condition.hpp

#pragma once
 
#include <iron_query/expr.hpp>
#include <iron_query/operator_precedence.hpp>
#include <memory>
#include <string>
 
namespace iron_query {
 
namespace impl {
struct Node;
} // namespace impl
 
class [[nodiscard]] Condition final {
public:
  Condition operator&&(const Condition &other) const;
 
  Condition operator||(const Condition &other) const;
 
  Condition operator!() const;
 
  static Condition FromRaw(std::string s);
 
  std::string Extract(OperatorPrecedence precedence) const;
 
  std::string ToString() const;
 
  operator Expr() &&;
 
private:
  friend class Expr;
  friend Condition operator<(const Expr &a, const Expr &b);
  friend Condition operator<=(const Expr &a, const Expr &b);
  friend Condition operator>(const Expr &a, const Expr &b);
  friend Condition operator>=(const Expr &a, const Expr &b);
  friend Condition operator==(const Expr &a, const Expr &b);
  friend Condition operator!=(const Expr &a, const Expr &b);
 
  Condition(std::string s, OperatorPrecedence precedence);
  explicit Condition(std::shared_ptr<const impl::Node> node);
 
  std::shared_ptr<const impl::Node> node_;
};
 
} // namespace iron_query