my header File and commented out. I tried to activate it again but as expected I will get an error because the dll entrancepoint couldn't be found.</p> <p>This is the Delphi-translation of that example (using another non array datatype)</p> <pre><code>Type tMyType = tWhatever; pMyType = ^tMyType; {...} Function newusertype(aState : pLua_State) : LongInt; cdecl; Var NewData : pMyType; Begin Result := 0; NewData := lua_newuserdata(aState, SizeOf(tMyType )); NewData^ := GetInitValue; luaL_getMetaTable(aState, 'myexcample.mytype'); // Error/unknown function lua_setmetatable(aState, -2); Result := 1; End; </code></pre> <p>Now I'm looking for an replacement of luaL_getMetaTable. I haven't found any information about one. In fact I haven't found any information that luaL_getMetaTable is outdated but it seems to be :(.</p>
 

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