[Lua] Add keyword warnings for Lua keywords and Basic Functions.

Lib/lua/lua.swg

@@ -9,8 +9,9 @@
  *                          includes
  * ----------------------------------------------------------------------------- */
 
-%include <luatypemaps.swg>          /* The typemaps */
+%include <luatypemaps.swg>         /* The typemaps */
 %include <luaruntime.swg>          /* The runtime stuff */
+%include <luakw.swg>               /* Warnings for Lua keywords */
 
 //%include <typemaps/swigmacros.swg>
 /* -----------------------------------------------------------------------------

Lib/lua/luakw.swg

@@ -0,0 +1,67 @@
+/*
+  Warnings for Lua keywords, built-in names and bad names.
+*/
+
+#define LUAKW(x) %keywordwarn("'" `x` "' is a Lua keyword, renaming to 'c_" `x` "'", rename="c_%s")  `x`
+#define LUABN(x) %namewarn(%warningmsg(SWIGWARN_PARSE_BUILTIN_NAME, "'" `x` "' conflicts with a basic function in Lua"), %$not %$ismember)  `x`
+
+/*
+  Warnings for Lua keywords 
+  http://www.lua.org/manual/5.2/manual.html#3.1
+*/
+
+LUAKW(and);
+LUAKW(break);
+LUAKW(do);
+LUAKW(else);
+LUAKW(elseif);
+LUAKW(end);
+LUAKW(false);
+LUAKW(for);
+LUAKW(function);
+LUAKW(goto);
+LUAKW(if);
+LUAKW(in);
+LUAKW(local);
+LUAKW(nil);
+LUAKW(not);
+LUAKW(or);
+LUAKW(repeat);
+LUAKW(return);
+LUAKW(then);
+LUAKW(true);
+LUAKW(until);
+LUAKW(while);
+
+/*
+  Basic functions
+  http://www.lua.org/manual/5.2/manual.html#6.1
+*/ 
+
+LUABN(assert);
+LUABN(collectgarbage);
+LUABN(dofile);
+LUABN(error);
+LUABN(_G); // Not actually a function
+LUABN(getmetatable);
+LUABN(ipairs);
+LUABN(load);
+LUABN(loadfile);
+LUABN(next);
+LUABN(pairs);
+LUABN(pcall);
+LUABN(print);
+LUABN(rawequal);
+LUABN(rawget);
+LUABN(rawlen);
+LUABN(rawset);
+LUABN(select);
+LUABN(setmetatable);
+LUABN(tonumber);
+LUABN(tostring);
+LUABN(type);
+LUABN(_VERSION); // Not actually a function
+LUABN(xpcall);
+
+#undef LUABN
+#undef LUAKW