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

CHANGES.current

@@ -5,6 +5,9 @@ See the RELEASENOTES file for a summary of changes in each release.
 Version 3.0.0 (in progress)
 ============================
 
+2014-02-19: olly
+	    [Lua] Add keyword warnings for Lua keywords and Basic Functions.
+
 2014-02-19: olly
 	    -Wallkw now includes keywords for all languages with keyword
 	    warnings (previously Go and R were missing).

Examples/test-suite/lua/keyword_rename_runme.lua

@@ -7,10 +7,6 @@ local env = _ENV -- Lua 5.2
 if not env then env = getfenv () end -- Lua 5.1
 setmetatable(env, {__index=function (t,i) error("undefined global variable `"..i.."'",2) end})
 
-
--- assert(kn.end(5) == 5) -- Curretly  SWIG/Lua doesn't rename keywords
--- assert(kn.nil(7) == 7)
-
--- But you can always access wrongly named members using string constants
-assert(kn["end"](5) == 5)
-assert(kn["nil"](7) == 7)
+-- Check renaming of Lua keywords
+assert(kn.c_end(5) == 5)
+assert(kn.c_nil(7) == 7)

Lib/allkw.swg

@@ -21,6 +21,7 @@
 %include <d/dkw.swg>
 %include <go/gokw.swg>
 %include <java/javakw.swg>
+%include <lua/luakw.swg>
 %include <ocaml/ocamlkw.swg>
 %include <perl5/perlkw.swg>
 %include <php/phpkw.swg>

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