ability to push an arbitrary integer as light userdata

lua51/golua.c

@@ -65,6 +65,15 @@ void clua_pushgofunction(lua_State* L, unsigned int fid)
 	lua_setmetatable(L, -2);
 }
 
+void clua_pushlightinteger(lua_State* L, unsigned int n)
+{
+  lua_pushlightuserdata(L, (void*)n);
+}
+
+int clua_tolightinteger(lua_State *L, unsigned int index)
+{
+  return (int)lua_touserdata(L, index);
+}
 
 void clua_setgostate(lua_State* L, GoInterface gi)
 {

lua51/golua.h

@@ -6,6 +6,8 @@ void clua_initstate(lua_State* L);
 
 unsigned int clua_togofunction(lua_State* L, int index);
 void clua_pushgofunction(lua_State* L, unsigned int fid);
+void clua_pushlightinteger(lua_State* L, int n);
+int clua_tolightinteger(lua_State* L, int index);
 void clua_setgostate(lua_State* L, GoInterface gostate);
 GoInterface* clua_getgostate(lua_State* L);
 GoInterface clua_atpanic(lua_State* L, unsigned int panicf_id);

lua51/lauxlib.go

@@ -62,15 +62,15 @@ func CheckUdata(L *State, narg int, tname string) unsafe.Pointer {
 //true if no errors, false otherwise
 func (L *State) DoFile(filename string) bool {
 	if L.LoadFile(filename) == 0 {
-		return PCall(L,0,LUA_MULTRET,0) == 0;
+		return L.PCall(0,LUA_MULTRET,0) == 0;
 	}
 	return false;
 }
 
 //true if no errors, false otherwise
 func (L *State) DoString(str string) bool {
 	if L.LoadString(str) == 0 {
-		return PCall(L,0,LUA_MULTRET,0) == 0;
+		return L.PCall(0,LUA_MULTRET,0) == 0;
 	}
 	return false;
 }

lua51/lua.go

@@ -129,6 +129,11 @@ func (L *State) PushGoFunction(f GoFunction) {
 }
 
 
+func (L *State) PushLightInteger(n int) {
+	C.clua_pushlightinteger(L.s, C.int(n))
+}
+
+
 //push pointer by value, as a value - we don't impact lifetime
 func (L *State) PushLightUserdata(ud *interface{}) {
 	//push
@@ -300,23 +305,23 @@ func (L *State) NewTable() {
 }
 
 
-func NewThread(L* State) *State {
+func (L *State) NewThread() *State {
 	//TODO: call newState with result from C.lua_newthread and return it
 	//TODO: should have same lists as parent
 	//		but may complicate gc
 	s := C.lua_newthread(L.s);
 	return &State{s,nil,nil};
 }
 
-func Next(L *State, index int) int {
+func (L *State) Next(index int) int {
 	return int(C.lua_next(L.s,C.int(index)));
 }
 
-func ObjLen(L *State, index int) uint {
+func (L *State) ObjLen(index int) uint {
 	return uint(C.lua_objlen(L.s,C.int(index)));
 }
 
-func PCall(L *State, nargs int, nresults int, errfunc int) int {
+func (L *State) PCall(nargs int, nresults int, errfunc int) int {
 	return int(C.lua_pcall(L.s, C.int(nargs), C.int(nresults), C.int(errfunc)));
 }
 
@@ -464,6 +469,10 @@ func (L *State) ToUserdata(index int) unsafe.Pointer {
 	return unsafe.Pointer(C.lua_touserdata(L.s,C.int(index)));
 }
 
+func (L *State) ToLightInteger(index int) int {
+	return int(C.clua_tolightinteger(L.s, C.int(index)))
+}
+
 func (L *State) Type(index int) int {
 	return int(C.lua_type(L.s, C.int(index)));
 }