is_convertible.hpp

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// ArduinoJson - https://arduinojson.org
// Copyright © 2014-2023, Benoit BLANCHON
// MIT License
 
#pragma once
 
#include "declval.hpp"
 
#ifdef _MSC_VER
#pragma warning(push)
// conversion from 'T' to 'To', possible loss of data
#pragma warning(disable : 4244)
#endif
 
// clang-format off
#ifdef __ICCARM__
// Suppress IAR Compiler Warning[Pa093]: implicit conversion from floating point to integer
#pragma diag_suppress=Pa093
#endif
// clang-format on
template< typename From, typename To >
struct is_convertible
{
protected:  // <- to avoid GCC's "all member functions in class are private"
  static int probe(To);
  static char probe(...);
 
  static From& from_;
 
 public:
  static const bool value = sizeof(probe(from_)) == sizeof(int);
};
#ifdef _MSC_VER
#pragma warning(pop)
#endif
 
// clang-format off
#ifdef __ICCARM__
#pragma diag_default=Pa093
#endif
// clang-format on