rdkit/Code/RDGeneral/Exceptions.h

//
// Copyright (c) 2003-2005 greg Landrum and Rational Discovery LLC
//
//   @@ All Rights Reserved @@
//  This file is part of the RDKit.
//  The contents are covered by the terms of the BSD license
//  which is included in the file license.txt, found at the root
//  of the RDKit source tree.
//
#include <RDGeneral/export.h>
#ifndef _RD_EXCEPTIONS_H
#define _RD_EXCEPTIONS_H
#include <stdexcept>
#include <string>
#include <string_view>
#include <utility>

//! \brief Class to allow us to throw an \c IndexError from C++ and have
//!         it make it back to Python
//!
class RDKIT_RDGENERAL_EXPORT IndexErrorException : public std::runtime_error {
 public:
  IndexErrorException(int i)
      : std::runtime_error("IndexErrorException"),
        _idx(i),
        _msg("Index Error: " + std::to_string(_idx)) {}
  int index() const { return _idx; }

  const char *what() const noexcept override { return _msg.c_str(); }

  ~IndexErrorException() noexcept override = default;

 private:
  int _idx;
  std::string _msg;
};

//! \brief Class to allow us to throw a \c ValueError from C++ and have
//!         it make it back to Python
//!
class RDKIT_RDGENERAL_EXPORT ValueErrorException : public std::runtime_error {
 public:
  ValueErrorException(std::string i)
      : std::runtime_error("ValueErrorException"), _value(std::move(i)) {}
  ValueErrorException(const char *msg)
      : std::runtime_error("ValueErrorException"), _value(msg) {}
  const char *what() const noexcept override { return _value.c_str(); }
  ~ValueErrorException() noexcept override = default;

 private:
  std::string _value;
};

//! \brief Class to allow us to throw a \c KeyError from C++ and have
//!         it make it back to Python
//!
class RDKIT_RDGENERAL_EXPORT KeyErrorException : public std::runtime_error {
 public:
  KeyErrorException(std::string key)
      : std::runtime_error("KeyErrorException"),
        _key(key),
        _msg("Key Error: " + key) {}
  KeyErrorException(std::string_view key)
      : std::runtime_error("KeyErrorException"),
        _key(key),
        _msg("Key Error: " + _key) {}
  std::string key() const { return _key; }

  const char *what() const noexcept override { return _msg.c_str(); }

  ~KeyErrorException() noexcept override = default;

 private:
  std::string _key;
  std::string _msg;
};

#endif