void TableBuilder::checkParams(const param_list& args) {
if (args.size() == 0)
throw TableBuilderError("Cannot build a table with no columns");
// TODO check if the number of columns in groups is correct
size_t sum = 0;
for (const auto& i : args.groups())
sum += i;
if (sum != args.size())
throw TableBuilderError("Specified Layout does not match number of columns");
}
atable_ptr_t TableBuilder::build(param_list args, const bool compressed) {
if (args.groups().size() == 0)
args.appendGroup(args.size());
checkParams(args);
std::vector<atable_ptr_t> base;
auto offset = args.params().begin();
// For each group calculate the offset that is used to extract the columns
for (size_t g = 0; g < args.groups().size(); ++g) {
// Calculate the upper bound for the current layout
auto end = offset;
auto tmp = args.groups()[g];
while (tmp-- != 0)
++end;
base.push_back(createTable(offset, end, compressed));
offset = end;
}
return std::move(std::make_shared<MutableVerticalTable>(base));
}
