pebahstq5/biscuit/cxx/stdexcept

// -*- c++ -*-
// C++11 19.2
#pragma once

#include <exception>
#include <string>

namespace std
{
  class __base_error : public exception
  {
    const char *msg_;
    string str_;
  public:
    explicit __base_error(const char *what_arg)
      : msg_(what_arg) { }
    explicit __base_error(const string &what_arg)
      : msg_(nullptr), str_(what_arg) { }
    ~__base_error() noexcept { }
    virtual const char *what() const noexcept
    {
      if (msg_)
        return msg_;
      return str_.c_str();
    }
  };

  class logic_error : public __base_error
  {
  public:
    explicit logic_error(const char* what_arg) : __base_error(what_arg) { }
    explicit logic_error(const string& what_arg) : __base_error(what_arg) { }
  };

  class domain_error : public logic_error
  {
  public:
    explicit domain_error(const char* what_arg) : logic_error(what_arg) { }
    explicit domain_error(const string& what_arg) : logic_error(what_arg) { }
  };

  class invalid_argument : public logic_error
  {
  public:
    explicit invalid_argument(const char* what_arg) : logic_error(what_arg) { }
    explicit invalid_argument(const string& what_arg) : logic_error(what_arg) { }
  };

  class length_error : public logic_error
  {
  public:
    explicit length_error(const char* what_arg) : logic_error(what_arg) { }
    explicit length_error(const string& what_arg) : logic_error(what_arg) { }
  };

  class out_of_range : public logic_error
  {
  public:
    explicit out_of_range(const char* what_arg) : logic_error(what_arg) { }
    explicit out_of_range(const string& what_arg) : logic_error(what_arg) { }
  };

  class runtime_error : public __base_error
  {
  public:
    explicit runtime_error(const char* what_arg) : __base_error(what_arg) { }
    explicit runtime_error(const string& what_arg) : __base_error(what_arg) { }
  };

  class range_error : public runtime_error
  {
  public:
    explicit range_error(const char* what_arg) : runtime_error(what_arg) { }
    explicit range_error(const string& what_arg) : runtime_error(what_arg) { }
  };

  class overflow_error : public runtime_error
  {
  public:
    explicit overflow_error(const char* what_arg) : runtime_error(what_arg) { }
    explicit overflow_error(const string& what_arg) : runtime_error(what_arg) { }
  };

  class underflow_error : public runtime_error
  {
  public:
    explicit underflow_error(const char* what_arg) : runtime_error(what_arg) { }
    explicit underflow_error(const string& what_arg) : runtime_error(what_arg) { }
  };
}