bool ClassNameTreeContains(const ClassNameNode& node, const std::string& name)
{
// if the node is the name, return true
if(node.name() == name) return true;
// else search in parents
bool bContains = false;
for(size_t i = 0; i < node.num_base_classes(); ++i)
bContains |= ClassNameTreeContains(node.base_class(i), name);
// return if found in parents
return bContains;
}
int UGIsBaseClass(lua_State *L)
{
const char* derivClass = lua_tostring(L, -1);
const char* baseClass = lua_tostring(L, -2);
if(!derivClass || !baseClass)
UG_THROW("In UGIsBaseClass: invalid class names passed as arguments.");
luaL_getmetatable(L, derivClass);
if(!lua_isnil(L, -1))
{
lua_pushstring(L, "class_name_node");
lua_rawget(L, -2);
const ug::bridge::ClassNameNode* classNameNode = (const ug::bridge::ClassNameNode*) lua_touserdata(L, -1);
lua_pop(L, 2);
if(classNameNode)
{
if(!classNameNode->empty())
{
if(ClassNameTreeContains(*classNameNode, baseClass))
{
lua_pushboolean(L, true);
return 1;
}
}
lua_pushboolean(L, false);
return 1;
}
else UG_THROW("In UGIsBaseClasse: Something wrong with ClassNameNode.");
}
else{
UG_THROW("In UGIsBaseClass: Cannot find metatable for: "<< derivClass);
}
return 0;
}
