void LuaEngine::luaPush(const QVariant& variant)
{
switch (variant.type())
{
case QVariant::Bool:
{
luaPush(variant.toBool());
break;
}
case QVariant::String:
{
luaPush(variant.toString());
break;
}
case QVariant::Int:
{
luaPush(variant.toInt());
break;
}
case QVariant::Map:
{
luaPush(variant.toMap());
break;
}
case QVariant::Hash:
{
luaPush(variant.toHash());
break;
}
default:
break;
}
}
void LuaEngine::luaPush(const QMap<QString, QVariant>& hash)
{
lua_newtable(L);
for (QMap<QString, QVariant>::const_iterator it = hash.constBegin(); it != hash.constEnd(); ++it)
{
luaPush(it.key());
luaPush(it.value());
lua_settable(L, -3);
}
}
int defaultStdFunctionWrapper(lua_State* L, LuaStdFunction& fn) {
try {
return fn(L);
} catch (const std::exception& e) {
luaPush(L, folly::exceptionStr(e));
lua_error(L);
return 0; // unreached
}
}
int TestObject::luaIndex(lua_State* L) {
auto arg = luaGet<folly::StringPiece>(L, 2);
if (arg && *arg == "y") {
luaPush(L, y);
} else {
lua_pushnil(L);
}
return 1;
}
QVariant LuaEngine::invokeFunction(const char* object, const char* method, const QVariantList& arguments /*= QVariantList()*/, QLSCallback callback /*= nullptr*/)
{
int argc = arguments.count();
#ifdef Q_OS_WIN
foreach(const QVariant & argv, arguments)
#else
for (const QVariant & argv : arguments)
#endif
{
luaPush(argv);
}
invokeFunction(std::string(object), std::string(method), argc, 1, callback != nullptr);
QVariant result;
if (lua_isnumber(L, -1))
{
result = luaPopNumber();
}
else if (lua_isstring(L, -1))
{
result = QString(luaPopString().c_str());
}
else if (lua_isuserdata(L, -1))
{
result = (qulonglong)lua_touserdata(L, -1);
}
else if (lua_istable(L, -1))
{
QHash<QString, QVariant> table;
lua_pushnil(L);
while (lua_next(L, -2) != 0)
{
table[lua_tostring(L, -2)] = lua_tostring(L, -1);
lua_pop(L, 1);
}
lua_pop(L, 1); // remove table
result = table;
}
return result;
}
void LuaEngine::luaPush(const QString& string)
{
luaPush(string.toStdString());
}
int TestObject::luaValue(lua_State* L) {
luaPush(L, x);
return 1;
}
int TestObject::luaLen(lua_State* L) {
luaPush(L, 10);
return 1;
}
int TestObjectMethodsOnly::luaValue(lua_State* L) {
luaPush(L, y);
return 1;
}