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#pragma once
#include <yql/essentials/utils/yql_panic.h>
#include <expected>
#include <variant>
namespace NSQLTranslationV1 {
class TContext;
template <class TPtr>
class TNullable final: public TPtr {
public:
// Every pointer is nullable
// NOLINTNEXTLINE(google-explicit-constructor)
TNullable(TPtr ptr)
: TPtr(std::move(ptr))
{
}
};
template <class TPtr>
class TNonNull final: public TPtr {
public:
explicit TNonNull(TPtr ptr)
: TPtr(std::move(ptr))
{
YQL_ENSURE(*static_cast<TPtr*>(this));
}
operator bool() = delete;
};
enum class ESQLError {
Basic,
UnsupportedYqlSelect,
};
std::unexpected<ESQLError> UnsupportedYqlSelect(TContext& ctx, TStringBuf message);
template <class T>
using TSQLResult = std::expected<T, ESQLError>;
using TSQLStatus = TSQLResult<std::monostate>;
template <class T>
bool IsUnwrappable(const TSQLResult<T>& result) {
return result || result.error() == ESQLError::Basic;
}
template <class T>
void EnsureUnwrappable(const TSQLResult<T>& result) {
YQL_ENSURE(
IsUnwrappable(result),
"Expected "
<< "at most " << ESQLError::Basic << " error, "
<< "but got " << result.error());
}
bool Unwrap(TSQLStatus status);
} // namespace NSQLTranslationV1
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