exception.hpp

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#pragma once
 
/// @file userver/formats/json/exception.hpp
/// @brief Exception classes for JSON module
/// @ingroup userver_universal
 
#include <iosfwd>
#include <stdexcept>
#include <string>
#include <string_view>
 
USERVER_NAMESPACE_BEGIN
 
namespace formats::json {
 
class Exception : public std::exception {
 public:
  explicit Exception(std::string msg) : msg_(std::move(msg)) {}
 
  const char* what() const noexcept final { return msg_.c_str(); }
 
 private:
  std::string msg_;
};
 
class ParseException : public Exception {
 public:
  using Exception::Exception;
};
 
class BadStreamException : public Exception {
 public:
  explicit BadStreamException(const std::istream& is);
  explicit BadStreamException(const std::ostream& os);
};
 
class TypeMismatchException : public Exception {
 public:
  TypeMismatchException(int actual, int expected, const std::string& path);
  std::string_view GetActual() const;
  std::string_view GetExpected() const;
  const std::string& GetPath() const noexcept;
 
 private:
  int actual_;
  int expected_;
  std::string path_;
};
 
class OutOfBoundsException : public Exception {
 public:
  OutOfBoundsException(size_t index, size_t size, const std::string& path);
  const std::string& GetPath() const noexcept;
 
 private:
  std::string path_;
};
 
class MemberMissingException : public Exception {
 public:
  explicit MemberMissingException(const std::string& path);
};
 
/// Conversion error
class ConversionException : public Exception {
 public:
  using Exception::Exception;
};
 
class UnknownDiscriminatorException : public Exception {
 public:
  UnknownDiscriminatorException(const std::string& path,
                                std::string_view discriminator_field);
};
 
}  // namespace formats::json
 
USERVER_NAMESPACE_END