1 files changed, 29 insertions, 8 deletions

diff --git a/source/extern/lua/ltm.c b/source/extern/lua/ltm.c
index c38e5c3..0e7c713 100644
--- a/source/extern/lua/ltm.c
+++ b/source/extern/lua/ltm.c
@@ -1,5 +1,5 @@
 /*
-** $Id: ltm.c,v 2.34 2015/03/30 15:42:27 roberto Exp $
+** $Id: ltm.c,v 2.38.1.1 2017/04/19 17:39:34 roberto Exp $
 ** Tag methods
 ** See Copyright Notice in lua.h
 */
@@ -15,7 +15,7 @@
 #include "lua.h"
 
 #include "ldebug.h"
-#include "ldo.h" 
+#include "ldo.h"
 #include "lobject.h"
 #include "lstate.h"
 #include "lstring.h"
@@ -57,7 +57,7 @@ void luaT_init (lua_State *L) {
 ** tag methods
 */
 const TValue *luaT_gettm (Table *events, TMS event, TString *ename) {
-  const TValue *tm = luaH_getstr(events, ename);
+  const TValue *tm = luaH_getshortstr(events, ename);
   lua_assert(event <= TM_EQ);
   if (ttisnil(tm)) {  /* no tag method? */
     events->flags |= cast_byte(1u<<event);  /* cache this fact */
@@ -79,20 +79,41 @@ const TValue *luaT_gettmbyobj (lua_State *L, const TValue *o, TMS event) {
     default:
       mt = G(L)->mt[ttnov(o)];
   }
-  return (mt ? luaH_getstr(mt, G(L)->tmname[event]) : luaO_nilobject);
+  return (mt ? luaH_getshortstr(mt, G(L)->tmname[event]) : luaO_nilobject);
+}
+
+
+/*
+** Return the name of the type of an object. For tables and userdata
+** with metatable, use their '__name' metafield, if present.
+*/
+const char *luaT_objtypename (lua_State *L, const TValue *o) {
+  Table *mt;
+  if ((ttistable(o) && (mt = hvalue(o)->metatable) != NULL) ||
+      (ttisfulluserdata(o) && (mt = uvalue(o)->metatable) != NULL)) {
+    const TValue *name = luaH_getshortstr(mt, luaS_new(L, "__name"));
+    if (ttisstring(name))  /* is '__name' a string? */
+      return getstr(tsvalue(name));  /* use it as type name */
+  }
+  return ttypename(ttnov(o));  /* else use standard type name */
 }
 
 
 void luaT_callTM (lua_State *L, const TValue *f, const TValue *p1,
                   const TValue *p2, TValue *p3, int hasres) {
   ptrdiff_t result = savestack(L, p3);
-  setobj2s(L, L->top++, f);  /* push function (assume EXTRA_STACK) */
-  setobj2s(L, L->top++, p1);  /* 1st argument */
-  setobj2s(L, L->top++, p2);  /* 2nd argument */
+  StkId func = L->top;
+  setobj2s(L, func, f);  /* push function (assume EXTRA_STACK) */
+  setobj2s(L, func + 1, p1);  /* 1st argument */
+  setobj2s(L, func + 2, p2);  /* 2nd argument */
+  L->top += 3;
   if (!hasres)  /* no result? 'p3' is third argument */
     setobj2s(L, L->top++, p3);  /* 3rd argument */
   /* metamethod may yield only when called from Lua code */
-  luaD_call(L, L->top - (4 - hasres), hasres, isLua(L->ci));
+  if (isLua(L->ci))
+    luaD_call(L, func, hasres);
+  else
+    luaD_callnoyield(L, func, hasres);
   if (hasres) {  /* if has result, move it to its place */
     p3 = restorestack(L, result);
     setobjs2s(L, p3, --L->top);