case_builder.hpp

#pragma once
 
#include <iron_query/condition.hpp>
#include <iron_query/expr.hpp>
#include <string>
 
namespace iron_query {
 
class [[nodiscard]] CaseBuilder final {
public:
  CaseBuilder() = default;
 
  CaseBuilder When(Condition cond) &&;
 
  CaseBuilder Then(Expr result) &&;
 
  CaseBuilder Else(Expr result) &&;
 
  Expr End() const;
 
private:
  std::string whens_;
  std::string pending_when_;
  std::string else_;
  bool has_pending_when_{false};
};
 
CaseBuilder Case();
 
} // namespace iron_query