how can i return a table？ i do not want to create map in c/c++(it use frequency)</

It is maybe like this <div class="highlight highlight-source-c++ notranslate posit

how to return a table？ about kaguya HOT 2 OPEN

satoren commented on July 19, 2024

how to return a table？

from kaguya.

Comments (2)

satoren commented on July 19, 2024

It is maybe like this

int luafnc(lua_State* L)
{
int nRows = dataTable.NumOfRows();
int nField = dataTable.NumOfFields();

kaguya::State state(L);
kaguya::LuaTable array= state.newTable(nRows);
for (int i = 0; i < nRows; i++)
{
  kaguya::LuaTable row= state.newTable(0,nField);
  for (int j = 0; j < nField; j++)
  {
    dataTable.SetRow(i);
    row[dataTable.NameOfField(j)] = dataTable.ValueOfField(j);
  }
  array[i + 1] = row;
}
state.pushToStack(array);
return 1;
}

from kaguya.

owen200008 commented on July 19, 2024

in member function, can i write like this?
.addStaticFunction("QueryTotalData", [](CCQLite3DB* pDB, char* pSQL, CCQLite3DBTable* pTable)->kaguya::CCQLite3DBTable_Warp { {
kaguya::CCQLite3DBTable_Warp ret;
if (!pDB->GetDataToTable(pSQL, pTable)) {
return ret;
}
ret.m_pTmpTable = pTable;
return ret;
}})
);
namespace kaguya {
class CCQLite3DBTable_Warp {
public:
CCQLite3DBTable_Warp() {
m_pTmpTable = nullptr;
}
virtual ~CCQLite3DBTable_Warp() {

	}
public:
	CCQLite3DBTable* m_pTmpTable;
};
template<> struct lua_type_traits<CCQLite3DBTable_Warp> {
	typedef CCQLite3DBTable_Warp get_type;
	typedef const CCQLite3DBTable_Warp& push_type;
	static int push(lua_State* l, push_type sTmp) {
		CCQLite3DBTable* s = (CCQLite3DBTable*)sTmp.m_pTmpTable;
		if (s == nullptr)
			lua_pushnil(l);
		else {
			int nRows = s->NumOfRows();
			int nField = s->NumOfFields();
			lua_newtable(l);
			int array_index = lua_gettop(l);
			for (int i = 0; i < nRows; i++) {
				lua_newtable(l);
				int result_index = lua_gettop(l);
				for (int j = 0; j < nField; j++) {
					s->SetRow(i);
					lua_pushstring(l, s->NameOfField(j));
					lua_pushstring(l, s->ValueOfField(j));
					lua_settable(l, result_index);
				}
				lua_settop(l, result_index);
				lua_rawseti(l, array_index, i + 1);
			}
		}
		return 1;
	}
};

}

from kaguya.

Recommend Projects